(make_dir_parents): Use S_IRWXU, now that read access is also required.
Avoid a race condition, on systems where open honors O_NOFOLLOW.
(make_dir_parents): Include chdir-safer.h.
Use chdir_no_follow in place of chdir.
directory but exit nonzero with a diagnostic. This could also be
triggered with a non-`.' component, e.g., in a race with another
process running the same `mkdir -p nonexistent/sub' command.
(make_dir_parents): Handle the case of an existing final component.
Reported by Matthias Andree here:
http://savannah.gnu.org/bugs/?func=detailitem&item_id=14848
(make_dir_parents): Last arg is now int * (for errno), not bool *.
Rewrite "mkdir -p" algorithm to avoid the need for "stat"
each time through the loop. Do not diagnose restore_cwd failure;
that is the caller's job (and perhaps the caller does not care).
(make_dir_parents): Revamp to avoid need for CLEANUP_CWD, CLEANUP.
If the file already exists but is not a directory, don't bother
to try to make its parents.
Close potential file descriptor leak if we can't chdir("/") (!).
Don't always return true if chdir($PWD) fails; return true only
if the requested action was done successfully (except for the
chdir($PWD)).
Don't log final directory unless we actually made it.
Refactor to avoid duplicate code to fix up permissions.
Don't attempt to fix up parent permissions if chdir($PWD) fails.
Paul Eggert
Jim Meyering