Hi! As the author of a find-compatible tool, whenever I find another find implementation I run my testsuite against it to see if I find any bugs in either one. sbase/find helped me identify many places in my POSIX tests that use extensions to POSIX when they shouldn't, so thanks! Here's the bugs that I found in sbase/find:
- Errors reported for broken symlinks in -L/-H modes - $ mkdir foo $ ln -s nowhere foo/broken $ touch foo/bar $ ln -s bar/baz foo/notdir $ ./find -L foo foo foo/bar ./find: failed to stat foo/broken: No such file or directory ./find: failed to stat foo/notdir: Not a directory $ ./find -H foo/broken ./find: failed to stat foo/broken: No such file or directory $ ./find -H foo/notdir ./find: failed to stat foo/notdir: Not a directory For -H/-L, POSIX says (http://pubs.opengroup.org/onlinepubs/9699919799/utilities/find.html) > If the referenced file does not exist, the file information and type shall be > for the link itself. - Names longer than PATH_MAX are broken - POSIX says > The find utility shall be able to descend to arbitrary depths in a file > hierarchy and shall not fail due to path length limitations (unless a path > operand specified by the application exceeds {PATH_MAX} requirements). but: $ name="0123456789ABCDEF" $ name="${name}${name}${name}${name}" $ name="${name}${name}${name}${name}" $ name="${name:0:255}" $ (mkdir deep && cd deep && for i in {1..17}; do mkdir $name && cd $name; done) $ ./find deep ... ./find: failed to stat deep/...ABCDE: File name too long Despite that, it exits successfully, which is probably also a bug. - find -newer follows symbolic links - $ mkdir foo $ touch foo/bar $ ln -s bar foo/baz $ touch foo/qux $ ./find foo -newer foo/baz foo foo/baz foo/qux foo/baz is not newer than itself though. - find -perm doesn't support X - $ ./find . -perm a+rX,u+w ./find: a+rX,u+w: invalid mode About the mode format for -perm, POSIX says > It shall be identical in format to the symbolic_mode operand described in > chmod chmod supports X, so find should too. If you want to run these tests yourself, clone https://github.com/tavianator/bfs and run $ ./tests.sh --bfs=path/to/sbase/find --posix -- Tavian Barnes
