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| Current File : //compat/linux/proc/self/root/usr/src/bin/setfacl/setfacl.c |
/*-
* Copyright (c) 2001 Chris D. Faulhaber
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/bin/setfacl/setfacl.c 216922 2011-01-03 17:17:31Z jh $");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/acl.h>
#include <sys/queue.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "setfacl.h"
static void add_filename(const char *filename);
static void usage(void);
static void
add_filename(const char *filename)
{
struct sf_file *file;
if (strlen(filename) > PATH_MAX - 1) {
warn("illegal filename");
return;
}
file = zmalloc(sizeof(struct sf_file));
file->filename = filename;
TAILQ_INSERT_TAIL(&filelist, file, next);
}
static void
usage(void)
{
fprintf(stderr, "usage: setfacl [-bdhkn] [-a position entries] "
"[-m entries] [-M file] [-x entries] [-X file] [file ...]\n");
exit(1);
}
int
main(int argc, char *argv[])
{
acl_t acl;
acl_type_t acl_type;
char filename[PATH_MAX];
int local_error, carried_error, ch, i, entry_number, ret;
int h_flag;
struct sf_file *file;
struct sf_entry *entry;
const char *fn_dup;
char *end;
struct stat sb;
acl_type = ACL_TYPE_ACCESS;
carried_error = local_error = 0;
h_flag = have_mask = have_stdin = n_flag = need_mask = 0;
TAILQ_INIT(&entrylist);
TAILQ_INIT(&filelist);
while ((ch = getopt(argc, argv, "M:X:a:bdhkm:nx:")) != -1)
switch(ch) {
case 'M':
entry = zmalloc(sizeof(struct sf_entry));
entry->acl = get_acl_from_file(optarg);
if (entry->acl == NULL)
err(1, "%s: get_acl_from_file() failed", optarg);
entry->op = OP_MERGE_ACL;
TAILQ_INSERT_TAIL(&entrylist, entry, next);
break;
case 'X':
entry = zmalloc(sizeof(struct sf_entry));
entry->acl = get_acl_from_file(optarg);
entry->op = OP_REMOVE_ACL;
TAILQ_INSERT_TAIL(&entrylist, entry, next);
break;
case 'a':
entry = zmalloc(sizeof(struct sf_entry));
entry_number = strtol(optarg, &end, 10);
if (end - optarg != (int)strlen(optarg))
errx(1, "%s: invalid entry number", optarg);
if (entry_number < 0)
errx(1, "%s: entry number cannot be less than zero", optarg);
entry->entry_number = entry_number;
if (argv[optind] == NULL)
errx(1, "missing ACL");
entry->acl = acl_from_text(argv[optind]);
if (entry->acl == NULL)
err(1, "%s", argv[optind]);
optind++;
entry->op = OP_ADD_ACL;
TAILQ_INSERT_TAIL(&entrylist, entry, next);
break;
case 'b':
entry = zmalloc(sizeof(struct sf_entry));
entry->op = OP_REMOVE_EXT;
TAILQ_INSERT_TAIL(&entrylist, entry, next);
break;
case 'd':
acl_type = ACL_TYPE_DEFAULT;
break;
case 'h':
h_flag = 1;
break;
case 'k':
entry = zmalloc(sizeof(struct sf_entry));
entry->op = OP_REMOVE_DEF;
TAILQ_INSERT_TAIL(&entrylist, entry, next);
break;
case 'm':
entry = zmalloc(sizeof(struct sf_entry));
entry->acl = acl_from_text(optarg);
if (entry->acl == NULL)
err(1, "%s", optarg);
entry->op = OP_MERGE_ACL;
TAILQ_INSERT_TAIL(&entrylist, entry, next);
break;
case 'n':
n_flag++;
break;
case 'x':
entry = zmalloc(sizeof(struct sf_entry));
entry_number = strtol(optarg, &end, 10);
if (end - optarg == (int)strlen(optarg)) {
if (entry_number < 0)
errx(1, "%s: entry number cannot be less than zero", optarg);
entry->entry_number = entry_number;
entry->op = OP_REMOVE_BY_NUMBER;
} else {
entry->acl = acl_from_text(optarg);
if (entry->acl == NULL)
err(1, "%s", optarg);
entry->op = OP_REMOVE_ACL;
}
