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-rw-r--r--cache-tree.c99
1 files changed, 63 insertions, 36 deletions
diff --git a/cache-tree.c b/cache-tree.c
index 7fa524a113..feace8bd90 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -1,4 +1,5 @@
#include "cache.h"
+#include "lockfile.h"
#include "tree.h"
#include "tree-walk.h"
#include "cache-tree.h"
@@ -98,7 +99,7 @@ struct cache_tree_sub *cache_tree_sub(struct cache_tree *it, const char *path)
return find_subtree(it, path, pathlen, 1);
}
-void cache_tree_invalidate_path(struct cache_tree *it, const char *path)
+static int do_invalidate_path(struct cache_tree *it, const char *path)
{
/* a/b/c
* ==> invalidate self
@@ -116,7 +117,7 @@ void cache_tree_invalidate_path(struct cache_tree *it, const char *path)
#endif
if (!it)
- return;
+ return 0;
slash = strchrnul(path, '/');
namelen = slash - path;
it->entry_count = -1;
@@ -137,14 +138,21 @@ void cache_tree_invalidate_path(struct cache_tree *it, const char *path)
(it->subtree_nr - pos - 1));
it->subtree_nr--;
}
- return;
+ return 1;
}
down = find_subtree(it, path, namelen, 0);
if (down)
- cache_tree_invalidate_path(down->cache_tree, slash + 1);
+ do_invalidate_path(down->cache_tree, slash + 1);
+ return 1;
}
-static int verify_cache(const struct cache_entry * const *cache,
+void cache_tree_invalidate_path(struct index_state *istate, const char *path)
+{
+ if (do_invalidate_path(istate->cache_tree, path))
+ istate->cache_changed |= CACHE_TREE_CHANGED;
+}
+
+static int verify_cache(struct cache_entry **cache,
int entries, int flags)
{
int i, funny;
@@ -229,7 +237,7 @@ int cache_tree_fully_valid(struct cache_tree *it)
}
static int update_one(struct cache_tree *it,
- const struct cache_entry * const *cache,
+ struct cache_entry **cache,
int entries,
const char *base,
int baselen,
@@ -239,9 +247,12 @@ static int update_one(struct cache_tree *it,
struct strbuf buffer;
int missing_ok = flags & WRITE_TREE_MISSING_OK;
int dryrun = flags & WRITE_TREE_DRY_RUN;
+ int repair = flags & WRITE_TREE_REPAIR;
int to_invalidate = 0;
int i;
+ assert(!(dryrun && repair));
+
*skip_count = 0;
if (0 <= it->entry_count && has_sha1_file(it->sha1))
@@ -292,6 +303,8 @@ static int update_one(struct cache_tree *it,
flags);
if (subcnt < 0)
return subcnt;
+ if (!subcnt)
+ die("index cache-tree records empty sub-tree");
i += subcnt;
sub->count = subcnt; /* to be used in the next loop */
*skip_count += subskip;
@@ -313,6 +326,7 @@ static int update_one(struct cache_tree *it,
int pathlen, entlen;
const unsigned char *sha1;
unsigned mode;
+ int expected_missing = 0;
path = ce->name;
pathlen = ce_namelen(ce);
@@ -329,8 +343,10 @@ static int update_one(struct cache_tree *it,
i += sub->count;
sha1 = sub->cache_tree->sha1;
mode = S_IFDIR;
- if (sub->cache_tree->entry_count < 0)
+ if (sub->cache_tree->entry_count < 0) {
to_invalidate = 1;
+ expected_missing = 1;
+ }
}
else {
sha1 = ce->sha1;
@@ -340,6 +356,8 @@ static int update_one(struct cache_tree *it,
}
if (mode != S_IFGITLINK && !missing_ok && !has_sha1_file(sha1)) {
strbuf_release(&buffer);
+ if (expected_missing)
+ return -1;
return error("invalid object %06o %s for '%.*s'",
mode, sha1_to_hex(sha1), entlen+baselen, path);
}
@@ -374,7 +392,14 @@ static int update_one(struct cache_tree *it,
#endif
}
- if (dryrun)
+ if (repair) {
+ unsigned char sha1[20];
+ hash_sha1_file(buffer.buf, buffer.len, tree_type, sha1);
+ if (has_sha1_file(sha1))
+ hashcpy(it->sha1, sha1);
+ else
+ to_invalidate = 1;
+ } else if (dryrun)
hash_sha1_file(buffer.buf, buffer.len, tree_type, it->sha1);
else if (write_sha1_file(buffer.buf, buffer.len, tree_type, it->sha1)) {
strbuf_release(&buffer);
@@ -391,18 +416,19 @@ static int update_one(struct cache_tree *it,
return i;
}
-int cache_tree_update(struct cache_tree *it,
- const struct cache_entry * const *cache,
- int entries,
- int flags)
