/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the
- * License may not be used to create, or enable the creation or
- * redistribution of, unlawful or unlicensed copies of an Apple operating
- * system, or to circumvent, violate, or enable the circumvention or
- * violation of, any terms of an Apple operating system software license
- * agreement.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
#define VOPFUNC int (*)(void *)
-extern int soo_ioctl(struct fileproc *fp, u_long cmd, caddr_t data, struct proc *p);
-extern int soo_select(struct fileproc *fp, int which, void * wql, struct proc *p);
-
-int (**fifo_vnodeop_p)(void *);
-struct vnodeopv_entry_desc fifo_vnodeop_entries[] = {
- { &vnop_default_desc, (VOPFUNC)vn_default_error },
- { &vnop_lookup_desc, (VOPFUNC)fifo_lookup }, /* lookup */
- { &vnop_create_desc, (VOPFUNC)err_create }, /* create */
- { &vnop_mknod_desc, (VOPFUNC)err_mknod }, /* mknod */
- { &vnop_open_desc, (VOPFUNC)fifo_open }, /* open */
- { &vnop_close_desc, (VOPFUNC)fifo_close }, /* close */
- { &vnop_access_desc, (VOPFUNC)fifo_access }, /* access */
- { &vnop_getattr_desc, (VOPFUNC)fifo_getattr }, /* getattr */
- { &vnop_setattr_desc, (VOPFUNC)fifo_setattr }, /* setattr */
- { &vnop_read_desc, (VOPFUNC)fifo_read }, /* read */
- { &vnop_write_desc, (VOPFUNC)fifo_write }, /* write */
- { &vnop_ioctl_desc, (VOPFUNC)fifo_ioctl }, /* ioctl */
- { &vnop_select_desc, (VOPFUNC)fifo_select }, /* select */
- { &vnop_revoke_desc, (VOPFUNC)fifo_revoke }, /* revoke */
- { &vnop_mmap_desc, (VOPFUNC)err_mmap }, /* mmap */
- { &vnop_fsync_desc, (VOPFUNC)fifo_fsync }, /* fsync */
- { &vnop_remove_desc, (VOPFUNC)err_remove }, /* remove */
- { &vnop_link_desc, (VOPFUNC)err_link }, /* link */
- { &vnop_rename_desc, (VOPFUNC)err_rename }, /* rename */
- { &vnop_mkdir_desc, (VOPFUNC)err_mkdir }, /* mkdir */
- { &vnop_rmdir_desc, (VOPFUNC)err_rmdir }, /* rmdir */
- { &vnop_symlink_desc, (VOPFUNC)err_symlink }, /* symlink */
- { &vnop_readdir_desc, (VOPFUNC)err_readdir }, /* readdir */
- { &vnop_readlink_desc, (VOPFUNC)err_readlink }, /* readlink */
- { &vnop_inactive_desc, (VOPFUNC)fifo_inactive }, /* inactive */
- { &vnop_reclaim_desc, (VOPFUNC)fifo_reclaim }, /* reclaim */
- { &vnop_strategy_desc, (VOPFUNC)err_strategy }, /* strategy */
- { &vnop_pathconf_desc, (VOPFUNC)fifo_pathconf }, /* pathconf */
- { &vnop_advlock_desc, (VOPFUNC)fifo_advlock }, /* advlock */
- { &vnop_bwrite_desc, (VOPFUNC)fifo_bwrite }, /* bwrite */
- { &vnop_pagein_desc, (VOPFUNC)err_pagein }, /* Pagein */
- { &vnop_pageout_desc, (VOPFUNC)err_pageout }, /* Pageout */
- { &vnop_copyfile_desc, (VOPFUNC)err_copyfile }, /* Copyfile */
- { &vnop_blktooff_desc, (VOPFUNC)err_blktooff }, /* blktooff */
- { &vnop_offtoblk_desc, (VOPFUNC)err_offtoblk }, /* offtoblk */
- { &vnop_blockmap_desc, (VOPFUNC)err_blockmap }, /* blockmap */
- { (struct vnodeop_desc*)NULL, (int(*)())NULL }
+int(**fifo_vnodeop_p)(void *);
+const struct vnodeopv_entry_desc fifo_vnodeop_entries[] = {
+ { .opve_op = &vnop_default_desc, .opve_impl = (VOPFUNC)vn_default_error },
+ { .opve_op = &vnop_lookup_desc, .opve_impl = (VOPFUNC)fifo_lookup }, /* lookup */
