Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (c) 2014 Google, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Selftests for execveat(2).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #ifndef _GNU_SOURCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #define _GNU_SOURCE  /* to get O_PATH, AT_EMPTY_PATH */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <sys/sendfile.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <sys/syscall.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <sys/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <limits.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include "../kselftest.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) static char longpath[2 * PATH_MAX] = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) static char *envp[] = { "IN_TEST=yes", NULL, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) static char *argv[] = { "execveat", "99", NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) static int execveat_(int fd, const char *path, char **argv, char **envp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		     int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #ifdef __NR_execveat
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	return syscall(__NR_execveat, fd, path, argv, envp, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	errno = ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define check_execveat_fail(fd, path, flags, errno)	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	_check_execveat_fail(fd, path, flags, errno, #errno)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) static int _check_execveat_fail(int fd, const char *path, int flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 				int expected_errno, const char *errno_str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	errno = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	printf("Check failure of execveat(%d, '%s', %d) with %s... ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		fd, path?:"(null)", flags, errno_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	rc = execveat_(fd, path, argv, envp, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	if (rc > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		printf("[FAIL] (unexpected success from execveat(2))\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	if (errno != expected_errno) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		printf("[FAIL] (expected errno %d (%s) not %d (%s)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 			expected_errno, strerror(expected_errno),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 			errno, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	printf("[OK]\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static int check_execveat_invoked_rc(int fd, const char *path, int flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 				     int expected_rc, int expected_rc2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	pid_t child;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	int pathlen = path ? strlen(path) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	if (pathlen > 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		printf("Check success of execveat(%d, '%.20s...%s', %d)... ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 			fd, path, (path + pathlen - 20), flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		printf("Check success of execveat(%d, '%s', %d)... ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 			fd, path?:"(null)", flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	child = fork();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	if (child < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		printf("[FAIL] (fork() failed)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	if (child == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 		/* Child: do execveat(). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		rc = execveat_(fd, path, argv, envp, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		printf("[FAIL]: execveat() failed, rc=%d errno=%d (%s)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			rc, errno, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		exit(1);  /* should not reach here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	/* Parent: wait for & check child's exit status. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	rc = waitpid(child, &status, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	if (rc != child) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		printf("[FAIL] (waitpid(%d,...) returned %d)\n", child, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	if (!WIFEXITED(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		printf("[FAIL] (child %d did not exit cleanly, status=%08x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 			child, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	if ((WEXITSTATUS(status) != expected_rc) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	    (WEXITSTATUS(status) != expected_rc2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		printf("[FAIL] (child %d exited with %d not %d nor %d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			child, WEXITSTATUS(status), expected_rc, expected_rc2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	printf("[OK]\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static int check_execveat(int fd, const char *path, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	return check_execveat_invoked_rc(fd, path, flags, 99, 99);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static char *concat(const char *left, const char *right)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	char *result = malloc(strlen(left) + strlen(right) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	strcpy(result, left);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	strcat(result, right);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static int open_or_die(const char *filename, int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	int fd = open(filename, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	if (fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		printf("Failed to open '%s'; "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 			"check prerequisites are available\n", filename);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		exit(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static void exe_cp(const char *src, const char *dest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	int in_fd = open_or_die(src, O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	int out_fd = open(dest, O_RDWR|O_CREAT|O_TRUNC, 0755);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	struct stat info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	fstat(in_fd, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	sendfile(out_fd, in_fd, NULL, info.st_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	close(in_fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	close(out_fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define XX_DIR_LEN 200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static int check_execveat_pathmax(int root_dfd, const char *src, int is_script)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	int fail = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	int ii, count, len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	char longname[XX_DIR_LEN + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	if (*longpath == '\0') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		/* Create a filename close to PATH_MAX in length */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		char *cwd = getcwd(NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		if (!cwd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 			printf("Failed to getcwd(), errno=%d (%s)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 			       errno, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 			return 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		strcpy(longpath, cwd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		strcat(longpath, "/");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		memset(longname, 'x', XX_DIR_LEN - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		longname[XX_DIR_LEN - 1] = '/';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		longname[XX_DIR_LEN] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		count = (PATH_MAX - 3 - strlen(cwd)) / XX_DIR_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		for (ii = 0; ii < count; ii++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 			strcat(longpath, longname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 			mkdir(longpath, 0755);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		len = (PATH_MAX - 3 - strlen(cwd)) - (count * XX_DIR_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		if (len <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 			len = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		memset(longname, 'y', len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		longname[len] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		strcat(longpath, longname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		free(cwd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	exe_cp(src, longpath);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	 * Execute as a pre-opened file descriptor, which works whether this is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	 * a script or not (because the interpreter sees a filename like
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	 * "/dev/fd/20").
