morpheus-base

morpheus base system
git clone git://git.2f30.org/morpheus-base.git
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chgrp.c (1052B)


      1 /* See LICENSE file for copyright and license details. */
      2 #include <errno.h>
      3 #include <grp.h>
      4 #include <stdio.h>
      5 #include <stdlib.h>
      6 #include <string.h>
      7 #include <sys/stat.h>
      8 #include <sys/types.h>
      9 #include <unistd.h>
     10 
     11 #include "util.h"
     12 
     13 static int gid;
     14 static int status;
     15 static int rflag;
     16 static struct stat st;
     17 
     18 static void
     19 usage(void)
     20 {
     21 	eprintf("usage: chgrp [-R] groupname file...\n");
     22 }
     23 
     24 static void
     25 chgrp(const char *path)
     26 {
     27 	if (chown(path, st.st_uid, gid) < 0) {
     28 		weprintf("chown %s:", path);
     29 		status = 1;
     30 	}
     31 	if (rflag)
     32 		recurse(path, chgrp);
     33 }
     34 
     35 int
     36 main(int argc, char *argv[])
     37 {
     38 	struct group *gr;
     39 
     40 	ARGBEGIN {
     41 	case 'R':
     42 		rflag = 1;
     43 		break;
     44 	default:
     45 		usage();
     46 	} ARGEND;
     47 
     48 	if (argc < 2)
     49 		usage();
     50 
     51 	errno = 0;
     52 	gr = getgrnam(argv[0]);
     53 	if (!gr) {
     54 		if (errno)
     55 			eprintf("getgrnam %s:", argv[0]);
     56 		else
     57 			eprintf("getgrnam %s: no such group\n", argv[0]);
     58 	}
     59 	gid = gr->gr_gid;
     60 
     61 	while (*++argv) {
     62 		if (stat(*argv, &st) < 0) {
     63 			weprintf("stat %s:", *argv);
     64 			status = 1;
     65 			continue;
     66 		}
     67 		chgrp(*argv);
     68 	}
     69 	return status;
     70 }