1#include <linux/fs.h>
 2#include <linux/init.h>
 3#include <linux/proc_fs.h>
 4#include <linux/seq_file.h>
 5
 6static int cmdline_proc_show(struct seq_file *m, void *v)
 7{
 8	seq_printf(m, "%s\n", saved_command_line);
 
 9	return 0;
10}
11
12static int cmdline_proc_open(struct inode *inode, struct file *file)
13{
14	return single_open(file, cmdline_proc_show, NULL);
15}
16
17static const struct file_operations cmdline_proc_fops = {
18	.open		= cmdline_proc_open,
19	.read		= seq_read,
20	.llseek		= seq_lseek,
21	.release	= single_release,
22};
23
24static int __init proc_cmdline_init(void)
25{
26	proc_create("cmdline", 0, NULL, &cmdline_proc_fops);
27	return 0;
28}
29module_init(proc_cmdline_init);

 1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/fs.h>
 3#include <linux/init.h>
 4#include <linux/proc_fs.h>
 5#include <linux/seq_file.h>
 6
 7static int cmdline_proc_show(struct seq_file *m, void *v)
 8{
 9	seq_puts(m, saved_command_line);
10	seq_putc(m, '\n');
11	return 0;
12}
13
14static int cmdline_proc_open(struct inode *inode, struct file *file)
15{
16	return single_open(file, cmdline_proc_show, NULL);
17}
18
19static const struct file_operations cmdline_proc_fops = {
20	.open		= cmdline_proc_open,
21	.read		= seq_read,
22	.llseek		= seq_lseek,
23	.release	= single_release,
24};
25
26static int __init proc_cmdline_init(void)
27{
28	proc_create("cmdline", 0, NULL, &cmdline_proc_fops);
29	return 0;
30}
31fs_initcall(proc_cmdline_init);