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w1: Constify 'struct bin_attribute'

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The sysfs core now allows instances of 'struct bin_attribute' to be
moved into read-only memory. Make use of that to protect them against
accidental or malicious modifications.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20241211-sysfs-const-bin_attr-w1-v1-1-c4befd2aa7cc@weissschuh.net
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
This commit is contained in:
Thomas Weißschuh
2024-12-11 18:50:16 +01:00
committed by Krzysztof Kozlowski
parent 5f69c091a6
commit 699e5f2f28
1 changed files with 6 additions and 6 deletions
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12
drivers/w1/w1.c
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@@ -111,7 +111,7 @@ ATTRIBUTE_GROUPS(w1_slave);
/* Default family */
static ssize_t rw_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr, char *buf, loff_t off,
const struct bin_attribute *bin_attr, char *buf, loff_t off,
size_t count)
{
struct w1_slave *sl = kobj_to_w1_slave(kobj);
@@ -130,8 +130,8 @@ out_up:
}
static ssize_t rw_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *bin_attr, char *buf, loff_t off,
size_t count)
const struct bin_attribute *bin_attr, char *buf,
loff_t off, size_t count)
{
struct w1_slave *sl = kobj_to_w1_slave(kobj);
@@ -141,15 +141,15 @@ static ssize_t rw_read(struct file *filp, struct kobject *kobj,
return count;
}
static BIN_ATTR_RW(rw, PAGE_SIZE);
static const BIN_ATTR_RW(rw, PAGE_SIZE);
static struct bin_attribute *w1_slave_bin_attrs[] = {
static const struct bin_attribute *const w1_slave_bin_attrs[] = {
&bin_attr_rw,
NULL,
};
static const struct attribute_group w1_slave_default_group = {
.bin_attrs = w1_slave_bin_attrs,
.bin_attrs_new = w1_slave_bin_attrs,
};
static const struct attribute_group *w1_slave_default_groups[] = {