10f57f392f
is 0. Without this change it was sleeping for one tick. Maybe not a big deal, but it makes share/dtrace/blocking script to report that. Reviewed by: jhb Differential Revision: https://reviews.freebsd.org/D3814 Sponsored by: Wheel Systems, http://wheelsystems.com
3082 lines
77 KiB
C
3082 lines
77 KiB
C
/*-
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* Copyright (c) 1997 John S. Dyson. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. John S. Dyson's name may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* DISCLAIMER: This code isn't warranted to do anything useful. Anything
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* bad that happens because of using this software isn't the responsibility
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* of the author. This software is distributed AS-IS.
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*/
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/*
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* This file contains support for the POSIX 1003.1B AIO/LIO facility.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_compat.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/capsicum.h>
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#include <sys/eventhandler.h>
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#include <sys/sysproto.h>
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#include <sys/filedesc.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/kthread.h>
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#include <sys/fcntl.h>
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#include <sys/file.h>
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#include <sys/limits.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/unistd.h>
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#include <sys/posix4.h>
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#include <sys/proc.h>
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#include <sys/resourcevar.h>
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#include <sys/signalvar.h>
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#include <sys/protosw.h>
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#include <sys/rwlock.h>
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#include <sys/sema.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/syscall.h>
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#include <sys/sysent.h>
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#include <sys/sysctl.h>
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#include <sys/sx.h>
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#include <sys/taskqueue.h>
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#include <sys/vnode.h>
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#include <sys/conf.h>
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#include <sys/event.h>
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#include <sys/mount.h>
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#include <geom/geom.h>
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#include <machine/atomic.h>
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#include <vm/vm.h>
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#include <vm/vm_page.h>
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#include <vm/vm_extern.h>
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#include <vm/pmap.h>
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#include <vm/vm_map.h>
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#include <vm/vm_object.h>
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#include <vm/uma.h>
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#include <sys/aio.h>
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#include "opt_vfs_aio.h"
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/*
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* Counter for allocating reference ids to new jobs. Wrapped to 1 on
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* overflow. (XXX will be removed soon.)
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*/
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static u_long jobrefid;
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/*
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* Counter for aio_fsync.
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*/
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static uint64_t jobseqno;
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#define JOBST_NULL 0
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#define JOBST_JOBQSOCK 1
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#define JOBST_JOBQGLOBAL 2
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#define JOBST_JOBRUNNING 3
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#define JOBST_JOBFINISHED 4
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#define JOBST_JOBQBUF 5
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#define JOBST_JOBQSYNC 6
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#ifndef MAX_AIO_PER_PROC
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#define MAX_AIO_PER_PROC 32
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#endif
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#ifndef MAX_AIO_QUEUE_PER_PROC
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#define MAX_AIO_QUEUE_PER_PROC 256 /* Bigger than AIO_LISTIO_MAX */
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#endif
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#ifndef MAX_AIO_PROCS
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#define MAX_AIO_PROCS 32
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#endif
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#ifndef MAX_AIO_QUEUE
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#define MAX_AIO_QUEUE 1024 /* Bigger than AIO_LISTIO_MAX */
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#endif
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#ifndef TARGET_AIO_PROCS
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#define TARGET_AIO_PROCS 4
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#endif
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#ifndef MAX_BUF_AIO
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#define MAX_BUF_AIO 16
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#endif
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#ifndef AIOD_TIMEOUT_DEFAULT
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#define AIOD_TIMEOUT_DEFAULT (10 * hz)
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#endif
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#ifndef AIOD_LIFETIME_DEFAULT
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#define AIOD_LIFETIME_DEFAULT (30 * hz)
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#endif
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FEATURE(aio, "Asynchronous I/O");
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static MALLOC_DEFINE(M_LIO, "lio", "listio aio control block list");
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static SYSCTL_NODE(_vfs, OID_AUTO, aio, CTLFLAG_RW, 0, "Async IO management");
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static int max_aio_procs = MAX_AIO_PROCS;
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SYSCTL_INT(_vfs_aio, OID_AUTO, max_aio_procs,
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CTLFLAG_RW, &max_aio_procs, 0,
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"Maximum number of kernel threads to use for handling async IO ");
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static int num_aio_procs = 0;
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SYSCTL_INT(_vfs_aio, OID_AUTO, num_aio_procs,
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CTLFLAG_RD, &num_aio_procs, 0,
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"Number of presently active kernel threads for async IO");
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/*
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* The code will adjust the actual number of AIO processes towards this
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* number when it gets a chance.
