cregit-Linux how code gets into the kernel

Release 4.11 net/bridge/netfilter/ebt_mark_m.c

/*
 *  ebt_mark_m
 *
 *      Authors:
 *      Bart De Schuymer <bdschuym@pandora.be>
 *
 *  July, 2002
 *
 */
#include <linux/module.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_bridge/ebtables.h>
#include <linux/netfilter_bridge/ebt_mark_m.h>


static bool ebt_mark_mt(const struct sk_buff *skb, struct xt_action_param *par) { const struct ebt_mark_m_info *info = par->matchinfo; if (info->bitmask & EBT_MARK_OR) return !!(skb->mark & info->mask) ^ info->invert; return ((skb->mark & info->mask) == info->mark) ^ info->invert; }

Contributors

PersonTokensPropCommitsCommitProp
Bart De Schuymer6386.30%114.29%
Jan Engelhardt810.96%571.43%
Thomas Graf22.74%114.29%
Total73100.00%7100.00%


static int ebt_mark_mt_check(const struct xt_mtchk_param *par) { const struct ebt_mark_m_info *info = par->matchinfo; if (info->bitmask & ~EBT_MARK_MASK) return -EINVAL; if ((info->bitmask & EBT_MARK_OR) && (info->bitmask & EBT_MARK_AND)) return -EINVAL; if (!info->bitmask) return -EINVAL; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Bart De Schuymer5678.87%116.67%
Jan Engelhardt1521.13%583.33%
Total71100.00%6100.00%

#ifdef CONFIG_COMPAT struct compat_ebt_mark_m_info { compat_ulong_t mark, mask; uint8_t invert, bitmask; };
static void mark_mt_compat_from_user(void *dst, const void *src) { const struct compat_ebt_mark_m_info *user = src; struct ebt_mark_m_info *kern = dst; kern->mark = user->mark; kern->mask = user->mask; kern->invert = user->invert; kern->bitmask = user->bitmask; }

Contributors

PersonTokensPropCommitsCommitProp
Florian Westphal62100.00%1100.00%
Total62100.00%1100.00%


static int mark_mt_compat_to_user(void __user *dst, const void *src) { struct compat_ebt_mark_m_info __user *user = dst; const struct ebt_mark_m_info *kern = src; if (put_user(kern->mark, &user->mark) || put_user(kern->mask, &user->mask) || put_user(kern->invert, &user->invert) || put_user(kern->bitmask, &user->bitmask)) return -EFAULT; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Florian Westphal89100.00%1100.00%
Total89100.00%1100.00%

#endif static struct xt_match ebt_mark_mt_reg __read_mostly = { .name = "mark_m", .revision = 0, .family = NFPROTO_BRIDGE, .match = ebt_mark_mt, .checkentry = ebt_mark_mt_check, .matchsize = sizeof(struct ebt_mark_m_info), #ifdef CONFIG_COMPAT .compatsize = sizeof(struct compat_ebt_mark_m_info), .compat_from_user = mark_mt_compat_from_user, .compat_to_user = mark_mt_compat_to_user, #endif .me = THIS_MODULE, };
static int __init ebt_mark_m_init(void) { return xt_register_match(&ebt_mark_mt_reg); }

Contributors

PersonTokensPropCommitsCommitProp
Bart De Schuymer1381.25%133.33%
Jan Engelhardt212.50%133.33%
Andrew Morton16.25%133.33%
Total16100.00%3100.00%


static void __exit ebt_mark_m_fini(void) { xt_unregister_match(&ebt_mark_mt_reg); }

Contributors

PersonTokensPropCommitsCommitProp
Bart De Schuymer1280.00%133.33%
Jan Engelhardt213.33%133.33%
Andrew Morton16.67%133.33%
Total15100.00%3100.00%

module_init(ebt_mark_m_init); module_exit(ebt_mark_m_fini); MODULE_DESCRIPTION("Ebtables: Packet mark match"); MODULE_LICENSE("GPL");

Overall Contributors

PersonTokensPropCommitsCommitProp
Florian Westphal19543.33%15.56%
Bart De Schuymer18541.11%211.11%
Jan Engelhardt6414.22%1372.22%
Andrew Morton40.89%15.56%
Thomas Graf20.44%15.56%
Total450100.00%18100.00%
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