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/*
 *  This test exercises stat() via fstat() and generates as many of the
 *  path evaluation cases as possible.
 *
 *  COPYRIGHT (c) 1989-1999.
 *  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.OARcorp.com/rtems/license.html.
 *
 *  $Id: test.c,v 1.2 2001-09-27 12:02:26 chris Exp $
 */
 
#include <tmacros.h>
#include <assert.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <rtems.h>
#include <rtems/libio.h>
 
#define MAXSYMLINK 5   /* There needs to be a better way of getting this. */
 
 
/*
 *  List of files which should exist.
 */
 
char *Files[] = {
  "////dir1/\\//file1\\\\//",
  "/dir1/file2",
  "/dir1/file3",
  "/dir1/file4",
  "/dir1/dir1/file1",
  "../../..//dir1/./././dir1/ file1",
  "main.c",
  0
};
 
/*
 *  List of directories which should exist.
 */
 
char *Directories[] = {
  "/dir1",
  "/dir2",
  "/dir3",
  "/dir4",
  "/dir1/dir1",
  "/./././dir1/ dir1",
  "/./././links",  
  "///dir1/dir1/../../dir1/../symlinks/////",
  0
};
 
char *Links_to_Dirs[]= {
  "dir1/dir1/../../links/dir1",
  "links/dir2",
  "links/dir3",
  "links/dir4",
  "links/dir1_dir1",
  "links/dir1_ dir1",
  "links/../links/../links/links",
  0
};
 
char *Links_to_Files[]= {
  "links/dir1_file1",
  "links/dir1_file2",
  "links/dir1_file3",
  "links/dir1_file4",
  "links/dir1_dir1_f1",
  "links/dir1_dir1 f1",
  0
};
 
char *Links_to_dirlinks[]= {
  "links/links/links/links_dir1",
  "links//links_dir2",
  "links//links_dir3",
  "links//links_dir4",
  "links//links_dir1_d1",
  "links//links_dir1 d1",
  "links//links_links",
  0
};
 
char *Links_to_filelinks[]= {
  "links///links_d1_file1",
  "links///links_d1_file2",
  "links///links_d1_file3",
  "links///links_d1_file4",
  "links///links_d1_d1_f1",
  "links///links_r1_d1 f1",
  0
};
 
char *SymLinks[]= {
  "/symlinks/a_file_symlink",
  "/symlinks/a_dir_symlink",
  "/symlinks/a_link_symlink",
  "../symlinks/no_file",
  "/symlinks/a_dir_symlink/a_file_symlink",
  0
};
 
/*
 *  List of absolute paths to stat.
 */
 
char *Good_absolute_paths[] = {
  "/dev",
  "////dir1/\\//file1\\\\//",
  "/dir1/\\\\/file2",
  "/dir1/file3/////\\\\\\",
  "/dir1/file4",
  "/dir1/dir1/file1",
  "/dir1/dir1/ file1",
  "/dir1",
  "/dir2//////\\",
  "/dir3",
  "/dir4",
  "/dir1/dir1",
  "/dir1/ dir1///\\\\",
  "/\\/\\/\\/\\/\\/\\/links\\/\\/\\/\\/\\/\\",
  0
};
 
 
char *Bad_paths[] = {
  "/links/ENAMETOOLONG__________________________",
  "/dir1/file4/NOTADIR",
  "/dir1/dir1/EACCES__",
  0
};
 
/*
 *  List of relative paths to stat.
 */
 
char *Good_relative_paths[] = {
  "dev",
  "dir1/\\//file1\\\\//",
  "dir1/\\\\/file2",
  "dir1/file3/////\\\\\\",
  "dir1/file4",
  "dir1/dir1/file1",
  "dir1/dir1/ file1",
  "dir1",
  "dir2//////\\",
  "dir3",
  "dir4",
  "dir1/dir1",
  "dir1/ dir1///\\\\",
  "main.c",
  0
};
 
