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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 

Pull user namespace and namespace infrastructure changes from Eric W Biederman:
 "This set of changes starts with a few small enhnacements to the user
  namespace.  reboot support, allowing more arbitrary mappings, and
  support for mounting devpts, ramfs, tmpfs, and mqueuefs as just the
  user namespace root.

  I do my best to document that if you care about limiting your
  unprivileged users that when you have the user namespace support
  enabled you will need to enable memory control groups.

  There is a minor bug fix to prevent overflowing the stack if someone
  creates way too many user namespaces.

  The bulk of the changes are a continuation of the kuid/kgid push down
  work through the filesystems.  These changes make using uids and gids
  typesafe which ensures that these filesystems are safe to use when
  multiple user namespaces are in use.  The filesystems converted for
  3.9 are ceph, 9p, afs, ocfs2, gfs2, ncpfs, nfs, nfsd, and cifs.  The
  changes for these filesystems were a little more involved so I split
  the changes into smaller hopefully obviously correct changes.

  XFS is the only filesystem that remains.  I was hoping I could get
  that in this release so that user namespace support would be enabled
  with an allyesconfig or an allmodconfig but it looks like the xfs
  changes need another couple of days before it they are ready."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (93 commits)
  cifs: Enable building with user namespaces enabled.
  cifs: Convert struct cifs_ses to use a kuid_t and a kgid_t
  cifs: Convert struct cifs_sb_info to use kuids and kgids
  cifs: Modify struct smb_vol to use kuids and kgids
  cifs: Convert struct cifsFileInfo to use a kuid
  cifs: Convert struct cifs_fattr to use kuid and kgids
  cifs: Convert struct tcon_link to use a kuid.
  cifs: Modify struct cifs_unix_set_info_args to hold a kuid_t and a kgid_t
  cifs: Convert from a kuid before printing current_fsuid
  cifs: Use kuids and kgids SID to uid/gid mapping
  cifs: Pass GLOBAL_ROOT_UID and GLOBAL_ROOT_GID to keyring_alloc
  cifs: Use BUILD_BUG_ON to validate uids and gids are the same size
  cifs: Override unmappable incoming uids and gids
  nfsd: Enable building with user namespaces enabled.
  nfsd: Properly compare and initialize kuids and kgids
  nfsd: Store ex_anon_uid and ex_anon_gid as kuids and kgids
  nfsd: Modify nfsd4_cb_sec to use kuids and kgids
  nfsd: Handle kuids and kgids in the nfs4acl to posix_acl conversion
  nfsd: Convert nfsxdr to use kuids and kgids
  nfsd: Convert nfs3xdr to use kuids and kgids
  ...
This commit is contained in:
Linus Torvalds 2013-02-25 16:00:49 -08:00
parent 8d168f7155 139321c65c
commit 94f2f14234
101 changed files with 1058 additions and 656 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
Documentation/namespaces/resource-control.txt Normal file
View File

@ -0,0 +1,14 @@
There are a lot of kinds of objects in the kernel that don't have
individual limits or that have limits that are ineffective when a set
of processes is allowed to switch user ids. With user namespaces
enabled in a kernel for people who don't trust their users or their
users programs to play nice this problems becomes more acute.
Therefore it is recommended that memory control groups be enabled in
kernels that enable user namespaces, and it is further recommended
that userspace configure memory control groups to limit how much
memory user's they don't trust to play nice can use.
Memory control groups can be configured by installing the libcgroup
package present on most distros editing /etc/cgrules.conf,
/etc/cgconfig.conf and setting up libpam-cgroup.

17
fs/9p/fid.c
View File

@ -74,19 +74,20 @@ int v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid)
*
*/
static struct p9_fid *v9fs_fid_find(struct dentry *dentry, u32 uid, int any)
static struct p9_fid *v9fs_fid_find(struct dentry *dentry, kuid_t uid, int any)
{
struct v9fs_dentry *dent;
struct p9_fid *fid, *ret;
p9_debug(P9_DEBUG_VFS, " dentry: %s (%p) uid %d any %d\n",
dentry->d_name.name, dentry, uid, any);
dentry->d_name.name, dentry, from_kuid(&init_user_ns, uid),
any);
dent = (struct v9fs_dentry *) dentry->d_fsdata;
ret = NULL;
if (dent) {
spin_lock(&dent->lock);
list_for_each_entry(fid, &dent->fidlist, dlist) {
if (any || fid->uid == uid) {
if (any || uid_eq(fid->uid, uid)) {
ret = fid;
break;
}
@ -126,7 +127,7 @@ static int build_path_from_dentry(struct v9fs_session_info *v9ses,
}
static struct p9_fid *v9fs_fid_lookup_with_uid(struct dentry *dentry,
uid_t uid, int any)
kuid_t uid, int any)
{
struct dentry *ds;
char **wnames, *uname;
@ -233,7 +234,7 @@ static struct p9_fid *v9fs_fid_lookup_with_uid(struct dentry *dentry,
struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
{
uid_t uid;
kuid_t uid;
int any, access;
struct v9fs_session_info *v9ses;
@ -253,7 +254,7 @@ struct p9_fid *v9fs_fid_lookup(struct dentry *dentry)
break;
default:
uid = ~0;
uid = INVALID_UID;
any = 0;
break;
}
@ -272,7 +273,7 @@ struct p9_fid *v9fs_fid_clone(struct dentry *dentry)
return ret;
}
static struct p9_fid *v9fs_fid_clone_with_uid(struct dentry *dentry, uid_t uid)
static struct p9_fid *v9fs_fid_clone_with_uid(struct dentry *dentry, kuid_t uid)
{
struct p9_fid *fid, *ret;
@ -289,7 +290,7 @@ struct p9_fid *v9fs_writeback_fid(struct dentry *dentry)
int err;
struct p9_fid *fid;
fid = v9fs_fid_clone_with_uid(dentry, 0);
fid = v9fs_fid_clone_with_uid(dentry, GLOBAL_ROOT_UID);
if (IS_ERR(fid))
goto error_out;
/*

34
fs/9p/v9fs.c
View File

@ -161,7 +161,13 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
ret = r;
continue;
}
v9ses->dfltuid = option;
v9ses->dfltuid = make_kuid(current_user_ns(), option);
if (!uid_valid(v9ses->dfltuid)) {
p9_debug(P9_DEBUG_ERROR,
"uid field, but not a uid?\n");
ret = -EINVAL;
continue;
}
break;
case Opt_dfltgid:
r = match_int(&args[0], &option);
@ -171,7 +177,13 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
ret = r;
continue;
}
v9ses->dfltgid = option;
v9ses->dfltgid = make_kgid(current_user_ns(), option);
if (!gid_valid(v9ses->dfltgid)) {
p9_debug(P9_DEBUG_ERROR,
"gid field, but not a gid?\n");
ret = -EINVAL;
continue;
}
break;
case Opt_afid:
r = match_int(&args[0], &option);
@ -248,8 +260,9 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
else if (strcmp(s, "client") == 0) {
v9ses->flags |= V9FS_ACCESS_CLIENT;
} else {
uid_t uid;
v9ses->flags |= V9FS_ACCESS_SINGLE;
v9ses->uid = simple_strtoul(s, &e, 10);
uid = simple_strtoul(s, &e, 10);
if (*e != '\0') {
ret = -EINVAL;
pr_info("Unknown access argument %s\n",
@ -257,6 +270,13 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
kfree(s);
goto free_and_return;
}
v9ses->uid = make_kuid(current_user_ns(), uid);
if (!uid_valid(v9ses->uid)) {
ret = -EINVAL;
pr_info("Uknown uid %s\n", s);
kfree(s);
goto free_and_return;
}
}
kfree(s);
@ -319,7 +339,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
list_add(&v9ses->slist, &v9fs_sessionlist);
spin_unlock(&v9fs_sessionlist_lock);
v9ses->uid = ~0;
v9ses->uid = INVALID_UID;
v9ses->dfltuid = V9FS_DEFUID;
v9ses->dfltgid = V9FS_DEFGID;
@ -364,7 +384,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
v9ses->flags &= ~V9FS_ACCESS_MASK;
v9ses->flags |= V9FS_ACCESS_ANY;
v9ses->uid = ~0;
v9ses->uid = INVALID_UID;
}
if (!v9fs_proto_dotl(v9ses) ||
!((v9ses->flags & V9FS_ACCESS_MASK) == V9FS_ACCESS_CLIENT)) {
@ -375,7 +395,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
v9ses->flags &= ~V9FS_ACL_MASK;
}
fid = p9_client_attach(v9ses->clnt, NULL, v9ses->uname, ~0,
fid = p9_client_attach(v9ses->clnt, NULL, v9ses->uname, INVALID_UID,
v9ses->aname);
if (IS_ERR(fid)) {
retval = PTR_ERR(fid);
@ -387,7 +407,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses,
if ((v9ses->flags & V9FS_ACCESS_MASK) == V9FS_ACCESS_SINGLE)
fid->uid = v9ses->uid;
else
fid->uid = ~0;
fid->uid = INVALID_UID;
#ifdef CONFIG_9P_FSCACHE
/* register the session for caching */

10
fs/9p/v9fs.h
View File

@ -109,9 +109,9 @@ struct v9fs_session_info {
char *uname; /* user name to mount as */
char *aname; /* name of remote hierarchy being mounted */
unsigned int maxdata; /* max data for client interface */
unsigned int dfltuid; /* default uid/muid for legacy support */
unsigned int dfltgid; /* default gid for legacy support */
u32 uid; /* if ACCESS_SINGLE, the uid that has access */
kuid_t dfltuid; /* default uid/muid for legacy support */
kgid_t dfltgid; /* default gid for legacy support */
kuid_t uid; /* if ACCESS_SINGLE, the uid that has access */
struct p9_client *clnt; /* 9p client */
struct list_head slist; /* list of sessions registered with v9fs */
struct backing_dev_info bdi;
@ -165,8 +165,8 @@ extern struct inode *v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses,
#define V9FS_PORT 564
#define V9FS_DEFUSER "nobody"
#define V9FS_DEFANAME ""
#define V9FS_DEFUID (-2)
#define V9FS_DEFGID (-2)
#define V9FS_DEFUID KUIDT_INIT(-2)
#define V9FS_DEFGID KGIDT_INIT(-2)
static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode)
{

6
fs/9p/vfs_inode.c
View File

@ -225,9 +225,9 @@ v9fs_blank_wstat(struct p9_wstat *wstat)
wstat->uid = NULL;
wstat->gid = NULL;
wstat->muid = NULL;
wstat->n_uid = ~0;
wstat->n_gid = ~0;
wstat->n_muid = ~0;
wstat->n_uid = INVALID_UID;
wstat->n_gid = INVALID_GID;
wstat->n_muid = INVALID_UID;
wstat->extension = NULL;
}

10
fs/9p/vfs_inode_dotl.c
View File

@ -57,7 +57,7 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
* group of the new file system object.
*/
static gid_t v9fs_get_fsgid_for_create(struct inode *dir_inode)
static kgid_t v9fs_get_fsgid_for_create(struct inode *dir_inode)
{
BUG_ON(dir_inode == NULL);
@ -245,7 +245,7 @@ v9fs_vfs_atomic_open_dotl(struct inode *dir, struct dentry *dentry,
int *opened)
{
int err = 0;
gid_t gid;
kgid_t gid;
umode_t mode;
char *name = NULL;
struct p9_qid qid;
@ -396,7 +396,7 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir,
int err;
struct v9fs_session_info *v9ses;
struct p9_fid *fid = NULL, *dfid = NULL;
gid_t gid;
kgid_t gid;
char *name;
umode_t mode;
struct inode *inode;
@ -697,7 +697,7 @@ v9fs_vfs_symlink_dotl(struct inode *dir, struct dentry *dentry,
const char *symname)
{
int err;
gid_t gid;
kgid_t gid;
char *name;
struct p9_qid qid;
struct inode *inode;
@ -837,7 +837,7 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, umode_t omode,
dev_t rdev)
{
int err;
gid_t gid;
kgid_t gid;
char *name;
umode_t mode;
struct v9fs_session_info *v9ses;

11
fs/afs/afs.h
View File

@ -119,8 +119,8 @@ struct afs_file_status {
u64 size; /* file size */
afs_dataversion_t data_version; /* current data version */
u32 author; /* author ID */
u32 owner; /* owner ID */
u32 group; /* group ID */
kuid_t owner; /* owner ID */
kgid_t group; /* group ID */
afs_access_t caller_access; /* access rights for authenticated caller */
afs_access_t anon_access; /* access rights for unauthenticated caller */
umode_t mode; /* UNIX mode */
@ -133,13 +133,6 @@ struct afs_file_status {
/*
* AFS file status change request
*/
struct afs_store_status {
u32 mask; /* which bits of the struct are set */
u32 mtime_client; /* last time client changed data */
u32 owner; /* owner ID */
u32 group; /* group ID */
umode_t mode; /* UNIX mode */
};
#define AFS_SET_MTIME 0x01 /* set the mtime */
#define AFS_SET_OWNER 0x02 /* set the owner ID */

14
fs/afs/fsclient.c
View File

@ -42,6 +42,8 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
umode_t mode;
u64 data_version, size;
u32 changed = 0; /* becomes non-zero if ctime-type changes seen */
kuid_t owner;
kgid_t group;
#define EXTRACT(DST) \
do { \
@ -56,7 +58,9 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
size = ntohl(*bp++);
data_version = ntohl(*bp++);
EXTRACT(status->author);
EXTRACT(status->owner);
owner = make_kuid(&init_user_ns, ntohl(*bp++));
changed |= !uid_eq(owner, status->owner);
status->owner = owner;
EXTRACT(status->caller_access); /* call ticket dependent */
EXTRACT(status->anon_access);
EXTRACT(status->mode);
@ -65,7 +69,9 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
bp++; /* seg size */
status->mtime_client = ntohl(*bp++);
status->mtime_server = ntohl(*bp++);
EXTRACT(status->group);
group = make_kgid(&init_user_ns, ntohl(*bp++));
changed |= !gid_eq(group, status->group);
status->group = group;
bp++; /* sync counter */
data_version |= (u64) ntohl(*bp++) << 32;
EXTRACT(status->lock_count);
@ -181,12 +187,12 @@ static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
if (attr->ia_valid & ATTR_UID) {
mask |= AFS_SET_OWNER;
owner = attr->ia_uid;
owner = from_kuid(&init_user_ns, attr->ia_uid);
}
if (attr->ia_valid & ATTR_GID) {
mask |= AFS_SET_GROUP;
group = attr->ia_gid;
group = from_kgid(&init_user_ns, attr->ia_gid);
}
if (attr->ia_valid & ATTR_MODE) {

6
fs/afs/inode.c
View File

@ -69,7 +69,7 @@ static int afs_inode_map_status(struct afs_vnode *vnode, struct key *key)
set_nlink(inode, vnode->status.nlink);
inode->i_uid = vnode->status.owner;
inode->i_gid = 0;
inode->i_gid = GLOBAL_ROOT_GID;
inode->i_size = vnode->status.size;
inode->i_ctime.tv_sec = vnode->status.mtime_server;
inode->i_ctime.tv_nsec = 0;
@ -175,8 +175,8 @@ struct inode *afs_iget_autocell(struct inode *dir, const char *dev_name,
inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
inode->i_op = &afs_autocell_inode_operations;
set_nlink(inode, 2);
inode->i_uid = 0;
inode->i_gid = 0;
inode->i_uid = GLOBAL_ROOT_UID;
inode->i_gid = GLOBAL_ROOT_GID;
inode->i_ctime.tv_sec = get_seconds();
inode->i_ctime.tv_nsec = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime;

6
fs/afs/super.c
View File

@ -24,6 +24,8 @@
#include <linux/parser.h>
#include <linux/statfs.h>
#include <linux/sched.h>
#include <linux/nsproxy.h>
#include <net/net_namespace.h>
#include "internal.h"
#define AFS_FS_MAGIC 0x6B414653 /* 'kAFS' */
@ -363,6 +365,10 @@ static struct dentry *afs_mount(struct file_system_type *fs_type,
memset(&params, 0, sizeof(params));
ret = -EINVAL;
if (current->nsproxy->net_ns != &init_net)
goto error;
/* parse the options and device name */
if (options) {
ret = afs_parse_options(&params, options, &dev_name);

17
fs/ceph/caps.c
View File

@ -930,7 +930,7 @@ static int send_cap_msg(struct ceph_mds_session *session,
u64 size, u64 max_size,
struct timespec *mtime, struct timespec *atime,
u64 time_warp_seq,
uid_t uid, gid_t gid, umode_t mode,
kuid_t uid, kgid_t gid, umode_t mode,
u64 xattr_version,
struct ceph_buffer *xattrs_buf,
u64 follows)
@ -974,8 +974,8 @@ static int send_cap_msg(struct ceph_mds_session *session,
ceph_encode_timespec(&fc->atime, atime);
fc->time_warp_seq = cpu_to_le32(time_warp_seq);
fc->uid = cpu_to_le32(uid);
fc->gid = cpu_to_le32(gid);
fc->uid = cpu_to_le32(from_kuid(&init_user_ns, uid));
fc->gid = cpu_to_le32(from_kgid(&init_user_ns, gid));
fc->mode = cpu_to_le32(mode);
fc->xattr_version = cpu_to_le64(xattr_version);
@ -1081,8 +1081,8 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
struct timespec mtime, atime;
int wake = 0;
umode_t mode;
uid_t uid;
gid_t gid;
kuid_t uid;
kgid_t gid;
struct ceph_mds_session *session;
u64 xattr_version = 0;
struct ceph_buffer *xattr_blob = NULL;
@ -2359,10 +2359,11 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
if ((issued & CEPH_CAP_AUTH_EXCL) == 0) {
inode->i_mode = le32_to_cpu(grant->mode);
inode->i_uid = le32_to_cpu(grant->uid);
inode->i_gid = le32_to_cpu(grant->gid);
inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(grant->uid));
inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(grant->gid));
dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode,
inode->i_uid, inode->i_gid);
from_kuid(&init_user_ns, inode->i_uid),
from_kgid(&init_user_ns, inode->i_gid));
}
if ((issued & CEPH_CAP_LINK_EXCL) == 0)

23
fs/ceph/inode.c
View File

@ -612,10 +612,11 @@ static int fill_inode(struct inode *inode,
if ((issued & CEPH_CAP_AUTH_EXCL) == 0) {
inode->i_mode = le32_to_cpu(info->mode);
inode->i_uid = le32_to_cpu(info->uid);
inode->i_gid = le32_to_cpu(info->gid);
inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid));
inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid));
dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode,
inode->i_uid, inode->i_gid);
from_kuid(&init_user_ns, inode->i_uid),
from_kgid(&init_user_ns, inode->i_gid));
}
if ((issued & CEPH_CAP_LINK_EXCL) == 0)
@ -1565,26 +1566,30 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
if (ia_valid & ATTR_UID) {
dout("setattr %p uid %d -> %d\n", inode,
inode->i_uid, attr->ia_uid);
from_kuid(&init_user_ns, inode->i_uid),
from_kuid(&init_user_ns, attr->ia_uid));
if (issued & CEPH_CAP_AUTH_EXCL) {
inode->i_uid = attr->ia_uid;
dirtied |= CEPH_CAP_AUTH_EXCL;
} else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 ||
attr->ia_uid != inode->i_uid) {
req->r_args.setattr.uid = cpu_to_le32(attr->ia_uid);
!uid_eq(attr->ia_uid, inode->i_uid)) {
req->r_args.setattr.uid = cpu_to_le32(
from_kuid(&init_user_ns, attr->ia_uid));
mask |= CEPH_SETATTR_UID;
release |= CEPH_CAP_AUTH_SHARED;
}
}
if (ia_valid & ATTR_GID) {
dout("setattr %p gid %d -> %d\n", inode,
inode->i_gid, attr->ia_gid);
from_kgid(&init_user_ns, inode->i_gid),
from_kgid(&init_user_ns, attr->ia_gid));
if (issued & CEPH_CAP_AUTH_EXCL) {
inode->i_gid = attr->ia_gid;
dirtied |= CEPH_CAP_AUTH_EXCL;
} else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 ||
attr->ia_gid != inode->i_gid) {
req->r_args.setattr.gid = cpu_to_le32(attr->ia_gid);
!gid_eq(attr->ia_gid, inode->i_gid)) {
req->r_args.setattr.gid = cpu_to_le32(
from_kgid(&init_user_ns, attr->ia_gid));
mask |= CEPH_SETATTR_GID;
release |= CEPH_CAP_AUTH_SHARED;
}

4
fs/ceph/mds_client.c
View File

@ -1658,8 +1658,8 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
head->mdsmap_epoch = cpu_to_le32(mdsc->mdsmap->m_epoch);
head->op = cpu_to_le32(req->r_op);
head->caller_uid = cpu_to_le32(req->r_uid);
head->caller_gid = cpu_to_le32(req->r_gid);
head->caller_uid = cpu_to_le32(from_kuid(&init_user_ns, req->r_uid));
head->caller_gid = cpu_to_le32(from_kgid(&init_user_ns, req->r_gid));
head->args = req->r_args;
ceph_encode_filepath(&p, end, ino1, path1);

4
fs/ceph/mds_client.h
View File

@ -184,8 +184,8 @@ struct ceph_mds_request {
union ceph_mds_request_args r_args;
int r_fmode; /* file mode, if expecting cap */
uid_t r_uid;
gid_t r_gid;
kuid_t r_uid;
kgid_t r_gid;
/* for choosing which mds to send this request to */
int r_direct_mode;

