Print out the edge commits for each packfile in fast-import.

diff --git a/fsck-objects.c b/fsck-objects.c
index 31e00d84b30f95c713b3dc6a654b4ef8459c6729..81f00db90b2f31d5362654a3e6a86f9cb93cf474 100644 (file)
--- a/fsck-objects.c
+++ b/fsck-objects.c
@@ -1,6 +1,3 @@
-#include <sys/types.h>
-#include <dirent.h>
-
 #include "cache.h"
 #include "commit.h"
 #include "tree.h"
@@ -293,7 +290,7 @@ static int fsck_sha1(unsigned char *sha1)
 {
        struct object *obj = parse_object(sha1);
        if (!obj)
-               return error("%s: object not found", sha1_to_hex(sha1));
+               return error("%s: object corrupt or missing", sha1_to_hex(sha1));
        if (obj->flags & SEEN)
                return 0;
        obj->flags |= SEEN;
@@ -356,7 +353,7 @@ static void add_sha1_list(unsigned char *sha1, unsigned long ino)
        int nr;
 
        entry->ino = ino;
-       memcpy(entry->sha1, sha1, 20);
+       hashcpy(entry->sha1, sha1);
        nr = sha1_list.nr;
        if (nr == MAX_SHA1_ENTRIES) {
                fsck_sha1_list();
@@ -402,7 +399,28 @@ static void fsck_dir(int i, char *path)
 
 static int default_refs;
 
-static int fsck_handle_ref(const char *refname, const unsigned char *sha1)
+static int fsck_handle_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
+               const char *email, unsigned long timestamp, int tz,
+               const char *message, void *cb_data)
+{
+       struct object *obj;
+
+       if (!is_null_sha1(osha1)) {
+               obj = lookup_object(osha1);
+               if (obj) {
+                       obj->used = 1;
+                       mark_reachable(obj, REACHABLE);
+               }
+       }
+       obj = lookup_object(nsha1);
+       if (obj) {
+               obj->used = 1;
+               mark_reachable(obj, REACHABLE);
+       }
+       return 0;
+}
+
+static int fsck_handle_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
 {
        struct object *obj;
 
@@ -419,14 +437,32 @@ static int fsck_handle_ref(const char *refname, const unsigned char *sha1)
        default_refs++;
        obj->used = 1;
        mark_reachable(obj, REACHABLE);
+
+       for_each_reflog_ent(refname, fsck_handle_reflog_ent, NULL);
+
        return 0;
 }
 
 static void get_default_heads(void)
 {
-       for_each_ref(fsck_handle_ref);
-       if (!default_refs)
-               die("No default references");
+       for_each_ref(fsck_handle_ref, NULL);
+
+       /*
+        * Not having any default heads isn't really fatal, but
+        * it does mean that "--unreachable" no longer makes any
+        * sense (since in this case everything will obviously
+        * be unreachable by definition.
+        *
+        * Showing dangling objects is valid, though (as those
+        * dangling objects are likely lost heads).
+        *
+        * So we just print a warning about it, and clear the
+        * "show_unreachable" flag.
+        */
+       if (!default_refs) {
+               error("No default references");
+               show_unreachable = 0;
+       }
 }
 
 static void fsck_object_dir(const char *path)
@@ -443,15 +479,14 @@ static void fsck_object_dir(const char *path)
 static int fsck_head_link(void)
 {
        unsigned char sha1[20];
-       const char *git_HEAD = strdup(git_path("HEAD"));
-       const char *git_refs_heads_master = resolve_ref(git_HEAD, sha1, 1);
-       int pfxlen = strlen(git_HEAD) - 4; /* strip .../.git/ part */
+       int flag;
+       const char *head_points_at = resolve_ref("HEAD", sha1, 1, &flag);
 
-       if (!git_refs_heads_master)
+       if (!head_points_at || !(flag & REF_ISSYMREF))
                return error("HEAD is not a symbolic ref");
-       if (strncmp(git_refs_heads_master + pfxlen, "refs/heads/", 11))
+       if (strncmp(head_points_at, "refs/heads/", 11))
                return error("HEAD points to something strange (%s)",
-                            git_refs_heads_master + pfxlen);
+                            head_points_at);
        if (is_null_sha1(sha1))
                return error("HEAD: not a valid git pointer");
        return 0;