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¶

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