4
fs/ceph/super.h
View File

@ -138,8 +138,8 @@ struct ceph_cap_snap {
struct ceph_snap_context *context;
umode_t mode;
uid_t uid;
gid_t gid;
kuid_t uid;
kgid_t gid;
struct ceph_buffer *xattr_blob;
u64 xattr_version;

8
fs/cifs/cifs_fs_sb.h
View File

@ -55,10 +55,10 @@ struct cifs_sb_info {
unsigned int wsize;
unsigned long actimeo; /* attribute cache timeout (jiffies) */
atomic_t active;
uid_t mnt_uid;
gid_t mnt_gid;
uid_t mnt_backupuid;
gid_t mnt_backupgid;
kuid_t mnt_uid;
kgid_t mnt_gid;
kuid_t mnt_backupuid;
kgid_t mnt_backupgid;
umode_t mnt_file_mode;
umode_t mnt_dir_mode;
unsigned int mnt_cifs_flags;

6
fs/cifs/cifs_spnego.c
View File

@ -149,10 +149,12 @@ cifs_get_spnego_key(struct cifs_ses *sesInfo)
goto out;
dp = description + strlen(description);
sprintf(dp, ";uid=0x%x", sesInfo->linux_uid);
sprintf(dp, ";uid=0x%x",
from_kuid_munged(&init_user_ns, sesInfo->linux_uid));
dp = description + strlen(description);
sprintf(dp, ";creduid=0x%x", sesInfo->cred_uid);
sprintf(dp, ";creduid=0x%x",
from_kuid_munged(&init_user_ns, sesInfo->cred_uid));
if (sesInfo->user_name) {
dp = description + strlen(description);

47
fs/cifs/cifsacl.c
View File

@ -266,8 +266,8 @@ sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
struct key *sidkey;
char *sidstr;
const struct cred *saved_cred;
uid_t fuid = cifs_sb->mnt_uid;
gid_t fgid = cifs_sb->mnt_gid;
kuid_t fuid = cifs_sb->mnt_uid;
kgid_t fgid = cifs_sb->mnt_gid;
/*
* If we have too many subauthorities, then something is really wrong.
@ -297,6 +297,7 @@ sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
* probably a safe assumption but might be better to check based on
* sidtype.
*/
BUILD_BUG_ON(sizeof(uid_t) != sizeof(gid_t));
if (sidkey->datalen != sizeof(uid_t)) {
rc = -EIO;
cFYI(1, "%s: Downcall contained malformed key "
@ -305,10 +306,21 @@ sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
goto out_key_put;
}
if (sidtype == SIDOWNER)
memcpy(&fuid, &sidkey->payload.value, sizeof(uid_t));
else
memcpy(&fgid, &sidkey->payload.value, sizeof(gid_t));
if (sidtype == SIDOWNER) {
kuid_t uid;
uid_t id;
memcpy(&id, &sidkey->payload.value, sizeof(uid_t));
uid = make_kuid(&init_user_ns, id);
if (uid_valid(uid))
fuid = uid;
} else {
kgid_t gid;
gid_t id;
memcpy(&id, &sidkey->payload.value, sizeof(gid_t));
gid = make_kgid(&init_user_ns, id);
if (gid_valid(gid))
fgid = gid;
}
out_key_put:
key_put(sidkey);
@ -346,7 +358,8 @@ init_cifs_idmap(void)
if (!cred)
return -ENOMEM;
keyring = keyring_alloc(".cifs_idmap", 0, 0, cred,
keyring = keyring_alloc(".cifs_idmap",
GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred,
(KEY_POS_ALL & ~KEY_POS_SETATTR) |
KEY_USR_VIEW | KEY_USR_READ,
KEY_ALLOC_NOT_IN_QUOTA, NULL);
@ -774,7 +787,7 @@ static int parse_sec_desc(struct cifs_sb_info *cifs_sb,
/* Convert permission bits from mode to equivalent CIFS ACL */
static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
__u32 secdesclen, __u64 nmode, uid_t uid, gid_t gid, int *aclflag)
__u32 secdesclen, __u64 nmode, kuid_t uid, kgid_t gid, int *aclflag)
{
int rc = 0;
__u32 dacloffset;
@ -806,17 +819,19 @@ static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
*aclflag = CIFS_ACL_DACL;
} else {
memcpy(pnntsd, pntsd, secdesclen);
if (uid != NO_CHANGE_32) { /* chown */
if (uid_valid(uid)) { /* chown */
uid_t id;
owner_sid_ptr = (struct cifs_sid *)((char *)pnntsd +
le32_to_cpu(pnntsd->osidoffset));
nowner_sid_ptr = kmalloc(sizeof(struct cifs_sid),
GFP_KERNEL);
if (!nowner_sid_ptr)
return -ENOMEM;
rc = id_to_sid(uid, SIDOWNER, nowner_sid_ptr);
id = from_kuid(&init_user_ns, uid);
rc = id_to_sid(id, SIDOWNER, nowner_sid_ptr);
if (rc) {
cFYI(1, "%s: Mapping error %d for owner id %d",
__func__, rc, uid);
__func__, rc, id);
kfree(nowner_sid_ptr);
return rc;
}
@ -824,17 +839,19 @@ static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
kfree(nowner_sid_ptr);
*aclflag = CIFS_ACL_OWNER;
}
if (gid != NO_CHANGE_32) { /* chgrp */
if (gid_valid(gid)) { /* chgrp */
gid_t id;
group_sid_ptr = (struct cifs_sid *)((char *)pnntsd +
le32_to_cpu(pnntsd->gsidoffset));
ngroup_sid_ptr = kmalloc(sizeof(struct cifs_sid),
GFP_KERNEL);
if (!ngroup_sid_ptr)
return -ENOMEM;
rc = id_to_sid(gid, SIDGROUP, ngroup_sid_ptr);
id = from_kgid(&init_user_ns, gid);
rc = id_to_sid(id, SIDGROUP, ngroup_sid_ptr);
if (rc) {
cFYI(1, "%s: Mapping error %d for group id %d",
__func__, rc, gid);
__func__, rc, id);
kfree(ngroup_sid_ptr);
return rc;
}
@ -1002,7 +1019,7 @@ cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, struct cifs_fattr *fattr,
/* Convert mode bits to an ACL so we can update the ACL on the server */
int
id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 nmode,
uid_t uid, gid_t gid)
kuid_t uid, kgid_t gid)
{
int rc = 0;
int aclflag = CIFS_ACL_DACL; /* default flag to set */

14
fs/cifs/cifsfs.c
View File

@ -375,13 +375,15 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
(int)(srcaddr->sa_family));
}
seq_printf(s, ",uid=%u", cifs_sb->mnt_uid);
seq_printf(s, ",uid=%u",
from_kuid_munged(&init_user_ns, cifs_sb->mnt_uid));
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
seq_printf(s, ",forceuid");
else
seq_printf(s, ",noforceuid");
seq_printf(s, ",gid=%u", cifs_sb->mnt_gid);
seq_printf(s, ",gid=%u",
from_kgid_munged(&init_user_ns, cifs_sb->mnt_gid));
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
seq_printf(s, ",forcegid");
else
@ -436,9 +438,13 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM)
seq_printf(s, ",noperm");
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID)
seq_printf(s, ",backupuid=%u", cifs_sb->mnt_backupuid);
seq_printf(s, ",backupuid=%u",
from_kuid_munged(&init_user_ns,
cifs_sb->mnt_backupuid));
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID)
seq_printf(s, ",backupgid=%u", cifs_sb->mnt_backupgid);
seq_printf(s, ",backupgid=%u",
from_kgid_munged(&init_user_ns,
cifs_sb->mnt_backupgid));
seq_printf(s, ",rsize=%u", cifs_sb->rsize);
seq_printf(s, ",wsize=%u", cifs_sb->wsize);

22
fs/cifs/cifsglob.h
View File

@ -400,11 +400,11 @@ struct smb_vol {
char *iocharset; /* local code page for mapping to and from Unicode */
char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
uid_t cred_uid;
uid_t linux_uid;
gid_t linux_gid;
uid_t backupuid;
gid_t backupgid;
kuid_t cred_uid;
kuid_t linux_uid;
kgid_t linux_gid;
kuid_t backupuid;
kgid_t backupgid;
umode_t file_mode;
umode_t dir_mode;
unsigned secFlg;
@ -703,8 +703,8 @@ struct cifs_ses {
char *serverNOS; /* name of network operating system of server */
char *serverDomain; /* security realm of server */
__u64 Suid; /* remote smb uid */
uid_t linux_uid; /* overriding owner of files on the mount */
uid_t cred_uid; /* owner of credentials */
kuid_t linux_uid; /* overriding owner of files on the mount */
kuid_t cred_uid; /* owner of credentials */
unsigned int capabilities;
char serverName[SERVER_NAME_LEN_WITH_NULL * 2]; /* BB make bigger for
TCP names - will ipv6 and sctp addresses fit? */
@ -838,7 +838,7 @@ struct cifs_tcon {
*/
struct tcon_link {
struct rb_node tl_rbnode;
uid_t tl_uid;
kuid_t tl_uid;
unsigned long tl_flags;
#define TCON_LINK_MASTER 0
#define TCON_LINK_PENDING 1
@ -931,7 +931,7 @@ struct cifsFileInfo {
struct list_head tlist; /* pointer to next fid owned by tcon */
struct list_head flist; /* next fid (file instance) for this inode */
struct cifs_fid_locks *llist; /* brlocks held by this fid */
unsigned int uid; /* allows finding which FileInfo structure */
kuid_t uid; /* allows finding which FileInfo structure */
__u32 pid; /* process id who opened file */
struct cifs_fid fid; /* file id from remote */
/* BB add lock scope info here if needed */ ;
@ -1245,8 +1245,8 @@ struct cifs_fattr {
u64 cf_eof;
u64 cf_bytes;
u64 cf_createtime;
uid_t cf_uid;
gid_t cf_gid;
kuid_t cf_uid;
kgid_t cf_gid;
umode_t cf_mode;
dev_t cf_rdev;
unsigned int cf_nlink;

1
fs/cifs/cifspdu.h
View File

@ -277,7 +277,6 @@
#define CIFS_NO_HANDLE 0xFFFF
#define NO_CHANGE_64 0xFFFFFFFFFFFFFFFFULL
#define NO_CHANGE_32 0xFFFFFFFFUL
/* IPC$ in ASCII */
#define CIFS_IPC_RESOURCE "\x49\x50\x43\x24"

9
fs/cifs/cifsproto.h
View File

@ -46,7 +46,8 @@ extern void _free_xid(unsigned int);
({ \
unsigned int __xid = _get_xid(); \
cFYI(1, "CIFS VFS: in %s as Xid: %u with uid: %d", \
__func__, __xid, current_fsuid()); \
__func__, __xid, \
from_kuid(&init_user_ns, current_fsuid())); \
__xid; \
})
@ -161,7 +162,7 @@ extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb,
struct cifs_fattr *fattr, struct inode *inode,
const char *path, const __u16 *pfid);
extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64,
uid_t, gid_t);
kuid_t, kgid_t);
extern struct cifs_ntsd *get_cifs_acl(struct cifs_sb_info *, struct inode *,
const char *, u32 *);
extern int set_cifs_acl(struct cifs_ntsd *, __u32, struct inode *,
@ -304,8 +305,8 @@ struct cifs_unix_set_info_args {
__u64 atime;
__u64 mtime;
__u64 mode;
__u64 uid;
__u64 gid;
kuid_t uid;
kgid_t gid;
dev_t device;
};

10
fs/cifs/cifssmb.c
View File

@ -5819,8 +5819,14 @@ static void
cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset,
const struct cifs_unix_set_info_args *args)
{
u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64;
u64 mode = args->mode;
if (uid_valid(args->uid))
uid = from_kuid(&init_user_ns, args->uid);
if (gid_valid(args->gid))
gid = from_kgid(&init_user_ns, args->gid);
/*
* Samba server ignores set of file size to zero due to bugs in some
* older clients, but we should be precise - we use SetFileSize to
@ -5833,8 +5839,8 @@ cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset,
data_offset->LastStatusChange = cpu_to_le64(args->ctime);
data_offset->LastAccessTime = cpu_to_le64(args->atime);
data_offset->LastModificationTime = cpu_to_le64(args->mtime);
data_offset->Uid = cpu_to_le64(args->uid);
data_offset->Gid = cpu_to_le64(args->gid);
data_offset->Uid = cpu_to_le64(uid);
data_offset->Gid = cpu_to_le64(gid);
/* better to leave device as zero when it is */
data_offset->DevMajor = cpu_to_le64(MAJOR(args->device));
data_offset->DevMinor = cpu_to_le64(MINOR(args->device));

66
fs/cifs/connect.c
View File

@ -987,6 +987,41 @@ static int get_option_ul(substring_t args[], unsigned long *option)
return rc;
}
static int get_option_uid(substring_t args[], kuid_t *result)
{
unsigned long value;
kuid_t uid;
int rc;
rc = get_option_ul(args, &value);
if (rc)
return rc;
uid = make_kuid(current_user_ns(), value);
if (!uid_valid(uid))
return -EINVAL;
*result = uid;
return 0;
}
static int get_option_gid(substring_t args[], kgid_t *result)
{
unsigned long value;
kgid_t gid;
int rc;
rc = get_option_ul(args, &value);
if (rc)
return rc;
gid = make_kgid(current_user_ns(), value);
if (!gid_valid(gid))
return -EINVAL;
*result = gid;
return 0;
}
static int cifs_parse_security_flavors(char *value,
struct smb_vol *vol)
@ -1424,47 +1459,42 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
/* Numeric Values */
case Opt_backupuid:
if (get_option_ul(args, &option)) {
if (get_option_uid(args, &vol->backupuid)) {
cERROR(1, "%s: Invalid backupuid value",
__func__);
goto cifs_parse_mount_err;
}
vol->backupuid = option;
vol->backupuid_specified = true;
break;
case Opt_backupgid:
if (get_option_ul(args, &option)) {
if (get_option_gid(args, &vol->backupgid)) {
cERROR(1, "%s: Invalid backupgid value",
__func__);
goto cifs_parse_mount_err;
}
vol->backupgid = option;
vol->backupgid_specified = true;
break;
case Opt_uid:
if (get_option_ul(args, &option)) {
if (get_option_uid(args, &vol->linux_uid)) {
cERROR(1, "%s: Invalid uid value",
__func__);
goto cifs_parse_mount_err;
}
vol->linux_uid = option;
uid_specified = true;
break;
case Opt_cruid:
if (get_option_ul(args, &option)) {
if (get_option_uid(args, &vol->cred_uid)) {
cERROR(1, "%s: Invalid cruid value",
__func__);
goto cifs_parse_mount_err;
}
vol->cred_uid = option;
break;
case Opt_gid:
if (get_option_ul(args, &option)) {
if (get_option_gid(args, &vol->linux_gid)) {
cERROR(1, "%s: Invalid gid value",
__func__);
goto cifs_parse_mount_err;
}
vol->linux_gid = option;
gid_specified = true;
break;
case Opt_file_mode:
@ -2241,7 +2271,7 @@ static int match_session(struct cifs_ses *ses, struct smb_vol *vol)
{
switch (ses->server->secType) {
case Kerberos:
if (vol->cred_uid != ses->cred_uid)
if (!uid_eq(vol->cred_uid, ses->cred_uid))
return 0;
break;
default:
@ -2713,7 +2743,7 @@ compare_mount_options(struct super_block *sb, struct cifs_mnt_data *mnt_data)
if (new->rsize && new->rsize < old->rsize)
return 0;
if (old->mnt_uid != new->mnt_uid || old->mnt_gid != new->mnt_gid)
if (!uid_eq(old->mnt_uid, new->mnt_uid) || !gid_eq(old->mnt_gid, new->mnt_gid))
return 0;
if (old->mnt_file_mode != new->mnt_file_mode ||
@ -3919,7 +3949,7 @@ cifs_set_vol_auth(struct smb_vol *vol, struct cifs_ses *ses)
}
static struct cifs_tcon *
cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid)
cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
{
int rc;
struct cifs_tcon *master_tcon = cifs_sb_master_tcon(cifs_sb);
@ -3989,7 +4019,7 @@ cifs_sb_tcon_pending_wait(void *unused)
/* find and return a tlink with given uid */
static struct tcon_link *
tlink_rb_search(struct rb_root *root, uid_t uid)
tlink_rb_search(struct rb_root *root, kuid_t uid)
{
struct rb_node *node = root->rb_node;
struct tcon_link *tlink;
@ -3997,9 +4027,9 @@ tlink_rb_search(struct rb_root *root, uid_t uid)
while (node) {
tlink = rb_entry(node, struct tcon_link, tl_rbnode);
if (tlink->tl_uid > uid)
if (uid_gt(tlink->tl_uid, uid))
node = node->rb_left;
else if (tlink->tl_uid < uid)
else if (uid_lt(tlink->tl_uid, uid))
node = node->rb_right;
else
return tlink;
@ -4018,7 +4048,7 @@ tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink)
tlink = rb_entry(*new, struct tcon_link, tl_rbnode);
parent = *new;
if (tlink->tl_uid > new_tlink->tl_uid)
if (uid_gt(tlink->tl_uid, new_tlink->tl_uid))
new = &((*new)->rb_left);
else
new = &((*new)->rb_right);
@ -4048,7 +4078,7 @@ struct tcon_link *
cifs_sb_tlink(struct cifs_sb_info *cifs_sb)
{
int ret;
uid_t fsuid = current_fsuid();
kuid_t fsuid = current_fsuid();
struct tcon_link *tlink, *newtlink;
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER))

18
fs/cifs/dir.c
View File

@ -342,14 +342,14 @@ cifs_do_create(struct inode *inode, struct dentry *direntry, unsigned int xid,
*created |= FILE_CREATED;
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
args.uid = (__u64) current_fsuid();
args.uid = current_fsuid();
if (inode->i_mode & S_ISGID)
args.gid = (__u64) inode->i_gid;
args.gid = inode->i_gid;
else
args.gid = (__u64) current_fsgid();
args.gid = current_fsgid();
} else {
args.uid = NO_CHANGE_64;
args.gid = NO_CHANGE_64;
args.uid = INVALID_UID; /* no change */
args.gid = INVALID_GID; /* no change */
}
CIFSSMBUnixSetFileInfo(xid, tcon, &args, fid->netfid,
current->tgid);
@ -588,11 +588,11 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode,
.device = device_number,
};
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
args.uid = (__u64) current_fsuid();
args.gid = (__u64) current_fsgid();
args.uid = current_fsuid();
args.gid = current_fsgid();
} else {
args.uid = NO_CHANGE_64;
args.gid = NO_CHANGE_64;
args.uid = INVALID_UID; /* no change */
args.gid = INVALID_GID; /* no change */
}
rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args,
cifs_sb->local_nls,

8
fs/cifs/file.c
View File

@ -515,8 +515,8 @@ int cifs_open(struct inode *inode, struct file *file)
*/
struct cifs_unix_set_info_args args = {
.mode = inode->i_mode,
.uid = NO_CHANGE_64,
.gid = NO_CHANGE_64,
.uid = INVALID_UID, /* no change */
.gid = INVALID_GID, /* no change */
.ctime = NO_CHANGE_64,
.atime = NO_CHANGE_64,
.mtime = NO_CHANGE_64,
@ -1693,7 +1693,7 @@ struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *cifs_inode,
are always at the end of the list but since the first entry might
have a close pending, we go through the whole list */
list_for_each_entry(open_file, &cifs_inode->openFileList, flist) {
if (fsuid_only && open_file->uid != current_fsuid())
if (fsuid_only && !uid_eq(open_file->uid, current_fsuid()))
continue;
if (OPEN_FMODE(open_file->f_flags) & FMODE_READ) {
if (!open_file->invalidHandle) {
@ -1746,7 +1746,7 @@ struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *cifs_inode,
list_for_each_entry(open_file, &cifs_inode->openFileList, flist) {
if (!any_available && open_file->pid != current->tgid)
continue;
if (fsuid_only && open_file->uid != current_fsuid())
if (fsuid_only && !uid_eq(open_file->uid, current_fsuid()))
continue;
if (OPEN_FMODE(open_file->f_flags) & FMODE_WRITE) {
if (!open_file->invalidHandle) {

