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/*
* This file is part of libsamsung-ipc.
*
* Copyright (C) 2013 Paul Kocialkowski <contact@paulk.fr>
*
* libsamsung-ipc 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 2 of the License, or
* (at your option) any later version.
*
* libsamsung-ipc 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 libsamsung-ipc. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <fcntl.h>
#include <ctype.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <asm/types.h>
#include <linux/netlink.h>
#include <net/if.h>
#include "util.h"
void *file_data_read(char *path, int size, int chunk)
{
void *data = NULL;
int fd = -1;
unsigned char *p;
int count;
int rc;
if (path == NULL || size <= 0 || chunk <= 0)
return NULL;
fd = open(path, O_RDONLY);
if (fd < 0)
goto error;
data = malloc(size);
memset(data, 0, size);
p = (unsigned char *) data;
count = 0;
while (count < size) {
rc = read(fd, p, size - count > chunk ? chunk : size - count);
if (rc < 0)
goto error;
p += rc;
count += rc;
}
goto complete;
error:
if (data != NULL)
free(data);
data = NULL;
complete:
if (fd >= 0)
close(fd);
return data;
}
int network_iface_up(char *iface, int domain, int type)
{
struct ifreq ifr;
int fd = -1;
int rc;
if (iface == NULL)
return -1;
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, iface, IFNAMSIZ);
fd = socket(domain, type, 0);
if (fd < 0)
goto error;
rc = ioctl(fd, SIOCGIFFLAGS, &ifr);
if (rc < 0)
goto error;
ifr.ifr_flags |= IFF_UP;
rc = ioctl(fd, SIOCSIFFLAGS, &ifr);
if (rc < 0)
goto error;
rc = 0;
goto complete;
error:
rc = -1;
complete:
if (fd >= 0)
close(fd);
return rc;
}
int network_iface_down(char *iface, int domain, int type)
{
struct ifreq ifr;
int fd = -1;
int rc;
if (iface == NULL)
return -1;
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, iface, IFNAMSIZ);
fd = socket(domain, type, 0);
if (fd < 0)
goto error;
rc = ioctl(fd, SIOCGIFFLAGS, &ifr);
if (rc < 0)
goto error;
ifr.ifr_flags = (ifr.ifr_flags & (~IFF_UP));
rc = ioctl(fd, SIOCSIFFLAGS, &ifr);
if (rc < 0)
goto error;
rc = 0;
goto complete;
error:
rc = -1;
complete:
if (fd >= 0)
close(fd);
return rc;
}
int sysfs_value_read(char *path)
{
char buffer[100];
int value;
int fd = -1;
int rc;
if (path == NULL)
return -1;
fd = open(path, O_RDONLY);
if (fd < 0)
goto error;
rc = read(fd, &buffer, sizeof(buffer));
if (rc <= 0)
goto error;
value = atoi(buffer);
goto complete;
error:
value = -1;
complete:
if (fd >= 0)
close(fd);
return value;
}
int sysfs_value_write(char *path, int value)
{
char buffer[100];
int fd = -1;
int rc;
if (path == NULL)
return -1;
fd = open(path, O_WRONLY);
if (fd < 0)
goto error;
snprintf((char *) &buffer, sizeof(buffer), "%d\n", value);
rc = write(fd, buffer, strlen(buffer));
if (rc < (int) strlen(buffer))
goto error;
rc = 0;
goto complete;
error:
rc = -1;
complete:
if (fd >= 0)
close(fd);
return rc;
}
int sysfs_string_read(char *path, char *buffer, int length)
{
int fd = -1;
int rc;
if (path == NULL || buffer == NULL || length <= 0)
return -1;
fd = open(path, O_RDONLY);
if (fd < 0)
goto error;
rc = read(fd, buffer, length);
if (rc <= 0)
goto error;
rc = 0;
goto complete;
error:
rc = -1;
complete:
if (fd >= 0)
close(fd);
return rc;
}
int sysfs_string_write(char *path, char *buffer, int length)
{
int fd = -1;
int rc;
if (path == NULL || buffer == NULL || length <= 0)
return -1;
fd = open(path, O_WRONLY);
if (fd < 0)
goto error;
rc = write(fd, buffer, length);
if (rc <= 0)
goto error;
rc = 0;
goto complete;
error:
rc = -1;
complete:
if (fd >= 0)
close(fd);
return rc;
}
// vim:ts=4:sw=4:expandtab
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