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Merge branch 'jk/path-name-safety-2.6' into jk/path-name-safety-2.7

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* jk/path-name-safety-2.6:
  list-objects: pass full pathname to callbacks
  list-objects: drop name_path entirely
  list-objects: convert name_path to a strbuf
  show_object_with_name: simplify by using path_name()
  http-push: stop using name_path
  tree-diff: catch integer overflow in combine_diff_path allocation
  add helpers for detecting size_t overflow
This commit is contained in:
Junio C Hamano 2016-03-16 10:42:32 -07:00
commit 55c45a7325
10 changed files with 46 additions and 142 deletions
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15
builtin/pack-objects.c
View File

@ -2285,21 +2285,11 @@ static void show_commit(struct commit *commit, void *data)
index_commit_for_bitmap(commit);
}
static void show_object(struct object *obj,
const struct name_path *path, const char *last,
void *data)
static void show_object(struct object *obj, const char *name, void *data)
{
char *name = path_name(path, last);
add_preferred_base_object(name);
add_object_entry(obj->oid.hash, obj->type, name, 0);
obj->flags |= OBJECT_ADDED;
/*
* We will have generated the hash from the name,
* but not saved a pointer to it - we can free it
*/
free((char *)name);
}
static void show_edge(struct commit *commit)
@ -2481,8 +2471,7 @@ static int get_object_list_from_bitmap(struct rev_info *revs)
}
static void record_recent_object(struct object *obj,
const struct name_path *path,
const char *last,
const char *name,
void *data)
{
sha1_array_append(&recent_objects, obj->oid.hash);

12
builtin/rev-list.c
View File

@ -177,9 +177,7 @@ static void finish_commit(struct commit *commit, void *data)
free_commit_buffer(commit);
}
static void finish_object(struct object *obj,
const struct name_path *path, const char *name,
void *cb_data)
static void finish_object(struct object *obj, const char *name, void *cb_data)
{
struct rev_list_info *info = cb_data;
if (obj->type == OBJ_BLOB && !has_object_file(&obj->oid))
@ -188,15 +186,13 @@ static void finish_object(struct object *obj,
parse_object(obj->oid.hash);
}
static void show_object(struct object *obj,
const struct name_path *path, const char *component,
void *cb_data)
static void show_object(struct object *obj, const char *name, void *cb_data)
{
struct rev_list_info *info = cb_data;
finish_object(obj, path, component, cb_data);
finish_object(obj, name, cb_data);
if (info->flags & REV_LIST_QUIET)
return;
show_object_with_name(stdout, obj, path, component);
show_object_with_name(stdout, obj, name);
}
static void show_edge(struct commit *commit)

23
http-push.c
View File

@ -1277,9 +1277,7 @@ static struct object_list **add_one_object(struct object *obj, struct object_lis
}
static struct object_list **process_blob(struct blob *blob,
struct object_list **p,
struct name_path *path,
const char *name)
struct object_list **p)
{
struct object *obj = &blob->object;
@ -1293,14 +1291,11 @@ static struct object_list **process_blob(struct blob *blob,
}
static struct object_list **process_tree(struct tree *tree,
struct object_list **p,
struct name_path *path,
const char *name)
struct object_list **p)
{
struct object *obj = &tree->object;
struct tree_desc desc;
struct name_entry entry;
struct name_path me;
obj->flags |= LOCAL;
@ -1310,21 +1305,17 @@ static struct object_list **process_tree(struct tree *tree,
die("bad tree object %s", oid_to_hex(&obj->oid));
obj->flags |= SEEN;
name = xstrdup(name);
p = add_one_object(obj, p);
me.up = path;
me.elem = name;
me.elem_len = strlen(name);
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry))
switch (object_type(entry.mode)) {
case OBJ_TREE:
p = process_tree(lookup_tree(entry.sha1), p, &me, name);
p = process_tree(lookup_tree(entry.sha1), p);
break;
case OBJ_BLOB:
p = process_blob(lookup_blob(entry.sha1), p, &me, name);
p = process_blob(lookup_blob(entry.sha1), p);
break;
default:
/* Subproject commit - not in this repository */
@ -1343,7 +1334,7 @@ static int get_delta(struct rev_info *revs, struct remote_lock *lock)
int count = 0;
while ((commit = get_revision(revs)) != NULL) {
p = process_tree(commit->tree, p, NULL, "");
p = process_tree(commit->tree, p);
commit->object.flags |= LOCAL;
if (!(commit->object.flags & UNINTERESTING))
count += add_send_request(&commit->object, lock);
@ -1362,11 +1353,11 @@ static int get_delta(struct rev_info *revs, struct remote_lock *lock)
continue;
}
if (obj->type == OBJ_TREE) {
p = process_tree((struct tree *)obj, p, NULL, name);
p = process_tree((struct tree *)obj, p);
continue;
}
if (obj->type == OBJ_BLOB) {
p = process_blob((struct blob *)obj, p, NULL, name);
p = process_blob((struct blob *)obj, p);
continue;
}
die("unknown pending object %s (%s)", oid_to_hex(&obj->oid), name);

