5 files changed, 82 insertions, 0 deletions
diff --git a/userland/libc/dirent/alphasort.c b/userland/libc/dirent/alphasort.c
new file mode 100644
index 0000000..43a4b5f
--- /dev/null
+++ b/userland/libc/dirent/alphasort.c
@@ -0,0 +1,7 @@
+#include <dirent.h>
+
+int alphasort(const struct dirent **d1, const struct dirent **d2) {
+  // TODO: Actually sort it
+  *d2 = *d1;
+  return 0;
+}
diff --git a/userland/libc/dirent/closedir.c b/userland/libc/dirent/closedir.c
new file mode 100644
index 0000000..e216d7c
--- /dev/null
+++ b/userland/libc/dirent/closedir.c
@@ -0,0 +1,7 @@
+#include <dirent.h>
+
+int closedir(DIR *dir) {
+  close(dir->fd);
+  free(dir);
+  return 0;
+}
diff --git a/userland/libc/dirent/opendir.c b/userland/libc/dirent/opendir.c
new file mode 100644
index 0000000..7bfa562
--- /dev/null
+++ b/userland/libc/dirent/opendir.c
@@ -0,0 +1,11 @@
+#include <dirent.h>
+
+DIR *opendir(const char *dirname) {
+  int fd = open(dirname, O_RDONLY, 0);
+  if (-1 == fd)
+    return NULL;
+  DIR *rc = malloc(sizeof(DIR));
+  rc->fd = fd;
+  rc->dir_num = 0;
+  return rc;
+}
diff --git a/userland/libc/dirent/readdir.c b/userland/libc/dirent/readdir.c
new file mode 100644
index 0000000..88aff48
--- /dev/null
+++ b/userland/libc/dirent/readdir.c
@@ -0,0 +1,14 @@
+#include <dirent.h>
+
+struct dirent *readdir(DIR *dir) {
+  size_t offset = dir->dir_num * sizeof(struct dirent);
+  int rc;
+  if (-1 == (rc = pread(dir->fd, &dir->internal_direntry, sizeof(struct dirent),
+                        offset)))
+    return NULL;
+  if (rc < sizeof(struct dirent))
+    return NULL;
+
+  dir->dir_num++;
+  return &(dir->internal_direntry);
+}
diff --git a/userland/libc/dirent/scandir.c b/userland/libc/dirent/scandir.c
new file mode 100644
index 0000000..1520140
--- /dev/null
+++ b/userland/libc/dirent/scandir.c
@@ -0,0 +1,43 @@
+#include <dirent.h>
+#include <stdlib.h>
+#include <string.h>
+
+int nop_sel(const struct dirent *unused) {
+  (void)unused;
+  return 1;
+}
+
+int nop_compar(const struct dirent **d1, const struct dirent **d2) {
+  *d2 = *d1;
+  return 0;
+}
+
+int scandir(const char *dir, struct dirent ***namelist,
+            int (*sel)(const struct dirent *),
+            int (*compar)(const struct dirent **, const struct dirent **)) {
+  if (!sel)
+    sel = nop_sel;
+
+  if (!compar)
+    compar = nop_compar;
+
+  DIR *d = opendir(dir);
+  struct dirent **list = NULL;
+  struct dirent *e;
+  int rc = 0;
+  for (; (e = readdir(d));) {
+    if (!sel(e))
+      continue;
+    struct dirent *p = malloc(sizeof(struct dirent));
+    memcpy(p, e, sizeof(struct dirent));
+    list = realloc(list, (rc + 1) * sizeof(struct dirent *));
+    list[rc] = p;
+    rc++;
+  }
+  //  struct dirent **new_list;
+  //  compar((const struct dirent **)list, (const struct dirent **)new_list);
+  //  *namelist = new_list;
+  *namelist = list;
+  // closedir(d);
+  return rc;
+}