Import from coreutils. * MODULES.html.sh: Add mkancestors. * modules/mkancesdirs: New module. * modules/mkdir-p (Files): Remove lib/chdir-safer.c, lib/chdir-safer.h, lib/same-inode.h, m4/afs.m4, m4/chdir-safer.m4. The chdir-safer and afs files are now orphans; I'll remove them unless someone speaks up. Add lib/dirchownmod.c, lib/dirchownmod.h. (Depends-on): Remove alloca, chown, save-cwd, dirname. Add lchown, mkancesdirs. (Maintainer): Add self. * lib/dirchownmod.c, lib/dirchownmod.h: * lib/mkancesdirs.c, lib/mkancesdirs.h: New files. * lib/mkdir-p.c: Don't include alloca.h, stdio.h, sys/types.h, unistd.h, string.h, chdir-safer.h, dirname.h, lchmod.h, lchown.h, save-cwd.h. Instead, include dirchownmod.h and mkancesdirs.h. (make_dir_parents): New args MAKE_ANCESTOR, OPTIONS, ANNOUNCE, MODE_BITS. Remove options VERBOSE_FMT_STRING, CWD_ERRNO. All callers changed. Revamp internals significantly, by not attempting to create directories that are temporarily more permissive than the final results. Do not attempt to use save_cwd/restore_cwd; it isn't worth it for mkdir and install. This removes some race conditions, fixes some bugs, and simplifies things. Use new dirchownmod function to do owner and mode changes. * lib/mkdir-p.h: Likewise. * lib/modechange.c (octal_to_mode): New function. (struct mode_change): New member mentioned. (make_node_op_equals): New arg mentioned. All callers changed. (mode_compile): Keep track of which mode bits the user has explicitly mentioned. (mode_adjust): New arg DIR, so that we implement the X op correctly. New arg PMODE_BITS, to keep track of which mode bits the user mentioned; it treats S_ISUID and S_ISGID speciall. All callers changed. * lib/modechange.h: Likewise. * mkancesdirs.m4: New file. * mkdir-p.m4 (gl_MKDIR_PARENTS): Mention dirchownmod.c, dirchownmod.h. Don't require AC_FUNC_ALLOCA, gl_AFS, gl_CHDIR_SAFER; no longer needed. Require gl_FUNC_LCHOWN, since dirchownmod.c needs it.

--- a/lib/modechange.h
+++ b/lib/modechange.h
@@ -1,7 +1,7 @@
 /* modechange.h -- definitions for file mode manipulation
 
-   Copyright (C) 1989, 1990, 1997, 2003, 2004, 2005 Free Software
-   Foundation, Inc.
+   Copyright (C) 1989, 1990, 1997, 2003, 2004, 2005, 2006 Free
+   Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -22,10 +22,12 @@
 #if ! defined MODECHANGE_H_
 # define MODECHANGE_H_
 
+# include <stdbool.h>
 # include <sys/types.h>
 
 struct mode_change *mode_compile (const char *);
 struct mode_change *mode_create_from_ref (const char *);
-mode_t mode_adjust (mode_t, struct mode_change const *, mode_t);
+mode_t mode_adjust (mode_t, bool, mode_t, struct mode_change const *,
+		    mode_t *);
 
 #endif