edbcc223ea
This way, we don't use PATH_MAX bytes on the stack per path component, and don't have to keep copying the complete path around.
77 lines
1.4 KiB
C
77 lines
1.4 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <sys/stat.h>
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <grp.h>
|
|
#include <unistd.h>
|
|
|
|
#include "fs.h"
|
|
#include "util.h"
|
|
|
|
static int hflag = 0;
|
|
static gid_t gid = -1;
|
|
static int ret = 0;
|
|
|
|
static void
|
|
chgrp(int dirfd, const char *name, struct stat *st, void *data, struct recursor *r)
|
|
{
|
|
int flags = 0;
|
|
|
|
if ((r->maxdepth == 0 && r->follow == 'P') || (r->follow == 'H' && r->depth) || (hflag && !(r->depth)))
|
|
flags |= AT_SYMLINK_NOFOLLOW;
|
|
if (fchownat(dirfd, name, -1, gid, flags) < 0) {
|
|
weprintf("chown %s:", r->path);
|
|
ret = 1;
|
|
} else if (S_ISDIR(st->st_mode)) {
|
|
recurse(dirfd, name, NULL, r);
|
|
}
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
eprintf("usage: %s [-h] [-R [-H | -L | -P]] group file ...\n", argv0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
struct group *gr;
|
|
struct recursor r = { .fn = chgrp, .hist = NULL, .depth = 0, .maxdepth = 1,
|
|
.follow = 'P', .flags = 0 };
|
|
|
|
ARGBEGIN {
|
|
case 'h':
|
|
hflag = 1;
|
|
break;
|
|
case 'R':
|
|
r.maxdepth = 0;
|
|
break;
|
|
case 'H':
|
|
case 'L':
|
|
case 'P':
|
|
r.follow = ARGC();
|
|
break;
|
|
default:
|
|
usage();
|
|
} ARGEND
|
|
|
|
if (argc < 2)
|
|
usage();
|
|
|
|
errno = 0;
|
|
if ((gr = getgrnam(argv[0]))) {
|
|
gid = gr->gr_gid;
|
|
} else {
|
|
if (errno)
|
|
eprintf("getgrnam %s:", argv[0]);
|
|
gid = estrtonum(argv[0], 0, UINT_MAX);
|
|
}
|
|
|
|
for (argc--, argv++; *argv; argc--, argv++)
|
|
recurse(AT_FDCWD, *argv, NULL, &r);
|
|
|
|
return ret || recurse_status;
|
|
}
|