mirror of
https://gitlab.com/apparmor/apparmor.git
synced 2025-03-06 09:21:00 +01:00
129 lines
2.5 KiB
C
129 lines
2.5 KiB
C
/* $Id$ */
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/*
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* Copyright (C) 2002-2005 Novell/SUSE
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2 of the
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* License.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <fcntl.h>
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#include <linux/unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include "changehat.h"
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const char *data="hello world";
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int do_read (int fd)
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{
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int rc;
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char buf[128];
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if (fd < 0) {
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fprintf(stderr, "FAIL: read failed - no descriptor passed\n");
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return 1;
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}
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rc=read(fd, buf, sizeof(buf));
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if (rc != strlen(data)){
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fprintf(stderr, "FAIL: read failed - %s\n",
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strerror(errno));
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return 1;
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}
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if (memcmp(buf, data, strlen(data)) != 0){
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fprintf(stderr, "FAIL: comparison failed - %s\n",
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strerror(errno));
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return 1;
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}
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close(fd);
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return 0;
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}
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int do_write (int fd)
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{
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int rc;
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rc=write(fd, data, strlen(data));
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if (rc != strlen(data)){
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fprintf(stderr, "FAIL: write failed - %s\n",
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strerror(errno));
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return 1;
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}
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close(fd);
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return 0;
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}
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int main(int argc, char *argv[])
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{
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int rc;
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pid_t pid;
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int waitstatus;
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int filedes[2];
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int read_error = 0;
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if (argc != 2){
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fprintf(stderr, "usage: %s hatname\n",
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argv[0]);
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return 1;
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}
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/* change hat if hatname != nochange */
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if (strcmp(argv[1], "nochange") != 0){
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rc = change_hat(argv[1], SD_ID_MAGIC+1);
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if (rc == -1){
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fprintf(stderr, "FAIL: changehat %s failed - %s\n",
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argv[1], strerror(errno));
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exit(1);
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}
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}
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if (pipe(filedes) == -1){
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fprintf(stderr, "FAIL: pipe() failed - %s\n",
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strerror(errno));
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exit(1);
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}
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pid = fork();
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if (pid == -1) {
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fprintf(stderr, "FAIL: fork failed - %s\n",
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strerror(errno));
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exit(1);
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} else if (pid != 0) {
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/* parent */
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read_error = do_read(filedes[0]);
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rc = wait(&waitstatus);
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if (rc == -1){
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fprintf(stderr, "FAIL: wait failed - %s\n",
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strerror(errno));
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exit(1);
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}
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} else {
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/* child */
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exit(do_write(filedes[1]));
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}
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if ((WIFEXITED(waitstatus) != 0) && (WEXITSTATUS(waitstatus) == 0)
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&& read_error == 0) {
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printf("PASS\n");
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} else {
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return (WEXITSTATUS(waitstatus) & read_error);
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}
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return 0;
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}
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