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Date: Wed, 26 Jul 2017 10:58:29 -0600
From: Shuah Khan <shuahkh@....samsung.com>
To: Paul Elder <paul.elder@...t.edu>, shuah@...nel.org,
gregkh@...uxfoundation.org, alicef@...too.org,
alice.ferrazzi@...il.com
Cc: linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
Shuah Khan <shuah@...nel.org>,
Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [PATCH] kselftest: exec: make exec test output conform to TAP13
Hi Paul,
Please see comments below:
On 07/25/2017 11:12 AM, Paul Elder wrote:
> Convert exec test output to TAP13 format, using the ksft framework.
>
> Signed-off-by: Paul Elder <paul.elder@...t.edu>
> ---
>
> Depends on Shuah Khan's patch: "[PATCH 2/3] selftests: kselftest framework: add API to return pass/fail/* counts" (http://www.spinics.net/lists/linux-kselftest/msg01964.html)
>
> tools/testing/selftests/exec/execveat.c | 148 +++++++++++++++++---------------
> 1 file changed, 81 insertions(+), 67 deletions(-)
>
> diff --git a/tools/testing/selftests/exec/execveat.c b/tools/testing/selftests/exec/execveat.c
> index 8d5d1d2ee7c1..dc94c0661459 100644
> --- a/tools/testing/selftests/exec/execveat.c
> +++ b/tools/testing/selftests/exec/execveat.c
> @@ -20,6 +20,8 @@
> #include <string.h>
> #include <unistd.h>
>
> +#include "../kselftest.h"
> +
> static char longpath[2 * PATH_MAX] = "";
> static char *envp[] = { "IN_TEST=yes", NULL, NULL };
> static char *argv[] = { "execveat", "99", NULL };
> @@ -41,23 +43,26 @@ static int _check_execveat_fail(int fd, const char *path, int flags,
> int expected_errno, const char *errno_str)
> {
> int rc;
> + char msg[512];
You need a line between declarations and code.
> + snprintf(msg, 512, "Check failure of execveat(%d, '%s', %d) with %s...\n",
> + fd, path?:"(null)", flags, errno_str);
Is there is a need to use snprinf() here? ksft_test_result_fail() does suppoort
var args now. Also, please use sizeof(msg) instead of 512.
>
> errno = 0;
> - printf("Check failure of execveat(%d, '%s', %d) with %s... ",
> - fd, path?:"(null)", flags, errno_str);
> rc = execveat_(fd, path, argv, envp, flags);
>
> if (rc > 0) {
> - printf("[FAIL] (unexpected success from execveat(2))\n");
> + ksft_test_result_fail(msg);
> + ksft_print_msg("unexpected success from execveat(2)\n");
I think one single message to indicate the test result is desirable as
opposed to two messages.
> return 1;
> }
> if (errno != expected_errno) {
> - printf("[FAIL] (expected errno %d (%s) not %d (%s)\n",
> + ksft_test_result_fail(msg);
> + ksft_print_msg("expected errno %d (%s) not %d (%s)\n",
> expected_errno, strerror(expected_errno),
> errno, strerror(errno));
Same as above.
> return 1;
> }
> - printf("[OK]\n");
> + ksft_test_result_pass(msg);
> return 0;
> }
>
> @@ -68,43 +73,48 @@ static int check_execveat_invoked_rc(int fd, const char *path, int flags,
> int rc;
> pid_t child;
> int pathlen = path ? strlen(path) : 0;
> + char msg[512];
>
> if (pathlen > 40)
> - printf("Check success of execveat(%d, '%.20s...%s', %d)... ",
> + snprintf(msg, 512, "Check success of execveat(%d, '%.20s...%s', %d)...\n",
> fd, path, (path + pathlen - 20), flags);
> else
> - printf("Check success of execveat(%d, '%s', %d)... ",
> + snprintf(msg, 512, "Check success of execveat(%d, '%s', %d)...\n",
> fd, path?:"(null)", flags);
Is there is a need to use snprinf() here? ksft_test_result_fail() does suppoort
var args now. Also, please use sizeof(msg) instead of 512.
> child = fork();
> if (child < 0) {
> - printf("[FAIL] (fork() failed)\n");
> + ksft_test_result_fail(msg);
> + ksft_print_msg("fork() failed\n");
> return 1;
> }
> if (child == 0) {
> /* Child: do execveat(). */
> rc = execveat_(fd, path, argv, envp, flags);
> - printf("[FAIL]: execveat() failed, rc=%d errno=%d (%s)\n",
> + ksft_exit_fail_msg("execveat() failed, rc=%d errno=%d (%s)\n",
> rc, errno, strerror(errno));
> exit(1); /* should not reach here */
> }
> /* Parent: wait for & check child's exit status. */
> rc = waitpid(child, &status, 0);
> if (rc != child) {
> - printf("[FAIL] (waitpid(%d,...) returned %d)\n", child, rc);
> + ksft_test_result_fail(msg);
> + ksft_print_msg("waitpid(%d,...) returned %d\n", child, rc);
I think one single message to indicate the test result is desirable as
opposed to two messages.
