85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2010-2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <unistd.h>
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#include "dev-setup.h"
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#include "log.h"
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#include "macro.h"
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#include "util.h"
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#include "label.h"
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static int symlink_and_label(const char *old_path, const char *new_path) {
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int r;
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assert(old_path);
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assert(new_path);
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r = mac_selinux_create_file_prepare(new_path, S_IFLNK);
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if (r < 0)
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return r;
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if (symlink(old_path, new_path) < 0)
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r = -errno;
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mac_selinux_create_file_clear();
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return r;
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}
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int dev_setup(const char *prefix) {
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const char *j, *k;
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static const char symlinks[] =
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"-/proc/kcore\0" "/dev/core\0"
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"/proc/self/fd\0" "/dev/fd\0"
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"/proc/self/fd/0\0" "/dev/stdin\0"
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"/proc/self/fd/1\0" "/dev/stdout\0"
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"/proc/self/fd/2\0" "/dev/stderr\0";
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NULSTR_FOREACH_PAIR(j, k, symlinks) {
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if (j[0] == '-') {
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j++;
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if (access(j, F_OK) < 0)
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continue;
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}
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if (prefix) {
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_cleanup_free_ char *link_name = NULL;
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link_name = strjoin(prefix, "/", k, NULL);
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if (!link_name)
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return -ENOMEM;
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symlink_and_label(j, link_name);
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} else
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symlink_and_label(j, k);
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}
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return 0;
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}
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