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*/
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static int target_aio_procs = TARGET_AIO_PROCS;
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SYSCTL_INT(_vfs_aio, OID_AUTO, target_aio_procs, CTLFLAG_RW, &target_aio_procs,
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0, "Preferred number of ready kernel threads for async IO");
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static int max_queue_count = MAX_AIO_QUEUE;
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SYSCTL_INT(_vfs_aio, OID_AUTO, max_aio_queue, CTLFLAG_RW, &max_queue_count, 0,
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"Maximum number of aio requests to queue, globally");
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static int num_queue_count = 0;
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SYSCTL_INT(_vfs_aio, OID_AUTO, num_queue_count, CTLFLAG_RD, &num_queue_count, 0,
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"Number of queued aio requests");
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static int num_buf_aio = 0;
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SYSCTL_INT(_vfs_aio, OID_AUTO, num_buf_aio, CTLFLAG_RD, &num_buf_aio, 0,
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"Number of aio requests presently handled by the buf subsystem");
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/* Number of async I/O thread in the process of being started */
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/* XXX This should be local to aio_aqueue() */
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static int num_aio_resv_start = 0;
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static int aiod_timeout;
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SYSCTL_INT(_vfs_aio, OID_AUTO, aiod_timeout, CTLFLAG_RW, &aiod_timeout, 0,
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"Timeout value for synchronous aio operations");
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static int aiod_lifetime;
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SYSCTL_INT(_vfs_aio, OID_AUTO, aiod_lifetime, CTLFLAG_RW, &aiod_lifetime, 0,
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"Maximum lifetime for idle aiod");
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static int unloadable = 0;
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SYSCTL_INT(_vfs_aio, OID_AUTO, unloadable, CTLFLAG_RW, &unloadable, 0,
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"Allow unload of aio (not recommended)");
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static int max_aio_per_proc = MAX_AIO_PER_PROC;
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SYSCTL_INT(_vfs_aio, OID_AUTO, max_aio_per_proc, CTLFLAG_RW, &max_aio_per_proc,
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0, "Maximum active aio requests per process (stored in the process)");
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static int max_aio_queue_per_proc = MAX_AIO_QUEUE_PER_PROC;
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SYSCTL_INT(_vfs_aio, OID_AUTO, max_aio_queue_per_proc, CTLFLAG_RW,
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&max_aio_queue_per_proc, 0,
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"Maximum queued aio requests per process (stored in the process)");
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static int max_buf_aio = MAX_BUF_AIO;
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SYSCTL_INT(_vfs_aio, OID_AUTO, max_buf_aio, CTLFLAG_RW, &max_buf_aio, 0,
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"Maximum buf aio requests per process (stored in the process)");
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typedef struct oaiocb {
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int aio_fildes; /* File descriptor */
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off_t aio_offset; /* File offset for I/O */
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volatile void *aio_buf; /* I/O buffer in process space */
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size_t aio_nbytes; /* Number of bytes for I/O */
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struct osigevent aio_sigevent; /* Signal to deliver */
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int aio_lio_opcode; /* LIO opcode */
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int aio_reqprio; /* Request priority -- ignored */
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struct __aiocb_private _aiocb_private;
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} oaiocb_t;
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/*
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* Below is a key of locks used to protect each member of struct aiocblist
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* aioliojob and kaioinfo and any backends.
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*
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* * - need not protected
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* a - locked by kaioinfo lock
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* b - locked by backend lock, the backend lock can be null in some cases,
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* for example, BIO belongs to this type, in this case, proc lock is
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* reused.
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* c - locked by aio_job_mtx, the lock for the generic file I/O backend.
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*/
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/*
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* Current, there is only two backends: BIO and generic file I/O.
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* socket I/O is served by generic file I/O, this is not a good idea, since
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* disk file I/O and any other types without O_NONBLOCK flag can block daemon
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* threads, if there is no thread to serve socket I/O, the socket I/O will be
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* delayed too long or starved, we should create some threads dedicated to
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* sockets to do non-blocking I/O, same for pipe and fifo, for these I/O
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* systems we really need non-blocking interface, fiddling O_NONBLOCK in file
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* structure is not safe because there is race between userland and aio
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* daemons.
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*/
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struct aiocblist {
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TAILQ_ENTRY(aiocblist) list; /* (b) internal list of for backend */
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TAILQ_ENTRY(aiocblist) plist; /* (a) list of jobs for each backend */
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TAILQ_ENTRY(aiocblist) allist; /* (a) list of all jobs in proc */
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int jobflags; /* (a) job flags */
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int jobstate; /* (b) job state */
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int inputcharge; /* (*) input blockes */
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int outputcharge; /* (*) output blockes */
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struct bio *bp; /* (*) BIO backend BIO pointer */
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struct buf *pbuf; /* (*) BIO backend buffer pointer */
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struct vm_page *pages[btoc(MAXPHYS)+1]; /* BIO backend pages */
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int npages; /* BIO backend number of pages */
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struct proc *userproc; /* (*) user process */
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struct ucred *cred; /* (*) active credential when created */
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struct file *fd_file; /* (*) pointer to file structure */
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struct aioliojob *lio; /* (*) optional lio job */
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struct aiocb *uuaiocb; /* (*) pointer in userspace of aiocb */
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struct knlist klist; /* (a) list of knotes */
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struct aiocb uaiocb; /* (*) kernel I/O control block */
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ksiginfo_t ksi; /* (a) realtime signal info */
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uint64_t seqno; /* (*) job number */
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int pending; /* (a) number of pending I/O, aio_fsync only */
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};
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/* jobflags */
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#define AIOCBLIST_DONE 0x01
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#define AIOCBLIST_BUFDONE 0x02
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#define AIOCBLIST_RUNDOWN 0x04
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#define AIOCBLIST_CHECKSYNC 0x08
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/*
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* AIO process info
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*/
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#define AIOP_FREE 0x1 /* proc on free queue */
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struct aiothreadlist {
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int aiothreadflags; /* (c) AIO proc flags */
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TAILQ_ENTRY(aiothreadlist) list; /* (c) list of processes */
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struct thread *aiothread; /* (*) the AIO thread */
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};
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/*
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* data-structure for lio signal management
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*/
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struct aioliojob {
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int lioj_flags; /* (a) listio flags */
