b5ea8f4cbc
Before this fix the -h flag was ignored (i.e. setfacl always set the ACL on the file pointed to by the symbolic link even when the -h flag requested that the ACL be set on the symbolic link itself).
279 lines
7.0 KiB
C
279 lines
7.0 KiB
C
/*-
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* Copyright (c) 2001 Chris D. Faulhaber
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/acl.h>
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#include <sys/queue.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "setfacl.h"
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static void add_filename(const char *filename);
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static acl_t *get_file_acls(const char *filename);
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static void usage(void);
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static void
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add_filename(const char *filename)
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{
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struct sf_file *file;
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if (strlen(filename) > PATH_MAX - 1) {
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warn("illegal filename");
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return;
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}
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file = zmalloc(sizeof(struct sf_file));
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file->filename = filename;
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TAILQ_INSERT_TAIL(&filelist, file, next);
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}
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static acl_t *
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get_file_acls(const char *filename)
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{
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acl_t *acl;
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struct stat sb;
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if (stat(filename, &sb) == -1) {
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warn("stat() of %s failed", filename);
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return (NULL);
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}
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acl = zmalloc(sizeof(acl_t) * 2);
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if (h_flag)
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acl[ACCESS_ACL] = acl_get_link_np(filename, ACL_TYPE_ACCESS);
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else
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acl[ACCESS_ACL] = acl_get_file(filename, ACL_TYPE_ACCESS);
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if (acl[ACCESS_ACL] == NULL)
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err(1, "acl_get_file() failed");
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if (S_ISDIR(sb.st_mode)) {
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if (h_flag)
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acl[DEFAULT_ACL] = acl_get_link_np(filename,
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ACL_TYPE_DEFAULT);
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else
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acl[DEFAULT_ACL] = acl_get_file(filename,
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ACL_TYPE_DEFAULT);
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if (acl[DEFAULT_ACL] == NULL)
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err(1, "acl_get_file() failed");
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} else
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acl[DEFAULT_ACL] = NULL;
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return (acl);
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}
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static void
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usage(void)
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{
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fprintf(stderr, "usage: setfacl [-bdhkn] [-m entries] [-M file] "
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"[-x entries] [-X file] [file ...]\n");
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exit(1);
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}
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int
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main(int argc, char *argv[])
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{
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acl_t *acl, final_acl;
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char filename[PATH_MAX];
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int local_error, carried_error, ch, i;
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struct sf_file *file;
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struct sf_entry *entry;
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const char *fn_dup;
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acl_type = ACL_TYPE_ACCESS;
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carried_error = local_error = 0;
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h_flag = have_mask = have_stdin = n_flag = need_mask = 0;
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TAILQ_INIT(&entrylist);
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TAILQ_INIT(&filelist);
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while ((ch = getopt(argc, argv, "M:X:bdhkm:nx:")) != -1)
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switch(ch) {
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case 'M':
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entry = zmalloc(sizeof(struct sf_entry));
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entry->acl = get_acl_from_file(optarg);
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if (entry->acl == NULL)
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err(1, "get_acl_from_file() failed");
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entry->op = OP_MERGE_ACL;
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TAILQ_INSERT_TAIL(&entrylist, entry, next);
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break;
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case 'X':
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entry = zmalloc(sizeof(struct sf_entry));
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entry->acl = get_acl_from_file(optarg);
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entry->op = OP_REMOVE_ACL;
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TAILQ_INSERT_TAIL(&entrylist, entry, next);
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break;
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case 'b':
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entry = zmalloc(sizeof(struct sf_entry));
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entry->op = OP_REMOVE_EXT;
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TAILQ_INSERT_TAIL(&entrylist, entry, next);
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break;
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case 'd':
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acl_type = ACL_TYPE_DEFAULT;
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break;
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case 'h':
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h_flag = 1;
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break;
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case 'k':
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entry = zmalloc(sizeof(struct sf_entry));
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entry->op = OP_REMOVE_DEF;
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TAILQ_INSERT_TAIL(&entrylist, entry, next);
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break;
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case 'm':
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entry = zmalloc(sizeof(struct sf_entry));
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entry->acl = acl_from_text(optarg);
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if (entry->acl == NULL)
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err(1, "%s", optarg);
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entry->op = OP_MERGE_ACL;
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TAILQ_INSERT_TAIL(&entrylist, entry, next);
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break;
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case 'n':
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n_flag++;
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break;
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case 'x':
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entry = zmalloc(sizeof(struct sf_entry));
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entry->acl = acl_from_text(optarg);
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if (entry->acl == NULL)
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err(1, "%s", optarg);
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entry->op = OP_REMOVE_ACL;
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TAILQ_INSERT_TAIL(&entrylist, entry, next);
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break;
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default:
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usage();
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break;
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}
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argc -= optind;
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argv += optind;
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if (n_flag == 0 && TAILQ_EMPTY(&entrylist))
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usage();
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/* take list of files from stdin */
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if (argc == 0 || strcmp(argv[0], "-") == 0) {
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if (have_stdin)
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err(1, "cannot have more than one stdin");
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have_stdin = 1;
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bzero(&filename, sizeof(filename));
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while (fgets(filename, (int)sizeof(filename), stdin)) {
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/* remove the \n */
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filename[strlen(filename) - 1] = '\0';
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fn_dup = strdup(filename);
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if (fn_dup == NULL)
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err(1, "strdup() failed");
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add_filename(fn_dup);
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}
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} else
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for (i = 0; i < argc; i++)
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add_filename(argv[i]);
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/* cycle through each file */
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TAILQ_FOREACH(file, &filelist, next) {
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/* get our initial access and default ACL's */
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acl = get_file_acls(file->filename);
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if (acl == NULL)
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continue;
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if ((acl_type == ACL_TYPE_DEFAULT) && !acl[1]) {
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warnx("Default ACL not valid for %s", file->filename);
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continue;
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}
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local_error = 0;
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/* cycle through each option */
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TAILQ_FOREACH(entry, &entrylist, next) {
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if (local_error)
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continue;
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switch(entry->op) {
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case OP_MERGE_ACL:
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local_error += merge_acl(entry->acl, acl);
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need_mask = 1;
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break;
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case OP_REMOVE_EXT:
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remove_ext(acl);
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need_mask = 0;
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break;
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case OP_REMOVE_DEF:
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if (acl_delete_def_file(file->filename) == -1) {
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warn("acl_delete_def_file() failed");
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local_error++;
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}
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local_error += remove_default(acl);
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need_mask = 0;
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break;
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case OP_REMOVE_ACL:
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local_error += remove_acl(entry->acl, acl);
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need_mask = 1;
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break;
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}
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}
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/* don't bother setting the ACL if something is broken */
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if (local_error) {
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carried_error++;
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continue;
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}
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if (acl_type == ACL_TYPE_ACCESS)
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final_acl = acl[ACCESS_ACL];
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else
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final_acl = acl[DEFAULT_ACL];
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if (need_mask && (set_acl_mask(&final_acl) == -1)) {
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warnx("failed to set ACL mask on %s", file->filename);
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carried_error++;
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} else if (h_flag) {
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if (acl_set_link_np(file->filename, acl_type,
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final_acl) == -1) {
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carried_error++;
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warn("acl_set_link_np() failed for %s",
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file->filename);
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}
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} else {
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if (acl_set_file(file->filename, acl_type,
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final_acl) == -1) {
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carried_error++;
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warn("acl_set_file() failed for %s",
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file->filename);
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}
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}
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acl_free(acl[ACCESS_ACL]);
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acl_free(acl[DEFAULT_ACL]);
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free(acl);
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}
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return (carried_error);
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}
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