rtems/testsuites/fstests/support/fstest_support.c

/*
 *  COPYRIGHT (c) 1989-2011.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.com/license/LICENSE.
 *
 *  $Id Exp $
 */

#include <stdio.h>  
#include <errno.h>  
#include <fcntl.h>  
#include <string.h>  
#include <unistd.h>  
#include <sys/stat.h>  
#include <sys/types.h>  

#include "rtems.h"

#include "fstest_support.h"
#include "fs_config.h"

#include "fstest.h"

#define TEMP_DIR "waterbuffalo"  


/* Break out of a chroot() environment in C */  
void break_out_of_chroot(void)
{

  int dir_fd;       /* File descriptor to directory */  
  struct stat sbuf; /* The stat() buffer */  
  chdir("/");

  if (stat(TEMP_DIR,&sbuf)<0) {  
    if (errno==ENOENT) {  
      if (mkdir(TEMP_DIR,0755)<0) {  
        fprintf(stderr,"Failed to create %s - %s\n", TEMP_DIR,  
            strerror(errno));  
        exit(1);  
      }  
    } else {  
      fprintf(stderr,"Failed to stat %s - %s\n", TEMP_DIR,  
          strerror(errno));  
      exit(1);  
    }  
  } else if (!S_ISDIR(sbuf.st_mode)) {  
    fprintf(stderr,"Error - %s is not a directory!\n",TEMP_DIR);  
    exit(1);  
  }  

  if ((dir_fd=open(".",O_RDONLY))<0) {  
    fprintf(stderr,"Failed to open \".\" for reading - %s\n", strerror(errno));  
    exit(1);  
  }  

  if (chroot(TEMP_DIR)<0) {  
    fprintf(stderr,"Failed to chroot to %s - %s\n",TEMP_DIR,  
        strerror(errno));  
    exit(1);  
  }  

  if (fchdir(dir_fd)<0) {  
    fprintf(stderr,"Failed to fchdir - %s\n",  
        strerror(errno));  
    exit(1);  
  }  
  close(dir_fd);  
  chdir("..");  
  chroot(".");  

}


/*
 *  Main entry point of every filesystem test
 */

rtems_task Init(
    rtems_task_argument ignored)
{
  int rc=0;
  puts( "\n\n*** FILE SYSTEM TEST ( " FILESYSTEM " ) ***" );

  puts( "Initializing filesystem " FILESYSTEM );
  test_initialize_filesystem();
  rc=chdir(BASE_FOR_TEST);
  rtems_test_assert(rc==0);

  rc=chroot(BASE_FOR_TEST);
  rtems_test_assert(rc==0);

  test();

  break_out_of_chroot();
  chdir("/");

  puts( "\n\nShutting down filesystem " FILESYSTEM );
  test_shutdown_filesystem();

  puts( "*** END OF FILE SYSTEM TEST ( " FILESYSTEM " ) ***" );
  rtems_test_exit(0);

}