98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
/* Created (MFS based):
|
|
* June 2011 (Evgeniy Ivanov)
|
|
*/
|
|
|
|
#include "fs.h"
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <minix/com.h>
|
|
#include <sys/stat.h>
|
|
#include <minix/ds.h>
|
|
#include <minix/vfsif.h>
|
|
|
|
#include "puffs_priv.h"
|
|
|
|
/*===========================================================================*
|
|
* fs_readsuper *
|
|
*===========================================================================*/
|
|
int fs_readsuper()
|
|
{
|
|
struct vattr *root_va;
|
|
|
|
fs_dev = fs_m_in.REQ_DEV;
|
|
is_readonly_fs = (fs_m_in.REQ_FLAGS & REQ_RDONLY) ? 1 : 0;
|
|
is_root_fs = (fs_m_in.REQ_FLAGS & REQ_ISROOT) ? 1 : 0;
|
|
|
|
/* Open root pnode */
|
|
global_pu->pu_pn_root->pn_count = 1;
|
|
|
|
/* Root pnode properties */
|
|
root_va = &global_pu->pu_pn_root->pn_va;
|
|
fs_m_out.RES_INODE_NR = root_va->va_fileid;
|
|
fs_m_out.RES_MODE = root_va->va_mode;
|
|
fs_m_out.RES_FILE_SIZE_LO = root_va->va_size;
|
|
fs_m_out.RES_UID = root_va->va_uid;
|
|
fs_m_out.RES_GID = root_va->va_gid;
|
|
fs_m_out.RES_CONREQS = 1;
|
|
|
|
return(OK);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* fs_mountpoint *
|
|
*===========================================================================*/
|
|
int fs_mountpoint()
|
|
{
|
|
/* This function looks up the mount point, it checks the condition whether
|
|
* the partition can be mounted on the pnode or not.
|
|
*/
|
|
int r = OK;
|
|
struct puffs_node *pn;
|
|
mode_t bits;
|
|
|
|
/*
|
|
* XXX: we assume that lookup was done first, so pnode can be found with
|
|
* puffs_pn_nodewalk.
|
|
*/
|
|
if ((pn = puffs_pn_nodewalk(global_pu, 0, &fs_m_in.REQ_INODE_NR)) == NULL)
|
|
return(EINVAL);
|
|
|
|
|
|
if (pn->pn_mountpoint) r = EBUSY;
|
|
|
|
/* It may not be special. */
|
|
bits = pn->pn_va.va_mode & I_TYPE;
|
|
if(bits == I_BLOCK_SPECIAL || bits == I_CHAR_SPECIAL) r = ENOTDIR;
|
|
|
|
if (r == OK)
|
|
pn->pn_mountpoint = TRUE;
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* fs_unmount *
|
|
*===========================================================================*/
|
|
int fs_unmount()
|
|
{
|
|
int error;
|
|
|
|
/* XXX there is no information about flags, 0 should be safe enough */
|
|
error = global_pu->pu_ops.puffs_fs_unmount(global_pu, 0);
|
|
if (error) {
|
|
/* XXX we can't return any error to VFS */
|
|
lpuffs_debug("user handler failed to unmount filesystem!\
|
|
Force unmount!\n");
|
|
}
|
|
|
|
fs_sync();
|
|
|
|
/* Finish off the unmount. */
|
|
PU_SETSTATE(global_pu, PUFFS_STATE_UNMOUNTED);
|
|
unmountdone = TRUE;
|
|
global_pu->pu_pn_root->pn_count--;
|
|
|
|
return(OK);
|
|
}
|