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selftests/nolibc: export argv0 for some tests

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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>
Signed-off-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Zhangjin Wu 2023-07-07 23:01:09 +08:00 committed by Willy Tarreau
parent 4201cfce15
commit 938b5b9833
1 changed files with 4 additions and 0 deletions
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4
tools/testing/selftests/nolibc/nolibc-test.c
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@ -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