Table of Contents_llseek - reposition read/write file offset #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.
- EINVAL
- whence is invalid.
This function is Linux-specific. There is no support for files with a size of 4GB or more. lseek(2)
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