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int lioj_count; /* (a) listio flags */
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int lioj_finished_count; /* (a) listio flags */
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struct sigevent lioj_signal; /* (a) signal on all I/O done */
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TAILQ_ENTRY(aioliojob) lioj_list; /* (a) lio list */
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struct knlist klist; /* (a) list of knotes */
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ksiginfo_t lioj_ksi; /* (a) Realtime signal info */
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};
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#define LIOJ_SIGNAL 0x1 /* signal on all done (lio) */
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#define LIOJ_SIGNAL_POSTED 0x2 /* signal has been posted */
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#define LIOJ_KEVENT_POSTED 0x4 /* kevent triggered */
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/*
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* per process aio data structure
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*/
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struct kaioinfo {
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struct mtx kaio_mtx; /* the lock to protect this struct */
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int kaio_flags; /* (a) per process kaio flags */
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int kaio_maxactive_count; /* (*) maximum number of AIOs */
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int kaio_active_count; /* (c) number of currently used AIOs */
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int kaio_qallowed_count; /* (*) maxiumu size of AIO queue */
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int kaio_count; /* (a) size of AIO queue */
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int kaio_ballowed_count; /* (*) maximum number of buffers */
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int kaio_buffer_count; /* (a) number of physio buffers */
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TAILQ_HEAD(,aiocblist) kaio_all; /* (a) all AIOs in the process */
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TAILQ_HEAD(,aiocblist) kaio_done; /* (a) done queue for process */
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TAILQ_HEAD(,aioliojob) kaio_liojoblist; /* (a) list of lio jobs */
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TAILQ_HEAD(,aiocblist) kaio_jobqueue; /* (a) job queue for process */
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TAILQ_HEAD(,aiocblist) kaio_bufqueue; /* (a) buffer job queue for process */
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TAILQ_HEAD(,aiocblist) kaio_sockqueue; /* (a) queue for aios waiting on sockets,
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* NOT USED YET.
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*/
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TAILQ_HEAD(,aiocblist) kaio_syncqueue; /* (a) queue for aio_fsync */
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struct task kaio_task; /* (*) task to kick aio threads */
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};
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#define AIO_LOCK(ki) mtx_lock(&(ki)->kaio_mtx)
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#define AIO_UNLOCK(ki) mtx_unlock(&(ki)->kaio_mtx)
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#define AIO_LOCK_ASSERT(ki, f) mtx_assert(&(ki)->kaio_mtx, (f))
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#define AIO_MTX(ki) (&(ki)->kaio_mtx)
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#define KAIO_RUNDOWN 0x1 /* process is being run down */
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#define KAIO_WAKEUP 0x2 /* wakeup process when there is a significant event */
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/*
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* Operations used to interact with userland aio control blocks.
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* Different ABIs provide their own operations.
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*/
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struct aiocb_ops {
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int (*copyin)(struct aiocb *ujob, struct aiocb *kjob);
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long (*fetch_status)(struct aiocb *ujob);
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long (*fetch_error)(struct aiocb *ujob);
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int (*store_status)(struct aiocb *ujob, long status);
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int (*store_error)(struct aiocb *ujob, long error);
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int (*store_kernelinfo)(struct aiocb *ujob, long jobref);
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int (*store_aiocb)(struct aiocb **ujobp, struct aiocb *ujob);
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};
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static TAILQ_HEAD(,aiothreadlist) aio_freeproc; /* (c) Idle daemons */
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static struct sema aio_newproc_sem;
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static struct mtx aio_job_mtx;
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static struct mtx aio_sock_mtx;
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static TAILQ_HEAD(,aiocblist) aio_jobs; /* (c) Async job list */
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static struct unrhdr *aiod_unr;
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void aio_init_aioinfo(struct proc *p);
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static int aio_onceonly(void);
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static int aio_free_entry(struct aiocblist *aiocbe);
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static void aio_process_rw(struct aiocblist *aiocbe);
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static void aio_process_sync(struct aiocblist *aiocbe);
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static void aio_process_mlock(struct aiocblist *aiocbe);
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static int aio_newproc(int *);
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int aio_aqueue(struct thread *td, struct aiocb *job,
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struct aioliojob *lio, int type, struct aiocb_ops *ops);
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static void aio_physwakeup(struct bio *bp);
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static void aio_proc_rundown(void *arg, struct proc *p);
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static void aio_proc_rundown_exec(void *arg, struct proc *p, struct image_params *imgp);
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static int aio_qphysio(struct proc *p, struct aiocblist *iocb);
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static void aio_daemon(void *param);
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static void aio_swake_cb(struct socket *, struct sockbuf *);
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static int aio_unload(void);
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static void aio_bio_done_notify(struct proc *userp, struct aiocblist *aiocbe, int type);
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#define DONE_BUF 1
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#define DONE_QUEUE 2
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static int aio_kick(struct proc *userp);
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static void aio_kick_nowait(struct proc *userp);
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static void aio_kick_helper(void *context, int pending);
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static int filt_aioattach(struct knote *kn);
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static void filt_aiodetach(struct knote *kn);
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static int filt_aio(struct knote *kn, long hint);
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static int filt_lioattach(struct knote *kn);
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static void filt_liodetach(struct knote *kn);
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static int filt_lio(struct knote *kn, long hint);
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/*
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* Zones for:
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* kaio Per process async io info
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* aiop async io thread data
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* aiocb async io jobs
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* aiol list io job pointer - internal to aio_suspend XXX
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* aiolio list io jobs
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*/
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static uma_zone_t kaio_zone, aiop_zone, aiocb_zone, aiol_zone, aiolio_zone;
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/* kqueue filters for aio */
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static struct filterops aio_filtops = {
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.f_isfd = 0,
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.f_attach = filt_aioattach,
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.f_detach = filt_aiodetach,
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.f_event = filt_aio,
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};
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static struct filterops lio_filtops = {
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.f_isfd = 0,
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.f_attach = filt_lioattach,
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.f_detach = filt_liodetach,
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.f_event = filt_lio
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};
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static eventhandler_tag exit_tag, exec_tag;
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TASKQUEUE_DEFINE_THREAD(aiod_bio);
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/*
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* Main operations function for use as a kernel module.
