utils-std

mkdir.c (1236B)

// utils-std: Collection of commonly available Unix tools
// SPDX-FileCopyrightText: 2017 Haelwenn (lanodan) Monnier <contact+utils@hacktivis.me>
// SPDX-License-Identifier: MPL-2.0
#define _POSIX_C_SOURCE 200809L
#include "./mkdir.h"
#include <assert.h>
#include <errno.h>
#include <limits.h>   // PATH_MAX
#include <stdio.h>    // fprintf
#include <string.h>   // strlen, strerror
#include <sys/stat.h> // mkdir
int
mkdir_parents(char *path, mode_t mode)
{
	assert(errno == 0);
	for(int i = strlen(path) - 1; i >= 0; i--)
	{
		if(path[i] != '/') break;
		path[i] = 0;
	}
	char parent[PATH_MAX] = "";
	strncpy(parent, path, PATH_MAX);
	for(int i = strlen(parent) - 1; i >= 0; i--)
	{
		if(parent[i] == '/') break;
		parent[i] = 0;
	}
	if(path[0] == 0) return 0;
	mode_t parent_mode = (S_IWUSR | S_IXUSR | ~mkdir_parents_filemask) & 0777;
	if(mkdir_parents(parent, parent_mode) < 0) return -1;
	assert(errno == 0);
	if(mkdir(path, mode) < 0)
	{
		if(errno == EEXIST)
		{
			errno = 0;
			return 0;
		}
		fprintf(stderr, "%s: Failed making directory '%s': %s\n", argv0, path, strerror(errno));
		errno = 0;
		return -1;
	}
	if(mkdir_parents_verbose) fprintf(stderr, "%s: Made directory: %s\n", argv0, path);
	return 0;
}