50
fs/cifs/inode.c
View File

@ -244,15 +244,25 @@ cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info,
break;
}
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)
fattr->cf_uid = cifs_sb->mnt_uid;
else
fattr->cf_uid = le64_to_cpu(info->Uid);
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)
fattr->cf_gid = cifs_sb->mnt_gid;
else
fattr->cf_gid = le64_to_cpu(info->Gid);
fattr->cf_uid = cifs_sb->mnt_uid;
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) {
u64 id = le64_to_cpu(info->Uid);
if (id < ((uid_t)-1)) {
kuid_t uid = make_kuid(&init_user_ns, id);
if (uid_valid(uid))
fattr->cf_uid = uid;
}
}
fattr->cf_gid = cifs_sb->mnt_gid;
if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) {
u64 id = le64_to_cpu(info->Gid);
if (id < ((gid_t)-1)) {
kgid_t gid = make_kgid(&init_user_ns, id);
if (gid_valid(gid))
fattr->cf_gid = gid;
}
}
fattr->cf_nlink = le64_to_cpu(info->Nlinks);
}
@ -1245,14 +1255,14 @@ cifs_mkdir_qinfo(struct inode *parent, struct dentry *dentry, umode_t mode,
.device = 0,
};
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
args.uid = (__u64)current_fsuid();
args.uid = current_fsuid();
if (parent->i_mode & S_ISGID)
args.gid = (__u64)parent->i_gid;
args.gid = parent->i_gid;
else
args.gid = (__u64)current_fsgid();
args.gid = current_fsgid();
} else {
args.uid = NO_CHANGE_64;
args.gid = NO_CHANGE_64;
args.uid = INVALID_UID; /* no change */
args.gid = INVALID_GID; /* no change */
}
CIFSSMBUnixSetPathInfo(xid, tcon, full_path, &args,
cifs_sb->local_nls,
@ -2013,12 +2023,12 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
if (attrs->ia_valid & ATTR_UID)
args->uid = attrs->ia_uid;
else
args->uid = NO_CHANGE_64;
args->uid = INVALID_UID; /* no change */
if (attrs->ia_valid & ATTR_GID)
args->gid = attrs->ia_gid;
else
args->gid = NO_CHANGE_64;
args->gid = INVALID_GID; /* no change */
if (attrs->ia_valid & ATTR_ATIME)
args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
@ -2086,8 +2096,8 @@ static int
cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
{
unsigned int xid;
uid_t uid = NO_CHANGE_32;
gid_t gid = NO_CHANGE_32;
kuid_t uid = INVALID_UID;
kgid_t gid = INVALID_GID;
struct inode *inode = direntry->d_inode;
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
struct cifsInodeInfo *cifsInode = CIFS_I(inode);
@ -2146,7 +2156,7 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
#ifdef CONFIG_CIFS_ACL
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
if (uid != NO_CHANGE_32 || gid != NO_CHANGE_32) {
if (uid_valid(uid) || gid_valid(gid)) {
rc = id_mode_to_cifs_acl(inode, full_path, NO_CHANGE_64,
uid, gid);
if (rc) {
@ -2170,7 +2180,7 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
#ifdef CONFIG_CIFS_ACL
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
rc = id_mode_to_cifs_acl(inode, full_path, mode,
NO_CHANGE_32, NO_CHANGE_32);
INVALID_UID, INVALID_GID);
if (rc) {
cFYI(1, "%s: Setting ACL failed with error: %d",
__func__, rc);

2
fs/cifs/misc.c
View File

@ -569,7 +569,7 @@ bool
backup_cred(struct cifs_sb_info *cifs_sb)
{
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID) {
if (cifs_sb->mnt_backupuid == current_fsuid())
if (uid_eq(cifs_sb->mnt_backupuid, current_fsuid()))
return true;
}
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) {

4
fs/coda/cache.c
View File

@ -33,7 +33,7 @@ void coda_cache_enter(struct inode *inode, int mask)
spin_lock(&cii->c_lock);
cii->c_cached_epoch = atomic_read(&permission_epoch);
if (cii->c_uid != current_fsuid()) {
if (!uid_eq(cii->c_uid, current_fsuid())) {
cii->c_uid = current_fsuid();
cii->c_cached_perm = mask;
} else
@ -65,7 +65,7 @@ int coda_cache_check(struct inode *inode, int mask)
spin_lock(&cii->c_lock);
hit = (mask & cii->c_cached_perm) == mask &&
cii->c_uid == current_fsuid() &&
uid_eq(cii->c_uid, current_fsuid()) &&
cii->c_cached_epoch == atomic_read(&permission_epoch);
spin_unlock(&cii->c_lock);

2
fs/coda/coda_fs_i.h
View File

@ -25,7 +25,7 @@ struct coda_inode_info {
u_short c_flags; /* flags (see below) */
unsigned int c_mapcount; /* nr of times this inode is mapped */
unsigned int c_cached_epoch; /* epoch for cached permissions */
vuid_t c_uid; /* fsuid for cached permissions */
kuid_t c_uid; /* fsuid for cached permissions */
unsigned int c_cached_perm; /* cached access permissions */
spinlock_t c_lock;
struct inode vfs_inode;

8
fs/coda/coda_linux.c
View File

@ -100,9 +100,9 @@ void coda_vattr_to_iattr(struct inode *inode, struct coda_vattr *attr)
if (attr->va_mode != (u_short) -1)
inode->i_mode = attr->va_mode | inode_type;
if (attr->va_uid != -1)
inode->i_uid = (uid_t) attr->va_uid;
inode->i_uid = make_kuid(&init_user_ns, (uid_t) attr->va_uid);
if (attr->va_gid != -1)
inode->i_gid = (gid_t) attr->va_gid;
inode->i_gid = make_kgid(&init_user_ns, (gid_t) attr->va_gid);
if (attr->va_nlink != -1)
set_nlink(inode, attr->va_nlink);
if (attr->va_size != -1)
@ -171,10 +171,10 @@ void coda_iattr_to_vattr(struct iattr *iattr, struct coda_vattr *vattr)
vattr->va_mode = iattr->ia_mode;
}
if ( valid & ATTR_UID ) {
vattr->va_uid = (vuid_t) iattr->ia_uid;
vattr->va_uid = (vuid_t) from_kuid(&init_user_ns, iattr->ia_uid);
}
if ( valid & ATTR_GID ) {
vattr->va_gid = (vgid_t) iattr->ia_gid;
vattr->va_gid = (vgid_t) from_kgid(&init_user_ns, iattr->ia_gid);
}
if ( valid & ATTR_SIZE ) {
vattr->va_size = iattr->ia_size;

6
fs/coda/inode.c
View File

@ -20,6 +20,7 @@
#include <linux/file.h>
#include <linux/vfs.h>
#include <linux/slab.h>
#include <linux/pid_namespace.h>
#include <asm/uaccess.h>
@ -48,7 +49,7 @@ static struct inode *coda_alloc_inode(struct super_block *sb)
return NULL;
memset(&ei->c_fid, 0, sizeof(struct CodaFid));
ei->c_flags = 0;
ei->c_uid = 0;
ei->c_uid = GLOBAL_ROOT_UID;
ei->c_cached_perm = 0;
spin_lock_init(&ei->c_lock);
return &ei->vfs_inode;
@ -157,6 +158,9 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
int error;
int idx;
if (task_active_pid_ns(current) != &init_pid_ns)
return -EINVAL;
idx = get_device_index((struct coda_mount_data *) data);
/* Ignore errors in data, for backward compatibility */

7
fs/coda/psdev.c
View File

@ -37,6 +37,7 @@
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/device.h>
#include <linux/pid_namespace.h>
#include <asm/io.h>
#include <asm/poll.h>
#include <asm/uaccess.h>
@ -266,6 +267,12 @@ static int coda_psdev_open(struct inode * inode, struct file * file)
struct venus_comm *vcp;
int idx, err;
if (task_active_pid_ns(current) != &init_pid_ns)
return -EINVAL;
if (current_user_ns() != &init_user_ns)
return -EINVAL;
idx = iminor(inode);
if (idx < 0 || idx >= MAX_CODADEVS)
return -ENODEV;

10
fs/coda/upcall.c
View File

@ -50,9 +50,9 @@ static void *alloc_upcall(int opcode, int size)
return ERR_PTR(-ENOMEM);
inp->ih.opcode = opcode;
inp->ih.pid = current->pid;
inp->ih.pgid = task_pgrp_nr(current);
inp->ih.uid = current_fsuid();
inp->ih.pid = task_pid_nr_ns(current, &init_pid_ns);
inp->ih.pgid = task_pgrp_nr_ns(current, &init_pid_ns);
inp->ih.uid = from_kuid(&init_user_ns, current_fsuid());
return (void*)inp;
}
@ -157,7 +157,7 @@ int venus_lookup(struct super_block *sb, struct CodaFid *fid,
}
int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
vuid_t uid)
kuid_t uid)
{
union inputArgs *inp;
union outputArgs *outp;
@ -166,7 +166,7 @@ int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
insize = SIZE(release);
UPARG(CODA_CLOSE);
inp->ih.uid = uid;
inp->ih.uid = from_kuid(&init_user_ns, uid);
inp->coda_close.VFid = *fid;
inp->coda_close.flags = flags;

18
fs/devpts/inode.c
View File

@ -243,6 +243,13 @@ static int mknod_ptmx(struct super_block *sb)
struct dentry *root = sb->s_root;
struct pts_fs_info *fsi = DEVPTS_SB(sb);
struct pts_mount_opts *opts = &fsi->mount_opts;
kuid_t root_uid;
kgid_t root_gid;
root_uid = make_kuid(current_user_ns(), 0);
root_gid = make_kgid(current_user_ns(), 0);
if (!uid_valid(root_uid) || !gid_valid(root_gid))
return -EINVAL;
mutex_lock(&root->d_inode->i_mutex);
@ -273,6 +280,8 @@ static int mknod_ptmx(struct super_block *sb)
mode = S_IFCHR|opts->ptmxmode;
init_special_inode(inode, mode, MKDEV(TTYAUX_MAJOR, 2));
inode->i_uid = root_uid;
inode->i_gid = root_gid;
d_add(dentry, inode);
@ -438,6 +447,12 @@ static struct dentry *devpts_mount(struct file_system_type *fs_type,
if (error)
return ERR_PTR(error);
/* Require newinstance for all user namespace mounts to ensure
* the mount options are not changed.
*/
if ((current_user_ns() != &init_user_ns) && !opts.newinstance)
return ERR_PTR(-EINVAL);
if (opts.newinstance)
s = sget(fs_type, NULL, set_anon_super, flags, NULL);
else
@ -491,6 +506,9 @@ static struct file_system_type devpts_fs_type = {
.name = "devpts",
.mount = devpts_mount,
.kill_sb = devpts_kill_sb,
#ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES
.fs_flags = FS_USERNS_MOUNT | FS_USERNS_DEV_MOUNT,
#endif
};
/*

2
fs/gfs2/acl.c
View File

@ -237,7 +237,7 @@ static int gfs2_xattr_system_set(struct dentry *dentry, const char *name,
return -EINVAL;
if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode))
return value ? -EACCES : 0;
if ((current_fsuid() != inode->i_uid) && !capable(CAP_FOWNER))
if (!uid_eq(current_fsuid(), inode->i_uid) && !capable(CAP_FOWNER))
return -EPERM;
if (S_ISLNK(inode->i_mode))
return -EOPNOTSUPP;

2
fs/gfs2/bmap.c
View File

@ -1099,7 +1099,7 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
if (error)
return error;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
if (error)
return error;

2
fs/gfs2/dir.c
View File

@ -1849,7 +1849,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
if (!ht)
return -ENOMEM;
error = gfs2_quota_hold(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
error = gfs2_quota_hold(dip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
if (error)
goto out;

4
fs/gfs2/glops.c
View File

@ -322,8 +322,8 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
break;
};
ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));

3
fs/gfs2/incore.h
View File

@ -392,7 +392,6 @@ struct gfs2_revoke_replay {
};
enum {
QDF_USER = 0,
QDF_CHANGE = 1,
QDF_LOCKED = 2,
QDF_REFRESH = 3,
@ -404,7 +403,7 @@ struct gfs2_quota_data {
atomic_t qd_count;
u32 qd_id;
struct kqid qd_id;
unsigned long qd_flags; /* QDF_... */
s64 qd_change;

32
fs/gfs2/inode.c
View File

@ -368,10 +368,11 @@ static void munge_mode_uid_gid(const struct gfs2_inode *dip,
struct inode *inode)
{
if (GFS2_SB(&dip->i_inode)->sd_args.ar_suiddir &&
(dip->i_inode.i_mode & S_ISUID) && dip->i_inode.i_uid) {
(dip->i_inode.i_mode & S_ISUID) &&
!uid_eq(dip->i_inode.i_uid, GLOBAL_ROOT_UID)) {
if (S_ISDIR(inode->i_mode))
inode->i_mode |= S_ISUID;
else if (dip->i_inode.i_uid != current_fsuid())
else if (!uid_eq(dip->i_inode.i_uid, current_fsuid()))
inode->i_mode &= ~07111;
inode->i_uid = dip->i_inode.i_uid;
} else
@ -455,8 +456,8 @@ static void init_dinode(struct gfs2_inode *dip, struct gfs2_inode *ip,
di->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
di->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
di->di_mode = cpu_to_be32(ip->i_inode.i_mode);
di->di_uid = cpu_to_be32(ip->i_inode.i_uid);
di->di_gid = cpu_to_be32(ip->i_inode.i_gid);
di->di_uid = cpu_to_be32(i_uid_read(&ip->i_inode));
di->di_gid = cpu_to_be32(i_gid_read(&ip->i_inode));
di->di_nlink = 0;
di->di_size = cpu_to_be64(ip->i_inode.i_size);
di->di_blocks = cpu_to_be64(1);
@ -548,7 +549,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
if (error)
return error;
error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
error = gfs2_quota_lock(dip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
if (error)
goto fail;
@ -978,8 +979,8 @@ static int gfs2_unlink_ok(struct gfs2_inode *dip, const struct qstr *name,
return -EPERM;
if ((dip->i_inode.i_mode & S_ISVTX) &&
dip->i_inode.i_uid != current_fsuid() &&
ip->i_inode.i_uid != current_fsuid() && !capable(CAP_FOWNER))
!uid_eq(dip->i_inode.i_uid, current_fsuid()) &&
!uid_eq(ip->i_inode.i_uid, current_fsuid()) && !capable(CAP_FOWNER))
return -EPERM;
if (IS_APPEND(&dip->i_inode))
@ -1580,7 +1581,8 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
{
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
u32 ouid, ogid, nuid, ngid;
kuid_t ouid, nuid;
kgid_t ogid, ngid;
int error;
ouid = inode->i_uid;
@ -1588,16 +1590,17 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
nuid = attr->ia_uid;
ngid = attr->ia_gid;
if (!(attr->ia_valid & ATTR_UID) || ouid == nuid)
ouid = nuid = NO_QUOTA_CHANGE;
if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
ogid = ngid = NO_QUOTA_CHANGE;
if (!(attr->ia_valid & ATTR_UID) || uid_eq(ouid, nuid))
ouid = nuid = NO_UID_QUOTA_CHANGE;
if (!(attr->ia_valid & ATTR_GID) || gid_eq(ogid, ngid))
ogid = ngid = NO_GID_QUOTA_CHANGE;
error = gfs2_quota_lock(ip, nuid, ngid);
if (error)
return error;
if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) ||
!gid_eq(ogid, NO_GID_QUOTA_CHANGE)) {
error = gfs2_quota_check(ip, nuid, ngid);
if (error)
goto out_gunlock_q;
@ -1611,7 +1614,8 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
if (error)
goto out_end_trans;
if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) ||
!gid_eq(ogid, NO_GID_QUOTA_CHANGE)) {
u64 blocks = gfs2_get_inode_blocks(&ip->i_inode);
gfs2_quota_change(ip, -blocks, ouid, ogid);
gfs2_quota_change(ip, blocks, nuid, ngid);

138
fs/gfs2/quota.c
View File

@ -65,13 +65,10 @@
#include "inode.h"
#include "util.h"
#define QUOTA_USER 1
#define QUOTA_GROUP 0
struct gfs2_quota_change_host {
u64 qc_change;
u32 qc_flags; /* GFS2_QCF_... */
u32 qc_id;
struct kqid qc_id;
};
static LIST_HEAD(qd_lru_list);
@ -120,17 +117,24 @@ int gfs2_shrink_qd_memory(struct shrinker *shrink, struct shrink_control *sc)
return (atomic_read(&qd_lru_count) * sysctl_vfs_cache_pressure) / 100;
}
static u64 qd2index(struct gfs2_quota_data *qd)
{
struct kqid qid = qd->qd_id;
return (2 * (u64)from_kqid(&init_user_ns, qid)) +
(qid.type == USRQUOTA) ? 0 : 1;
}
static u64 qd2offset(struct gfs2_quota_data *qd)
{
u64 offset;
offset = 2 * (u64)qd->qd_id + !test_bit(QDF_USER, &qd->qd_flags);
offset = qd2index(qd);
offset *= sizeof(struct gfs2_quota);
return offset;
}
static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id,
static int qd_alloc(struct gfs2_sbd *sdp, struct kqid qid,
struct gfs2_quota_data **qdp)
{
struct gfs2_quota_data *qd;
@ -141,13 +145,11 @@ static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id,
return -ENOMEM;
atomic_set(&qd->qd_count, 1);
qd->qd_id = id;
if (user)
set_bit(QDF_USER, &qd->qd_flags);
qd->qd_id = qid;
qd->qd_slot = -1;
INIT_LIST_HEAD(&qd->qd_reclaim);
error = gfs2_glock_get(sdp, 2 * (u64)id + !user,
error = gfs2_glock_get(sdp, qd2index(qd),
&gfs2_quota_glops, CREATE, &qd->qd_gl);
if (error)
goto fail;
@ -161,7 +163,7 @@ static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id,
return error;
}
static int qd_get(struct gfs2_sbd *sdp, int user, u32 id,
static int qd_get(struct gfs2_sbd *sdp, struct kqid qid,
struct gfs2_quota_data **qdp)
{
struct gfs2_quota_data *qd = NULL, *new_qd = NULL;
@ -173,8 +175,7 @@ static int qd_get(struct gfs2_sbd *sdp, int user, u32 id,
found = 0;
spin_lock(&qd_lru_lock);
list_for_each_entry(qd, &sdp->sd_quota_list, qd_list) {
if (qd->qd_id == id &&
!test_bit(QDF_USER, &qd->qd_flags) == !user) {
if (qid_eq(qd->qd_id, qid)) {
if (!atomic_read(&qd->qd_count) &&
!list_empty(&qd->qd_reclaim)) {
/* Remove it from reclaim list */
@ -208,7 +209,7 @@ static int qd_get(struct gfs2_sbd *sdp, int user, u32 id,
return 0;
}
error = qd_alloc(sdp, user, id, &new_qd);
error = qd_alloc(sdp, qid, &new_qd);
if (error)
return error;
}
@ -458,12 +459,12 @@ static void qd_unlock(struct gfs2_quota_data *qd)
qd_put(qd);
}
static int qdsb_get(struct gfs2_sbd *sdp, int user, u32 id,
static int qdsb_get(struct gfs2_sbd *sdp, struct kqid qid,
struct gfs2_quota_data **qdp)
{
int error;
error = qd_get(sdp, user, id, qdp);
error = qd_get(sdp, qid, qdp);
if (error)
return error;
@ -491,7 +492,7 @@ static void qdsb_put(struct gfs2_quota_data *qd)
qd_put(qd);
}
int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_quota_data **qd;
@ -512,28 +513,30 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
return 0;
error = qdsb_get(sdp, QUOTA_USER, ip->i_inode.i_uid, qd);
error = qdsb_get(sdp, make_kqid_uid(ip->i_inode.i_uid), qd);
if (error)
goto out;
ip->i_res->rs_qa_qd_num++;
qd++;
error = qdsb_get(sdp, QUOTA_GROUP, ip->i_inode.i_gid, qd);
error = qdsb_get(sdp, make_kqid_gid(ip->i_inode.i_gid), qd);
if (error)
goto out;
ip->i_res->rs_qa_qd_num++;
qd++;
if (uid != NO_QUOTA_CHANGE && uid != ip->i_inode.i_uid) {
error = qdsb_get(sdp, QUOTA_USER, uid, qd);
if (!uid_eq(uid, NO_UID_QUOTA_CHANGE) &&
!uid_eq(uid, ip->i_inode.i_uid)) {
error = qdsb_get(sdp, make_kqid_uid(uid), qd);
if (error)
goto out;
ip->i_res->rs_qa_qd_num++;
qd++;
}
if (gid != NO_QUOTA_CHANGE && gid != ip->i_inode.i_gid) {
error = qdsb_get(sdp, QUOTA_GROUP, gid, qd);
if (!gid_eq(gid, NO_GID_QUOTA_CHANGE) &&
!gid_eq(gid, ip->i_inode.i_gid)) {
error = qdsb_get(sdp, make_kqid_gid(gid), qd);
if (error)
goto out;
ip->i_res->rs_qa_qd_num++;
@ -567,18 +570,10 @@ static int sort_qd(const void *a, const void *b)
const struct gfs2_quota_data *qd_a = *(const struct gfs2_quota_data **)a;
const struct gfs2_quota_data *qd_b = *(const struct gfs2_quota_data **)b;
if (!test_bit(QDF_USER, &qd_a->qd_flags) !=
!test_bit(QDF_USER, &qd_b->qd_flags)) {
if (test_bit(QDF_USER, &qd_a->qd_flags))
return -1;
else
return 1;
}
if (qd_a->qd_id < qd_b->qd_id)
if (qid_lt(qd_a->qd_id, qd_b->qd_id))
return -1;
if (qd_a->qd_id > qd_b->qd_id)
if (qid_lt(qd_b->qd_id, qd_a->qd_id))
return 1;
return 0;
}
@ -595,9 +590,9 @@ static void do_qc(struct gfs2_quota_data *qd, s64 change)
if (!test_bit(QDF_CHANGE, &qd->qd_flags)) {
qc->qc_change = 0;
qc->qc_flags = 0;
if (test_bit(QDF_USER, &qd->qd_flags))
if (qd->qd_id.type == USRQUOTA)
qc->qc_flags = cpu_to_be32(GFS2_QCF_USER);
qc->qc_id = cpu_to_be32(qd->qd_id);
qc->qc_id = cpu_to_be32(from_kqid(&init_user_ns, qd->qd_id));
}
x = be64_to_cpu(qc->qc_change) + change;
@ -925,7 +920,7 @@ static int do_glock(struct gfs2_quota_data *qd, int force_refresh,
return error;
}
int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_quota_data *qd;
@ -1040,13 +1035,13 @@ static int print_message(struct gfs2_quota_data *qd, char *type)
printk(KERN_INFO "GFS2: fsid=%s: quota %s for %s %u\n",
sdp->sd_fsname, type,
(test_bit(QDF_USER, &qd->qd_flags)) ? "user" : "group",
qd->qd_id);
(qd->qd_id.type == USRQUOTA) ? "user" : "group",
from_kqid(&init_user_ns, qd->qd_id));
return 0;
}
int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_quota_data *qd;
@ -1063,8 +1058,8 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
for (x = 0; x < ip->i_res->rs_qa_qd_num; x++) {
qd = ip->i_res->rs_qa_qd[x];
if (!((qd->qd_id == uid && test_bit(QDF_USER, &qd->qd_flags)) ||
(qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))))
if (!(qid_eq(qd->qd_id, make_kqid_uid(uid)) ||
qid_eq(qd->qd_id, make_kqid_gid(gid))))
continue;
value = (s64)be64_to_cpu(qd->qd_qb.qb_value);
@ -1074,10 +1069,7 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
if (be64_to_cpu(qd->qd_qb.qb_limit) && (s64)be64_to_cpu(qd->qd_qb.qb_limit) < value) {
print_message(qd, "exceeded");
quota_send_warning(make_kqid(&init_user_ns,
test_bit(QDF_USER, &qd->qd_flags) ?
USRQUOTA : GRPQUOTA,
qd->qd_id),
quota_send_warning(qd->qd_id,
sdp->sd_vfs->s_dev, QUOTA_NL_BHARDWARN);
error = -EDQUOT;
@ -1087,10 +1079,7 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
time_after_eq(jiffies, qd->qd_last_warn +
gfs2_tune_get(sdp,
gt_quota_warn_period) * HZ)) {
quota_send_warning(make_kqid(&init_user_ns,
test_bit(QDF_USER, &qd->qd_flags) ?
USRQUOTA : GRPQUOTA,
qd->qd_id),
quota_send_warning(qd->qd_id,
sdp->sd_vfs->s_dev, QUOTA_NL_BSOFTWARN);
error = print_message(qd, "warning");
qd->qd_last_warn = jiffies;
@ -1101,7 +1090,7 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
}
void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
u32 uid, u32 gid)
kuid_t uid, kgid_t gid)
{
struct gfs2_quota_data *qd;
unsigned int x;
@ -1114,8 +1103,8 @@ void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
for (x = 0; x < ip->i_res->rs_qa_qd_num; x++) {
qd = ip->i_res->rs_qa_qd[x];
if ((qd->qd_id == uid && test_bit(QDF_USER, &qd->qd_flags)) ||
(qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))) {
if (qid_eq(qd->qd_id, make_kqid_uid(uid)) ||
qid_eq(qd->qd_id, make_kqid_gid(gid))) {
do_qc(qd, change);
}
}
@ -1170,13 +1159,13 @@ static int gfs2_quota_sync_timeo(struct super_block *sb, int type)
return gfs2_quota_sync(sb, type);
}
int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id)
int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid)
{
struct gfs2_quota_data *qd;
struct gfs2_holder q_gh;
int error;
error = qd_get(sdp, user, id, &qd);
error = qd_get(sdp, qid, &qd);
if (error)
return error;
@ -1194,7 +1183,9 @@ static void gfs2_quota_change_in(struct gfs2_quota_change_host *qc, const void *
qc->qc_change = be64_to_cpu(str->qc_change);
qc->qc_flags = be32_to_cpu(str->qc_flags);
qc->qc_id = be32_to_cpu(str->qc_id);
qc->qc_id = make_kqid(&init_user_ns,
(qc->qc_flags & GFS2_QCF_USER)?USRQUOTA:GRPQUOTA,
be32_to_cpu(str->qc_id));
}
int gfs2_quota_init(struct gfs2_sbd *sdp)
@ -1257,8 +1248,7 @@ int gfs2_quota_init(struct gfs2_sbd *sdp)
if (!qc.qc_change)
continue;
error = qd_alloc(sdp, (qc.qc_flags & GFS2_QCF_USER),
qc.qc_id, &qd);
error = qd_alloc(sdp, qc.qc_id, &qd);
if (error) {
brelse(bh);
goto fail;
@ -1485,21 +1475,17 @@ static int gfs2_get_dqblk(struct super_block *sb, struct kqid qid,
struct gfs2_quota_data *qd;
struct gfs2_holder q_gh;
int error;
int type;
memset(fdq, 0, sizeof(struct fs_disk_quota));
if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
return -ESRCH; /* Crazy XFS error code */
if (qid.type == USRQUOTA)
type = QUOTA_USER;
else if (qid.type == GRPQUOTA)
type = QUOTA_GROUP;
else
if ((qid.type != USRQUOTA) &&
(qid.type != GRPQUOTA))
return -EINVAL;
error = qd_get(sdp, type, from_kqid(&init_user_ns, qid), &qd);
error = qd_get(sdp, qid, &qd);
if (error)
return error;
error = do_glock(qd, FORCE, &q_gh);
@ -1508,8 +1494,8 @@ static int gfs2_get_dqblk(struct super_block *sb, struct kqid qid,
qlvb = (struct gfs2_quota_lvb *)qd->qd_gl->gl_lksb.sb_lvbptr;
fdq->d_version = FS_DQUOT_VERSION;
fdq->d_flags = (type == QUOTA_USER) ? FS_USER_QUOTA : FS_GROUP_QUOTA;
fdq->d_id = from_kqid(&init_user_ns, qid);
fdq->d_flags = (qid.type == USRQUOTA) ? FS_USER_QUOTA : FS_GROUP_QUOTA;
fdq->d_id = from_kqid_munged(current_user_ns(), qid);
fdq->d_blk_hardlimit = be64_to_cpu(qlvb->qb_limit) << sdp->sd_fsb2bb_shift;
fdq->d_blk_softlimit = be64_to_cpu(qlvb->qb_warn) << sdp->sd_fsb2bb_shift;
fdq->d_bcount = be64_to_cpu(qlvb->qb_value) << sdp->sd_fsb2bb_shift;
@ -1535,32 +1521,18 @@ static int gfs2_set_dqblk(struct super_block *sb, struct kqid qid,
int alloc_required;
loff_t offset;
int error;
int type;
if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
return -ESRCH; /* Crazy XFS error code */
switch(qid.type) {
case USRQUOTA:
type = QUOTA_USER;
if (fdq->d_flags != FS_USER_QUOTA)
return -EINVAL;
break;
case GRPQUOTA:
type = QUOTA_GROUP;
if (fdq->d_flags != FS_GROUP_QUOTA)
return -EINVAL;
break;
default:
if ((qid.type != USRQUOTA) &&
(qid.type != GRPQUOTA))
return -EINVAL;
}
if (fdq->d_fieldmask & ~GFS2_FIELDMASK)
return -EINVAL;
if (fdq->d_id != from_kqid(&init_user_ns, qid))
return -EINVAL;
error = qd_get(sdp, type, from_kqid(&init_user_ns, qid), &qd);
error = qd_get(sdp, qid, &qd);
if (error)
return error;