+ { .opve_op = &vnop_create_desc, .opve_impl = (VOPFUNC)err_create }, /* create */
+ { .opve_op = &vnop_mknod_desc, .opve_impl = (VOPFUNC)err_mknod }, /* mknod */
+ { .opve_op = &vnop_open_desc, .opve_impl = (VOPFUNC)fifo_open }, /* open */
+ { .opve_op = &vnop_close_desc, .opve_impl = (VOPFUNC)fifo_close }, /* close */
+ { .opve_op = &vnop_access_desc, .opve_impl = (VOPFUNC)fifo_access }, /* access */
+ { .opve_op = &vnop_getattr_desc, .opve_impl = (VOPFUNC)fifo_getattr }, /* getattr */
+ { .opve_op = &vnop_setattr_desc, .opve_impl = (VOPFUNC)fifo_setattr }, /* setattr */
+ { .opve_op = &vnop_read_desc, .opve_impl = (VOPFUNC)fifo_read }, /* read */
+ { .opve_op = &vnop_write_desc, .opve_impl = (VOPFUNC)fifo_write }, /* write */
+ { .opve_op = &vnop_ioctl_desc, .opve_impl = (VOPFUNC)fifo_ioctl }, /* ioctl */
+ { .opve_op = &vnop_select_desc, .opve_impl = (VOPFUNC)fifo_select }, /* select */
+ { .opve_op = &vnop_revoke_desc, .opve_impl = (VOPFUNC)fifo_revoke }, /* revoke */
+ { .opve_op = &vnop_mmap_desc, .opve_impl = (VOPFUNC)err_mmap }, /* mmap */
+ { .opve_op = &vnop_fsync_desc, .opve_impl = (VOPFUNC)fifo_fsync }, /* fsync */
+ { .opve_op = &vnop_remove_desc, .opve_impl = (VOPFUNC)err_remove }, /* remove */
+ { .opve_op = &vnop_link_desc, .opve_impl = (VOPFUNC)err_link }, /* link */
+ { .opve_op = &vnop_rename_desc, .opve_impl = (VOPFUNC)err_rename }, /* rename */
+ { .opve_op = &vnop_mkdir_desc, .opve_impl = (VOPFUNC)err_mkdir }, /* mkdir */
+ { .opve_op = &vnop_rmdir_desc, .opve_impl = (VOPFUNC)err_rmdir }, /* rmdir */
+ { .opve_op = &vnop_symlink_desc, .opve_impl = (VOPFUNC)err_symlink }, /* symlink */
+ { .opve_op = &vnop_readdir_desc, .opve_impl = (VOPFUNC)err_readdir }, /* readdir */
+ { .opve_op = &vnop_readlink_desc, .opve_impl = (VOPFUNC)err_readlink }, /* readlink */
+ { .opve_op = &vnop_inactive_desc, .opve_impl = (VOPFUNC)fifo_inactive }, /* inactive */
+ { .opve_op = &vnop_reclaim_desc, .opve_impl = (VOPFUNC)fifo_reclaim }, /* reclaim */
+ { .opve_op = &vnop_strategy_desc, .opve_impl = (VOPFUNC)err_strategy }, /* strategy */
+ { .opve_op = &vnop_pathconf_desc, .opve_impl = (VOPFUNC)fifo_pathconf }, /* pathconf */
+ { .opve_op = &vnop_advlock_desc, .opve_impl = (VOPFUNC)fifo_advlock }, /* advlock */
+ { .opve_op = &vnop_bwrite_desc, .opve_impl = (VOPFUNC)fifo_bwrite }, /* bwrite */
+ { .opve_op = &vnop_pagein_desc, .opve_impl = (VOPFUNC)err_pagein }, /* Pagein */
+ { .opve_op = &vnop_pageout_desc, .opve_impl = (VOPFUNC)err_pageout }, /* Pageout */
+ { .opve_op = &vnop_copyfile_desc, .opve_impl = (VOPFUNC)err_copyfile }, /* Copyfile */
+ { .opve_op = &vnop_blktooff_desc, .opve_impl = (VOPFUNC)err_blktooff }, /* blktooff */
+ { .opve_op = &vnop_offtoblk_desc, .opve_impl = (VOPFUNC)err_offtoblk }, /* offtoblk */
+ { .opve_op = &vnop_blockmap_desc, .opve_impl = (VOPFUNC)err_blockmap }, /* blockmap */
+ { .opve_op = (struct vnodeop_desc*)NULL, .opve_impl = (int (*)(void *))NULL }
};
-struct vnodeopv_desc fifo_vnodeop_opv_desc =
- { &fifo_vnodeop_p, fifo_vnodeop_entries };
+const struct vnodeopv_desc fifo_vnodeop_opv_desc =
+{ .opv_desc_vector_p = &fifo_vnodeop_p, .opv_desc_ops = fifo_vnodeop_entries };
/*
* Trivial lookup routine that always fails.