/*
 *  Do a stat on a single file and report the status.
 */
 
void stat_a_file(
  const char *file
)
{
  int         status;
  struct stat statbuf;
  int         major1;
  int         minor1;
  int         major2;
  int         minor2;
 
 
  assert( file );
 
  printf( "stat( %s ) returned ", file );
  fflush( stdout );
 
  status = stat( file, &statbuf );
 
  if ( status == -1 ) {
    printf( ": %s\n", strerror( errno ) );
  } else {
 
    rtems_filesystem_split_dev_t( statbuf.st_dev, major1, minor1 );
    rtems_filesystem_split_dev_t( statbuf.st_rdev, major2, minor2 );
 
 
    printf("\n\tst_dev     (0x%x:0x%x)\n", major1, minor1 );
    printf(  "...st_ino     %x\n", (int) statbuf.st_ino );
    printf(  "...st_mode    %o\n", statbuf.st_mode );
    printf(  "...st_nlink   %x\n", statbuf.st_nlink );
    printf(  "...st_uid     %d\n", statbuf.st_uid );
    printf(  "...st_gid     %d\n", statbuf.st_gid );
    printf(  "...st_rdev    (0x%x:0x%x)\n", major2, minor2 );
    printf(  "...st_size    %d\n",(unsigned int) statbuf.st_size );
    printf(  "...st_atime   %s", ctime( &statbuf.st_atime ) );
    printf(  "...st_mtime   %s", ctime( &statbuf.st_mtime ) );
    printf(  "...st_ctime   %s", ctime( &statbuf.st_ctime ) );
#if defined(__svr4__) && !defined(__PPC__) && !defined(__sun__)
    printf(  "...st_blksize %x\n", statbuf.st_blksize );
    printf(  "...st_blocks  %x\n", statbuf.st_blocks );
#endif
 
  }
}
 
/*
 *  stat() multiple files at a time
 */
 
void stat_multiple_files(
  char **files
)
{
  int    i;
 
  i = 0;
  while ( files[i] ) {
    stat_a_file( files[i] );
    i++;
  }
}
 
/*
 *  chown() multiple files at a time
 */
void chown_multiple_files(
  char **files
)
{
  int    i;
  uid_t  st_uid;
  gid_t  st_gid;
 
  st_uid = geteuid();
  st_gid = getegid();
 
  i = 0;
  while ( files[i] ) {
    printf("Change group of %s\n", files[i]);
    chown( files[i], st_uid, (st_gid+1) );
    stat_a_file( files[i] );
 
    printf("Change owner of %s\n", files[i]);
    chown( files[i], (st_uid+1), st_gid );
    stat_a_file( files[i] );
    i++;
  }
 
}
 
 
 
/*
 *  mknod() multiple files at a time
 */
 
void make_multiple_files(
  char **files
)
{
  int    i;
  int    status;
 
  i = 0;
  while ( files[i] ) {
    printf( "Making file %s\n", files[i] );
    status = mknod( files[i], ( S_IFREG | S_IROTH|S_IWOTH ), 0LL );
    assert( !status );
    i++;
  }
  puts( "" );
}
 
void make_multiple_bad_files(
  char **files
)
{
  int    i;
  int    status;
 
  i = 0;
  while ( files[i] ) {
    printf( "Making file %s ", files[i] );
    status = mknod( files[i], ( S_IFREG | S_IROTH|S_IWOTH ), 0LL );
    assert( status );
    printf( ": %s\n", strerror( errno ) );
    i++;
  }
  puts( "" );
}
 
void make_multiple_links(
  char **existing,
  char **new
)
{
  int    i;
  int    status;
 
  i = 0;
  while ( new[i] && existing[i] ) {
    printf( "Making file %s\n", new[i] );
    status = link( existing[i], new[i] );
    assert( !status );
    i++;
  }
  puts( "" );
 
  status = link( "fred", "bob" );
  assert( status == -1 );
 
  status = link( existing[1], "doug/bob" );
  assert( status == -1 );
}
 
 
void make_too_many_links()
{
  int    i;
  int    status;
  char   name [20];
 
  status = mkdir("/dummy", S_IRWXU );
  assert( status == 0 );
 
  for (i=1; i<= LINK_MAX; i++) {
 
    sprintf(name,"/LinkName%d",i);
    printf( "Making file %s\n", name );
    status = link("/dummy" , name );
    if( i < LINK_MAX )
       assert( !status );
    else
       assert( status == -1 );
 
