4 * Author: Eric Biederman <ebiederm@xmision.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, version 2 of the
12 #include <linux/module.h>
13 #include <linux/uts.h>
14 #include <linux/utsname.h>
15 #include <linux/sysctl.h>
17 static void *get_uts(ctl_table *table, int write)
19 char *which = table->data;
20 struct uts_namespace *uts_ns;
22 uts_ns = current->nsproxy->uts_ns;
23 which = (which - (char *)&init_uts_ns) + (char *)uts_ns;
32 static void put_uts(ctl_table *table, int write, void *which)
40 #ifdef CONFIG_PROC_SYSCTL
42 * Special case of dostring for the UTS structure. This has locks
43 * to observe. Should this be in kernel/sys.c ????
45 static int proc_do_uts_string(ctl_table *table, int write,
46 void __user *buffer, size_t *lenp, loff_t *ppos)
48 struct ctl_table uts_table;
50 memcpy(&uts_table, table, sizeof(uts_table));
51 uts_table.data = get_uts(table, write);
52 r = proc_dostring(&uts_table,write,buffer,lenp, ppos);
53 put_uts(table, write, uts_table.data);
57 #define proc_do_uts_string NULL
60 static struct ctl_table uts_kern_table[] = {
63 .data = init_uts_ns.name.sysname,
64 .maxlen = sizeof(init_uts_ns.name.sysname),
66 .proc_handler = proc_do_uts_string,
69 .procname = "osrelease",
70 .data = init_uts_ns.name.release,
71 .maxlen = sizeof(init_uts_ns.name.release),
73 .proc_handler = proc_do_uts_string,
76 .procname = "version",
77 .data = init_uts_ns.name.version,
78 .maxlen = sizeof(init_uts_ns.name.version),
80 .proc_handler = proc_do_uts_string,
83 .procname = "hostname",
84 .data = init_uts_ns.name.nodename,
85 .maxlen = sizeof(init_uts_ns.name.nodename),
87 .proc_handler = proc_do_uts_string,
90 .procname = "domainname",
91 .data = init_uts_ns.name.domainname,
92 .maxlen = sizeof(init_uts_ns.name.domainname),
94 .proc_handler = proc_do_uts_string,
99 static struct ctl_table uts_root_table[] = {
101 .procname = "kernel",
103 .child = uts_kern_table,
108 static int __init utsname_sysctl_init(void)
110 register_sysctl_table(uts_root_table);
114 __initcall(utsname_sysctl_init);