refactor(userspace/apps/test): ♻️ move all functions in one file

it's just too much...

Signed-off-by: EnderIce2 <enderice2@protonmail.com>

Userspace/apps/test/libc_test/dirent.c

@@ -0,0 +1,140 @@
+/*
+	This file is part of Fennix Userspace.
+
+	Fennix Userspace is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Userspace is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Userspace. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#ifdef __linux__
+#define _DEFAULT_SOURCE 1 /* for alphasort */
+#endif
+
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+
+int test_alphasort(void)
+{
+	struct dirent **namelist;
+	int n = scandir(".", &namelist, NULL, alphasort);
+	if (n < 0)
+	{
+		perror("scandir");
+		return n;
+	}
+
+	for (int i = 0; i < n; i++)
+	{
+		// printf("%s\n", namelist[i]->d_name);
+		free(namelist[i]);
+	}
+
+	free(namelist);
+	return 0;
+}
+
+int test_closedir(void)
+{
+	DIR *dir = opendir(".");
+	if (closedir(dir) != 0)
+		return 0x101;
+
+	if (closedir(NULL) != -1)
+		return 0x102;
+
+	// if (closedir(dir) != -1) /* yeah... this will result in a core dump */
+	// 	return 0x103;
+	return 0;
+}
+
+int test_dirfd(void)
+{
+	DIR *dir = opendir(".");
+
+	if (dirfd(dir) == -1)
+		return 0x101;
+
+	// if (dirfd(NULL) != -1)
+	// 	return 0x102;
+
+	return 0;
+}
+
+int test_fdopendir(void)
+{
+	DIR *dir;
+	struct dirent *dp;
+
+	int fd = open(".", O_RDONLY);
+
+	dir = fdopendir(fd);
+	if (dir == NULL)
+		return 0x101;
+
+	dp = readdir(dir);
+	if (dp == NULL)
+		return 0x102;
+
+	if (closedir(dir) != 0)
+		return 0x103;
+
+	return 0;
+}
+
+int test_opendir()
+{
+	DIR *dir = opendir(".");
+	if (dir == NULL)
+		return 0x101;
+
+	if (closedir(dir) != 0)
+		return 0x102;
+
+	return 0;
+}
+
+int test_posix_getdents()
+{
+	return 2;
+}
+
+int test_readdir_r()
+{
+	return 2;
+}
+
+int test_readdir()
+{
+	return 2;
+}
+
+int test_rewinddir()
+{
+	return 2;
+}
+
+int test_scandir()
+{
+	return 2;
+}
+
+int test_seekdir()
+{
+	return 2;
+}
+
+int test_telldir()
+{
+	return 2;
+}