*/
/* ARGSUSED */
int
-fifo_lookup(ap)
- struct vnop_lookup_args /* {
- struct vnode * a_dvp;
- struct vnode ** a_vpp;
- struct componentname * a_cnp;
- vfs_context_t a_context;
- } */ *ap;
+fifo_lookup(struct vnop_lookup_args *ap)
{
-
*ap->a_vpp = NULL;
- return (ENOTDIR);
+ return ENOTDIR;
}
/*
*/
/* ARGSUSED */
int
-fifo_open(ap)
- struct vnop_open_args /* {
- struct vnode *a_vp;
- int a_mode;
- vfs_context_t a_context;
- } */ *ap;
+fifo_open(struct vnop_open_args *ap)
{
struct vnode *vp = ap->a_vp;
struct fifoinfo *fip;
fip = vp->v_fifoinfo;
- if (fip == (struct fifoinfo *)0)
+ if (fip == (struct fifoinfo *)0) {
panic("fifo_open with no fifoinfo");
+ }
if ((fip->fi_flags & FIFO_CREATED) == 0) {
if (fip->fi_flags & FIFO_INCREATE) {
- fip->fi_flags |= FIFO_CREATEWAIT;
- error = msleep(&fip->fi_flags, &vp->v_lock, PRIBIO | PCATCH, "fifocreatewait", 0);
+ fip->fi_flags |= FIFO_CREATEWAIT;
+ error = msleep(&fip->fi_flags, &vp->v_lock, PRIBIO | PCATCH, "fifocreatewait", NULL);
if (error) {
vnode_unlock(vp);
- return(error);
+ return error;
}
goto retry;
} else {
- fip->fi_flags |= FIFO_INCREATE;
+ fip->fi_flags |= FIFO_INCREATE;
vnode_unlock(vp);
- if ( (error = socreate(AF_LOCAL, &rso, SOCK_STREAM, 0)) ) {
- goto bad1;
+ if ((error = socreate(AF_LOCAL, &rso, SOCK_STREAM, 0))) {
+ goto bad1;
}
- fip->fi_readsock = rso;
- if ( (error = socreate(AF_LOCAL, &wso, SOCK_STREAM, 0)) ) {
+ if ((error = socreate(AF_LOCAL, &wso, SOCK_STREAM, 0))) {
(void)soclose(rso);
- goto bad1;
+ goto bad1;
}
- fip->fi_writesock = wso;
- if ( (error = soconnect2(wso, rso)) ) {
+ if ((error = soconnect2(wso, rso))) {
(void)soclose(wso);
(void)soclose(rso);
- goto bad1;
+ goto bad1;
}
fip->fi_readers = fip->fi_writers = 0;
- socket_lock(wso, 1);
+ /* Lock ordering between wso and rso does not matter here
+ * because they are just created and no one has a reference to them
+ */
+ socket_lock(wso, 1);
wso->so_state |= SS_CANTRCVMORE;
wso->so_snd.sb_lowat = PIPE_BUF;
-#if 0
- /* Because all the unp is protected by single mutex
- * doing it in two step may actually cause problems
- * as it opens up window between the drop and acquire
- */
- socket_unlock(wso, 1);
+ socket_unlock(wso, 1);
- socket_lock(rso, 1);
-#endif
+ socket_lock(rso, 1);
rso->so_state |= SS_CANTSENDMORE;
- socket_unlock(wso, 1);
+ socket_unlock(rso, 1);
vnode_lock(vp);
+ fip->fi_readsock = rso;
+ fip->fi_writesock = wso;
+
fip->fi_flags |= FIFO_CREATED;
fip->fi_flags &= ~FIFO_INCREATE;
-
+
if ((fip->fi_flags & FIFO_CREATEWAIT)) {
fip->fi_flags &= ~FIFO_CREATEWAIT;
wakeup(&fip->fi_flags);
fip->fi_writesock->so_state &= ~SS_CANTSENDMORE;
socket_unlock(fip->fi_writesock, 1);
