From fdb0178b2004931146ead209d17fba486116f69a Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Tue, 7 Apr 2015 20:03:43 +0000
Subject: ar71xx: routerboot: export extended wlan data via sysfs
Export the data to make it accessible from user-space.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45298 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
.../ar71xx/files/arch/mips/ath79/routerboot.c | 58 ++++++++++++++++++++++
1 file changed, 58 insertions(+)
(limited to 'target/linux/ar71xx/files')
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/routerboot.c b/target/linux/ar71xx/files/arch/mips/ath79/routerboot.c
index 5853b157f3..76776e1d84 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/routerboot.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/routerboot.c
@@ -11,6 +11,7 @@
#define pr_fmt(fmt) "rb: " fmt
#include <linux/kernel.h>
+#include <linux/kobject.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/routerboot.h>
@@ -298,3 +299,60 @@ rb_init_info(void *data, unsigned int size)
return &rb_info;
}
+
+static char *rb_ext_wlan_data;
+
+static ssize_t
+rb_ext_wlan_data_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr, char *buf,
+ loff_t off, size_t count)
+{
+ if (off + count > attr->size)
+ return -EFBIG;
+
+ memcpy(buf, &rb_ext_wlan_data[off], count);
+
+ return count;
+}
+
+static const struct bin_attribute rb_ext_wlan_data_attr = {
+ .attr = {
+ .name = "ext_wlan_data",
+ .mode = S_IRUSR | S_IWUSR,
+ },
+ .read = rb_ext_wlan_data_read,
+ .size = RB_ART_SIZE,
+};
+
+static int __init rb_sysfs_init(void)
+{
+ struct kobject *rb_kobj;
+ int ret;
+
+ rb_ext_wlan_data = rb_get_ext_wlan_data(1);
+ if (rb_ext_wlan_data == NULL)
+ return -ENOENT;
+
+ rb_kobj = kobject_create_and_add("routerboot", firmware_kobj);
+ if (rb_kobj == NULL) {
+ ret = -ENOMEM;
+ pr_err("unable to create sysfs entry\n");
+ goto err_free_wlan_data;
+ }
+
+ ret = sysfs_create_bin_file(rb_kobj, &rb_ext_wlan_data_attr);
+ if (ret) {
+ pr_err("unable to create sysfs file, %d\n", ret);
+ goto err_put_kobj;
+ }
+
+ return 0;
+
+err_put_kobj:
+ kobject_put(rb_kobj);
+err_free_wlan_data:
+ kfree(rb_ext_wlan_data);
+ return ret;
+}
+
+late_initcall(rb_sysfs_init);
--
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