fs/proc/version.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/fs.h>
   3 #include <linux/init.h>
   4 #include <linux/kernel.h>
   5 #include <linux/proc_fs.h>
   6 #include <linux/seq_file.h>
   7 #include <linux/utsname.h>
   8
   9 static int version_proc_show(struct seq_file *m, void *v)
  10 {
  11         seq_printf(m, linux_proc_banner,
  12                 utsname()->sysname,
  13                 utsname()->release,
  14                 utsname()->version);
  15         return 0;
  16 }
  17
  18 static int version_proc_open(struct inode *inode, struct file *file)
  19 {
  20         return single_open(file, version_proc_show, NULL);
  21 }
  22
  23 static const struct file_operations version_proc_fops = {
  24         .open           = version_proc_open,
  25         .read           = seq_read,
  26         .llseek         = seq_lseek,
  27         .release        = single_release,
  28 };
  29
  30 static int __init proc_version_init(void)
  31 {
  32         proc_create("version", 0, NULL, &version_proc_fops);
  33         return 0;
  34 }
  35 fs_initcall(proc_version_init);