(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).
(main): Standardize on a diagnostic for restore_cwd failure,
and report errno.
Don't bother to check cwd_errno unless create_parents.
Use mkdir rather than make_dir; it's simpler.
restore_cwd failure, and report errno.
(install_file_in_file_parents): Fail if restore_cwd fails and
one of the files is relative. This fixes a bug (albeit unlikely).
(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.
restore_cwd failure. Now, an application can arrange e.g.,
to perform a longjump in that case.
* openat.c: Include dirname.h.
Use IS_ABSOLUTE_FILE_NAME rather than testing for leading slash.
(rpl_openat, fdopendir, fstatat): Call openat_save_die
and openat_restore_die rather than calling error directly.
Don't include "error.h" or "exitfail.h"; they're no longer needed.
* openat-die.c (openat_save_die, openat_restore_die): New file.
* openat.h (openat_save_die, openat_restore_die): Declare and define.
directory, give a diagnostic about each subsequent failure to create
a dot-relative directory.
(install_file_in_file_parents): Update make_dir_parents caller.
