NAME

_llseek - reposition read/write file offset

SYNOPSIS

#include <unistd.h>
#include <sys/types.h>
#include <linux/unistd.h>
#include <errno.h>

_syscall5(int, _llseek, unsigned int, fd, unsigned long, hi,
          unsigned long, lo, loff_t *, res, unsigned int, wh)

         /* Using syscall(2) may be preferable; see intro(2) */

int _llseek(unsigned int fd, unsigned long offset_high,
            unsigned long offset_low, loff_t *result,
            unsigned int whence);

DESCRIPTION

The _llseek() function repositions the offset of the open file associated with the file descriptor fd to (offset_high<<32) | offset_low bytes relative to the beginning of the file, the current position in the file, or the end of the file, depending on whether whence is SEEK_SET, SEEK_CUR, or SEEK_END, respectively. It returns the resulting file position in the argument result.

RETURN VALUE

Upon successful completion, _llseek() returns 0. Otherwise, a value of -1 is returned and errno is set to indicate the error.

ERRORS

EBADF

fd is not an open file descriptor.

EFAULT

Problem with copying results to user space.

EINVAL

whence is invalid.

CONFORMING TO

This function is Linux specific, and should not be used in programs intended to be portable.

SEE ALSO

lseek(2), lseek64(3)