sbase/chgrp.c

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/* See LICENSE file for copyright and license details. */
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#include <sys/stat.h>
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#include <errno.h>
#include <grp.h>
#include <unistd.h>
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#include "util.h"
static struct stat st;
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static int hflag = 0;
static int Rflag = 0;
static gid_t gid = -1;
static int ret = 0;
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static void
chgrp(const char *path, int depth)
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{
char *chownf_name;
int (*chownf)(const char *, uid_t, gid_t);
if (recurse_follow == 'P' || (recurse_follow == 'H' && depth) || (hflag && !depth)) {
chownf_name = "lchown";
chownf = lchown;
} else {
chownf_name = "chown";
chownf = chown;
}
if (chownf(path, st.st_uid, gid) < 0) {
weprintf("%s %s:", chownf_name, path);
ret = 1;
} else if (Rflag) {
recurse(path, chgrp, depth);
}
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}
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static void
usage(void)
{
eprintf("usage: chgrp [-h] [-R [-H | -L | -P]] group file ...\n");
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}
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int
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main(int argc, char *argv[])
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{
struct group *gr;
ARGBEGIN {
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case 'h':
hflag = 1;
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break;
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case 'R':
Rflag = 1;
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break;
case 'H':
case 'L':
case 'P':
recurse_follow = ARGC();
break;
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default:
usage();
} ARGEND;
if (argc < 2)
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usage();
errno = 0;
if (!(gr = getgrnam(argv[0]))) {
if (errno)
eprintf("getgrnam %s:", argv[0]);
else
eprintf("getgrnam %s: no such group\n", argv[0]);
}
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gid = gr->gr_gid;
for (; *argv; argc--, argv++) {
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if (stat(*argv, &st) < 0) {
weprintf("stat %s:", *argv);
ret = 1;
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continue;
}
chgrp(*argv, 0);
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}
return ret;
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}