lseek (nr 8)

Linux Signature

off_t lseek(int fd, off_t offset, int whence);

Description

Repositions the file offset of the open file descriptor fd to the given offset according to whence (SEEK_SET, SEEK_CUR, SEEK_END).

Current Implementation

Always returns -ESPIPE (illegal seek). The only file descriptors currently in use are stdin/stdout/stderr, which behave as non-seekable character devices (serial console).

Source: osl/src/syscalls/mod.rs — inline stub in syscall_dispatch

Future Work

• Implement proper seek for regular file descriptors once the VFS exposes them to user-space via open.