_llseek - reposition read/write file offset
int _llseek(unsigned int fd, unsigned long offset_high,
unsigned long offset_low, loff_t *result,
unsigned int whence);
: There is no glibc wrapper for this system call; see NOTES.
() function repositions the offset of the open file
description associated with the file descriptor fd
(offset_high<<32) | offset_low
bytes relative to the beginning of
the file, the current file offset, or the end of the file, depending on
, or SEEK_END
respectively. It returns the resulting file position in the argument
This system call exists on various 32-bit platforms to support seeking to large
Upon successful completion, _llseek
() returns 0. Otherwise, a value of -1
is returned and errno
is set to indicate the error.
- fd is not an open file descriptor.
- Problem with copying results to user space.
- whence is invalid.
This function is Linux-specific, and should not be used in programs intended to
Glibc does not provide a wrapper for this system call. To invoke it directly,
(2). However, you probably want to use the lseek
wrapper function instead.
This page is part of release 4.13 of the Linux man-pages
description of the project, information about reporting bugs, and the latest
version of this page, can be found at