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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* Copyright (C) 2018 - David Oberhollenzer
*
* 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 <https://www.gnu.org/licenses/>.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include "logfile.h"
logfile_t *logfile_create(const char *ident, const char *name, int facility)
{
int dfd = AT_FDCWD;
logfile_t *file;
size_t size;
size = sizeof(*file) + 1;
if (ident != NULL)
size += strlen(ident);
file = calloc(1, size);
if (file == NULL) {
perror("calloc");
return NULL;
}
if (ident != NULL) {
strcpy(file->ident, ident);
if (mkdir(file->ident, 0750) != 0 && errno != EEXIST) {
perror(file->ident);
goto fail;
}
dfd = open(file->ident, O_DIRECTORY | O_RDONLY);
if (dfd < 0) {
perror(file->ident);
goto fail;
}
}
file->facility = facility;
file->fd = openat(dfd, name, O_WRONLY | O_CREAT, 0640);
if (file->fd < 0) {
perror(name);
goto fail;
}
if (lseek(file->fd, 0, SEEK_END))
goto fail;
if (dfd != AT_FDCWD)
close(dfd);
return file;
fail:
if (dfd != AT_FDCWD)
close(dfd);
free(file);
return NULL;
}
void logfile_destroy(logfile_t *file)
{
close(file->fd);
free(file);
}
void logfile_write(logfile_t *file, const char *format, ...)
{
va_list ap;
va_start(ap, format);
vdprintf(file->fd, format, ap);
va_end(ap);
fsync(file->fd);
}
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