mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
316 lines
7.4 KiB
C
316 lines
7.4 KiB
C
/*
|
|
* Copyright (c) 1988, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1988, 1993, 1994\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)chown.c 8.8 (Berkeley) 4/4/94";
|
|
#endif /* not lint */
|
|
#endif
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fts.h>
|
|
#include <grp.h>
|
|
#include <libgen.h>
|
|
#include <pwd.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
static void a_gid(const char *);
|
|
static void a_uid(const char *);
|
|
static void chownerr(const char *);
|
|
static uid_t id(const char *, const char *);
|
|
static void usage(void);
|
|
|
|
static uid_t uid;
|
|
static gid_t gid;
|
|
static int ischown;
|
|
static const char *gname;
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
FTS *ftsp;
|
|
FTSENT *p;
|
|
int Hflag, Lflag, Rflag, fflag, hflag, vflag, xflag;
|
|
int ch, fts_options, rval;
|
|
char *cp;
|
|
|
|
ischown = (strcmp(basename(argv[0]), "chown") == 0);
|
|
|
|
Hflag = Lflag = Rflag = fflag = hflag = vflag = xflag = 0;
|
|
while ((ch = getopt(argc, argv, "HLPRfhvx")) != -1)
|
|
switch (ch) {
|
|
case 'H':
|
|
Hflag = 1;
|
|
Lflag = 0;
|
|
break;
|
|
case 'L':
|
|
Lflag = 1;
|
|
Hflag = 0;
|
|
break;
|
|
case 'P':
|
|
Hflag = Lflag = 0;
|
|
break;
|
|
case 'R':
|
|
Rflag = 1;
|
|
break;
|
|
case 'f':
|
|
fflag = 1;
|
|
break;
|
|
case 'h':
|
|
hflag = 1;
|
|
break;
|
|
case 'v':
|
|
vflag++;
|
|
break;
|
|
case 'x':
|
|
xflag = 1;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argv += optind;
|
|
argc -= optind;
|
|
|
|
if (argc < 2)
|
|
usage();
|
|
|
|
if (Rflag) {
|
|
fts_options = FTS_PHYSICAL;
|
|
if (hflag && (Hflag || Lflag))
|
|
errx(1, "the -R%c and -h options may not be "
|
|
"specified together", Hflag ? 'H' : 'L');
|
|
if (Hflag)
|
|
fts_options |= FTS_COMFOLLOW;
|
|
else if (Lflag) {
|
|
fts_options &= ~FTS_PHYSICAL;
|
|
fts_options |= FTS_LOGICAL;
|
|
}
|
|
} else
|
|
fts_options = hflag ? FTS_PHYSICAL : FTS_LOGICAL;
|
|
if (xflag)
|
|
fts_options |= FTS_XDEV;
|
|
|
|
uid = (uid_t)-1;
|
|
gid = (gid_t)-1;
|
|
if (ischown) {
|
|
if ((cp = strchr(*argv, ':')) != NULL) {
|
|
*cp++ = '\0';
|
|
a_gid(cp);
|
|
}
|
|
#ifdef SUPPORT_DOT
|
|
else if ((cp = strchr(*argv, '.')) != NULL) {
|
|
warnx("separation of user and group with a period is deprecated");
|
|
*cp++ = '\0';
|
|
a_gid(cp);
|
|
}
|
|
#endif
|
|
a_uid(*argv);
|
|
} else
|
|
a_gid(*argv);
|
|
|
|
if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
|
|
err(1, NULL);
|
|
|
|
for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
|
|
switch (p->fts_info) {
|
|
case FTS_D: /* Change it at FTS_DP. */
|
|
if (!Rflag)
|
|
fts_set(ftsp, p, FTS_SKIP);
|
|
continue;
|
|
case FTS_DNR: /* Warn, chown. */
|
|
warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
|
|
rval = 1;
|
|
break;
|
|
case FTS_ERR: /* Warn, continue. */
|
|
case FTS_NS:
|
|
warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
|
|
rval = 1;
|
|
continue;
|
|
case FTS_SL:
|
|
case FTS_SLNONE:
|
|
/*
|
|
* The only symlinks that end up here are ones that
|
|
* don't point to anything and ones that we found
|
|
* doing a physical walk.
