diff options
Diffstat (limited to 'sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c')
| -rw-r--r-- | sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c b/sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c new file mode 100644 index 0000000..b205238 --- /dev/null +++ b/sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c @@ -0,0 +1,142 @@ +/*- + * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/kthread.h> +#include <sys/namei.h> +#include <sys/proc.h> +#include <sys/filedesc.h> +#include <sys/vnode.h> +#include <sys/fcntl.h> +#include <sys/kobj.h> + +void +kobj_free(void *address, size_t size) +{ + + kmem_free(address, size); +} + +void * +kobj_alloc(size_t size, int flag) +{ + + return (kmem_alloc(size, (flag & KM_NOWAIT) ? KM_NOSLEEP : KM_SLEEP)); +} + +void * +kobj_zalloc(size_t size, int flag) +{ + void *p; + + if ((p = kobj_alloc(size, flag)) != NULL) + bzero(p, size); + return (p); +} + +struct _buf * +kobj_open_file(const char *file) +{ + struct thread *td = curthread; + struct nameidata nd; + int error, flags; + + if (td->td_proc->p_fd->fd_rdir == NULL) + td->td_proc->p_fd->fd_rdir = rootvnode; + if (td->td_proc->p_fd->fd_cdir == NULL) + td->td_proc->p_fd->fd_cdir = rootvnode; + + flags = FREAD; + NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, file, td); + error = vn_open_cred(&nd, &flags, 0, td->td_ucred, -1); + NDFREE(&nd, NDF_ONLY_PNBUF); + if (error != 0) + return ((struct _buf *)-1); + /* We just unlock so we hold a reference. */ + VOP_UNLOCK(nd.ni_vp, 0, td); + return ((struct _buf *)nd.ni_vp); +} + +int +kobj_get_filesize(struct _buf *file, uint64_t *size) +{ + struct vnode *vp = (struct vnode *)file; + struct thread *td = curthread; + struct vattr va; + int error; + + vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); + error = VOP_GETATTR(vp, &va, td->td_ucred, td); + VOP_UNLOCK(vp, 0, td); + if (error == 0) + *size = (uint64_t)va.va_size; + return (error); +} + +int +kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off) +{ + struct vnode *vp = (struct vnode *)file; + struct thread *td = curthread; + struct uio auio; + struct iovec aiov; + int error; + + bzero(&aiov, sizeof(aiov)); + bzero(&auio, sizeof(auio)); + + aiov.iov_base = buf; + aiov.iov_len = size; + + auio.uio_iov = &aiov; + auio.uio_offset = (off_t)off; + auio.uio_segflg = UIO_SYSSPACE; + auio.uio_rw = UIO_READ; + auio.uio_iovcnt = 1; + auio.uio_resid = size; + auio.uio_td = td; + + vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); + error = VOP_READ(vp, &auio, IO_UNIT | IO_SYNC, td->td_ucred); + VOP_UNLOCK(vp, 0, td); + return (error != 0 ? -1 : size - auio.uio_resid); +} + +void +kobj_close_file(struct _buf *file) +{ + struct vnode *vp = (struct vnode *)file; + struct thread *td = curthread; + int flags; + + flags = FREAD; + vn_close(vp, flags, td->td_ucred, td); +} |