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	fd = open(longpath, O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	if (fd > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		printf("Invoke copy of '%s' via filename of length %zu:\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 			src, strlen(longpath));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		fail += check_execveat(fd, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		printf("Failed to open length %zu filename, errno=%d (%s)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 			strlen(longpath), errno, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		fail++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	 * Execute as a long pathname relative to "/".  If this is a script,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	 * the interpreter will launch but fail to open the script because its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	 * name ("/dev/fd/5/xxx....") is bigger than PATH_MAX.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	 * The failure code is usually 127 (POSIX: "If a command is not found,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	 * the exit status shall be 127."), but some systems give 126 (POSIX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	 * "If the command name is found, but it is not an executable utility,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	 * the exit status shall be 126."), so allow either.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	if (is_script)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		fail += check_execveat_invoked_rc(root_dfd, longpath + 1, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 						  127, 126);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		fail += check_execveat(root_dfd, longpath + 1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	return fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static int run_tests(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	int fail = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	char *fullname = realpath("execveat", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	char *fullname_script = realpath("script", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	char *fullname_symlink = concat(fullname, ".symlink");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	int subdir_dfd = open_or_die("subdir", O_DIRECTORY|O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	int subdir_dfd_ephemeral = open_or_die("subdir.ephemeral",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 					       O_DIRECTORY|O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	int dot_dfd = open_or_die(".", O_DIRECTORY|O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	int root_dfd = open_or_die("/", O_DIRECTORY|O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	int dot_dfd_path = open_or_die(".", O_DIRECTORY|O_RDONLY|O_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	int dot_dfd_cloexec = open_or_die(".", O_DIRECTORY|O_RDONLY|O_CLOEXEC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	int fd = open_or_die("execveat", O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	int fd_path = open_or_die("execveat", O_RDONLY|O_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	int fd_symlink = open_or_die("execveat.symlink", O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	int fd_denatured = open_or_die("execveat.denatured", O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	int fd_denatured_path = open_or_die("execveat.denatured",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 					    O_RDONLY|O_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	int fd_script = open_or_die("script", O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	int fd_ephemeral = open_or_die("execveat.ephemeral", O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	int fd_ephemeral_path = open_or_die("execveat.path.ephemeral",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 					    O_RDONLY|O_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	int fd_script_ephemeral = open_or_die("script.ephemeral", O_RDONLY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	int fd_cloexec = open_or_die("execveat", O_RDONLY|O_CLOEXEC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	int fd_script_cloexec = open_or_die("script", O_RDONLY|O_CLOEXEC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	/* Check if we have execveat at all, and bail early if not */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	errno = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	execveat_(-1, NULL, NULL, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	if (errno == ENOSYS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		ksft_exit_skip(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 			"ENOSYS calling execveat - no kernel support?\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	/* Change file position to confirm it doesn't affect anything */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	lseek(fd, 10, SEEK_SET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	/* Normal executable file: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	/*   dfd + path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	fail += check_execveat(subdir_dfd, "../execveat", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	fail += check_execveat(dot_dfd, "execveat", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	fail += check_execveat(dot_dfd_path, "execveat", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	/*   absolute path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	fail += check_execveat(AT_FDCWD, fullname, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	/*   absolute path with nonsense dfd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	fail += check_execveat(99, fullname, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	/*   fd + no path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	fail += check_execveat(fd, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	/*   O_CLOEXEC fd + no path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	fail += check_execveat(fd_cloexec, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	/*   O_PATH fd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	fail += check_execveat(fd_path, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	/* Mess with executable file that's already open: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	/*   fd + no path to a file that's been renamed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	rename("execveat.ephemeral", "execveat.moved");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	fail += check_execveat(fd_ephemeral, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	/*   fd + no path to a file that's been deleted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	unlink("execveat.moved"); /* remove the file now fd open */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	fail += check_execveat(fd_ephemeral, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	/* Mess with executable file that's already open with O_PATH */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	/*   fd + no path to a file that's been deleted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	unlink("execveat.path.ephemeral");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	fail += check_execveat(fd_ephemeral_path, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	/* Invalid argument failures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	fail += check_execveat_fail(fd, "", 0, ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	fail += check_execveat_fail(fd, NULL, AT_EMPTY_PATH, EFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	/* Symlink to executable file: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	/*   dfd + path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	fail += check_execveat(dot_dfd, "execveat.symlink", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	fail += check_execveat(dot_dfd_path, "execveat.symlink", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	/*   absolute path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	fail += check_execveat(AT_FDCWD, fullname_symlink, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	/*   fd + no path, even with AT_SYMLINK_NOFOLLOW (already followed) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	fail += check_execveat(fd_symlink, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	fail += check_execveat(fd_symlink, "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 			       AT_EMPTY_PATH|AT_SYMLINK_NOFOLLOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	/* Symlink fails when AT_SYMLINK_NOFOLLOW set: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	/*   dfd + path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	fail += check_execveat_fail(dot_dfd, "execveat.symlink",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 				    