- if (fip->fi_writers > 0)
+ if (fip->fi_writers > 0) {
wakeup((caddr_t)&fip->fi_writers);
+ }
}
}
if (ap->a_mode & FWRITE) {
socket_lock(fip->fi_readsock, 1);
fip->fi_readsock->so_state &= ~SS_CANTRCVMORE;
socket_unlock(fip->fi_readsock, 1);
-
- if (fip->fi_readers > 0)
+
+ if (fip->fi_readers > 0) {
wakeup((caddr_t)&fip->fi_readers);
+ }
}
}
if ((ap->a_mode & FREAD) && (ap->a_mode & O_NONBLOCK) == 0) {
if (fip->fi_writers == 0) {
error = msleep((caddr_t)&fip->fi_readers, &vp->v_lock,
- PCATCH | PSOCK, "fifoor", 0);
- if (error)
+ PCATCH | PSOCK, "fifoor", NULL);
+ if (error) {
goto bad;
+ }
if (fip->fi_readers == 1) {
- if (fip->fi_writers > 0)
+ if (fip->fi_writers > 0) {
wakeup((caddr_t)&fip->fi_writers);
+ }
}
}
}
if (ap->a_mode & FWRITE) {
if (ap->a_mode & O_NONBLOCK) {
if (fip->fi_readers == 0) {
- error = ENXIO;
- goto bad;
+ error = ENXIO;
+ goto bad;
}
} else {
if (fip->fi_readers == 0) {
- error = msleep((caddr_t)&fip->fi_writers,&vp->v_lock,
- PCATCH | PSOCK, "fifoow", 0);
- if (error)
+ error = msleep((caddr_t)&fip->fi_writers, &vp->v_lock,
+ PCATCH | PSOCK, "fifoow", NULL);
+ if (error) {
goto bad;
+ }
if (fip->fi_writers == 1) {
- if (fip->fi_readers > 0)
+ if (fip->fi_readers > 0) {
wakeup((caddr_t)&fip->fi_readers);
+ }
}
}
}
}
vnode_unlock(vp);
- return (0);
+ return 0;
bad:
fifo_close_internal(vp, ap->a_mode, ap->a_context, 1);
vnode_unlock(vp);
- return (error);
+ return error;
bad1:
vnode_lock(vp);
fip->fi_flags &= ~FIFO_INCREATE;
-
+
if ((fip->fi_flags & FIFO_CREATEWAIT)) {
fip->fi_flags &= ~FIFO_CREATEWAIT;
wakeup(&fip->fi_flags);
}
vnode_unlock(vp);
- return (error);
+ return error;
}
/*
* Vnode op for read
*/
int
-fifo_read(ap)
- struct vnop_read_args /* {
- struct vnode *a_vp;
- struct uio *a_uio;
- int a_ioflag;
- vfs_context_t a_context;
- } */ *ap;
+fifo_read(struct vnop_read_args *ap)
{
struct uio *uio = ap->a_uio;
struct socket *rso = ap->a_vp->v_fifoinfo->fi_readsock;
- int error, startresid;
+ user_ssize_t startresid;
+ int error;
int rflags;
#if DIAGNOSTIC
- if (uio->uio_rw != UIO_READ)
+ if (uio->uio_rw != UIO_READ) {
panic("fifo_read mode");
+ }
#endif
- if (uio_resid(uio) == 0)
- return (0);
+ if (uio_resid(uio) == 0) {
+ return 0;
+ }
rflags = (ap->a_ioflag & IO_NDELAY) ? MSG_NBIO : 0;
- // LP64todo - fix this!
startresid = uio_resid(uio);
- /* fifo conformance - if we have a reader open on the fifo but no
- * writers then we need to make sure we do not block. We do that by
+ /* fifo conformance - if we have a reader open on the fifo but no
+ * writers then we need to make sure we do not block. We do that by
* checking the receive buffer and if empty set error to EWOULDBLOCK.
