refactor: restructure the user space stuff.

[lunaix-os.git] / lunaix-os / usr / libc / src / readdir.c

diff --git a/lunaix-os/usr/libc/src/readdir.c b/lunaix-os/usr/libc/src/readdir.c
new file mode 100644 (file)
index 0000000..d70f225
--- /dev/null
+++ b/lunaix-os/usr/libc/src/readdir.c
@@ -0,0 +1,57 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+DIR*
+opendir(const char* dir)
+{
+    static DIR _dir;
+    int fd = open(dir, O_RDONLY);
+    if (fd < 0) {
+        return NULL;
+    }
+
+    _dir = (DIR){ .dirfd = fd };
+    return &_dir;
+}
+
+int
+closedir(DIR* dirp)
+{
+    if (!dirp || dirp->dirfd == -1) {
+        // TODO migrate the status.h
+        return -1;
+    }
+
+    int err = close(dirp->dirfd);
+
+    if (!err) {
+        dirp->dirfd = -1;
+        return 0;
+    }
+
+    return -1;
+}
+
+struct dirent*
+readdir(DIR* dir)
+{
+    static struct dirent _dirent;
+    if (!dir) {
+        return NULL;
+    }
+
+    struct lx_dirent* _lxd = &dir->_lxd;
+
+    int more = sys_readdir(dir->dirfd, _lxd);
+
+    _dirent.d_type = _lxd->d_type;
+    strncpy(_dirent.d_name, _lxd->d_name, 256);
+
+    if (more) {
+        return &_dirent;
+    }
+
+    return NULL;
+}
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