[PATCH v18 15/18] trace-cmd: Refactor few trace-cmd internal functions.

["Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>]

In order to reuse code inside trace-cmd application context,
few functions are made non static and "trace_" is prepended
to their names:
	int trace_make_vsock(unsigned int port);
	int trace_get_vsock_port(int sd, unsigned int *port);
	int trace_open_vsock(unsigned int cid, unsigned int port);
	char *trace_get_guest_file(const char *file, const char *guest);

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 tracecmd/include/trace-local.h |  8 ++++++++
 tracecmd/trace-agent.c         | 10 +++++-----
 tracecmd/trace-record.c        | 16 ++++++++--------
 3 files changed, 21 insertions(+), 13 deletions(-)

diff --git a/tracecmd/include/trace-local.h b/tracecmd/include/trace-local.h
index 4c8d6cb..d3e96c2 100644
--- a/tracecmd/include/trace-local.h
+++ b/tracecmd/include/trace-local.h
@@ -19,6 +19,8 @@
 #define GUEST_FIFO_FMT		GUEST_DIR_FMT "/" GUEST_PIPE_NAME "%d"
 #define VIRTIO_FIFO_FMT		"/dev/virtio-ports/" GUEST_PIPE_NAME "%d"
 
+#define TRACE_FILENAME		"trace.dat"
+
 /* fix stupid glib guint64 typecasts and printf formats */
 typedef unsigned long long u64;
 
@@ -260,6 +262,12 @@ void tracecmd_disable_tracing(void);
 void tracecmd_enable_tracing(void);
 void tracecmd_stat_cpu(struct trace_seq *s, int cpu);
 
+int trace_make_vsock(unsigned int port);
+int trace_get_vsock_port(int sd, unsigned int *port);
+int trace_open_vsock(unsigned int cid, unsigned int port);
+
+char *trace_get_guest_file(const char *file, const char *guest);
+
 /* No longer in event-utils.h */
 void __noreturn die(const char *fmt, ...); /* Can be overriden */
 void *malloc_or_die(unsigned int size); /* Can be overridden */
diff --git a/tracecmd/trace-agent.c b/tracecmd/trace-agent.c
index cc330b7..db58064 100644
--- a/tracecmd/trace-agent.c
+++ b/tracecmd/trace-agent.c
@@ -40,7 +40,7 @@ static int get_local_cid(unsigned int *cid)
 	return ret;
 }
 
-static int make_vsock(unsigned int port)
+int trace_make_vsock(unsigned int port)
 {
 	struct sockaddr_vm addr = {
 		.svm_family = AF_VSOCK,
@@ -64,7 +64,7 @@ static int make_vsock(unsigned int port)
 	return sd;
 }
 
-static int get_vsock_port(int sd, unsigned int *port)
+int trace_get_vsock_port(int sd, unsigned int *port)
 {
 	struct sockaddr_vm addr;
 	socklen_t addr_len = sizeof(addr);
@@ -87,11 +87,11 @@ static void make_vsocks(int nr, int *fds, unsigned int *ports)
 	int i, fd, ret;
 
 	for (i = 0; i < nr; i++) {
-		fd = make_vsock(VMADDR_PORT_ANY);
+		fd = trace_make_vsock(VMADDR_PORT_ANY);
 		if (fd < 0)
 			die("Failed to open vsocket");
 
-		ret = get_vsock_port(fd, &port);
+		ret = trace_get_vsock_port(fd, &port);
 		if (ret < 0)
 			die("Failed to get vsocket address");
 
@@ -208,7 +208,7 @@ static void agent_serve(unsigned int port)
 	nr_cpus = tracecmd_count_cpus();
 	page_size = getpagesize();
 
-	sd = make_vsock(port);
+	sd = trace_make_vsock(port);
 	if (sd < 0)
 		die("Failed to open vsocket");
 
diff --git a/tracecmd/trace-record.c b/tracecmd/trace-record.c
index 51b40ff..e84b714 100644
--- a/tracecmd/trace-record.c
+++ b/tracecmd/trace-record.c
@@ -68,7 +68,7 @@ static int rt_prio;
 
 static int keep;
 
-static const char *output_file = "trace.dat";
+static const char *output_file = TRACE_FILENAME;
 
 static int latency;
 static int sleep_time = 1000;
@@ -536,7 +536,7 @@ static char *get_temp_file(struct buffer_instance *instance, int cpu)
 	return file;
 }
 
-static char *get_guest_file(const char *file, const char *guest)
+char *trace_get_guest_file(const char *file, const char *guest)
 {
 	const char *p;
 	char *out = NULL;
@@ -2772,7 +2772,7 @@ static int connect_port(const char *host, unsigned int port)
 }
 
 #ifdef VSOCK
-static int open_vsock(unsigned int cid, unsigned int port)
+int trace_open_vsock(unsigned int cid, unsigned int port)
 {
 	struct sockaddr_vm addr = {
 		.svm_family = AF_VSOCK,
@@ -2835,7 +2835,7 @@ static bool can_splice_read_vsock(void)
 }
 
 #else
-static inline int open_vsock(unsigned int cid, unsigned int port)
+int trace_open_vsock(unsigned int cid, unsigned int port)
 {
 	die("vsock is not supported");
 	return -1;
@@ -3117,7 +3117,7 @@ create_recorder_instance(struct buffer_instance *instance, const char *file, int
 		if (instance->use_fifos)
 			fd = instance->fds[cpu];
 		else
-			fd = open_vsock(instance->cid, instance->client_ports[cpu]);
+			fd = trace_open_vsock(instance->cid, instance->client_ports[cpu]);
 		if (fd < 0)
 			die("Failed to connect to agent");
 
@@ -3508,7 +3508,7 @@ static void connect_to_agent(struct buffer_instance *instance)
 		use_fifos = nr_fifos > 0;
 	}
 
-	sd = open_vsock(instance->cid, instance->port);
+	sd = trace_open_vsock(instance->cid, instance->port);
 	if (sd < 0)
 		die("Failed to connect to vsocket @%u:%u",
 		    instance->cid, instance->port);
@@ -3562,7 +3562,7 @@ static void setup_guest(struct buffer_instance *instance)
 	int fd;
 
 	/* Create a place to store the guest meta data */
-	file = get_guest_file(output_file, tracecmd_get_instance_name(instance->ftrace));
+	file = trace_get_guest_file(output_file, tracecmd_get_instance_name(instance->ftrace));
 	if (!file)
 		die("Failed to allocate memory");
 
@@ -3887,7 +3887,7 @@ static void write_guest_file(struct buffer_instance *instance)
 	char **temp_files;
 	int i, fd;
 
-	file = get_guest_file(output_file, tracecmd_get_instance_name(instance->ftrace));
+	file = trace_get_guest_file(output_file, tracecmd_get_instance_name(instance->ftrace));
 	if (!file)
 		die("Failed to allocate memory");
 
-- 
2.23.0