xref: /aosp_15_r20/external/ltp/testcases/kernel/syscalls/execve/execve04.c (revision 49cdfc7efb34551c7342be41a7384b9c40d7cab7)
1*49cdfc7eSAndroid Build Coastguard Worker // SPDX-License-Identifier: GPL-2.0-or-later
2*49cdfc7eSAndroid Build Coastguard Worker /*
3*49cdfc7eSAndroid Build Coastguard Worker  * Copyright (c) 2018 Linux Test Project
4*49cdfc7eSAndroid Build Coastguard Worker  * Copyright (c) 2015 Cyril Hrubis <[email protected]>
5*49cdfc7eSAndroid Build Coastguard Worker  * Copyright (c) International Business Machines Corp., 2001
6*49cdfc7eSAndroid Build Coastguard Worker  *
7*49cdfc7eSAndroid Build Coastguard Worker  * Ported to LTP: Wayne Boyer
8*49cdfc7eSAndroid Build Coastguard Worker  *  04/2008 Roy Lee <[email protected]>
9*49cdfc7eSAndroid Build Coastguard Worker  */
10*49cdfc7eSAndroid Build Coastguard Worker 
11*49cdfc7eSAndroid Build Coastguard Worker /*\
12*49cdfc7eSAndroid Build Coastguard Worker  * [Description]
13*49cdfc7eSAndroid Build Coastguard Worker  *
14*49cdfc7eSAndroid Build Coastguard Worker  * Attempt to execve(2) a file which is being opened by another process for
15*49cdfc7eSAndroid Build Coastguard Worker  * writing fails with ETXTBSY.
16*49cdfc7eSAndroid Build Coastguard Worker  */
17*49cdfc7eSAndroid Build Coastguard Worker 
18*49cdfc7eSAndroid Build Coastguard Worker #ifndef _GNU_SOURCE
19*49cdfc7eSAndroid Build Coastguard Worker #define _GNU_SOURCE
20*49cdfc7eSAndroid Build Coastguard Worker #endif
21*49cdfc7eSAndroid Build Coastguard Worker #include <sys/types.h>
22*49cdfc7eSAndroid Build Coastguard Worker #include <sys/wait.h>
23*49cdfc7eSAndroid Build Coastguard Worker #include <errno.h>
24*49cdfc7eSAndroid Build Coastguard Worker #include <fcntl.h>
25*49cdfc7eSAndroid Build Coastguard Worker #include <libgen.h>
26*49cdfc7eSAndroid Build Coastguard Worker #include <stdio.h>
27*49cdfc7eSAndroid Build Coastguard Worker #include <unistd.h>
28*49cdfc7eSAndroid Build Coastguard Worker #include <stdlib.h>
29*49cdfc7eSAndroid Build Coastguard Worker 
30*49cdfc7eSAndroid Build Coastguard Worker #include "tst_test.h"
31*49cdfc7eSAndroid Build Coastguard Worker 
32*49cdfc7eSAndroid Build Coastguard Worker #define TEST_APP "execve_child"
33*49cdfc7eSAndroid Build Coastguard Worker 
34*49cdfc7eSAndroid Build Coastguard Worker static void do_child(void);
35*49cdfc7eSAndroid Build Coastguard Worker 
verify_execve(void)36*49cdfc7eSAndroid Build Coastguard Worker static void verify_execve(void)
37*49cdfc7eSAndroid Build Coastguard Worker {
38*49cdfc7eSAndroid Build Coastguard Worker 	pid_t pid;
39*49cdfc7eSAndroid Build Coastguard Worker 	char *argv[2] = {TEST_APP, NULL};
40*49cdfc7eSAndroid Build Coastguard Worker 
41*49cdfc7eSAndroid Build Coastguard Worker 	pid = SAFE_FORK();
42*49cdfc7eSAndroid Build Coastguard Worker 	if (pid == 0)
43*49cdfc7eSAndroid Build Coastguard Worker 		do_child();
