[V2] 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>
Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>

---
V2:
        Change 'i=0' to 'i = 0' (sandeen suggestion) 
        Use bool instead of boolean_t (dchinner suggestion)

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

Index: xfsprogs/include/input.h
===================================================================
--- xfsprogs.orig/include/input.h       2013-03-22 14:22:09.000000000 -0500
+++ xfsprogs/include/input.h    2013-04-22 08:10:56.000000000 -0500
@@ -22,6 +22,7 @@
 #include <grp.h>
 #include <sys/types.h>
 #include <xfs/project.h>
+#include <stdbool.h>
 
 extern char    **breakline(char *input, int *count);
 extern void    doneline(char *input, char **vec);
@@ -46,6 +47,7 @@
 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 bool    isdigits_only(const char *str);
 
 #define HAVE_FTW_H 1   /* TODO: configure me */
 
Index: xfsprogs/libxcmd/input.c
===================================================================
--- xfsprogs.orig/libxcmd/input.c       2013-03-22 14:22:09.000000000 -0500
+++ xfsprogs/libxcmd/input.c    2013-04-22 08:07:01.000000000 -0500
@@ -19,6 +19,7 @@
 #include <xfs/xfs.h>
 #include <xfs/input.h>
 #include <ctype.h>
+#include <stdbool.h>
 
 #if defined(ENABLE_READLINE)
 # include <readline/history.h>
@@ -398,6 +399,18 @@
        return -1;
 }
 
+bool isdigits_only(
+       const char *str)
+{
+       int i;
+
+       for (i = 0; i < strlen(str); i++) {
+               if (!isdigit(str[i]))
+                       return false;
+       }
+       return true;
+}
+
 #define HAVE_FTW_H 1   /* TODO: configure me */
 
 #ifndef HAVE_FTW_H
Index: xfsprogs/quota/quota.c
===================================================================
--- xfsprogs.orig/quota/quota.c 2013-03-22 14:22:09.000000000 -0500
+++ xfsprogs/quota/quota.c      2013-04-22 07:20:52.000000000 -0500
@@ -224,7 +224,7 @@
        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 @@
        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: xfsprogs/quota/quota.h
===================================================================
--- xfsprogs.orig/quota/quota.h 2013-03-22 14:22:09.000000000 -0500
+++ xfsprogs/quota/quota.h      2013-04-22 08:12:26.000000000 -0500
@@ -19,6 +19,7 @@
 #include <xfs/xqm.h>
 #include <xfs/path.h>
 #include <xfs/project.h>
+#include <stdbool.h>
 
 /*
  * Different forms of XFS quota
@@ -80,4 +81,5 @@
 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 bool isdigits_only(const char *);