renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-11-20 16:46:23 +08:00
Code

cifs: reinstate original behavior when uid=/gid= options are specified

Browse Source 
This patch fixes the regression reported here:

http://bugzilla.kernel.org/show_bug.cgi?id=13861

commit 4ae1507f6d changed the default
behavior when the uid= or gid= option was specified for a mount. The
existing behavior was to always clobber the ownership information
provided by the server when these options were specified. The above
commit changed this behavior so that these options simply provided
defaults when the server did not provide this information (unless
"forceuid" or "forcegid" were specified)

This patch reverts this change so that the default behavior is restored.
It also adds "noforceuid" and "noforcegid" options to make it so that
ownership information from the server is preserved, even when the mount
has uid= or gid= options specified.

It also adds a couple of printk notices that pop up when forceuid or
forcegid options are specified without a uid= or gid= option.

Reported-by: Tom Chiverton <bugzilla.kernel.org@falkensweb.com>
Reviewed-by: Shirish Pargaonkar <shirishp@us.ibm.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff Layton 2009-07-31 06:56:09 -04:00 committed by Steve French
parent 5bd9052d79
commit 9b9d6b2434
1 changed files with 30 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
fs/cifs/connect.c
View File

@ -803,6 +803,10 @@ cifs_parse_mount_options(char *options, const char *devname,
char *data;
unsigned int temp_len, i, j;
char separator[2];
short int override_uid = -1;
short int override_gid = -1;
bool uid_specified = false;
bool gid_specified = false;
separator[0] = ',';
separator[1] = 0;
@ -1093,18 +1097,20 @@ cifs_parse_mount_options(char *options, const char *devname,
"too long.\n");
return 1;
}
} else if (strnicmp(data, "uid", 3) == 0) {
if (value && *value)
vol->linux_uid =
simple_strtoul(value, &value, 0);
} else if (strnicmp(data, "forceuid", 8) == 0) {
vol->override_uid = 1;
} else if (strnicmp(data, "gid", 3) == 0) {
if (value && *value)
vol->linux_gid =
simple_strtoul(value, &value, 0);
} else if (strnicmp(data, "forcegid", 8) == 0) {
vol->override_gid = 1;
} else if (!strnicmp(data, "uid", 3) && value && *value) {
vol->linux_uid = simple_strtoul(value, &value, 0);
uid_specified = true;
} else if (!strnicmp(data, "forceuid", 8)) {
override_uid = 1;
} else if (!strnicmp(data, "noforceuid", 10)) {
override_uid = 0;
} else if (!strnicmp(data, "gid", 3) && value && *value) {
vol->linux_gid = simple_strtoul(value, &value, 0);
gid_specified = true;
} else if (!strnicmp(data, "forcegid", 8)) {
override_gid = 1;
} else if (!strnicmp(data, "noforcegid", 10)) {
override_gid = 0;
} else if (strnicmp(data, "file_mode", 4) == 0) {
if (value && *value) {
vol->file_mode =
@ -1355,6 +1361,18 @@ cifs_parse_mount_options(char *options, const char *devname,
if (vol->UNCip == NULL)
vol->UNCip = &vol->UNC[2];
if (uid_specified)
vol->override_uid = override_uid;
else if (override_uid == 1)
printk(KERN_NOTICE "CIFS: ignoring forceuid mount option "
"specified with no uid= option.\n");
if (gid_specified)
vol->override_gid = override_gid;
else if (override_gid == 1)
printk(KERN_NOTICE "CIFS: ignoring forcegid mount option "
"specified with no gid= option.\n");
return 0;
}