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powerpc/powernv/ultravisor: 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/20241216-sysfs-const-bin_attr-powerpc-v1-3-bbed8906f476@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thomas Weißschuh
2024-12-16 05:07:45 +01:00
committed by Greg Kroah-Hartman
parent 982d13db10
commit f629576662
1 changed files with 3 additions and 3 deletions
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6
arch/powerpc/platforms/powernv/ultravisor.c
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@@ -32,15 +32,15 @@ int __init early_init_dt_scan_ultravisor(unsigned long node, const char *uname,
static struct memcons *uv_memcons;
static ssize_t uv_msglog_read(struct file *file, struct kobject *kobj,
struct bin_attribute *bin_attr, char *to,
const struct bin_attribute *bin_attr, char *to,
loff_t pos, size_t count)
{
return memcons_copy(uv_memcons, to, pos, count);
}
static struct bin_attribute uv_msglog_attr = {
static struct bin_attribute uv_msglog_attr __ro_after_init = {
.attr = {.name = "msglog", .mode = 0400},
.read = uv_msglog_read
.read_new = uv_msglog_read
};
static int __init uv_init(void)