  }
}
 
 
void make_a_symlink(
  char *existing,
  char *new
)
{
  int    status;
  char   buf[100];
  int    len;
 
  memset( buf, 0, 100 );
 
  printf( "Making file %s\n", new );
  status = symlink( existing, new );
  assert( !status );
 
  printf( "Verify with readlink\n");
  status = readlink( new, buf, 100 );
  len = strlen( existing );
  assert ( status == len );
 
  status = readlink( new, buf, 3 );
  len = strlen( existing );
  if (len < 3 )
    assert( status == len );
  else
    assert( status == 3 );
 
  status = strcmp( existing, buf );
  assert( !status );
}
 
void make_multiple_symlinks()
{
 int  status;
 
 make_a_symlink( Files[0],             SymLinks[0] );
 make_a_symlink( Directories[0],       SymLinks[1] );
 make_a_symlink( Links_to_dirlinks[0], SymLinks[2] );
 make_a_symlink( "No_File",            SymLinks[3] );
 make_a_symlink( SymLinks[1],          SymLinks[4] );
 make_a_symlink( "//links",            "/symlinks/links"  );
 
 stat_a_file( SymLinks[0] );
 stat_a_file( SymLinks[1] );
 stat_a_file( SymLinks[2] );
 stat_a_file( SymLinks[3] );
 stat_a_file( SymLinks[4] );
 
 status = symlink(  "//links", "bob/frank" );
 assert (status == -1);
 
}
/*
void make_too_many_symlinks()
{
  int  i, status;
  char name1[8];
 
  for (i=1; i <= MAXSYMLINK; i++) {
    sprintf( name1, "SymLink%d", i );
    status = symlink( "/dummy", name1 );
    if( i < MAXSYMLINK )
       assert( !status );
    else
       assert( status == -1 );
  }
}
*/
void make_many_symlinks(
  char  *real_file,
  int    link_count
)
{
  int  i;
  char name1[5];
  char name2[5];
  char *link_file;
 
  link_file = real_file;
  for (i=1; i < link_count; i++) {
    sprintf( name1, "%d", i );
    make_a_symlink( link_file, name1 );
    strcpy( name2, name1 );
    link_file = name2;
  }
 
  for (i=1; i < link_count; i++) {
    sprintf( name1, "%d", i );
    stat_a_file( name1 );
  }
 
}
 
/*
 *  mkdir() multiple directories at a time
 */
 
void make_multiple_directories(
  char **files
) 
{
  int    i;
  int    status;
 
  i = 0; 
  while ( files[i] ) {
    printf( "Making directory %s\n", files[i] );
    status = mkdir( files[i], S_IRWXU );
    assert( !status );
    i++;
  }
  puts( "" );
}  
 
/*
 * Cause faults.
 */
 
 
void Cause_faults()
{
  int                                   fd;
  int                                   status;
  char                                  longer_name[100];
  rtems_filesystem_mount_table_entry_t *mt_entry;
 
  /*
   * Verify chmod with an invalid type.
   */
 
  printf("\n\nPass an invalid mode to chmod should fail with EPERM \n" );
  status = chmod( Files[0], S_IFREG );
  assert( status == -1 ); 
  assert( errno == EPERM );
 
  /*
   * Try to chdir to a file.
   */
 
  printf("chdir to a file should fail with ENOTDIR\n");
  status = chdir( Files[0] );
  assert( status == -1 );
  assert( errno == ENOTDIR );
 
  /*
   * Change mode to read/write on a directory.
   * Verify directory works properly.
   */
 
  printf("Verify RWX permission on %s via access\n", Directories[0]);
  status = access( Directories[0], ( R_OK | W_OK | X_OK )  );
  assert( status == 0 );
 
  printf( "chmod of %s to Read/Write\n", Directories[0] );
  status = chmod( Directories[0], (S_IXGRP | S_IXOTH) );
  assert( status == 0 );
 
  printf( "chmod fred should fail with ENOENT\n" );
  status = chmod( "fred", (S_IXGRP | S_IXOTH) );
  assert( status == -1 );
  assert( errno == ENOENT );
 
  strcpy(longer_name, Directories[0] );
  strcat(longer_name, "/BADNAME" );
  printf( "Create under %s should fail with EACCES\n", Directories[0] );
  status = mkdir( longer_name , S_IRWXU );
  assert( status == -1 );
  assert( errno == EACCES );
 
  printf("chdir to %s should fail with EACCES\n", Directories[4] );
  status = chdir( Directories[4] );
  assert( status == -1 );
  assert( errno == EACCES );
 
  /* 
   * Check stat with a NULL buffer.
   */
 
  printf("Stat with a NULL buffer should fail with EFAULT\n");
  status = stat( Directories[0], NULL );
  assert( status == -1 );
  assert( errno == EFAULT );
 
