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PCI/P2PDMA: 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.

Link: https://lore.kernel.org/r/20241202-sysfs-const-bin_attr-pci-v1-3-c32360f495a7@weissschuh.net
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
This commit is contained in:
Thomas Weißschuh 2024-12-02 20:02:59 +01:00 committed by Bjorn Helgaas
parent 3c39919a5f
commit 35fdb302ca
1 changed files with 3 additions and 3 deletions
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6
drivers/pci/p2pdma.c
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@ -161,7 +161,7 @@ static int p2pmem_alloc_mmap(struct file *filp, struct kobject *kobj,
return ret;
}
static struct bin_attribute p2pmem_alloc_attr = {
static const struct bin_attribute p2pmem_alloc_attr = {
.attr = { .name = "allocate", .mode = 0660 },
.mmap = p2pmem_alloc_mmap,
/*
@ -180,14 +180,14 @@ static struct attribute *p2pmem_attrs[] = {
NULL,
};
static struct bin_attribute *p2pmem_bin_attrs[] = {
static const struct bin_attribute *const p2pmem_bin_attrs[] = {
&p2pmem_alloc_attr,
NULL,
};
static const struct attribute_group p2pmem_group = {
.attrs = p2pmem_attrs,
.bin_attrs = p2pmem_bin_attrs,
.bin_attrs_new = p2pmem_bin_attrs,
.name = "p2pmem",
};