40
list-objects.c
View File

@ -11,11 +11,12 @@
static void process_blob(struct rev_info *revs,
struct blob *blob,
show_object_fn show,
struct name_path *path,
struct strbuf *path,
const char *name,
void *cb_data)
{
struct object *obj = &blob->object;
size_t pathlen;
if (!revs->blob_objects)
return;
@ -24,7 +25,11 @@ static void process_blob(struct rev_info *revs,
if (obj->flags & (UNINTERESTING | SEEN))
return;
obj->flags |= SEEN;
show(obj, path, name, cb_data);
pathlen = path->len;
strbuf_addstr(path, name);
show(obj, path->buf, cb_data);
strbuf_setlen(path, pathlen);
}
/*
@ -52,7 +57,7 @@ static void process_blob(struct rev_info *revs,
static void process_gitlink(struct rev_info *revs,
const unsigned char *sha1,
show_object_fn show,
struct name_path *path,
struct strbuf *path,
const char *name,
void *cb_data)
{
@ -62,7 +67,6 @@ static void process_gitlink(struct rev_info *revs,
static void process_tree(struct rev_info *revs,
struct tree *tree,
show_object_fn show,
struct name_path *path,
struct strbuf *base,
const char *name,
void *cb_data)
@ -70,7 +74,6 @@ static void process_tree(struct rev_info *revs,
struct object *obj = &tree->object;
struct tree_desc desc;
struct name_entry entry;
struct name_path me;
enum interesting match = revs->diffopt.pathspec.nr == 0 ?
all_entries_interesting: entry_not_interesting;
int baselen = base->len;
@ -86,17 +89,12 @@ static void process_tree(struct rev_info *revs,
return;
die("bad tree object %s", oid_to_hex(&obj->oid));
}
obj->flags |= SEEN;
show(obj, path, name, cb_data);
me.up = path;
me.elem = name;
me.elem_len = strlen(name);
if (!match) {
strbuf_addstr(base, name);
if (base->len)
strbuf_addch(base, '/');
}
obj->flags |= SEEN;
strbuf_addstr(base, name);
show(obj, base->buf, cb_data);
if (base->len)
strbuf_addch(base, '/');
init_tree_desc(&desc, tree->buffer, tree->size);
@ -113,16 +111,16 @@ static void process_tree(struct rev_info *revs,
if (S_ISDIR(entry.mode))
process_tree(revs,
lookup_tree(entry.sha1),
show, &me, base, entry.path,
show, base, entry.path,
cb_data);
else if (S_ISGITLINK(entry.mode))
process_gitlink(revs, entry.sha1,
show, &me, entry.path,
show, base, entry.path,
cb_data);
else
process_blob(revs,
lookup_blob(entry.sha1),
show, &me, entry.path,
show, base, entry.path,
cb_data);
}
strbuf_setlen(base, baselen);
@ -213,19 +211,19 @@ void traverse_commit_list(struct rev_info *revs,
continue;
if (obj->type == OBJ_TAG) {
obj->flags |= SEEN;
show_object(obj, NULL, name, data);
show_object(obj, name, data);
continue;
}
if (!path)
path = "";
if (obj->type == OBJ_TREE) {
process_tree(revs, (struct tree *)obj, show_object,
NULL, &base, path, data);
&base, path, data);
continue;
}
if (obj->type == OBJ_BLOB) {
process_blob(revs, (struct blob *)obj, show_object,
NULL, path, data);
&base, path, data);
continue;
}
die("unknown pending object %s (%s)",

2
list-objects.h
View File

@ -2,7 +2,7 @@
#define LIST_OBJECTS_H
typedef void (*show_commit_fn)(struct commit *, void *);
typedef void (*show_object_fn)(struct object *, const struct name_path *, const char *, void *);
typedef void (*show_object_fn)(struct object *, const char *, void *);
void traverse_commit_list(struct rev_info *, show_commit_fn, show_object_fn, void *);
typedef void (*show_edge_fn)(struct commit *);

