Originální popis anglicky:
_llseek - reposition read/write file offset
Návod, kniha: Linux Programmer's Manual
#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);
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, respectively. It returns the resulting file position in
the argument
result.
Upon successful completion,
_llseek returns 0. Otherwise, a value of -1
is returned and
errno is set to indicate the error.
- EBADF
- fd is not an open file descriptor.
- EFAULT
- Problem with copying results to user space.
- EINVAL
- whence is invalid.
This function is Linux-specific, and should not be used in programs intended to
be portable.
lseek(2)
