/*
* This is a native test to explore how the readdir() family works.
* Newlib supports the following readdir() family members:
*
* closedir() -
* readdir() -
* scandir() -
* opendir() -
* rewinddir() -
* telldir() - BSD not in POSIX
* seekdir() - BSD not in POSIX
*
*
* seekdir() takes an offset which is a byte offset. The Linux
* implementation of this appears to seek to the ((off/DIRENT_SIZE) + 1)
* record where DIRENT_SIZE seems to be 12 bytes.
*
*
*
* $Id$
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>
#include <errno.h>
#include <rtems.h>
#include <rtems/libio.h>
#include <imfs.h>
extern rtems_filesystem_location_info_t rtems_filesystem_current;
DIR *directory;
DIR *directory2;
DIR *directory3;
DIR *directory_not;
#ifndef __P
#define __P(args)()
#endif
char *dnames[] = {
"a",
"b",
"c",
"d",
"e",
"f",
"c/y",
"c/z",
"c/x",
"c/y/a3333",
"c/y/j123",
"c/y/my_mount_point",
"c/y/my_mount_point/my_dir",
"c/z/my_mount_point",
"END"
};
char *fnames[] = {
"a",
"b",
"c",
"d",
"e",
"f",
"c/y",
"c/z",
"c/x",
"c/y/a3333",
"c/y/j123",
"c/y/my_mount_point",
"c/y/my_mount_point/my_dir",
"c/y/my_mount_point/my_dir/d",
"c/z/my_mount_point",
"/c/z/my_mount_point/a/../../my_mount_point/a/g",
"END"
};
#if defined(__rtems__)
int test_main(void)
#else
int main(
int argc,
char **argv
)
#endif
{
int i;
int fd;
int status;
struct stat statbuf;
rtems_filesystem_mount_table_entry_t *mt_entry;
static char mount_point_string[25] = { "/c/z/my_mount_point" };
printf( "\n\n*** MOUNT/UNMOUNT TEST ***\n" );
/*
* Change directory to the root and create files under
* the base file system.
*/
printf( "\nchdir to the root directory\n" );
status = chdir( "/" );
printf( "chdir() status : %d\n\n", status );
printf( "\nCreating a series of directories under /\n" );
i=0;
while ( strcmp(dnames[i], "END") != 0 )
{
status = mkdir( dnames[i], 0777 );
printf("Creating : %25s %d %d ", dnames[i], status, errno );
if ( status == 0 )
printf(" Success\n");
else
printf(" Failure\n");
i++;
}
/*
* Create a Files with all rwx for others group and user. Verify
* the created file.
*/
printf("create /b/my_file\n");
fd = open ("/b/my_file", O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO);
assert( fd != 0 );
close (fd);
printf("Verify /b/my_file\n");
fd = open("/b/my_file", S_IRWXU|S_IRWXG|S_IRWXO);
assert( fd != 0 );
close( fd );
printf("create c/y/my_mount_point/my_dir/d\n");
fd = open ("c/y/my_mount_point/my_dir/d", O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO);
assert( fd != 0 );
close (fd);
printf("Verify c/y/my_mount_point/my_dir/d\n");
fd = open("c/y/my_mount_point/my_dir/d", S_IRWXU|S_IRWXG|S_IRWXO);
assert( fd != 0 );
close( fd );
/*
* Mount an the IMFS file system on the base file system.
*/
printf("Attempting to mount IMFS file system at /c/z/my_mount_point \n");
status = mount(
&mt_entry,
&IMFS_ops,
RTEMS_FILESYSTEM_READ_WRITE,
NULL,
mount_point_string );
assert( status == 0 );
if( mt_entry == NULL ){
printf(" NULL mount table entry was returned\n");
}
else {
printf("2nd file system successfully mounted at /c/z/my_mount_point \n");
}
/*
* Change directory to the mount point and create a group of files under
* the mounted file system.
