pgmkdirp.cpp File Reference

This is adapted from PostgreSQL's src/port/pgmkdirp.c. More...

#include "tdb.h"
#include <cerrno>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

Functions
int	pg_mkdir_p (char *path, int omode)
	Creates a directory and, if necessary, parent directories. More...

Detailed Description

This is adapted from PostgreSQL's src/port/pgmkdirp.c.

See COPYRIGHT for PostgreSQL's copyright notice. The following is the original copyright notice that the original pgmkdirp.c bears.

This is adapted from FreeBSD's src/bin/mkdir/mkdir.c, which bears the following copyright notice:

Copyright (c) 1983, 1992, 1993 The Regents of the University of California. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the University nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS `‘AS IS’' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Function Documentation

pg_mkdir_p()

int pg_mkdir_p	(	char *	path,
		int	omode
	)

Creates a directory and, if necessary, parent directories.

This function is adapted from pg_mkdir_p() in PostgreSQL's src/port/pgmkdirp.c.

This is equivalent to "mkdir -p" except we don't complain if the target directory already exists.

We assume the path is in canonical form, i.e., uses / as the separator.

omode is the file permissions bits for the target directory. Note that any parent directories that have to be created get permissions according to the prevailing umask, but with u+wx forced on to ensure we can create there. (We declare omode as int, not mode_t, to minimize dependencies for port.h.)

Returns 0 on success, -1 (with errno set) on failure.

Note that on failure, the path arg has been modified to show the particular directory level we had problems with.