erofs-freebsd-out-tree/tests/TC040-symlink-broken.md

Test Case: Broken Symlink

Test ID: TC040-symlink-broken

Objective

Verify readlink(2) succeeds for a deterministic broken link while following the target fails with exact ENOENT.

Fixture

Use images/inline.erofs and source/inline/brokenlink. Evidence asserts symlink mode, layout 2, and target length 29.

Procedure

test -L "$mnt/brokenlink"
readlink /tmp/repo22-g1/source/inline/brokenlink > /tmp/tc040-source-target
readlink "$mnt/brokenlink" > /tmp/tc040-mount-target
cmp /tmp/tc040-source-target /tmp/tc040-mount-target
./read_probe expect-error "$mnt/brokenlink" 2
./read_probe expect-error "$mnt/brokenlink" 2

Expected Results

• Both readlink targets equal /nonexistent/repo22-g1-target.
• Both follow attempts return errno 2 (ENOENT), while the symlink itself remains visible; no kernel error or cleanup failure occurs.