  /*
   * Set current to a directory with no owner permissions.
   * Verify it works properly.
   */
 
  printf( "\n\nchmod of %s to Read/Write\n", Directories[0] );
  status = chmod( Directories[0], (S_IXGRP | S_IXOTH) );
  assert( status == 0 );
 
  printf("mkdir %s should fail with EACCESS\n", longer_name );
  status = mkdir( longer_name , S_IRWXU );
  assert( status == -1 );
  assert( errno == EACCES );
 
  printf("\n%s Should exist ( access )\n",Directories[0] );
  status = access( Directories[0], F_OK );
  assert( status == 0 );
  printf("\n%s Should have read  permission( access )\n",Directories[0] );
  status = access( Directories[0], R_OK );
  assert( status != 0 );
  printf("\n%s Should have write permission( access )\n",Directories[0] );
  status = access( Directories[0], W_OK );
  assert( status != 0 );
  printf("\n%s Should not have execute permission( access )\n",Directories[0] );
  status = access( Directories[0], X_OK );
  assert( status != 0 );
 
  printf("\nRestore %s to RWX\n",Directories[0] );
  status = chmod( Directories[0], S_IRWXU );
  assert( status == 0 );
 
  printf("chdir to / \n");
  status = chdir( "/" );
  assert( status == 0 );
 
  /*
   * Remove one of the directories.
   * Verify links to the removed directory still work.
   */
 
  printf( "Remove %s\n", Directories[5] );
  status = rmdir( Directories[5] );
  assert( status == 0 );
 
  stat_a_file( Directories[5] );
  status = access( Directories[5], F_OK );
  assert( status != 0 );
 
  stat_a_file( Links_to_Dirs[5] );
  status = readlink( Links_to_Dirs[5], longer_name, 3 );
  assert( status == -1 );
  assert( errno == EINVAL );
 
  stat_a_file( Links_to_dirlinks[5] );
  printf("Chdir to %s\n", Links_to_Dirs[5] );
  status = chdir( Links_to_Dirs[5] );
  assert( status == 0 );
 
  /*
   * Verify we cannot move up from a node with no parent node.
   */
 
  printf("Chdir to .. should fail with ENOENT\n" );
  status = chdir( ".." );
  assert( status == -1 );
  assert( errno == ENOENT );
 
  /*
   * Create a subdirectory under the dangling node.
   */
 
  printf("mkdir ../t should fail with ENOENT\n" );
  status = mkdir( "../t" , S_IRWXU );
  assert( status == -1 );
  assert( errno == ENOENT );
 
  printf("mkdir t\n");
  status = mkdir( "t" , S_IRWXU );
  assert( status == 0 );
 
  printf("chdir to / \n");
  status = chdir( "/" );
  assert( status == 0 );
 
  /*
   * Check rmdir, rmnod, and unlink
   */
 
  printf("rmdir %s should fail with ENOTDIR\n", Links_to_Dirs[5] );
  status = rmdir( Links_to_Dirs[5] );
  assert( status == -1 );
  assert( errno == ENOTDIR );
 
  printf("unlink %s\n", Links_to_Dirs[5] );
  status = unlink( Links_to_Dirs[5] );
  assert( status == 0 );
 
  printf("unlink %s should fail with ENOTEMPTY\n", Links_to_dirlinks[5] );
  status = unlink(  Links_to_dirlinks[5] );
  assert( status == -1 );
  assert( errno == ENOTEMPTY );
 
  strcpy( longer_name,  Links_to_dirlinks[5] );
  strcat( longer_name, "/t");
  printf("rmdir %s\n", longer_name );
  status = rmdir( longer_name );
  assert( status == 0 );
 
  printf("unlink %s\n", Links_to_Dirs[5]);
  status = unlink( Links_to_dirlinks[5] );
  assert( status == 0 );
 
  status = chdir( Directories[0] );
  status = mkdir ( "my_mount_point", S_IRWXU );
  assert( status == 0 );
 
  printf("Attempting to mount IMFS file system at /dir1/my_mount_point \n");
  status = mount(
     &mt_entry,
     &IMFS_ops,
     RTEMS_FILESYSTEM_READ_WRITE,
     NULL,
     "/dir1/my_mount_point" );
  assert( status == 0 );
 
  printf("rmdir /dir1/my_mount_point should fail with EBUSY\n");
  status = rmdir ("/dir1/my_mount_point" );
  assert( status == -1 );
  assert( errno == EBUSY );
 
  printf( "Unmount /dir1/my_mount_point\n");
  status = unmount( "/dir1/my_mount_point" );
  assert( status == 0 );
 