AT_SYMLINK_NOFOLLOW, ELOOP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	fail += check_execveat_fail(dot_dfd_path, "execveat.symlink",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 				    AT_SYMLINK_NOFOLLOW, ELOOP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	/*   absolute path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	fail += check_execveat_fail(AT_FDCWD, fullname_symlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 				    AT_SYMLINK_NOFOLLOW, ELOOP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	/*  Non-regular file failure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	fail += check_execveat_fail(dot_dfd, "pipe", 0, EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	unlink("pipe");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	/* Shell script wrapping executable file: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	/*   dfd + path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	fail += check_execveat(subdir_dfd, "../script", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	fail += check_execveat(dot_dfd, "script", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	fail += check_execveat(dot_dfd_path, "script", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	/*   absolute path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	fail += check_execveat(AT_FDCWD, fullname_script, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	/*   fd + no path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	fail += check_execveat(fd_script, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	fail += check_execveat(fd_script, "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 			       AT_EMPTY_PATH|AT_SYMLINK_NOFOLLOW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	/*   O_CLOEXEC fd fails for a script (as script file inaccessible) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	fail += check_execveat_fail(fd_script_cloexec, "", AT_EMPTY_PATH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 				    ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	fail += check_execveat_fail(dot_dfd_cloexec, "script", 0, ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	/* Mess with script file that's already open: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	/*   fd + no path to a file that's been renamed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	rename("script.ephemeral", "script.moved");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	fail += check_execveat(fd_script_ephemeral, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	/*   fd + no path to a file that's been deleted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	unlink("script.moved"); /* remove the file while fd open */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	fail += check_execveat(fd_script_ephemeral, "", AT_EMPTY_PATH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 	/* Rename a subdirectory in the path: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	rename("subdir.ephemeral", "subdir.moved");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	fail += check_execveat(subdir_dfd_ephemeral, "../script", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	fail += check_execveat(subdir_dfd_ephemeral, "script", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	/* Remove the subdir and its contents */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	unlink("subdir.moved/script");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	unlink("subdir.moved");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	/* Shell loads via deleted subdir OK because name starts with .. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	fail += check_execveat(subdir_dfd_ephemeral, "../script", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	fail += check_execveat_fail(subdir_dfd_ephemeral, "script", 0, ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	/* Flag values other than AT_SYMLINK_NOFOLLOW => EINVAL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	fail += check_execveat_fail(dot_dfd, "execveat", 0xFFFF, EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	/* Invalid path => ENOENT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	fail += check_execveat_fail(dot_dfd, "no-such-file", 0, ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	fail += check_execveat_fail(dot_dfd_path, "no-such-file", 0, ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	fail += check_execveat_fail(AT_FDCWD, "no-such-file", 0, ENOENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 	/* Attempt to execute directory => EACCES */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	fail += check_execveat_fail(dot_dfd, "", AT_EMPTY_PATH, EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	/* Attempt to execute non-executable => EACCES */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	fail += check_execveat_fail(dot_dfd, "Makefile", 0, EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	fail += check_execveat_fail(fd_denatured, "", AT_EMPTY_PATH, EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	fail += check_execveat_fail(fd_denatured_path, "", AT_EMPTY_PATH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 				    EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	/* Attempt to execute nonsense FD => EBADF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	fail += check_execveat_fail(99, "", AT_EMPTY_PATH, EBADF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	fail += check_execveat_fail(99, "execveat", 0, EBADF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	/* Attempt to execute relative to non-directory => ENOTDIR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	fail += check_execveat_fail(fd, "execveat", 0, ENOTDIR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	fail += check_execveat_pathmax(root_dfd, "execveat", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	fail += check_execveat_pathmax(root_dfd, "script", 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 	return fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static void prerequisites(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	const char *script = "#!/bin/sh\nexit $*\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	/* Create ephemeral copies of files */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	exe_cp("execveat", "execveat.ephemeral");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	exe_cp("execveat", "execveat.path.ephemeral");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 	exe_cp("script", "script.ephemeral");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	mkdir("subdir.ephemeral", 0755);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	fd = open("subdir.ephemeral/script", O_RDWR|O_CREAT|O_TRUNC, 0755);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	write(fd, script, strlen(script));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	mkfifo("pipe", 0755);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) int main(int argc, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	int ii;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	const char *verbose = getenv("VERBOSE");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 	if (argc >= 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 		/* If we are invoked with an argument, don't run tests. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 		const char *in_test = getenv("IN_TEST");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 		if (verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 			printf("  invoked with:");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 			for (ii = 0; ii < argc; ii++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 				printf(" [%d]='%s'", ii, argv[ii]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 			printf("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 		/* Check expected environment transferred. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 		if (!in_test || strcmp(in_test, "yes") != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 			printf("[FAIL] (no IN_TEST=yes in env)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 			return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 		/* Use the final argument as an exit code. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 		rc = atoi(argv[argc - 1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 		fflush(stdout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 		prerequisites();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 		if (verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 			envp[1] = "VERBOSE=1";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 		rc = run_tests();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 		if (rc > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 			printf("%d tests failed\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }