[hackers] [PATCH v3 2/2][sbase] chgrp: parse gid if operand is not group name

[Richard Ipsum]

---
 chgrp.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/chgrp.c b/chgrp.c
index 7ee3553..21e7e22 100644
--- a/chgrp.c
+++ b/chgrp.c
@@ -67,13 +67,16 @@ main(int argc, char *argv[])
                usage();
 
        errno = 0;
-       if (!(gr = getgrnam(argv[0]))) {
+       if ((gr = getgrnam(*argv))) {
+               gid = gr->gr_gid;
+       } else {
                if (errno)
-                       eprintf("getgrnam %s:", argv[0]);
-               else
-                       eprintf("getgrnam %s: no such group\n", argv[0]);
+                       eprintf("getgrnam %s:", *argv);
+               gid = estrtonum(*argv, 0, UINT_MAX);
        }
-       gid = gr->gr_gid;
+
+       if (gid == -1)
+               usage();
 
        for (argc--, argv++; *argv; argc--, argv++)
                recurse(*argv, NULL, &r);
-- 
2.21.0