Manpage of LLSEEK

LLSEEK

Section: Linux Programmer's Manual (2)
Updated: 2016-03-15
Index
 

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 description associated with the file descriptor fdto (offset_high<<32) | offset_lowbytes relative to the beginning of the file, the current file offset, or the end of the file, depending on whether whenceis SEEK_SET, SEEK_CUR, or SEEK_END, respectively. It returns the resulting file position in the argument result.

This system call exists on various 32-bit platforms to support seeking to large file offsets.  

RETURN VALUE

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

ERRORS

EBADF
fdis not an open file descriptor.
EFAULT
Problem with copying results to user space.
EINVAL
whenceis 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. To invoke it directly, use syscall(2). However, you probably want to use the lseek(2) wrapper function instead.  

SEE ALSO

lseek(2), open(2), lseek64(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO
NOTES
SEE ALSO

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