Author: jhb Date: Mon Jul 15 21:26:55 2019 New Revision: 350014 URL: https://svnweb.freebsd.org/changeset/base/350014
Log: Add a test for PT_GET_SC_ARGS. Reviewed by: kib MFC after: 1 month Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D20899 Modified: head/tests/sys/kern/ptrace_test.c Modified: head/tests/sys/kern/ptrace_test.c ============================================================================== --- head/tests/sys/kern/ptrace_test.c Mon Jul 15 21:25:16 2019 (r350013) +++ head/tests/sys/kern/ptrace_test.c Mon Jul 15 21:26:55 2019 (r350014) @@ -3904,6 +3904,86 @@ ATF_TC_BODY(ptrace__PT_LWPINFO_stale_siginfo, tc) ATF_REQUIRE(errno == ECHILD); } +/* + * A simple test of PT_GET_SC_ARGS. + */ +ATF_TC_WITHOUT_HEAD(ptrace__syscall_args); +ATF_TC_BODY(ptrace__syscall_args, tc) +{ + struct ptrace_lwpinfo pl; + pid_t fpid, wpid; + register_t args[2]; + int events, status; + + ATF_REQUIRE((fpid = fork()) != -1); + if (fpid == 0) { + trace_me(); + kill(getpid(), 0); + exit(1); + } + + /* The first wait() should report the stop from SIGSTOP. */ + wpid = waitpid(fpid, &status, 0); + ATF_REQUIRE(wpid == fpid); + ATF_REQUIRE(WIFSTOPPED(status)); + ATF_REQUIRE(WSTOPSIG(status) == SIGSTOP); + + /* + * Continue the process ignoring the signal, but enabling + * syscall entry traps. + */ + ATF_REQUIRE(ptrace(PT_TO_SCE, fpid, (caddr_t)1, 0) == 0); + + /* + * The next stop should be the syscall entry from getpid(). + */ + wpid = waitpid(fpid, &status, 0); + ATF_REQUIRE(wpid == fpid); + ATF_REQUIRE(WIFSTOPPED(status)); + ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP); + + ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1); + ATF_REQUIRE(pl.pl_flags & PL_FLAG_SCE); + ATF_REQUIRE(pl.pl_syscall_code == SYS_getpid); + + ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0); + + /* + * The next stop should be the syscall entry from kill(). + */ + wpid = waitpid(fpid, &status, 0); + ATF_REQUIRE(wpid == fpid); + ATF_REQUIRE(WIFSTOPPED(status)); + ATF_REQUIRE(WSTOPSIG(status) == SIGTRAP); + + ATF_REQUIRE(ptrace(PT_LWPINFO, wpid, (caddr_t)&pl, sizeof(pl)) != -1); + ATF_REQUIRE(pl.pl_flags & PL_FLAG_SCE); + ATF_REQUIRE(pl.pl_syscall_code == SYS_kill); + ATF_REQUIRE(pl.pl_syscall_narg == 2); + + ATF_REQUIRE(ptrace(PT_GET_SC_ARGS, wpid, (caddr_t)args, + sizeof(args)) != -1); + ATF_REQUIRE(args[0] == wpid); + ATF_REQUIRE(args[1] == 0); + + /* Disable syscall tracing and continue the child to let it exit. */ + ATF_REQUIRE(ptrace(PT_GET_EVENT_MASK, fpid, (caddr_t)&events, + sizeof(events)) == 0); + events &= ~PTRACE_SYSCALL; + ATF_REQUIRE(ptrace(PT_SET_EVENT_MASK, fpid, (caddr_t)&events, + sizeof(events)) == 0); + ATF_REQUIRE(ptrace(PT_CONTINUE, fpid, (caddr_t)1, 0) == 0); + + /* The last event should be for the child process's exit. */ + wpid = waitpid(fpid, &status, 0); + ATF_REQUIRE(WIFEXITED(status)); + ATF_REQUIRE(WEXITSTATUS(status) == 1); + + wpid = wait(&status); + ATF_REQUIRE(wpid == -1); + ATF_REQUIRE(errno == ECHILD); +} + ATF_TP_ADD_TCS(tp) { @@ -3965,6 +4045,7 @@ ATF_TP_ADD_TCS(tp) ATF_TP_ADD_TC(tp, ptrace__PT_CONTINUE_different_thread); #endif ATF_TP_ADD_TC(tp, ptrace__PT_LWPINFO_stale_siginfo); + ATF_TP_ADD_TC(tp, ptrace__syscall_args); return (atf_no_error()); } _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