15
fs/gfs2/quota.h
View File

@ -14,20 +14,21 @@ struct gfs2_inode;
struct gfs2_sbd;
struct shrink_control;
#define NO_QUOTA_CHANGE ((u32)-1)
#define NO_UID_QUOTA_CHANGE INVALID_UID
#define NO_GID_QUOTA_CHANGE INVALID_GID
extern int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid);
extern int gfs2_quota_hold(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
extern void gfs2_quota_unhold(struct gfs2_inode *ip);
extern int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid);
extern int gfs2_quota_lock(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
extern void gfs2_quota_unlock(struct gfs2_inode *ip);
extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
extern int gfs2_quota_check(struct gfs2_inode *ip, kuid_t uid, kgid_t gid);
extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
u32 uid, u32 gid);
kuid_t uid, kgid_t gid);
extern int gfs2_quota_sync(struct super_block *sb, int type);
extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, struct kqid qid);
extern int gfs2_quota_init(struct gfs2_sbd *sdp);
extern void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
@ -41,7 +42,7 @@ static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
int ret;
if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
return 0;
ret = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
if (ret)
return ret;
if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)

6
fs/gfs2/super.c
View File

@ -673,8 +673,8 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
str->di_num.no_addr = cpu_to_be64(ip->i_no_addr);
str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino);
str->di_mode = cpu_to_be32(ip->i_inode.i_mode);
str->di_uid = cpu_to_be32(ip->i_inode.i_uid);
str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
str->di_uid = cpu_to_be32(i_uid_read(&ip->i_inode));
str->di_gid = cpu_to_be32(i_gid_read(&ip->i_inode));
str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink);
str->di_size = cpu_to_be64(i_size_read(&ip->i_inode));
str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode));
@ -1376,7 +1376,7 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
if (error)
return error;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
if (error)
return error;

14
fs/gfs2/sys.c
View File

@ -173,6 +173,7 @@ static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
struct kqid qid;
int error;
u32 id;
@ -181,13 +182,18 @@ static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
id = simple_strtoul(buf, NULL, 0);
error = gfs2_quota_refresh(sdp, 1, id);
qid = make_kqid(current_user_ns(), USRQUOTA, id);
if (!qid_valid(qid))
return -EINVAL;
error = gfs2_quota_refresh(sdp, qid);
return error ? error : len;
}
static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
size_t len)
{
struct kqid qid;
int error;
u32 id;
@ -196,7 +202,11 @@ static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
id = simple_strtoul(buf, NULL, 0);
error = gfs2_quota_refresh(sdp, 0, id);
qid = make_kqid(current_user_ns(), GRPQUOTA, id);
if (!qid_valid(qid))
return -EINVAL;
error = gfs2_quota_refresh(sdp, qid);
return error ? error : len;
}

4
fs/gfs2/xattr.c
View File

@ -331,7 +331,7 @@ static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
if (error)
return error;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
if (error)
goto out_alloc;
@ -1461,7 +1461,7 @@ int gfs2_ea_dealloc(struct gfs2_inode *ip)
if (error)
return error;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE);
if (error)
return error;

55
fs/ncpfs/inode.c
View File

@ -331,12 +331,15 @@ static int ncp_show_options(struct seq_file *seq, struct dentry *root)
struct ncp_server *server = NCP_SBP(root->d_sb);
unsigned int tmp;
if (server->m.uid != 0)
seq_printf(seq, ",uid=%u", server->m.uid);
if (server->m.gid != 0)
seq_printf(seq, ",gid=%u", server->m.gid);
if (server->m.mounted_uid != 0)
seq_printf(seq, ",owner=%u", server->m.mounted_uid);
if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID))
seq_printf(seq, ",uid=%u",
from_kuid_munged(&init_user_ns, server->m.uid));
if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID))
seq_printf(seq, ",gid=%u",
from_kgid_munged(&init_user_ns, server->m.gid));
if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID))
seq_printf(seq, ",owner=%u",
from_kuid_munged(&init_user_ns, server->m.mounted_uid));
tmp = server->m.file_mode & S_IALLUGO;
if (tmp != NCP_DEFAULT_FILE_MODE)
seq_printf(seq, ",mode=0%o", tmp);
@ -381,13 +384,13 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
data->flags = 0;
data->int_flags = 0;
data->mounted_uid = 0;
data->mounted_uid = GLOBAL_ROOT_UID;
data->wdog_pid = NULL;
data->ncp_fd = ~0;
data->time_out = NCP_DEFAULT_TIME_OUT;
data->retry_count = NCP_DEFAULT_RETRY_COUNT;
data->uid = 0;
data->gid = 0;
data->uid = GLOBAL_ROOT_UID;
data->gid = GLOBAL_ROOT_GID;
data->file_mode = NCP_DEFAULT_FILE_MODE;
data->dir_mode = NCP_DEFAULT_DIR_MODE;
data->info_fd = -1;
@ -399,13 +402,19 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options)
goto err;
switch (optval) {
case 'u':
data->uid = optint;
data->uid = make_kuid(current_user_ns(), optint);
if (!uid_valid(data->uid))
goto err;
break;
case 'g':
data->gid = optint;
data->gid = make_kgid(current_user_ns(), optint);
if (!gid_valid(data->gid))
goto err;
break;
case 'o':
data->mounted_uid = optint;
data->mounted_uid = make_kuid(current_user_ns(), optint);
if (!uid_valid(data->mounted_uid))
goto err;
break;
case 'm':
data->file_mode = optint;
@ -480,13 +489,13 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
data.flags = md->flags;
data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
data.mounted_uid = md->mounted_uid;
data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
data.wdog_pid = find_get_pid(md->wdog_pid);
data.ncp_fd = md->ncp_fd;
data.time_out = md->time_out;
data.retry_count = md->retry_count;
data.uid = md->uid;
data.gid = md->gid;
data.uid = make_kuid(current_user_ns(), md->uid);
data.gid = make_kgid(current_user_ns(), md->gid);
data.file_mode = md->file_mode;
data.dir_mode = md->dir_mode;
data.info_fd = -1;
@ -499,13 +508,13 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
data.flags = md->flags;
data.mounted_uid = md->mounted_uid;
data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
data.wdog_pid = find_get_pid(md->wdog_pid);
data.ncp_fd = md->ncp_fd;
data.time_out = md->time_out;
data.retry_count = md->retry_count;
data.uid = md->uid;
data.gid = md->gid;
data.uid = make_kuid(current_user_ns(), md->uid);
data.gid = make_kgid(current_user_ns(), md->gid);
data.file_mode = md->file_mode;
data.dir_mode = md->dir_mode;
data.info_fd = -1;
@ -520,6 +529,10 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
goto out;
break;
}
error = -EINVAL;
if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) ||
!gid_valid(data.gid))
goto out;
error = -EBADF;
ncp_filp = fget(data.ncp_fd);
if (!ncp_filp)
@ -886,12 +899,10 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
goto out;
result = -EPERM;
if (((attr->ia_valid & ATTR_UID) &&
(attr->ia_uid != server->m.uid)))
if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid))
goto out;
if (((attr->ia_valid & ATTR_GID) &&
(attr->ia_gid != server->m.gid)))
if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid))
goto out;
if (((attr->ia_valid & ATTR_MODE) &&

25
fs/ncpfs/ioctl.c
View File

@ -45,7 +45,7 @@ ncp_get_fs_info(struct ncp_server * server, struct inode *inode,
return -EINVAL;
}
/* TODO: info.addr = server->m.serv_addr; */
SET_UID(info.mounted_uid, server->m.mounted_uid);
SET_UID(info.mounted_uid, from_kuid_munged(current_user_ns(), server->m.mounted_uid));
info.connection = server->connection;
info.buffer_size = server->buffer_size;
info.volume_number = NCP_FINFO(inode)->volNumber;
@ -69,7 +69,7 @@ ncp_get_fs_info_v2(struct ncp_server * server, struct inode *inode,
DPRINTK("info.version invalid: %d\n", info2.version);
return -EINVAL;
}
info2.mounted_uid = server->m.mounted_uid;
info2.mounted_uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid);
info2.connection = server->connection;
info2.buffer_size = server->buffer_size;
info2.volume_number = NCP_FINFO(inode)->volNumber;
@ -135,7 +135,7 @@ ncp_get_compat_fs_info_v2(struct ncp_server * server, struct inode *inode,
DPRINTK("info.version invalid: %d\n", info2.version);
return -EINVAL;
}
info2.mounted_uid = server->m.mounted_uid;
info2.mounted_uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid);
info2.connection = server->connection;
info2.buffer_size = server->buffer_size;
info2.volume_number = NCP_FINFO(inode)->volNumber;
@ -348,22 +348,25 @@ static long __ncp_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg
{
u16 uid;
SET_UID(uid, server->m.mounted_uid);
SET_UID(uid, from_kuid_munged(current_user_ns(), server->m.mounted_uid));
if (put_user(uid, (u16 __user *)argp))
return -EFAULT;
return 0;
}
case NCP_IOC_GETMOUNTUID32:
if (put_user(server->m.mounted_uid,
(u32 __user *)argp))
{
uid_t uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid);
if (put_user(uid, (u32 __user *)argp))
return -EFAULT;
return 0;
}
case NCP_IOC_GETMOUNTUID64:
if (put_user(server->m.mounted_uid,
(u64 __user *)argp))
{
uid_t uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid);
if (put_user(uid, (u64 __user *)argp))
return -EFAULT;
return 0;
}
case NCP_IOC_GETROOT:
{
struct ncp_setroot_ioctl sr;
@ -810,7 +813,7 @@ long ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct inode *inode = filp->f_dentry->d_inode;
struct ncp_server *server = NCP_SERVER(inode);
uid_t uid = current_uid();
kuid_t uid = current_uid();
int need_drop_write = 0;
long ret;
@ -824,7 +827,7 @@ long ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
break;
}
if (server->m.mounted_uid != uid) {
if (!uid_eq(server->m.mounted_uid, uid)) {
switch (cmd) {
/*
* Only mount owner can issue these ioctls. Information

6
fs/ncpfs/ncp_fs_sb.h
View File

@ -23,15 +23,15 @@ struct ncp_mount_data_kernel {
unsigned long flags; /* NCP_MOUNT_* flags */
unsigned int int_flags; /* internal flags */
#define NCP_IMOUNT_LOGGEDIN_POSSIBLE 0x0001
uid_t mounted_uid; /* Who may umount() this filesystem? */
kuid_t mounted_uid; /* Who may umount() this filesystem? */
struct pid *wdog_pid; /* Who cares for our watchdog packets? */
unsigned int ncp_fd; /* The socket to the ncp port */
unsigned int time_out; /* How long should I wait after
sending a NCP request? */
unsigned int retry_count; /* And how often should I retry? */
unsigned char mounted_vol[NCP_VOLNAME_LEN + 1];
uid_t uid;
gid_t gid;
kuid_t uid;
kgid_t gid;
umode_t file_mode;
umode_t dir_mode;
int info_fd;

53
fs/nfs/idmap.c
View File

@ -97,7 +97,7 @@ static void nfs_fattr_free_group_name(struct nfs_fattr *fattr)
static bool nfs_fattr_map_owner_name(struct nfs_server *server, struct nfs_fattr *fattr)
{
struct nfs4_string *owner = fattr->owner_name;
__u32 uid;
kuid_t uid;
if (!(fattr->valid & NFS_ATTR_FATTR_OWNER_NAME))
return false;
@ -111,7 +111,7 @@ static bool nfs_fattr_map_owner_name(struct nfs_server *server, struct nfs_fattr
static bool nfs_fattr_map_group_name(struct nfs_server *server, struct nfs_fattr *fattr)
{
struct nfs4_string *group = fattr->group_name;
__u32 gid;
kgid_t gid;
if (!(fattr->valid & NFS_ATTR_FATTR_GROUP_NAME))
return false;
@ -193,7 +193,8 @@ static int nfs_idmap_init_keyring(void)
if (!cred)
return -ENOMEM;
keyring = keyring_alloc(".id_resolver", 0, 0, cred,
keyring = keyring_alloc(".id_resolver",
GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred,
(KEY_POS_ALL & ~KEY_POS_SETATTR) |
KEY_USR_VIEW | KEY_USR_READ,
KEY_ALLOC_NOT_IN_QUOTA, NULL);
@ -836,43 +837,61 @@ idmap_release_pipe(struct inode *inode)
nfs_idmap_abort_pipe_upcall(idmap, -EPIPE);
}
int nfs_map_name_to_uid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *uid)
int nfs_map_name_to_uid(const struct nfs_server *server, const char *name, size_t namelen, kuid_t *uid)
{
struct idmap *idmap = server->nfs_client->cl_idmap;
__u32 id = -1;
int ret = 0;
if (nfs_map_string_to_numeric(name, namelen, uid))
return 0;
return nfs_idmap_lookup_id(name, namelen, "uid", uid, idmap);
if (!nfs_map_string_to_numeric(name, namelen, &id))
ret = nfs_idmap_lookup_id(name, namelen, "uid", &id, idmap);
if (ret == 0) {
*uid = make_kuid(&init_user_ns, id);
if (!uid_valid(*uid))
ret = -ERANGE;
}
return ret;
}
int nfs_map_group_to_gid(const struct nfs_server *server, const char *name, size_t namelen, __u32 *gid)
int nfs_map_group_to_gid(const struct nfs_server *server, const char *name, size_t namelen, kgid_t *gid)
{
struct idmap *idmap = server->nfs_client->cl_idmap;
__u32 id = -1;
int ret = 0;
if (nfs_map_string_to_numeric(name, namelen, gid))
return 0;
return nfs_idmap_lookup_id(name, namelen, "gid", gid, idmap);
if (!nfs_map_string_to_numeric(name, namelen, &id))
ret = nfs_idmap_lookup_id(name, namelen, "gid", &id, idmap);
if (ret == 0) {
*gid = make_kgid(&init_user_ns, id);
if (!gid_valid(*gid))
ret = -ERANGE;
}
return ret;
}
int nfs_map_uid_to_name(const struct nfs_server *server, __u32 uid, char *buf, size_t buflen)
int nfs_map_uid_to_name(const struct nfs_server *server, kuid_t uid, char *buf, size_t buflen)
{
struct idmap *idmap = server->nfs_client->cl_idmap;
int ret = -EINVAL;
__u32 id;
id = from_kuid(&init_user_ns, uid);
if (!(server->caps & NFS_CAP_UIDGID_NOMAP))
ret = nfs_idmap_lookup_name(uid, "user", buf, buflen, idmap);
ret = nfs_idmap_lookup_name(id, "user", buf, buflen, idmap);
if (ret < 0)
ret = nfs_map_numeric_to_string(uid, buf, buflen);
ret = nfs_map_numeric_to_string(id, buf, buflen);
return ret;
}
int nfs_map_gid_to_group(const struct nfs_server *server, __u32 gid, char *buf, size_t buflen)
int nfs_map_gid_to_group(const struct nfs_server *server, kgid_t gid, char *buf, size_t buflen)
{
struct idmap *idmap = server->nfs_client->cl_idmap;
int ret = -EINVAL;
__u32 id;
id = from_kgid(&init_user_ns, gid);
if (!(server->caps & NFS_CAP_UIDGID_NOMAP))
ret = nfs_idmap_lookup_name(gid, "group", buf, buflen, idmap);
ret = nfs_idmap_lookup_name(id, "group", buf, buflen, idmap);
if (ret < 0)
ret = nfs_map_numeric_to_string(gid, buf, buflen);
ret = nfs_map_numeric_to_string(id, buf, buflen);
return ret;
}