|
|
*/
|
|
if (hflag)
|
|
break;
|
|
else
|
|
continue;
|
|
default:
|
|
break;
|
|
}
|
|
if ((uid == (uid_t)-1 || uid == p->fts_statp->st_uid) &&
|
|
(gid == (gid_t)-1 || gid == p->fts_statp->st_gid))
|
|
continue;
|
|
if ((hflag ? lchown : chown)(p->fts_accpath, uid, gid) == -1) {
|
|
if (!fflag) {
|
|
chownerr(p->fts_path);
|
|
rval = 1;
|
|
}
|
|
} else {
|
|
if (vflag) {
|
|
printf("%s", p->fts_path);
|
|
if (vflag > 1) {
|
|
if (ischown) {
|
|
printf(": %ju:%ju -> %ju:%ju",
|
|
(uintmax_t)
|
|
p->fts_statp->st_uid,
|
|
(uintmax_t)
|
|
p->fts_statp->st_gid,
|
|
(uid == (uid_t)-1) ?
|
|
(uintmax_t)
|
|
p->fts_statp->st_uid :
|
|
(uintmax_t)uid,
|
|
(gid == (gid_t)-1) ?
|
|
(uintmax_t)
|
|
p->fts_statp->st_gid :
|
|
(uintmax_t)gid);
|
|
} else {
|
|
printf(": %ju -> %ju",
|
|
(uintmax_t)
|
|
p->fts_statp->st_gid,
|
|
(gid == (gid_t)-1) ?
|
|
(uintmax_t)
|
|
p->fts_statp->st_gid :
|
|
(uintmax_t)gid);
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
}
|
|
if (errno)
|
|
err(1, "fts_read");
|
|
exit(rval);
|
|
}
|
|
|
|
static void
|
|
a_gid(const char *s)
|
|
{
|
|
struct group *gr;
|
|
|
|
if (*s == '\0') /* Argument was "uid[:.]". */
|
|
return;
|
|
gname = s;
|
|
gid = ((gr = getgrnam(s)) != NULL) ? gr->gr_gid : id(s, "group");
|
|
}
|
|
|
|
static void
|
|
a_uid(const char *s)
|
|
{
|
|
struct passwd *pw;
|
|
|
|
if (*s == '\0') /* Argument was "[:.]gid". */
|
|
return;
|
|
uid = ((pw = getpwnam(s)) != NULL) ? pw->pw_uid : id(s, "user");
|
|
}
|
|
|
|
static uid_t
|
|
id(const char *name, const char *type)
|
|
{
|
|
uid_t val;
|
|
char *ep;
|
|
|
|
/*
|
|
* XXX
|
|
* We know that uid_t's and gid_t's are unsigned longs.
|
|
*/
|
|
errno = 0;
|
|
val = strtoul(name, &ep, 10);
|
|
if (errno || *ep != '\0')
|
|
errx(1, "%s: illegal %s name", name, type);
|
|
return (val);
|
|
}
|
|
|
|
static void
|
|
chownerr(const char *file)
|
|
{
|
|
static uid_t euid = -1;
|
|
static int ngroups = -1;
|
|
static long ngroups_max;
|
|
gid_t *groups;
|
|
|
|
/* Check for chown without being root. */
|
|
if (errno != EPERM || (uid != (uid_t)-1 &&
|
|
euid == (uid_t)-1 && (euid = geteuid()) != 0)) {
|
|
warn("%s", file);
|
|
return;
|
|
}
|
|
|
|
/* Check group membership; kernel just returns EPERM. */
|
|
if (gid != (gid_t)-1 && ngroups == -1 &&
|
|
euid == (uid_t)-1 && (euid = geteuid()) != 0) {
|
|
ngroups_max = sysconf(_SC_NGROUPS_MAX) + 1;
|
|
if ((groups = malloc(sizeof(gid_t) * ngroups_max)) == NULL)
|
|
err(1, "malloc");
|
|
ngroups = getgroups(ngroups_max, groups);
|
|
while (--ngroups >= 0 && gid != groups[ngroups]);
|
|
free(groups);
|
|
if (ngroups < 0) {
|
|
warnx("you are not a member of group %s", gname);
|
|
return;
|
|
}
|
|
}
|
|
warn("%s", file);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
if (ischown)
|
|
(void)fprintf(stderr, "%s\n%s\n",
|
|
"usage: chown [-fhvx] [-R [-H | -L | -P]] owner[:group]"
|
|
" file ...",
|
|
" chown [-fhvx] [-R [-H | -L | -P]] :group file ...");
|
|
else
|
|
(void)fprintf(stderr, "%s\n",
|
|
"usage: chgrp [-fhvx] [-R [-H | -L | -P]] group file ...");
|
|
exit(1);
|
|
}
|