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*/
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static int
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aio_modload(struct module *module, int cmd, void *arg)
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{
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int error = 0;
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switch (cmd) {
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case MOD_LOAD:
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aio_onceonly();
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break;
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case MOD_UNLOAD:
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error = aio_unload();
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break;
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case MOD_SHUTDOWN:
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break;
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default:
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error = EINVAL;
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break;
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}
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return (error);
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}
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static moduledata_t aio_mod = {
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"aio",
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&aio_modload,
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NULL
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};
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static struct syscall_helper_data aio_syscalls[] = {
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SYSCALL_INIT_HELPER(aio_cancel),
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SYSCALL_INIT_HELPER(aio_error),
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SYSCALL_INIT_HELPER(aio_fsync),
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SYSCALL_INIT_HELPER(aio_mlock),
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SYSCALL_INIT_HELPER(aio_read),
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SYSCALL_INIT_HELPER(aio_return),
|
|
SYSCALL_INIT_HELPER(aio_suspend),
|
|
SYSCALL_INIT_HELPER(aio_waitcomplete),
|
|
SYSCALL_INIT_HELPER(aio_write),
|
|
SYSCALL_INIT_HELPER(lio_listio),
|
|
SYSCALL_INIT_HELPER(oaio_read),
|
|
SYSCALL_INIT_HELPER(oaio_write),
|
|
SYSCALL_INIT_HELPER(olio_listio),
|
|
SYSCALL_INIT_LAST
|
|
};
|
|
|
|
#ifdef COMPAT_FREEBSD32
|
|
#include <sys/mount.h>
|
|
#include <sys/socket.h>
|
|
#include <compat/freebsd32/freebsd32.h>
|
|
#include <compat/freebsd32/freebsd32_proto.h>
|
|
#include <compat/freebsd32/freebsd32_signal.h>
|
|
#include <compat/freebsd32/freebsd32_syscall.h>
|
|
#include <compat/freebsd32/freebsd32_util.h>
|
|
|
|
static struct syscall_helper_data aio32_syscalls[] = {
|
|
SYSCALL32_INIT_HELPER(freebsd32_aio_return),
|
|
SYSCALL32_INIT_HELPER(freebsd32_aio_suspend),
|
|
SYSCALL32_INIT_HELPER(freebsd32_aio_cancel),
|
|
SYSCALL32_INIT_HELPER(freebsd32_aio_error),
|
|
SYSCALL32_INIT_HELPER(freebsd32_aio_fsync),
|
|
SYSCALL32_INIT_HELPER(freebsd32_aio_mlock),
|
|
SYSCALL32_INIT_HELPER(freebsd32_aio_read),
|
|
SYSCALL32_INIT_HELPER(freebsd32_aio_write),
|
|
SYSCALL32_INIT_HELPER(freebsd32_aio_waitcomplete),
|
|
SYSCALL32_INIT_HELPER(freebsd32_lio_listio),
|
|
SYSCALL32_INIT_HELPER(freebsd32_oaio_read),
|
|
SYSCALL32_INIT_HELPER(freebsd32_oaio_write),
|
|
SYSCALL32_INIT_HELPER(freebsd32_olio_listio),
|
|
SYSCALL_INIT_LAST
|
|
};
|
|
#endif
|
|
|
|
DECLARE_MODULE(aio, aio_mod,
|
|
