diff options
Diffstat (limited to 'net/ipv4/devinet.c')
| -rw-r--r-- | net/ipv4/devinet.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 5267b6b191eb..123a6d39438f 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -2367,8 +2367,7 @@ static int devinet_conf_ifindex(struct net *net, struct ipv4_devconf *cnf) } static int devinet_conf_proc(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int old_value = *(int *)ctl->data; int ret = proc_dointvec(ctl, write, buffer, lenp, ppos); @@ -2420,8 +2419,7 @@ static int devinet_conf_proc(struct ctl_table *ctl, int write, } static int devinet_sysctl_forward(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; @@ -2464,8 +2462,7 @@ static int devinet_sysctl_forward(struct ctl_table *ctl, int write, } static int ipv4_doint_and_flush(struct ctl_table *ctl, int write, - void __user *buffer, - size_t *lenp, loff_t *ppos) + void *buffer, size_t *lenp, loff_t *ppos) { int *valp = ctl->data; int val = *valp; @@ -2670,11 +2667,24 @@ static __net_init int devinet_init_net(struct net *net) tbl[0].extra2 = net; #endif - if ((!IS_ENABLED(CONFIG_SYSCTL) || - sysctl_devconf_inherit_init_net != 2) && - !net_eq(net, &init_net)) { - memcpy(all, init_net.ipv4.devconf_all, sizeof(ipv4_devconf)); - memcpy(dflt, init_net.ipv4.devconf_dflt, sizeof(ipv4_devconf_dflt)); + if (!net_eq(net, &init_net)) { + if (IS_ENABLED(CONFIG_SYSCTL) && + sysctl_devconf_inherit_init_net == 3) { + /* copy from the current netns */ + memcpy(all, current->nsproxy->net_ns->ipv4.devconf_all, + sizeof(ipv4_devconf)); + memcpy(dflt, + current->nsproxy->net_ns->ipv4.devconf_dflt, + sizeof(ipv4_devconf_dflt)); + } else if (!IS_ENABLED(CONFIG_SYSCTL) || + sysctl_devconf_inherit_init_net != 2) { + /* inherit == 0 or 1: copy from init_net */ + memcpy(all, init_net.ipv4.devconf_all, + sizeof(ipv4_devconf)); + memcpy(dflt, init_net.ipv4.devconf_dflt, + sizeof(ipv4_devconf_dflt)); + } + /* else inherit == 2: use compiled values */ } #ifdef CONFIG_SYSCTL |