/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2010-2012 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <errno.h> #include <stdlib.h> #include <unistd.h> #include "util.h" #include "label.h" #include "path-util.h" #include "dev-setup.h" int dev_setup(const char *prefix, uid_t uid, gid_t gid) { static const char symlinks[] = "-/proc/kcore\0" "/dev/core\0" "/proc/self/fd\0" "/dev/fd\0" "/proc/self/fd/0\0" "/dev/stdin\0" "/proc/self/fd/1\0" "/dev/stdout\0" "/proc/self/fd/2\0" "/dev/stderr\0"; const char *j, *k; int r; NULSTR_FOREACH_PAIR(j, k, symlinks) { _cleanup_free_ char *link_name = NULL; const char *n; if (j[0] == '-') { j++; if (access(j, F_OK) < 0) continue; } if (prefix) { link_name = prefix_root(prefix, k); if (!link_name) return -ENOMEM; n = link_name; } else n = k; r = symlink_label(j, n); if (r < 0) log_debug_errno(r, "Failed to symlink %s to %s: %m", j, n); if (uid != UID_INVALID || gid != GID_INVALID) if (lchown(n, uid, gid) < 0) log_debug_errno(errno, "Failed to chown %s: %m", n); } return 0; }