> return 1;
> }
> if (!WIFEXITED(status)) {
> - printf("[FAIL] (child %d did not exit cleanly, status=%08x)\n",
> + ksft_test_result_fail(msg);
> + ksft_print_msg("child %d did not exit cleanly, status=%08x\n",
> child, status);
I think one single message to indicate the test result is desirable as
opposed to two messages.
> return 1;
> }
> if ((WEXITSTATUS(status) != expected_rc) &&
> (WEXITSTATUS(status) != expected_rc2)) {
> - printf("[FAIL] (child %d exited with %d not %d nor %d)\n",
> + ksft_test_result_fail(msg);
> + ksft_print_msg("child %d exited with %d not %d nor %d\n",
> child, WEXITSTATUS(status), expected_rc, expected_rc2);
> return 1;
> }
> - printf("[OK]\n");
> + ksft_test_result_pass(msg);
I see why you are doing snprintf() - looks like you are using the msg buffer.
That is okay in this case.
> return 0;
> }
>
> @@ -127,7 +137,7 @@ static int open_or_die(const char *filename, int flags)
> int fd = open(filename, flags);
>
> if (fd < 0) {
> - printf("Failed to open '%s'; "
> + ksft_exit_fail_msg("Failed to open '%s'; "
> "check prerequisites are available\n", filename);
> exit(1);
> }
> @@ -180,11 +190,11 @@ static int check_execveat_pathmax(int dot_dfd, const char *src, int is_script)
> */
> fd = open(longpath, O_RDONLY);
> if (fd > 0) {
> - printf("Invoke copy of '%s' via filename of length %zu:\n",
> + ksft_print_msg("Invoke copy of '%s' via filename of length %zu:\n",
> src, strlen(longpath));
> fail += check_execveat(fd, "", AT_EMPTY_PATH);
> } else {
> - printf("Failed to open length %zu filename, errno=%d (%s)\n",
> + ksft_print_msg("Failed to open length %zu filename, errno=%d (%s)\n",
> strlen(longpath), errno, strerror(errno));
> fail++;
> }
> @@ -210,6 +220,8 @@ static int check_execveat_pathmax(int dot_dfd, const char *src, int is_script)
>
> static int run_tests(void)
> {
> + ksft_print_header();
This goes below the declaration block.
> +
> int fail = 0;
> char *fullname = realpath("execveat", NULL);
> char *fullname_script = realpath("script", NULL);
> @@ -238,7 +250,7 @@ static int run_tests(void)
> errno = 0;
> execveat_(-1, NULL, NULL, NULL, 0);
> if (errno == ENOSYS) {
> - printf("[FAIL] ENOSYS calling execveat - no kernel support?\n");
> + ksft_print_msg("[FAIL] ENOSYS calling execveat - no kernel support?\n");
> return 1;
> }
>
> @@ -247,115 +259,115 @@ static int run_tests(void)
>
> /* Normal executable file: */
> /* dfd + path */
> - fail += check_execveat(subdir_dfd, "../execveat", 0);
> - fail += check_execveat(dot_dfd, "execveat", 0);
> - fail += check_execveat(dot_dfd_path, "execveat", 0);
> + check_execveat(subdir_dfd, "../execveat", 0);
> + check_execveat(dot_dfd, "execveat", 0);
> + check_execveat(dot_dfd_path, "execveat", 0);
> /* absolute path */
> - fail += check_execveat(AT_FDCWD, fullname, 0);
> + check_execveat(AT_FDCWD, fullname, 0);
> /* absolute path with nonsense dfd */
> - fail += check_execveat(99, fullname, 0);
> + check_execveat(99, fullname, 0);
> /* fd + no path */
> - fail += check_execveat(fd, "", AT_EMPTY_PATH);
> + check_execveat(fd, "", AT_EMPTY_PATH);
> /* O_CLOEXEC fd + no path */
> - fail += check_execveat(fd_cloexec, "", AT_EMPTY_PATH);
> + check_execveat(fd_cloexec, "", AT_EMPTY_PATH);
> /* O_PATH fd */
> - fail += check_execveat(fd_path, "", AT_EMPTY_PATH);
> + check_execveat(fd_path, "", AT_EMPTY_PATH);
>
> /* Mess with executable file that's already open: */
> /* fd + no path to a file that's been renamed */