12
fs/nfs/inode.c
View File

@ -332,8 +332,8 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
inode->i_version = 0;
inode->i_size = 0;
clear_nlink(inode);
inode->i_uid = -2;
inode->i_gid = -2;
inode->i_uid = make_kuid(&init_user_ns, -2);
inode->i_gid = make_kgid(&init_user_ns, -2);
inode->i_blocks = 0;
memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
nfsi->write_io = 0;
@ -1006,9 +1006,9 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
/* Have any file permissions changed? */
if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO))
invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && inode->i_uid != fattr->uid)
if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, fattr->uid))
invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && inode->i_gid != fattr->gid)
if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, fattr->gid))
invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
/* Has the link count changed? */
@ -1437,7 +1437,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
| NFS_INO_REVAL_FORCED);
if (fattr->valid & NFS_ATTR_FATTR_OWNER) {
if (inode->i_uid != fattr->uid) {
if (!uid_eq(inode->i_uid, fattr->uid)) {
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
inode->i_uid = fattr->uid;
}
@ -1448,7 +1448,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
| NFS_INO_REVAL_FORCED);
if (fattr->valid & NFS_ATTR_FATTR_GROUP) {
if (inode->i_gid != fattr->gid) {
if (!gid_eq(inode->i_gid, fattr->gid)) {
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
inode->i_gid = fattr->gid;
}

19
fs/nfs/nfs2xdr.c
View File

@ -290,8 +290,13 @@ static int decode_fattr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
fattr->mode = be32_to_cpup(p++);
fattr->nlink = be32_to_cpup(p++);
fattr->uid = be32_to_cpup(p++);
fattr->gid = be32_to_cpup(p++);
fattr->uid = make_kuid(&init_user_ns, be32_to_cpup(p++));
if (!uid_valid(fattr->uid))
goto out_uid;
fattr->gid = make_kgid(&init_user_ns, be32_to_cpup(p++));
if (!gid_valid(fattr->gid))
goto out_gid;
fattr->size = be32_to_cpup(p++);
fattr->du.nfs2.blocksize = be32_to_cpup(p++);
@ -313,6 +318,12 @@ static int decode_fattr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime);
return 0;
out_uid:
dprintk("NFS: returned invalid uid\n");
return -EINVAL;
out_gid:
dprintk("NFS: returned invalid gid\n");
return -EINVAL;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
@ -351,11 +362,11 @@ static void encode_sattr(struct xdr_stream *xdr, const struct iattr *attr)
else
*p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
if (attr->ia_valid & ATTR_UID)
*p++ = cpu_to_be32(attr->ia_uid);
*p++ = cpu_to_be32(from_kuid(&init_user_ns, attr->ia_uid));
else
*p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
if (attr->ia_valid & ATTR_GID)
*p++ = cpu_to_be32(attr->ia_gid);
*p++ = cpu_to_be32(from_kgid(&init_user_ns, attr->ia_gid));
else
*p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
if (attr->ia_valid & ATTR_SIZE)

18
fs/nfs/nfs3xdr.c
View File

@ -592,13 +592,13 @@ static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
if (attr->ia_valid & ATTR_UID) {
*p++ = xdr_one;
*p++ = cpu_to_be32(attr->ia_uid);
*p++ = cpu_to_be32(from_kuid(&init_user_ns, attr->ia_uid));
} else
*p++ = xdr_zero;
if (attr->ia_valid & ATTR_GID) {
*p++ = xdr_one;
*p++ = cpu_to_be32(attr->ia_gid);
*p++ = cpu_to_be32(from_kgid(&init_user_ns, attr->ia_gid));
} else
*p++ = xdr_zero;
@ -657,8 +657,12 @@ static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr)
fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode;
fattr->nlink = be32_to_cpup(p++);
fattr->uid = be32_to_cpup(p++);
fattr->gid = be32_to_cpup(p++);
fattr->uid = make_kuid(&init_user_ns, be32_to_cpup(p++));
if (!uid_valid(fattr->uid))
goto out_uid;
fattr->gid = make_kgid(&init_user_ns, be32_to_cpup(p++));
if (!gid_valid(fattr->gid))
goto out_gid;
p = xdr_decode_size3(p, &fattr->size);
p = xdr_decode_size3(p, &fattr->du.nfs3.used);
@ -675,6 +679,12 @@ static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr)
fattr->valid |= NFS_ATTR_FATTR_V3;
return 0;
out_uid:
dprintk("NFS: returned invalid uid\n");
return -EINVAL;
out_gid:
dprintk("NFS: returned invalid gid\n");
return -EINVAL;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;

16
fs/nfs/nfs4xdr.c
View File

@ -1002,7 +1002,7 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const
owner_namelen = nfs_map_uid_to_name(server, iap->ia_uid, owner_name, IDMAP_NAMESZ);
if (owner_namelen < 0) {
dprintk("nfs: couldn't resolve uid %d to string\n",
iap->ia_uid);
from_kuid(&init_user_ns, iap->ia_uid));
/* XXX */
strcpy(owner_name, "nobody");
owner_namelen = sizeof("nobody") - 1;
@ -1014,7 +1014,7 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const
owner_grouplen = nfs_map_gid_to_group(server, iap->ia_gid, owner_group, IDMAP_NAMESZ);
if (owner_grouplen < 0) {
dprintk("nfs: couldn't resolve gid %d to string\n",
iap->ia_gid);
from_kgid(&init_user_ns, iap->ia_gid));
strcpy(owner_group, "nobody");
owner_grouplen = sizeof("nobody") - 1;
/* goto out; */
@ -3778,14 +3778,14 @@ static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t
}
static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
const struct nfs_server *server, uint32_t *uid,
const struct nfs_server *server, kuid_t *uid,
struct nfs4_string *owner_name)
{
uint32_t len;
__be32 *p;
int ret = 0;
*uid = -2;
*uid = make_kuid(&init_user_ns, -2);
if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
@ -3813,7 +3813,7 @@ static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
__func__, len);
bitmap[1] &= ~FATTR4_WORD1_OWNER;
}
dprintk("%s: uid=%d\n", __func__, (int)*uid);
dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid));
return ret;
out_overflow:
print_overflow_msg(__func__, xdr);
@ -3821,14 +3821,14 @@ static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
}
static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
const struct nfs_server *server, uint32_t *gid,
const struct nfs_server *server, kgid_t *gid,
struct nfs4_string *group_name)
{
uint32_t len;
__be32 *p;
int ret = 0;
*gid = -2;
*gid = make_kgid(&init_user_ns, -2);
if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
return -EIO;
if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
@ -3856,7 +3856,7 @@ static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
__func__, len);
bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
}
dprintk("%s: gid=%d\n", __func__, (int)*gid);
dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid));
return ret;
out_overflow:
print_overflow_msg(__func__, xdr);

41
fs/nfs_common/nfsacl.c
View File

@ -38,8 +38,8 @@ struct nfsacl_encode_desc {
unsigned int count;
struct posix_acl *acl;
int typeflag;
uid_t uid;
gid_t gid;
kuid_t uid;
kgid_t gid;
};
struct nfsacl_simple_acl {
@ -60,14 +60,16 @@ xdr_nfsace_encode(struct xdr_array2_desc *desc, void *elem)
*p++ = htonl(entry->e_tag | nfsacl_desc->typeflag);
switch(entry->e_tag) {
case ACL_USER_OBJ:
*p++ = htonl(nfsacl_desc->uid);
*p++ = htonl(from_kuid(&init_user_ns, nfsacl_desc->uid));
break;
case ACL_GROUP_OBJ:
*p++ = htonl(nfsacl_desc->gid);
*p++ = htonl(from_kgid(&init_user_ns, nfsacl_desc->gid));
break;
case ACL_USER:
*p++ = htonl(from_kuid(&init_user_ns, entry->e_uid));
break;
case ACL_GROUP:
*p++ = htonl(entry->e_id);
*p++ = htonl(from_kgid(&init_user_ns, entry->e_gid));
break;
default: /* Solaris depends on that! */
*p++ = 0;
@ -148,6 +150,7 @@ xdr_nfsace_decode(struct xdr_array2_desc *desc, void *elem)
(struct nfsacl_decode_desc *) desc;
__be32 *p = elem;
struct posix_acl_entry *entry;
unsigned int id;
if (!nfsacl_desc->acl) {
if (desc->array_len > NFS_ACL_MAX_ENTRIES)
@ -160,14 +163,22 @@ xdr_nfsace_decode(struct xdr_array2_desc *desc, void *elem)
entry = &nfsacl_desc->acl->a_entries[nfsacl_desc->count++];
entry->e_tag = ntohl(*p++) & ~NFS_ACL_DEFAULT;
entry->e_id = ntohl(*p++);
id = ntohl(*p++);
entry->e_perm = ntohl(*p++);
switch(entry->e_tag) {
case ACL_USER_OBJ:
case ACL_USER:
case ACL_GROUP_OBJ:
entry->e_uid = make_kuid(&init_user_ns, id);
if (!uid_valid(entry->e_uid))
return -EINVAL;
break;
case ACL_GROUP:
entry->e_gid = make_kgid(&init_user_ns, id);
if (!gid_valid(entry->e_gid))
return -EINVAL;
break;
case ACL_USER_OBJ:
case ACL_GROUP_OBJ:
case ACL_OTHER:
if (entry->e_perm & ~S_IRWXO)
return -EINVAL;
@ -190,9 +201,13 @@ cmp_acl_entry(const void *x, const void *y)
if (a->e_tag != b->e_tag)
return a->e_tag - b->e_tag;
else if (a->e_id > b->e_id)
else if ((a->e_tag == ACL_USER) && uid_gt(a->e_uid, b->e_uid))
return 1;
else if (a->e_id < b->e_id)
else if ((a->e_tag == ACL_USER) && uid_lt(a->e_uid, b->e_uid))
return -1;
else if ((a->e_tag == ACL_GROUP) && gid_gt(a->e_gid, b->e_gid))
return 1;
else if ((a->e_tag == ACL_GROUP) && gid_lt(a->e_gid, b->e_gid))
return -1;
else
return 0;
@ -213,22 +228,18 @@ posix_acl_from_nfsacl(struct posix_acl *acl)
sort(acl->a_entries, acl->a_count, sizeof(struct posix_acl_entry),
cmp_acl_entry, NULL);
/* Clear undefined identifier fields and find the ACL_GROUP_OBJ
and ACL_MASK entries. */
/* Find the ACL_GROUP_OBJ and ACL_MASK entries. */
FOREACH_ACL_ENTRY(pa, acl, pe) {
switch(pa->e_tag) {
case ACL_USER_OBJ:
pa->e_id = ACL_UNDEFINED_ID;
break;
case ACL_GROUP_OBJ:
pa->e_id = ACL_UNDEFINED_ID;
group_obj = pa;
break;
case ACL_MASK:
mask = pa;
/* fall through */
case ACL_OTHER:
pa->e_id = ACL_UNDEFINED_ID;
break;
}
}

2
fs/nfsd/acl.h
View File

@ -44,8 +44,6 @@
struct nfs4_acl *nfs4_acl_new(int);
int nfs4_acl_get_whotype(char *, u32);
int nfs4_acl_write_who(int who, char *p);
int nfs4_acl_permission(struct nfs4_acl *acl, uid_t owner, gid_t group,
uid_t who, u32 mask);
#define NFS4_ACL_TYPE_DEFAULT 0x01
#define NFS4_ACL_DIR 0x02

12
fs/nfsd/auth.c
View File

@ -47,9 +47,9 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
if (!gi)
goto oom;
} else if (flags & NFSEXP_ROOTSQUASH) {
if (!new->fsuid)
if (uid_eq(new->fsuid, GLOBAL_ROOT_UID))
new->fsuid = exp->ex_anon_uid;
if (!new->fsgid)
if (gid_eq(new->fsgid, GLOBAL_ROOT_GID))
new->fsgid = exp->ex_anon_gid;
gi = groups_alloc(rqgi->ngroups);
@ -58,7 +58,7 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
for (i = 0; i < rqgi->ngroups; i++) {
if (gid_eq(GLOBAL_ROOT_GID, GROUP_AT(rqgi, i)))
GROUP_AT(gi, i) = make_kgid(&init_user_ns, exp->ex_anon_gid);
GROUP_AT(gi, i) = exp->ex_anon_gid;
else
GROUP_AT(gi, i) = GROUP_AT(rqgi, i);
}
@ -66,9 +66,9 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
gi = get_group_info(rqgi);
}
if (new->fsuid == (uid_t) -1)
if (uid_eq(new->fsuid, INVALID_UID))
new->fsuid = exp->ex_anon_uid;
if (new->fsgid == (gid_t) -1)
if (gid_eq(new->fsgid, INVALID_GID))
new->fsgid = exp->ex_anon_gid;
ret = set_groups(new, gi);
@ -76,7 +76,7 @@ int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
if (ret < 0)
goto error;
if (new->fsuid)
if (!uid_eq(new->fsuid, GLOBAL_ROOT_UID))
new->cap_effective = cap_drop_nfsd_set(new->cap_effective);
else
new->cap_effective = cap_raise_nfsd_set(new->cap_effective,

6
fs/nfsd/auth.h
View File

@ -1,6 +1,5 @@
/*
* nfsd-specific authentication stuff.
* uid/gid mapping not yet implemented.
*
* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
*/
@ -8,11 +7,6 @@
#ifndef LINUX_NFSD_AUTH_H
#define LINUX_NFSD_AUTH_H
#define nfsd_luid(rq, uid) ((u32)(uid))
#define nfsd_lgid(rq, gid) ((u32)(gid))
#define nfsd_ruid(rq, uid) ((u32)(uid))
#define nfsd_rgid(rq, gid) ((u32)(gid))
/*
* Set the current process's fsuid/fsgid etc to those of the NFS
* client user

22
fs/nfsd/export.c
View File

@ -544,13 +544,17 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
err = get_int(&mesg, &an_int);
if (err)
goto out3;
exp.ex_anon_uid= an_int;
exp.ex_anon_uid= make_kuid(&init_user_ns, an_int);
if (!uid_valid(exp.ex_anon_uid))
goto out3;
/* anon gid */
err = get_int(&mesg, &an_int);
if (err)
goto out3;
exp.ex_anon_gid= an_int;
exp.ex_anon_gid= make_kgid(&init_user_ns, an_int);
if (!gid_valid(exp.ex_anon_gid))
goto out3;
/* fsid */
err = get_int(&mesg, &an_int);
@ -613,7 +617,7 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
}
static void exp_flags(struct seq_file *m, int flag, int fsid,
uid_t anonu, uid_t anong, struct nfsd4_fs_locations *fslocs);
kuid_t anonu, kgid_t anong, struct nfsd4_fs_locations *fslocs);
static void show_secinfo(struct seq_file *m, struct svc_export *exp);
static int svc_export_show(struct seq_file *m,
@ -1179,15 +1183,17 @@ static void show_secinfo(struct seq_file *m, struct svc_export *exp)
}
static void exp_flags(struct seq_file *m, int flag, int fsid,
uid_t anonu, uid_t anong, struct nfsd4_fs_locations *fsloc)
kuid_t anonu, kgid_t anong, struct nfsd4_fs_locations *fsloc)
{
show_expflags(m, flag, NFSEXP_ALLFLAGS);
if (flag & NFSEXP_FSID)
seq_printf(m, ",fsid=%d", fsid);
if (anonu != (uid_t)-2 && anonu != (0x10000-2))
seq_printf(m, ",anonuid=%u", anonu);
if (anong != (gid_t)-2 && anong != (0x10000-2))
seq_printf(m, ",anongid=%u", anong);
if (!uid_eq(anonu, make_kuid(&init_user_ns, (uid_t)-2)) &&
!uid_eq(anonu, make_kuid(&init_user_ns, 0x10000-2)))
seq_printf(m, ",anonuid=%u", from_kuid(&init_user_ns, anonu));
if (!gid_eq(anong, make_kgid(&init_user_ns, (gid_t)-2)) &&
!gid_eq(anong, make_kgid(&init_user_ns, 0x10000-2)))
seq_printf(m, ",anongid=%u", from_kgid(&init_user_ns, anong));
if (fsloc && fsloc->locations_count > 0) {
char *loctype = (fsloc->migrated) ? "refer" : "replicas";
int i;

8
fs/nfsd/idmap.h
View File

@ -54,9 +54,9 @@ static inline void nfsd_idmap_shutdown(struct net *net)
}
#endif
__be32 nfsd_map_name_to_uid(struct svc_rqst *, const char *, size_t, __u32 *);
__be32 nfsd_map_name_to_gid(struct svc_rqst *, const char *, size_t, __u32 *);
int nfsd_map_uid_to_name(struct svc_rqst *, __u32, char *);
int nfsd_map_gid_to_name(struct svc_rqst *, __u32, char *);
__be32 nfsd_map_name_to_uid(struct svc_rqst *, const char *, size_t, kuid_t *);
__be32 nfsd_map_name_to_gid(struct svc_rqst *, const char *, size_t, kgid_t *);
int nfsd_map_uid_to_name(struct svc_rqst *, kuid_t, char *);
int nfsd_map_gid_to_name(struct svc_rqst *, kgid_t, char *);
#endif /* LINUX_NFSD_IDMAP_H */

14
fs/nfsd/nfs3xdr.c
View File

@ -105,12 +105,14 @@ decode_sattr3(__be32 *p, struct iattr *iap)
iap->ia_mode = ntohl(*p++);
}
if (*p++) {
iap->ia_valid |= ATTR_UID;
iap->ia_uid = ntohl(*p++);
iap->ia_uid = make_kuid(&init_user_ns, ntohl(*p++));
if (uid_valid(iap->ia_uid))
iap->ia_valid |= ATTR_UID;
}
if (*p++) {
iap->ia_valid |= ATTR_GID;
iap->ia_gid = ntohl(*p++);
iap->ia_gid = make_kgid(&init_user_ns, ntohl(*p++));
if (gid_valid(iap->ia_gid))
iap->ia_valid |= ATTR_GID;
}
if (*p++) {
u64 newsize;
@ -167,8 +169,8 @@ encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
*p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]);
*p++ = htonl((u32) stat->mode);
*p++ = htonl((u32) stat->nlink);
*p++ = htonl((u32) nfsd_ruid(rqstp, stat->uid));
*p++ = htonl((u32) nfsd_rgid(rqstp, stat->gid));
*p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid));
*p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid));
if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) {
p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN);
} else {

