[LTP] [PATCH 1/2] tst_test: Add support for needs_devices

Cyril Hrubis
2020-03-27T13:47:06Z

Which is a list of environment variables needed for a test.

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
---
include/tst_test.h | 3 +++
lib/tst_test.c | 32 ++++++++++++++++++++++++++++++++
2 files changed, 35 insertions(+)

diff --git a/include/tst_test.h b/include/tst_test.h
index 84b6a940f..75d6632a2 100644
--- a/include/tst_test.h
+++ b/include/tst_test.h
@@ -213,6 +213,9 @@ struct tst_test {
/* NULL terminated array of needed kernel drivers */
const char * const *needs_drivers;

+ /* NULL terminated array of devices */
+ const char *const *needs_devices;
+
/*
* NULL terminated array of (/proc, /sys) files to save
* before setup and restore after cleanup
diff --git a/lib/tst_test.c b/lib/tst_test.c
index 9479264b2..da7324b78 100644
--- a/lib/tst_test.c
+++ b/lib/tst_test.c
@@ -464,6 +464,22 @@ static void print_test_tags(void)
printf("\n");
}

+static void print_test_devices(void)
+{
+ const char *const *devices = tst_test->needs_devices;
+ int i;
+
+ if (!devices)
+ return;
+
+ printf("\nNeeded devices\n--------------\n");
+
+ for (i = 0; devices[i]; i++)
+ printf("%s\n", devices[i]);
+
+ printf("\n");
+}
+
static void check_option_collision(void)
{
unsigned int i, j;
@@ -543,6 +559,7 @@ static void parse_opts(int argc, char *argv[])
case 'h':
print_help();
print_test_tags();
+ print_test_devices();
exit(0);
case 'i':
iterations = atoi(optarg);
@@ -890,6 +907,21 @@ static void do_setup(int argc, char *argv[])
tst_brk(TCONF, "%s driver not available", name);
}

+ if (tst_test->needs_devices) {
+ int i;
+ const char *name;
+ int exit = 0;
+
+ for (i = 0; (name = tst_test->needs_devices[i]); i++) {
+ if (!getenv(name)) {
+ tst_res(TINFO, "%s device env variable mising", name);
+ exit = 1;
+ }
+ }
+ if (exit)
+ tst_brk(TCONF, "Device(s) not passed to the test");
+ }
+
if (tst_test->format_device)
tst_test->needs_device = 1;

--
2.24.1