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CentOS 7.0 - man page for _llseek (centos section 2)

LLSEEK(2)						     Linux Programmer's Manual							 LLSEEK(2)

NAME
_llseek - reposition read/write file offset
SYNOPSIS
#include <sys/types.h> #include <unistd.h> int _llseek(unsigned int fd, unsigned long offset_high, unsigned long offset_low, loff_t *result, unsigned int whence); Note: There is no glibc wrapper for this system call; see NOTES.
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.
NOTES
Glibc does not provide a wrapper for this system call; call it using syscall(2).
SEE ALSO
lseek(2), lseek64(3)
COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2012-07-13 LLSEEK(2)
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