LLSEEK(2) Linux Programmer's Manual LLSEEK(2)
_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);
Note: There is no glibc wrapper for this system call; see NOTES.
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.
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 porta-
Glibc does not provide a wrapper for this system call; call it using syscall(2).
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
Linux 2012-07-13 LLSEEK(2)