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test: detect if we're running through gdb and disable forking mode

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This commit is contained in:
Peter Hutterer 2021-06-08 13:43:40 +10:00
parent dc5751b569
commit 9bc840efe2
1 changed files with 30 additions and 1 deletions
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31
test/pwtest.c
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@ -40,6 +40,7 @@
#include <signal.h> #include <signal.h>
#include <syscall.h> #include <syscall.h>
#include <sys/epoll.h> #include <sys/epoll.h>
#include <sys/ptrace.h>
#include <sys/resource.h> #include <sys/resource.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/timerfd.h> #include <sys/timerfd.h>
@ -1115,6 +1116,34 @@ static void list_tests(struct pwtest_context *ctx)
} }
} }
static bool is_debugger_attached(void)
{
int status;
bool rc;
int pid = fork();
if (pid == -1)
return 0;
if (pid == 0) {
int ppid = getppid();
if (ptrace(PTRACE_ATTACH, ppid, NULL, 0) == 0) {
waitpid(ppid, NULL, 0);
ptrace(PTRACE_CONT, ppid, NULL, 0);
ptrace(PTRACE_DETACH, ppid, NULL, 0);
rc = false;
} else {
rc = true;
}
_exit(rc);
} else {
waitpid(pid, &status, 0);
rc = WEXITSTATUS(status);
}
return !!rc;
}
static void usage(FILE *fp, const char *progname) static void usage(FILE *fp, const char *progname)
{ {
fprintf(fp, "Usage: %s [OPTIONS]\n" fprintf(fp, "Usage: %s [OPTIONS]\n"
@ -1201,7 +1230,7 @@ int main(int argc, char **argv)
} }
} }
if (RUNNING_ON_VALGRIND) if (RUNNING_ON_VALGRIND || is_debugger_attached())
ctx->no_fork = true; ctx->no_fork = true;
find_suites(ctx, suite_filter); find_suites(ctx, suite_filter);