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/*
* udeveventrecorder.c
*
* Copyright (C) 2004-2005 SuSE Linux Products GmbH
* Author:
* Olaf Hering <olh@suse.de>
*
* 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 <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "udev.h"
#include "udev_version.h"
#include "udev_utils.h"
#include "logging.h"
#define BUFSIZE 12345
#define FNSIZE 123
static int udev_log = 0;
#ifdef USE_LOG
void log_message (int priority, const char *format, ...)
{
va_list args;
if (priority > udev_log)
return;
va_start(args, format);
vsyslog(priority, format, args);
va_end(args);
}
#endif
int main(int argc, char **argv, char **envp)
{
int fd, i;
unsigned long seq;
char **ep = envp;
char *buf, *p, *a;
struct stat sb;
const char *env;
if (stat("/events", &sb) || !(S_ISDIR(sb.st_mode)))
return 0;
env = getenv("UDEV_LOG");
if (env)
udev_log = log_priority(env);
logging_init("udeveventrecorder");
dbg("version %s", UDEV_VERSION);
p = getenv("SEQNUM");
a = getenv("ACTION");
buf = malloc(FNSIZE);
if (!(buf && a && argv[1]))
goto error;
if (p)
seq = strtoul(p, NULL, 0);
else
seq = 0;
snprintf(buf, FNSIZE, "/events/debug.%05lu.%s.%s.%u", seq, argv[1], a ? a : "", getpid());
if ((fd = open(buf, O_CREAT | O_WRONLY | O_TRUNC, 0644)) < 0) {
err("error creating '%s'", buf);
goto error;
}
free(buf);
p = malloc(BUFSIZE);
buf = p;
buf += snprintf(buf, p + BUFSIZE - buf, "set --");
for (i = 1; i < argc; ++i) {
buf += snprintf(buf, p + BUFSIZE - buf, " %s", argv[i]);
if (buf > p + BUFSIZE)
goto full;
}
buf += snprintf(buf, p + BUFSIZE - buf, "\n");
if (buf > p + BUFSIZE)
goto full;
while (*ep) {
unsigned char *t;
t = memchr(*ep, '=', strlen(*ep));
if (t) {
*t = '\0';
t++;
buf += snprintf(buf, p + BUFSIZE - buf, "%s='%s'\n", *ep, t);
--t;
*t = '=';
}
ep++;
if (buf > p + BUFSIZE)
break;
}
full:
buf = p;
write(fd, buf, strlen(buf));
close(fd);
free(buf);
return 0;
error:
fprintf(stderr, "record enviroment to /events, to be called from udev context\n");
return 1;
}
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