/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2014 Zbigniew Jędrzejewski-Szmek 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 "dropin.h" #include "util.h" #include "mkdir.h" #include "fileio-label.h" int drop_in_file(const char *dir, const char *unit, unsigned level, const char *name, char **_p, char **_q) { _cleanup_free_ char *b = NULL; char *p, *q; char prefix[DECIMAL_STR_MAX(unsigned)]; assert(unit); assert(name); assert(_p); assert(_q); sprintf(prefix, "%u", level); b = xescape(name, "/."); if (!b) return -ENOMEM; if (!filename_is_safe(b)) return -EINVAL; p = strjoin(dir, "/", unit, ".d", NULL); if (!p) return -ENOMEM; q = strjoin(p, "/", prefix, "-", b, ".conf", NULL); if (!q) { free(p); return -ENOMEM; } *_p = p; *_q = q; return 0; } int write_drop_in(const char *dir, const char *unit, unsigned level, const char *name, const char *data) { _cleanup_free_ char *p = NULL, *q = NULL; int r; assert(dir); assert(unit); assert(name); assert(data); r = drop_in_file(dir, unit, level, name, &p, &q); if (r < 0) return r; mkdir_p(p, 0755); return write_string_file_atomic_label(q, data); } int write_drop_in_format(const char *dir, const char *unit, unsigned level, const char *name, const char *format, ...) { _cleanup_free_ char *p = NULL; va_list ap; int r; assert(dir); assert(unit); assert(name); assert(format); va_start(ap, format); r = vasprintf(&p, format, ap); va_end(ap); if (r < 0) return -ENOMEM; return write_drop_in(dir, unit, level, name, p); }