plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of version 2 of the GNU General Public License as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it would be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 11 | * |
| 12 | * You should have received a copy of the GNU General Public License along |
Wanlong Gao | fed9641 | 2012-10-24 10:10:29 +0800 | [diff] [blame] | 13 | * with this program; if not, write the Free Software Foundation, Inc., |
| 14 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 15 | * |
| 16 | */ |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 17 | |
| 18 | /* |
| 19 | * AUTHOR: Madhu T L <madhu.tarikere@wipro.com> |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 20 | * |
| 21 | * DESCRIPTION |
| 22 | * Verify that, |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 23 | * 1. delete_module(2) returns -1 and sets errno to ENOENT for nonexistent |
| 24 | * module entry. |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 25 | * 2. delete_module(2) returns -1 and sets errno to EFAULT, if |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 26 | * module name parameter is outside program's accessible address space. |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 27 | * 3. delete_module(2) returns -1 and sets errno to EPERM, if effective |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 28 | * user id of the caller is not superuser. |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 29 | */ |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 30 | |
| 31 | #include <errno.h> |
| 32 | #include <pwd.h> |
| 33 | #include <sys/types.h> |
subrata_modak | 024988b | 2008-09-24 12:55:33 +0000 | [diff] [blame] | 34 | #include <unistd.h> |
| 35 | #include <limits.h> |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 36 | #if HAVE_LINUX_MODULE_H |
| 37 | #include <linux/module.h> |
| 38 | #else |
| 39 | /* As per http://tomoyo.sourceforge.jp/cgi-bin/lxr/source/include/linux/moduleparam.h?a=ppc#L17 ... */ |
| 40 | #define MODULE_NAME_LEN ( 64 - sizeof(unsigned long) ) |
| 41 | #endif |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 42 | #include <sys/mman.h> |
| 43 | #include "test.h" |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 44 | #include "safe_macros.h" |
| 45 | #include "linux_syscall_numbers.h" |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 46 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 47 | #define NULLMODNAME "" |
| 48 | #define BASEMODNAME "dummy" |
| 49 | #define LONGMODNAMECHAR 'm' /* Arbitrarily selected */ |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 50 | |
| 51 | char *TCID = "delete_module02"; |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 52 | |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 53 | static char nobody_uid[] = "nobody"; |
| 54 | struct passwd *ltpuser; |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 55 | static char longmodname[MODULE_NAME_LEN]; |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 56 | static char modname[20]; |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 57 | |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 58 | static void setup(void); |
| 59 | static void cleanup(void); |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 60 | static void setup1(void); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 61 | static void cleanup1(void); |
| 62 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 63 | static struct test_case_t { |
| 64 | char *modname; |
| 65 | int experrno; |
| 66 | char *desc; |
| 67 | void (*setup) (void); |
| 68 | void (*cleanup) (void); |
| 69 | } tdat[] = { |
| 70 | { modname, ENOENT, "nonexistent module", NULL, NULL}, |
| 71 | { NULLMODNAME, ENOENT, "null terminated module name", NULL, NULL}, |
| 72 | { (char *)-1, EFAULT, "module name outside program's " |
| 73 | "accessible address space", NULL, NULL}, |
| 74 | { longmodname, ENOENT, "long module name", NULL, NULL}, |
| 75 | { modname, EPERM, "non-superuser", setup1, cleanup1}, |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 76 | }; |
| 77 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 78 | int TST_TOTAL = ARRAY_SIZE(tdat); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 79 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 80 | int main(int argc, char **argv) |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 81 | { |
Cyril Hrubis | 89af32a | 2012-10-24 16:39:11 +0200 | [diff] [blame] | 82 | int lc; |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 83 | int i; |
| 84 | |
Cyril Hrubis | 0b9589f | 2014-05-27 17:40:33 +0200 | [diff] [blame] | 85 | const char *msg; |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 86 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 87 | msg = parse_opts(argc, argv, NULL, NULL); |
| 88 | if (msg != NULL) |
Garrett Cooper | 5374050 | 2010-12-16 00:04:01 -0800 | [diff] [blame] | 89 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 90 | |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 91 | setup(); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 92 | |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 93 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
Caspar Zhang | d59a659 | 2013-03-07 14:59:12 +0800 | [diff] [blame] | 94 | tst_count = 0; |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 95 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 96 | for (i = 0; i < TST_TOTAL; ++i) { |
| 97 | if (tdat[i].setup) |
| 98 | tdat[i].setup(); |
| 99 | |
| 100 | tst_resm(TINFO, "test %s", tdat[i].desc); |
| 101 | TEST(ltp_syscall(__NR_delete_module, |
| 102 | tdat[i].modname, 0)); |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 103 | |
| 104 | if (TEST_RETURN != -1) { |
| 105 | tst_resm(TFAIL, "delete_module() " |
| 106 | "succeeded unexpectedly"); |
| 107 | } else if (TEST_ERRNO == tdat[i].experrno) { |
| 108 | tst_resm(TPASS | TTERRNO, |
| 109 | "delete_module() failed as expected"); |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 110 | } else { |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 111 | tst_resm(TFAIL | TTERRNO, "delete_module() " |
| 112 | "failed unexpectedly; expected: " |
| 113 | "%d - %s", tdat[i].experrno, |
| 114 | strerror(tdat[i].experrno)); |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 115 | } |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 116 | if (tdat[i].cleanup) |
| 117 | tdat[i].cleanup(); |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 118 | } |
| 119 | } |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 120 | |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 121 | cleanup(); |
Garrett Cooper | 5374050 | 2010-12-16 00:04:01 -0800 | [diff] [blame] | 122 | tst_exit(); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 123 | } |
| 124 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 125 | static void setup1(void) |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 126 | { |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 127 | SAFE_SETEUID(cleanup, ltpuser->pw_uid); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 128 | } |
| 129 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 130 | static void cleanup1(void) |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 131 | { |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 132 | SAFE_SETEUID(cleanup, 0); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 133 | } |
| 134 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 135 | static void setup(void) |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 136 | { |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 137 | tst_sig(NOFORK, DEF_HANDLER, cleanup); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 138 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 139 | tst_require_root(NULL); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 140 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 141 | ltpuser = SAFE_GETPWNAM(cleanup, nobody_uid); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 142 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 143 | TEST_PAUSE; |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 144 | |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 145 | /* Initialize longmodname to LONGMODNAMECHAR character */ |
| 146 | memset(longmodname, LONGMODNAMECHAR, MODULE_NAME_LEN - 1); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 147 | |
yaberauneya | ef77253 | 2009-10-09 17:55:43 +0000 | [diff] [blame] | 148 | /* Get unique module name for each child process */ |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 149 | if (sprintf(modname, "%s_%d", BASEMODNAME, getpid()) <= 0) |
Garrett Cooper | 5374050 | 2010-12-16 00:04:01 -0800 | [diff] [blame] | 150 | tst_brkm(TBROK, NULL, "Failed to initialize module name"); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 151 | |
Xiaoguang Wang | c2a4cd9 | 2014-02-11 16:08:39 +0800 | [diff] [blame] | 152 | tdat[2].modname = SAFE_MMAP(cleanup, 0, 1, PROT_NONE, |
| 153 | MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 154 | } |
| 155 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 156 | void cleanup(void) |
plars | 5f30b5d | 2003-03-12 20:40:32 +0000 | [diff] [blame] | 157 | { |
Chris Dearman | ec6edca | 2012-10-17 19:54:01 -0700 | [diff] [blame] | 158 | } |