Release 4.7 net/sysctl_net.c
/* -*- linux-c -*-
* sysctl_net.c: sysctl interface to net subsystem.
*
* Begun April 1, 1996, Mike Shaver.
* Added /proc/sys/net directories for each protocol family. [MS]
*
* Revision 1.2 1996/05/08 20:24:40 shaver
* Added bits for NET_BRIDGE and the NET_IPV4_ARP stuff and
* NET_IPV4_IP_FORWARD.
*
*
*/
#include <linux/mm.h>
#include <linux/export.h>
#include <linux/sysctl.h>
#include <linux/nsproxy.h>
#include <net/sock.h>
#ifdef CONFIG_INET
#include <net/ip.h>
#endif
#ifdef CONFIG_NET
#include <linux/if_ether.h>
#endif
static struct ctl_table_set *
net_ctl_header_lookup(struct ctl_table_root *root, struct nsproxy *namespaces)
{
return &namespaces->net_ns->sysctls;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 22 | 84.62% | 1 | 50.00% |
| al viro | al viro | 4 | 15.38% | 1 | 50.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
static int is_seen(struct ctl_table_set *set)
{
return ¤t->nsproxy->net_ns->sysctls == set;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| al viro | al viro | 21 | 91.30% | 1 | 50.00% |
| eric w. biederman | eric w. biederman | 2 | 8.70% | 1 | 50.00% |
| Total | 23 | 100.00% | 2 | 100.00% |
/* Return standard mode bits for table entry. */
static int net_ctl_permissions(struct ctl_table_header *head,
struct ctl_table *table)
{
struct net *net = container_of(head->set, struct net, sysctls);
kuid_t root_uid = make_kuid(net->user_ns, 0);
kgid_t root_gid = make_kgid(net->user_ns, 0);
/* Allow network administrator to have same access as root. */
if (ns_capable(net->user_ns, CAP_NET_ADMIN) ||
uid_eq(root_uid, current_euid())) {
int mode = (table->mode >> 6) & 7;
return (mode << 6) | (mode << 3) | mode;
}
/* Allow netns root group to have the same access as the root group */
if (in_egroup_p(root_gid)) {
int mode = (table->mode >> 3) & 7;
return (mode << 3) | mode;
}
return table->mode;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 87 | 60.42% | 3 | 60.00% |
| stephen hemminger | stephen hemminger | 56 | 38.89% | 1 | 20.00% |
| zhao hongjiang | zhao hongjiang | 1 | 0.69% | 1 | 20.00% |
| Total | 144 | 100.00% | 5 | 100.00% |
static struct ctl_table_root net_sysctl_root = {
.lookup = net_ctl_header_lookup,
.permissions = net_ctl_permissions,
};
static int __net_init sysctl_net_init(struct net *net)
{
setup_sysctl_set(&net->sysctls, &net_sysctl_root, is_seen);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 23 | 82.14% | 2 | 50.00% |
| al viro | al viro | 4 | 14.29% | 1 | 25.00% |
| alexey dobriyan | alexey dobriyan | 1 | 3.57% | 1 | 25.00% |
| Total | 28 | 100.00% | 4 | 100.00% |
static void __net_exit sysctl_net_exit(struct net *net)
{
retire_sysctl_set(&net->sysctls);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 18 | 90.00% | 2 | 50.00% |
| al viro | al viro | 1 | 5.00% | 1 | 25.00% |
| alexey dobriyan | alexey dobriyan | 1 | 5.00% | 1 | 25.00% |
| Total | 20 | 100.00% | 4 | 100.00% |
static struct pernet_operations sysctl_pernet_ops = {
.init = sysctl_net_init,
.exit = sysctl_net_exit,
};
static struct ctl_table_header *net_header;
__init int net_sysctl_init(void)
{
static struct ctl_table empty[1];
int ret = -ENOMEM;
/* Avoid limitations in the sysctl implementation by
* registering "/proc/sys/net" as an empty directory not in a
* network namespace.
*/
net_header = register_sysctl("net", empty);
if (!net_header)
goto out;
ret = register_pernet_subsys(&sysctl_pernet_ops);
if (ret)
goto out1;
register_sysctl_root(&net_sysctl_root);
out:
return ret;
out1:
unregister_sysctl_table(net_header);
net_header = NULL;
goto out;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 65 | 81.25% | 4 | 80.00% |
| li rongqing | li rongqing | 15 | 18.75% | 1 | 20.00% |
| Total | 80 | 100.00% | 5 | 100.00% |
struct ctl_table_header *register_net_sysctl(struct net *net,
const char *path, struct ctl_table *table)
{
return __register_sysctl_table(&net->sysctls, path, table);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 35 | 100.00% | 1 | 100.00% |
| Total | 35 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(register_net_sysctl);
void unregister_net_sysctl_table(struct ctl_table_header *header)
{
unregister_sysctl_table(header);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 14 | 93.33% | 1 | 50.00% |
| harvey harrison | harvey harrison | 1 | 6.67% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(unregister_net_sysctl_table);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 314 | 69.16% | 10 | 43.48% |
| stephen hemminger | stephen hemminger | 62 | 13.66% | 1 | 4.35% |
| al viro | al viro | 30 | 6.61% | 1 | 4.35% |
| pre-git | pre-git | 16 | 3.52% | 3 | 13.04% |
| li rongqing | li rongqing | 15 | 3.30% | 1 | 4.35% |
| arnaldo carvalho de melo | arnaldo carvalho de melo | 6 | 1.32% | 1 | 4.35% |
| russell king | russell king | 3 | 0.66% | 1 | 4.35% |
| paul gortmaker | paul gortmaker | 3 | 0.66% | 1 | 4.35% |
| alexey dobriyan | alexey dobriyan | 2 | 0.44% | 1 | 4.35% |
| adrian bunk | adrian bunk | 1 | 0.22% | 1 | 4.35% |
| zhao hongjiang | zhao hongjiang | 1 | 0.22% | 1 | 4.35% |
| harvey harrison | harvey harrison | 1 | 0.22% | 1 | 4.35% |
| Total | 454 | 100.00% | 23 | 100.00% |
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