#ifndef lint
static char const copyright[] =
"@(#) Copyright (c) 1989, 1993, 1994\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#ifndef lint
#if 0
static char sccsid[] = "@(#)chmod.c 8.8 (Berkeley) 4/1/94";
#endif
#endif
#include <sys/cdefs.h>
__RCSID("$FreeBSD: src/bin/chmod/chmod.c,v 1.27 2002/08/04 05:29:13 obrien Exp $");
#include <sys/types.h>
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <fts.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef __APPLE__
#include "chmod_acl.h"
#endif
int fflag = 0;
int main(int, char *[]);
void usage(void);
int
main(int argc, char *argv[])
{
FTS *ftsp = NULL;
FTSENT *p = NULL;
mode_t *set = NULL;
long val = 0;
int oct = 0;
int Hflag, Lflag, Pflag, Rflag, ch, fts_options, hflag, rval;
int vflag;
char *ep, *mode;
mode_t newmode, omode;
#ifdef __APPLE__
unsigned int acloptflags = 0;
int aclpos = -1, inheritance_level = 0;
int index = 0, acloptlen = 0, ace_arg_not_required = 0;
acl_t acl_input = NULL;
#endif
int (*change_mode)(const char *, mode_t);
set = NULL;
omode = 0;
Hflag = Lflag = Pflag = Rflag = fflag = hflag = vflag = 0;
#ifndef __APPLE__
while ((ch = getopt(argc, argv, "HLPRXfghorstuvwx")) != -1)
#else
while ((ch = getopt(argc, argv, "ACEHILNPRVXafghinorstuvwx")) != -1)
#endif
switch (ch) {
case 'H':
Hflag = 1;
Lflag = 0;
Pflag = 0;
break;
case 'L':
Lflag = 1;
Hflag = 0;
Pflag = 0;
break;
case 'P':
Hflag = Lflag = 0;
Pflag = 1;
break;
case 'R':
Rflag = 1;
break;
case 'f':
fflag = 1;
break;
case 'h':
hflag = 1;
break;
#ifdef __APPLE__
case 'a':
if (argv[optind - 1][0] == '-' &&
argv[optind - 1][1] == ch)
--optind;
goto done;
case 'A':
acloptflags |= ACL_FLAG | ACL_TO_STDOUT;
ace_arg_not_required = 1;
errx(1, "-A not implemented");
goto done;
case 'E':
acloptflags |= ACL_FLAG | ACL_FROM_STDIN;
goto done;
case 'C':
acloptflags |= ACL_FLAG | ACL_CHECK_CANONICITY;
ace_arg_not_required = 1;
goto done;
case 'i':
acloptflags |= ACL_FLAG | ACL_REMOVE_INHERIT_FLAG;
ace_arg_not_required = 1;
goto done;
case 'I':
acloptflags |= ACL_FLAG | ACL_REMOVE_INHERITED_ENTRIES;
ace_arg_not_required = 1;
goto done;
case 'n':
acloptflags |= ACL_FLAG | ACL_NO_TRANSLATE;
break;
case 'N':
acloptflags |= ACL_FLAG | ACL_CLEAR_FLAG;
ace_arg_not_required = 1;
goto done;
case 'V':
acloptflags |= ACL_FLAG | ACL_INVOKE_EDITOR;
ace_arg_not_required = 1;
errx(1, "-V not implemented");
goto done;
#endif
case 'g': case 'o': case 'r': case 's':
case 't': case 'u': case 'w': case 'X': case 'x':
if (argv[optind - 1][0] == '-' &&
argv[optind - 1][1] == ch &&
argv[optind - 1][2] == '\0')
--optind;
goto done;
case 'v':
vflag++;
break;
case '?':
default:
usage();
}
done: argv += optind;
argc -= optind;
#ifdef __APPLE__
if (argc < ((acloptflags & ACL_FLAG) ? 1 : 2))
usage();
if (!Rflag && (Hflag || Lflag || Pflag))
warnx("options -H, -L, -P only useful with -R");
#else
if (argc < 2)
usage();
#endif
#ifdef __APPLE__
if (!(acloptflags & ACL_FLAG) && ((acloptlen = strlen(argv[0])) > 1) && (argv[0][1] == 'a')) {
acloptflags |= ACL_FLAG;
switch (argv[0][0]) {
case '+':
acloptflags |= ACL_SET_FLAG;
break;
case '-':
acloptflags |= ACL_DELETE_FLAG;
break;
case '=':
acloptflags |= ACL_REWRITE_FLAG;
break;
default:
acloptflags &= ~ACL_FLAG;
goto apnoacl;
}
if (argc < 3)
usage();
if (acloptlen > 2) {
for (index = 2; index < acloptlen; index++) {
switch (argv[0][index]) {
case '#':
acloptflags |= ACL_ORDER_FLAG;
if (argc < ((acloptflags & ACL_DELETE_FLAG)
? 3 : 4))
usage();
argv++;
argc--;
errno = 0;
aclpos = strtol(argv[0], &ep, 0);
if (aclpos > ACL_MAX_ENTRIES
|| aclpos < 0)
errno = ERANGE;
if (errno || *ep)
errx(1, "Invalid ACL entry number: %d", aclpos);
