/*
* Mount a filesystem. Once we've found the device, call MOUNTFUNC to
* set up the filesystem and hand back a struct fs.
*
* The DATA argument is passed through unchanged to MOUNTFUNC.
*/
int
vfs_mount(const char *devname, void *data,
int (*mountfunc)(void *data, struct device *, struct fs **ret))
{
const char *volname;
struct knowndev *kd;
struct fs *fs;
int result;
vfs_biglock_acquire();
result = findmount(devname, &kd);
if (result) {
vfs_biglock_release();
return result;
}
if (kd->kd_fs != NULL) {
vfs_biglock_release();
return EBUSY;
}
KASSERT(kd->kd_rawname != NULL);
KASSERT(kd->kd_device != NULL);
result = mountfunc(data, kd->kd_device, &fs);
if (result) {
vfs_biglock_release();
return result;
}
KASSERT(fs != NULL);
kd->kd_fs = fs;
volname = FSOP_GETVOLNAME(fs);
kprintf("vfs: Mounted %s: on %s\n",
volname ? volname : kd->kd_name, kd->kd_name);
vfs_biglock_release();
return 0;
}
/*
* Mount a filesystem. Once we've found the device, call MOUNTFUNC to
* set up the filesystem and hand back a struct fs.
*/
int
vfs_mount(const char *devname, int (*mountfunc)(struct device *dev, struct fs **fs_store)) {
int ret;
lock_vdev_list();
vfs_dev_t *vdev;
if ((ret = find_mount(devname, &vdev)) != 0) {
goto out;
}
if (vdev->fs != NULL) {
ret = -E_BUSY;
goto out;
}
assert(vdev->devname != NULL && vdev->mountable);
struct device *dev = vop_info(vdev->devnode, device);
if ((ret = mountfunc(dev, &(vdev->fs))) == 0) {
assert(vdev->fs != NULL);
cprintf("vfs: mount %s.\n", vdev->devname);
}
out:
unlock_vdev_list();
return ret;
}
