mount.c

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/*****************************************************************************************
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 All rights reserved.

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 $Id: mount_8c-source.html 88 2016-01-12 00:11:29Z reddawg $

*****************************************************************************************/

#include <vfs/mount.h>
#include <ubixos/vitals.h>
#include <ubixos/kpanic.h>
#include <lib/kmalloc.h>
#include <lib/kprintf.h>
#include <lib/string.h>
#include <sys/device.h>

/************************************************************************

Function: mount(int driveId,int partition,int fsType,char *mountPoint,char *perms)

Description: mount adds a mount point and returns 0 if successful 1 if it fails

Notes:

************************************************************************/
int vfs_mount(int major,int minor,int partition,int vfsType,char *mountPoint,char *perms) {
  struct vfs_mountPoint *mp     = 0x0;
  struct device_node  *device = 0x0;

  /* Allocate Memory For Mount Point */
  if ((mp = (struct vfs_mountPoint *)kmalloc(sizeof(struct vfs_mountPoint))) == NULL)
    kprintf("vfs_mount: failed to allocate mp\n");

  /* Copy Mount Point Into Buffer */
  sprintf(mp->mountPoint,mountPoint);
  
  /* Set Pointer To Physical Drive */
  device = device_find(major,minor);

  /* Set Up Mp Defaults */
  mp->device    = device;
  mp->fs        = vfsFindFS(vfsType);
  mp->partition = partition;
  mp->perms     = *perms;

  if (mp->fs == 0x0) {
    /* sysErr(systemErr,"File System Type: %i Not Found\n",fsType); */
    kprintf("File System Type: %i Not Found\n",vfsType);
    return(0x1);
    }
  /*What is this for? 10/6/2006 */
/*
  if (device != 0x0) {
    mp->diskLabel = (struct ubixDiskLabel *)kmalloc(512);
    mp->device->devInfo->read(mp->device->devInfo->info,mp->diskLabel,1,1);
    kprintf("READING SECTOR");
    }
*/

  /* Add Mountpoint If It Fails Free And Return */
  if (vfs_addMount(mp) != 0x0) {
    kfree(mp);
    return(0x1);
    }

  /* Initialize The File System If It Fails Return */
  if (mp->fs->vfsInitFS(mp) == 0x0) {
    kfree(mp);
    return(0x1);
    }
  /* Return */
  return(0x0);
  }

/************************************************************************

Function: vfs_addMount(struct vfs_mountPoint *mp)

Description: This function adds a mount point to the system

Notes:

************************************************************************/
int vfs_addMount(struct vfs_mountPoint  *mp) {

  /* If There Are No Existing Mounts Make It The First */
  if (systemVitals->mountPoints == 0x0) {
    mp->prev               = 0x0;
    mp->next               = 0x0;
    systemVitals->mountPoints = mp;
    }
  else {
    mp->next                        = systemVitals->mountPoints;
    systemVitals->mountPoints->prev = mp;
    mp->prev                        = 0x0;
    systemVitals->mountPoints       = mp;
    }
  /* Return */
  return(0x0);
  }

/************************************************************************

Function: vfs_findMount(char *mountPoint)

Description: This function finds a particular mount point

Notes:

************************************************************************/
struct vfs_mountPoint *vfs_findMount(char *mountPoint) {
  struct vfs_mountPoint *tmpMp = 0x0;

  for (tmpMp=systemVitals->mountPoints;tmpMp;tmpMp=tmpMp->next) {
    if (strcmp(tmpMp->mountPoint,mountPoint) == 0x0) {
      return(tmpMp);
      }
    }
  /* Return NULL If Mount Point Not Found */
  return NULL;
  }

/***
 END
 ***/

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