X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=fsck-cache.c;h=3fbcd2c7e99fa5e27fa7edad0e2bd65d3b557fe7;hb=13e897e58072678cdae3ec1db51cc91110dc559d;hp=c35acaa82c93824f952327e12727d0c92edc5bd7;hpb=4e6616ab77ed6a53f857d4b1082c4dc4140f34f5;p=git.git

diff --git a/fsck-cache.c b/fsck-cache.c
index c35acaa8..3fbcd2c7 100644
--- a/fsck-cache.c
+++ b/fsck-cache.c
@@ -3,18 +3,49 @@
 #include <sys/types.h>
 #include <dirent.h>
 
-/*
- * These two functions should build up a graph in memory about
- * what objects we've referenced, and found, and types..
- *
- * Right now we don't do that kind of reachability checking. Yet.
- */
-static void mark_needs_sha1(unsigned char *parent, const char * type, unsigned char *child)
+#include "revision.h"
+
+static int show_unreachable = 0;
+static unsigned char head_sha1[20];
+
+static void check_connectivity(void)
+{
+	int i;
+
+	/* Look up all the requirements, warn about missing objects.. */
+	for (i = 0; i < nr_revs; i++) {
+		struct revision *rev = revs[i];
+
+		if (show_unreachable && !(rev->flags & REACHABLE)) {
+			printf("unreachable %s\n", sha1_to_hex(rev->sha1));
+			continue;
+		}
+
+		switch (rev->flags & (SEEN | USED)) {
+		case 0:
+			printf("bad %s\n", sha1_to_hex(rev->sha1));
+			break;
+		case USED:
+			printf("missing %s\n", sha1_to_hex(rev->sha1));
+			break;
+		case SEEN:
+			printf("dangling %s\n", sha1_to_hex(rev->sha1));
+			break;
+		}
+	}
+}
+
+static void mark_needs_sha1(unsigned char *parent, const char * tag, unsigned char *child)
 {
+	struct revision * child_rev = add_relationship(lookup_rev(parent), child);
+	child_rev->flags |= USED;
 }
 
 static int mark_sha1_seen(unsigned char *sha1, char *tag)
 {
+	struct revision *rev = lookup_rev(sha1);
+
+	rev->flags |= SEEN;
 	return 0;
 }
 
@@ -64,7 +95,7 @@ static int fsck_commit(unsigned char *sha1, void *data, unsigned long size)
 		parents++;
 	}
 	if (!parents)
-		printf("root: %s\n", sha1_to_hex(sha1));
+		printf("root %s\n", sha1_to_hex(sha1));
 	return 0;
 }
 
@@ -109,8 +140,7 @@ static int fsck_dir(int i, char *path)
 	struct dirent *de;
 
 	if (!dir) {
-		fprintf(stderr, "missing sha1 directory '%s'", path);
-		return -1;
+		return error("missing sha1 directory '%s'", path);
 	}
 
 	while ((de = readdir(dir)) != NULL) {
@@ -139,16 +169,38 @@ static int fsck_dir(int i, char *path)
 
 int main(int argc, char **argv)
 {
-	int i;
+	int i, heads;
 	char *sha1_dir;
 
-	if (argc != 1)
-		usage("fsck-cache");
 	sha1_dir = getenv(DB_ENVIRONMENT) ? : DEFAULT_DB_ENVIRONMENT;
 	for (i = 0; i < 256; i++) {
 		static char dir[4096];
 		sprintf(dir, "%s/%02x", sha1_dir, i);
 		fsck_dir(i, dir);
 	}
+
+	heads = 0;
+	for (i = 1; i < argc; i++) {
+		if (!strcmp(argv[i], "--unreachable")) {
+			show_unreachable = 1;
+			continue;
+		}
+		if (!get_sha1_hex(argv[i], head_sha1)) {
+			mark_reachable(lookup_rev(head_sha1));
+			heads++;
+			continue;
+		}
+		error("fsck-cache [[--unreachable] <head-sha1>*]");
+	}
+
+	if (!heads) {
+		if (show_unreachable) {
+			fprintf(stderr, "unable to do reachability without a head\n");
+			show_unreachable = 0; 
+		}
+		fprintf(stderr, "expect dangling commits - potential heads - due to lack of head information\n");
+	}
+
+	check_connectivity();
 	return 0;
 }