[PATCH i-g-t v2 3/5] runner/settings: Add function to set IGT_RUNNER_DATA environment variable

[Naladala Ramanaidu <ramanaidu.naladala@intel.com>]

Introduced set_runner_datadir() to set the IGT_RUNNER_DATA environment
variable. This function uses absolute_path() to convert the relative
path "../share/igt-gpu-tools" to an absolute path. Update the
runner/runner code to call set_runner_datadir() and handle errors
appropriately.

v2: Fix review comments. (Kamil)

Signed-off-by: Naladala Ramanaidu <ramanaidu.naladala@intel.com>
---
 runner/runner.c   | 8 ++++++++
 runner/settings.c | 9 +++++++++
 runner/settings.h | 1 +
 3 files changed, 18 insertions(+)

diff --git a/runner/runner.c b/runner/runner.c
index 4855ad641..950eb5662 100644
--- a/runner/runner.c
+++ b/runner/runner.c
@@ -12,8 +12,13 @@ int main(int argc, char **argv)
 	struct job_list job_list;
 	struct execute_state state;
 	int exitcode = 0;
+	int data_flag = 0;
 
 	init_settings(&settings);
+	data_flag = set_runner_datadir();
+	if (data_flag)
+		fprintf(stderr, "Data dir path not set\n");
+
 	init_job_list(&job_list);
 
 	if (!parse_options(argc, argv, &settings)) {
@@ -49,6 +54,9 @@ int main(int argc, char **argv)
 		exitcode = 1;
 	}
 
+	if (!data_flag)
+		unsetenv("IGT_RUNNER_DATA");
+
 	printf("Done.\n");
 	return exitcode;
 }
diff --git a/runner/settings.c b/runner/settings.c
index bea0c3059..c8220be32 100644
--- a/runner/settings.c
+++ b/runner/settings.c
@@ -589,6 +589,15 @@ char *absolute_path(const char *path)
 	return result;
 }
 
+int set_runner_datadir(void)
+{
+	const char *datapath = "../share/igt-gpu-tools";
+	char *abpath;
+
+	abpath = absolute_path(datapath);
+	return setenv("IGT_RUNNER_DATA", abpath, 1);
+}
+
 static char *bin_path(char *fname)
 {
 	char *path, *p;
diff --git a/runner/settings.h b/runner/settings.h
index 7e6cd11e2..5926817b6 100644
--- a/runner/settings.h
+++ b/runner/settings.h
@@ -150,5 +150,6 @@ bool serialize_settings(struct settings *settings);
 
 bool read_settings_from_file(struct settings *settings, FILE* f);
 bool read_settings_from_dir(struct settings *settings, int dirfd);
+int set_runner_datadir(void);
 
 #endif
-- 
2.43.0