| /* |
| * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| */ |
| |
| /* |
| * AUTHOR: Madhu T L <madhu.tarikere@wipro.com> |
| * |
| * DESCRIPTION |
| * Verify that, |
| * 1. delete_module(2) returns -1 and sets errno to ENOENT for nonexistent |
| * module entry. |
| * 2. delete_module(2) returns -1 and sets errno to EFAULT, if |
| * module name parameter is outside program's accessible address space. |
| * 3. delete_module(2) returns -1 and sets errno to EPERM, if effective |
| * user id of the caller is not superuser. |
| */ |
| |
| #include <errno.h> |
| #include <pwd.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <limits.h> |
| #if HAVE_LINUX_MODULE_H |
| #include <linux/module.h> |
| #else |
| /* As per http://tomoyo.sourceforge.jp/cgi-bin/lxr/source/include/linux/moduleparam.h?a=ppc#L17 ... */ |
| #define MODULE_NAME_LEN ( 64 - sizeof(unsigned long) ) |
| #endif |
| #include <sys/mman.h> |
| #include "test.h" |
| #include "safe_macros.h" |
| #include "linux_syscall_numbers.h" |
| |
| #define NULLMODNAME "" |
| #define BASEMODNAME "dummy" |
| #define LONGMODNAMECHAR 'm' /* Arbitrarily selected */ |
| |
| char *TCID = "delete_module02"; |
| |
| static char nobody_uid[] = "nobody"; |
| struct passwd *ltpuser; |
| static char longmodname[MODULE_NAME_LEN]; |
| static char modname[20]; |
| |
| static void setup(void); |
| static void cleanup(void); |
| static void setup1(void); |
| static void cleanup1(void); |
| |
| static struct test_case_t { |
| char *modname; |
| int experrno; |
| char *desc; |
| void (*setup) (void); |
| void (*cleanup) (void); |
| } tdat[] = { |
| { modname, ENOENT, "nonexistent module", NULL, NULL}, |
| { NULLMODNAME, ENOENT, "null terminated module name", NULL, NULL}, |
| { (char *)-1, EFAULT, "module name outside program's " |
| "accessible address space", NULL, NULL}, |
| { longmodname, ENOENT, "long module name", NULL, NULL}, |
| { modname, EPERM, "non-superuser", setup1, cleanup1}, |
| }; |
| |
| int TST_TOTAL = ARRAY_SIZE(tdat); |
| |
| int main(int argc, char **argv) |
| { |
| int lc; |
| int i; |
| |
| const char *msg; |
| |
| msg = parse_opts(argc, argv, NULL, NULL); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| |
| for (i = 0; i < TST_TOTAL; ++i) { |
| if (tdat[i].setup) |
| tdat[i].setup(); |
| |
| tst_resm(TINFO, "test %s", tdat[i].desc); |
| TEST(ltp_syscall(__NR_delete_module, |
| tdat[i].modname, 0)); |
| |
| if (TEST_RETURN != -1) { |
| tst_resm(TFAIL, "delete_module() " |
| "succeeded unexpectedly"); |
| } else if (TEST_ERRNO == tdat[i].experrno) { |
| tst_resm(TPASS | TTERRNO, |
| "delete_module() failed as expected"); |
| } else { |
| tst_resm(TFAIL | TTERRNO, "delete_module() " |
| "failed unexpectedly; expected: " |
| "%d - %s", tdat[i].experrno, |
| strerror(tdat[i].experrno)); |
| } |
| if (tdat[i].cleanup) |
| tdat[i].cleanup(); |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup1(void) |
| { |
| SAFE_SETEUID(cleanup, ltpuser->pw_uid); |
| } |
| |
| static void cleanup1(void) |
| { |
| SAFE_SETEUID(cleanup, 0); |
| } |
| |
| static void setup(void) |
| { |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| tst_require_root(NULL); |
| |
| ltpuser = SAFE_GETPWNAM(cleanup, nobody_uid); |
| |
| TEST_PAUSE; |
| |
| /* Initialize longmodname to LONGMODNAMECHAR character */ |
| memset(longmodname, LONGMODNAMECHAR, MODULE_NAME_LEN - 1); |
| |
| /* Get unique module name for each child process */ |
| if (sprintf(modname, "%s_%d", BASEMODNAME, getpid()) <= 0) |
| tst_brkm(TBROK, NULL, "Failed to initialize module name"); |
| |
| tdat[2].modname = SAFE_MMAP(cleanup, 0, 1, PROT_NONE, |
| MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); |
| } |
| |
| void cleanup(void) |
| { |
| } |