_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, loff_t *, res, uint, wh);
The _llseek function repositions the offset of the file descriptor fd to (offset_high 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.
This function is Linux-specific, and should not be used in programs intended to be portable.
Linux prior to 2.4 does not support files with a size of 2GB or more. Some librarys may not support large files unless compiled on a 2.4 kernel.
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