> rename("execveat.ephemeral", "execveat.moved");
> - fail += check_execveat(fd_ephemeral, "", AT_EMPTY_PATH);
> + check_execveat(fd_ephemeral, "", AT_EMPTY_PATH);
> /* fd + no path to a file that's been deleted */
> unlink("execveat.moved"); /* remove the file now fd open */
> - fail += check_execveat(fd_ephemeral, "", AT_EMPTY_PATH);
> + check_execveat(fd_ephemeral, "", AT_EMPTY_PATH);
>
> /* Mess with executable file that's already open with O_PATH */
> /* fd + no path to a file that's been deleted */
> unlink("execveat.path.ephemeral");
> - fail += check_execveat(fd_ephemeral_path, "", AT_EMPTY_PATH);
> + check_execveat(fd_ephemeral_path, "", AT_EMPTY_PATH);
>
> /* Invalid argument failures */
> - fail += check_execveat_fail(fd, "", 0, ENOENT);
> - fail += check_execveat_fail(fd, NULL, AT_EMPTY_PATH, EFAULT);
> + check_execveat_fail(fd, "", 0, ENOENT);
> + check_execveat_fail(fd, NULL, AT_EMPTY_PATH, EFAULT);
>
> /* Symlink to executable file: */
> /* dfd + path */
> - fail += check_execveat(dot_dfd, "execveat.symlink", 0);
> - fail += check_execveat(dot_dfd_path, "execveat.symlink", 0);
> + check_execveat(dot_dfd, "execveat.symlink", 0);
> + check_execveat(dot_dfd_path, "execveat.symlink", 0);
> /* absolute path */
> - fail += check_execveat(AT_FDCWD, fullname_symlink, 0);
> + check_execveat(AT_FDCWD, fullname_symlink, 0);
> /* fd + no path, even with AT_SYMLINK_NOFOLLOW (already followed) */
> - fail += check_execveat(fd_symlink, "", AT_EMPTY_PATH);
> - fail += check_execveat(fd_symlink, "",
> + check_execveat(fd_symlink, "", AT_EMPTY_PATH);
> + check_execveat(fd_symlink, "",
> AT_EMPTY_PATH|AT_SYMLINK_NOFOLLOW);
>
> /* Symlink fails when AT_SYMLINK_NOFOLLOW set: */
> /* dfd + path */
> - fail += check_execveat_fail(dot_dfd, "execveat.symlink",
> + check_execveat_fail(dot_dfd, "execveat.symlink",
> AT_SYMLINK_NOFOLLOW, ELOOP);
> - fail += check_execveat_fail(dot_dfd_path, "execveat.symlink",
> + check_execveat_fail(dot_dfd_path, "execveat.symlink",
> AT_SYMLINK_NOFOLLOW, ELOOP);
> /* absolute path */
> - fail += check_execveat_fail(AT_FDCWD, fullname_symlink,
> + check_execveat_fail(AT_FDCWD, fullname_symlink,
> AT_SYMLINK_NOFOLLOW, ELOOP);
>
> /* Shell script wrapping executable file: */
> /* dfd + path */
> - fail += check_execveat(subdir_dfd, "../script", 0);
> - fail += check_execveat(dot_dfd, "script", 0);
> - fail += check_execveat(dot_dfd_path, "script", 0);
> + check_execveat(subdir_dfd, "../script", 0);
> + check_execveat(dot_dfd, "script", 0);
> + check_execveat(dot_dfd_path, "script", 0);
> /* absolute path */
> - fail += check_execveat(AT_FDCWD, fullname_script, 0);
> + check_execveat(AT_FDCWD, fullname_script, 0);
> /* fd + no path */
> - fail += check_execveat(fd_script, "", AT_EMPTY_PATH);
> - fail += check_execveat(fd_script, "",
> + check_execveat(fd_script, "", AT_EMPTY_PATH);
> + check_execveat(fd_script, "",
> AT_EMPTY_PATH|AT_SYMLINK_NOFOLLOW);
> /* O_CLOEXEC fd fails for a script (as script file inaccessible) */
> - fail += check_execveat_fail(fd_script_cloexec, "", AT_EMPTY_PATH,
> + check_execveat_fail(fd_script_cloexec, "", AT_EMPTY_PATH,
> ENOENT);
> - fail += check_execveat_fail(dot_dfd_cloexec, "script", 0, ENOENT);
> + check_execveat_fail(dot_dfd_cloexec, "script", 0, ENOENT);
>
> /* Mess with script file that's already open: */
> /* fd + no path to a file that's been renamed */
> rename("script.ephemeral", "script.moved");
> - fail += check_execveat(fd_script_ephemeral, "", AT_EMPTY_PATH);
