diff options
Diffstat (limited to 'net/sctp/sysctl.c')
| -rw-r--r-- | net/sctp/sysctl.c | 101 |
1 files changed, 81 insertions, 20 deletions
diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c index 6b36561a1b3..35c8923b555 100644 --- a/net/sctp/sysctl.c +++ b/net/sctp/sysctl.c @@ -19,9 +19,8 @@ * See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License - * along with GNU CC; see the file COPYING. If not, write to - * the Free Software Foundation, 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. + * along with GNU CC; see the file COPYING. If not, see + * <http://www.gnu.org/licenses/>. * * Please send any bug reports or fixes you make to the * email address(es): @@ -56,11 +55,16 @@ extern long sysctl_sctp_mem[3]; extern int sysctl_sctp_rmem[3]; extern int sysctl_sctp_wmem[3]; -static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, - int write, +static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos); +static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, - loff_t *ppos); +static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos); + static struct ctl_table sctp_table[] = { { .procname = "sctp_mem", @@ -102,17 +106,17 @@ static struct ctl_table sctp_net_table[] = { .data = &init_net.sctp.rto_min, .maxlen = sizeof(unsigned int), .mode = 0644, - .proc_handler = proc_dointvec_minmax, + .proc_handler = proc_sctp_do_rto_min, .extra1 = &one, - .extra2 = &timer_max + .extra2 = &init_net.sctp.rto_max }, { .procname = "rto_max", .data = &init_net.sctp.rto_max, .maxlen = sizeof(unsigned int), .mode = 0644, - .proc_handler = proc_dointvec_minmax, - .extra1 = &one, + .proc_handler = proc_sctp_do_rto_max, + .extra1 = &init_net.sctp.rto_min, .extra2 = &timer_max }, { @@ -147,6 +151,7 @@ static struct ctl_table sctp_net_table[] = { }, { .procname = "cookie_hmac_alg", + .data = &init_net.sctp.sctp_hmac_alg, .maxlen = 8, .mode = 0644, .proc_handler = proc_sctp_do_hmac_alg, @@ -294,8 +299,7 @@ static struct ctl_table sctp_net_table[] = { { /* sentinel */ } }; -static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, - int write, +static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { @@ -342,17 +346,74 @@ static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, return ret; } +static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos) +{ + struct net *net = current->nsproxy->net_ns; + int new_value; + struct ctl_table tbl; + unsigned int min = *(unsigned int *) ctl->extra1; + unsigned int max = *(unsigned int *) ctl->extra2; + int ret; + + memset(&tbl, 0, sizeof(struct ctl_table)); + tbl.maxlen = sizeof(unsigned int); + + if (write) + tbl.data = &new_value; + else + tbl.data = &net->sctp.rto_min; + ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); + if (write) { + if (ret || new_value > max || new_value < min) + return -EINVAL; + net->sctp.rto_min = new_value; + } + return ret; +} + +static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write, + void __user *buffer, size_t *lenp, + loff_t *ppos) +{ + struct net *net = current->nsproxy->net_ns; + int new_value; + struct ctl_table tbl; + unsigned int min = *(unsigned int *) ctl->extra1; + unsigned int max = *(unsigned int *) ctl->extra2; + int ret; + + memset(&tbl, 0, sizeof(struct ctl_table)); + tbl.maxlen = sizeof(unsigned int); + + if (write) + tbl.data = &new_value; + else + tbl.data = &net->sctp.rto_max; + ret = proc_dointvec(&tbl, write, buffer, lenp, ppos); + if (write) { + if (ret || new_value > max || new_value < min) + return -EINVAL; + net->sctp.rto_max = new_value; + } + return ret; +} + int sctp_sysctl_net_register(struct net *net) { - struct ctl_table *table; - int i; + struct ctl_table *table = sctp_net_table; - table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL); - if (!table) - return -ENOMEM; + if (!net_eq(net, &init_net)) { + int i; - for (i = 0; table[i].data; i++) - table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp; + table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL); + if (!table) + return -ENOMEM; + + for (i = 0; table[i].data; i++) + table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp; + } net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table); return 0; @@ -367,7 +428,7 @@ void sctp_sysctl_net_unregister(struct net *net) kfree(table); } -static struct ctl_table_header * sctp_sysctl_header; +static struct ctl_table_header *sctp_sysctl_header; /* Sysctl registration. */ void sctp_sysctl_register(void) |