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Simplify and de-bogotify check for raw disk.

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This commit is contained in:
Poul-Henning Kamp 1999-11-07 13:09:09 +00:00
parent 18284c9419
commit 008626c39e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=52969
1 changed files with 15 additions and 31 deletions
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46
sys/kern/vfs_aio.c
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@ -923,52 +923,36 @@ aio_qphysio(p, aiocbe)
int fd;
int s;
int cnt;
struct cdevsw *cdev;
cb = &aiocbe->uaiocb;
fdp = p->p_fd;
fd = cb->aio_fildes;
fp = fdp->fd_ofiles[fd];
if (fp->f_type != DTYPE_VNODE) {
return -1;
}
if (fp->f_type != DTYPE_VNODE)
return (-1);
vp = (struct vnode *)fp->f_data;
if (vp->v_type != VCHR || ((cb->aio_nbytes & (DEV_BSIZE - 1)) != 0)) {
return -1;
}
if ((cb->aio_nbytes > MAXPHYS) && (num_buf_aio >= max_buf_aio)) {
return -1;
}
/* XXX: use vn_isdisk() when VBLK and VCHR are unified */
if (vp->v_type != VCHR)
return (-1);
if (!(devsw(vp->v_rdev)->d_flags & D_DISK))
return (-1);
if ((vp->v_rdev == NULL) || (vp->v_flag & VISTTY)) {
return -1;
}
if (cb->aio_nbytes % vp->v_rdev->si_bsize_phys)
return (-1);
if (vp->v_rdev == NODEV) {
return -1;
}
cdev = devsw(vp->v_rdev);
if (cdev == NULL) {
return -1;
}
if (cdev->d_bmaj == -1) {
return -1;
}
if ((cb->aio_nbytes > MAXPHYS) && (num_buf_aio >= max_buf_aio))
return (-1);
ki = p->p_aioinfo;
if (ki->kaio_buffer_count >= ki->kaio_ballowed_count) {
return -1;
}
if (ki->kaio_buffer_count >= ki->kaio_ballowed_count)
return (-1);
cnt = cb->aio_nbytes;
if (cnt > MAXPHYS) {
return -1;
}
if (cnt > MAXPHYS)
return (-1);
/*
* Physical I/O is charged directly to the process, so we don't have