trace: add trace directory configuration parameter

[dpdk.git] / lib / librte_eal / common / eal_common_trace_utils.c

diff --git a/lib/librte_eal/common/eal_common_trace_utils.c b/lib/librte_eal/common/eal_common_trace_utils.c
index 7c86a66..f5b8d4e 100644 (file)
--- a/lib/librte_eal/common/eal_common_trace_utils.c
+++ b/lib/librte_eal/common/eal_common_trace_utils.c
@@ -118,6 +118,22 @@ fail:
        return -rte_errno;
 }
 
+static int
+trace_dir_update(const char *str)
+{
+       struct trace *trace = trace_obj_get();
+       int rc, remaining;
+
+       remaining = sizeof(trace->dir) - trace->dir_offset;
+       rc = rte_strscpy(&trace->dir[0] + trace->dir_offset, str, remaining);
+       if (rc < 0)
+               goto fail;
+
+       trace->dir_offset += rc;
+fail:
+       return rc;
+}
+
 int
 eal_trace_args_save(const char *optarg)
 {
@@ -177,6 +193,37 @@ trace_args_apply(const char *arg)
        return 0;
 }
 
+int
+eal_trace_dir_args_save(char const *optarg)
+{
+       struct trace *trace = trace_obj_get();
+       uint32_t size = sizeof(trace->dir);
+       char *dir_path = NULL;
+       int rc;
+
+       if (optarg == NULL) {
+               trace_err("no optarg is passed");
+               return -EINVAL;
+       }
+
+       if (strlen(optarg) >= size) {
+               trace_err("input string is too big");
+               return -ENAMETOOLONG;
+       }
+
+       dir_path = (char *)calloc(1, size);
+       if (dir_path == NULL) {
+               trace_err("fail to allocate memory");
+               return -ENOMEM;
+       }
+
+       sprintf(dir_path, "%s/", optarg);
+       rc = trace_dir_update(dir_path);
+
+       free(dir_path);
+       return rc;
+}
+
 int
 trace_epoch_time_save(void)
 {
@@ -247,6 +294,10 @@ trace_mkdir(void)
                        return rc;
                }
 
+               rc = trace_dir_update(dir_path);
+               free(dir_path);
+               if (rc < 0)
+                       return rc;
        }
 
        /* Create the path if it t exist, no "mkdir -p" available here */
@@ -258,6 +309,9 @@ trace_mkdir(void)
        }
 
        rc = trace_session_name_generate(session);
+       if (rc < 0)
+               return rc;
+       rc = trace_dir_update(session);
        if (rc < 0)
                return rc;