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| author | Thomas Weißschuh <linux@weissschuh.net> | 2024-12-11 18:50:16 +0100 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2024-12-14 11:05:56 +0100 |
| commit | 699e5f2f28c8f68ae3d3f58ba99f711b006c355b (patch) | |
| tree | 9a63c2ae6e694768582f2c8ae6a4fe8d47e4defb /drivers/w1 | |
| parent | w1: ds2482: Fix datasheet URL (diff) | |
| download | linux-699e5f2f28c8f68ae3d3f58ba99f711b006c355b.tar.gz linux-699e5f2f28c8f68ae3d3f58ba99f711b006c355b.zip | |
w1: Constify 'struct bin_attribute'
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>
Diffstat (limited to 'drivers/w1')
| -rw-r--r-- | drivers/w1/w1.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c index d82e86d3ddf6..29f200bbab41 100644 --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -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[] = { |