| 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: Sat, 26 Dec 2009 01:44:10 +0100 (CET)
From: Stefan Richter <stefanr@...6.in-berlin.de>
To: linux-kernel@...r.kernel.org
cc: linux1394-devel@...ts.sourceforge.net,
Clemens Ladisch <cladisch@...tmail.net>
Subject: [PATCH 3/3] firewire: qualify config ROM cache pointers as const
pointers
Several config ROM related functions only peek at the ROM cache; mark
their arguments as const pointers. Ditto fw_device.config_rom and
fw_unit.directory, as the memory behind them is meant to be write-once.
Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
---
drivers/firewire/core-device.c | 21 +++++++++++----------
drivers/firewire/sbp2.c | 5 +++--
include/linux/firewire.h | 12 ++++++------
3 files changed, 20 insertions(+), 18 deletions(-)
Index: linux-2.6.33-rc2/drivers/firewire/core-device.c
===================================================================
--- linux-2.6.33-rc2.orig/drivers/firewire/core-device.c
+++ linux-2.6.33-rc2/drivers/firewire/core-device.c
@@ -43,7 +43,7 @@
#include "core.h"
-void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 * p)
+void fw_csr_iterator_init(struct fw_csr_iterator *ci, const u32 *p)
{
ci->p = p + 1;
ci->end = ci->p + (p[0] >> 16);
@@ -59,7 +59,7 @@ int fw_csr_iterator_next(struct fw_csr_i
}
EXPORT_SYMBOL(fw_csr_iterator_next);
-static u32 *search_leaf(u32 *directory, int search_key)
+static const u32 *search_leaf(const u32 *directory, int search_key)
{
struct fw_csr_iterator ci;
int last_key = 0, key, value;
@@ -76,7 +76,7 @@ static u32 *search_leaf(u32 *directory,
return NULL;
}
-static int textual_leaf_to_string(u32 *block, char *buf, size_t size)
+static int textual_leaf_to_string(const u32 *block, char *buf, size_t size)
{
unsigned int quadlets, i;
char c;
@@ -116,9 +116,9 @@ static int textual_leaf_to_string(u32 *b
* the immediate entry with @key. The string is zero-terminated.
* Returns strlen(buf) or a negative error code.
*/
-int fw_csr_string(u32 *directory, int key, char *buf, size_t size)
+int fw_csr_string(const u32 *directory, int key, char *buf, size_t size)
{
- u32 *leaf = search_leaf(directory, key);
+ const u32 *leaf = search_leaf(directory, key);
if (!leaf)
return -ENOENT;
@@ -128,7 +128,7 @@ EXPORT_SYMBOL(fw_csr_string);
static bool is_fw_unit(struct device *dev);
-static int match_unit_directory(u32 *directory, u32 match_flags,
+static int match_unit_directory(const u32 *directory, u32 match_flags,
const struct ieee1394_device_id *id)
{
struct fw_csr_iterator ci;
@@ -262,7 +262,7 @@ static ssize_t show_immediate(struct dev
struct config_rom_attribute *attr =
container_of(dattr, struct config_rom_attribute, attr);
struct fw_csr_iterator ci;
- u32 *dir;
+ const u32 *dir;
int key, value, ret = -ENOENT;
down_read(&fw_device_rwsem);
@@ -293,7 +293,7 @@ static ssize_t show_text_leaf(struct dev
{
struct config_rom_attribute *attr =
container_of(dattr, struct config_rom_attribute, attr);
- u32 *dir;
+ const u32 *dir;
size_t bufsize;
char dummy_buf[2];
int ret;
@@ -421,7 +421,7 @@ static ssize_t guid_show(struct device *
return ret;
}
-static int units_sprintf(char *buf, u32 *directory)
+static int units_sprintf(char *buf, const u32 *directory)
{
struct fw_csr_iterator ci;
int key, value;
@@ -503,7 +503,8 @@ static int read_rom(struct fw_device *de
*/
static int read_bus_info_block(struct fw_device *device, int generation)
{
- u32 *rom, *stack, *old_rom, *new_rom;
+ const u32 *old_rom, *new_rom;
+ u32 *rom, *stack;
u32 sp, key;
int i, end, length, ret = -1;
Index: linux-2.6.33-rc2/drivers/firewire/sbp2.c
===================================================================
--- linux-2.6.33-rc2.orig/drivers/firewire/sbp2.c
+++ linux-2.6.33-rc2/drivers/firewire/sbp2.c
@@ -1014,7 +1014,8 @@ static int sbp2_add_logical_unit(struct
return 0;
}
-static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt, u32 *directory)
+static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt,
+ const u32 *directory)
{
struct fw_csr_iterator ci;
int key, value;
@@ -1027,7 +1028,7 @@ static int sbp2_scan_logical_unit_dir(st
return 0;
}
-static int sbp2_scan_unit_dir(struct sbp2_target *tgt, u32 *directory,
+static int sbp2_scan_unit_dir(struct sbp2_target *tgt, const u32 *directory,
u32 *model, u32 *firmware_revision)
{
struct fw_csr_iterator ci;
Index: linux-2.6.33-rc2/include/linux/firewire.h
===================================================================
--- linux-2.6.33-rc2.orig/include/linux/firewire.h
+++ linux-2.6.33-rc2/include/linux/firewire.h
@@ -65,13 +65,13 @@
#define CSR_DIRECTORY_ID 0x20
struct fw_csr_iterator {
- u32 *p;
- u32 *end;
+ const u32 *p;
+ const u32 *end;
};
-void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 *p);
+void fw_csr_iterator_init(struct fw_csr_iterator *ci, const u32 *p);
int fw_csr_iterator_next(struct fw_csr_iterator *ci, int *key, int *value);
-int fw_csr_string(u32 *directory, int key, char *buf, size_t size);
+int fw_csr_string(const u32 *directory, int key, char *buf, size_t size);
extern struct bus_type fw_bus_type;
@@ -163,7 +163,7 @@ struct fw_device {
struct mutex client_list_mutex;
struct list_head client_list;
- u32 *config_rom;
+ const u32 *config_rom;
size_t config_rom_length;
int config_rom_retries;
unsigned is_local:1;
@@ -205,7 +205,7 @@ int fw_device_enable_phys_dma(struct fw_
*/
struct fw_unit {
struct device device;
- u32 *directory;
+ const u32 *directory;
struct fw_attribute_group attribute_group;
};
--
Stefan Richter
-=====-==--= ==-- ==-=-
http://arcgraph.de/sr/
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists