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/*
* power-manager
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file util.c
* @version 0.1
* @brief Utilities for Power manager
*
* This file includes logging, daemonize
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdarg.h>
#include <unistd.h>
#include <limits.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#ifdef ENABLE_DLOG_OUT
#define LOG_TAG "POWER_MANAGER"
#endif
#include "util.h"
/**
* @addtogroup POWER_MANAGER
* @{
*/
/**
* @brief logging function
*
* This is log wrapper
*
* @param[in] priority log pritority
* @param[in] fmt format string
*/
void pm_log(int priority, char *fmt, ...)
{
va_list ap;
char buf[NAME_MAX]; /* NAME_MAX is 255 */
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
#ifdef ENABLE_DLOG_OUT
switch (priority) {
case DLOG_DEBUG:
SLOGD("%s", buf);
break;
case DLOG_ERROR:
SLOGE("%s", buf);
break;
case DLOG_INFO:
SLOGI("%s", buf);
break;
default:
SLOGV("%s", buf);
break;
}
#else
syslog(priority, "%s", buf);
#endif
printf("\x1b[1;33;44m[PowerManager] %s\x1b[0m\n\n", buf);
}
/**
* @brief write the pid
*
* get a pid and write it to pidpath
*
* @param[in] pidpath pid file path
* @return 0 (always)
*/
int writepid(char *pidpath)
{
FILE *fp;
fp = fopen(pidpath, "w");
if (fp != NULL) {
fprintf(fp, "%d", getpid());
fclose(fp);
}
return 0;
}
/**
* @brief read the pid
*
* get a pid and write it to pidpath
*
* @param[in] pidpath pid file path
* @return pid : success, -1 : failed
*/
int readpid(char *pidpath)
{
FILE *fp;
int ret = -1;
fp = fopen(pidpath, "r");
if (fp != NULL) {
fscanf(fp, "%5d", &ret);
fclose(fp);
}
return ret;
}
/**
* @brief daemonize function
*
* fork the process, kill the parent process
* and replace all the standard fds to /dev/null.
*
* @return 0 : success, -1 : fork() error
*/
int daemonize(void)
{
pid_t pid;
pid = fork();
if (pid < 0)
return -1;
else if (pid != 0)
exit(0);
setsid();
chdir("/");
close(0);
close(1);
close(2);
open("/dev/null", O_RDONLY);
open("/dev/null", O_RDWR);
dup(1);
return 0;
}
/**
* @brief function to run a process
*
* fork the process, and run the other process if it is child.
*
* @return new process pid on success, -1 on error
*/
int exec_process(char *name)
{
int ret, pid;
int i;
if (name[0] == '\0')
return 0;
pid = fork();
switch (pid) {
case -1:
LOGERR("Fork error");
ret = -1;
break;
case 0:
for (i = 0; i < _NSIG; i++)
signal(i, SIG_DFL);
execlp(name, name, NULL);
LOGERR("execlp() error : %s\n", strerror(errno));
exit(-1);
break;
default:
ret = pid;
break;
}
return ret;
}
char *get_pkgname(char *exepath)
{
char *filename;
char pkgname[NAME_MAX];
filename = strrchr(exepath, '/');
if (filename == NULL)
filename = exepath;
else
filename = filename + 1;
snprintf(pkgname, NAME_MAX, "deb.com.samsung.%s", filename);
return strdup(pkgname);
}
/**
* @}
*/
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