if (acloptflags & ACL_DELETE_FLAG)
ace_arg_not_required = 1;
goto apdone;
case 'i':
acloptflags |= ACL_INHERIT_FLAG;
inheritance_level++;
if (inheritance_level > 1)
warnx("Inheritance across more than one generation is not currently supported");
if (inheritance_level >= MAX_INHERITANCE_LEVEL)
goto apdone;
break;
default:
errno = EINVAL;
usage();
}
}
}
apdone:
argv++;
argc--;
}
apnoacl:
#endif
if (Rflag) {
fts_options = FTS_PHYSICAL;
if (hflag)
errx(1,
"the -R and -h options may not be specified together.");
if (Hflag)
fts_options |= FTS_COMFOLLOW;
if (Lflag) {
fts_options &= ~FTS_PHYSICAL;
fts_options |= FTS_LOGICAL;
}
} else
fts_options = hflag ? FTS_PHYSICAL : FTS_LOGICAL;
if (hflag)
change_mode = lchmod;
else
change_mode = chmod;
#ifdef __APPLE__
if (acloptflags & ACL_FROM_STDIN) {
int readval = 0, readtotal = 0;
mode = (char *) malloc(MAX_ACL_TEXT_SIZE);
if (mode == NULL)
err(1, "Unable to allocate mode string");
do {
readtotal += readval;
readval = read(STDIN_FILENO, mode + readtotal,
MAX_ACL_TEXT_SIZE);
} while ((readval > 0) && (readtotal <= MAX_ACL_TEXT_SIZE));
if (0 == readtotal)
errx(1, "-E specified, but read from STDIN failed");
else
mode[readtotal - 1] = '\0';
--argv;
}
else
#endif
mode = *argv;
#ifdef __APPLE__
if ((acloptflags & ACL_FLAG)) {
if (ace_arg_not_required) {
--argv;
}
else {
acl_input = parse_acl_entries(mode);
if (acl_input == NULL) {
errx(1, "Invalid ACL specification: %s", mode);
}
}
}
else {
#endif
if (*mode >= '0' && *mode <= '7') {
errno = 0;
val = strtol(mode, &ep, 8);
if (val > USHRT_MAX || val < 0)
errno = ERANGE;
if (errno)
err(1, "Invalid file mode: %s", mode);
if (*ep)
errx(1, "Invalid file mode: %s", mode);
omode = (mode_t)val;
oct = 1;
} else {
if ((set = setmode(mode)) == NULL)
errx(1, "Invalid file mode: %s", mode);
oct = 0;
}
#ifdef __APPLE__
}
#endif
if ((ftsp = fts_open(++argv, fts_options, 0)) == NULL)
err(1, "fts_open");
for (rval = 0; (p = fts_read(ftsp)) != NULL;) {
switch (p->fts_info) {
case FTS_D:
if (!Rflag)
(void)fts_set(ftsp, p, FTS_SKIP);
break;
case FTS_DNR:
warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
rval = 1;
break;
case FTS_DP:
continue;
case FTS_NS:
if (acloptflags & ACL_FLAG)
break;
case FTS_ERR:
warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
rval = 1;
continue;
case FTS_SL:
case FTS_SLNONE:
if (!hflag)
continue;
default:
break;
}
#ifdef __APPLE__
if (acloptflags & ACL_FLAG) {
if (0 != modify_file_acl(acloptflags, p->fts_accpath, acl_input, aclpos, inheritance_level))
rval = 1;
}
else {
#endif
newmode = oct ? omode : getmode(set, p->fts_statp->st_mode);
if ((newmode & ALLPERMS) == (p->fts_statp->st_mode & ALLPERMS))
continue;
if ((*change_mode)(p->fts_accpath, newmode) && !fflag) {
warn("Unable to change file mode on %s", p->fts_path);
rval = 1;
} else {
if (vflag) {
(void)printf("%s", p->fts_accpath);
if (vflag > 1) {
char m1[12], m2[12];
strmode(p->fts_statp->st_mode, m1);
strmode((p->fts_statp->st_mode &
S_IFMT) | newmode, m2);
(void)printf(": 0%o [%s] -> 0%o [%s]",
p->fts_statp->st_mode, m1,
(p->fts_statp->st_mode & S_IFMT) |
newmode, m2);
}
(void)printf("\n");
}
}
#ifdef __APPLE__
}
#endif
}
if (errno)
err(1, "fts_read");
#ifdef __APPLE__
if (acl_input)
acl_free(acl_input);
if (mode && (acloptflags & ACL_FROM_STDIN))
free(mode);
#endif
if (set)
free(set);
exit(rval);
}
void
usage(void)
{
#ifdef __APPLE__
(void)fprintf(stderr,
"usage:\tchmod [-fhv] [-R [-H | -L | -P]] [-a | +a | =a [i][# [ n]]] mode|entry file ...\n"
"\tchmod [-fhv] [-R [-H | -L | -P]] [-E | -C | -N | -i | -I] file ...\n");
#else
(void)fprintf(stderr,
"usage: chmod [-fhv] [-R [-H | -L | -P]] mode file ...\n");
#endif
exit(1);
}