diff options
| -rw-r--r-- | sys/fs/devfs.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/sys/fs/devfs.c b/sys/fs/devfs.c index 0589bbe..024239d 100644 --- a/sys/fs/devfs.c +++ b/sys/fs/devfs.c @@ -63,6 +63,22 @@ bdevsw_read(void *devsw, dev_t dev, struct sio_txn *sio) return bdevsw->read(dev, sio, 0); } +static inline int +cdevsw_write(void *devsw, dev_t dev, struct sio_txn *sio) +{ + struct cdevsw *cdevsw = devsw; + + return cdevsw->write(dev, sio, 0); +} + +static inline int +bdevsw_write(void *devsw, dev_t dev, struct sio_txn *sio) +{ + struct bdevsw *bdevsw = devsw; + + return bdevsw->write(dev, sio, 0); +} + /* * Get a devfs node by name. * @@ -174,6 +190,25 @@ devfs_read(struct vnode *vp, struct sio_txn *sio) } static int +devfs_write(struct vnode *vp, struct sio_txn *sio) +{ + struct devfs_node *dnp; + void *devsw; + + if ((dnp = vp->data) == NULL) + return -EIO; + + devsw = dev_get(dnp->major, dnp->dev); + + if (!dnp->is_block) { + return cdevsw_write(devsw, dnp->dev, sio); + } + + /* Block device */ + return bdevsw_write(devsw, dnp->dev, sio); +} + +static int devfs_init(struct fs_info *fip) { struct vnode *vp; @@ -232,6 +267,7 @@ const struct vops g_devfs_vops = { .lookup = devfs_lookup, .reclaim = devfs_reclaim, .read = devfs_read, + .write = devfs_write, .getattr = devfs_getattr }; |