3
pack-bitmap-write.c
View File

@ -148,8 +148,7 @@ static uint32_t find_object_pos(const unsigned char *sha1)
return entry->in_pack_pos;
}
static void show_object(struct object *object, const struct name_path *path,
const char *last, void *data)
static void show_object(struct object *object, const char *name, void *data)
{
struct bitmap *base = data;
bitmap_set(base, find_object_pos(object->oid.hash));

13
pack-bitmap.c
View File

@ -417,19 +417,15 @@ static int ext_index_add_object(struct object *object, const char *name)
return bitmap_pos + bitmap_git.pack->num_objects;
}
static void show_object(struct object *object, const struct name_path *path,
const char *last, void *data)
static void show_object(struct object *object, const char *name, void *data)
{
struct bitmap *base = data;
int bitmap_pos;
bitmap_pos = bitmap_position(object->oid.hash);
if (bitmap_pos < 0) {
char *name = path_name(path, last);
if (bitmap_pos < 0)
bitmap_pos = ext_index_add_object(object, name);
free(name);
}
bitmap_set(base, bitmap_pos);
}
@ -897,9 +893,8 @@ struct bitmap_test_data {
size_t seen;
};
static void test_show_object(struct object *object,
const struct name_path *path,
const char *last, void *data)
static void test_show_object(struct object *object, const char *name,
void *data)
{
struct bitmap_test_data *tdata = data;
int bitmap_pos;

5
reachable.c
View File

@ -43,15 +43,14 @@ static int add_one_ref(const char *path, const struct object_id *oid,
* The traversal will have already marked us as SEEN, so we
* only need to handle any progress reporting here.
*/
static void mark_object(struct object *obj, const struct name_path *path,
const char *name, void *data)
static void mark_object(struct object *obj, const char *name, void *data)
{
update_progress(data);
}
static void mark_commit(struct commit *c, void *data)
{
mark_object(&c->object, NULL, NULL, data);
mark_object(&c->object, NULL, data);
}
struct recent_data {

64
revision.c
View File

@ -25,69 +25,13 @@ volatile show_early_output_fn_t show_early_output;
static const char *term_bad;
static const char *term_good;
char *path_name(const struct name_path *path, const char *name)
void show_object_with_name(FILE *out, struct object *obj, const char *name)
{
const struct name_path *p;
char *n, *m;
int nlen = strlen(name);
int len = nlen + 1;
for (p = path; p; p = p->up) {
if (p->elem_len)
len += p->elem_len + 1;
}
n = xmalloc(len);
m = n + len - (nlen + 1);
memcpy(m, name, nlen + 1);
for (p = path; p; p = p->up) {
if (p->elem_len) {
m -= p->elem_len + 1;
memcpy(m, p->elem, p->elem_len);
m[p->elem_len] = '/';
}
}
return n;
}
static int show_path_component_truncated(FILE *out, const char *name, int len)
{
int cnt;
for (cnt = 0; cnt < len; cnt++) {
int ch = name[cnt];
if (!ch || ch == '\n')
return -1;
fputc(ch, out);
}
return len;
}
static int show_path_truncated(FILE *out, const struct name_path *path)
{
int emitted, ours;
if (!path)
return 0;
emitted = show_path_truncated(out, path->up);
if (emitted < 0)
return emitted;
if (emitted)
fputc('/', out);
ours = show_path_component_truncated(out, path->elem, path->elem_len);
if (ours < 0)
return ours;
return ours || emitted;
}
void show_object_with_name(FILE *out, struct object *obj,
const struct name_path *path, const char *component)
{
struct name_path leaf;
leaf.up = (struct name_path *)path;
leaf.elem = component;
leaf.elem_len = strlen(component);
const char *p;
fprintf(out, "%s ", oid_to_hex(&obj->oid));
show_path_truncated(out, &leaf);
for (p = name; *p && *p != '\n'; p++)
fputc(*p, out);
fputc('\n', out);
}

11
revision.h
View File

@ -257,16 +257,9 @@ extern void put_revision_mark(const struct rev_info *revs,
extern void mark_parents_uninteresting(struct commit *commit);
extern void mark_tree_uninteresting(struct tree *tree);
struct name_path {
struct name_path *up;
int elem_len;
const char *elem;
};
char *path_name(struct strbuf *path, const char *name);
char *path_name(const struct name_path *path, const char *name);
extern void show_object_with_name(FILE *, struct object *,
const struct name_path *, const char *);
extern void show_object_with_name(FILE *, struct object *, const char *);
extern void add_pending_object(struct rev_info *revs,
struct object *obj, const char *name);