seek - change file offset #include <u.h>

#include <libc.h>

vlong seek(int fd, vlong n, int type)

Seek sets the offset for the file associated with fd as follows: If type is 0, the offset is set to n bytes. If type is 1, the pointer is set to its current location plus n . If type is 2, the pointer is set to the size of the file plus n .

The new file offset value is returned.

Seeking in a directory is not allowed. Seeking in a pipe is a no-op.

/sys/src/libc/9syscall intro (2), open (2) Sets errstr .