mirror of
https://github.com/systemd/systemd.git
synced 2024-10-28 11:55:44 +03:00
bfd1294892
Rules can be precompiled and stored on disk for initramfs, to avoid parsing the rules with every event again and again. Also the OWNER and GROUP names are already resolved to numerical values in the compiled rules. This flag is used for the upcoming move of the rules parsing into udevd: If the real root is mounted udevd is started and parses the rules only once. The event processes will inherit the already parsed rules from the daemon, so we want to ignore any precompiled rules and use the real rules files and watch the filesystem for changes to reload the rules automatically. Signed-off-by: Kay Sievers <kay.sievers@suse.de>
98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
/*
|
|
* udevrulescompile.c - store already parsed config on disk
|
|
*
|
|
* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation version 2 of the License.
|
|
*
|
|
* This program 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
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
|
|
#include "udev_libc_wrapper.h"
|
|
#include "udev_sysfs.h"
|
|
#include "udev.h"
|
|
#include "udev_version.h"
|
|
#include "logging.h"
|
|
#include "udev_rules.h"
|
|
#include "udev_utils.h"
|
|
#include "list.h"
|
|
|
|
#ifdef USE_LOG
|
|
void log_message(int priority, const char *format, ...)
|
|
{
|
|
va_list args;
|
|
|
|
if (priority > udev_log_priority)
|
|
return;
|
|
|
|
va_start(args, format);
|
|
vsyslog(priority, format, args);
|
|
va_end(args);
|
|
}
|
|
#endif
|
|
|
|
int main(int argc, char *argv[], char *envp[])
|
|
{
|
|
struct udev_rules rules;
|
|
FILE *f;
|
|
char comp[PATH_SIZE];
|
|
char comp_tmp[PATH_SIZE];
|
|
int retval = 0;
|
|
|
|
logging_init("udevrulescompile");
|
|
udev_init_config();
|
|
dbg("version %s", UDEV_VERSION);
|
|
|
|
strlcpy(comp, udev_rules_filename, sizeof(comp));
|
|
strlcat(comp, ".compiled", sizeof(comp));
|
|
strlcpy(comp_tmp, comp, sizeof(comp_tmp));
|
|
strlcat(comp_tmp, ".tmp", sizeof(comp_tmp));
|
|
|
|
/* remove old version, otherwise we would read it instead of the real rules */
|
|
unlink(comp);
|
|
unlink(comp_tmp);
|
|
|
|
udev_rules_init(&rules, 0, 1);
|
|
|
|
f = fopen(comp_tmp, "w");
|
|
if (f == NULL) {
|
|
err("unable to create db file '%s'", comp_tmp);
|
|
unlink(comp_tmp);
|
|
retval = 1;
|
|
goto exit;
|
|
}
|
|
|
|
dbg("storing compiled rules in '%s' size=%zi", comp_tmp, rules.bufsize);
|
|
fwrite(rules.buf, rules.bufsize, 1, f);
|
|
fclose(f);
|
|
|
|
dbg("activating compiled rules in '%s'", comp);
|
|
if (rename(comp_tmp, comp) != 0) {
|
|
err("unable to write file");
|
|
unlink(comp);
|
|
unlink(comp_tmp);
|
|
retval = 2;
|
|
}
|
|
|
|
exit:
|
|
logging_close();
|
|
return retval;
|
|
}
|