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SYSRQ: make IPv6 optional

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In case the kernel is built without IPv6 support the compilation of
this module fails as it assumes IPv6. This patch makes kernel support
conditional on kernel .config.
This commit is contained in:
Peter Volkov
2010-02-19 14:46:17 +03:00
committed by Jan Engelhardt
parent 01e4bace4d
commit c96845a311
1 changed files with 8 additions and 0 deletions
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8
extensions/xt_SYSRQ.c
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@@ -23,6 +23,10 @@
#include <net/ip.h> #include <net/ip.h>
#include "compat_xtables.h" #include "compat_xtables.h"
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
# define WITH_IPV6 1
#endif
static bool sysrq_once; static bool sysrq_once;
static char sysrq_password[64]; static char sysrq_password[64];
static char sysrq_hash[16] = "sha1"; static char sysrq_hash[16] = "sha1";
@@ -214,6 +218,7 @@ sysrq_tg4(struct sk_buff **pskb, const struct xt_target_param *par)
return sysrq_tg((void *)udph + sizeof(struct udphdr), len); return sysrq_tg((void *)udph + sizeof(struct udphdr), len);
} }
#ifdef WITH_IPV6
static unsigned int static unsigned int
sysrq_tg6(struct sk_buff **pskb, const struct xt_target_param *par) sysrq_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
{ {
@@ -242,6 +247,7 @@ sysrq_tg6(struct sk_buff **pskb, const struct xt_target_param *par)
ntohs(udph->dest), len); ntohs(udph->dest), len);
return sysrq_tg(udph + sizeof(struct udphdr), len); return sysrq_tg(udph + sizeof(struct udphdr), len);
} }
#endif
static bool sysrq_tg_check(const struct xt_tgchk_param *par) static bool sysrq_tg_check(const struct xt_tgchk_param *par)
{ {
@@ -278,6 +284,7 @@ static struct xt_target sysrq_tg_reg[] __read_mostly = {
.checkentry = sysrq_tg_check, .checkentry = sysrq_tg_check,
.me = THIS_MODULE, .me = THIS_MODULE,
}, },
#ifdef WITH_IPV6
{ {
.name = "SYSRQ", .name = "SYSRQ",
.revision = 1, .revision = 1,
@@ -286,6 +293,7 @@ static struct xt_target sysrq_tg_reg[] __read_mostly = {
.checkentry = sysrq_tg_check, .checkentry = sysrq_tg_check,
.me = THIS_MODULE, .me = THIS_MODULE,
}, },
#endif
}; };
static int __init sysrq_tg_init(void) static int __init sysrq_tg_init(void)