Merge pull request #3151 from keszybz/pr3149-2

 Assorted fixes #3149 + one commit tacked on top

3 files changed, 42 insertions, 11 deletions

diff --git a/src/basic/copy.c b/src/basic/copy.c
index 03487a6878..3001234a01 100644
--- a/src/basic/copy.c
+++ b/src/basic/copy.c
@@ -364,7 +364,7 @@ static int fd_copy_directory(
                         q = fd_copy_symlink(dirfd(d), de->d_name, &buf, fdt, de->d_name);
                 else if (S_ISFIFO(buf.st_mode))
                         q = fd_copy_fifo(dirfd(d), de->d_name, &buf, fdt, de->d_name);
-                else if (S_ISBLK(buf.st_mode) || S_ISCHR(buf.st_mode))
+                else if (S_ISBLK(buf.st_mode) || S_ISCHR(buf.st_mode) || S_ISSOCK(buf.st_mode))
                         q = fd_copy_node(dirfd(d), de->d_name, &buf, fdt, de->d_name);
                 else
                         q = -EOPNOTSUPP;
@@ -396,7 +396,7 @@ int copy_tree_at(int fdf, const char *from, int fdt, const char *to, bool merge)
                 return fd_copy_symlink(fdf, from, &st, fdt, to);
         else if (S_ISFIFO(st.st_mode))
                 return fd_copy_fifo(fdf, from, &st, fdt, to);
-        else if (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode))
+        else if (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode) || S_ISSOCK(st.st_mode))
                 return fd_copy_node(fdf, from, &st, fdt, to);
         else
                 return -EOPNOTSUPP;
diff --git a/src/basic/path-util.c b/src/basic/path-util.c
index 100e3f5af2..b2fa81a294 100644
--- a/src/basic/path-util.c
+++ b/src/basic/path-util.c
@@ -772,6 +772,19 @@ bool hidden_or_backup_file(const char *filename) {
         if (!p)
                 return false;
 
+        /* Please, let's not add more entries to the list below. If external projects think it's a good idea to come up
+         * with always new suffixes and that everybody else should just adjust to that, then it really should be on
+         * them. Hence, in future, let's not add any more entries. Instead, let's ask those packages to instead adopt
+         * one of the generic suffixes/prefixes for hidden files or backups, possibly augmented with an additional
+         * string. Specifically: there's now:
+         *
+         *    The generic suffixes "~" and ".bak" for backup files
+         *    The generic prefix "." for hidden files
+         *
+         * Thus, if a new package manager "foopkg" wants its own set of ".foopkg-new", ".foopkg-old", ".foopkg-dist"
+         * or so registered, let's refuse that and ask them to use ".foopkg.new", ".foopkg.old" or ".foopkg~" instead.
+         */
+
         return STR_IN_SET(p + 1,
                           "rpmnew",
                           "rpmsave",
@@ -786,7 +799,10 @@ bool hidden_or_backup_file(const char *filename) {
                           "ucf-new",
                           "ucf-old",
                           "ucf-dist",
-                          "swp");
+                          "swp",
+                          "bak",
+                          "old",
+                          "new");
 }
 
 bool is_device_path(const char *path) {
diff --git a/src/test/test-copy.c b/src/test/test-copy.c
index cb437754b4..68154fc4e8 100644
--- a/src/test/test-copy.c
+++ b/src/test/test-copy.c
@@ -95,6 +95,8 @@ static void test_copy_tree(void) {
         char **links = STRV_MAKE("link", "file",
                                  "link2", "dir1/file");
         char **p, **link;
+        const char *unixsockp;
+        struct stat st;
 
         log_info("%s", __func__);
 
@@ -102,26 +104,34 @@ static void test_copy_tree(void) {
         (void) rm_rf(original_dir, REMOVE_ROOT|REMOVE_PHYSICAL);
 
         STRV_FOREACH(p, files) {
-                char *f = strjoina(original_dir, *p);
+                _cleanup_free_ char *f;
+
+                assert_se(f = strappend(original_dir, *p));
 
                 assert_se(mkdir_parents(f, 0755) >= 0);
                 assert_se(write_string_file(f, "file", WRITE_STRING_FILE_CREATE) == 0);
         }
 
         STRV_FOREACH_PAIR(link, p, links) {
-                char *f = strjoina(original_dir, *p);
-                char *l = strjoina(original_dir, *link);
+                _cleanup_free_ char *f, *l;
+
+                assert_se(f = strappend(original_dir, *p));
+                assert_se(l = strappend(original_dir, *link));
 
                 assert_se(mkdir_parents(l, 0755) >= 0);
                 assert_se(symlink(f, l) == 0);
         }
 
+        unixsockp = strjoina(original_dir, "unixsock");
+        assert_se(mknod(unixsockp, S_IFSOCK|0644, 0) >= 0);
+
         assert_se(copy_tree(original_dir, copy_dir, true) == 0);
 
         STRV_FOREACH(p, files) {
-                _cleanup_free_ char *buf = NULL;
+                _cleanup_free_ char *buf = NULL, *f;
                 size_t sz = 0;
-                char *f = strjoina(copy_dir, *p);
+
+                assert_se(f = strappend(copy_dir, *p));
 
                 assert_se(access(f, F_OK) == 0);
                 assert_se(read_full_file(f, &buf, &sz) == 0);
@@ -129,14 +139,19 @@ static void test_copy_tree(void) {
         }
 
         STRV_FOREACH_PAIR(link, p, links) {
-                _cleanup_free_ char *target = NULL;
-                char *f = strjoina(original_dir, *p);
-                char *l = strjoina(copy_dir, *link);
+                _cleanup_free_ char *target = NULL, *f, *l;
+
+                assert_se(f = strjoin(original_dir, *p, NULL));
+                assert_se(l = strjoin(copy_dir, *link, NULL));
 
                 assert_se(readlink_and_canonicalize(l, &target) == 0);
                 assert_se(path_equal(f, target));
         }
 
+        unixsockp = strjoina(copy_dir, "unixsock");
+        assert_se(stat(unixsockp, &st) >= 0);
+        assert_se(S_ISSOCK(st.st_mode));
+
         assert_se(copy_tree(original_dir, copy_dir, false) < 0);
         assert_se(copy_tree("/tmp/inexistent/foo/bar/fsdoi", copy_dir, false) < 0);