sbase/chown.c

106 lines
1.9 KiB
C
Raw Normal View History

2011-05-24 23:24:33 +00:00
/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <grp.h>
#include <limits.h>
2011-05-24 23:24:33 +00:00
#include <pwd.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "fs.h"
2011-05-24 23:24:33 +00:00
#include "util.h"
static int hflag = 0;
static int Rflag = 0;
static uid_t uid = -1;
static gid_t gid = -1;
static int ret = 0;
2011-05-24 23:24:33 +00:00
2015-02-12 20:56:06 +00:00
static void
chownpwgr(const char *path, void *data, struct recursor *r)
2015-02-12 20:56:06 +00:00
{
char *chownf_name;
int (*chownf)(const char *, uid_t, gid_t);
if (r->follow == 'P' || (r->follow == 'H' && r->depth) || (hflag && !(r->depth))) {
chownf_name = "lchown";
chownf = lchown;
} else {
chownf_name = "chown";
chownf = chown;
}
if (chownf(path, uid, gid) < 0) {
weprintf("%s %s:", chownf_name, path);
2015-02-12 20:56:06 +00:00
ret = 1;
} else if (Rflag) {
recurse(path, NULL, r);
}
2015-02-12 20:56:06 +00:00
}
2011-05-24 23:24:33 +00:00
2013-06-14 18:20:47 +00:00
static void
usage(void)
{
eprintf("usage: %s [-h] [-R [-H | -L | -P]] [owner][:[group]] file ...\n", argv0);
2013-06-14 18:20:47 +00:00
}
2011-05-24 23:24:33 +00:00
int
main(int argc, char *argv[])
{
2014-11-02 22:24:53 +00:00
struct group *gr;
struct passwd *pw;
struct recursor r = { .fn = chownpwgr, .hist = NULL, .depth = 0, .follow = 'P', .flags = 0};
char *owner, *group;
2011-05-24 23:24:33 +00:00
2013-06-14 18:20:47 +00:00
ARGBEGIN {
2015-02-12 20:56:06 +00:00
case 'h':
hflag = 1;
2015-02-12 20:56:06 +00:00
break;
2013-06-14 18:20:47 +00:00
case 'r':
case 'R':
Rflag = 1;
2013-06-14 18:20:47 +00:00
break;
case 'H':
case 'L':
case 'P':
r.follow = ARGC();
break;
2013-06-14 18:20:47 +00:00
default:
usage();
} ARGEND;
if (argc < 2)
2013-06-14 18:20:47 +00:00
usage();
owner = argv[0];
if ((group = strchr(owner, ':')))
2011-05-24 23:24:33 +00:00
*group++ = '\0';
if (owner && *owner) {
2011-05-24 23:24:33 +00:00
errno = 0;
pw = getpwnam(owner);
if (pw) {
2014-11-02 22:24:53 +00:00
uid = pw->pw_uid;
} else {
if (errno)
2014-07-09 13:48:59 +00:00
eprintf("getpwnam %s:", owner);
uid = estrtonum(owner, 0, UINT_MAX);
2014-07-09 13:48:59 +00:00
}
2011-05-24 23:24:33 +00:00
}
if (group && *group) {
2011-05-24 23:24:33 +00:00
errno = 0;
gr = getgrnam(group);
if (gr) {
2014-11-02 22:24:53 +00:00
gid = gr->gr_gid;
} else {
if (errno)
2014-07-09 13:48:59 +00:00
eprintf("getgrnam %s:", group);
gid = estrtonum(group, 0, UINT_MAX);
2014-07-09 13:48:59 +00:00
}
2011-05-24 23:24:33 +00:00
}
for (argc--, argv++; *argv; argc--, argv++)
chownpwgr(*argv, NULL, &r);
2013-06-14 18:20:47 +00:00
return ret || recurse_status;
2011-05-24 23:24:33 +00:00
}