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cifs: Modify struct cifs_unix_set_info_args to hold a kuid_t and a kgid_t 

Use INVALID_UID and INVALID_GID instead of NO_CHANGE_64 to indicate
the value should not be changed.

In cifs_fill_unix_set_info convert from kuids and kgids into uids and
gids that will fit in FILE_UNIX_BASIC_INFO.

Cc: Steve French <smfrench@gmail.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2013-02-06 00:57:56 -08:00
parent dbfb98af18
commit 49418b2c28
5 changed files with 28 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/cifs/cifsproto.h
View File

@ -305,8 +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));

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,

4
fs/cifs/file.c
View File

@ -487,8 +487,8 @@ 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,

14
fs/cifs/inode.c
View File

@ -1249,14 +1249,14 @@ 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,
@ -2017,12 +2017,12 @@ 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);