linux-kernel - [PATCH v9 05/22] tracing: Add get_syscall

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <f3099a8d589a244912f257cbada8b11941733195.1437066836.git.tom.zanussi@linux.intel.com>
Date:	Thu, 16 Jul 2015 12:22:38 -0500
From:	Tom Zanussi <tom.zanussi@...ux.intel.com>
To:	rostedt@...dmis.org
Cc:	daniel.wagner@...-carit.de, masami.hiramatsu.pt@...achi.com,
	namhyung@...nel.org, josh@...htriplett.org, andi@...stfloor.org,
	linux-kernel@...r.kernel.org,
	Tom Zanussi <tom.zanussi@...ux.intel.com>
Subject: [PATCH v9 05/22] tracing: Add get_syscall_name()

Add a utility function to grab the syscall name from the syscall
metadata, given a syscall id.

Signed-off-by: Tom Zanussi <tom.zanussi@...ux.intel.com>
---
 kernel/trace/trace.h          |  5 +++++
 kernel/trace/trace_syscalls.c | 11 +++++++++++
 2 files changed, 16 insertions(+)

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 8799348..6fe5b66 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -1331,8 +1331,13 @@ int perf_ftrace_event_register(struct trace_event_call *call,
 
 #ifdef CONFIG_FTRACE_SYSCALLS
 void init_ftrace_syscalls(void);
+const char *get_syscall_name(int syscall);
 #else
 static inline void init_ftrace_syscalls(void) { }
+static inline const char *get_syscall_name(int syscall)
+{
+	return NULL;
+}
 #endif
 
 #ifdef CONFIG_EVENT_TRACING
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 7d567a4..004c111 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -106,6 +106,17 @@ static struct syscall_metadata *syscall_nr_to_meta(int nr)
 	return syscalls_metadata[nr];
 }
 
+const char *get_syscall_name(int syscall)
+{
+	struct syscall_metadata *entry;
+
+	entry = syscall_nr_to_meta(syscall);
+	if (!entry)
+		return NULL;
+
+	return entry->name;
+}
+
 static enum print_line_t
 print_syscall_enter(struct trace_iterator *iter, int flags,
 		    struct trace_event *event)
-- 
1.9.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/