Module Name: src Committed By: kamil Date: Wed Nov 23 05:00:20 UTC 2016
Modified Files: src/tests/kernel: t_ptrace_wait.c Log Message: Add io_read_write_handshake to t_ptrace_wait{,3,4,6,id,pid} Verify PT_IO with PIOD_READ_D and PIOD_WRITE_D handshake Sponsored by <The NetBSD Foundation> To generate a diff of this commit: cvs rdiff -u -r1.22 -r1.23 src/tests/kernel/t_ptrace_wait.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/tests/kernel/t_ptrace_wait.c diff -u src/tests/kernel/t_ptrace_wait.c:1.22 src/tests/kernel/t_ptrace_wait.c:1.23 --- src/tests/kernel/t_ptrace_wait.c:1.22 Wed Nov 23 03:02:56 2016 +++ src/tests/kernel/t_ptrace_wait.c Wed Nov 23 05:00:20 2016 @@ -1,4 +1,4 @@ -/* $NetBSD: t_ptrace_wait.c,v 1.22 2016/11/23 03:02:56 kamil Exp $ */ +/* $NetBSD: t_ptrace_wait.c,v 1.23 2016/11/23 05:00:20 kamil Exp $ */ /*- * Copyright (c) 2016 The NetBSD Foundation, Inc. @@ -27,7 +27,7 @@ */ #include <sys/cdefs.h> -__RCSID("$NetBSD: t_ptrace_wait.c,v 1.22 2016/11/23 03:02:56 kamil Exp $"); +__RCSID("$NetBSD: t_ptrace_wait.c,v 1.23 2016/11/23 05:00:20 kamil Exp $"); #include <sys/param.h> #include <sys/types.h> @@ -3107,6 +3107,92 @@ ATF_TC_BODY(write4, tc) TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); } +ATF_TC(io_read_write_handshake); +ATF_TC_HEAD(io_read_write_handshake, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Verify PT_IO with PIOD_READ_D and PIOD_WRITE_D handshake"); +} + +ATF_TC_BODY(io_read_write_handshake, tc) +{ + const int exitval = 5; + const int sigval = SIGSTOP; + pid_t child, wpid; + uint8_t lookup_me_fromtracee = 0; + const uint8_t magic_fromtracee = (uint8_t)random(); + uint8_t lookup_me_totracee = 0; + const uint8_t magic_totracee = (uint8_t)random(); + struct ptrace_io_desc io_fromtracee = { + .piod_op = PIOD_READ_D, + .piod_offs = &lookup_me_fromtracee, + .piod_addr = &lookup_me_fromtracee, + .piod_len = sizeof(lookup_me_fromtracee) + }; + struct ptrace_io_desc io_totracee = { + .piod_op = PIOD_WRITE_D, + .piod_offs = &lookup_me_totracee, + .piod_addr = &lookup_me_totracee, + .piod_len = sizeof(lookup_me_totracee) + }; +#if defined(TWAIT_HAVE_STATUS) + int status; +#endif + + printf("Before forking process PID=%d\n", getpid()); + child = atf_utils_fork(); + if (child == 0) { + printf("Before calling PT_TRACE_ME from child %d\n", getpid()); + FORKEE_ASSERT(ptrace(PT_TRACE_ME, 0, NULL, 0) != -1); + + lookup_me_fromtracee = magic_fromtracee; + + printf("Before raising %s from child\n", strsignal(sigval)); + FORKEE_ASSERT(raise(sigval) == 0); + + FORKEE_ASSERT_EQ(lookup_me_totracee, magic_totracee); + + printf("Before exiting of the child process\n"); + _exit(exitval); + } + printf("Parent process PID=%d, child's PID=%d\n", getpid(), child); + + printf("Before calling %s() for the child\n", TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_stopped(status, sigval); + + printf("Read lookup_me_fromtracee PID=%d by tracer (PID=%d)\n", + child, getpid()); + ATF_REQUIRE(ptrace(PT_IO, child, &io_fromtracee, 0) != -1); + + ATF_REQUIRE_EQ_MSG(lookup_me_fromtracee, magic_fromtracee, + "got value %" PRIx8 " != expected %" PRIx8, lookup_me_fromtracee, + magic_fromtracee); + + lookup_me_totracee = magic_totracee; + + printf("Write lookup_me_totracee to PID=%d by tracer (PID=%d)\n", + child, getpid()); + ATF_REQUIRE(ptrace(PT_IO, child, &io_totracee, 0) != -1); + + ATF_REQUIRE_EQ_MSG(lookup_me_totracee, magic_totracee, + "got value %" PRIx8 " != expected %" PRIx8, lookup_me_totracee, + magic_totracee); + + printf("Before resuming the child process where it left off and " + "without signal to be sent\n"); + ATF_REQUIRE(ptrace(PT_CONTINUE, child, (void *)1, 0) != -1); + + printf("Before calling %s() for the child\n", TWAIT_FNAME); + TWAIT_REQUIRE_SUCCESS(wpid = TWAIT_GENERIC(child, &status, 0), child); + + validate_status_exited(status, exitval); + + printf("Before calling %s() for the child\n", TWAIT_FNAME); + TWAIT_REQUIRE_FAILURE(ECHILD, wpid = TWAIT_GENERIC(child, &status, 0)); +} + #if defined(TWAIT_HAVE_PID) #define ATF_TP_ADD_TC_HAVE_PID(a,b) ATF_TP_ADD_TC(a,b) #else @@ -3159,5 +3245,7 @@ ATF_TP_ADD_TCS(tp) ATF_TP_ADD_TC(tp, write3); ATF_TP_ADD_TC(tp, write4); + ATF_TP_ADD_TC(tp, io_read_write_handshake); + return atf_no_error(); }