fully resolve symlinks when creating lockfiles

diff --git a/builtin-fsck.c b/builtin-fsck.c
index 944a496650b6e13d2684bb221ee8bc7aadd78d6f..8d12287f037c499acad26ea81acab73490c38d5c 100644 (file)
--- a/builtin-fsck.c
+++ b/builtin-fsck.c
@@ -1,3 +1,4 @@
+#include "builtin.h"
 #include "cache.h"
 #include "commit.h"
 #include "tree.h"
@@ -20,6 +21,7 @@ static int check_strict;
 static int keep_cache_objects;
 static unsigned char head_sha1[20];
 static int errors_found;
+static int write_lost_and_found;
 static int verbose;
 #define ERROR_OBJECT 01
 #define ERROR_REACHABLE 02
@@ -138,6 +140,31 @@ static void check_unreachable_object(struct object *obj)
        if (!obj->used) {
                printf("dangling %s %s\n", typename(obj->type),
                       sha1_to_hex(obj->sha1));
+               if (write_lost_and_found) {
+                       char *filename = git_path("lost-found/%s/%s",
+                               obj->type == OBJ_COMMIT ? "commit" : "other",
+                               sha1_to_hex(obj->sha1));
+                       FILE *f;
+
+                       if (safe_create_leading_directories(filename)) {
+                               error("Could not create lost-found");
+                               return;
+                       }
+                       if (!(f = fopen(filename, "w")))
+                               die("Could not open %s", filename);
+                       if (obj->type == OBJ_BLOB) {
+                               enum object_type type;
+                               unsigned long size;
+                               char *buf = read_sha1_file(obj->sha1,
+                                               &type, &size);
+                               if (buf) {
+                                       fwrite(buf, size, 1, f);
+                                       free(buf);
+                               }
+                       } else
+                               fprintf(f, "%s\n", sha1_to_hex(obj->sha1));
+                       fclose(f);
+               }
                return;
        }
 
@@ -643,7 +670,7 @@ static const char fsck_usage[] =
 "git-fsck [--tags] [--root] [[--unreachable] [--cache] [--full] "
 "[--strict] [--verbose] <head-sha1>*]";
 
-int cmd_fsck(int argc, char **argv, const char *prefix)
+int cmd_fsck(int argc, const char **argv, const char *prefix)
 {
        int i, heads;
 
@@ -685,6 +712,12 @@ int cmd_fsck(int argc, char **argv, const char *prefix)
                        verbose = 1;
                        continue;
                }
+               if (!strcmp(arg, "--lost-found")) {
+                       check_full = 1;
+                       include_reflogs = 0;
+                       write_lost_and_found = 1;
+                       continue;
+               }
                if (*arg == '-')
                        usage(fsck_usage);
        }