| /* |
| * 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. |
| * |
| */ |
| /********************************************************** |
| * |
| * TEST IDENTIFIER : create_module02 |
| * |
| * EXECUTED BY : root / superuser |
| * |
| * TEST TITLE : Checking error conditions for create_module(2) |
| * |
| * TEST CASE TOTAL : 8 |
| * |
| * AUTHOR : Madhu T L <madhu.tarikere@wipro.com> |
| * |
| * SIGNALS |
| * Uses SIGUSR1 to pause before test if option set. |
| * (See the parse_opts(3) man page). |
| * |
| * DESCRIPTION |
| * Verify that, |
| * 1. create_module(2) returns -1 and sets errno to EPERM, if effective |
| * user id of the caller is not superuser. |
| * 2. create_module(2) returns -1 and sets errno to EFAULT, if module |
| * name is outside the program's accessible address space. |
| * 3. create_module(2) returns -1 and sets errno to EFAULT, if module |
| * name parameter is NULL. |
| * 4. create_module(2) returns -1 and sets errno to EINVAL, if module |
| * name parameter is null terminated (zero length) string. |
| * 5. create_module(2) returns -1 and sets errno to EEXIST, if module |
| * entry with the same name already exists. |
| * 6. create_module(2) returns -1 and sets errno to EINVAL, if module |
| * size parameter is too small. |
| * 7. create_module(2) returns -1 and sets errno to ENAMETOOLONG, if |
| * module name parameter is too long. |
| * 8. create_module(2) returns -1 and sets errno to ENOMEM, if module |
| * size parameter is too large. |
| * |
| * Setup: |
| * Setup signal handling. |
| * Test caller is super user |
| * Check existances of "nobody" user id. |
| * Initialize long module name |
| * Set expected errnos for logging |
| * Pause for SIGUSR1 if option specified. |
| * Initialize modname for each child process |
| * |
| * Test: |
| * Loop if the proper options are given. |
| * Execute system call |
| * Check return code and error number, if matching, |
| * Issue PASS message |
| * Otherwise, |
| * Issue FAIL message |
| * |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * |
| * USAGE: <for command-line> |
| * create_module02 [-c n] [-e] [-f] [-h] [-i n] [-I x] [-p] [-P x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -e : Turn on errno logging. |
| * -f : Turn off functional testing |
| * -h : Show help screen |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -p : Pause for SIGUSR1 before starting |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| ****************************************************************/ |
| |
| #include <errno.h> |
| #include <pwd.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <limits.h> |
| #include <asm/atomic.h> |
| #include <linux/module.h> |
| #include "test.h" |
| |
| #ifndef PAGE_SIZE |
| #define PAGE_SIZE sysconf(_SC_PAGE_SIZE) |
| #endif |
| |
| #define MODSIZE 10000 /* Arbitrarily selected MODSIZE */ |
| #define NULLMODNAME "" |
| #define MAXMODSIZE 0xffffffffffffffff /* Max size of size_t */ |
| #define SMALLMODSIZE 1 /* Arbitrarily selected SMALLMODSIZE */ |
| #define BASEMODNAME "dummy" |
| #define LONGMODNAMECHAR 'm' /* Arbitrarily selected the alphabet */ |
| #define MODNAMEMAX (PAGE_SIZE + 1) |
| |
| struct test_case_t { /* test case structure */ |
| char *modname; |
| size_t size; |
| caddr_t retval; /* syscall return value */ |
| int experrno; /* expected errno */ |
| char *desc; |
| int (*setup) (void); /* Individual setup routine */ |
| void (*cleanup) (void); /* Individual cleanup routine */ |
| }; |
| |
| char *TCID = "create_module02"; |
| static char nobody_uid[] = "nobody"; |
| struct passwd *ltpuser; |
| static char longmodname[MODNAMEMAX]; |
| static int testno; |
| static char modname[20]; /* Name of the module */ |
| |
| static void setup(void); |
| static void cleanup(void); |
| static int setup1(void); |
| static void cleanup1(void); |
| static int setup2(void); |
| static void cleanup2(void); |
| |
| static struct test_case_t tdat[] = { |
| {modname, MODSIZE, (caddr_t) - 1, EPERM, |
| "non-superuser", setup1, cleanup1}, |
