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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
/*
* Creates directory and it's parents if the parents do not
* exist yet.
*
* Returns -1 if fails for reasons other than non-existing
* parents.
* Does NOT simplify pathnames with . or .. in them.
*/
#include <sys/types.h>
#include <libgen.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
static char *simplify(const char *str);
int
mkdirp(const char *d, mode_t mode)
{
char *endptr, *ptr, *slash, *str;
str = simplify(d);
/* If space couldn't be allocated for the simplified names, return. */
if (str == NULL)
return (-1);
/* Try to make the directory */
if (mkdir(str, mode) == 0) {
free(str);
return (0);
}
if (errno != ENOENT) {
free(str);
return (-1);
}
endptr = strrchr(str, '\0');
slash = strrchr(str, '/');
/* Search upward for the non-existing parent */
while (slash != NULL) {
ptr = slash;
*ptr = '\0';
/* If reached an existing parent, break */
if (access(str, F_OK) == 0)
break;
/* If non-existing parent */
else {
slash = strrchr(str, '/');
/* If under / or current directory, make it. */
if (slash == NULL || slash == str) {
if (mkdir(str, mode) != 0 && errno != EEXIST) {
free(str);
return (-1);
}
break;
}
}
}
/* Create directories starting from upmost non-existing parent */
while ((ptr = strchr(str, '\0')) != endptr) {
*ptr = '/';
if (mkdir(str, mode) != 0 && errno != EEXIST) {
/*
* If the mkdir fails because str already
* exists (EEXIST), then str has the form
* "existing-dir/..", and this is really
* ok. (Remember, this loop is creating the
* portion of the path that didn't exist)
*/
free(str);
return (-1);
}
}
free(str);
return (0);
}
/*
* simplify - given a pathname, simplify that path by removing
* duplicate contiguous slashes.
*
* A simplified copy of the argument is returned to the
* caller, or NULL is returned on error.
*
* The caller should handle error reporting based upon the
* returned value, and should free the returned value,
* when appropriate.
*/
static char *
simplify(const char *str)
{
int i;
size_t mbPathlen; /* length of multi-byte path */
size_t wcPathlen; /* length of wide-character path */
wchar_t *wptr; /* scratch pointer */
wchar_t *wcPath; /* wide-character version of the path */
char *mbPath; /* The copy fo the path to be returned */
/*
* bail out if there is nothing there.
*/
if (!str) {
errno = ENOENT;
return (NULL);
}
/*
* Get a copy of the argument.
*/
if ((mbPath = strdup(str)) == NULL) {
return (NULL);
}
/*
* convert the multi-byte version of the path to a
* wide-character rendering, for doing our figuring.
*/
mbPathlen = strlen(mbPath);
if ((wcPath = calloc(mbPathlen+1, sizeof (wchar_t))) == NULL) {
free(mbPath);
return (NULL);
}
if ((wcPathlen = mbstowcs(wcPath, mbPath, mbPathlen)) == (size_t)-1) {
free(mbPath);
free(wcPath);
return (NULL);
}
/*
* remove duplicate slashes first ("//../" -> "/")
*/
for (wptr = wcPath, i = 0; i < wcPathlen; i++) {
*wptr++ = wcPath[i];
if (wcPath[i] == '/') {
i++;
while (wcPath[i] == '/') {
i++;
}
i--;
}
}
*wptr = '\0';
/*
* now convert back to the multi-byte format.
*/
if (wcstombs(mbPath, wcPath, mbPathlen) == (size_t)-1) {
free(mbPath);
free(wcPath);
return (NULL);
}
free(wcPath);
return (mbPath);
}
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