*/
printf( "\nchdir to /c/z/my_mount_point.\n" );
status = chdir( "/c/z/my_mount_point" );
printf( "chdir() status : %d\n\n", status );
printf( "\nCreating a series of directories under /c/z/my_mount_point\n" );
i=0;
while ( strcmp(fnames[i], "END") != 0 )
{
status = mkdir( fnames[i], 0777 );
printf("Creating: %46s %d %d ", fnames[i], status, errno );
if ( status == 0 )
printf(" Success\n");
else {
printf(" Failure\n");
perror("errno");
}
status = stat( fnames[i], &statbuf );
if ( status == -1 )
printf( ": %s\n", strerror( errno ) );
i++;
}
printf( "\nchdir to /\n" );
status = chdir( "/" );
printf( "chdir() status : %d\n\n", status );
/*
* Unmount the first file system we mounted
*/
printf( "Unmount status:");
status = unmount( "/c/z/my_mount_point" );
printf( " %d\n", status );
/*
* Mount a NULL filesystem and verify it fails.
*/
printf("Mount a NULL file system and verify EINVAL\n");
status = mount(
&mt_entry,
NULL,
RTEMS_FILESYSTEM_READ_WRITE,
NULL,
mount_point_string );
assert( status == -1 );
assert( errno == EINVAL );
/*
* Verify mount with option of -62 fails with EINVAL
*/
printf("mount with option of -62 should fail with EINVAL\n");
status = mount(
&mt_entry,
&IMFS_ops,
-62,
NULL,
"/c/y/my_mount_point" );
assert( status == -1 );
assert( errno == EINVAL );
/*
* Mount a Read Only File system.
*/
printf("Mount a Read Only filesystem at /c/y/my_mount_point \n");
status = mount(
&mt_entry,
&IMFS_ops,
RTEMS_FILESYSTEM_READ_ONLY,
NULL,
"/c/y/my_mount_point" );
assert( status == 0 );
if( mt_entry == NULL ){
printf(" NULL mount table entry was returned\n");
}
else {
printf("Read only file system successfully mounted at /c/y/my_mount_point \n");
}
/*
* Create a directory that passes through the read only file system.
*/
printf("create c/y/my_mount_point/../../y/my_mount_point/new_dir\n");
status = mkdir("c/y/my_mount_point/../../y/my_mount_point/new_dir",S_IRWXU );
assert( status == 0 );
status = stat("c/y/my_mount_point/../../y/my_mount_point/new_dir",&statbuf );
assert( status == 0 );
status = stat("c/y/my_mount_point/new_dir/..", &statbuf );
assert( status == 0 );
/*
* Attempt to mount a second file system at a used mount point.
*/
printf("Verify a mount point returns EBUSY for another mount\n");
status = mount(
&mt_entry,
&IMFS_ops,
RTEMS_FILESYSTEM_READ_ONLY,
NULL,
"/c/y/my_mount_point" );
assert( status == -1 );
assert( errno == EBUSY);
/*
* Attempt to mount at a file.
*/
printf("Mount on a file should fail with ENOTDIR\n");
status = mount(
&mt_entry,
&IMFS_ops,
RTEMS_FILESYSTEM_READ_ONLY,
NULL,
"/b/my_file" );
assert( status == -1 );
assert( errno == ENOTDIR );
/*
* Verify we cannot unmount a file system while we are in it.
*/
printf("Create and chdir to /c/y/my_mount_point/mydir\n");
status = mkdir( "/c/y/my_mount_point/mydir", 0777);
assert( status == 0 );
status = chdir( "/c/y/my_mount_point/mydir" );
assert( status == 0 );
printf("unmount of /c/y/my_mount_point should fail with EBUSY\n");
status = unmount( "/c/y/my_mount_point" );
assert( status == -1 );
assert( errno == EBUSY );
/*
* Chdir to root and verify we can unmount the file system now.
