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Merge git://git.samba.org/sfrench/cifs-2.6 

Pull CIFS fixes from Steve French

* git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix dentry refcount leak when opening a FIFO on lookup
  CIFS: Fix mkdir/rmdir bug for the non-POSIX case
This commit is contained in:
Linus Torvalds 2012-03-06 16:55:50 -08:00
parent 83cd904d27 5bccda0ebc
commit 71fece9511
2 changed files with 37 additions and 11 deletions
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20
fs/cifs/dir.c
View File

@ -584,10 +584,26 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
* If either that or op not supported returned, follow
* the normal lookup.
*/
if ((rc == 0) || (rc == -ENOENT))
switch (rc) {
case 0:
/*
* The server may allow us to open things like
* FIFOs, but the client isn't set up to deal
* with that. If it's not a regular file, just
* close it and proceed as if it were a normal
* lookup.
*/
if (newInode && !S_ISREG(newInode->i_mode)) {
CIFSSMBClose(xid, pTcon, fileHandle);
break;
}
case -ENOENT:
posix_open = true;
else if ((rc == -EINVAL) || (rc != -EOPNOTSUPP))
case -EOPNOTSUPP:
break;
default:
pTcon->broken_posix_open = true;
}
}
if (!posix_open)
rc = cifs_get_inode_info_unix(&newInode, full_path,

28
fs/cifs/inode.c
View File

@ -534,6 +534,11 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode;
fattr->cf_dtype = DT_DIR;
/*
* Server can return wrong NumberOfLinks value for directories
* when Unix extensions are disabled - fake it.
*/
fattr->cf_nlink = 2;
} else {
fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode;
fattr->cf_dtype = DT_REG;
@ -541,9 +546,9 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
/* clear write bits if ATTR_READONLY is set */
if (fattr->cf_cifsattrs & ATTR_READONLY)
fattr->cf_mode &= ~(S_IWUGO);
}
fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks);
}
fattr->cf_uid = cifs_sb->mnt_uid;
fattr->cf_gid = cifs_sb->mnt_gid;
@ -1322,7 +1327,6 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
}
/*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need
to set uid/gid */
inc_nlink(inode);
cifs_unix_basic_to_fattr(&fattr, pInfo, cifs_sb);
cifs_fill_uniqueid(inode->i_sb, &fattr);
@ -1355,7 +1359,6 @@ mkdir_retry_old:
d_drop(direntry);
} else {
mkdir_get_info:
inc_nlink(inode);
if (pTcon->unix_ext)
rc = cifs_get_inode_info_unix(&newinode, full_path,
inode->i_sb, xid);
@ -1436,6 +1439,11 @@ mkdir_get_info:
}
}
mkdir_out:
/*
* Force revalidate to get parent dir info when needed since cached
* attributes are invalid now.
*/
CIFS_I(inode)->time = 0;
kfree(full_path);
FreeXid(xid);
cifs_put_tlink(tlink);
@ -1475,7 +1483,6 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)
cifs_put_tlink(tlink);
if (!rc) {
drop_nlink(inode);
spin_lock(&direntry->d_inode->i_lock);
i_size_write(direntry->d_inode, 0);
clear_nlink(direntry->d_inode);
@ -1483,12 +1490,15 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)
}
cifsInode = CIFS_I(direntry->d_inode);
cifsInode->time = 0; /* force revalidate to go get info when
needed */
/* force revalidate to go get info when needed */
cifsInode->time = 0;
cifsInode = CIFS_I(inode);
cifsInode->time = 0; /* force revalidate to get parent dir info
since cached search results now invalid */
/*
* Force revalidate to get parent dir info when needed since cached
* attributes are invalid now.
*/
cifsInode->time = 0;
direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
current_fs_time(inode->i_sb);