> + check_execveat(fd_script_ephemeral, "", AT_EMPTY_PATH);
> /* fd + no path to a file that's been deleted */
> unlink("script.moved"); /* remove the file while fd open */
> - fail += check_execveat(fd_script_ephemeral, "", AT_EMPTY_PATH);
> + check_execveat(fd_script_ephemeral, "", AT_EMPTY_PATH);
>
> /* Rename a subdirectory in the path: */
> rename("subdir.ephemeral", "subdir.moved");
> - fail += check_execveat(subdir_dfd_ephemeral, "../script", 0);
> - fail += check_execveat(subdir_dfd_ephemeral, "script", 0);
> + check_execveat(subdir_dfd_ephemeral, "../script", 0);
> + check_execveat(subdir_dfd_ephemeral, "script", 0);
> /* Remove the subdir and its contents */
> unlink("subdir.moved/script");
> unlink("subdir.moved");
> /* Shell loads via deleted subdir OK because name starts with .. */
> - fail += check_execveat(subdir_dfd_ephemeral, "../script", 0);
> - fail += check_execveat_fail(subdir_dfd_ephemeral, "script", 0, ENOENT);
> + check_execveat(subdir_dfd_ephemeral, "../script", 0);
> + check_execveat_fail(subdir_dfd_ephemeral, "script", 0, ENOENT);
>
> /* Flag values other than AT_SYMLINK_NOFOLLOW => EINVAL */
> - fail += check_execveat_fail(dot_dfd, "execveat", 0xFFFF, EINVAL);
> + check_execveat_fail(dot_dfd, "execveat", 0xFFFF, EINVAL);
> /* Invalid path => ENOENT */
> - fail += check_execveat_fail(dot_dfd, "no-such-file", 0, ENOENT);
> - fail += check_execveat_fail(dot_dfd_path, "no-such-file", 0, ENOENT);
> - fail += check_execveat_fail(AT_FDCWD, "no-such-file", 0, ENOENT);
> + check_execveat_fail(dot_dfd, "no-such-file", 0, ENOENT);
> + check_execveat_fail(dot_dfd_path, "no-such-file", 0, ENOENT);
> + check_execveat_fail(AT_FDCWD, "no-such-file", 0, ENOENT);
> /* Attempt to execute directory => EACCES */
> fail += check_execveat_fail(dot_dfd, "", AT_EMPTY_PATH, EACCES);
> /* Attempt to execute non-executable => EACCES */
> - fail += check_execveat_fail(dot_dfd, "Makefile", 0, EACCES);
> - fail += check_execveat_fail(fd_denatured, "", AT_EMPTY_PATH, EACCES);
> - fail += check_execveat_fail(fd_denatured_path, "", AT_EMPTY_PATH,
> + check_execveat_fail(dot_dfd, "Makefile", 0, EACCES);
> + check_execveat_fail(fd_denatured, "", AT_EMPTY_PATH, EACCES);
> + check_execveat_fail(fd_denatured_path, "", AT_EMPTY_PATH,
> EACCES);
> /* Attempt to execute nonsense FD => EBADF */
> - fail += check_execveat_fail(99, "", AT_EMPTY_PATH, EBADF);
> - fail += check_execveat_fail(99, "execveat", 0, EBADF);
> + check_execveat_fail(99, "", AT_EMPTY_PATH, EBADF);
> + check_execveat_fail(99, "execveat", 0, EBADF);
> /* Attempt to execute relative to non-directory => ENOTDIR */
> - fail += check_execveat_fail(fd, "execveat", 0, ENOTDIR);
> + check_execveat_fail(fd, "execveat", 0, ENOTDIR);
>
> - fail += check_execveat_pathmax(dot_dfd, "execveat", 0);
> - fail += check_execveat_pathmax(dot_dfd, "script", 1);
> - return fail;
> + check_execveat_pathmax(dot_dfd, "execveat", 0);
> + check_execveat_pathmax(dot_dfd, "script", 1);
> + return ksft_get_fail_cnt();
> }
>
> static void prerequisites(void)
> @@ -405,8 +417,10 @@ int main(int argc, char **argv)
> if (verbose)
> envp[1] = "VERBOSE=1";
> rc = run_tests();
> - if (rc > 0)
> - printf("%d tests failed\n", rc);
> + if (rc)
> + ksft_exit_fail();
> + else
> + ksft_exit_pass();
> }
> return rc;
> }
>
Looks like main() still needs some changes for:
if (!in_test || strcmp(in_test, "yes") != 0) {
case.
thanks,
-- Shuah
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