SI_SUB_VFS, SI_ORDER_ANY);
|
|
MODULE_VERSION(aio, 1);
|
|
|
|
/*
|
|
* Startup initialization
|
|
*/
|
|
static int
|
|
aio_onceonly(void)
|
|
{
|
|
int error;
|
|
|
|
/* XXX: should probably just use so->callback */
|
|
aio_swake = &aio_swake_cb;
|
|
exit_tag = EVENTHANDLER_REGISTER(process_exit, aio_proc_rundown, NULL,
|
|
EVENTHANDLER_PRI_ANY);
|
|
exec_tag = EVENTHANDLER_REGISTER(process_exec, aio_proc_rundown_exec, NULL,
|
|
EVENTHANDLER_PRI_ANY);
|
|
kqueue_add_filteropts(EVFILT_AIO, &aio_filtops);
|
|
kqueue_add_filteropts(EVFILT_LIO, &lio_filtops);
|
|
TAILQ_INIT(&aio_freeproc);
|
|
sema_init(&aio_newproc_sem, 0, "aio_new_proc");
|
|
mtx_init(&aio_job_mtx, "aio_job", NULL, MTX_DEF);
|
|
mtx_init(&aio_sock_mtx, "aio_sock", NULL, MTX_DEF);
|
|
TAILQ_INIT(&aio_jobs);
|
|
aiod_unr = new_unrhdr(1, INT_MAX, NULL);
|
|
kaio_zone = uma_zcreate("AIO", sizeof(struct kaioinfo), NULL, NULL,
|
|
NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
|
|
aiop_zone = uma_zcreate("AIOP", sizeof(struct aiothreadlist), NULL,
|
|
NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
|
|
aiocb_zone = uma_zcreate("AIOCB", sizeof(struct aiocblist), NULL, NULL,
|
|
NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
|
|
aiol_zone = uma_zcreate("AIOL", AIO_LISTIO_MAX*sizeof(intptr_t) , NULL,
|
|
NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
|
|
aiolio_zone = uma_zcreate("AIOLIO", sizeof(struct aioliojob), NULL,
|
|
NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
|
|
aiod_timeout = AIOD_TIMEOUT_DEFAULT;
|
|
aiod_lifetime = AIOD_LIFETIME_DEFAULT;
|
|
jobrefid = 1;
|
|
async_io_version = _POSIX_VERSION;
|
|
p31b_setcfg(CTL_P1003_1B_AIO_LISTIO_MAX, AIO_LISTIO_MAX);
|
|
p31b_setcfg(CTL_P1003_1B_AIO_MAX, MAX_AIO_QUEUE);
|
|
p31b_setcfg(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, 0);
|
|
|
|
error = syscall_helper_register(aio_syscalls, SY_THR_STATIC_KLD);
|
|
if (error)
|
|
return (error);
|
|
#ifdef COMPAT_FREEBSD32
|
|
error = syscall32_helper_register(aio32_syscalls, SY_THR_STATIC_KLD);
|
|
if (error)
|
|
return (error);
|
|
#endif
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Callback for unload of AIO when used as a module.
|
|
*/
|
|
static int
|
|
aio_unload(void)
|
|
{
|
|
int error;
|
|
|
|
/*
|
|
* XXX: no unloads by default, it's too dangerous.
|
|
* perhaps we could do it if locked out callers and then
|
|
* did an aio_proc_rundown() on each process.
|
|
*
|
|
* jhb: aio_proc_rundown() needs to run on curproc though,
|
|
* so I don't think that would fly.
|
|
*/
|
|
if (!unloadable)
|
|
return (EOPNOTSUPP);
|
|
|
|
#ifdef COMPAT_FREEBSD32
|
|
syscall32_helper_unregister(aio32_syscalls);
|
|
#endif
|
|
syscall_helper_unregister(aio_syscalls);
|
|
|
|
error = kqueue_del_filteropts(EVFILT_AIO);
|
|
if (error)
|
|
return error;
|
|
error = kqueue_del_filteropts(EVFILT_LIO);
|
|
if (error)
|
|
return error;
|
|
async_io_version = 0;
|
|
aio_swake = NULL;
|
|
taskqueue_free(taskqueue_aiod_bio);
|
|
delete_unrhdr(aiod_unr);
|
|
uma_zdestroy(kaio_zone);
|
|
uma_zdestroy(aiop_zone);
|
|
uma_zdestroy(aiocb_zone);
|
|
uma_zdestroy(aiol_zone);
|
|
uma_zdestroy(aiolio_zone);
|
|
EVENTHANDLER_DEREGISTER(process_exit, exit_tag);
|
|
EVENTHANDLER_DEREGISTER(process_exec, exec_tag);
|
|
mtx_destroy(&aio_job_mtx);
|
|
mtx_destroy(&aio_sock_mtx);
|
|
sema_destroy(&aio_newproc_sem);
|
|
p31b_setcfg(CTL_P1003_1B_AIO_LISTIO_MAX, -1);
|
|
p31b_setcfg(CTL_P1003_1B_AIO_MAX, -1);
|
|
p31b_setcfg(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, -1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Init the per-process aioinfo structure. The aioinfo limits are set
|
|
* per-process for user limit (resource) management.
