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kheaders: Simplify attribute through __BIN_ATTR_SIMPLE_RO()

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The utility macro from the sysfs core is sufficient to implement this
attribute. Make use of it.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20241221-sysfs-const-bin_attr-kheaders-v2-1-8205538aa012@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thomas Weißschuh 2024-12-21 15:09:34 +01:00 committed by Greg Kroah-Hartman
parent e62fedef0a
commit 5ab5a3778d
1 changed files with 3 additions and 16 deletions
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19
kernel/kheaders.c
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@ -29,25 +29,12 @@ asm (
extern char kernel_headers_data[]; extern char kernel_headers_data[];
extern char kernel_headers_data_end[]; extern char kernel_headers_data_end[];
static ssize_t static struct bin_attribute kheaders_attr __ro_after_init =
ikheaders_read(struct file *file, struct kobject *kobj, __BIN_ATTR_SIMPLE_RO(kheaders.tar.xz, 0444);
struct bin_attribute *bin_attr,
char *buf, loff_t off, size_t len)
{
memcpy(buf, &kernel_headers_data[off], len);
return len;
}
static struct bin_attribute kheaders_attr __ro_after_init = {
.attr = {
.name = "kheaders.tar.xz",
.mode = 0444,
},
.read = &ikheaders_read,
};
static int __init ikheaders_init(void) static int __init ikheaders_init(void)
{ {
kheaders_attr.private = kernel_headers_data;
kheaders_attr.size = (kernel_headers_data_end - kheaders_attr.size = (kernel_headers_data_end -
kernel_headers_data); kernel_headers_data);
return sysfs_create_bin_file(kernel_kobj, &kheaders_attr); return sysfs_create_bin_file(kernel_kobj, &kheaders_attr);