From 5fb87c4b6582ddb0a0ab1f31300eae69ab963afb Mon Sep 17 00:00:00 2001
From: Hans-Peter Deifel <hpd@hpdeifel.de>
Date: Tue, 3 Mar 2015 00:35:08 +0100
Subject: [PATCH] tmpfiles: quietly ignore ACLs on unsupported filesystems

A warning is printed if ACLs cannot be retrieved for any reason other
than -ENOSYS. For -ENOSYS, debug log is printed.

(cherry picked from commit d873e8778c92014c02a9122852758b436fa95c0e)
---
 src/tmpfiles/tmpfiles.c | 36 ++++++++++++++++++++----------------
 1 file changed, 20 insertions(+), 16 deletions(-)

diff --git a/src/tmpfiles/tmpfiles.c b/src/tmpfiles/tmpfiles.c
index 88ba7e46a2..187997e1f4 100644
--- a/src/tmpfiles/tmpfiles.c
+++ b/src/tmpfiles/tmpfiles.c
@@ -704,6 +704,9 @@ static int path_set_acl(const char *path, acl_type_t type, acl_t acl, bool modif
         int r;
         _cleanup_(acl_free_charpp) char *t = NULL;
 
+        /* Returns 0 for success, positive error if already warned,
+         * negative error otherwise. */
+
         if (modify) {
                 r = acls_for_file(path, type, acl, &dup);
                 if (r < 0)
@@ -731,35 +734,36 @@ static int path_set_acl(const char *path, acl_type_t type, acl_t acl, bool modif
 
         r = acl_set_file(path, type, dup);
         if (r < 0)
-                return log_error_errno(-errno,
-                                       "Setting %s ACL \"%s\" on %s failed: %m",
-                                       type == ACL_TYPE_ACCESS ? "access" : "default",
-                                       strna(t), path);
+                return -log_error_errno(errno,
+                                        "Setting %s ACL \"%s\" on %s failed: %m",
+                                        type == ACL_TYPE_ACCESS ? "access" : "default",
+                                        strna(t), path);
+
         return 0;
 }
 #endif
 
 static int path_set_acls(Item *item, const char *path) {
+        int r = 0;
 #ifdef HAVE_ACL
-        int r;
-
         assert(item);
         assert(path);
 
-        if (item->acl_access) {
+        if (item->acl_access)
                 r = path_set_acl(path, ACL_TYPE_ACCESS, item->acl_access, item->force);
-                if (r < 0)
-                        return r;
-        }
 
-        if (item->acl_default) {
+        if (r == 0 && item->acl_default)
                 r = path_set_acl(path, ACL_TYPE_DEFAULT, item->acl_default, item->force);
-                if (r < 0)
-                        return r;
-        }
-#endif
 
-        return 0;
+        if (r > 0)
+                return -r; /* already warned */
+        else if (r == -ENOTSUP) {
+                log_debug_errno(r, "ACLs not supported by file system at %s", path);
+                return 0;
+        } else if (r < 0)
+                log_error_errno(r, "ACL operation on \"%s\" failed: %m", path);
+#endif
+        return r;
 }
 
 static int write_one_file(Item *i, const char *path) {