Copyright 1999-2001, Be Incorporated. All Rights Reserved.
This file may be used under the terms of the Be Sample Code License.
*/
* handles mime type information for dosfs
* gets/sets mime information in vnode
*/
#define MIME_STRING_TYPE 'MIMS'
#include "system_dependencies.h"
#ifndef FS_SHELL
#include <file_systems/mime_ext_table.h>
#endif
#include "dosfs.h"
#include "attr.h"
int32 kBeOSTypeCookie = 0x1234;
#define DPRINTF(a,b) if (debug_attr > (a)) dprintf b
status_t set_mime_type(vnode *node, const char *filename)
{
#ifdef FS_SHELL
return B_ERROR;
#else
return set_mime(&node->mime, filename);
#endif
}
status_t
dosfs_open_attrdir(fs_volume *_vol, fs_vnode *_node, void **_cookie)
{
DPRINTF(0, ("dosfs_open_attrdir called\n"));
if ((*_cookie = malloc(sizeof(uint32))) == NULL) {
return ENOMEM;
}
*(int32 *)(*_cookie) = 0;
return 0;
}
status_t
dosfs_close_attrdir(fs_volume *_vol, fs_vnode *_node, void *_cookie)
{
DPRINTF(0, ("dosfs_close_attrdir called\n"));
*(int32 *)_cookie = 1;
return 0;
}
status_t
dosfs_free_attrdir_cookie(fs_volume *_vol, fs_vnode *_node, void *_cookie)
{
DPRINTF(0, ("dosfs_free_attrcookie called\n"));
if (_cookie == NULL) {
dprintf("error: dosfs_free_attrcookie called with null cookie\n");
return EINVAL;
}
*(int32 *)_cookie = 0x87654321;
free(_cookie);
return 0;
}
status_t
dosfs_rewind_attrdir(fs_volume *_vol, fs_vnode *_node, void *_cookie)
{
DPRINTF(0, ("dosfs_rewind_attrdir called\n"));
if (_cookie == NULL) {
dprintf("error: dosfs_rewind_attrcookie called with null cookie\n");
return EINVAL;
}
*(uint32 *)_cookie = 0;
return 0;
}
status_t
dosfs_read_attrdir(fs_volume *_vol, fs_vnode *_node, void *_cookie,
struct dirent *entry, size_t bufsize, uint32 *num)
{
nspace *vol = (nspace *)_vol->private_volume;
vnode *node = (vnode *)_node->private_node;
int32 *cookie = (int32 *)_cookie;
DPRINTF(0, ("dosfs_read_attrdir called\n"));
*num = 0;
RecursiveLocker lock(vol->vlock);
if ((*cookie == 0) && (node->mime)) {
*num = 1;
entry->d_ino = node->vnid;
entry->d_dev = vol->id;
strcpy(entry->d_name, "BEOS:TYPE");
entry->d_reclen = offsetof(struct dirent, d_name) + strlen(entry->d_name) + 1;
}
*cookie = 1;
return 0;
}
status_t
dosfs_open_attr(fs_volume *_vol, fs_vnode *_node, const char *name,
int openMode, void **_cookie)
{
nspace *vol = (nspace *)_vol->private_volume;
vnode *node = (vnode *)_node->private_node;
if (strcmp(name, "BEOS:TYPE"))
return ENOENT;
RecursiveLocker lock(vol->vlock);
if (node->mime == NULL) {
return ENOENT;
}
*_cookie = &kBeOSTypeCookie;
return B_OK;
}
status_t
dosfs_close_attr(fs_volume *_vol, fs_vnode *_node, void *cookie)
{
return B_OK;
}
status_t
dosfs_free_attr_cookie(fs_volume *_vol, fs_vnode *_node, void *cookie)
{
return B_OK;
}
status_t
dosfs_read_attr_stat(fs_volume *_vol, fs_vnode *_node, void *_cookie,
struct stat *stat)
{
nspace *vol = (nspace *)_vol->private_volume;
vnode *node = (vnode *)_node->private_node;
DPRINTF(0, ("dosfs_read_attr_stat\n"));
if (_cookie != &kBeOSTypeCookie)
return ENOENT;
RecursiveLocker lock(vol->vlock);
if (node->mime == NULL) {
return ENOENT;
}
stat->st_type = MIME_STRING_TYPE;
stat->st_size = strlen(node->mime) + 1;
return 0;
}
status_t
dosfs_read_attr(fs_volume *_vol, fs_vnode *_node, void *_cookie, off_t pos,
void *buffer, size_t *_length)
{
nspace *vol = (nspace *)_vol->private_volume;
vnode *node = (vnode *)_node->private_node;
ssize_t length;
DPRINTF(0, ("dosfs_read_attr\n"));
if (_cookie != &kBeOSTypeCookie)
return ENOENT;
RecursiveLocker lock(vol->vlock);
if (node->mime == NULL)
return ENOENT;
if ((pos < 0) || (pos > (off_t)strlen(node->mime)))
return EINVAL;
length = user_strlcpy((char*)buffer, node->mime + pos, *_length);
if (length < B_OK)
return B_BAD_ADDRESS;
if ((size_t)length < *_length)
*_length = length + 1;
return 0;
}
status_t
dosfs_write_attr(fs_volume *_vol, fs_vnode *_node, void *_cookie,
off_t pos, const void *buffer, size_t *_length)
{
DPRINTF(0, ("dosfs_write_attr\n"));
*_length = 0;
if (_cookie != &kBeOSTypeCookie)
return ENOSYS;
return B_OK;
}
