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/*
ctdb logging code
Copyright (C) Andrew Tridgell 2008
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; either version 3 of the License, or
(at your option) any later version.
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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "../include/ctdb_client.h"
#include "../include/ctdb_private.h"
#include "system/time.h"
#include "system/filesys.h"
#include "lib/util/time_basic.h"
#define CTDB_LOG_FILE_PREFIX "file"
struct file_state {
int fd;
};
/*
log file logging function
*/
static void ctdb_log_to_file(void *private_ptr, int dbglevel, const char *s)
{
struct file_state *state = talloc_get_type(
private_ptr, struct file_state);
struct timeval tv;
struct timeval_buf tvbuf;
char *s2 = NULL;
int ret;
GetTimeOfDay(&tv);
timeval_str_buf(&tv, false, true, &tvbuf);
ret = asprintf(&s2, "%s [%s%5u]: %s\n",
tvbuf.buf,
debug_extra, (unsigned)getpid(), s);
if (ret == -1) {
const char *errstr = "asprintf failed\n";
sys_write(state->fd, errstr, strlen(errstr));
return;
}
if (s2) {
sys_write(state->fd, s2, strlen(s2));
free(s2);
}
}
static int file_state_destructor(struct file_state *state)
{
close(state->fd);
state->fd = -1;
return 0;
}
static int ctdb_log_setup_file(TALLOC_CTX *mem_ctx,
const char *logging,
const char *app_name)
{
struct file_state *state;
const char *logfile;
size_t l;
l = strlen(CTDB_LOG_FILE_PREFIX);
if (logging[l] != ':') {
return EINVAL;
}
logfile = &logging[0] + l + 1;
state = talloc_zero(mem_ctx, struct file_state);
if (state == NULL) {
return ENOMEM;
}
if (logfile == NULL || strcmp(logfile, "-") == 0) {
int ret;
state->fd = 1;
/* also catch stderr of subcommands to stdout */
ret = dup2(1, 2);
if (ret == -1) {
return errno;
}
} else {
state->fd = open(logfile, O_WRONLY|O_APPEND|O_CREAT, 0666);
if (state->fd == -1) {
return errno;
}
}
talloc_set_destructor(state, file_state_destructor);
debug_set_callback(state, ctdb_log_to_file);
return 0;
}
void ctdb_log_init_file(void)
{
ctdb_log_register_backend(CTDB_LOG_FILE_PREFIX, ctdb_log_setup_file);
}
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