aboutsummaryrefslogtreecommitdiff
path: root/arch/casiowin/core/src/dirent/open.c
blob: c3152f5e786e2d187af837c920541a5bd687eb50 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
/* ****************************************************************************
 * dirent/open.c -- Open a directory stream.
 * Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
 *
 * This file is part of the 'casiowin/core' module in libcarrot, an
 * experimental modular libc project.
 *
 * This file is governed by the CeCILL-C license under French law and abiding
 * by the rules of distribution of free software. You can use, modify and or
 * redistribute it under the terms of the CeCILL-C license as circulated by
 * CEA, CNRS and INRIA at the following URL: http://www.cecill.info
 *
 * As a counterpart to the access to the source code and rights to copy, modify
 * and redistribute granted by the license, users are provided only with a
 * limited warranty and the software's author, the holder of the economic
 * rights, and the successive licensors have only limited liability.
 *
 * In this respect, the user's attention is drawn to the risks associated with
 * loading, using, modifying and/or developing and reproducing the software by
 * the user in light of its specific status of free software, that may mean
 * that it is complicated to manipulate, and that also therefore means that it
 * is reserved for developers and experienced professionals having in-depth
 * computer knowledge. Users are therefore encouraged to load and test the
 * software's suitability as regards their requirements in conditions enabling
 * the security of their systems and/or data to be ensured and, more generally,
 * to use and operate it in the same conditions as regards security.
 *
 * The fact that you are presently reading this means you have had knowledge of
 * the CeCILL-C license and that you accept its terms.
 * ************************************************************************* */
#include "dirent.h"
#include <stdlib.h>
#include <string.h>
#define ENOMEM 10 /* FIXME */

/**
 *	opendir:
 *	Open a directory stream.
 *
 *	@arg	path	the stream path.
 *	@return			the stream pointer.
 */

DIR *opendir(const char *path)
{
	FONTCHARACTER *fpath; size_t fsize;
	DIR *dir; int ret;

	/* get the FONTCHARACTER encoded path */
	fsize = mbstowcs(NULL, path, 0);
	if (fsize == (size_t)-1) { errno = EDOM; return (NULL); }
	fpath = malloc(fsize + 1);
	if (!fpath) { errno = ENOMEM; return (NULL); }

	/* initialize the handle */
	dir = malloc(sizeof(DIR));
	if (!dir) { errno = ENOMEM; free(fpath); return (NULL); }
	memset(dir, 0, sizeof(DIR));
	dir->handle = -1;

	/* find the first file */
	ret = Bfile_FindFirst(fpath, &dir->handle, dir->path, &dir->info);
	free(fpath); dir->lasterr = ret;
	if (ret < 0 && dir->lasterr != IML_FILEERR_ENUMRATEEND) {
		/* FIXME: return success if empty directory? */
		errno = __errno_from_fileerr(ret);
		free(dir);
		return (NULL);
	}

	/* the stream has been opened! */
	return (dir);
}

/**
 *	closedir:
 *	Close a directory stream.
 *
 *	@arg	dir		the directory stream pointer.
 *	@return			0 on success, -1 on error.
 */

int closedir(DIR *dir)
{
	/* close the handle */
	int ret = Bfile_FindClose(dir->handle);
	if (ret < 0) {
		errno = __errno_from_fileerr(ret);
		return (-1);
	}

	/* free and exit */
	free(dir);
	return (0);
}