[PATCH] xfsprogs: xfs_quota allow user or group names beginning with digits

[rjohnston@xxxxxxx]

xfs_quota does not properly parse users or groups that begin with a number.
Only call atoi when user or group consists of digits only.

Signed-off-by: Rich Johnston <rjohnston@xxxxxxx>

---
 include/input.h |    1 +
 libxcmd/input.c |   12 ++++++++++++
 quota/quota.c   |    4 ++--
 quota/quota.h   |    1 +
 4 files changed, 16 insertions(+), 2 deletions(-)

Index: b/include/input.h
===================================================================
--- a/include/input.h
+++ b/include/input.h
@@ -46,6 +46,7 @@ extern void   timestr(struct timeval *tv,
 extern uid_t   uid_from_string(char *user);
 extern gid_t   gid_from_string(char *group);
 extern prid_t  prid_from_string(char *project);
+extern boolean_t isdigits_only(const char *str);
 
 #define HAVE_FTW_H 1   /* TODO: configure me */
 
Index: b/libxcmd/input.c
===================================================================
--- a/libxcmd/input.c
+++ b/libxcmd/input.c
@@ -398,6 +398,18 @@ gid_from_string(
        return -1;
 }
 
+boolean_t isdigits_only(
+       const char *str)
+{
+       int i;
+
+       for (i=0; i < strlen(str); i++) {
+               if (!isdigit(str[i]))
+                       return B_FALSE;
+       }
+       return B_TRUE;
+}
+
 #define HAVE_FTW_H 1   /* TODO: configure me */
 
 #ifndef HAVE_FTW_H
Index: b/quota/quota.c
===================================================================
--- a/quota/quota.c
+++ b/quota/quota.c
@@ -224,7 +224,7 @@ quota_user_type(
        uid_t           id;
 
        if (name) {
-               if (isdigit(name[0])) {
+               if (isdigits_only(name)) {
                        id = atoi(name);
                        name = getusername(id, flags & NO_LOOKUP_FLAG);
                } else if ((u = getpwnam(name))) {
@@ -273,7 +273,7 @@ quota_group_type(
        int             i, ngroups, dofree = 0;
 
        if (name) {
-               if (isdigit(name[0])) {
+               if (isdigits_only(name)) {
                        gid = atoi(name);
                        name = getgroupname(gid, flags & NO_LOOKUP_FLAG);
                } else {
Index: b/quota/quota.h
===================================================================
--- a/quota/quota.h
+++ b/quota/quota.h
@@ -80,4 +80,5 @@ enum {
 extern char *uid_to_name(__uint32_t __uid);
 extern char *gid_to_name(__uint32_t __gid);
 extern char *prid_to_name(__uint32_t __prid);
+extern boolean_t isdigits_only(const char *);