* If error is set to EWOULDBLOCK we skip the call into soreceive
*/
/* skip soreceive to avoid blocking when we have no writers */
if (error != EWOULDBLOCK) {
error = soreceive(rso, (struct sockaddr **)0, uio, (struct mbuf **)0,
- (struct mbuf **)0, &rflags);
- }
- else {
+ (struct mbuf **)0, &rflags);
+ if (error == 0) {
+ lock_vnode_and_post(ap->a_vp, 0);
+ }
+ } else {
/* clear EWOULDBLOCK and return EOF (zero) */
error = 0;
}
rso->so_state &= ~SS_CANTRCVMORE;
socket_unlock(rso, 1);
}
- return (error);
+ return error;
}
/*
* Vnode op for write
*/
int
-fifo_write(ap)
- struct vnop_write_args /* {
- struct vnode *a_vp;
- struct uio *a_uio;
- int a_ioflag;
- vfs_context_t a_context;
- } */ *ap;
+fifo_write(struct vnop_write_args *ap)
{
struct socket *wso = ap->a_vp->v_fifoinfo->fi_writesock;
int error;
#if DIAGNOSTIC
- if (ap->a_uio->uio_rw != UIO_WRITE)
+ if (ap->a_uio->uio_rw != UIO_WRITE) {
panic("fifo_write mode");
+ }
#endif
- error = sosend(wso, (struct sockaddr *)0, ap->a_uio, 0,
- (struct mbuf *)0, (ap->a_ioflag & IO_NDELAY) ? MSG_NBIO : 0);
+ error = sosend(wso, (struct sockaddr *)0, ap->a_uio, NULL,
+ (struct mbuf *)0, (ap->a_ioflag & IO_NDELAY) ? MSG_NBIO : 0);
+ if (error == 0) {
+ lock_vnode_and_post(ap->a_vp, 0);
+ }
- return (error);
+ return error;
}
/*
* Device ioctl operation.
*/
int
-fifo_ioctl(ap)
- struct vnop_ioctl_args /* {
- struct vnode *a_vp;
- int a_command;
- caddr_t a_data;
- int a_fflag;
- vfs_context_t a_context;
- } */ *ap;
+fifo_ioctl(struct vnop_ioctl_args *ap)
{
- struct proc *p = vfs_context_proc(ap->a_context);
struct fileproc filetmp;
struct fileglob filefg;
int error;
- if (ap->a_command == FIONBIO)
- return (0);
+ if (ap->a_command == FIONBIO) {
+ return 0;
+ }
bzero(&filetmp, sizeof(struct fileproc));
filetmp.f_fglob = &filefg;
if (ap->a_fflag & FREAD) {
filetmp.f_fglob->fg_data = (caddr_t)ap->a_vp->v_fifoinfo->fi_readsock;
- error = soo_ioctl(&filetmp, ap->a_command, ap->a_data, p);
- if (error)
- return (error);
+ error = soo_ioctl(&filetmp, ap->a_command, ap->a_data, ap->a_context);
+ if (error) {
+ return error;
+ }
}
if (ap->a_fflag & FWRITE) {
filetmp.f_fglob->fg_data = (caddr_t)ap->a_vp->v_fifoinfo->fi_writesock;
- error = soo_ioctl(&filetmp, ap->a_command, ap->a_data, p);
- if (error)
- return (error);
+ error = soo_ioctl(&filetmp, ap->a_command, ap->a_data, ap->a_context);
+ if (error) {
+ return error;
+ }
}
- return (0);
+ return 0;
}
int
-fifo_select(ap)
- struct vnop_select_args /* {
- struct vnode *a_vp;
- int a_which;
- int a_fflags;
- void * a_wql;
- vfs_context_t a_context;
- } */ *ap;
+fifo_select(struct vnop_select_args *ap)
{
- struct proc *p = vfs_context_proc(ap->a_context);
struct fileproc filetmp;
struct fileglob filefg;
int ready;
filetmp.f_fglob = &filefg;
if (ap->a_which & FREAD) {
filetmp.f_fglob->fg_data = (caddr_t)ap->a_vp->v_fifoinfo->fi_readsock;
- ready = soo_select(&filetmp, ap->a_which, ap->a_wql, p);
- if (ready)
- return (ready);
+ ready = soo_select(&filetmp, ap->a_which, ap->a_wql, ap->a_context);
+ if (ready) {
+ return ready;
+ }
}
if (ap->a_which & FWRITE) {
filetmp.f_fglob->fg_data = (caddr_t)ap->a_vp->v_fifoinfo->fi_writesock;
- ready = soo_select(&filetmp, ap->a_which, ap->a_wql, p);
- if (ready)
- return (ready);
+ ready = soo_select(&filetmp, ap->a_which, ap->a_wql, ap->a_context);
+ if (ready) {
+ return ready;
+ }
}
- return (0);