|
|
*/
|
|
void
|
|
aio_init_aioinfo(struct proc *p)
|
|
{
|
|
struct kaioinfo *ki;
|
|
|
|
ki = uma_zalloc(kaio_zone, M_WAITOK);
|
|
mtx_init(&ki->kaio_mtx, "aiomtx", NULL, MTX_DEF | MTX_NEW);
|
|
ki->kaio_flags = 0;
|
|
ki->kaio_maxactive_count = max_aio_per_proc;
|
|
ki->kaio_active_count = 0;
|
|
ki->kaio_qallowed_count = max_aio_queue_per_proc;
|
|
ki->kaio_count = 0;
|
|
ki->kaio_ballowed_count = max_buf_aio;
|
|
ki->kaio_buffer_count = 0;
|
|
TAILQ_INIT(&ki->kaio_all);
|
|
TAILQ_INIT(&ki->kaio_done);
|
|
TAILQ_INIT(&ki->kaio_jobqueue);
|
|
TAILQ_INIT(&ki->kaio_bufqueue);
|
|
TAILQ_INIT(&ki->kaio_liojoblist);
|
|
TAILQ_INIT(&ki->kaio_sockqueue);
|
|
TAILQ_INIT(&ki->kaio_syncqueue);
|
|
TASK_INIT(&ki->kaio_task, 0, aio_kick_helper, p);
|
|
PROC_LOCK(p);
|
|
if (p->p_aioinfo == NULL) {
|
|
p->p_aioinfo = ki;
|
|
PROC_UNLOCK(p);
|
|
} else {
|
|
PROC_UNLOCK(p);
|
|
mtx_destroy(&ki->kaio_mtx);
|
|
uma_zfree(kaio_zone, ki);
|
|
}
|
|
|
|
while (num_aio_procs < MIN(target_aio_procs, max_aio_procs))
|
|
aio_newproc(NULL);
|
|
}
|
|
|
|
static int
|
|
aio_sendsig(struct proc *p, struct sigevent *sigev, ksiginfo_t *ksi)
|
|
{
|
|
struct thread *td;
|
|
int error;
|
|
|
|
error = sigev_findtd(p, sigev, &td);
|
|
if (error)
|
|
return (error);
|
|
if (!KSI_ONQ(ksi)) {
|
|
ksiginfo_set_sigev(ksi, sigev);
|
|
ksi->ksi_code = SI_ASYNCIO;
|
|
ksi->ksi_flags |= KSI_EXT | KSI_INS;
|
|
tdsendsignal(p, td, ksi->ksi_signo, ksi);
|
|
}
|
|
PROC_UNLOCK(p);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Free a job entry. Wait for completion if it is currently active, but don't
|
|
* delay forever. If we delay, we return a flag that says that we have to
|
|
* restart the queue scan.
|
|
*/
|
|
static int
|
|
aio_free_entry(struct aiocblist *aiocbe)
|
|
{
|
|
struct kaioinfo *ki;
|
|
struct aioliojob *lj;
|
|
struct proc *p;
|
|
|
|
p = aiocbe->userproc;
|
|
MPASS(curproc == p);
|
|
ki = p->p_aioinfo;
|
|
MPASS(ki != NULL);
|
|
|
|
AIO_LOCK_ASSERT(ki, MA_OWNED);
|
|
MPASS(aiocbe->jobstate == JOBST_JOBFINISHED);
|
|
|
|
atomic_subtract_int(&num_queue_count, 1);
|
|
|
|
ki->kaio_count--;
|
|
MPASS(ki->kaio_count >= 0);
|
|
|
|
TAILQ_REMOVE(&ki->kaio_done, aiocbe, plist);
|
|
TAILQ_REMOVE(&ki->kaio_all, aiocbe, allist);
|
|
|
|
lj = aiocbe->lio;
|
|
if (lj) {
|
|
lj->lioj_count--;
|
|
lj->lioj_finished_count--;
|
|
|
|
if (lj->lioj_count == 0) {
|
|
TAILQ_REMOVE(&ki->kaio_liojoblist, lj, lioj_list);
|
|
/* lio is going away, we need to destroy any knotes */
|
|
knlist_delete(&lj->klist, curthread, 1);
|
|
PROC_LOCK(p);
|
|
sigqueue_take(&lj->lioj_ksi);
|
|
PROC_UNLOCK(p);
|
|
uma_zfree(aiolio_zone, lj);
|
|
}
|
|
}
|
|
|
|
/* aiocbe is going away, we need to destroy any knotes */
|
|
knlist_delete(&aiocbe->klist, curthread, 1);
|
|
PROC_LOCK(p);
|
|
sigqueue_take(&aiocbe->ksi);
|
|
PROC_UNLOCK(p);
|
|
|
|
MPASS(aiocbe->bp == NULL);
|
|
aiocbe->jobstate = JOBST_NULL;
|
|
AIO_UNLOCK(ki);
|
|
|
|
/*
|
|
* The thread argument here is used to find the owning process
|
|
* and is also passed to fo_close() which may pass it to various
|
|
* places such as devsw close() routines. Because of that, we
|
|
* need a thread pointer from the process owning the job that is
|
|
* persistent and won't disappear out from under us or move to
|
|
* another process.
|
|
*
|
|
* Currently, all the callers of this function call it to remove
|
|
* an aiocblist from the current process' job list either via a
|
|
* syscall or due to the current process calling exit() or
|
|
* execve(). Thus, we know that p == curproc. We also know that
|
|
* curthread can't exit since we are curthread.
|
|
*
|
|
* Therefore, we use curthread as the thread to pass to
|
|
* knlist_delete(). This does mean that it is possible for the
|
|
* thread pointer at close time to differ from the thread pointer
|
|
* at open time, but this is already true of file descriptors in
|
|
* a multithreaded process.
