X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=bootcensus;a=blobdiff_plain;f=src%2Flibc%2Fdirent.c;fp=src%2Flibc%2Fdirent.c;h=1af59fe36697aaedf5bfe9beef8d88e5a19f25b9;hp=0000000000000000000000000000000000000000;hb=78e3e75fc7b5838d0261c876d00e1b8c3e0bcfe0;hpb=7b6f6de2124e28ae7da5599a7cdaf2c171c4f15e

diff --git a/src/libc/dirent.c b/src/libc/dirent.c
new file mode 100644
index 0000000..1af59fe
--- /dev/null
+++ b/src/libc/dirent.c
@@ -0,0 +1,95 @@
+/*
+pcboot - bootable PC demo/game kernel
+Copyright (C) 2018-2019  John Tsiombikas <nuclear@member.fsf.org>
+
+This program 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.
+
+This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "dirent.h"
+#include "fs.h"
+
+struct DIR {
+	struct fs_node *fsn;
+	struct dirent dent;
+};
+
+DIR *opendir(const char *path)
+{
+	DIR *dir;
+	struct fs_node *node;
+
+	if(!path) {
+		errno = EINVAL;
+		return 0;
+	}
+
+	if(!(node = fs_open(path, 0))) {
+		errno = ENOENT;
+		return 0;
+	}
+	if(node->type != FSNODE_DIR) {
+		errno = ENOTDIR;
+		fs_close(node);
+		return 0;
+	}
+
+	if(!(dir = malloc(sizeof *dir))) {
+		errno = ENOMEM;
+		fs_close(node);
+		return 0;
+	}
+	dir->fsn = node;
+
+	return dir;
+}
+
+int closedir(DIR *dir)
+{
+	if(!dir) {
+		errno = EINVAL;
+		return -1;
+	}
+	fs_close(dir->fsn);
+	free(dir);
+	return 0;
+}
+
+void rewinddir(DIR *dir)
+{
+	if(!dir) {
+		errno = EINVAL;
+		return;
+	}
+	fs_rewinddir(dir->fsn);
+}
+
+struct dirent *readdir(DIR *dir)
+{
+	struct fs_dirent *fsdent;
+
+	if(!dir) {
+		errno = EINVAL;
+		return 0;
+	}
+	if(!(fsdent = fs_readdir(dir->fsn))) {
+		return 0;
+	}
+
+	strcpy(dir->dent.d_name, fsdent->name);
+	dir->dent.d_type = fsdent->type == FSNODE_DIR ? DT_DIR : DT_REG;
+	dir->dent.d_fsize = fsdent->fsize;
+	return &dir->dent;
+}