lstat_cache(): print a warning if doing ping-pong between cache types

diff --git a/builtin-add.c b/builtin-add.c
index 1834e2d7cd50ec7688ec6c5c7d2c79c8513ed132..a23ad967737cc3473e28a954f5b2125b6aad794f 100644 (file)
--- a/builtin-add.c
+++ b/builtin-add.c
@@ -23,7 +23,7 @@ static void fill_pathspec_matches(const char **pathspec, char *seen, int specs)
        int num_unmatched = 0, i;
 
        /*
-        * Since we are walking the index as if we are warlking the directory,
+        * Since we are walking the index as if we were walking the directory,
         * we have to mark the matched pathspec as seen; otherwise we will
         * mistakenly think that the user gave a pathspec that did not match
         * anything.
@@ -68,6 +68,33 @@ static void prune_directory(struct dir_struct *dir, const char **pathspec, int p
         free(seen);
 }
 
+static void treat_gitlinks(const char **pathspec)
+{
+       int i;
+
+       if (!pathspec || !*pathspec)
+               return;
+
+       for (i = 0; i < active_nr; i++) {
+               struct cache_entry *ce = active_cache[i];
+               if (S_ISGITLINK(ce->ce_mode)) {
+                       int len = ce_namelen(ce), j;
+                       for (j = 0; pathspec[j]; j++) {
+                               int len2 = strlen(pathspec[j]);
+                               if (len2 <= len || pathspec[j][len] != '/' ||
+                                   memcmp(ce->name, pathspec[j], len))
+                                       continue;
+                               if (len2 == len + 1)
+                                       /* strip trailing slash */
+                                       pathspec[j] = xstrndup(ce->name, len);
+                               else
+                                       die ("Path '%s' is in submodule '%.*s'",
+                                               pathspec[j], len, ce->name);
+                       }
+               }
+       }
+}
+
 static void fill_directory(struct dir_struct *dir, const char **pathspec,
                int ignored_too)
 {
@@ -118,6 +145,16 @@ static const char **validate_pathspec(int argc, const char **argv, const char *p
 {
        const char **pathspec = get_pathspec(prefix, argv);
 
+       if (pathspec) {
+               const char **p;
+               for (p = pathspec; *p; p++) {
+                       if (has_symlink_leading_path(*p, strlen(*p))) {
+                               int len = prefix ? strlen(prefix) : 0;
+                               die("'%s' is beyond a symbolic link", *p + len);
+                       }
+               }
+       }
+
        return pathspec;
 }
 
@@ -156,7 +193,7 @@ static const char ignore_error[] =
 "The following paths are ignored by one of your .gitignore files:\n";
 
 static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
-static int ignore_add_errors, addremove;
+static int ignore_add_errors, addremove, intent_to_add;
 
 static struct option builtin_add_options[] = {
        OPT__DRY_RUN(&show_only),
@@ -166,6 +203,7 @@ static struct option builtin_add_options[] = {
        OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
        OPT_BOOLEAN('f', "force", &ignored_too, "allow adding otherwise ignored files"),
        OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
+       OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, "record only the fact that the path will be added later"),
        OPT_BOOLEAN('A', "all", &addremove, "add all, noticing removal of tracked files"),
        OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
        OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
@@ -236,6 +274,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 
        flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
                 (show_only ? ADD_CACHE_PRETEND : 0) |
+                (intent_to_add ? ADD_CACHE_INTENT : 0) |
                 (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
                 (!(addremove || take_worktree_changes)
                  ? ADD_CACHE_IGNORE_REMOVAL : 0));
@@ -245,10 +284,11 @@ int cmd_add(int argc, const char **argv, const char *prefix)
                fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
                return 0;
        }
-       pathspec = get_pathspec(prefix, argv);
+       pathspec = validate_pathspec(argc, argv, prefix);
 
        if (read_cache() < 0)
                die("index file corrupt");
+       treat_gitlinks(pathspec);
 
        if (add_new_files)
                /* This picks up the paths that are not tracked */