*/
printf("chdir to / and verify we can unmount /c/y/my_mount_point\n");
status = chdir( "/" );
assert( status == 0 );
printf("unmount /c/y/my_mount_point \n");
status = unmount( "/c/y/my_mount_point" );
assert( status == 0 );
/*
* Attempt to unmount a directory that does not exist.
*/
printf("unmount /b/mount_point should fail with EINVAL\n");
status = unmount( "/b/mount_point" );
assert( status == -1 );
assert( errno == ENOENT );
/*
* Remount the filesystem.
*/
printf("Mount /c/y/my_mount_point\n");
status = mount(
&mt_entry,
&IMFS_ops,
RTEMS_FILESYSTEM_READ_ONLY,
NULL,
"/c/y/my_mount_point" );
assert( status == 0 );
/*
* Create a file and directory then open the directory.
* Verify unmount will return EBUSY while directory is open.
*/
printf("Create and open /c/y/my_mount_point/my_file\n");
fd = open( "/c/y/my_mount_point/my_file", O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO);
assert( fd != -1 );
status = close( fd );
assert( status == 0 );
printf("\nmkdir /c/y/my_mount_point/my_dir\n");
status = mkdir( "/c/y/my_mount_point/my_dir", 0x1c0 );
printf("Open /c/y/my_mount_point/my_dir\n");
directory = opendir( "/c/y/my_mount_point/my_dir" );
assert( directory );
printf("Unmount /c/y/my_mount_point should fail with EBUSY\n");
status = unmount( "/c/y/my_mount_point" );
assert( status == -1 );
assert( errno == EBUSY );
printf("Close /c/y/my_mount_point/my_dir\n");
status = closedir( directory );
assert( status == 0 );
/*
* Attempt to unmount a directory that is not a mount point.
*/
printf("Unmount /c/y/my_mount_point/my_dir\n");
status = unmount( "/c/y/my_mount_point/my_dir" );
assert( status == -1 );
assert( errno == EACCES );
/*
* Verify a file system can not be unmounted with a mounted file system
* in it.
*/
printf("Mount a file system at /c/y/my_mount_point/my_dir\n");
status = mount(
&mt_entry,
&IMFS_ops,
RTEMS_FILESYSTEM_READ_WRITE,
NULL,
"/c/y/my_mount_point/my_dir");
assert( status == 0 );
printf("unmount /c/y/my_mount_point should fail with EBUSY\n");
status = unmount( "/c/y/my_mount_point" );
assert( status == -1 );
assert( errno == EBUSY );
/*
* Verify you cannot create a hard link across mounted file systems.
*/
printf("Verify a hard link across filesystems fails with EXDEV\n");
status = mkdir( "/c/y/my_mount_point/my_dir2", S_IRWXU );
assert( status == 0 );
status = link( "/c/y/my_mount_point/my_dir2", "/c/y/my_mount_point/my_dir/my_link" );
assert( status == -1 );
assert( errno == EXDEV );
/*
* Create a symbolic link across mountpoints.
*/
printf("Verify a symbolic link across file systems works\n");
status = symlink( "/c/y/my_mount_point/my_dir2", "/c/y/my_mount_point/my_dir/my_link" );
assert( status == 0 );
status = stat( "/c/y/my_mount_point/my_dir/my_link", &statbuf );
assert( status == 0 );
printf("unmount /c/y/my_mount_point/my_dir\n");
status = unmount( "/c/y/my_mount_point/my_dir" );
assert( status == 0 );
/*
* Verify symblic link no longer works.
*/
printf("Verify the symbolic link now fails\n");
status = stat( "/c/y/my_mount_point/my_dir/my_link", &statbuf );
assert( status != 0 );
printf("unmount /c/y/my_mount_point\n");
status = unmount( "/c/y/my_mount_point" );
assert( status == 0 );
printf( "\n\n*** END OF MOUNT/UNMOUNT TEST ***\n" );
exit(0);
}