63
fs/nfsd/nfs4acl.c
View File

@ -264,7 +264,7 @@ _posix_to_nfsv4_one(struct posix_acl *pacl, struct nfs4_acl *acl,
ace->flag = eflag;
ace->access_mask = deny_mask_from_posix(deny, flags);
ace->whotype = NFS4_ACL_WHO_NAMED;
ace->who = pa->e_id;
ace->who_uid = pa->e_uid;
ace++;
acl->naces++;
}
@ -273,7 +273,7 @@ _posix_to_nfsv4_one(struct posix_acl *pacl, struct nfs4_acl *acl,
ace->access_mask = mask_from_posix(pa->e_perm & pas.mask,
flags);
ace->whotype = NFS4_ACL_WHO_NAMED;
ace->who = pa->e_id;
ace->who_uid = pa->e_uid;
ace++;
acl->naces++;
pa++;
@ -300,7 +300,7 @@ _posix_to_nfsv4_one(struct posix_acl *pacl, struct nfs4_acl *acl,
ace->access_mask = mask_from_posix(pa->e_perm & pas.mask,
flags);
ace->whotype = NFS4_ACL_WHO_NAMED;
ace->who = pa->e_id;
ace->who_gid = pa->e_gid;
ace++;
acl->naces++;
pa++;
@ -329,7 +329,7 @@ _posix_to_nfsv4_one(struct posix_acl *pacl, struct nfs4_acl *acl,
ace->flag = eflag | NFS4_ACE_IDENTIFIER_GROUP;
ace->access_mask = deny_mask_from_posix(deny, flags);
ace->whotype = NFS4_ACL_WHO_NAMED;
ace->who = pa->e_id;
ace->who_gid = pa->e_gid;
ace++;
acl->naces++;
}
@ -345,6 +345,18 @@ _posix_to_nfsv4_one(struct posix_acl *pacl, struct nfs4_acl *acl,
acl->naces++;
}
static bool
pace_gt(struct posix_acl_entry *pace1, struct posix_acl_entry *pace2)
{
if (pace1->e_tag != pace2->e_tag)
return pace1->e_tag > pace2->e_tag;
if (pace1->e_tag == ACL_USER)
return uid_gt(pace1->e_uid, pace2->e_uid);
if (pace1->e_tag == ACL_GROUP)
return gid_gt(pace1->e_gid, pace2->e_gid);
return false;
}
static void
sort_pacl_range(struct posix_acl *pacl, int start, int end) {
int sorted = 0, i;
@ -355,8 +367,8 @@ sort_pacl_range(struct posix_acl *pacl, int start, int end) {
while (!sorted) {
sorted = 1;
for (i = start; i < end; i++) {
if (pacl->a_entries[i].e_id
> pacl->a_entries[i+1].e_id) {
if (pace_gt(&pacl->a_entries[i],
&pacl->a_entries[i+1])) {
sorted = 0;
tmp = pacl->a_entries[i];
pacl->a_entries[i] = pacl->a_entries[i+1];
@ -398,7 +410,10 @@ struct posix_ace_state {
};
struct posix_user_ace_state {
uid_t uid;
union {
kuid_t uid;
kgid_t gid;
};
struct posix_ace_state perms;
};
@ -521,7 +536,6 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags)
if (error)
goto out_err;
low_mode_from_nfs4(state->owner.allow, &pace->e_perm, flags);
pace->e_id = ACL_UNDEFINED_ID;
for (i=0; i < state->users->n; i++) {
pace++;
@ -531,7 +545,7 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags)
goto out_err;
low_mode_from_nfs4(state->users->aces[i].perms.allow,
&pace->e_perm, flags);
pace->e_id = state->users->aces[i].uid;
pace->e_uid = state->users->aces[i].uid;
add_to_mask(state, &state->users->aces[i].perms);
}
@ -541,7 +555,6 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags)
if (error)
goto out_err;
low_mode_from_nfs4(state->group.allow, &pace->e_perm, flags);
pace->e_id = ACL_UNDEFINED_ID;
add_to_mask(state, &state->group);
for (i=0; i < state->groups->n; i++) {
@ -552,14 +565,13 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags)
goto out_err;
low_mode_from_nfs4(state->groups->aces[i].perms.allow,
&pace->e_perm, flags);
pace->e_id = state->groups->aces[i].uid;
pace->e_gid = state->groups->aces[i].gid;
add_to_mask(state, &state->groups->aces[i].perms);
}
pace++;
pace->e_tag = ACL_MASK;
low_mode_from_nfs4(state->mask.allow, &pace->e_perm, flags);
pace->e_id = ACL_UNDEFINED_ID;
pace++;
pace->e_tag = ACL_OTHER;
@ -567,7 +579,6 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags)
if (error)
goto out_err;
low_mode_from_nfs4(state->other.allow, &pace->e_perm, flags);
pace->e_id = ACL_UNDEFINED_ID;
return pacl;
out_err:
@ -587,12 +598,13 @@ static inline void deny_bits(struct posix_ace_state *astate, u32 mask)
astate->deny |= mask & ~astate->allow;
}
static int find_uid(struct posix_acl_state *state, struct posix_ace_state_array *a, uid_t uid)
static int find_uid(struct posix_acl_state *state, kuid_t uid)
{
struct posix_ace_state_array *a = state->users;
int i;
for (i = 0; i < a->n; i++)
if (a->aces[i].uid == uid)
if (uid_eq(a->aces[i].uid, uid))
return i;
/* Not found: */
a->n++;
@ -603,6 +615,23 @@ static int find_uid(struct posix_acl_state *state, struct posix_ace_state_array
return i;
}
static int find_gid(struct posix_acl_state *state, kgid_t gid)
{
struct posix_ace_state_array *a = state->groups;
int i;
for (i = 0; i < a->n; i++)
if (gid_eq(a->aces[i].gid, gid))
return i;
/* Not found: */
a->n++;
a->aces[i].gid = gid;
a->aces[i].perms.allow = state->everyone.allow;
a->aces[i].perms.deny = state->everyone.deny;
return i;
}
static void deny_bits_array(struct posix_ace_state_array *a, u32 mask)
{
int i;
@ -636,7 +665,7 @@ static void process_one_v4_ace(struct posix_acl_state *state,
}
break;
case ACL_USER:
i = find_uid(state, state->users, ace->who);
i = find_uid(state, ace->who_uid);
if (ace->type == NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE) {
allow_bits(&state->users->aces[i].perms, mask);
} else {
@ -658,7 +687,7 @@ static void process_one_v4_ace(struct posix_acl_state *state,
}
break;
case ACL_GROUP:
i = find_uid(state, state->groups, ace->who);
i = find_gid(state, ace->who_gid);
if (ace->type == NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE) {
allow_bits(&state->groups->aces[i].perms, mask);
} else {

38
fs/nfsd/nfs4idmap.c
View File

@ -65,7 +65,7 @@ MODULE_PARM_DESC(nfs4_disable_idmapping,
struct ent {
struct cache_head h;
int type; /* User / Group */
uid_t id;
u32 id;
char name[IDMAP_NAMESZ];
char authname[IDMAP_NAMESZ];
};
@ -540,7 +540,7 @@ rqst_authname(struct svc_rqst *rqstp)
static __be32
idmap_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen,
uid_t *id)
u32 *id)
{
struct ent *item, key = {
.type = type,
@ -564,7 +564,7 @@ idmap_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen
}
static int
idmap_id_to_name(struct svc_rqst *rqstp, int type, uid_t id, char *name)
idmap_id_to_name(struct svc_rqst *rqstp, int type, u32 id, char *name)
{
struct ent *item, key = {
.id = id,
@ -587,7 +587,7 @@ idmap_id_to_name(struct svc_rqst *rqstp, int type, uid_t id, char *name)
}
static bool
numeric_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen, uid_t *id)
numeric_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen, u32 *id)
{
int ret;
char buf[11];
@ -603,7 +603,7 @@ numeric_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namel
}
static __be32
do_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen, uid_t *id)
do_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen, u32 *id)
{
if (nfs4_disable_idmapping && rqstp->rq_cred.cr_flavor < RPC_AUTH_GSS)
if (numeric_name_to_id(rqstp, type, name, namelen, id))
@ -616,7 +616,7 @@ do_name_to_id(struct svc_rqst *rqstp, int type, const char *name, u32 namelen, u
}
static int
do_id_to_name(struct svc_rqst *rqstp, int type, uid_t id, char *name)
do_id_to_name(struct svc_rqst *rqstp, int type, u32 id, char *name)
{
if (nfs4_disable_idmapping && rqstp->rq_cred.cr_flavor < RPC_AUTH_GSS)
return sprintf(name, "%u", id);
@ -625,26 +625,40 @@ do_id_to_name(struct svc_rqst *rqstp, int type, uid_t id, char *name)
__be32
nfsd_map_name_to_uid(struct svc_rqst *rqstp, const char *name, size_t namelen,
__u32 *id)
kuid_t *uid)
{
return do_name_to_id(rqstp, IDMAP_TYPE_USER, name, namelen, id);
__be32 status;
u32 id = -1;
status = do_name_to_id(rqstp, IDMAP_TYPE_USER, name, namelen, &id);
*uid = make_kuid(&init_user_ns, id);
if (!uid_valid(*uid))
status = nfserr_badowner;
return status;
}
__be32
nfsd_map_name_to_gid(struct svc_rqst *rqstp, const char *name, size_t namelen,
__u32 *id)
kgid_t *gid)
{
return do_name_to_id(rqstp, IDMAP_TYPE_GROUP, name, namelen, id);
__be32 status;
u32 id = -1;
status = do_name_to_id(rqstp, IDMAP_TYPE_GROUP, name, namelen, &id);
*gid = make_kgid(&init_user_ns, id);
if (!gid_valid(*gid))
status = nfserr_badowner;
return status;
}
int
nfsd_map_uid_to_name(struct svc_rqst *rqstp, __u32 id, char *name)
nfsd_map_uid_to_name(struct svc_rqst *rqstp, kuid_t uid, char *name)
{
u32 id = from_kuid(&init_user_ns, uid);
return do_id_to_name(rqstp, IDMAP_TYPE_USER, id, name);
}
int
nfsd_map_gid_to_name(struct svc_rqst *rqstp, __u32 id, char *name)
nfsd_map_gid_to_name(struct svc_rqst *rqstp, kgid_t gid, char *name)
{
u32 id = from_kgid(&init_user_ns, gid);
return do_id_to_name(rqstp, IDMAP_TYPE_GROUP, id, name);
}

4
fs/nfsd/nfs4recover.c
View File

@ -73,8 +73,8 @@ nfs4_save_creds(const struct cred **original_creds)
if (!new)
return -ENOMEM;
new->fsuid = 0;
new->fsgid = 0;
new->fsuid = GLOBAL_ROOT_UID;
new->fsgid = GLOBAL_ROOT_GID;
*original_creds = override_creds(new);
put_cred(new);
return 0;

6
fs/nfsd/nfs4state.c
View File

@ -1202,7 +1202,7 @@ static bool groups_equal(struct group_info *g1, struct group_info *g2)
if (g1->ngroups != g2->ngroups)
return false;
for (i=0; i<g1->ngroups; i++)
if (GROUP_AT(g1, i) != GROUP_AT(g2, i))
if (!gid_eq(GROUP_AT(g1, i), GROUP_AT(g2, i)))
return false;
return true;
}
@ -1227,8 +1227,8 @@ static bool
same_creds(struct svc_cred *cr1, struct svc_cred *cr2)
{
if ((is_gss_cred(cr1) != is_gss_cred(cr2))
|| (cr1->cr_uid != cr2->cr_uid)
|| (cr1->cr_gid != cr2->cr_gid)
|| (!uid_eq(cr1->cr_uid, cr2->cr_uid))
|| (!gid_eq(cr1->cr_gid, cr2->cr_gid))
|| !groups_equal(cr1->cr_group_info, cr2->cr_group_info))
return false;
if (cr1->cr_principal == cr2->cr_principal)

54
fs/nfsd/nfs4xdr.c
View File

@ -293,13 +293,13 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
ace->whotype = nfs4_acl_get_whotype(buf, dummy32);
status = nfs_ok;
if (ace->whotype != NFS4_ACL_WHO_NAMED)
ace->who = 0;
;
else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP)
status = nfsd_map_name_to_gid(argp->rqstp,
buf, dummy32, &ace->who);
buf, dummy32, &ace->who_gid);
else
status = nfsd_map_name_to_uid(argp->rqstp,
buf, dummy32, &ace->who);
buf, dummy32, &ace->who_uid);
if (status)
return status;
}
@ -464,9 +464,16 @@ static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_
READ32(dummy);
READ_BUF(dummy * 4);
if (cbs->flavor == (u32)(-1)) {
cbs->uid = uid;
cbs->gid = gid;
cbs->flavor = RPC_AUTH_UNIX;
kuid_t kuid = make_kuid(&init_user_ns, uid);
kgid_t kgid = make_kgid(&init_user_ns, gid);
if (uid_valid(kuid) && gid_valid(kgid)) {
cbs->uid = kuid;
cbs->gid = kgid;
cbs->flavor = RPC_AUTH_UNIX;
} else {
dprintk("RPC_AUTH_UNIX with invalid"
"uid or gid ignoring!\n");
}
}
break;
case RPC_AUTH_GSS:
@ -1926,7 +1933,7 @@ static u32 nfs4_file_type(umode_t mode)
}
static __be32
nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, kuid_t uid, kgid_t gid,
__be32 **p, int *buflen)
{
int status;
@ -1935,10 +1942,10 @@ nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
return nfserr_resource;
if (whotype != NFS4_ACL_WHO_NAMED)
status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1));
else if (group)
status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1));
else if (gid_valid(gid))
status = nfsd_map_gid_to_name(rqstp, gid, (u8 *)(*p + 1));
else
status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1));
status = nfsd_map_uid_to_name(rqstp, uid, (u8 *)(*p + 1));
if (status < 0)
return nfserrno(status);
*p = xdr_encode_opaque(*p, NULL, status);
@ -1948,22 +1955,33 @@ nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
}
static inline __be32
nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen)
nfsd4_encode_user(struct svc_rqst *rqstp, kuid_t user, __be32 **p, int *buflen)
{
return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen);
return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, user, INVALID_GID,
p, buflen);
}
static inline __be32
nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen)
nfsd4_encode_group(struct svc_rqst *rqstp, kgid_t group, __be32 **p, int *buflen)
{
return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen);
return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, INVALID_UID, group,
p, buflen);
}
static inline __be32
nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group,
nfsd4_encode_aclname(struct svc_rqst *rqstp, struct nfs4_ace *ace,
__be32 **p, int *buflen)
{
return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen);
kuid_t uid = INVALID_UID;
kgid_t gid = INVALID_GID;
if (ace->whotype == NFS4_ACL_WHO_NAMED) {
if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP)
gid = ace->who_gid;
else
uid = ace->who_uid;
}
return nfsd4_encode_name(rqstp, ace->whotype, uid, gid, p, buflen);
}
#define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \
@ -2224,9 +2242,7 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
WRITE32(ace->type);
WRITE32(ace->flag);
WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL);
status = nfsd4_encode_aclname(rqstp, ace->whotype,
ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP,
&p, &buflen);
status = nfsd4_encode_aclname(rqstp, ace, &p, &buflen);
if (status == nfserr_resource)
goto out_resource;
if (status)

14
fs/nfsd/nfsxdr.c
View File

@ -100,12 +100,14 @@ decode_sattr(__be32 *p, struct iattr *iap)
iap->ia_mode = tmp;
}
if ((tmp = ntohl(*p++)) != (u32)-1) {
iap->ia_valid |= ATTR_UID;
iap->ia_uid = tmp;
iap->ia_uid = make_kuid(&init_user_ns, tmp);
if (uid_valid(iap->ia_uid))
iap->ia_valid |= ATTR_UID;
}
if ((tmp = ntohl(*p++)) != (u32)-1) {
iap->ia_valid |= ATTR_GID;
iap->ia_gid = tmp;
iap->ia_gid = make_kgid(&init_user_ns, tmp);
if (gid_valid(iap->ia_gid))
iap->ia_valid |= ATTR_GID;
}
if ((tmp = ntohl(*p++)) != (u32)-1) {
iap->ia_valid |= ATTR_SIZE;
@ -151,8 +153,8 @@ encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
*p++ = htonl(nfs_ftypes[type >> 12]);
*p++ = htonl((u32) stat->mode);
*p++ = htonl((u32) stat->nlink);
*p++ = htonl((u32) nfsd_ruid(rqstp, stat->uid));
*p++ = htonl((u32) nfsd_rgid(rqstp, stat->gid));
*p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid));
*p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid));
if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN) {
*p++ = htonl(NFS_MAXPATHLEN);

4
fs/nfsd/state.h
View File

@ -152,8 +152,8 @@ struct nfsd4_channel_attrs {
struct nfsd4_cb_sec {
u32 flavor; /* (u32)(-1) used to mean "no valid flavor" */
u32 uid;
u32 gid;
kuid_t uid;
kgid_t gid;
};
struct nfsd4_create_session {

8
fs/nfsd/vfs.c
View File

@ -401,8 +401,8 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
/* Revoke setuid/setgid on chown */
if (!S_ISDIR(inode->i_mode) &&
(((iap->ia_valid & ATTR_UID) && iap->ia_uid != inode->i_uid) ||
((iap->ia_valid & ATTR_GID) && iap->ia_gid != inode->i_gid))) {
(((iap->ia_valid & ATTR_UID) && !uid_eq(iap->ia_uid, inode->i_uid)) ||
((iap->ia_valid & ATTR_GID) && !gid_eq(iap->ia_gid, inode->i_gid)))) {
iap->ia_valid |= ATTR_KILL_PRIV;
if (iap->ia_valid & ATTR_MODE) {
/* we're setting mode too, just clear the s*id bits */
@ -1205,7 +1205,7 @@ nfsd_create_setattr(struct svc_rqst *rqstp, struct svc_fh *resfhp,
* send along the gid on create when it tries to implement
* setgid directories via NFS:
*/
if (current_fsuid() != 0)
if (!uid_eq(current_fsuid(), GLOBAL_ROOT_UID))
iap->ia_valid &= ~(ATTR_UID|ATTR_GID);
if (iap->ia_valid)
return nfsd_setattr(rqstp, resfhp, iap, 0, (time_t)0);
@ -2150,7 +2150,7 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
* with NFSv3.
*/
if ((acc & NFSD_MAY_OWNER_OVERRIDE) &&
inode->i_uid == current_fsuid())
uid_eq(inode->i_uid, current_fsuid()))
return 0;
/* This assumes NFSD_MAY_{READ,WRITE,EXEC} == MAY_{READ,WRITE,EXEC} */

31
fs/ocfs2/acl.c
View File

@ -65,7 +65,20 @@ static struct posix_acl *ocfs2_acl_from_xattr(const void *value, size_t size)
acl->a_entries[n].e_tag = le16_to_cpu(entry->e_tag);
acl->a_entries[n].e_perm = le16_to_cpu(entry->e_perm);
acl->a_entries[n].e_id = le32_to_cpu(entry->e_id);
switch(acl->a_entries[n].e_tag) {
case ACL_USER:
acl->a_entries[n].e_uid =
make_kuid(&init_user_ns,
le32_to_cpu(entry->e_id));
break;
case ACL_GROUP:
acl->a_entries[n].e_gid =
make_kgid(&init_user_ns,
le32_to_cpu(entry->e_id));
break;
default:
break;
}
value += sizeof(struct posix_acl_entry);
}
@ -91,7 +104,21 @@ static void *ocfs2_acl_to_xattr(const struct posix_acl *acl, size_t *size)
for (n = 0; n < acl->a_count; n++, entry++) {
entry->e_tag = cpu_to_le16(acl->a_entries[n].e_tag);
entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm);
entry->e_id = cpu_to_le32(acl->a_entries[n].e_id);
switch(acl->a_entries[n].e_tag) {
case ACL_USER:
entry->e_id = cpu_to_le32(
from_kuid(&init_user_ns,
acl->a_entries[n].e_uid));
break;
case ACL_GROUP:
entry->e_id = cpu_to_le32(
from_kgid(&init_user_ns,
acl->a_entries[n].e_gid));
break;
default:
entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID);
break;
}
}
return ocfs2_acl;
}

8
fs/ocfs2/dlmglue.c
View File

@ -2045,8 +2045,8 @@ static void __ocfs2_stuff_meta_lvb(struct inode *inode)
lvb->lvb_version = OCFS2_LVB_VERSION;
lvb->lvb_isize = cpu_to_be64(i_size_read(inode));
lvb->lvb_iclusters = cpu_to_be32(oi->ip_clusters);
lvb->lvb_iuid = cpu_to_be32(inode->i_uid);
lvb->lvb_igid = cpu_to_be32(inode->i_gid);
lvb->lvb_iuid = cpu_to_be32(i_uid_read(inode));
lvb->lvb_igid = cpu_to_be32(i_gid_read(inode));
lvb->lvb_imode = cpu_to_be16(inode->i_mode);
lvb->lvb_inlink = cpu_to_be16(inode->i_nlink);
lvb->lvb_iatime_packed =
@ -2095,8 +2095,8 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
else
inode->i_blocks = ocfs2_inode_sector_count(inode);
inode->i_uid = be32_to_cpu(lvb->lvb_iuid);
inode->i_gid = be32_to_cpu(lvb->lvb_igid);
i_uid_write(inode, be32_to_cpu(lvb->lvb_iuid));
i_gid_write(inode, be32_to_cpu(lvb->lvb_igid));
inode->i_mode = be16_to_cpu(lvb->lvb_imode);
set_nlink(inode, be16_to_cpu(lvb->lvb_inlink));
ocfs2_unpack_timespec(&inode->i_atime,

11
fs/ocfs2/file.c
View File

@ -1116,7 +1116,8 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
(unsigned long long)OCFS2_I(inode)->ip_blkno,
dentry->d_name.len, dentry->d_name.name,
attr->ia_valid, attr->ia_mode,
attr->ia_uid, attr->ia_gid);
from_kuid(&init_user_ns, attr->ia_uid),
from_kgid(&init_user_ns, attr->ia_gid));
/* ensuring we don't even attempt to truncate a symlink */
if (S_ISLNK(inode->i_mode))
@ -1174,14 +1175,14 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
}
}
if ((attr->ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
(attr->ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
if ((attr->ia_valid & ATTR_UID && !uid_eq(attr->ia_uid, inode->i_uid)) ||
(attr->ia_valid & ATTR_GID && !gid_eq(attr->ia_gid, inode->i_gid))) {
/*
* Gather pointers to quota structures so that allocation /
* freeing of quota structures happens here and not inside
* dquot_transfer() where we have problems with lock ordering
*/
if (attr->ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid
if (attr->ia_valid & ATTR_UID && !uid_eq(attr->ia_uid, inode->i_uid)
&& OCFS2_HAS_RO_COMPAT_FEATURE(sb,
OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
transfer_to[USRQUOTA] = dqget(sb, make_kqid_uid(attr->ia_uid));
@ -1190,7 +1191,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
goto bail_unlock;
}
}
if (attr->ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid
if (attr->ia_valid & ATTR_GID && !gid_eq(attr->ia_gid, inode->i_gid)
&& OCFS2_HAS_RO_COMPAT_FEATURE(sb,
OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
transfer_to[GRPQUOTA] = dqget(sb, make_kqid_gid(attr->ia_gid));

12
fs/ocfs2/inode.c
View File

@ -269,8 +269,8 @@ void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
inode->i_generation = le32_to_cpu(fe->i_generation);
inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
inode->i_mode = le16_to_cpu(fe->i_mode);
inode->i_uid = le32_to_cpu(fe->i_uid);
inode->i_gid = le32_to_cpu(fe->i_gid);
i_uid_write(inode, le32_to_cpu(fe->i_uid));
i_gid_write(inode, le32_to_cpu(fe->i_gid));
/* Fast symlinks will have i_size but no allocated clusters. */
if (S_ISLNK(inode->i_mode) && !fe->i_clusters) {
@ -1259,8 +1259,8 @@ int ocfs2_mark_inode_dirty(handle_t *handle,
fe->i_size = cpu_to_le64(i_size_read(inode));
ocfs2_set_links_count(fe, inode->i_nlink);
fe->i_uid = cpu_to_le32(inode->i_uid);
fe->i_gid = cpu_to_le32(inode->i_gid);
fe->i_uid = cpu_to_le32(i_uid_read(inode));
fe->i_gid = cpu_to_le32(i_gid_read(inode));
fe->i_mode = cpu_to_le16(inode->i_mode);
fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
@ -1290,8 +1290,8 @@ void ocfs2_refresh_inode(struct inode *inode,
ocfs2_set_inode_flags(inode);
i_size_write(inode, le64_to_cpu(fe->i_size));
set_nlink(inode, ocfs2_read_links_count(fe));
inode->i_uid = le32_to_cpu(fe->i_uid);
inode->i_gid = le32_to_cpu(fe->i_gid);
i_uid_write(inode, le32_to_cpu(fe->i_uid));
i_gid_write(inode, le32_to_cpu(fe->i_gid));
inode->i_mode = le16_to_cpu(fe->i_mode);
if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0)
inode->i_blocks = 0;

