From 9a56b87717ae6c24576b939b6484f3af175514d6 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Mon, 14 Dec 2020 16:17:19 +0900
Subject: [PATCH] udev: move util_path_encode() and rename it to escape_path()

---
 src/libudev/libudev-util.c | 34 ----------------------------------
 src/libudev/libudev-util.h |  1 -
 src/udev/udev-node.c       | 36 +++++++++++++++++++++++++++++++++++-
 3 files changed, 35 insertions(+), 36 deletions(-)

diff --git a/src/libudev/libudev-util.c b/src/libudev/libudev-util.c
index 45977339ac..f4f686fc88 100644
--- a/src/libudev/libudev-util.c
+++ b/src/libudev/libudev-util.c
@@ -75,40 +75,6 @@ int util_resolve_subsys_kernel(const char *string, char *result, size_t maxsize,
         return 0;
 }
 
-size_t util_path_encode(const char *src, char *dest, size_t size) {
-        size_t i, j;
-
-        assert(src);
-        assert(dest);
-
-        for (i = 0, j = 0; src[i] != '\0'; i++) {
-                if (src[i] == '/') {
-                        if (j+4 >= size) {
-                                j = 0;
-                                break;
-                        }
-                        memcpy(&dest[j], "\\x2f", 4);
-                        j += 4;
-                } else if (src[i] == '\\') {
-                        if (j+4 >= size) {
-                                j = 0;
-                                break;
-                        }
-                        memcpy(&dest[j], "\\x5c", 4);
-                        j += 4;
-                } else {
-                        if (j+1 >= size) {
-                                j = 0;
-                                break;
-                        }
-                        dest[j] = src[i];
-                        j++;
-                }
-        }
-        dest[j] = '\0';
-        return j;
-}
-
 /* allow chars in allow list, plain ascii, hex-escaping and valid utf8 */
 size_t util_replace_chars(char *str, const char *allow) {
         size_t i = 0, replaced = 0;
diff --git a/src/libudev/libudev-util.h b/src/libudev/libudev-util.h
index d2b22f9974..dd0561d90e 100644
--- a/src/libudev/libudev-util.h
+++ b/src/libudev/libudev-util.h
@@ -10,7 +10,6 @@
 #define UTIL_NAME_SIZE                       512
 #define UTIL_LINE_SIZE                     16384
 #define UDEV_ALLOWED_CHARS_INPUT        "/ $%?,"
-size_t util_path_encode(const char *src, char *dest, size_t size);
 size_t util_replace_chars(char *str, const char *white);
 int util_resolve_subsys_kernel(const char *string, char *result, size_t maxsize, bool read_value);
 
diff --git a/src/udev/udev-node.c b/src/udev/udev-node.c
index 2cc78c9e2f..9cb78ae837 100644
--- a/src/udev/udev-node.c
+++ b/src/udev/udev-node.c
@@ -192,6 +192,40 @@ static int link_find_prioritized(sd_device *dev, bool add, const char *stackdir,
         return 0;
 }
 
+static size_t escape_path(const char *src, char *dest, size_t size) {
+        size_t i, j;
+
+        assert(src);
+        assert(dest);
+
+        for (i = 0, j = 0; src[i] != '\0'; i++) {
+                if (src[i] == '/') {
+                        if (j+4 >= size) {
+                                j = 0;
+                                break;
+                        }
+                        memcpy(&dest[j], "\\x2f", 4);
+                        j += 4;
+                } else if (src[i] == '\\') {
+                        if (j+4 >= size) {
+                                j = 0;
+                                break;
+                        }
+                        memcpy(&dest[j], "\\x5c", 4);
+                        j += 4;
+                } else {
+                        if (j+1 >= size) {
+                                j = 0;
+                                break;
+                        }
+                        dest[j] = src[i];
+                        j++;
+                }
+        }
+        dest[j] = '\0';
+        return j;
+}
+
 /* manage "stack of names" with possibly specified device priorities */
 static int link_update(sd_device *dev, const char *slink, bool add) {
         _cleanup_free_ char *target = NULL, *filename = NULL, *dirname = NULL;
@@ -206,7 +240,7 @@ static int link_update(sd_device *dev, const char *slink, bool add) {
         if (r < 0)
                 return log_device_debug_errno(dev, r, "Failed to get id_filename: %m");
 
-        util_path_encode(slink + STRLEN("/dev"), name_enc, sizeof(name_enc));
+        escape_path(slink + STRLEN("/dev"), name_enc, sizeof(name_enc));
         dirname = path_join("/run/udev/links/", name_enc);
         if (!dirname)
                 return log_oom();