Commit b5eb8386645bf1bcfafa63c729ff9a86454def87
2009-09-23T14:51:29
same-inode: make SAME_INODE tri-state, to port to mingw Mingw has the annoying habit (already documented in doc/posix-functions/*stat) that st_ino is always 0. This means that naive uses of SAME_INODE(a,b) would succeed, even on distinct files. Here's an analysis of all gnulib modules that used the macro before this commit: chdir-safer is safe - SAME_INODE protected by HAVE_READLINK cycle-check - mingw has no dir hard links and no symlinks, so no directory cycles can occur, and we should ignore -1 fts - SAME_INODE protected by FTS_DEBUG hash-triple - using -1 gives more hash collisions, but the results are still correct openat-proc - SAME_INODE protected by stat("/proc/self") same - no dir cycles, so files are only same with identical name link-follow.m4 - configure test already correct on mingw test-canonicalize* - test already passes on mingw test-[l]stat - test already passes on mingw * NEWS: Mention this change. * lib/same-inode.h (same-inode.h): Recognize mingw limitation of st_ino always being 0. * lib/cycle-check.h (CYCLE_CHECK_REFLECT_CHDIR_UP): Update caller. * lib/cycle-check.c (cycle_check): Likewise. * lib/same.c (same_name): Likewise. Signed-off-by: Eric Blake <ebb9@byu.net>