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Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

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* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] fix posix open regression
This commit is contained in:
Linus Torvalds 2009-05-22 07:38:28 -07:00
commit a15ae93ff7
2 changed files with 44 additions and 36 deletions
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14
fs/cifs/dir.c
View file

@ -225,6 +225,7 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
if (!(oflags & FMODE_READ))
write_only = true;
mode &= ~current_umask();
rc = CIFSPOSIXCreate(xid, cifs_sb->tcon, posix_flags, mode,
pnetfid, presp_data, &oplock, full_path,
cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
@ -310,7 +311,6 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
return -ENOMEM;
}
mode &= ~current_umask();
if (oplockEnabled)
oplock = REQ_OPLOCK;
@ -336,7 +336,7 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
else /* success, no need to query */
goto cifs_create_set_dentry;
} else if ((rc != -EIO) && (rc != -EREMOTE) &&
(rc != -EOPNOTSUPP)) /* path not found or net err */
(rc != -EOPNOTSUPP) && (rc != -EINVAL))
goto cifs_create_out;
/* else fallthrough to retry, using older open call, this is
case where server does not support this SMB level, and
@ -609,7 +609,6 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
int xid;
int rc = 0; /* to get around spurious gcc warning, set to zero here */
int oplock = 0;
int mode;
__u16 fileHandle = 0;
bool posix_open = false;
struct cifs_sb_info *cifs_sb;
@ -660,13 +659,12 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
if (pTcon->unix_ext) {
if (!(nd->flags & (LOOKUP_PARENT | LOOKUP_DIRECTORY)) &&
(nd->flags & LOOKUP_OPEN)) {
(nd->flags & LOOKUP_OPEN) && !pTcon->broken_posix_open) {
if (!((nd->intent.open.flags & O_CREAT) &&
(nd->intent.open.flags & O_EXCL))) {
mode = nd->intent.open.create_mode &
~current_umask();
rc = cifs_posix_open(full_path, &newInode,
parent_dir_inode->i_sb, mode,
parent_dir_inode->i_sb,
nd->intent.open.create_mode,
nd->intent.open.flags, &oplock,
&fileHandle, xid);
/*
@ -681,6 +679,8 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
*/
if ((rc != -EINVAL) && (rc != -EOPNOTSUPP))
posix_open = true;
else
pTcon->broken_posix_open = true;
}
}
if (!posix_open)

66
fs/cifs/file.c
View file

@ -130,10 +130,6 @@ static inline int cifs_posix_open_inode_helper(struct inode *inode,
struct cifsFileInfo *pCifsFile, int oplock, u16 netfid)
{
file->private_data = kmalloc(sizeof(struct cifsFileInfo), GFP_KERNEL);
if (file->private_data == NULL)
return -ENOMEM;
pCifsFile = cifs_init_private(file->private_data, inode, file, netfid);
write_lock(&GlobalSMBSeslock);
pCifsInode = CIFS_I(file->f_path.dentry->d_inode);
@ -184,6 +180,38 @@ psx_client_can_cache:
return 0;
}
static struct cifsFileInfo *
cifs_fill_filedata(struct file *file)
{
struct list_head *tmp;
struct cifsFileInfo *pCifsFile = NULL;
struct cifsInodeInfo *pCifsInode = NULL;
/* search inode for this file and fill in file->private_data */
pCifsInode = CIFS_I(file->f_path.dentry->d_inode);
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &pCifsInode->openFileList) {
pCifsFile = list_entry(tmp, struct cifsFileInfo, flist);
if ((pCifsFile->pfile == NULL) &&
(pCifsFile->pid == current->tgid)) {
/* mode set in cifs_create */
/* needed for writepage */
pCifsFile->pfile = file;
file->private_data = pCifsFile;
break;
}
}
read_unlock(&GlobalSMBSeslock);
if (file->private_data != NULL) {
return pCifsFile;
} else if ((file->f_flags & O_CREAT) && (file->f_flags & O_EXCL))
cERROR(1, ("could not find file instance for "
"new file %p", file));
return NULL;
}
/* all arguments to this function must be checked for validity in caller */
static inline int cifs_open_inode_helper(struct inode *inode, struct file *file,
struct cifsInodeInfo *pCifsInode, struct cifsFileInfo *pCifsFile,
@ -258,7 +286,6 @@ int cifs_open(struct inode *inode, struct file *file)
struct cifsTconInfo *tcon;
struct cifsFileInfo *pCifsFile;
struct cifsInodeInfo *pCifsInode;
struct list_head *tmp;
char *full_path = NULL;
int desiredAccess;
int disposition;
@ -270,32 +297,12 @@ int cifs_open(struct inode *inode, struct file *file)
cifs_sb = CIFS_SB(inode->i_sb);
tcon = cifs_sb->tcon;
/* search inode for this file and fill in file->private_data */
pCifsInode = CIFS_I(file->f_path.dentry->d_inode);
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &pCifsInode->openFileList) {
pCifsFile = list_entry(tmp, struct cifsFileInfo,
flist);
if ((pCifsFile->pfile == NULL) &&
(pCifsFile->pid == current->tgid)) {
/* mode set in cifs_create */
/* needed for writepage */
pCifsFile->pfile = file;
file->private_data = pCifsFile;
break;
}
}
read_unlock(&GlobalSMBSeslock);
if (file->private_data != NULL) {
rc = 0;
pCifsFile = cifs_fill_filedata(file);
if (pCifsFile) {
FreeXid(xid);
return rc;
} else if ((file->f_flags & O_CREAT) && (file->f_flags & O_EXCL))
cERROR(1, ("could not find file instance for "
"new file %p", file));
return 0;
}
full_path = build_path_from_dentry(file->f_path.dentry);
if (full_path == NULL) {
@ -325,6 +332,7 @@ int cifs_open(struct inode *inode, struct file *file)
/* no need for special case handling of setting mode
on read only files needed here */
pCifsFile = cifs_fill_filedata(file);
cifs_posix_open_inode_helper(inode, file, pCifsInode,
pCifsFile, oplock, netfid);
goto out;