|
|
*/
|
|
if (aiocbe->fd_file)
|
|
fdrop(aiocbe->fd_file, curthread);
|
|
crfree(aiocbe->cred);
|
|
uma_zfree(aiocb_zone, aiocbe);
|
|
AIO_LOCK(ki);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
aio_proc_rundown_exec(void *arg, struct proc *p, struct image_params *imgp __unused)
|
|
{
|
|
aio_proc_rundown(arg, p);
|
|
}
|
|
|
|
/*
|
|
* Rundown the jobs for a given process.
|
|
*/
|
|
static void
|
|
aio_proc_rundown(void *arg, struct proc *p)
|
|
{
|
|
struct kaioinfo *ki;
|
|
struct aioliojob *lj;
|
|
struct aiocblist *cbe, *cbn;
|
|
struct file *fp;
|
|
struct socket *so;
|
|
int remove;
|
|
|
|
KASSERT(curthread->td_proc == p,
|
|
("%s: called on non-curproc", __func__));
|
|
ki = p->p_aioinfo;
|
|
if (ki == NULL)
|
|
return;
|
|
|
|
AIO_LOCK(ki);
|
|
ki->kaio_flags |= KAIO_RUNDOWN;
|
|
|
|
restart:
|
|
|
|
/*
|
|
* Try to cancel all pending requests. This code simulates
|
|
* aio_cancel on all pending I/O requests.
|
|
*/
|
|
TAILQ_FOREACH_SAFE(cbe, &ki->kaio_jobqueue, plist, cbn) {
|
|
remove = 0;
|
|
mtx_lock(&aio_job_mtx);
|
|
if (cbe->jobstate == JOBST_JOBQGLOBAL) {
|
|
TAILQ_REMOVE(&aio_jobs, cbe, list);
|
|
remove = 1;
|
|
} else if (cbe->jobstate == JOBST_JOBQSOCK) {
|
|
fp = cbe->fd_file;
|
|
MPASS(fp->f_type == DTYPE_SOCKET);
|
|
so = fp->f_data;
|
|
TAILQ_REMOVE(&so->so_aiojobq, cbe, list);
|
|
remove = 1;
|
|
} else if (cbe->jobstate == JOBST_JOBQSYNC) {
|
|
TAILQ_REMOVE(&ki->kaio_syncqueue, cbe, list);
|
|
remove = 1;
|
|
}
|
|
mtx_unlock(&aio_job_mtx);
|
|
|
|
if (remove) {
|
|
cbe->jobstate = JOBST_JOBFINISHED;
|
|
cbe->uaiocb._aiocb_private.status = -1;
|
|
cbe->uaiocb._aiocb_private.error = ECANCELED;
|
|
TAILQ_REMOVE(&ki->kaio_jobqueue, cbe, plist);
|
|
aio_bio_done_notify(p, cbe, DONE_QUEUE);
|
|
}
|
|
}
|
|
|
|
/* Wait for all running I/O to be finished */
|
|
if (TAILQ_FIRST(&ki->kaio_bufqueue) ||
|
|
TAILQ_FIRST(&ki->kaio_jobqueue)) {
|
|
ki->kaio_flags |= KAIO_WAKEUP;
|
|
msleep(&p->p_aioinfo, AIO_MTX(ki), PRIBIO, "aioprn", hz);
|
|
goto restart;
|
|
}
|
|
|
|
/* Free all completed I/O requests. */
|
|
while ((cbe = TAILQ_FIRST(&ki->kaio_done)) != NULL)
|
|
aio_free_entry(cbe);
|
|
|
|
while ((lj = TAILQ_FIRST(&ki->kaio_liojoblist)) != NULL) {
|
|
if (lj->lioj_count == 0) {
|
|
TAILQ_REMOVE(&ki->kaio_liojoblist, lj, lioj_list);
|
|
knlist_delete(&lj->klist, curthread, 1);
|
|
PROC_LOCK(p);
|
|
sigqueue_take(&lj->lioj_ksi);
|
|
PROC_UNLOCK(p);
|
|
uma_zfree(aiolio_zone, lj);
|
|
} else {
|
|
panic("LIO job not cleaned up: C:%d, FC:%d\n",
|
|
lj->lioj_count, lj->lioj_finished_count);
|
|
}
|
|
}
|
|
AIO_UNLOCK(ki);
|
|
taskqueue_drain(taskqueue_aiod_bio, &ki->kaio_task);
|
|
mtx_destroy(&ki->kaio_mtx);
|
|
uma_zfree(kaio_zone, ki);
|
|
p->p_aioinfo = NULL;
|
|
}
|
|
|
|
/*
|
|
* Select a job to run (called by an AIO daemon).
|
|
*/
|
|
static struct aiocblist *
|
|
aio_selectjob(struct aiothreadlist *aiop)
|
|
{
|
|
struct aiocblist *aiocbe;
|
|
struct kaioinfo *ki;
|
|
struct proc *userp;
|
|
|
|
mtx_assert(&aio_job_mtx, MA_OWNED);
|
|
TAILQ_FOREACH(aiocbe, &aio_jobs, list) {
|
|
userp = aiocbe->userproc;
|
|
ki = userp->p_aioinfo;
|
|
|
|
if (ki->kaio_active_count < ki->kaio_maxactive_count) {
|
|
TAILQ_REMOVE(&aio_jobs, aiocbe, list);
|
|
/* Account for currently active jobs. */
|
|
ki->kaio_active_count++;
|
|
aiocbe->jobstate = JOBST_JOBRUNNING;
|
|
break;
|
|
}
|
|
}
|
|
return (aiocbe);
|
|
}
|
|
|
|
/*
|
|
* Move all data to a permanent storage device, this code
|
|
* simulates fsync syscall.
