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author | Patrick McHardy <kaber@trash.net> | 2010-10-04 23:24:21 +0200 |
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committer | Patrick McHardy <kaber@trash.net> | 2010-10-04 23:24:21 +0200 |
commit | eecc545856c8a0f27783a440d25f4ceaa1f95ce8 (patch) | |
tree | 7dcfcb0c91c098c6233fb360e0d23cccdef20dc9 /include/net/netfilter | |
parent | f68c53015c5b9aa98ffd87a34009f89bdbbd7160 (diff) | |
download | kernel_samsung_crespo-eecc545856c8a0f27783a440d25f4ceaa1f95ce8.zip kernel_samsung_crespo-eecc545856c8a0f27783a440d25f4ceaa1f95ce8.tar.gz kernel_samsung_crespo-eecc545856c8a0f27783a440d25f4ceaa1f95ce8.tar.bz2 |
netfilter: add missing xt_log.h file
Forgot to add xt_log.h in commit a8defca0 (netfilter: ipt_LOG:
add bufferisation to call printk() once)
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include/net/netfilter')
-rw-r--r-- | include/net/netfilter/xt_log.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/net/netfilter/xt_log.h b/include/net/netfilter/xt_log.h new file mode 100644 index 0000000..0dfb34a --- /dev/null +++ b/include/net/netfilter/xt_log.h @@ -0,0 +1,54 @@ +#define S_SIZE (1024 - (sizeof(unsigned int) + 1)) + +struct sbuff { + unsigned int count; + char buf[S_SIZE + 1]; +}; +static struct sbuff emergency, *emergency_ptr = &emergency; + +static int sb_add(struct sbuff *m, const char *f, ...) +{ + va_list args; + int len; + + if (likely(m->count < S_SIZE)) { + va_start(args, f); + len = vsnprintf(m->buf + m->count, S_SIZE - m->count, f, args); + va_end(args); + if (likely(m->count + len < S_SIZE)) { + m->count += len; + return 0; + } + } + m->count = S_SIZE; + printk_once(KERN_ERR KBUILD_MODNAME " please increase S_SIZE\n"); + return -1; +} + +static struct sbuff *sb_open(void) +{ + struct sbuff *m = kmalloc(sizeof(*m), GFP_ATOMIC); + + if (unlikely(!m)) { + local_bh_disable(); + do { + m = xchg(&emergency_ptr, NULL); + } while (!m); + } + m->count = 0; + return m; +} + +static void sb_close(struct sbuff *m) +{ + m->buf[m->count] = 0; + printk("%s\n", m->buf); + + if (likely(m != &emergency)) + kfree(m); + else { + xchg(&emergency_ptr, m); + local_bh_enable(); + } +} + |