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[v6,09/15] selftests/nolibc: export argv0 for some tests

Message ID a7b5d53a8a27eae67625c5a6aec9b420f1217d4f.1688739492.git.falcon@tinylab.org (mailing list archive)
State Handled Elsewhere
Headers show
Series tools/nolibc: add a new syscall helper | expand

Checks

Context Check Description
conchuod/tree_selection fail Failed to apply to next/pending-fixes, riscv/for-next or riscv/master

Commit Message

Zhangjin Wu July 7, 2023, 3:01 p.m. UTC
argv0 is the path to nolibc-test program itself, which is a very good
always existing readable file for some tests, let's export it.

Note, the path may be absolute or relative, please make sure the tests
work with both of them. If it is relative, we must make sure the current
path is the one specified by the PWD environment variable.

Suggested-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/lkml/ZKKbS3cwKcHgnGwu@1wt.eu/
Signed-off-by: Zhangjin Wu <falcon@tinylab.org>
---
 tools/testing/selftests/nolibc/nolibc-test.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index 486334981e60..88b840f86f52 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -43,6 +43,9 @@ 
 /* will be used by nolibc by getenv() */
 char **environ;
 
+/* will be used by some test cases as readable file, please don't write it */
+static const char *argv0;
+
 /* definition of a series of tests */
 struct test {
 	const char *name;              /* test name */
@@ -948,6 +951,7 @@  int main(int argc, char **argv, char **envp)
 	int idx;
 	char *test;
 
+	argv0 = argv[0];
 	environ = envp;
 
 	/* when called as init, it's possible that no console was opened, for