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6b8d9117cc
The timeout entries are sizeof(int) rather than sizeof(long), which means that when they were getting read we'd also leak kernel memory to userspace along with the timeout values. Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/*
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* sysctl_net_llc.c: sysctl interface to LLC net subsystem.
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*
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* Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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*/
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#include <linux/mm.h>
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#include <linux/init.h>
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#include <linux/sysctl.h>
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#include <net/net_namespace.h>
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#include <net/llc.h>
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#ifndef CONFIG_SYSCTL
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#error This file should not be compiled without CONFIG_SYSCTL defined
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#endif
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static struct ctl_table llc2_timeout_table[] = {
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{
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.procname = "ack",
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.data = &sysctl_llc2_ack_timeout,
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.maxlen = sizeof(sysctl_llc2_ack_timeout),
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.mode = 0644,
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.proc_handler = proc_dointvec_jiffies,
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},
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{
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.procname = "busy",
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.data = &sysctl_llc2_busy_timeout,
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.maxlen = sizeof(sysctl_llc2_busy_timeout),
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.mode = 0644,
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.proc_handler = proc_dointvec_jiffies,
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},
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{
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.procname = "p",
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.data = &sysctl_llc2_p_timeout,
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.maxlen = sizeof(sysctl_llc2_p_timeout),
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.mode = 0644,
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.proc_handler = proc_dointvec_jiffies,
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},
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{
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.procname = "rej",
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.data = &sysctl_llc2_rej_timeout,
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.maxlen = sizeof(sysctl_llc2_rej_timeout),
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.mode = 0644,
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.proc_handler = proc_dointvec_jiffies,
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},
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{ },
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};
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static struct ctl_table llc_station_table[] = {
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{ },
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};
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static struct ctl_table_header *llc2_timeout_header;
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static struct ctl_table_header *llc_station_header;
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int __init llc_sysctl_init(void)
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{
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llc2_timeout_header = register_net_sysctl(&init_net, "net/llc/llc2/timeout", llc2_timeout_table);
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llc_station_header = register_net_sysctl(&init_net, "net/llc/station", llc_station_table);
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if (!llc2_timeout_header || !llc_station_header) {
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llc_sysctl_exit();
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return -ENOMEM;
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}
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return 0;
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}
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void llc_sysctl_exit(void)
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{
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if (llc2_timeout_header) {
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unregister_net_sysctl_table(llc2_timeout_header);
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llc2_timeout_header = NULL;
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}
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if (llc_station_header) {
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unregister_net_sysctl_table(llc_station_header);
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llc_station_header = NULL;
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}
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}
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