326 lines
8.5 KiB
C
326 lines
8.5 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 <errno.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 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 void
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usage(void)
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{
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fprintf(stderr, "usage: setfacl [-bdhkn] [-a position entries] "
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"[-m entries] [-M file] [-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;
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acl_type_t acl_type;
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char filename[PATH_MAX];
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int local_error, carried_error, ch, i, entry_number, ret;
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int h_flag;
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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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char *end;
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struct stat sb;
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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:a: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, "%s: get_acl_from_file() failed", 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 '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 'a':
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entry = zmalloc(sizeof(struct sf_entry));
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entry_number = strtol(optarg, &end, 10);
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if (end - optarg != (int)strlen(optarg))
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errx(1, "%s: invalid entry number", optarg);
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if (entry_number < 0)
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errx(1, "%s: entry number cannot be less than zero", optarg);
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entry->entry_number = entry_number;
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if (argv[optind] == NULL)
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errx(1, "missing ACL");
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entry->acl = acl_from_text(argv[optind]);
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if (entry->acl == NULL)
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err(1, "%s", argv[optind]);
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optind++;
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entry->op = OP_ADD_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_number = strtol(optarg, &end, 10);
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if (end - optarg == (int)strlen(optarg)) {
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if (entry_number < 0)
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errx(1, "%s: entry number cannot be less than zero", optarg);
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entry->entry_number = entry_number;
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entry->op = OP_REMOVE_BY_NUMBER;
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} else {
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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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}
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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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local_error = 0;
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if (stat(file->filename, &sb) == -1) {
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warn("%s: stat() failed", file->filename);
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continue;
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}
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if (acl_type == ACL_TYPE_DEFAULT && S_ISDIR(sb.st_mode) == 0) {
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warnx("%s: default ACL may only be set on a directory",
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file->filename);
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continue;
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}
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if (h_flag)
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ret = lpathconf(file->filename, _PC_ACL_NFS4);
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else
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ret = pathconf(file->filename, _PC_ACL_NFS4);
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if (ret > 0) {
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if (acl_type == ACL_TYPE_DEFAULT) {
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warnx("%s: there are no default entries "
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"in NFSv4 ACLs", file->filename);
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continue;
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}
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acl_type = ACL_TYPE_NFS4;
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} else if (ret == 0) {
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if (acl_type == ACL_TYPE_NFS4)
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acl_type = ACL_TYPE_ACCESS;
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} else if (ret < 0 && errno != EINVAL) {
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warn("%s: pathconf(..., _PC_ACL_NFS4) failed",
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file->filename);
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}
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if (h_flag)
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acl = acl_get_link_np(file->filename, acl_type);
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else
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acl = acl_get_file(file->filename, acl_type);
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if (acl == NULL) {
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if (h_flag)
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warn("%s: acl_get_link_np() failed",
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file->filename);
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else
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warn("%s: acl_get_file() failed",
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file->filename);
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continue;
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}
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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_ADD_ACL:
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local_error += add_acl(entry->acl,
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entry->entry_number, &acl, file->filename);
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break;
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case OP_MERGE_ACL:
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local_error += merge_acl(entry->acl, &acl,
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file->filename);
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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, file->filename);
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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_type == ACL_TYPE_NFS4) {
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warnx("%s: there are no default entries in NFSv4 ACLs; "
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"cannot remove", file->filename);
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local_error++;
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break;
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}
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if (acl_delete_def_file(file->filename) == -1) {
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warn("%s: acl_delete_def_file() failed",
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file->filename);
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local_error++;
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}
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if (acl_type == ACL_TYPE_DEFAULT)
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local_error += remove_default(&acl,
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file->filename);
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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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file->filename);
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need_mask = 1;
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break;
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case OP_REMOVE_BY_NUMBER:
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local_error += remove_by_number(entry->entry_number,
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&acl, file->filename);
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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_NFS4 && need_mask &&
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set_acl_mask(&acl, file->filename) == -1) {
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warnx("%s: failed to set ACL mask", 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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acl) == -1) {
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carried_error++;
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warn("%s: acl_set_link_np() failed",
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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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acl) == -1) {
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carried_error++;
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warn("%s: acl_set_file() failed",
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file->filename);
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}
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}
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acl_free(acl);
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}
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return (carried_error);
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}
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