4
fs/ocfs2/namei.c
View File

@ -512,8 +512,8 @@ static int __ocfs2_mknod_locked(struct inode *dir,
fe->i_suballoc_loc = cpu_to_le64(suballoc_loc);
fe->i_suballoc_bit = cpu_to_le16(suballoc_bit);
fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot);
fe->i_uid = cpu_to_le32(inode->i_uid);
fe->i_gid = cpu_to_le32(inode->i_gid);
fe->i_uid = cpu_to_le32(i_uid_read(inode));
fe->i_gid = cpu_to_le32(i_gid_read(inode));
fe->i_mode = cpu_to_le16(inode->i_mode);
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev));

2
fs/ocfs2/refcounttree.c
View File

@ -4407,7 +4407,7 @@ static int ocfs2_vfs_reflink(struct dentry *old_dentry, struct inode *dir,
* rights to do so.
*/
if (preserve) {
if ((current_fsuid() != inode->i_uid) && !capable(CAP_CHOWN))
if (!uid_eq(current_fsuid(), inode->i_uid) && !capable(CAP_CHOWN))
return -EPERM;
if (!in_group_p(inode->i_gid) && !capable(CAP_CHOWN))
return -EPERM;

1
fs/ramfs/inode.c
View File

@ -260,6 +260,7 @@ static struct file_system_type ramfs_fs_type = {
.name = "ramfs",
.mount = ramfs_mount,
.kill_sb = ramfs_kill_sb,
.fs_flags = FS_USERNS_MOUNT,
};
static struct file_system_type rootfs_fs_type = {
.name = "rootfs",

2
include/linux/coda_psdev.h
View File

@ -34,7 +34,7 @@ int venus_lookup(struct super_block *sb, struct CodaFid *fid,
const char *name, int length, int *type,
struct CodaFid *resfid);
int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
vuid_t uid);
kuid_t uid);
int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
struct file **f);
int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,

6
include/linux/nfs4.h
View File

@ -13,6 +13,7 @@
#define _LINUX_NFS4_H
#include <linux/list.h>
#include <linux/uidgid.h>
#include <uapi/linux/nfs4.h>
struct nfs4_ace {
@ -20,7 +21,10 @@ struct nfs4_ace {
uint32_t flag;
uint32_t access_mask;
int whotype;
uid_t who;
union {
kuid_t who_uid;
kgid_t who_gid;
};
};
struct nfs4_acl {

9
include/linux/nfs_idmap.h
View File

@ -36,6 +36,7 @@
#ifndef NFS_IDMAP_H
#define NFS_IDMAP_H
#include <linux/uidgid.h>
#include <uapi/linux/nfs_idmap.h>
@ -67,10 +68,10 @@ void nfs_fattr_init_names(struct nfs_fattr *fattr,
void nfs_fattr_free_names(struct nfs_fattr *);
void nfs_fattr_map_and_free_names(struct nfs_server *, struct nfs_fattr *);
int nfs_map_name_to_uid(const struct nfs_server *, const char *, size_t, __u32 *);
int nfs_map_group_to_gid(const struct nfs_server *, const char *, size_t, __u32 *);
int nfs_map_uid_to_name(const struct nfs_server *, __u32, char *, size_t);
int nfs_map_gid_to_group(const struct nfs_server *, __u32, char *, size_t);
int nfs_map_name_to_uid(const struct nfs_server *, const char *, size_t, kuid_t *);
int nfs_map_group_to_gid(const struct nfs_server *, const char *, size_t, kgid_t *);
int nfs_map_uid_to_name(const struct nfs_server *, kuid_t, char *, size_t);
int nfs_map_gid_to_group(const struct nfs_server *, kgid_t, char *, size_t);
extern unsigned int nfs_idmap_cache_timeout;
#endif /* NFS_IDMAP_H */

4
include/linux/nfs_xdr.h
View File

@ -48,8 +48,8 @@ struct nfs_fattr {
unsigned int valid; /* which fields are valid */
umode_t mode;
__u32 nlink;
__u32 uid;
__u32 gid;
kuid_t uid;
kgid_t gid;
dev_t rdev;
__u64 size;
union {

4
include/linux/nfsd/export.h
View File

@ -49,8 +49,8 @@ struct svc_export {
struct auth_domain * ex_client;
int ex_flags;
struct path ex_path;
uid_t ex_anon_uid;
gid_t ex_anon_gid;
kuid_t ex_anon_uid;
kgid_t ex_anon_gid;
int ex_fsid;
unsigned char * ex_uuid; /* 16 byte fsid */
struct nfsd4_fs_locations ex_fslocs;

7
include/linux/sunrpc/auth.h
View File

@ -17,14 +17,15 @@
#include <linux/atomic.h>
#include <linux/rcupdate.h>
#include <linux/uidgid.h>
/* size of the nodename buffer */
#define UNX_MAXNODENAME 32
/* Work around the lack of a VFS credential */
struct auth_cred {
uid_t uid;
gid_t gid;
kuid_t uid;
kgid_t gid;
struct group_info *group_info;
const char *principal;
unsigned char machine_cred : 1;
@ -48,7 +49,7 @@ struct rpc_cred {
unsigned long cr_flags; /* various flags */
atomic_t cr_count; /* ref count */
uid_t cr_uid;
kuid_t cr_uid;
/* per-flavor data */
};

4
include/linux/sunrpc/svcauth.h
View File

@ -18,8 +18,8 @@
#include <linux/cred.h>
struct svc_cred {
uid_t cr_uid;
gid_t cr_gid;
kuid_t cr_uid;
kgid_t cr_gid;
struct group_info *cr_group_info;
u32 cr_flavor; /* pseudoflavor */
char *cr_principal; /* for gss */

10
include/linux/user_namespace.h
View File

@ -21,7 +21,7 @@ struct user_namespace {
struct uid_gid_map uid_map;
struct uid_gid_map gid_map;
struct uid_gid_map projid_map;
struct kref kref;
atomic_t count;
struct user_namespace *parent;
kuid_t owner;
kgid_t group;
@ -35,18 +35,18 @@ extern struct user_namespace init_user_ns;
static inline struct user_namespace *get_user_ns(struct user_namespace *ns)
{
if (ns)
kref_get(&ns->kref);
atomic_inc(&ns->count);
return ns;
}
extern int create_user_ns(struct cred *new);
extern int unshare_userns(unsigned long unshare_flags, struct cred **new_cred);
extern void free_user_ns(struct kref *kref);
extern void free_user_ns(struct user_namespace *ns);
static inline void put_user_ns(struct user_namespace *ns)
{
if (ns)
kref_put(&ns->kref, free_user_ns);
if (ns && atomic_dec_and_test(&ns->count))
free_user_ns(ns);
}
struct seq_operations;

14
include/net/9p/9p.h
View File

@ -407,17 +407,17 @@ struct p9_wstat {
char *gid;
char *muid;
char *extension; /* 9p2000.u extensions */
u32 n_uid; /* 9p2000.u extensions */
u32 n_gid; /* 9p2000.u extensions */
u32 n_muid; /* 9p2000.u extensions */
kuid_t n_uid; /* 9p2000.u extensions */
kgid_t n_gid; /* 9p2000.u extensions */
kuid_t n_muid; /* 9p2000.u extensions */
};
struct p9_stat_dotl {
u64 st_result_mask;
struct p9_qid qid;
u32 st_mode;
u32 st_uid;
u32 st_gid;
kuid_t st_uid;
kgid_t st_gid;
u64 st_nlink;
u64 st_rdev;
u64 st_size;
@ -471,8 +471,8 @@ struct p9_stat_dotl {
struct p9_iattr_dotl {
u32 valid;
u32 mode;
u32 uid;
u32 gid;
kuid_t uid;
kgid_t gid;
u64 size;
u64 atime_sec;
u64 atime_nsec;

12
include/net/9p/client.h
View File

@ -187,7 +187,7 @@ struct p9_fid {
int mode;
struct p9_qid qid;
u32 iounit;
uid_t uid;
kuid_t uid;
void *rdir;
@ -220,17 +220,17 @@ void p9_client_destroy(struct p9_client *clnt);
void p9_client_disconnect(struct p9_client *clnt);
void p9_client_begin_disconnect(struct p9_client *clnt);
struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
char *uname, u32 n_uname, char *aname);
char *uname, kuid_t n_uname, char *aname);
struct p9_fid *p9_client_walk(struct p9_fid *oldfid, uint16_t nwname,
char **wnames, int clone);
int p9_client_open(struct p9_fid *fid, int mode);
int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,
char *extension);
int p9_client_link(struct p9_fid *fid, struct p9_fid *oldfid, char *newname);
int p9_client_symlink(struct p9_fid *fid, char *name, char *symname, gid_t gid,
int p9_client_symlink(struct p9_fid *fid, char *name, char *symname, kgid_t gid,
struct p9_qid *qid);
int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
gid_t gid, struct p9_qid *qid);
kgid_t gid, struct p9_qid *qid);
int p9_client_clunk(struct p9_fid *fid);
int p9_client_fsync(struct p9_fid *fid, int datasync);
int p9_client_remove(struct p9_fid *fid);
@ -250,9 +250,9 @@ struct p9_stat_dotl *p9_client_getattr_dotl(struct p9_fid *fid,
u64 request_mask);
int p9_client_mknod_dotl(struct p9_fid *oldfid, char *name, int mode,
dev_t rdev, gid_t gid, struct p9_qid *);
dev_t rdev, kgid_t gid, struct p9_qid *);
int p9_client_mkdir_dotl(struct p9_fid *fid, char *name, int mode,
gid_t gid, struct p9_qid *);
kgid_t gid, struct p9_qid *);
int p9_client_lock_dotl(struct p9_fid *fid, struct p9_flock *flock, u8 *status);
int p9_client_getlock_dotl(struct p9_fid *fid, struct p9_getlock *fl);
struct p9_req_t *p9_tag_lookup(struct p9_client *, u16);

20
init/Kconfig
View File

@ -1032,6 +1032,13 @@ config USER_NS
help
This allows containers, i.e. vservers, to use user namespaces
to provide different user info for different servers.
When user namespaces are enabled in the kernel it is
recommended that the MEMCG and MEMCG_KMEM options also be
enabled and that user-space use the memory control groups to
limit the amount of memory a memory unprivileged users can
use.
If unsure, say N.
config PID_NS
@ -1060,20 +1067,7 @@ config UIDGID_CONVERTED
bool
default y
# Networking
depends on NET_9P = n
# Filesystems
depends on 9P_FS = n
depends on AFS_FS = n
depends on CEPH_FS = n
depends on CIFS = n
depends on CODA_FS = n
depends on GFS2_FS = n
depends on NCP_FS = n
depends on NFSD = n
depends on NFS_FS = n
depends on OCFS2_FS = n
depends on XFS_FS = n
config UIDGID_STRICT_TYPE_CHECKS

1
ipc/mqueue.c
View File

@ -1383,6 +1383,7 @@ static struct file_system_type mqueue_fs_type = {
.name = "mqueue",
.mount = mqueue_mount,
.kill_sb = kill_litter_super,
.fs_flags = FS_USERNS_MOUNT,
};
int mq_init_ns(struct ipc_namespace *ns)

5
kernel/sys.c
View File

@ -434,11 +434,12 @@ static DEFINE_MUTEX(reboot_mutex);
SYSCALL_DEFINE4(reboot, int, magic1, int, magic2, unsigned int, cmd,
void __user *, arg)
{
struct pid_namespace *pid_ns = task_active_pid_ns(current);
char buffer[256];
int ret = 0;
/* We only trust the superuser with rebooting the system. */
if (!capable(CAP_SYS_BOOT))
if (!ns_capable(pid_ns->user_ns, CAP_SYS_BOOT))
return -EPERM;
/* For safety, we require "magic" arguments. */
@ -454,7 +455,7 @@ SYSCALL_DEFINE4(reboot, int, magic1, int, magic2, unsigned int, cmd,
* pid_namespace, the command is handled by reboot_pid_ns() which will
* call do_exit().
*/
ret = reboot_pid_ns(task_active_pid_ns(current), cmd);
ret = reboot_pid_ns(pid_ns, cmd);
if (ret)
return ret;

4
kernel/user.c
View File

@ -47,9 +47,7 @@ struct user_namespace init_user_ns = {
.count = 4294967295U,
},
},
.kref = {
.refcount = ATOMIC_INIT(3),
},
.count = ATOMIC_INIT(3),
.owner = GLOBAL_ROOT_UID,
.group = GLOBAL_ROOT_GID,
.proc_inum = PROC_USER_INIT_INO,

62
kernel/user_namespace.c
View File

@ -78,7 +78,7 @@ int create_user_ns(struct cred *new)
return ret;
}
kref_init(&ns->kref);
atomic_set(&ns->count, 1);
/* Leave the new->user_ns reference with the new user namespace. */
ns->parent = parent_ns;
ns->owner = owner;
@ -104,15 +104,16 @@ int unshare_userns(unsigned long unshare_flags, struct cred **new_cred)
return create_user_ns(cred);
}
void free_user_ns(struct kref *kref)
void free_user_ns(struct user_namespace *ns)
{
struct user_namespace *parent, *ns =
container_of(kref, struct user_namespace, kref);
struct user_namespace *parent;
parent = ns->parent;
proc_free_inum(ns->proc_inum);
kmem_cache_free(user_ns_cachep, ns);
put_user_ns(parent);
do {
parent = ns->parent;
proc_free_inum(ns->proc_inum);
kmem_cache_free(user_ns_cachep, ns);
ns = parent;
} while (atomic_dec_and_test(&parent->count));
}
EXPORT_SYMBOL(free_user_ns);
@ -519,6 +520,42 @@ struct seq_operations proc_projid_seq_operations = {
.show = projid_m_show,
};
static bool mappings_overlap(struct uid_gid_map *new_map, struct uid_gid_extent *extent)
{
u32 upper_first, lower_first, upper_last, lower_last;
unsigned idx;
upper_first = extent->first;
lower_first = extent->lower_first;
upper_last = upper_first + extent->count - 1;
lower_last = lower_first + extent->count - 1;
for (idx = 0; idx < new_map->nr_extents; idx++) {
u32 prev_upper_first, prev_lower_first;
u32 prev_upper_last, prev_lower_last;
struct uid_gid_extent *prev;
prev = &new_map->extent[idx];
prev_upper_first = prev->first;
prev_lower_first = prev->lower_first;
prev_upper_last = prev_upper_first + prev->count - 1;
prev_lower_last = prev_lower_first + prev->count - 1;
/* Does the upper range intersect a previous extent? */
if ((prev_upper_first <= upper_last) &&
(prev_upper_last >= upper_first))
return true;
/* Does the lower range intersect a previous extent? */
if ((prev_lower_first <= lower_last) &&
(prev_lower_last >= lower_first))
return true;
}
return false;
}
static DEFINE_MUTEX(id_map_mutex);
static ssize_t map_write(struct file *file, const char __user *buf,
@ -531,7 +568,7 @@ static ssize_t map_write(struct file *file, const char __user *buf,
struct user_namespace *ns = seq->private;
struct uid_gid_map new_map;
unsigned idx;
struct uid_gid_extent *extent, *last = NULL;
struct uid_gid_extent *extent = NULL;
unsigned long page = 0;
char *kbuf, *pos, *next_line;
ssize_t ret = -EINVAL;
@ -634,14 +671,11 @@ static ssize_t map_write(struct file *file, const char __user *buf,
if ((extent->lower_first + extent->count) <= extent->lower_first)
goto out;
/* For now only accept extents that are strictly in order */
if (last &&
(((last->first + last->count) > extent->first) ||
((last->lower_first + last->count) > extent->lower_first)))
/* Do the ranges in extent overlap any previous extents? */
if (mappings_overlap(&new_map, extent))
goto out;
new_map.nr_extents++;
last = extent;
/* Fail if the file contains too many extents */
if ((new_map.nr_extents == UID_GID_MAP_MAX_EXTENTS) &&

2
mm/shmem.c
View File

@ -2778,6 +2778,7 @@ static struct file_system_type shmem_fs_type = {
.name = "tmpfs",
.mount = shmem_mount,
.kill_sb = kill_litter_super,
.fs_flags = FS_USERNS_MOUNT,
};
int __init shmem_init(void)
@ -2835,6 +2836,7 @@ static struct file_system_type shmem_fs_type = {
.name = "tmpfs",
.mount = ramfs_mount,
.kill_sb = kill_litter_super,
.fs_flags = FS_USERNS_MOUNT,
};
int __init shmem_init(void)

43
net/9p/client.c
View File

@ -1100,7 +1100,7 @@ void p9_client_begin_disconnect(struct p9_client *clnt)
EXPORT_SYMBOL(p9_client_begin_disconnect);
struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
char *uname, u32 n_uname, char *aname)
char *uname, kuid_t n_uname, char *aname)
{
int err = 0;
struct p9_req_t *req;
@ -1117,7 +1117,7 @@ struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
goto error;
}
req = p9_client_rpc(clnt, P9_TATTACH, "ddss?d", fid->fid,
req = p9_client_rpc(clnt, P9_TATTACH, "ddss?u", fid->fid,
afid ? afid->fid : P9_NOFID, uname, aname, n_uname);
if (IS_ERR(req)) {
err = PTR_ERR(req);
@ -1270,7 +1270,7 @@ int p9_client_open(struct p9_fid *fid, int mode)
EXPORT_SYMBOL(p9_client_open);
int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
gid_t gid, struct p9_qid *qid)
kgid_t gid, struct p9_qid *qid)
{
int err = 0;
struct p9_client *clnt;
@ -1279,13 +1279,14 @@ int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
p9_debug(P9_DEBUG_9P,
">>> TLCREATE fid %d name %s flags %d mode %d gid %d\n",
ofid->fid, name, flags, mode, gid);
ofid->fid, name, flags, mode,
from_kgid(&init_user_ns, gid));
clnt = ofid->clnt;
if (ofid->mode != -1)
return -EINVAL;
req = p9_client_rpc(clnt, P9_TLCREATE, "dsddd", ofid->fid, name, flags,
req = p9_client_rpc(clnt, P9_TLCREATE, "dsddg", ofid->fid, name, flags,
mode, gid);
if (IS_ERR(req)) {
err = PTR_ERR(req);
@ -1358,7 +1359,7 @@ int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,
}
EXPORT_SYMBOL(p9_client_fcreate);
int p9_client_symlink(struct p9_fid *dfid, char *name, char *symtgt, gid_t gid,
int p9_client_symlink(struct p9_fid *dfid, char *name, char *symtgt, kgid_t gid,
struct p9_qid *qid)
{
int err = 0;
@ -1369,7 +1370,7 @@ int p9_client_symlink(struct p9_fid *dfid, char *name, char *symtgt, gid_t gid,
dfid->fid, name, symtgt);
clnt = dfid->clnt;
req = p9_client_rpc(clnt, P9_TSYMLINK, "dssd", dfid->fid, name, symtgt,
req = p9_client_rpc(clnt, P9_TSYMLINK, "dssg", dfid->fid, name, symtgt,
gid);
if (IS_ERR(req)) {
err = PTR_ERR(req);
@ -1710,7 +1711,9 @@ struct p9_wstat *p9_client_stat(struct p9_fid *fid)
(unsigned long long)ret->qid.path, ret->qid.version, ret->mode,
ret->atime, ret->mtime, (unsigned long long)ret->length,
ret->name, ret->uid, ret->gid, ret->muid, ret->extension,
ret->n_uid, ret->n_gid, ret->n_muid);
from_kuid(&init_user_ns, ret->n_uid),
from_kgid(&init_user_ns, ret->n_gid),
from_kuid(&init_user_ns, ret->n_muid));
p9_free_req(clnt, req);
return ret;
@ -1764,8 +1767,10 @@ struct p9_stat_dotl *p9_client_getattr_dotl(struct p9_fid *fid,
"<<< st_btime_sec=%lld st_btime_nsec=%lld\n"
"<<< st_gen=%lld st_data_version=%lld",
ret->st_result_mask, ret->qid.type, ret->qid.path,
ret->qid.version, ret->st_mode, ret->st_nlink, ret->st_uid,
ret->st_gid, ret->st_rdev, ret->st_size, ret->st_blksize,
ret->qid.version, ret->st_mode, ret->st_nlink,
from_kuid(&init_user_ns, ret->st_uid),
from_kgid(&init_user_ns, ret->st_gid),
ret->st_rdev, ret->st_size, ret->st_blksize,
ret->st_blocks, ret->st_atime_sec, ret->st_atime_nsec,
ret->st_mtime_sec, ret->st_mtime_nsec, ret->st_ctime_sec,
ret->st_ctime_nsec, ret->st_btime_sec, ret->st_btime_nsec,
@ -1828,7 +1833,9 @@ int p9_client_wstat(struct p9_fid *fid, struct p9_wstat *wst)
(unsigned long long)wst->qid.path, wst->qid.version, wst->mode,
wst->atime, wst->mtime, (unsigned long long)wst->length,
wst->name, wst->uid, wst->gid, wst->muid, wst->extension,
wst->n_uid, wst->n_gid, wst->n_muid);
from_kuid(&init_user_ns, wst->n_uid),
from_kgid(&init_user_ns, wst->n_gid),
from_kuid(&init_user_ns, wst->n_muid));
req = p9_client_rpc(clnt, P9_TWSTAT, "dwS", fid->fid, wst->size+2, wst);
if (IS_ERR(req)) {
@ -1857,7 +1864,9 @@ int p9_client_setattr(struct p9_fid *fid, struct p9_iattr_dotl *p9attr)
" valid=%x mode=%x uid=%d gid=%d size=%lld\n"
" atime_sec=%lld atime_nsec=%lld\n"
" mtime_sec=%lld mtime_nsec=%lld\n",
p9attr->valid, p9attr->mode, p9attr->uid, p9attr->gid,
p9attr->valid, p9attr->mode,
from_kuid(&init_user_ns, p9attr->uid),
from_kgid(&init_user_ns, p9attr->gid),
p9attr->size, p9attr->atime_sec, p9attr->atime_nsec,
p9attr->mtime_sec, p9attr->mtime_nsec);
@ -2106,7 +2115,7 @@ int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset)
EXPORT_SYMBOL(p9_client_readdir);
int p9_client_mknod_dotl(struct p9_fid *fid, char *name, int mode,
dev_t rdev, gid_t gid, struct p9_qid *qid)
dev_t rdev, kgid_t gid, struct p9_qid *qid)
{
int err;
struct p9_client *clnt;
@ -2116,7 +2125,7 @@ int p9_client_mknod_dotl(struct p9_fid *fid, char *name, int mode,
clnt = fid->clnt;
p9_debug(P9_DEBUG_9P, ">>> TMKNOD fid %d name %s mode %d major %d "
"minor %d\n", fid->fid, name, mode, MAJOR(rdev), MINOR(rdev));
req = p9_client_rpc(clnt, P9_TMKNOD, "dsdddd", fid->fid, name, mode,
req = p9_client_rpc(clnt, P9_TMKNOD, "dsdddg", fid->fid, name, mode,
MAJOR(rdev), MINOR(rdev), gid);
if (IS_ERR(req))
return PTR_ERR(req);
@ -2137,7 +2146,7 @@ int p9_client_mknod_dotl(struct p9_fid *fid, char *name, int mode,
EXPORT_SYMBOL(p9_client_mknod_dotl);
int p9_client_mkdir_dotl(struct p9_fid *fid, char *name, int mode,
gid_t gid, struct p9_qid *qid)
kgid_t gid, struct p9_qid *qid)
{
int err;
struct p9_client *clnt;
@ -2146,8 +2155,8 @@ int p9_client_mkdir_dotl(struct p9_fid *fid, char *name, int mode,
err = 0;
clnt = fid->clnt;
p9_debug(P9_DEBUG_9P, ">>> TMKDIR fid %d name %s mode %d gid %d\n",
fid->fid, name, mode, gid);
req = p9_client_rpc(clnt, P9_TMKDIR, "dsdd", fid->fid, name, mode,
fid->fid, name, mode, from_kgid(&init_user_ns, gid));
req = p9_client_rpc(clnt, P9_TMKDIR, "dsdg", fid->fid, name, mode,
gid);
if (IS_ERR(req))
return PTR_ERR(req);