+ return 0;
}
int
fifo_inactive(__unused struct vnop_inactive_args *ap)
{
- return (0);
+ return 0;
}
* Device close routine
*/
int
-fifo_close(ap)
- struct vnop_close_args /* {
- struct vnode *a_vp;
- int a_fflag;
- vfs_context_t a_context;
- } */ *ap;
+fifo_close(struct vnop_close_args *ap)
{
return fifo_close_internal(ap->a_vp, ap->a_fflag, ap->a_context, 0);
}
int
fifo_close_internal(vnode_t vp, int fflag, __unused vfs_context_t context, int locked)
{
- register struct fifoinfo *fip = vp->v_fifoinfo;
+ struct fifoinfo *fip = vp->v_fifoinfo;
int error1, error2;
struct socket *rso;
struct socket *wso;
- if (!locked)
+ if (!locked) {
vnode_lock(vp);
+ }
if ((fip->fi_flags & FIFO_CREATED) == 0) {
- if (!locked)
+ if (!locked) {
vnode_unlock(vp);
- return(0);
-
+ }
+ return 0;
}
-
+
if (fflag & FREAD) {
fip->fi_readers--;
- if (fip->fi_readers == 0){
+ if (fip->fi_readers == 0) {
socket_lock(fip->fi_writesock, 1);
socantsendmore(fip->fi_writesock);
socket_unlock(fip->fi_writesock, 1);
}
#if 0
if (vnode_isinuse_locked(vp, 0, 1)) {
- if (!locked)
+ if (!locked) {
vnode_unlock(vp);
- return (0);
+ }
+ return 0;
}
#endif
if (fip->fi_writers || fip->fi_readers) {
- if (!locked)
+ if (!locked) {
vnode_unlock(vp);
- return (0);
+ }
+ return 0;
}
wso = fip->fi_writesock;
rso = fip->fi_readsock;
- fip->fi_readsock = 0;
- fip->fi_writesock = 0;
+ fip->fi_readsock = NULL;
+ fip->fi_writesock = NULL;
fip->fi_flags &= ~FIFO_CREATED;
- if (!locked)
+ if (!locked) {
vnode_unlock(vp);
+ }
error1 = soclose(rso);
error2 = soclose(wso);
- if (error1)
- return (error1);
- return (error2);
+ if (error1) {
+ return error1;
+ }
+ return error2;
}
-
/*
* Print out internal contents of a fifo vnode.
*/
void
-fifo_printinfo(vp)
- struct vnode *vp;
+fifo_printinfo(struct vnode *vp)
{
- register struct fifoinfo *fip = vp->v_fifoinfo;
+ struct fifoinfo *fip = vp->v_fifoinfo;
- printf(", fifo with %d readers and %d writers",
- fip->fi_readers, fip->fi_writers);
+ printf(", fifo with %ld readers and %ld writers",
+ fip->fi_readers, fip->fi_writers);
}
/*
* Return POSIX pathconf information applicable to fifo's.
*/
int
-fifo_pathconf(ap)
- struct vnop_pathconf_args /* {
- struct vnode *a_vp;
- int a_name;
- int *a_retval;
- vfs_context_t a_context;
- } */ *ap;
+fifo_pathconf(struct vnop_pathconf_args *ap)
{
-
switch (ap->a_name) {
case _PC_LINK_MAX:
*ap->a_retval = LINK_MAX;
- return (0);
+ return 0;
case _PC_PIPE_BUF:
*ap->a_retval = PIPE_BUF;
- return (0);
+ return 0;
case _PC_CHOWN_RESTRICTED:
- *ap->a_retval = 1;
- return (0);
+ *ap->a_retval = 200112; /* _POSIX_CHOWN_RESTRICTED */
+ return 0;
default:
- return (EINVAL);
+ return EINVAL;
}
/* NOTREACHED */
}
int
fifo_ebadf(__unused void *dummy)
{
-
- return (EBADF);
+ return EBADF;
}
/*
int
fifo_advlock(__unused struct vnop_advlock_args *ap)
{
+ return ENOTSUP;
+}
+
- return (ENOTSUP);
+/* You'd certainly better have an iocount on the vnode! */
+int
+fifo_freespace(struct vnode *vp, long *count)
+{
+ struct socket *rsock;
+ rsock = vp->v_fifoinfo->fi_readsock;
+ socket_lock(rsock, 1);
+ *count = sbspace(&rsock->so_rcv);
+ socket_unlock(rsock, 1);
+ return 0;
}
+int
+fifo_charcount(struct vnode *vp, int *count)
+{
+ int mcount;
+ int err = sock_ioctl(vp->v_fifoinfo->fi_readsock, FIONREAD, (void*)&mcount);
+ if (err == 0) {
+ *count = mcount;
+ }
+ return err;
+}
projects / apple / xnu.git / blobdiff