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Linux man pages : _llseek (2)
LLSEEK(2)		   Linux Programmer's Manual		     LLSEEK(2)

NAME

_llseek - reposition read/write file offset

SYNOPSIS

#include <unistd.h> #include <linux/unistd.h> _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, loff_t *, res, uint, wh); 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 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, respec- tively. 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. 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) Linux 1.2.9 1995-06-10 LLSEEK(2)