The branch main has been updated by des: URL: https://cgit.FreeBSD.org/src/commit/?id=c7dd4601aeebbc1bbe131cbe6747476c124b47fe
commit c7dd4601aeebbc1bbe131cbe6747476c124b47fe Author: Dag-Erling Smørgrav <[email protected]> AuthorDate: 2023-09-26 20:07:03 +0000 Commit: Dag-Erling Smørgrav <[email protected]> CommitDate: 2023-09-26 20:07:10 +0000 libc: Add a rudimentary test for quick_exit(3). Sponsored by: Klara, Inc. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D41937 --- lib/libc/tests/stdlib/Makefile | 1 + lib/libc/tests/stdlib/quick_exit_test.c | 81 +++++++++++++++++++++++++++++++++ 2 files changed, 82 insertions(+) diff --git a/lib/libc/tests/stdlib/Makefile b/lib/libc/tests/stdlib/Makefile index a2a6420aba41..860e530389df 100644 --- a/lib/libc/tests/stdlib/Makefile +++ b/lib/libc/tests/stdlib/Makefile @@ -12,6 +12,7 @@ ATF_TESTS_C+= qsort_b_test ATF_TESTS_C+= qsort_r_compat_test ATF_TESTS_C+= qsort_r_test ATF_TESTS_C+= qsort_s_test +ATF_TESTS_C+= quick_exit_test ATF_TESTS_C+= set_constraint_handler_s_test ATF_TESTS_C+= strfmon_test ATF_TESTS_C+= tsearch_test diff --git a/lib/libc/tests/stdlib/quick_exit_test.c b/lib/libc/tests/stdlib/quick_exit_test.c new file mode 100644 index 000000000000..9feed8a6fa63 --- /dev/null +++ b/lib/libc/tests/stdlib/quick_exit_test.c @@ -0,0 +1,81 @@ +/*- + * Copyright (c) 2023 Klara, Inc. + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#include <sys/wait.h> + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include <atf-c.h> + +static void func_a(void) +{ + if (write(STDOUT_FILENO, "a", 1) != 1) + _Exit(1); +} + +static void func_b(void) +{ + if (write(STDOUT_FILENO, "b", 1) != 1) + _Exit(1); +} + +static void func_c(void) +{ + if (write(STDOUT_FILENO, "c", 1) != 1) + _Exit(1); +} + +static void child(void) +{ + // this will be received by the parent + printf("hello, "); + fflush(stdout); + // this won't, because quick_exit() does not flush + printf("world"); + // these will be called in reverse order, producing "abc" + if (at_quick_exit(func_c) != 0 || + at_quick_exit(func_b) != 0 || + at_quick_exit(func_a) != 0) + _Exit(1); + quick_exit(0); +} + +ATF_TC_WITHOUT_HEAD(quick_exit); +ATF_TC_BODY(quick_exit, tc) +{ + char buf[100] = ""; + ssize_t len; + int p[2], wstatus = 0; + pid_t pid; + + ATF_REQUIRE(pipe(p) == 0); + pid = fork(); + if (pid == 0) { + if (dup2(p[1], STDOUT_FILENO) < 0) + _Exit(1); + (void)close(p[1]); + (void)close(p[0]); + child(); + _Exit(1); + } + ATF_REQUIRE_MSG(pid > 0, + "expect fork() to succeed"); + ATF_CHECK_EQ_MSG(pid, waitpid(pid, &wstatus, 0), + "expect to collect child process"); + ATF_CHECK_EQ_MSG(0, wstatus, + "expect child to exit cleanly"); + ATF_CHECK_MSG((len = read(p[0], buf, sizeof(buf))) > 0, + "expect to receive output from child"); + ATF_CHECK_STREQ("hello, abc", buf); +} + +ATF_TP_ADD_TCS(tp) +{ + ATF_TP_ADD_TC(tp, quick_exit); + return (atf_no_error()); +}