+int cache_tree_update(struct index_state *istate, int flags)
{
- int i, skip;
- i = verify_cache(cache, entries, flags);
+ struct cache_tree *it = istate->cache_tree;
+ struct cache_entry **cache = istate->cache;
+ int entries = istate->cache_nr;
+ int skip, i = verify_cache(cache, entries, flags);
+
if (i)
return i;
i = update_one(it, cache, entries, "", 0, &skip, flags);
if (i < 0)
return i;
+ istate->cache_changed |= CACHE_TREE_CHANGED;
return 0;
}
@@ -566,7 +592,7 @@ static struct cache_tree *cache_tree_find(struct cache_tree *it, const char *pat
return it;
}
-int write_cache_as_tree(unsigned char *sha1, int flags, const char *prefix)
+int write_index_as_tree(unsigned char *sha1, struct index_state *index_state, const char *index_path, int flags, const char *prefix)
{
int entries, was_valid, newfd;
struct lock_file *lock_file;
@@ -577,26 +603,23 @@ int write_cache_as_tree(unsigned char *sha1, int flags, const char *prefix)
*/
lock_file = xcalloc(1, sizeof(struct lock_file));
- newfd = hold_locked_index(lock_file, 1);
+ newfd = hold_lock_file_for_update(lock_file, index_path, LOCK_DIE_ON_ERROR);
- entries = read_cache();
+ entries = read_index_from(index_state, index_path);
if (entries < 0)
return WRITE_TREE_UNREADABLE_INDEX;
if (flags & WRITE_TREE_IGNORE_CACHE_TREE)
- cache_tree_free(&(active_cache_tree));
+ cache_tree_free(&index_state->cache_tree);
- if (!active_cache_tree)
- active_cache_tree = cache_tree();
+ if (!index_state->cache_tree)
+ index_state->cache_tree = cache_tree();
- was_valid = cache_tree_fully_valid(active_cache_tree);
+ was_valid = cache_tree_fully_valid(index_state->cache_tree);
if (!was_valid) {
- if (cache_tree_update(active_cache_tree,
- (const struct cache_entry * const *)active_cache,
- active_nr, flags) < 0)
+ if (cache_tree_update(index_state, flags) < 0)
return WRITE_TREE_UNMERGED_INDEX;
if (0 <= newfd) {
- if (!write_cache(newfd, active_cache, active_nr) &&
- !commit_lock_file(lock_file))
+ if (!write_locked_index(index_state, lock_file, COMMIT_LOCK))
newfd = -1;
}
/* Not being able to write is fine -- we are only interested
@@ -608,14 +631,14 @@ int write_cache_as_tree(unsigned char *sha1, int flags, const char *prefix)
}
if (prefix) {
- struct cache_tree *subtree =
- cache_tree_find(active_cache_tree, prefix);
+ struct cache_tree *subtree;
+ subtree = cache_tree_find(index_state->cache_tree, prefix);
if (!subtree)
return WRITE_TREE_PREFIX_ERROR;
hashcpy(sha1, subtree->sha1);
}
else
- hashcpy(sha1, active_cache_tree->sha1);
+ hashcpy(sha1, index_state->cache_tree->sha1);
if (0 <= newfd)
rollback_lock_file(lock_file);
@@ -623,6 +646,11 @@ int write_cache_as_tree(unsigned char *sha1, int flags, const char *prefix)
return 0;
}
+int write_cache_as_tree(unsigned char *sha1, int flags, const char *prefix)
+{
+ return write_index_as_tree(sha1, &the_index, get_index_file(), flags, prefix);
+}
+
static void prime_cache_tree_rec(struct cache_tree *it, struct tree *tree)
{
struct tree_desc desc;
@@ -649,11 +677,12 @@ static void prime_cache_tree_rec(struct cache_tree *it, struct tree *tree)
it->entry_count = cnt;
}
-void prime_cache_tree(struct cache_tree **it, struct tree *tree)
+void prime_cache_tree(struct index_state *istate, struct tree *tree)
{
- cache_tree_free(it);
- *it = cache_tree();
- prime_cache_tree_rec(*it, tree);
+ cache_tree_free(&istate->cache_tree);
+ istate->cache_tree = cache_tree();
+ prime_cache_tree_rec(istate->cache_tree, tree);
+ istate->cache_changed |= CACHE_TREE_CHANGED;
}
/*
@@ -692,7 +721,5 @@ int update_main_cache_tree(int flags)
{
if (!the_index.cache_tree)
the_index.cache_tree = cache_tree();
- return cache_tree_update(the_index.cache_tree,
- (const struct cache_entry * const *)the_index.cache,
- the_index.cache_nr, flags);
+ return cache_tree_update(&the_index, flags);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 12:20:19 +0000