xfs_quota: fully support users and groups beginning with digits

A normal user or group name allow beginning with digits, but xfs_quota
can't create a limit for that user or group. The reason is 'strtoul'
function only translate digits at the beginning, it will ignore
letters after digits.

There's a commit fd537fc50eeade63bbd2a66105f39d04a011a7f5, it try to
fix "xfsprogs: xfs_quota allow user or group names beginning with
digits". But it doesn't effect 'limit' command, so a command likes:

  xfs_quota 'limit .... 12345678-user' xxxx

will try to create limit for username="12345678", not "12345678-user".

This patch will fix this problem, and a test case xfs/138 in xfstests
is used to reproduce this bug.

Signed-off-by: Zorro Lang <zlang@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --git a/libxcmd/input.c b/libxcmd/input.c
index c505ab3d4c313452def972fabb07ba6e0b68b808..5a7dce353943986040420d6b0d9f7abf31395b87 100644 (file)
--- a/libxcmd/input.c
+++ b/libxcmd/input.c
@@ -366,7 +366,7 @@ uid_from_string(
        char            *sp;
 
        uid_long = strtoul(user, &sp, 10);
-       if (sp != user) {
+       if (sp != user && *sp == '\0') {
                if ((uid_long == ULONG_MAX && errno == ERANGE)
                                || (uid_long > (uid_t)-1))
                        return -1;
@@ -387,7 +387,7 @@ gid_from_string(
        char            *sp;
 
        gid_long = strtoul(group, &sp, 10);
-       if (sp != group) {
+       if (sp != group && *sp == '\0') {
                if ((gid_long == ULONG_MAX && errno == ERANGE)
                                || (gid_long > (gid_t)-1))
                        return -1;