| {(char *)-1, MODSIZE, (caddr_t) - 1, EFAULT, |
| "module name outside the program's accessible address space", NULL, |
| NULL}, |
| {NULL, MODSIZE, (caddr_t) - 1, EFAULT, |
| "NULL module name", NULL, NULL}, |
| {NULLMODNAME, MODSIZE, (caddr_t) - 1, EINVAL, |
| "null terminated module name", NULL, NULL}, |
| {modname, MODSIZE, (caddr_t) - 1, EEXIST, |
| "already existing module", setup2, cleanup2}, |
| {modname, SMALLMODSIZE, (caddr_t) - 1, EINVAL, |
| "insufficient module size", NULL, NULL}, |
| {longmodname, MODSIZE, (caddr_t) - 1, ENAMETOOLONG, |
| "long module name", NULL, NULL}, |
| |
| /* |
| *This test case is giving segmentation fault on |
| * 2.4.* series, but works as expected with 2.5.* series of kernel. |
| */ |
| {modname, MAXMODSIZE, (caddr_t) - 1, ENOMEM, |
| "large module size", NULL, NULL}, |
| }; |
| |
| int TST_TOTAL = sizeof(tdat) / sizeof(tdat[0]); |
| |
| int main(int argc, char **argv) |
| { |
| int lc; |
| const char *msg; |
| |
| if ((msg = parse_opts(argc, argv, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| } |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| /* reset tst_count in case we are looping */ |
| tst_count = 0; |
| |
| for (testno = 0; testno < TST_TOTAL; ++testno) { |
| if ((tdat[testno].setup) && (tdat[testno].setup())) { |
| /* setup() failed, skip this test */ |
| continue; |
| } |
| |
| TEST(create_module(tdat[testno].modname, |
| tdat[testno].size)); |
| if ((TEST_RETURN == (int)tdat[testno].retval) && |
| (TEST_ERRNO == tdat[testno].experrno)) { |
| tst_resm(TPASS, "Expected results for %s, " |
| "errno: %d", |
| tdat[testno].desc, TEST_ERRNO); |
| } else { |
| tst_resm(TFAIL, "Unexpected results for %s ; " |
| "returned %d (expected %d), errno %d " |
| "(expected %d)", tdat[testno].desc, |
| TEST_RETURN, tdat[testno].retval, |
| TEST_ERRNO, tdat[testno].experrno); |
| } |
| if (tdat[testno].cleanup) { |
| tdat[testno].cleanup(); |
| } |
| } |
| } |
| cleanup(); |
| tst_exit(); |
| } |
| |
| int setup1(void) |
| { |
| /* Change effective user id to nodody */ |
| if (seteuid(ltpuser->pw_uid) == -1) { |
| tst_resm(TBROK, "seteuid failed to set the effective" |
| " uid to %d", ltpuser->pw_uid); |
| return 1; |
| } |
| return 0; |
| } |
| |
| void cleanup1(void) |
| { |
| /* Change effective user id to root */ |
| if (seteuid(0) == -1) { |
| tst_brkm(TBROK, NULL, "seteuid failed to set the effective" |
| " uid to root"); |
| } |
| } |
| |
| int setup2(void) |
| { |
| /* Create a loadable module entry */ |
| if (create_module(modname, MODSIZE) == -1) { |
| tst_resm(TBROK, "Failed to create module entry" |
| " for %s", modname); |
| return 1; |
| } |
| return 0; |
| } |
| |
| void cleanup2(void) |
| { |
| /* Remove loadable module entry */ |
| if (delete_module(modname) == -1) { |
| tst_brkm(TBROK, NULL, "Failed to delete module entry" |
| " for %s", modname); |
| } |
| } |
| |
| /* |
| * setup() |
| * performs all ONE TIME setup for this test |
| */ |
| void setup(void) |
| { |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| tst_require_root(NULL); |
| |
| if (tst_kvercmp(2, 5, 48) >= 0) |
| tst_brkm(TCONF, NULL, "This test will not work on " |
| "kernels after 2.5.48"); |
| |
| /* Check for nobody_uid user id */ |
| if ((ltpuser = getpwnam(nobody_uid)) == NULL) { |
| tst_brkm(TBROK, NULL, "Required user %s doesn't exists", |
| nobody_uid); |
| } |
| |
| /* Initialize longmodname to LONGMODNAMECHAR character */ |
| memset(longmodname, LONGMODNAMECHAR, MODNAMEMAX - 1); |
| |
| /* Pause if that option was specified |
| * TEST_PAUSE contains the code to fork the test with the -c option. |
| */ |
| TEST_PAUSE; |
| |
| /* Get unique module name for each child process */ |
| if (sprintf(modname, "%s_%d", BASEMODNAME, getpid()) == -1) { |
| tst_brkm(TBROK, NULL, "Failed to initialize module name"); |
| } |
| } |
| |
| /* |
| * cleanup() |
| * performs all ONE TIME cleanup for this test at |
| * completion or premature exit |
| */ |
| void cleanup(void) |
| { |
| } |