| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * Name: vfork01 |
| * |
| * Test Description: |
| * Fork a process using vfork() and verify that, the attribute values like |
| * euid, ruid, suid, egid, rgid, sgid, umask, inode and device number of |
| * root and current working directories are same as that of the parent |
| * process. |
| * $ |
| * Expected Result: |
| * The attribute values like euid, ruid, suid, egid, rgid, sgid, umask, inode |
| * and device number of root and current working directory of the parent and |
| * child processes should be equal. |
| * |
| * Algorithm: |
| * Setup: |
| * Setup signal handling. |
| * Pause for SIGUSR1 if option specified. |
| * |
| * Test: |
| * Loop if the proper options are given. |
| * Execute system call |
| * Check return code, if system call failed (return=-1) |
| * Log the errno and Issue a FAIL message. |
| * Otherwise, |
| * Verify the Functionality of system call |
| * if successful, |
| * Issue Functionality-Pass message. |
| * Otherwise, |
| * Issue Functionality-Fail message. |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * |
| * Usage: <for command-line> |
| * vfork01 [-c n] [-e] [-f] [-i n] [-I x] [-p x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -e : Turn on errno logging. |
| * -f : Turn off functionality Testing. |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| * History |
| * 07/2001 John George |
| * -Ported |
| * |
| * Restrictions: |
| * None. |
| * |
| */ |
| |
| #define _GNU_SOURCE 1 |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include <sys/stat.h> |
| #include <sys/wait.h> |
| |
| #include "test.h" |
| |
| char *TCID = "vfork01"; |
| int TST_TOTAL = 1; |
| |
| /* Variables to hold parent/child eff/real/saved uid/gid values */ |
| uid_t Peuid, Ceuid, Csuid, Psuid, Pruid, Cruid; |
| gid_t Pegid, Cegid, Psgid, Csgid, Prgid, Crgid; |
| mode_t Pumask, Cumask; |
| |
| char *Pcwd, *Ccwd; /* |
| * pathname of working directory of |
| * child/parent process. |
| */ |
| /* stat structure to hold directory/inode information for parent/child */ |
| struct stat StatPbuf; |
| struct stat StatCbuf; |
| struct stat Stat_cwd_Pbuf; |
| struct stat Stat_cwd_Cbuf; |
| |
| void setup(); /* Main setup function of test */ |
| void cleanup(); /* cleanup function for the test */ |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| const char *msg; |
| pid_t cpid; /* process id of the child process */ |
| int exit_status; /* exit status of child process */ |
| |
| msg = parse_opts(ac, av, 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; |
| |
| /* |
| * Call vfork(2) to create a child process without |
| * fully copying the address space of parent. |
| */ |
| TEST(vfork()); |
| |
| if ((cpid = TEST_RETURN) == -1) { |
| tst_resm(TFAIL, "vfork() Failed, errno=%d : %s", |
| TEST_ERRNO, strerror(TEST_ERRNO)); |
| } else if (cpid == 0) { /* Child process */ |
| /* |
| * Get the euid, ruid, egid, rgid, umask value |
| * and the current working directory of the |
| * child process |
| */ |
| if (getresuid(&Cruid, &Ceuid, &Csuid) < 0) { |
| tst_resm(TFAIL, "getresuid() fails to " |
| "get real/eff./saved uid of " |
| "child process"); |
| _exit(1); |
| } |
| |
| if (getresgid(&Crgid, &Cegid, &Csgid) < 0) { |
| tst_resm(TFAIL, "getresgid() fails to " |
| "get real/eff./saved gid of " |
| "child process"); |
| _exit(1); |
| } |
| |
| /* |
| * Get the file mode creation mask value of |
| * child process by setting value zero and |
| * restore the previous mask value. |
| */ |
| Cumask = umask(0); |
| |
| /* |
| * Restore the process mask of child to |
| * previous value. |
| */ |
| umask(Cumask); |
| |
| /* |
| * Get the pathname of current working |
| * directory for the child process. |
| */ |
| if ((Ccwd = (char *)getcwd(NULL, |
| BUFSIZ)) == NULL) { |
| tst_resm(TFAIL, "getcwd failed for the " |
| "child process"); |
| _exit(1); |
| } |
| |
| /* |
| * Get the device number and the inode |
| * number of "/" directory for the child |
| * process. |
| */ |
| if (stat("/", &StatCbuf) < 0) { |
| tst_resm(TFAIL, "stat(2) failed to get " |
| "info. of'/' in the child " |
| "process"); |
| _exit(1); |
| } |
| |
| /* |
