2 files changed, 34 insertions, 0 deletions
diff --git a/lib/lib.h b/lib/lib.h
index e5667517..d8a1503e 100644
--- a/lib/lib.h
+++ b/lib/lib.h
@@ -123,6 +123,8 @@ struct passwd *xgetpwuid(uid_t uid);
 struct group *xgetgrgid(gid_t gid);
 struct passwd *xgetpwnam(char *name);
 struct group *xgetgrnam(char *name);
+struct passwd *xgetpwnamid(char *user);
+struct group *xgetgrnamid(char *group);
 void xsetuser(struct passwd *pwd);
 char *xreadlink(char *name);
 long xparsetime(char *arg, long units, long *fraction);
diff --git a/lib/xwrap.c b/lib/xwrap.c
index 44cd1684..54f2cbb5 100644
--- a/lib/xwrap.c
+++ b/lib/xwrap.c
@@ -477,6 +477,38 @@ struct group *xgetgrgid(gid_t gid)
   return group;
 }
 
+struct passwd *xgetpwnamid(char *user)
+{
+  struct passwd *up = getpwnam(user);
+  uid_t uid;
+
+  if (!up) {
+    char *s = 0;
+
+    uid = estrtol(user, &s, 10);
+    if (!errno && s && !*s) up = getpwuid(uid);
+  }
+  if (!up) perror_exit("user '%s'", user);
+
+  return up;
+}
+
+struct group *xgetgrnamid(char *group)
+{
+  struct group *gr = getgrnam(group);
+  gid_t gid;
+
+  if (!gr) {
+    char *s = 0;
+
+    gid = estrtol(group, &s, 10);
+    if (!errno && s && !*s) gr = getgrgid(gid);
+  }
+  if (!gr) perror_exit("group '%s'", group);
+
+  return gr;
+}
+
 struct passwd *xgetpwnam(char *name)
 {
   struct passwd *up = getpwnam(name);