[ndctl PATCH v4 2/4] cxl/monitor: replace monitor.log_file with monitor.ctx.log_file

[Li Zhijian]

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")
Reviewed-by: Dave Jiang <dave.ji...@intel.com>
Signed-off-by: Li Zhijian <lizhij...@fujitsu.com>
---
V4: add reviewed tag
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(-)

diff --git a/cxl/monitor.c b/cxl/monitor.c
index d8245ed8d0e9..e83455b63d35 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;
 }
-- 
2.29.2