103 lines
2.6 KiB
C
103 lines
2.6 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 2014 Zbigniew Jędrzejewski-Szmek
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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 "dropin.h"
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#include "util.h"
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#include "mkdir.h"
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#include "fileio-label.h"
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int drop_in_file(const char *dir, const char *unit, unsigned level,
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const char *name, char **_p, char **_q) {
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_cleanup_free_ char *b = NULL;
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char *p, *q;
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char prefix[DECIMAL_STR_MAX(unsigned)];
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assert(unit);
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assert(name);
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assert(_p);
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assert(_q);
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sprintf(prefix, "%u", level);
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b = xescape(name, "/.");
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if (!b)
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return -ENOMEM;
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if (!filename_is_safe(b))
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return -EINVAL;
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p = strjoin(dir, "/", unit, ".d", NULL);
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if (!p)
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return -ENOMEM;
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q = strjoin(p, "/", prefix, "-", b, ".conf", NULL);
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if (!q) {
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free(p);
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return -ENOMEM;
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}
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*_p = p;
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*_q = q;
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return 0;
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}
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int write_drop_in(const char *dir, const char *unit, unsigned level,
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const char *name, const char *data) {
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_cleanup_free_ char *p = NULL, *q = NULL;
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int r;
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assert(dir);
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assert(unit);
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assert(name);
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assert(data);
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r = drop_in_file(dir, unit, level, name, &p, &q);
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if (r < 0)
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return r;
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mkdir_p(p, 0755);
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return write_string_file_atomic_label(q, data);
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}
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int write_drop_in_format(const char *dir, const char *unit, unsigned level,
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const char *name, const char *format, ...) {
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_cleanup_free_ char *p = NULL;
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va_list ap;
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int r;
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assert(dir);
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assert(unit);
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assert(name);
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assert(format);
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va_start(ap, format);
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r = vasprintf(&p, format, ap);
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va_end(ap);
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if (r < 0)
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return -ENOMEM;
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return write_drop_in(dir, unit, level, name, p);
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}
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