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/*
* Copyright Red Hat
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include "syscalls.h"
#include <sys/prctl.h>
#include <unistd.h>
#include "permassert.h"
/**********************************************************************/
int logging_read(int fd,
void *buf,
size_t count,
const char *context,
ssize_t *bytes_read_ptr)
{
int result;
do {
result = check_io_errors(read(fd, buf, count),
__func__,
context,
bytes_read_ptr);
} while (result == EINTR);
return result;
}
/**********************************************************************/
static int logging_pread_interruptible(int fd,
void *buf,
size_t count,
off_t offset,
const char *context,
ssize_t *bytes_read_ptr)
{
return check_io_errors(pread(fd, buf, count, offset),
__func__,
context,
bytes_read_ptr);
}
/**********************************************************************/
int logging_pread(int fd,
void *buf,
size_t count,
off_t offset,
const char *context,
ssize_t *bytes_read_ptr)
{
int result;
do {
result = logging_pread_interruptible(fd, buf, count, offset,
context, bytes_read_ptr);
} while (result == EINTR);
return result;
}
/**********************************************************************/
int logging_write(int fd,
const void *buf,
size_t count,
const char *context,
ssize_t *bytes_written_ptr)
{
int result;
do {
result = check_io_errors(write(fd, buf, count),
__func__,
context,
bytes_written_ptr);
} while (result == EINTR);
return result;
}
/**********************************************************************/
static int logging_pwrite_interruptible(int fd,
const void *buf,
size_t count,
off_t offset,
const char *context,
ssize_t *bytes_written_ptr)
{
return check_io_errors(pwrite(fd, buf, count, offset),
__func__,
context,
bytes_written_ptr);
}
/**********************************************************************/
int logging_pwrite(int fd,
const void *buf,
size_t count,
off_t offset,
const char *context,
ssize_t *bytes_written_ptr)
{
int result;
do {
result = logging_pwrite_interruptible(fd, buf, count, offset,
context,
bytes_written_ptr);
} while (result == EINTR);
return result;
}
/**********************************************************************/
int logging_close(int fd, const char *context)
{
return check_system_call(close(fd), __func__, context);
}
/**********************************************************************/
int process_control(int option,
unsigned long arg2,
unsigned long arg3,
unsigned long arg4,
unsigned long arg5)
{
int result = prctl(option, arg2, arg3, arg4, arg5);
VDO_ASSERT_LOG_ONLY(result >= 0,
"option: %d, arg2: %lu, arg3: %lu, arg4: %lu, arg5: %lu",
option,
arg2,
arg3,
arg4,
arg5);
return errno;
}
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