undef/git-commit-vandalism
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Make the revision tracking track the object types too.

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This allows fsck to verify not just that an object exists, but
also that it has the type it was expected to have.
This commit is contained in:
Linus Torvalds 2005-04-17 16:19:32 -07:00
parent d0d7cbe730
commit 08ca0b04ba
3 changed files with 29 additions and 23 deletions
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24
fsck-cache.c
View File

@ -17,33 +17,33 @@ static void check_connectivity(void)
struct revision *rev = revs[i];
if (show_unreachable && !(rev->flags & REACHABLE)) {
printf("unreachable %s\n", sha1_to_hex(rev->sha1));
printf("unreachable %s %s\n", rev->tag, sha1_to_hex(rev->sha1));
continue;
}
switch (rev->flags & (SEEN | USED)) {
case 0:
printf("bad %s\n", sha1_to_hex(rev->sha1));
printf("bad %s %s\n", rev->tag, sha1_to_hex(rev->sha1));
break;
case USED:
printf("missing %s\n", sha1_to_hex(rev->sha1));
printf("missing %s, %s\n", rev->tag, sha1_to_hex(rev->sha1));
break;
case SEEN:
printf("dangling %s\n", sha1_to_hex(rev->sha1));
printf("dangling %s %s\n", rev->tag, sha1_to_hex(rev->sha1));
break;
}
}
}
static void mark_needs_sha1(unsigned char *parent, const char * tag, unsigned char *child)
static void mark_needs_sha1(unsigned char *parent, const char *ptag, unsigned char *child, const char *ctag)
{
struct revision * child_rev = add_relationship(lookup_rev(parent), child);
struct revision * child_rev = add_relationship(lookup_rev(parent, ptag), child, ctag);
child_rev->flags |= USED;
}
static int mark_sha1_seen(unsigned char *sha1, char *tag)
static int mark_sha1_seen(unsigned char *sha1, const char *tag)
{
struct revision *rev = lookup_rev(sha1);
struct revision *rev = lookup_rev(sha1, tag);
rev->flags |= SEEN;
return 0;
@ -69,7 +69,7 @@ static int fsck_tree(unsigned char *sha1, void *data, unsigned long size)
data += len + 20;
size -= len + 20;
mark_needs_sha1(sha1, S_ISDIR(mode) ? "tree" : "blob", file_sha1);
mark_needs_sha1(sha1, "tree", file_sha1, S_ISDIR(mode) ? "tree" : "blob");
}
return 0;
}
@ -84,13 +84,13 @@ static int fsck_commit(unsigned char *sha1, void *data, unsigned long size)
return -1;
if (get_sha1_hex(data + 5, tree_sha1) < 0)
return -1;
mark_needs_sha1(sha1, "tree", tree_sha1);
mark_needs_sha1(sha1, "commit", tree_sha1, "tree");
data += 5 + 40 + 1; /* "tree " + <hex sha1> + '\n' */
parents = 0;
while (!memcmp(data, "parent ", 7)) {
if (get_sha1_hex(data + 7, parent_sha1) < 0)
return -1;
mark_needs_sha1(sha1, "commit", parent_sha1);
mark_needs_sha1(sha1, "commit", parent_sha1, "commit");
data += 7 + 40 + 1; /* "parent " + <hex sha1> + '\n' */
parents++;
}
@ -186,7 +186,7 @@ int main(int argc, char **argv)
continue;
}
if (!get_sha1_hex(argv[i], head_sha1)) {
mark_reachable(lookup_rev(head_sha1), REACHABLE);
mark_reachable(lookup_rev(head_sha1, "commit"), REACHABLE);
heads++;
continue;
}

6
rev-tree.c
View File

@ -37,7 +37,7 @@ static void read_cache_file(const char *path)
break;
if (get_sha1_hex(buf+1, sha1))
break;
rev = lookup_rev(sha1);
rev = lookup_rev(sha1, "commit");
rev->flags |= SEEN;
rev->date = date;
@ -46,7 +46,7 @@ static void read_cache_file(const char *path)
unsigned char parent[20];
if (get_sha1_hex(buf + 1, parent))
break;
add_relationship(rev, parent);
add_relationship(rev, parent, "commit");
}
}
fclose(file);
@ -127,7 +127,7 @@ int main(int argc, char **argv)
* Now we have the maximal tree. Walk the different sha files back to the root.
*/
for (i = 0; i < nr; i++)
mark_reachable(lookup_rev(sha1[i]), 1 << i);
mark_reachable(lookup_rev(sha1[i], "commit"), 1 << i);
/*
* Now print out the results..

22
revision.h
View File

@ -25,6 +25,7 @@ struct revision {
unsigned char sha1[20];
unsigned long date;
struct parent *parent;
char tag[1];
};
static struct revision **revs;
@ -51,13 +52,17 @@ static int find_rev(unsigned char *sha1)
return -first-1;
}
static struct revision *lookup_rev(unsigned char *sha1)
static struct revision *lookup_rev(unsigned char *sha1, const char *tag)
{
int pos = find_rev(sha1);
struct revision *n;
if (pos >= 0)
return revs[pos];
if (pos >= 0) {
n = revs[pos];
if (strcmp(n->tag, tag))
error("expected tag %s on object %s: got %s", tag, sha1_to_hex(sha1), n->tag);
return n;
}
pos = -pos-1;
@ -65,11 +70,12 @@ static struct revision *lookup_rev(unsigned char *sha1)
rev_allocs = alloc_nr(rev_allocs);
revs = realloc(revs, rev_allocs * sizeof(struct revision *));
}
n = malloc(sizeof(struct revision));
n = malloc(sizeof(struct revision) + strlen(tag));
n->flags = 0;
memcpy(n->sha1, sha1, 20);
n->parent = NULL;
strcpy(n->tag, tag);
/* Insert it into the right place */
memmove(revs + pos + 1, revs + pos, (nr_revs - pos) * sizeof(struct revision *));
@ -79,9 +85,9 @@ static struct revision *lookup_rev(unsigned char *sha1)
return n;
}
static struct revision *add_relationship(struct revision *rev, unsigned char *needs)
static struct revision *add_relationship(struct revision *rev, unsigned char *needs, const char *tag)
{
struct revision *parent_rev = lookup_rev(needs);
struct revision *parent_rev = lookup_rev(needs, tag);
struct parent **pp = &rev->parent, *p;
while ((p = *pp) != NULL) {
@ -131,7 +137,7 @@ static unsigned long parse_commit_date(const char *buf)
static struct revision * parse_commit(unsigned char *sha1)
{
struct revision *rev = lookup_rev(sha1);
struct revision *rev = lookup_rev(sha1, "commit");
if (!(rev->flags & SEEN)) {
void *buffer, *bufptr;
@ -145,7 +151,7 @@ static struct revision * parse_commit(unsigned char *sha1)
die("%s is not a commit object", sha1_to_hex(sha1));
bufptr += 46; /* "tree " + "hex sha1" + "\n" */
while (!memcmp(bufptr, "parent ", 7) && !get_sha1_hex(bufptr+7, parent)) {
add_relationship(rev, parent);
add_relationship(rev, parent, "commit");
parse_commit(parent);
bufptr += 48; /* "parent " + "hex sha1" + "\n" */
}