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From 64a1cc3f5771187d18725b5fee9cc620e29841a7 Mon Sep 17 00:00:00 2001
From: cyberl0l1 <>
Date: Tue, 23 Jun 2026 00:20:16 +0000
Subject: [PATCH] Make cpdir copy symlinks
---
src/files.c | 30 +++++++++++++++++++++++++++++-
1 file changed, 29 insertions(+), 1 deletion(-)
diff --git a/src/files.c b/src/files.c
index 3e5df9f..988b329 100644
--- a/src/files.c
+++ b/src/files.c
@@ -1,6 +1,7 @@
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
+#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -86,8 +87,35 @@ cleanup0:
return ret;
}
+#define ERROR_NOT_A_SYMLINK (-2)
+
+static int copy_symlink(int src_dir_fd, const char *src_path, int dst_dir_fd, const char *dst_path) {
+ char symlink_target[PATH_MAX];
+ ssize_t symlink_target_len = readlinkat(src_dir_fd, src_path, symlink_target, sizeof(symlink_target) - 1);
+ if (symlink_target_len >= 0) {
+ symlink_target[symlink_target_len] = '\0';
+
+ if (symlinkat(symlink_target, dst_dir_fd, dst_path) < 0) {
+ perror("symlinkat");
+ return -1;
+ }
+
+ return 0;
+ } else if (errno == EINVAL) {
+ return ERROR_NOT_A_SYMLINK;
+ } else {
+ perror("readlinkat");
+ return -1;
+ }
+}
+
static int copy_at(int src_dir_fd, const char *src_path, int dst_dir_fd, const char *dst_path) {
- int ret = -1;
+ int ret = copy_symlink(src_dir_fd, src_path, dst_dir_fd, dst_path);
+ if (ret != ERROR_NOT_A_SYMLINK) {
+ goto cleanup0;
+ }
+
+ ret = -1;
int src_fd = openat(src_dir_fd, src_path, O_NOFOLLOW | O_RDONLY);
if (src_fd < 0) {
perror("openat");
--
2.54.0
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