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