[ndctl,v2,2/6] cxl/monitor: replace monitor.log_file with monitor.ctx.log_file

Commit Message

Zhijian Li (Fujitsu) May 22, 2023, 6:51 a.m. UTC

Commit ba5825b0b7e0 ("ndctl/monitor: move common logging functions to util/log.c")
have replaced monitor.log_file with monitor.ctx.log_file for
ndctl-monitor, but for cxl-monitor, it forgot to do such work.

So where user specifies its own logfile, a segmentation fault will be
trggered like below:

 # build/cxl/cxl monitor -l ./monitor.log
Segmentation fault (core dumped)

Fixes: 299f69f974a6 ("cxl/monitor: add a new monitor command for CXL trace events")
Signed-off-by: Li Zhijian <[e-mail]>
---
V2: exchange order of previous patch1 and patch2 # Alison
    a few commit log updated
---
 cxl/monitor.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

Patch

diff --git a/cxl/monitor.c b/cxl/monitor.c
index c6df2bad3c53..f0e3c4c3f45c 100644
--- a/cxl/monitor.c
+++ b/cxl/monitor.c
@@ -37,7 +37,6 @@  const char *default_log = "/var/log/cxl-monitor.log";
 static struct monitor {
 	const char *log;
 	struct log_ctx ctx;
-	FILE *log_file;
 	bool human;
 	bool verbose;
 	bool daemon;
@@ -192,8 +191,8 @@  int cmd_monitor(int argc, const char **argv, struct cxl_ctx *ctx)
 	if (strncmp(log, "./standard", 10) == 0)
 		monitor.ctx.log_fn = log_standard;
 	else {
-		monitor.log_file = fopen(log, "a+");
-		if (!monitor.log_file) {
+		monitor.ctx.log_file = fopen(log, "a+");
+		if (!monitor.ctx.log_file) {
 			rc = -errno;
 			error("open %s failed: %d\n", log, rc);
 			goto out;
@@ -212,7 +211,7 @@  int cmd_monitor(int argc, const char **argv, struct cxl_ctx *ctx)
 	rc = monitor_event(ctx);
 
 out:
-	if (monitor.log_file)
-		fclose(monitor.log_file);
+	if (monitor.ctx.log_file)
+		fclose(monitor.ctx.log_file);
 	return rc;
 }