| * Get the device/inode number of "." |
| * (working directory) for the child process. |
| */ |
| if (stat(Ccwd, &Stat_cwd_Cbuf) < 0) { |
| tst_resm(TFAIL, "stat(2) failed to get " |
| "info. of working irectory in " |
| "the child"); |
| _exit(1); |
| } |
| |
| /* Now, do the actual comparision */ |
| if (Peuid != Ceuid || Pegid != Cegid || |
| Psuid != Csuid || Psgid != Csgid || |
| Pruid != Cruid || Prgid != Crgid || |
| Pumask != Cumask) { |
| tst_resm(TFAIL, "Attribute values of " |
| "parent and child don't match"); |
| _exit(1); |
| } else { |
| tst_resm(TINFO, "Attribute values of " |
| "parent and child match"); |
| } |
| |
| /* Check for the same working directories */ |
| if (strcmp(Pcwd, Ccwd) != 0) { |
| tst_resm(TFAIL, "Working directories " |
| "of parent and child don't " |
| "match"); |
| _exit(1); |
| } else { |
| tst_resm(TINFO, "Working directories " |
| "of parent and child match"); |
| } |
| |
| /* |
| * Check for the same device/inode number of |
| * '/' directory. |
| */ |
| if ((StatPbuf.st_ino != StatCbuf.st_ino) || |
| (StatPbuf.st_dev != StatCbuf.st_dev)) { |
| tst_resm(TFAIL, "Device/inode number " |
| "of parent and childs '/' " |
| " don't match"); |
| _exit(1); |
| } else { |
| tst_resm(TINFO, "Device/inode number " |
| "of parent and childs '/' " |
| "match"); |
| } |
| |
| /* |
| * Check for the same device and inode number |
| * of "." (current working directory. |
| */ |
| if ((Stat_cwd_Pbuf.st_ino != |
| Stat_cwd_Cbuf.st_ino) || |
| (Stat_cwd_Pbuf.st_dev != |
| Stat_cwd_Cbuf.st_dev)) { |
| tst_resm(TFAIL, "Device/inode number " |
| "of parent and childs '.' " |
| "don't match"); |
| _exit(1); |
| } else { |
| tst_resm(TINFO, "Device/inode number " |
| "of parent and childs '.' " |
| "don't match"); |
| } |
| |
| /* |
| * Exit with normal exit code if everything |
| * fine |
| */ |
| _exit(0); |
| |
| } else { /* parent process */ |
| /* |
| * Let the parent process wait till child completes |
| * its execution. |
| */ |
| wait(&exit_status); |
| |
| /* Check for the exit status of child process */ |
| if (WEXITSTATUS(exit_status) == 0) { |
| tst_resm(TPASS, "Call of vfork() successful"); |
| } else if (WEXITSTATUS(exit_status) == 1) { |
| tst_resm(TFAIL, |
| "Child process exited abnormally"); |
| } |
| } |
| tst_count++; /* incr. TEST_LOOP counter */ |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| /* |
| * void |
| * setup() - performs all ONE TIME setup for this test. |
| * This function gets real/effective/saved uid/gid, umask, the device/inode |
| * number of '/' and current working directory for the parent process. |
| */ |
| void setup(void) |
| { |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| /* |
| * Get the euid, ruid, egid, rgid, umask value |
| * and the current working directory of the parent process. |
| */ |
| if (getresuid(&Pruid, &Peuid, &Psuid) < 0) { |
| tst_brkm(TFAIL, cleanup, "getresuid() fails to get " |
| "real/eff./saved uid of parent"); |
| } |
| |
| if (getresgid(&Prgid, &Pegid, &Psgid) < 0) { |
| tst_brkm(TFAIL, cleanup, "getresgid() fails to get " |
| "real/eff./saved gid of parent"); |
| } |
| |
| /* Get the process file mode creation mask by setting value 0 */ |
| Pumask = umask(0); |
| umask(Pumask); /* |
| * Restore the mask value of the |
| * process. |
| */ |
| /* |
| * Get the pathname of current working directory of the parent |
| * process. |
| */ |
| if ((Pcwd = (char *)getcwd(NULL, BUFSIZ)) == NULL) { |
| tst_brkm(TFAIL, cleanup, |
| "getcwd failed for the parent process"); |
| } |
| |
| /* |
| * Get the device and inode number of root directory for the |
| * parent process. |
| */ |
| if (stat("/", &StatPbuf) == -1) { |
| tst_brkm(TFAIL, cleanup, "stat(2) failed to get info. of '/' " |
| "in parent process"); |
| } |
| |
| /* |
| * Get the device number and the inode number of "." (current- |
| * working directory) for the parent process. |
| */ |
| if (stat(Pcwd, &Stat_cwd_Pbuf) < 0) { |
| tst_brkm(TFAIL, cleanup, "stat(2) failed to get info. of " |
| "working directory in parent process"); |
| } |
| } |
| |
| /* |
| * void |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup(void) |
| { |
| |
| } |