| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 17 Dec 2020 18:35:40 +0100
From: Arnaud Ferraris <arnaud.ferraris@...labora.com>
To: linux-ext4@...r.kernel.org
Cc: drosen@...gle.com, krisman@...labora.com, ebiggers@...nel.org,
tytso@....edu, Arnaud Ferraris <arnaud.ferraris@...labora.com>
Subject: [PATCH v3 08/12] dict: Support comparison with context
From: Gabriel Krisman Bertazi <krisman@...labora.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@...labora.com>
Signed-off-by: Arnaud Ferraris <arnaud.ferraris@...labora.com>
---
e2fsck/pass1b.c | 2 +-
e2fsck/pass2.c | 2 +-
lib/support/dict.c | 22 ++++++++++++++++------
lib/support/dict.h | 4 +++-
lib/support/mkquota.c | 2 +-
5 files changed, 22 insertions(+), 10 deletions(-)
diff --git a/e2fsck/pass1b.c b/e2fsck/pass1b.c
index 3352f9bd..2f8c14c8 100644
--- a/e2fsck/pass1b.c
+++ b/e2fsck/pass1b.c
@@ -104,7 +104,7 @@ static dict_t clstr_dict, ino_dict;
static ext2fs_inode_bitmap inode_dup_map;
-static int dict_int_cmp(const void *a, const void *b)
+static int dict_int_cmp(const void* cmp_ctx, const void *a, const void *b)
{
intptr_t ia, ib;
diff --git a/e2fsck/pass2.c b/e2fsck/pass2.c
index 0bcc6f0b..153e05f0 100644
--- a/e2fsck/pass2.c
+++ b/e2fsck/pass2.c
@@ -328,7 +328,7 @@ static short htree_depth(struct dx_dir_info *dx_dir,
return depth;
}
-static int dict_de_cmp(const void *a, const void *b)
+static int dict_de_cmp(const void *cmp_ctx, const void *a, const void *b)
{
const struct ext2_dir_entry *de_a, *de_b;
int a_len, b_len;
diff --git a/lib/support/dict.c b/lib/support/dict.c
index 6a5c15ce..f8277c4a 100644
--- a/lib/support/dict.c
+++ b/lib/support/dict.c
@@ -267,6 +267,7 @@ dict_t *dict_create(dictcount_t maxcount, dict_comp_t comp)
new->allocnode = dnode_alloc;
new->freenode = dnode_free;
new->context = NULL;
+ new->cmp_ctx = NULL;
new->nodecount = 0;
new->maxcount = maxcount;
new->nilnode.left = &new->nilnode;
@@ -294,6 +295,14 @@ void dict_set_allocator(dict_t *dict, dnode_alloc_t al,
dict->context = context;
}
+void dict_set_cmp_context(dict_t *dict, void *cmp_ctx)
+{
+ dict_assert (!dict->cmp_ctx);
+ dict_assert (dict_count(dict) == 0);
+
+ dict->cmp_ctx = cmp_ctx;
+}
+
#ifdef E2FSCK_NOTUSED
/*
* Free a dynamically allocated dictionary object. Removing the nodes
@@ -467,7 +476,7 @@ dnode_t *dict_lookup(dict_t *dict, const void *key)
/* simple binary search adapted for trees that contain duplicate keys */
while (root != nil) {
- result = dict->compare(key, root->key);
+ result = dict->compare(dict->cmp_ctx, key, root->key);
if (result < 0)
root = root->left;
else if (result > 0)
@@ -479,7 +488,8 @@ dnode_t *dict_lookup(dict_t *dict, const void *key)
do {
saved = root;
root = root->left;
- while (root != nil && dict->compare(key, root->key))
+ while (root != nil
+ && dict->compare(dict->cmp_ctx, key, root->key))
root = root->right;
} while (root != nil);
return saved;
@@ -503,7 +513,7 @@ dnode_t *dict_lower_bound(dict_t *dict, const void *key)
dnode_t *tentative = 0;
while (root != nil) {
- int result = dict->compare(key, root->key);
+ int result = dict->compare(dict->cmp_ctx, key, root->key);
if (result > 0) {
root = root->right;
@@ -535,7 +545,7 @@ dnode_t *dict_upper_bound(dict_t *dict, const void *key)
dnode_t *tentative = 0;
while (root != nil) {
- int result = dict->compare(key, root->key);
+ int result = dict->compare(dict->cmp_ctx, key, root->key);
if (result < 0) {
root = root->left;
@@ -580,7 +590,7 @@ void dict_insert(dict_t *dict, dnode_t *node, const void *key)
while (where != nil) {
parent = where;
- result = dict->compare(key, where->key);
+ result = dict->compare(dict->cmp_ctx, key, where->key);
/* trap attempts at duplicate key insertion unless it's explicitly allowed */
dict_assert (dict->dupes || result != 0);
if (result < 0)
@@ -1261,7 +1271,7 @@ static int tokenize(char *string, ...)
return tokcount;
}
-static int comparef(const void *key1, const void *key2)
+static int comparef(const void *cmp_ctx, const void *key1, const void *key2)
{
return strcmp(key1, key2);
}
diff --git a/lib/support/dict.h b/lib/support/dict.h
index 838079d6..d9462a33 100644
--- a/lib/support/dict.h
+++ b/lib/support/dict.h
@@ -56,7 +56,7 @@ typedef struct dnode_t {
#endif
} dnode_t;
-typedef int (*dict_comp_t)(const void *, const void *);
+typedef int (*dict_comp_t)(const void *, const void *, const void *);
typedef dnode_t *(*dnode_alloc_t)(void *);
typedef void (*dnode_free_t)(dnode_t *, void *);
@@ -69,6 +69,7 @@ typedef struct dict_t {
dnode_alloc_t dict_allocnode;
dnode_free_t dict_freenode;
void *dict_context;
+ void *cmp_ctx;
int dict_dupes;
#else
int dict_dummmy;
@@ -88,6 +89,7 @@ typedef struct dict_load_t {
extern dict_t *dict_create(dictcount_t, dict_comp_t);
extern void dict_set_allocator(dict_t *, dnode_alloc_t, dnode_free_t, void *);
+extern void dict_set_cmp_context(dict_t *, void *);
extern void dict_destroy(dict_t *);
extern void dict_free_nodes(dict_t *);
extern void dict_free(dict_t *);
diff --git a/lib/support/mkquota.c b/lib/support/mkquota.c
index 6f7ae6d6..fbc3833a 100644
--- a/lib/support/mkquota.c
+++ b/lib/support/mkquota.c
@@ -234,7 +234,7 @@ out:
/* Helper functions for computing quota in memory. */
/******************************************************************/
-static int dict_uint_cmp(const void *a, const void *b)
+static int dict_uint_cmp(const void *cmp_ctx, const void *a, const void *b)
{
unsigned int c, d;
--
2.29.2
Powered by blists - more mailing lists