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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license v2 0 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 23 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.115786599@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* memconsole.c
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*
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* Architecture-independent parts of the memory based BIOS console.
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*
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* Copyright 2017 Google Inc.
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*/
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#include <linux/init.h>
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#include <linux/sysfs.h>
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#include <linux/kobject.h>
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#include <linux/module.h>
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#include "memconsole.h"
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static ssize_t (*memconsole_read_func)(char *, loff_t, size_t);
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static ssize_t memconsole_read(struct file *filp, struct kobject *kobp,
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struct bin_attribute *bin_attr, char *buf,
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loff_t pos, size_t count)
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{
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if (WARN_ON_ONCE(!memconsole_read_func))
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return -EIO;
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return memconsole_read_func(buf, pos, count);
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}
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static struct bin_attribute memconsole_bin_attr = {
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.attr = {.name = "log", .mode = 0444},
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.read = memconsole_read,
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};
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void memconsole_setup(ssize_t (*read_func)(char *, loff_t, size_t))
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{
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memconsole_read_func = read_func;
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}
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EXPORT_SYMBOL(memconsole_setup);
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int memconsole_sysfs_init(void)
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{
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return sysfs_create_bin_file(firmware_kobj, &memconsole_bin_attr);
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}
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EXPORT_SYMBOL(memconsole_sysfs_init);
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void memconsole_exit(void)
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{
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sysfs_remove_bin_file(firmware_kobj, &memconsole_bin_attr);
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}
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EXPORT_SYMBOL(memconsole_exit);
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MODULE_AUTHOR("Google, Inc.");
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MODULE_LICENSE("GPL");
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