package openat

import "github.com/hanwen/go-fuse/v2/internal/openat"

Index ¶

• func OpenSymlinkAware(baseDir string, path string, flags int, mode uint32) (fd int, err error)

Functions ¶

func OpenSymlinkAware ¶

func OpenSymlinkAware(baseDir string, path string, flags int, mode uint32) (fd int, err error)

OpenSymlinkAware is a symlink-aware syscall.Open replacement.

What it does:

1. Open baseDir (usually an absolute path), following symlinks.

   The user may have set up the directory tree with symlinks, that's not neccessarily malicous, but a normal use case.

2. Open path (must be a relative path) within baseDir, rejecting symlinks with ELOOP.

   On Linux, it calls openat2(2) with RESOLVE_NO_SYMLINKS. This prevents following symlinks in any component of the path.

   On other platforms, it calls openat(2) with O_NOFOLLOW. TODO: This is insecure as O_NOFOLLOW only affects the final path component.

Source Files ¶

openat.go openat_linux.go