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CIFS: Move unlink code to ops struct 

Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Pavel Shilovsky 2012-09-18 16:20:25 -07:00 committed by Steve French
parent 56d27adcb5
commit ed6875e0d6
5 changed files with 44 additions and 22 deletions
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6
fs/cifs/cifsglob.h
View File

@ -256,6 +256,12 @@ struct smb_version_operations {
/* remove directory */
int (*rmdir)(const unsigned int, struct cifs_tcon *, const char *,
struct cifs_sb_info *);
/* unlink file */
int (*unlink)(const unsigned int, struct cifs_tcon *, const char *,
struct cifs_sb_info *);
/* open, rename and delete file */
int (*rename_pending_delete)(const char *, struct dentry *,
const unsigned int);
};
struct smb_version_values {

9
fs/cifs/cifsproto.h
View File

@ -144,6 +144,11 @@ extern int cifs_get_file_info_unix(struct file *filp);
extern int cifs_get_inode_info_unix(struct inode **pinode,
const unsigned char *search_path,
struct super_block *sb, unsigned int xid);
extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs,
unsigned int xid, char *full_path, __u32 dosattr);
extern int cifs_rename_pending_delete(const char *full_path,
struct dentry *dentry,
const unsigned int xid);
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);
@ -303,9 +308,7 @@ extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
const struct nls_table *nls_codepage,
int remap_special_chars);
extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
const char *name,
const struct nls_table *nls_codepage,
int remap_special_chars);
const char *name, struct cifs_sb_info *cifs_sb);
extern int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
const char *fromName, const char *toName,
const struct nls_table *nls_codepage,

16
fs/cifs/cifssmb.c
View File

@ -902,15 +902,15 @@ CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
}
int
CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
const char *fileName, const struct nls_table *nls_codepage,
int remap)
CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
struct cifs_sb_info *cifs_sb)
{
DELETE_FILE_REQ *pSMB = NULL;
DELETE_FILE_RSP *pSMBr = NULL;
int rc = 0;
int bytes_returned;
int name_len;
int remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR;
DelFileRetry:
rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB,
@ -919,15 +919,15 @@ CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon,
return rc;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
cifsConvertToUTF16((__le16 *) pSMB->fileName, fileName,
PATH_MAX, nls_codepage, remap);
name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name,
PATH_MAX, cifs_sb->local_nls,
remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve check for buffer overruns BB */
name_len = strnlen(fileName, PATH_MAX);
name_len = strnlen(name, PATH_MAX);
name_len++; /* trailing null */
strncpy(pSMB->fileName, fileName, name_len);
strncpy(pSMB->fileName, name, name_len);
}
pSMB->SearchAttributes =
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);

33
fs/cifs/inode.c
View File

@ -876,9 +876,9 @@ struct inode *cifs_root_iget(struct super_block *sb)
return inode;
}
static int
int
cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
char *full_path, __u32 dosattr)
char *full_path, __u32 dosattr)
{
int rc;
int oplock = 0;
@ -993,13 +993,13 @@ cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
}
/*
* open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
* Open the given file (if it isn't already), set the DELETE_ON_CLOSE bit
* and rename it to a random name that hopefully won't conflict with
* anything else.
*/
static int
cifs_rename_pending_delete(char *full_path, struct dentry *dentry,
unsigned int xid)
int
cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
const unsigned int xid)
{
int oplock = 0;
int rc;
@ -1136,6 +1136,7 @@ int cifs_unlink(struct inode *dir, struct dentry *dentry)
struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
struct tcon_link *tlink;
struct cifs_tcon *tcon;
struct TCP_Server_Info *server;
struct iattr *attrs = NULL;
__u32 dosattr = 0, origattr = 0;
@ -1145,6 +1146,7 @@ int cifs_unlink(struct inode *dir, struct dentry *dentry)
if (IS_ERR(tlink))
return PTR_ERR(tlink);
tcon = tlink_tcon(tlink);
server = tcon->ses->server;
xid = get_xid();
@ -1167,8 +1169,12 @@ int cifs_unlink(struct inode *dir, struct dentry *dentry)
}
retry_std_delete:
rc = CIFSSMBDelFile(xid, tcon, full_path, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (!server->ops->unlink) {
rc = -ENOSYS;
goto psx_del_no_retry;
}
rc = server->ops->unlink(xid, tcon, full_path, cifs_sb);
psx_del_no_retry:
if (!rc) {
@ -1177,9 +1183,14 @@ int cifs_unlink(struct inode *dir, struct dentry *dentry)
} else if (rc == -ENOENT) {
d_drop(dentry);
} else if (rc == -ETXTBSY) {
rc = cifs_rename_pending_delete(full_path, dentry, xid);
if (rc == 0)
cifs_drop_nlink(inode);
if (server->ops->rename_pending_delete) {
rc = server->ops->rename_pending_delete(full_path,
dentry, xid);
if (rc == 0)
cifs_drop_nlink(inode);
}
if (rc == -ETXTBSY)
rc = -EBUSY;
} else if ((rc == -EACCES) && (dosattr == 0) && inode) {
attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
if (attrs == NULL) {

2
fs/cifs/smb1ops.c
View File

@ -644,6 +644,8 @@ struct smb_version_operations smb1_operations = {
.mkdir = CIFSSMBMkDir,
.mkdir_setinfo = cifs_mkdir_setinfo,
.rmdir = CIFSSMBRmDir,
.unlink = CIFSSMBDelFile,
.rename_pending_delete = cifs_rename_pending_delete,
};
struct smb_version_values smb1_values = {