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https://github.com/troglobit/libite.git
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Joachim Wiberg
6537b11e34
Framework from libuEv. Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/* mkpath() -- Create all components leading up to a given directory
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*
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* Copyright (c) 2013-2021 Joachim Wiberg <troglobit@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/**
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* @file makepath.c
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* @author Joachim Wiberg
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* @date 2013-2021
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* @copyright ISC License
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*/
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#include <errno.h>
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#include <libgen.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "lite.h"
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/**
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* makepath() but takes a mode_t argument.
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* @param dir Directory to created, relative or absolute
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* @param mode A &mode_t mode to create @a dir with
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*
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* @returns POSIX OK(0) on success, otherwise -1 with @a errno set.
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*/
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int mkpath(const char *dir, mode_t mode)
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{
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struct stat sb;
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if (!dir) {
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errno = EINVAL;
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return -1;
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}
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if (!stat(dir, &sb))
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return 0;
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mkpath(dirname(strdupa(dir)), mode);
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return mkdir(dir, mode);
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}
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/**
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* Formatted version of mkpath().
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* @param mode A mode_t mode to create directories with
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* @param fmt Formatted string to be composed into a pathname
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*
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* @note Notice the swapped arguments, compared to mkpath()!
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*
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* @returns POSIX OK(0) on success, otherwise -1 with @a errno set.
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*/
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int fmkpath(mode_t mode, const char *fmt, ...)
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{
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va_list ap;
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char *path;
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int len;
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va_start(ap, fmt);
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len = vsnprintf(NULL, 0, fmt, ap);
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va_end(ap);
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path = alloca(len + 1);
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if (!path) {
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errno = ENOMEM;
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return -1;
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}
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va_start(ap, fmt);
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len = vsnprintf(path, len + 1, fmt, ap);
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va_end(ap);
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return mkpath(path, mode);
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}
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/**
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* Create all components of the specified directory.
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* @param dir Directory to create.
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*
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* @note It is strongly recommended to use mkpath() over this function
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* since it has the @a mode argument while this function default to
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* 0777, which in most cases is insecure.
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*
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* @returns POSIX OK (0) on success, otherwise -1 and @a errno set
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* appropriately.
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*
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* @exception EINVAL on bad argument, or
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* @exception ENOMEM when it fails allocating temporary memory.
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*
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* For other error codes see the mkdir(2) syscall description.
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*/
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int makepath(const char *dir)
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{
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return mkpath(dir, 0777);
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}
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/**
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* Local Variables:
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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