TAILQ_INSERT_TAIL(&entrylist, entry, next);
break;
default:
usage();
break;
}
argc -= optind;
argv += optind;
if (n_flag == 0 && TAILQ_EMPTY(&entrylist))
usage();
/* take list of files from stdin */
if (argc == 0 || strcmp(argv[0], "-") == 0) {
if (have_stdin)
err(1, "cannot have more than one stdin");
have_stdin = 1;
bzero(&filename, sizeof(filename));
while (fgets(filename, (int)sizeof(filename), stdin)) {
/* remove the \n */
filename[strlen(filename) - 1] = '\0';
fn_dup = strdup(filename);
if (fn_dup == NULL)
err(1, "strdup() failed");
add_filename(fn_dup);
}
} else
for (i = 0; i < argc; i++)
add_filename(argv[i]);
/* cycle through each file */
TAILQ_FOREACH(file, &filelist, next) {
local_error = 0;
if (stat(file->filename, &sb) == -1) {
warn("%s: stat() failed", file->filename);
carried_error++;
continue;
}
if (acl_type == ACL_TYPE_DEFAULT && S_ISDIR(sb.st_mode) == 0) {
warnx("%s: default ACL may only be set on a directory",
file->filename);
carried_error++;
continue;
}
if (h_flag)
ret = lpathconf(file->filename, _PC_ACL_NFS4);
else
ret = pathconf(file->filename, _PC_ACL_NFS4);
if (ret > 0) {
if (acl_type == ACL_TYPE_DEFAULT) {
warnx("%s: there are no default entries "
"in NFSv4 ACLs", file->filename);
carried_error++;
continue;
}
acl_type = ACL_TYPE_NFS4;
} else if (ret == 0) {
if (acl_type == ACL_TYPE_NFS4)
acl_type = ACL_TYPE_ACCESS;
} else if (ret < 0 && errno != EINVAL) {
warn("%s: pathconf(..., _PC_ACL_NFS4) failed",
file->filename);
}
if (h_flag)
acl = acl_get_link_np(file->filename, acl_type);
else
acl = acl_get_file(file->filename, acl_type);
if (acl == NULL) {
if (h_flag)
warn("%s: acl_get_link_np() failed",
file->filename);
else
warn("%s: acl_get_file() failed",
file->filename);
carried_error++;
continue;
}
/* cycle through each option */
TAILQ_FOREACH(entry, &entrylist, next) {
if (local_error)
continue;
switch(entry->op) {
case OP_ADD_ACL:
local_error += add_acl(entry->acl,
entry->entry_number, &acl, file->filename);
break;
case OP_MERGE_ACL:
local_error += merge_acl(entry->acl, &acl,
file->filename);
need_mask = 1;
break;
case OP_REMOVE_EXT:
remove_ext(&acl, file->filename);
need_mask = 0;
break;
case OP_REMOVE_DEF:
if (acl_type == ACL_TYPE_NFS4) {
warnx("%s: there are no default entries in NFSv4 ACLs; "
"cannot remove", file->filename);
local_error++;
break;
}
if (acl_delete_def_file(file->filename) == -1) {
warn("%s: acl_delete_def_file() failed",
file->filename);
local_error++;
}
if (acl_type == ACL_TYPE_DEFAULT)
local_error += remove_default(&acl,
file->filename);
need_mask = 0;
break;
case OP_REMOVE_ACL:
local_error += remove_acl(entry->acl, &acl,
file->filename);
need_mask = 1;
break;
case OP_REMOVE_BY_NUMBER:
local_error += remove_by_number(entry->entry_number,
&acl, file->filename);
need_mask = 1;
break;
}
}
/* don't bother setting the ACL if something is broken */
if (local_error) {
carried_error++;
continue;
}
if (acl_type != ACL_TYPE_NFS4 && need_mask &&
set_acl_mask(&acl, file->filename) == -1) {
warnx("%s: failed to set ACL mask", file->filename);
carried_error++;
} else if (h_flag) {
if (acl_set_link_np(file->filename, acl_type,
acl) == -1) {
carried_error++;
warn("%s: acl_set_link_np() failed",
file->filename);
}
} else {
if (acl_set_file(file->filename, acl_type,
acl) == -1) {
carried_error++;
warn("%s: acl_set_file() failed",
file->filename);
}
}
acl_free(acl);
}
return (carried_error);
}