bionic (2) llseek.2.gz

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()  system  call repositions the offset of the open file description associated with the file
       descriptor fd to (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 whether whence is 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 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.  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)

COLOPHON

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       https://www.kernel.org/doc/man-pages/.