/*
 * MKDIRPATH.C
 *
 * (c)Copyright 2015, Matthew Dillon, All Rights Reserved.  See the  
 *    COPYRIGHT file at the base of the distribution.
 */

#include "defs.h"

/*
 * Create missing directory path components, including the last path
 * element if specified.  Intermediate directory path components are
 * allowed to exist and may contain softlinks.
 */
void
mkdirpath(const char *path, int lastcomp)
{
	const char *stop;
	const char *next;
	char *sub;
	struct stat st;

	stop = path;
	while (*stop == '/')
		++stop;
	while (*stop) {
		if ((next = strchr(stop, '/')) == NULL)
			stop += strlen(stop);
		else
			stop = next;
		next = stop;
		while (*next == '/')
			++next;
		if (lastcomp == 0 && *next == 0)
			break;
		sub = malloc(stop - path + 1);
		bcopy(path, sub, stop - path);
		sub[stop - path] = 0;

		if (stat(sub, &st) < 0) {
			if (errno != ENOENT)
				break;
			if (mkdir(sub, 0755) < 0) {
				if (errno != EEXIST)
					break;
			}
		}
		free(sub);
		stop = next;
	}
}