From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 4 Apr 2018 15:06:12 +0000 (+0200)
Subject: fs-util: export how many iterations chase_symlinks() executes at max
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=206dc15a7a29cae1b42521812faf87e0888e07c0;p=elogind.git

fs-util: export how many iterations chase_symlinks() executes at max
---

diff --git a/src/basic/fs-util.c b/src/basic/fs-util.c
index 890a20a3e..7ccd6da21 100644
--- a/src/basic/fs-util.c
+++ b/src/basic/fs-util.c
@@ -597,7 +597,7 @@ static bool safe_transition(const struct stat *a, const struct stat *b) {
 int chase_symlinks(const char *path, const char *original_root, unsigned flags, char **ret) {
         _cleanup_free_ char *buffer = NULL, *done = NULL, *root = NULL;
         _cleanup_close_ int fd = -1;
-        unsigned max_follow = 32; /* how many symlinks to follow before giving up and returning ELOOP */
+        unsigned max_follow = CHASE_SYMLINKS_MAX; /* how many symlinks to follow before giving up and returning ELOOP */
         struct stat previous_stat;
         bool exists = true;
         char *todo;
diff --git a/src/basic/fs-util.h b/src/basic/fs-util.h
index 4abbd0ea6..654922fd1 100644
--- a/src/basic/fs-util.h
+++ b/src/basic/fs-util.h
@@ -94,6 +94,9 @@ enum {
         CHASE_STEP        = 1U << 6,   /* If set, just execute a single step of the normalization */
 };
 
+/* How many iterations to execute before returning -ELOOP */
+#define CHASE_SYMLINKS_MAX 32
+
 int chase_symlinks(const char *path_with_prefix, const char *root, unsigned flags, char **ret);
 
 int chase_symlinks_and_open(const char *path, const char *root, unsigned chase_flags, int open_flags, char **ret_path);