sbase/chgrp.c

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/* See LICENSE file for copyright and license details. */
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#include <errno.h>
#include <grp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
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#include "util.h"
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static int gid;
static int status;
static int rflag;
static struct stat st;
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static void
usage(void)
{
eprintf("usage: chgrp [-R] groupname file...\n");
}
static void
chgrp(const char *path)
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{
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if (chown(path, st.st_uid, gid) < 0) {
weprintf("chown %s:", path);
status = 1;
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}
if (rflag)
recurse(path, chgrp);
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}
int
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main(int argc, char *argv[])
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{
struct group *gr;
ARGBEGIN {
case 'R':
rflag = 1;
break;
default:
usage();
} ARGEND;
if (argc < 2)
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usage();
errno = 0;
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gr = getgrnam(argv[0]);
if (errno)
eprintf("getgrnam %s:");
else if (!gr)
eprintf("getgrnam %s: no such group\n", argv[0]);
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gid = gr->gr_gid;
while (*++argv) {
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if (stat(*argv, &st) < 0) {
weprintf("stat %s:", *argv);
status = 1;
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continue;
}
chgrp(*argv);
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}
return status;
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}