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/* Created (MFS based):
* June 2011 (Evgeniy Ivanov)
*/
#include "fs.h"
#include <fcntl.h>
#include <minix/vfsif.h>
/*===========================================================================*
* fs_mount *
*===========================================================================*/
int fs_mount(dev_t __unused dev, unsigned int flags,
struct fsdriver_node *root_node, unsigned int *res_flags)
{
struct vattr *root_va;
is_readonly_fs = !!(flags & REQ_RDONLY);
/* Open root pnode */
global_pu->pu_pn_root->pn_count = 1;
/* Root pnode properties */
root_va = &global_pu->pu_pn_root->pn_va;
root_node->fn_ino_nr = root_va->va_fileid;
root_node->fn_mode = root_va->va_mode;
root_node->fn_size = root_va->va_size;
root_node->fn_uid = root_va->va_uid;
root_node->fn_gid = root_va->va_gid;
root_node->fn_dev = NO_DEV;
*res_flags = RES_NOFLAGS;
mounted = TRUE;
return(OK);
}
/*===========================================================================*
* fs_mountpt *
*===========================================================================*/
int fs_mountpt(ino_t ino_nr)
{
/* 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;
if ((pn = puffs_pn_nodewalk(global_pu, find_inode_cb, &ino_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 *
*===========================================================================*/
void fs_unmount(void)
{
int error;
/* Always force unmounting, as VFS will not tolerate failure. */
error = global_pu->pu_ops.puffs_fs_unmount(global_pu, MNT_FORCE);
if (error) {
lpuffs_debug("user handler failed to unmount filesystem!\
Force unmount!\n");
}
fs_sync();
/* Finish off the unmount. */
PU_SETSTATE(global_pu, PUFFS_STATE_UNMOUNTED);
mounted = FALSE;
global_pu->pu_pn_root->pn_count--;
}
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