svn commit: r243084 - head/usr.sbin/chkgrp

[Eitan Adler]

Author: eadler
Date: Thu Nov 15 15:16:50 2012
New Revision: 243084
URL: http://svnweb.freebsd.org/changeset/base/243084

Log:
  Add support for a -q flag.  While here make the custom argument parsing
  use getopt instead of hacking on it more.  This change also fixes the
  method of silencing the compiler warning about gfn being used
  uninitialized.
  
  Approved by:	cperciva
  MFC after:	1 week

Modified:
  head/usr.sbin/chkgrp/chkgrp.8
  head/usr.sbin/chkgrp/chkgrp.c

Modified: head/usr.sbin/chkgrp/chkgrp.8
==============================================================================
--- head/usr.sbin/chkgrp/chkgrp.8	Thu Nov 15 15:06:24 2012	(r243083)
+++ head/usr.sbin/chkgrp/chkgrp.8	Thu Nov 15 15:16:50 2012	(r243084)
@@ -34,6 +34,7 @@
 .Nd check the syntax of the group file
 .Sh SYNOPSIS
 .Nm
+.Op Fl q
 .Op Ar groupfile
 .Sh DESCRIPTION
 The
@@ -47,6 +48,12 @@ contains whitespace, and that the third 
 numeric.
 It will also check for invalid characters in the group names
 and group members.
+The following options are available:
+.Bl -tag -width indent
+.It Fl q
+This option disables printing of text when the group format
+is correct.
+.El
 .Sh FILES
 .Bl -tag -width /etc/group -compact
 .It Pa /etc/group

Modified: head/usr.sbin/chkgrp/chkgrp.c
==============================================================================
--- head/usr.sbin/chkgrp/chkgrp.c	Thu Nov 15 15:06:24 2012	(r243083)
+++ head/usr.sbin/chkgrp/chkgrp.c	Thu Nov 15 15:16:50 2012	(r243084)
@@ -37,11 +37,12 @@ __FBSDID("$FreeBSD$");
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <sysexits.h>
 
 static char empty[] = { 0 };
 
-static void
+static void __dead2
 usage(void)
 {
     fprintf(stderr, "usage: chkgrp [groupfile]\n");
@@ -53,24 +54,33 @@ main(int argc, char *argv[])
 {
     unsigned int i;
     size_t len;
+    int quiet;
+    int ch;
     int n = 0, k, e = 0;
     char *line, *f[4], *p;
     const char *cp, *gfn;
     FILE *gf;
 
-    /* check arguments */
-    switch (argc) {
-    case 1:
-	gfn = "/etc/group";
-	break;
-    case 2:
-	gfn = argv[1];
-	break;
-    default:
-	gfn = NULL; /* silence compiler */
-	usage();
+    quiet = 0;
+    while ((ch = getopt(argc, argv, "q")) != -1) {
+	    switch (ch) {
+		case 'q':
+			quiet = 1;
+			break;
+		case '?':
+		default:
+			printf("hello\n");
+			usage();
+	    }
     }
 
+    if (optind == argc)
+	    gfn = "/etc/group";
+    else if (optind == argc - 1)
+	    gfn = argv[optind];
+    else
+	    usage();
+
     /* open group file */
     if ((gf = fopen(gfn, "r")) == NULL)
 	err(EX_NOINPUT, "%s", gfn);
@@ -178,7 +188,7 @@ main(int argc, char *argv[])
 
     /* done */
     fclose(gf);
-    if (e == 0)
+    if (e == 0 && quiet == 0)
 	printf("%s is fine\n", gfn);
     exit(e ? EX_DATAERR : EX_OK);
 }
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