44*49cdfc7eSAndroid Build Coastguard Worker 
45*49cdfc7eSAndroid Build Coastguard Worker 	TST_CHECKPOINT_WAIT(0);
46*49cdfc7eSAndroid Build Coastguard Worker 
47*49cdfc7eSAndroid Build Coastguard Worker 	TEST(execve(TEST_APP, argv, environ));
48*49cdfc7eSAndroid Build Coastguard Worker 
49*49cdfc7eSAndroid Build Coastguard Worker 	if (TST_ERR != ETXTBSY)
50*49cdfc7eSAndroid Build Coastguard Worker 		tst_res(TFAIL | TTERRNO, "execve succeeded, expected failure");
51*49cdfc7eSAndroid Build Coastguard Worker 	else
52*49cdfc7eSAndroid Build Coastguard Worker 		tst_res(TPASS | TTERRNO, "execve failed as expected");
53*49cdfc7eSAndroid Build Coastguard Worker 
54*49cdfc7eSAndroid Build Coastguard Worker 	TST_CHECKPOINT_WAKE(0);
55*49cdfc7eSAndroid Build Coastguard Worker }
56*49cdfc7eSAndroid Build Coastguard Worker 
do_child(void)57*49cdfc7eSAndroid Build Coastguard Worker static void do_child(void)
58*49cdfc7eSAndroid Build Coastguard Worker {
59*49cdfc7eSAndroid Build Coastguard Worker 	int fd = SAFE_OPEN(TEST_APP, O_WRONLY);
60*49cdfc7eSAndroid Build Coastguard Worker 
61*49cdfc7eSAndroid Build Coastguard Worker 	TST_CHECKPOINT_WAKE_AND_WAIT(0);
62*49cdfc7eSAndroid Build Coastguard Worker 
63*49cdfc7eSAndroid Build Coastguard Worker 	SAFE_CLOSE(fd);
64*49cdfc7eSAndroid Build Coastguard Worker 
65*49cdfc7eSAndroid Build Coastguard Worker 	exit(0);
66*49cdfc7eSAndroid Build Coastguard Worker }
67*49cdfc7eSAndroid Build Coastguard Worker 
setup(void)68*49cdfc7eSAndroid Build Coastguard Worker static void setup(void)
69*49cdfc7eSAndroid Build Coastguard Worker {
70*49cdfc7eSAndroid Build Coastguard Worker 	if ((tst_kvercmp(6, 11, 0)) >= 0) {
71*49cdfc7eSAndroid Build Coastguard Worker 		tst_brk(TCONF, "Skipping test, write to executed file is "
72*49cdfc7eSAndroid Build Coastguard Worker 			"allowed since 6.11-rc1.\n"
73*49cdfc7eSAndroid Build Coastguard Worker 			"2a010c412853 (\"fs: don't block i_writecount during exec\")");
74*49cdfc7eSAndroid Build Coastguard Worker 	}
75*49cdfc7eSAndroid Build Coastguard Worker }
76*49cdfc7eSAndroid Build Coastguard Worker 
77*49cdfc7eSAndroid Build Coastguard Worker static struct tst_test test = {
78*49cdfc7eSAndroid Build Coastguard Worker 	.setup = setup,
79*49cdfc7eSAndroid Build Coastguard Worker 	.test_all = verify_execve,
80*49cdfc7eSAndroid Build Coastguard Worker 	.forks_child = 1,
81*49cdfc7eSAndroid Build Coastguard Worker 	.child_needs_reinit = 1,
82*49cdfc7eSAndroid Build Coastguard Worker 	.needs_checkpoints = 1,
83*49cdfc7eSAndroid Build Coastguard Worker 	.resource_files = (const char *const []) {
84*49cdfc7eSAndroid Build Coastguard Worker 		TEST_APP,
85*49cdfc7eSAndroid Build Coastguard Worker 		NULL
86*49cdfc7eSAndroid Build Coastguard Worker 	}
87*49cdfc7eSAndroid Build Coastguard Worker };
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