1 // SPDX-License-Identifier: GPL-2.0-or-later
2
3 /*
4 * Copyright (c) International Business Machines Corp., 2002
5 * Copyright (c) Linux Test Project, 2003-2023
6 * 12/03/2002 Port to LTP robbiew@us.ibm.com
7 * 06/30/2001 Port to Linux nsharoff@us.ibm.com
8 */
9
10 /*\
11 * [Description]
12 *
13 * Verify that acct() returns proper errno on failure.
14 */
15
16 #include <sys/types.h>
17 #include <sys/stat.h>
18 #include <errno.h>
19 #include <fcntl.h>
20 #include <pwd.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <unistd.h>
24 #include <sys/mount.h>
25
26 #include "tst_test.h"
27
28 #define DIR_MODE 0755
29 #define FILE_EISDIR "."
30 #define FILE_EACCESS "/dev/null"
31 #define FILE_ENOENT "/tmp/does/not/exist"
32 #define FILE_ENOTDIR "./tmpfile/"
33 #define FILE_TMPFILE "./tmpfile"
34 #define FILE_ELOOP "test_file_eloop1"
35 #define FILE_EROFS "ro_mntpoint/file"
36 #define FILE_EFAULT "invalid/file/name"
37
38 static struct passwd *ltpuser;
39
40 static char *file_eisdir;
41 static char *file_eaccess;
42 static char *file_enoent;
43 static char *file_enotdir;
44 static char *file_tmpfile;
45 static char *file_eloop;
46 static char *file_enametoolong;
47 static char *file_erofs;
48 static char *file_null;
49 static char *file_efault;
50
setup_euid(void)51 static void setup_euid(void)
52 {
53 SAFE_SETEUID(ltpuser->pw_uid);
54 }
55
cleanup_euid(void)56 static void cleanup_euid(void)
57 {
58 SAFE_SETEUID(0);
59 }
60
setup_emem(void)61 static void setup_emem(void)
62 {
63 file_efault = SAFE_MMAP(NULL, 1, PROT_NONE,
64 MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
65 }
cleanup_emem(void)66 static void cleanup_emem(void)
67 {
68 SAFE_MUNMAP(file_efault, 1);
69 }
70
71 static struct test_case {
72 char **filename;
73 char *desc;
74 int exp_errno;
75 void (*setupfunc)();
76 void (*cleanfunc)();
77 } tcases[] = {
78 {&file_eisdir, FILE_EISDIR, EISDIR, NULL, NULL},
79 {&file_eaccess, FILE_EACCESS, EACCES, NULL, NULL},
80 {&file_enoent, FILE_ENOENT, ENOENT, NULL, NULL},
81 {&file_enotdir, FILE_ENOTDIR, ENOTDIR, NULL, NULL},
82 {&file_tmpfile, FILE_TMPFILE, EPERM, setup_euid, cleanup_euid},
83 {&file_null, "NULL", EPERM, setup_euid, cleanup_euid},
84 {&file_eloop, FILE_ELOOP, ELOOP, NULL, NULL},
85 {&file_enametoolong, "aaaa...", ENAMETOOLONG, NULL, NULL},
86 {&file_erofs, FILE_EROFS, EROFS, NULL, NULL},
87 {&file_efault, "Invalid address", EFAULT, setup_emem, cleanup_emem},
88 };
89
setup(void)90 static void setup(void)
91 {
92 int fd;
93
94 TEST(acct(NULL));
95
96 ltpuser = SAFE_GETPWNAM("nobody");
97
98 fd = SAFE_CREAT(FILE_TMPFILE, 0777);
99 SAFE_CLOSE(fd);
100
101 TEST(acct(FILE_TMPFILE));
102 if (TST_RET == -1)
103 tst_brk(TBROK | TTERRNO, "acct failed unexpectedly");
104
105 /* turn off acct, so we are in a known state */
106 TEST(acct(NULL));
107 if (TST_RET == -1)
108 tst_brk(TBROK | TTERRNO, "acct(NULL) failed");
109
110 /* ELOOP SETTING */
111 SAFE_SYMLINK(FILE_ELOOP, "test_file_eloop2");
112 SAFE_SYMLINK("test_file_eloop2", FILE_ELOOP);
113
114 memset(file_enametoolong, 'a', PATH_MAX+1);
115 file_enametoolong[PATH_MAX+1] = 0;
116 }
117
verify_acct(unsigned int nr)118 static void verify_acct(unsigned int nr)
119 {
120 struct test_case *tcase = &tcases[nr];
121
122 if (tcase->setupfunc)
123 tcase->setupfunc();
124
125 TST_EXP_FAIL(acct(*tcase->filename), tcase->exp_errno,
126 "acct(%s)", tcase->desc);
127
128 if (tcase->cleanfunc)
129 tcase->cleanfunc();
130 }
131
132 static struct tst_test test = {
133 .needs_root = 1,
134 .mntpoint = "ro_mntpoint",
135 .needs_rofs = 1,
136 .tcnt = ARRAY_SIZE(tcases),
137 .setup = setup,
138 .test = verify_acct,
139 .bufs = (struct tst_buffers []) {
140 {&file_eisdir, .str = FILE_EISDIR},
141 {&file_eaccess, .str = FILE_EACCESS},
142 {&file_enoent, .str = FILE_ENOENT},
143 {&file_enotdir, .str = FILE_ENOTDIR},
144 {&file_tmpfile, .str = FILE_TMPFILE},
145 {&file_eloop, .str = FILE_ELOOP},
146 {&file_enametoolong, .size = PATH_MAX+2},
147 {&file_erofs, .str = FILE_EROFS},
148 {}
149 },
150 .needs_kconfigs = (const char *[]) {
151 "CONFIG_BSD_PROCESS_ACCT=y",
152 NULL,
153 }
154 };
155