From: Samir Bellabes <sam@xxxxxxxxx>
this patch adds a /proc/snet/snet_stats entry to show statistics about
snet. this patch adds also the functions to manage the statistics.
Signed-off-by: Samir Bellabes <sam@xxxxxxxxx>
---
security/snet/snet_stats.c | 65 ++++++++++++++++++++++++++++++++++++++++++++
security/snet/snet_stats.h | 57 ++++++++++++++++++++++++++++++++++++++
2 files changed, 122 insertions(+), 0 deletions(-)
create mode 100644 security/snet/snet_stats.c
create mode 100644 security/snet/snet_stats.h
diff --git a/security/snet/snet_stats.c b/security/snet/snet_stats.c
new file mode 100644
index 0000000..b946dda
--- /dev/null
+++ b/security/snet/snet_stats.c
@@ -0,0 +1,65 @@
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <net/net_namespace.h>
+#include "snet_stats.h"
+#include "snet_utils.h"
+
+extern struct net init_net;
+
+#define SNET_STATS_PROC_DIR "snet"
+#define SNET_STATS_PROC_INFO "snet_stats"
+
+static struct proc_dir_entry *snet_stats_dir;
+static struct proc_dir_entry *snet_stats_pde;
+struct snet_statistics snet_stats;
+
+static int snet_stats_show(struct seq_file *m, void *v)
+{
+ unsigned int sys = 0;
+ seq_printf(m, "snet statistics\n");
+
+ for (sys = SNET_SOCKET_CREATE; sys < SNET_NR_SOCKET_TYPES; sys++) {
+ unsigned int v = 0;
+ seq_printf(m, "%s {", snet_syscall_name(sys));
+
+ seq_printf(m, " Exec: %u ", SNET_STATS_GET(SNET_STATS_EXEC, sys));
+ seq_printf(m, " Unreg: %u ", SNET_STATS_GET(SNET_STATS_UNREG, sys));
+ for (v = SNET_VERDICT_GRANT; v < SNET_NR_VERDICT_TYPES; v++) {
+ seq_printf(m, " %s: %u ", snet_verdict_name(v),
+ SNET_STATS_GET(v, sys));
+ }
+ seq_printf(m, " Reg Error: %u ", SNET_STATS_GET(SNET_STATS_REG_ERROR, sys));
+ seq_printf(m, "}\n");
+ }
+ return 0;
+}
+
+static int snet_stats_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, snet_stats_show, NULL);
+}
+
+static const struct file_operations snet_stats_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = snet_stats_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+void snet_stats_init(void)
+{
+ snet_stats_dir = proc_mkdir(SNET_STATS_PROC_DIR, init_net.proc_net);
+ if (snet_stats_dir == NULL) {
+ printk(KERN_ERR "snet: can't create /proc/%s\n",
+ SNET_STATS_PROC_DIR);
+ goto out;
+ }
+
+ snet_stats_pde = proc_create(SNET_STATS_PROC_INFO, 0644, snet_stats_dir,
+ &snet_stats_proc_fops);
+out:
+ return;
+}
diff --git a/security/snet/snet_stats.h b/security/snet/snet_stats.h
new file mode 100644
index 0000000..05ab06d
--- /dev/null
+++ b/security/snet/snet_stats.h
@@ -0,0 +1,57 @@
+#ifndef _SNET_STATS_H
+#define _SNET_STATS_H
+
+#include <linux/snet.h>
+
+enum {
+ SNET_STATS_REG_GRANT = 0,
+ SNET_STATS_REG_DENY,
+ SNET_STATS_REG_PENDING,
+ SNET_STATS_REG_NONE,
+ SNET_STATS_REG_INVALID,
+ SNET_STATS_REG_ERROR,
+ SNET_STATS_UNREG,
+ SNET_STATS_EXEC,
+ __SNET_STATS_MAX
+};
+
+#define SNET_STATS_MAX __SNET_STATS_MAX
+
+struct snet_statistics {
+ atomic_t mibs[SNET_NR_SOCKET_TYPES+1][SNET_STATS_MAX];
+};
+
+extern struct snet_statistics snet_stats;
+#define SNET_STATS_INC(field, syscall) (atomic_inc(&snet_stats.mibs[syscall][field]))
+#define SNET_STATS_DEC(field, syscall) (atomic_dec(&snet_stats.mibs[syscall][field]))
+#define SNET_STATS_GET(field, syscall) (atomic_read(&snet_stats.mibs[syscall][field]))
+
+void snet_stats_init(void);
+
+static inline void snet_stats_inc_reg(const enum snet_verdict verdict,
+ const enum snet_syscall syscall)
+{
+ switch (verdict) {
+ case SNET_VERDICT_GRANT:
+ SNET_STATS_INC(SNET_STATS_REG_GRANT, syscall);
+ break;
+ case SNET_VERDICT_DENY:
+ SNET_STATS_INC(SNET_STATS_REG_DENY, syscall);
+ break;
+ case SNET_VERDICT_PENDING:
+ SNET_STATS_INC(SNET_STATS_REG_PENDING, syscall);
+ break;
+ case SNET_VERDICT_NONE:
+ SNET_STATS_INC(SNET_STATS_REG_NONE, syscall);
+ break;
+ case SNET_VERDICT_INVALID:
+ SNET_STATS_INC(SNET_STATS_REG_INVALID, syscall);
+ break;
+ default:
+ SNET_STATS_INC(SNET_STATS_REG_ERROR, syscall);
+ break;
+ }
+ return;
+};
+
+#endif
--
1.7.4.1
--
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