  /*
   * Verify write permission is checked.
   */
 
  printf("chmod of %s to group and other execute\n", Files[0] );
  status = chmod (Files[0], (S_IXGRP | S_IXOTH) );
  assert( status == 0 );
 
  printf("Open %s for write should fail with EACCES\n", Files[0] );
  fd = open (Files[0], O_WRONLY); 
  assert( fd == -1 );
  assert( errno == EACCES );
 
  printf("chmod of %s to User Execute and Read\n", Directories[3] );
  status = chmod (Directories[3], (S_IXUSR | S_IRUSR) );
  assert( status == 0 );
  strcpy(longer_name, Directories[3] );
  strcat(longer_name, "/NewFile" );
  printf("Mkdir of %s should fail with EACCES\n",longer_name );
  status = mkdir( longer_name, S_IRWXU );
  assert( status != 0 );
  assert( errno == EACCES );
 
  printf(" Making too many hard links.\n" );
  make_too_many_links( );
 
  printf( "pass fstat a null pointer should fail with EFAULT\n");
  status = fstat( fd, NULL );
  assert( status == -1 ); 
  assert( errno == EFAULT);
 
  /*
   * The current directory MUST be restored at the end of this test.
   */
 
  printf("chdir to / \n");
  status = chdir( "/" );
  assert( status == 0 );
 
}
 
void Show_Time()
{
  rtems_time_of_day time;
  rtems_status_code status;
 
  status = rtems_clock_get( RTEMS_CLOCK_GET_TOD, &time );
  printf(">>>>Current Time: ");
  print_time( " - rtems_clock_get - ", &time, "\n" );
}
 
/*
 *  main entry point to the test
 */
 
#if defined(__rtems__)
int test_main(void)
#else
int main(
  int    argc,
  char **argv
)
#endif
{
  rtems_status_code status;
  rtems_time_of_day time;
 
  puts( "\n\n*** STAT TEST 01 ***" );
 
  build_time( &time, 12, 31, 1988, 9, 0, 0, 0 );
  status = rtems_clock_set( &time );
 
  /*
   *  Create the files and directories for the test.
   */
  Show_Time();
 
  make_multiple_directories( Directories );
  make_multiple_files( Files );
  make_multiple_links( Directories,    Links_to_Dirs );
  make_multiple_links( Files,          Links_to_Files );
 
  status = rtems_task_wake_after( 5 * TICKS_PER_SECOND );
  make_multiple_links( Links_to_Dirs,  Links_to_dirlinks );
  status = rtems_task_wake_after( 5 * TICKS_PER_SECOND );
  make_multiple_links( Links_to_Files, Links_to_filelinks );
 
  status = rtems_task_wake_after( 5 * TICKS_PER_SECOND );
 
  /*
   *  Now go through all the absolute path.
   */
 
  puts( "Doing the stat() on all the good absolute paths" );
  stat_multiple_files( Good_absolute_paths );
 
  /*
   *  run through the relative paths.
   */
 
  puts( "\nDoing the stat() on all the good relative paths" );
  stat_multiple_files( Good_relative_paths );
 
  /*
   * Change directory and releative paths are now bad.
   */
 
  puts("\nchdir to dev");
  chdir("dev");
  puts("\nstat relative paths that are now bad");
  stat_multiple_files( Good_relative_paths );
 
  /*
   * Change directory to the link directory and follow links.
   */
 
  puts("\nchdir to ../links");
  chdir("../links");
  puts("Doing the stat() on good links\n");
  stat_multiple_files( Links_to_Dirs );
  stat_multiple_files( Links_to_Files );
  stat_multiple_files( Links_to_dirlinks  );
  stat_multiple_files( Links_to_filelinks );
 
  /*
   * Chmod on dir1/dir1.  This allows the error path to be hit.
   */
 
  printf( "chmod of %s to Read/Write\n", Directories[4] );
  chmod( Directories[4], (S_IROTH|S_IWOTH) );
  puts( "\nDoing the stat() on all the bad paths" );
 
  stat_multiple_files( Bad_paths );
  make_multiple_bad_files( Bad_paths );
 
  printf( "Return %s to RWX\n", Directories[4] );
  chmod( Directories[4], S_IRWXU );
 
 
  /*
   * Check out symbolic links.
   */
 
  make_multiple_symlinks();
  make_many_symlinks( "/symlinks", 10 );
 
  status = rtems_task_wake_after( 5 * TICKS_PER_SECOND );
  Cause_faults();
 
  status = rtems_task_wake_after( 5 * TICKS_PER_SECOND );
  chown_multiple_files( Files );
 
  status = rtems_task_wake_after( 5 * TICKS_PER_SECOND );
  chown_multiple_files( Links_to_Dirs );
 
  puts( "\n\n*** END OF STAT TEST 01 ***" );
  exit(0);
}