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userns: Convert affs to use kuid/kgid wherwe appropriate 

Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2012-02-07 16:20:16 -08:00
parent f31389d508
commit 8fed10be00
4 changed files with 23 additions and 20 deletions
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4
fs/affs/affs.h
View File

@ -88,8 +88,8 @@ struct affs_sb_info {
u32 s_root_block; /* FFS root block number. */
int s_hashsize; /* Size of hash table. */
unsigned long s_flags; /* See below. */
uid_t s_uid; /* uid to override */
gid_t s_gid; /* gid to override */
kuid_t s_uid; /* uid to override */
kgid_t s_gid; /* gid to override */
umode_t s_mode; /* mode to override */
struct buffer_head *s_root_bh; /* Cached root block. */
struct mutex s_bmlock; /* Protects bitmap access. */

20
fs/affs/inode.c
View File

@ -80,17 +80,17 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino)
if (id == 0 || sbi->s_flags & SF_SETUID)
inode->i_uid = sbi->s_uid;
else if (id == 0xFFFF && sbi->s_flags & SF_MUFS)
inode->i_uid = 0;
i_uid_write(inode, 0);
else
inode->i_uid = id;
i_uid_write(inode, id);
id = be16_to_cpu(tail->gid);
if (id == 0 || sbi->s_flags & SF_SETGID)
inode->i_gid = sbi->s_gid;
else if (id == 0xFFFF && sbi->s_flags & SF_MUFS)
inode->i_gid = 0;
i_gid_write(inode, 0);
else
inode->i_gid = id;
i_gid_write(inode, id);
switch (be32_to_cpu(tail->stype)) {
case ST_ROOT:
@ -193,13 +193,13 @@ affs_write_inode(struct inode *inode, struct writeback_control *wbc)
tail->size = cpu_to_be32(inode->i_size);
secs_to_datestamp(inode->i_mtime.tv_sec,&tail->change);
if (!(inode->i_ino == AFFS_SB(sb)->s_root_block)) {
uid = inode->i_uid;
gid = inode->i_gid;
uid = i_uid_read(inode);
gid = i_gid_read(inode);
if (AFFS_SB(sb)->s_flags & SF_MUFS) {
if (inode->i_uid == 0 || inode->i_uid == 0xFFFF)
uid = inode->i_uid ^ ~0;
if (inode->i_gid == 0 || inode->i_gid == 0xFFFF)
gid = inode->i_gid ^ ~0;
if (uid == 0 || uid == 0xFFFF)
uid = uid ^ ~0;
if (gid == 0 || gid == 0xFFFF)
gid = gid ^ ~0;
}
if (!(AFFS_SB(sb)->s_flags & SF_SETUID))
tail->uid = cpu_to_be16(uid);

18
fs/affs/super.c
View File

@ -188,7 +188,7 @@ static const match_table_t tokens = {
};
static int
parse_options(char *options, uid_t *uid, gid_t *gid, int *mode, int *reserved, s32 *root,
parse_options(char *options, kuid_t *uid, kgid_t *gid, int *mode, int *reserved, s32 *root,
int *blocksize, char **prefix, char *volume, unsigned long *mount_opts)
{
char *p;
@ -253,13 +253,17 @@ parse_options(char *options, uid_t *uid, gid_t *gid, int *mode, int *reserved, s
case Opt_setgid:
if (match_int(&args[0], &option))
return 0;
*gid = option;
*gid = make_kgid(current_user_ns(), option);
if (!gid_valid(*gid))
return 0;
*mount_opts |= SF_SETGID;
break;
case Opt_setuid:
if (match_int(&args[0], &option))
return 0;
*uid = option;
*uid = make_kuid(current_user_ns(), option);
if (!uid_valid(*uid))
return 0;
*mount_opts |= SF_SETUID;
break;
case Opt_verbose:
@ -301,8 +305,8 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
int num_bm;
int i, j;
s32 key;
uid_t uid;
gid_t gid;
kuid_t uid;
kgid_t gid;
int reserved;
unsigned long mount_flags;
int tmp_flags; /* fix remount prototype... */
@ -527,8 +531,8 @@ affs_remount(struct super_block *sb, int *flags, char *data)
{
struct affs_sb_info *sbi = AFFS_SB(sb);
int blocksize;
uid_t uid;
gid_t gid;
kuid_t uid;
kgid_t gid;
int mode;
int reserved;
int root_block;

1
init/Kconfig
View File

@ -928,7 +928,6 @@ config UIDGID_CONVERTED
# Filesystems
depends on 9P_FS = n
depends on AFFS_FS = n
depends on AFS_FS = n
depends on AUTOFS4_FS = n
depends on BFS_FS = n