49
net/9p/protocol.c
View File

@ -85,6 +85,8 @@ pdu_write_u(struct p9_fcall *pdu, const char __user *udata, size_t size)
d - int32_t
q - int64_t
s - string
u - numeric uid
g - numeric gid
S - stat
Q - qid
D - data blob (int32_t size followed by void *, results are not freed)
@ -163,6 +165,26 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt,
(*sptr)[len] = 0;
}
break;
case 'u': {
kuid_t *uid = va_arg(ap, kuid_t *);
__le32 le_val;
if (pdu_read(pdu, &le_val, sizeof(le_val))) {
errcode = -EFAULT;
break;
}
*uid = make_kuid(&init_user_ns,
le32_to_cpu(le_val));
} break;
case 'g': {
kgid_t *gid = va_arg(ap, kgid_t *);
__le32 le_val;
if (pdu_read(pdu, &le_val, sizeof(le_val))) {
errcode = -EFAULT;
break;
}
*gid = make_kgid(&init_user_ns,
le32_to_cpu(le_val));
} break;
case 'Q':{
struct p9_qid *qid =
va_arg(ap, struct p9_qid *);
@ -177,11 +199,12 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt,
va_arg(ap, struct p9_wstat *);
memset(stbuf, 0, sizeof(struct p9_wstat));
stbuf->n_uid = stbuf->n_gid = stbuf->n_muid =
-1;
stbuf->n_uid = stbuf->n_muid = INVALID_UID;
stbuf->n_gid = INVALID_GID;
errcode =
p9pdu_readf(pdu, proto_version,
"wwdQdddqssss?sddd",
"wwdQdddqssss?sugu",
&stbuf->size, &stbuf->type,
&stbuf->dev, &stbuf->qid,
&stbuf->mode, &stbuf->atime,
@ -294,7 +317,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt,
memset(stbuf, 0, sizeof(struct p9_stat_dotl));
errcode =
p9pdu_readf(pdu, proto_version,
"qQdddqqqqqqqqqqqqqqq",
"qQdugqqqqqqqqqqqqqqq",
&stbuf->st_result_mask,
&stbuf->qid,
&stbuf->st_mode,
@ -377,6 +400,20 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
errcode = -EFAULT;
}
break;
case 'u': {
kuid_t uid = va_arg(ap, kuid_t);
__le32 val = cpu_to_le32(
from_kuid(&init_user_ns, uid));
if (pdu_write(pdu, &val, sizeof(val)))
errcode = -EFAULT;
} break;
case 'g': {
kgid_t gid = va_arg(ap, kgid_t);
__le32 val = cpu_to_le32(
from_kgid(&init_user_ns, gid));
if (pdu_write(pdu, &val, sizeof(val)))
errcode = -EFAULT;
} break;
case 'Q':{
const struct p9_qid *qid =
va_arg(ap, const struct p9_qid *);
@ -390,7 +427,7 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
va_arg(ap, const struct p9_wstat *);
errcode =
p9pdu_writef(pdu, proto_version,
"wwdQdddqssss?sddd",
"wwdQdddqssss?sugu",
stbuf->size, stbuf->type,
stbuf->dev, &stbuf->qid,
stbuf->mode, stbuf->atime,
@ -468,7 +505,7 @@ p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt,
struct p9_iattr_dotl *);
errcode = p9pdu_writef(pdu, proto_version,
"ddddqqqqq",
"ddugqqqqq",
p9attr->valid,
p9attr->mode,
p9attr->uid,

5
net/ceph/ceph_common.c
View File

@ -15,6 +15,8 @@
#include <linux/slab.h>
#include <linux/statfs.h>
#include <linux/string.h>
#include <linux/nsproxy.h>
#include <net/net_namespace.h>
#include <linux/ceph/ceph_features.h>
@ -292,6 +294,9 @@ ceph_parse_options(char *options, const char *dev_name,
int err = -ENOMEM;
substring_t argstr[MAX_OPT_ARGS];
if (current->nsproxy->net_ns != &init_net)
return ERR_PTR(-EINVAL);
opt = kzalloc(sizeof(*opt), GFP_KERNEL);
if (!opt)
return ERR_PTR(-ENOMEM);

6
net/sunrpc/auth.c
View File

@ -412,7 +412,7 @@ rpcauth_lookup_credcache(struct rpc_auth *auth, struct auth_cred * acred,
*entry, *new;
unsigned int nr;
nr = hash_long(acred->uid, cache->hashbits);
nr = hash_long(from_kuid(&init_user_ns, acred->uid), cache->hashbits);
rcu_read_lock();
hlist_for_each_entry_rcu(entry, pos, &cache->hashtable[nr], cr_hash) {
@ -519,8 +519,8 @@ rpcauth_bind_root_cred(struct rpc_task *task, int lookupflags)
{
struct rpc_auth *auth = task->tk_client->cl_auth;
struct auth_cred acred = {
.uid = 0,
.gid = 0,
.uid = GLOBAL_ROOT_UID,
.gid = GLOBAL_ROOT_GID,
};
dprintk("RPC: %5u looking up %s cred\n",

16
net/sunrpc/auth_generic.c
View File

@ -18,8 +18,8 @@
# define RPCDBG_FACILITY RPCDBG_AUTH
#endif
#define RPC_MACHINE_CRED_USERID ((uid_t)0)
#define RPC_MACHINE_CRED_GROUPID ((gid_t)0)
#define RPC_MACHINE_CRED_USERID GLOBAL_ROOT_UID
#define RPC_MACHINE_CRED_GROUPID GLOBAL_ROOT_GID
struct generic_cred {
struct rpc_cred gc_base;
@ -96,7 +96,9 @@ generic_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
dprintk("RPC: allocated %s cred %p for uid %d gid %d\n",
gcred->acred.machine_cred ? "machine" : "generic",
gcred, acred->uid, acred->gid);
gcred,
from_kuid(&init_user_ns, acred->uid),
from_kgid(&init_user_ns, acred->gid));
return &gcred->gc_base;
}
@ -129,8 +131,8 @@ machine_cred_match(struct auth_cred *acred, struct generic_cred *gcred, int flag
{
if (!gcred->acred.machine_cred ||
gcred->acred.principal != acred->principal ||
gcred->acred.uid != acred->uid ||
gcred->acred.gid != acred->gid)
!uid_eq(gcred->acred.uid, acred->uid) ||
!gid_eq(gcred->acred.gid, acred->gid))
return 0;
return 1;
}
@ -147,8 +149,8 @@ generic_match(struct auth_cred *acred, struct rpc_cred *cred, int flags)
if (acred->machine_cred)
return machine_cred_match(acred, gcred, flags);
if (gcred->acred.uid != acred->uid ||
gcred->acred.gid != acred->gid ||
if (!uid_eq(gcred->acred.uid, acred->uid) ||
!gid_eq(gcred->acred.gid, acred->gid) ||
gcred->acred.machine_cred != 0)
goto out_nomatch;

45
net/sunrpc/auth_gss/auth_gss.c
View File

@ -255,7 +255,7 @@ gss_fill_context(const void *p, const void *end, struct gss_cl_ctx *ctx, struct
struct gss_upcall_msg {
atomic_t count;
uid_t uid;
kuid_t uid;
struct rpc_pipe_msg msg;
struct list_head list;
struct gss_auth *auth;
@ -302,11 +302,11 @@ gss_release_msg(struct gss_upcall_msg *gss_msg)
}
static struct gss_upcall_msg *
__gss_find_upcall(struct rpc_pipe *pipe, uid_t uid)
__gss_find_upcall(struct rpc_pipe *pipe, kuid_t uid)
{
struct gss_upcall_msg *pos;
list_for_each_entry(pos, &pipe->in_downcall, list) {
if (pos->uid != uid)
if (!uid_eq(pos->uid, uid))
continue;
atomic_inc(&pos->count);
dprintk("RPC: %s found msg %p\n", __func__, pos);
@ -394,8 +394,11 @@ gss_upcall_callback(struct rpc_task *task)
static void gss_encode_v0_msg(struct gss_upcall_msg *gss_msg)
{
gss_msg->msg.data = &gss_msg->uid;
gss_msg->msg.len = sizeof(gss_msg->uid);
uid_t uid = from_kuid(&init_user_ns, gss_msg->uid);
memcpy(gss_msg->databuf, &uid, sizeof(uid));
gss_msg->msg.data = gss_msg->databuf;
gss_msg->msg.len = sizeof(uid);
BUG_ON(sizeof(uid) > UPCALL_BUF_LEN);
}
static void gss_encode_v1_msg(struct gss_upcall_msg *gss_msg,
@ -408,7 +411,7 @@ static void gss_encode_v1_msg(struct gss_upcall_msg *gss_msg,
gss_msg->msg.len = sprintf(gss_msg->databuf, "mech=%s uid=%d ",
mech->gm_name,
gss_msg->uid);
from_kuid(&init_user_ns, gss_msg->uid));
p += gss_msg->msg.len;
if (clnt->cl_principal) {
len = sprintf(p, "target=%s ", clnt->cl_principal);
@ -444,7 +447,7 @@ static void gss_encode_msg(struct gss_upcall_msg *gss_msg,
static struct gss_upcall_msg *
gss_alloc_msg(struct gss_auth *gss_auth, struct rpc_clnt *clnt,
uid_t uid, const char *service_name)
kuid_t uid, const char *service_name)
{
struct gss_upcall_msg *gss_msg;
int vers;
@ -474,7 +477,7 @@ gss_setup_upcall(struct rpc_clnt *clnt, struct gss_auth *gss_auth, struct rpc_cr
struct gss_cred *gss_cred = container_of(cred,
struct gss_cred, gc_base);
struct gss_upcall_msg *gss_new, *gss_msg;
uid_t uid = cred->cr_uid;
kuid_t uid = cred->cr_uid;
gss_new = gss_alloc_msg(gss_auth, clnt, uid, gss_cred->gc_principal);
if (IS_ERR(gss_new))
@ -516,7 +519,7 @@ gss_refresh_upcall(struct rpc_task *task)
int err = 0;
dprintk("RPC: %5u %s for uid %u\n",
task->tk_pid, __func__, cred->cr_uid);
task->tk_pid, __func__, from_kuid(&init_user_ns, cred->cr_uid));
gss_msg = gss_setup_upcall(task->tk_client, gss_auth, cred);
if (PTR_ERR(gss_msg) == -EAGAIN) {
/* XXX: warning on the first, under the assumption we
@ -548,7 +551,8 @@ gss_refresh_upcall(struct rpc_task *task)
gss_release_msg(gss_msg);
out:
dprintk("RPC: %5u %s for uid %u result %d\n",
task->tk_pid, __func__, cred->cr_uid, err);
task->tk_pid, __func__,
from_kuid(&init_user_ns, cred->cr_uid), err);
return err;
}
@ -561,7 +565,8 @@ gss_create_upcall(struct gss_auth *gss_auth, struct gss_cred *gss_cred)
DEFINE_WAIT(wait);
int err = 0;
dprintk("RPC: %s for uid %u\n", __func__, cred->cr_uid);
dprintk("RPC: %s for uid %u\n",
__func__, from_kuid(&init_user_ns, cred->cr_uid));
retry:
gss_msg = gss_setup_upcall(gss_auth->client, gss_auth, cred);
if (PTR_ERR(gss_msg) == -EAGAIN) {
@ -603,7 +608,7 @@ gss_create_upcall(struct gss_auth *gss_auth, struct gss_cred *gss_cred)
gss_release_msg(gss_msg);
out:
dprintk("RPC: %s for uid %u result %d\n",
__func__, cred->cr_uid, err);
__func__, from_kuid(&init_user_ns, cred->cr_uid), err);
return err;
}
@ -617,7 +622,8 @@ gss_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
struct gss_upcall_msg *gss_msg;
struct rpc_pipe *pipe = RPC_I(filp->f_dentry->d_inode)->pipe;
struct gss_cl_ctx *ctx;
uid_t uid;
uid_t id;
kuid_t uid;
ssize_t err = -EFBIG;
if (mlen > MSG_BUF_MAXSIZE)
@ -632,12 +638,18 @@ gss_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
goto err;
end = (const void *)((char *)buf + mlen);
p = simple_get_bytes(buf, end, &uid, sizeof(uid));
p = simple_get_bytes(buf, end, &id, sizeof(id));
if (IS_ERR(p)) {
err = PTR_ERR(p);
goto err;
}
uid = make_kuid(&init_user_ns, id);
if (!uid_valid(uid)) {
err = -EINVAL;
goto err;
}
err = -ENOMEM;
ctx = gss_alloc_context();
if (ctx == NULL)
@ -1058,7 +1070,8 @@ gss_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
int err = -ENOMEM;
dprintk("RPC: %s for uid %d, flavor %d\n",
__func__, acred->uid, auth->au_flavor);
__func__, from_kuid(&init_user_ns, acred->uid),
auth->au_flavor);
if (!(cred = kzalloc(sizeof(*cred), GFP_NOFS)))
goto out_err;
@ -1114,7 +1127,7 @@ gss_match(struct auth_cred *acred, struct rpc_cred *rc, int flags)
}
if (gss_cred->gc_principal != NULL)
return 0;
return rc->cr_uid == acred->uid;
return uid_eq(rc->cr_uid, acred->uid);
}
/*

18
net/sunrpc/auth_gss/svcauth_gss.c
View File

@ -418,6 +418,7 @@ static int rsc_parse(struct cache_detail *cd,
{
/* contexthandle expiry [ uid gid N <n gids> mechname ...mechdata... ] */
char *buf = mesg;
int id;
int len, rv;
struct rsc rsci, *rscp = NULL;
time_t expiry;
@ -444,7 +445,7 @@ static int rsc_parse(struct cache_detail *cd,
goto out;
/* uid, or NEGATIVE */
rv = get_int(&mesg, &rsci.cred.cr_uid);
rv = get_int(&mesg, &id);
if (rv == -EINVAL)
goto out;
if (rv == -ENOENT)
@ -452,8 +453,16 @@ static int rsc_parse(struct cache_detail *cd,
else {
int N, i;
/* uid */
rsci.cred.cr_uid = make_kuid(&init_user_ns, id);
if (!uid_valid(rsci.cred.cr_uid))
goto out;
/* gid */
if (get_int(&mesg, &rsci.cred.cr_gid))
if (get_int(&mesg, &id))
goto out;
rsci.cred.cr_gid = make_kgid(&init_user_ns, id);
if (!gid_valid(rsci.cred.cr_gid))
goto out;
/* number of additional gid's */
@ -467,11 +476,10 @@ static int rsc_parse(struct cache_detail *cd,
/* gid's */
status = -EINVAL;
for (i=0; i<N; i++) {
gid_t gid;
kgid_t kgid;
if (get_int(&mesg, &gid))
if (get_int(&mesg, &id))
goto out;
kgid = make_kgid(&init_user_ns, gid);
kgid = make_kgid(&init_user_ns, id);
if (!gid_valid(kgid))
goto out;
GROUP_AT(rsci.cred.cr_group_info, i) = kgid;

36
net/sunrpc/auth_unix.c
View File

@ -18,8 +18,8 @@
struct unx_cred {
struct rpc_cred uc_base;
gid_t uc_gid;
gid_t uc_gids[NFS_NGROUPS];
kgid_t uc_gid;
kgid_t uc_gids[NFS_NGROUPS];
};
#define uc_uid uc_base.cr_uid
@ -65,7 +65,8 @@ unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
unsigned int i;
dprintk("RPC: allocating UNIX cred for uid %d gid %d\n",
acred->uid, acred->gid);
from_kuid(&init_user_ns, acred->uid),
from_kgid(&init_user_ns, acred->gid));
if (!(cred = kmalloc(sizeof(*cred), GFP_NOFS)))
return ERR_PTR(-ENOMEM);
@ -79,13 +80,10 @@ unx_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags)
groups = NFS_NGROUPS;
cred->uc_gid = acred->gid;
for (i = 0; i < groups; i++) {
gid_t gid;
gid = from_kgid(&init_user_ns, GROUP_AT(acred->group_info, i));
cred->uc_gids[i] = gid;
}
for (i = 0; i < groups; i++)
cred->uc_gids[i] = GROUP_AT(acred->group_info, i);
if (i < NFS_NGROUPS)
cred->uc_gids[i] = NOGROUP;
cred->uc_gids[i] = INVALID_GID;
return &cred->uc_base;
}
@ -123,21 +121,17 @@ unx_match(struct auth_cred *acred, struct rpc_cred *rcred, int flags)
unsigned int i;
if (cred->uc_uid != acred->uid || cred->uc_gid != acred->gid)
if (!uid_eq(cred->uc_uid, acred->uid) || !gid_eq(cred->uc_gid, acred->gid))
return 0;
if (acred->group_info != NULL)
groups = acred->group_info->ngroups;
if (groups > NFS_NGROUPS)
groups = NFS_NGROUPS;
for (i = 0; i < groups ; i++) {
gid_t gid;
gid = from_kgid(&init_user_ns, GROUP_AT(acred->group_info, i));
if (cred->uc_gids[i] != gid)
for (i = 0; i < groups ; i++)
if (!gid_eq(cred->uc_gids[i], GROUP_AT(acred->group_info, i)))
return 0;
}
if (groups < NFS_NGROUPS &&
cred->uc_gids[groups] != NOGROUP)
if (groups < NFS_NGROUPS && gid_valid(cred->uc_gids[groups]))
return 0;
return 1;
}
@ -163,11 +157,11 @@ unx_marshal(struct rpc_task *task, __be32 *p)
*/
p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen);
*p++ = htonl((u32) cred->uc_uid);
*p++ = htonl((u32) cred->uc_gid);
*p++ = htonl((u32) from_kuid(&init_user_ns, cred->uc_uid));
*p++ = htonl((u32) from_kgid(&init_user_ns, cred->uc_gid));
hold = p++;
for (i = 0; i < 16 && cred->uc_gids[i] != (gid_t) NOGROUP; i++)
*p++ = htonl((u32) cred->uc_gids[i]);
for (i = 0; i < 16 && gid_valid(cred->uc_gids[i]); i++)
*p++ = htonl((u32) from_kgid(&init_user_ns, cred->uc_gids[i]));
*hold = htonl(p - hold - 1); /* gid array length */
*base = htonl((p - base - 1) << 2); /* cred length */

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