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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2014 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 <string.h>
#include <unistd.h>
#include "util.h"
#include "special.h"
#include "mkdir.h"
#include "unit-name.h"
#include "generator.h"
#include "path-util.h"
#include "dropin.h"
int generator_write_fsck_deps(
FILE *f,
const char *dest,
const char *what,
const char *where,
const char *fstype) {
assert(f);
assert(dest);
assert(what);
assert(where);
if (!is_device_path(what)) {
log_warning("Checking was requested for \"%s\", but it is not a device.", what);
return 0;
}
if (!isempty(fstype) && !streq(fstype, "auto")) {
int r;
r = fsck_exists(fstype);
if (r == -ENOENT) {
/* treat missing check as essentially OK */
log_debug_errno(r, "Checking was requested for %s, but fsck.%s does not exist: %m", what, fstype);
return 0;
} else if (r < 0) {
log_warning_errno(r, "Checking was requested for %s, but fsck.%s cannot be used: %m", what, fstype);
return r;
}
}
if (streq(where, "/")) {
char *lnk;
lnk = strappenda(dest, "/" SPECIAL_LOCAL_FS_TARGET ".wants/systemd-fsck-root.service");
mkdir_parents(lnk, 0755);
if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-fsck-root.service", lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
} else {
_cleanup_free_ char *fsck = NULL;
fsck = unit_name_from_path_instance("systemd-fsck", what, ".service");
if (!fsck)
return log_oom();
fprintf(f,
"RequiresOverridable=%s\n"
"After=%s\n",
fsck,
fsck);
}
return 0;
}
int generator_write_timeouts(const char *dir, const char *what, const char *where,
const char *opts, char **filtered) {
/* Allow configuration how long we wait for a device that
* backs a mount point to show up. This is useful to support
* endless device timeouts for devices that show up only after
* user input, like crypto devices. */
_cleanup_free_ char *node = NULL, *unit = NULL, *t = NULL;
char *start, *timeout;
usec_t u;
int r;
size_t len;
if ((start = mount_test_option(opts, "comment=systemd.device-timeout")))
timeout = start + 31;
else if ((start = mount_test_option(opts, "x-systemd.device-timeout")))
timeout = start + 25;
else {
if (filtered) {
*filtered = strdup(opts ?: "");
if (!*filtered)
return log_oom();
}
return 0;
}
len = strcspn(timeout, ",;" WHITESPACE);
t = strndup(timeout, len);
if (!t)
return -ENOMEM;
if (filtered) {
char *prefix, *postfix;
prefix = strndupa(opts, start - opts - (start != opts));
postfix = timeout + len + (start == opts && timeout[len] != '\0');
*filtered = strjoin(prefix, *postfix ? postfix : NULL, NULL);
if (!*filtered)
return log_oom();
}
r = parse_sec(t, &u);
if (r < 0) {
log_warning("Failed to parse timeout for %s, ignoring: %s",
where, timeout);
return 0;
}
node = fstab_node_to_udev_node(what);
if (!node)
return log_oom();
unit = unit_name_from_path(node, ".device");
if (!unit)
return -ENOMEM;
return write_drop_in_format(dir, unit, 50, "device-timeout",
"# Automatically generated by %s\n\n"
"[Unit]\nJobTimeoutSec=" USEC_FMT,
program_invocation_short_name,
u / USEC_PER_SEC);
}
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