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Date: Sat, 21 Jun 2008 00:53:58 -0700
From: Joonwoo Park <joonwpark81@...il.com>
To: Patrick McHardy <kaber@...sh.net>
Cc: netdev <netdev@...r.kernel.org>,
netfilter-devel <netfilter-devel@...r.kernel.org>,
Thomas Graf <tgraf@...g.ch>,
Pablo Neira Ayuso <pablo@...filter.org>,
Joonwoo Park <joonwpark81@...il.com>
Subject: [PATCH 1/8] textsearch: fix textsearch for case insensitive searching
The function textsearch_prepare has new parameter to support case
insensitive searching.
Signed-off-by: Joonwoo Park <joonwpark81@...il.com>
---
include/linux/textsearch.h | 6 ++++--
lib/textsearch.c | 6 ++++--
net/netfilter/nf_conntrack_amanda.c | 2 +-
net/netfilter/xt_string.c | 2 +-
net/sched/em_text.c | 2 +-
5 files changed, 11 insertions(+), 7 deletions(-)
diff --git a/include/linux/textsearch.h b/include/linux/textsearch.h
index 6f371f2..b6897f3 100644
--- a/include/linux/textsearch.h
+++ b/include/linux/textsearch.h
@@ -39,7 +39,7 @@ struct ts_state
struct ts_ops
{
const char *name;
- struct ts_config * (*init)(const void *, unsigned int, gfp_t);
+ struct ts_config * (*init)(const void *, unsigned int, u8, gfp_t);
unsigned int (*find)(struct ts_config *,
struct ts_state *);
void (*destroy)(struct ts_config *);
@@ -52,12 +52,14 @@ struct ts_ops
/**
* struct ts_config - search configuration
* @ops: operations of chosen algorithm
+ * @icase: ignore case
* @get_next_block: callback to fetch the next block to search in
* @finish: callback to finalize a search
*/
struct ts_config
{
struct ts_ops *ops;
+ u8 icase;
/**
* get_next_block - fetch next block of data
@@ -147,7 +149,7 @@ static inline unsigned int textsearch_get_pattern_len(struct ts_config *conf)
extern int textsearch_register(struct ts_ops *);
extern int textsearch_unregister(struct ts_ops *);
extern struct ts_config *textsearch_prepare(const char *, const void *,
- unsigned int, gfp_t, int);
+ unsigned int, u8, gfp_t, int);
extern void textsearch_destroy(struct ts_config *conf);
extern unsigned int textsearch_find_continuous(struct ts_config *,
struct ts_state *,
diff --git a/lib/textsearch.c b/lib/textsearch.c
index be8bda3..0832f76 100644
--- a/lib/textsearch.c
+++ b/lib/textsearch.c
@@ -238,6 +238,7 @@ unsigned int textsearch_find_continuous(struct ts_config *conf,
* @algo: name of search algorithm
* @pattern: pattern data
* @len: length of pattern
+ * @icase: ignore case
* @gfp_mask: allocation mask
* @flags: search flags
*
@@ -254,7 +255,8 @@ unsigned int textsearch_find_continuous(struct ts_config *conf,
* function returns EINVAL.
*/
struct ts_config *textsearch_prepare(const char *algo, const void *pattern,
- unsigned int len, gfp_t gfp_mask, int flags)
+ unsigned int len, u8 icase,
+ gfp_t gfp_mask, int flags)
{
int err = -ENOENT;
struct ts_config *conf;
@@ -279,7 +281,7 @@ struct ts_config *textsearch_prepare(const char *algo, const void *pattern,
if (ops == NULL)
goto errout;
- conf = ops->init(pattern, len, gfp_mask);
+ conf = ops->init(pattern, len, icase, gfp_mask);
if (IS_ERR(conf)) {
err = PTR_ERR(conf);
goto errout;
diff --git a/net/netfilter/nf_conntrack_amanda.c b/net/netfilter/nf_conntrack_amanda.c
index 38aedee..3e77165 100644
--- a/net/netfilter/nf_conntrack_amanda.c
+++ b/net/netfilter/nf_conntrack_amanda.c
@@ -207,7 +207,7 @@ static int __init nf_conntrack_amanda_init(void)
for (i = 0; i < ARRAY_SIZE(search); i++) {
search[i].ts = textsearch_prepare(ts_algo, search[i].string,
- search[i].len,
+ search[i].len, 0,
GFP_KERNEL, TS_AUTOLOAD);
if (IS_ERR(search[i].ts)) {
ret = PTR_ERR(search[i].ts);
diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c
index 72f694d..9508484 100644
--- a/net/netfilter/xt_string.c
+++ b/net/netfilter/xt_string.c
@@ -55,7 +55,7 @@ string_mt_check(const char *tablename, const void *ip,
if (conf->patlen > XT_STRING_MAX_PATTERN_SIZE)
return false;
ts_conf = textsearch_prepare(conf->algo, conf->pattern, conf->patlen,
- GFP_KERNEL, TS_AUTOLOAD);
+ 0, GFP_KERNEL, TS_AUTOLOAD);
if (IS_ERR(ts_conf))
return false;
diff --git a/net/sched/em_text.c b/net/sched/em_text.c
index 853c5ea..40c8a23 100644
--- a/net/sched/em_text.c
+++ b/net/sched/em_text.c
@@ -65,7 +65,7 @@ static int em_text_change(struct tcf_proto *tp, void *data, int len,
retry:
ts_conf = textsearch_prepare(conf->algo, (u8 *) conf + sizeof(*conf),
- conf->pattern_len, GFP_KERNEL, flags);
+ conf->pattern_len, 0, GFP_KERNEL, flags);
if (flags & TS_AUTOLOAD)
rtnl_lock();
--
1.5.4.3
--
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