From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/dirent/fdopendir.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 src/dirent/fdopendir.c

(limited to 'src/dirent/fdopendir.c')

diff --git a/src/dirent/fdopendir.c b/src/dirent/fdopendir.c
new file mode 100644
index 0000000..d78fb87
--- /dev/null
+++ b/src/dirent/fdopendir.c
@@ -0,0 +1,31 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <stdlib.h>
+#include "__dirent.h"
+
+DIR *fdopendir(int fd)
+{
+	DIR *dir;
+	struct stat st;
+
+	if (fstat(fd, &st) < 0) {
+		return 0;
+	}
+	if (fcntl(fd, F_GETFL) & O_PATH) {
+		errno = EBADF;
+		return 0;
+	}
+	if (!S_ISDIR(st.st_mode)) {
+		errno = ENOTDIR;
+		return 0;
+	}
+	if (!(dir = calloc(1, sizeof *dir))) {
+		return 0;
+	}
+
+	fcntl(fd, F_SETFD, FD_CLOEXEC);
+	dir->fd = fd;
+	return dir;
+}
-- 
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