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110 lines
2.3 KiB
C
110 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later */
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/*
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* Copyright (C) 2018 - David Oberhollenzer
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stddef.h>
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#include <dirent.h>
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#include <string.h>
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#include <errno.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include "service.h"
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int svcscan(const char *directory, service_list_t *list, int flags)
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{
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int i, dfd, type, ret = 0;
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struct dirent *ent;
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const char *ptr;
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service_t *svc;
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struct stat sb;
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DIR *dir;
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for (i = 0; i < TGT_MAX; ++i)
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list->targets[i] = NULL;
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dir = opendir(directory);
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if (dir == NULL) {
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perror(directory);
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return -1;
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}
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dfd = dirfd(dir);
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if (dfd < 0) {
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perror(directory);
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closedir(dir);
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return -1;
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}
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for (;;) {
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errno = 0;
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ent = readdir(dir);
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if (ent == NULL) {
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if (errno != 0) {
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perror(directory);
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ret = -1;
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}
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break;
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}
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for (ptr = ent->d_name; isalnum(*ptr) || *ptr == '_'; ++ptr)
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;
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if (*ptr != '\0' && *ptr != '@')
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continue;
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if (fstatat(dfd, ent->d_name, &sb, AT_SYMLINK_NOFOLLOW)) {
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fprintf(stderr, "stat %s/%s: %s\n",
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directory, ent->d_name, strerror(errno));
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ret = -1;
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continue;
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}
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type = (sb.st_mode & S_IFMT);
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if (type != S_IFREG && type != S_IFLNK)
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continue;
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svc = rdsvc(dfd, ent->d_name, flags);
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if (svc == NULL) {
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ret = -1;
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continue;
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}
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svc->next = list->targets[svc->target];
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list->targets[svc->target] = svc;
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}
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for (i = 0; i < TGT_MAX; ++i) {
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if (list->targets[i] == NULL)
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continue;
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errno = 0;
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list->targets[i] = svc_tsort(list->targets[i]);
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if (errno != 0) {
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fprintf(stderr, "sorting services read from %s: %s\n",
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directory, strerror(errno));
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}
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}
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closedir(dir);
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return ret;
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}
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