summaryrefslogtreecommitdiff
path: root/src/shared/dropin.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/shared/dropin.c')
-rw-r--r--src/shared/dropin.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/src/shared/dropin.c b/src/shared/dropin.c
new file mode 100644
index 0000000000..7774236f71
--- /dev/null
+++ b/src/shared/dropin.c
@@ -0,0 +1,98 @@
+/*-*- 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,
+ const char *name, char **_p, char **_q) {
+
+ _cleanup_free_ char *b = NULL;
+ char *p, *q;
+
+ assert(unit);
+ assert(name);
+ assert(_p);
+ assert(_q);
+
+ 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, "/90-", 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,
+ 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, 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,
+ 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, name, p);
+}