|
|
*/
|
|
static int
|
|
aio_fsync_vnode(struct thread *td, struct vnode *vp)
|
|
{
|
|
struct mount *mp;
|
|
int error;
|
|
|
|
if ((error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0)
|
|
goto drop;
|
|
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
|
|
if (vp->v_object != NULL) {
|
|
VM_OBJECT_WLOCK(vp->v_object);
|
|
vm_object_page_clean(vp->v_object, 0, 0, 0);
|
|
VM_OBJECT_WUNLOCK(vp->v_object);
|
|
}
|
|
error = VOP_FSYNC(vp, MNT_WAIT, td);
|
|
|
|
VOP_UNLOCK(vp, 0);
|
|
vn_finished_write(mp);
|
|
drop:
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* The AIO processing activity for LIO_READ/LIO_WRITE. This is the code that
|
|
* does the I/O request for the non-physio version of the operations. The
|
|
* normal vn operations are used, and this code should work in all instances
|
|
* for every type of file, including pipes, sockets, fifos, and regular files.
|
|
*
|
|
* XXX I don't think it works well for socket, pipe, and fifo.
|
|
*/
|
|
static void
|
|
aio_process_rw(struct aiocblist *aiocbe)
|
|
{
|
|
struct ucred *td_savedcred;
|
|
struct thread *td;
|
|
struct aiocb *cb;
|
|
struct file *fp;
|
|
struct socket *so;
|
|
struct uio auio;
|
|
struct iovec aiov;
|
|
int cnt;
|
|
int error;
|
|
int oublock_st, oublock_end;
|
|
int inblock_st, inblock_end;
|
|
|
|
KASSERT(aiocbe->uaiocb.aio_lio_opcode == LIO_READ ||
|
|
aiocbe->uaiocb.aio_lio_opcode == LIO_WRITE,
|
|
("%s: opcode %d", __func__, aiocbe->uaiocb.aio_lio_opcode));
|
|
|
|
td = curthread;
|
|
td_savedcred = td->td_ucred;
|
|
td->td_ucred = aiocbe->cred;
|
|
cb = &aiocbe->uaiocb;
|
|
fp = aiocbe->fd_file;
|
|
|
|
aiov.iov_base = (void *)(uintptr_t)cb->aio_buf;
|
|
aiov.iov_len = cb->aio_nbytes;
|
|
|
|
auio.uio_iov = &aiov;
|
|
auio.uio_iovcnt = 1;
|
|
auio.uio_offset = cb->aio_offset;
|
|
auio.uio_resid = cb->aio_nbytes;
|
|
cnt = cb->aio_nbytes;
|
|
auio.uio_segflg = UIO_USERSPACE;
|
|
auio.uio_td = td;
|
|
|
|
inblock_st = td->td_ru.ru_inblock;
|
|
oublock_st = td->td_ru.ru_oublock;
|
|
/*
|
|
* aio_aqueue() acquires a reference to the file that is
|
|
* released in aio_free_entry().
|
|
*/
|
|
if (cb->aio_lio_opcode == LIO_READ) {
|
|
auio.uio_rw = UIO_READ;
|
|
if (auio.uio_resid == 0)
|
|
error = 0;
|
|
else
|
|
error = fo_read(fp, &auio, fp->f_cred, FOF_OFFSET, td);
|
|
} else {
|
|
if (fp->f_type == DTYPE_VNODE)
|
|
bwillwrite();
|
|
auio.uio_rw = UIO_WRITE;
|
|
error = fo_write(fp, &auio, fp->f_cred, FOF_OFFSET, td);
|
|
}
|
|
inblock_end = td->td_ru.ru_inblock;
|
|
oublock_end = td->td_ru.ru_oublock;
|
|
|
|
aiocbe->inputcharge = inblock_end - inblock_st;
|
|
aiocbe->outputcharge = oublock_end - oublock_st;
|
|
|
|
if ((error) && (auio.uio_resid != cnt)) {
|
|
if (error == ERESTART || error == EINTR || error == EWOULDBLOCK)
|
|
error = 0;
|
|
if ((error == EPIPE) && (cb->aio_lio_opcode == LIO_WRITE)) {
|
|
int sigpipe = 1;
|
|
if (fp->f_type == DTYPE_SOCKET) {
|
|
so = fp->f_data;
|
|
if (so->so_options & SO_NOSIGPIPE)
|
|
sigpipe = 0;
|
|
}
|
|
if (sigpipe) {
|
|
PROC_LOCK(aiocbe->userproc);
|
|
kern_psignal(aiocbe->userproc, SIGPIPE);
|
|
PROC_UNLOCK(aiocbe->userproc);
|
|
}
|
|
}
|
|
}
|
|
|
|
cnt -= auio.uio_resid;
|
|
cb->_aiocb_private.error = error;
|
|
cb->_aiocb_private.status = cnt;
|
|
td->td_ucred = td_savedcred;
|
|
}
|
|
|
|
static void
|
|
aio_process_sync(struct aiocblist *aiocbe)
|
|
{
|
|
struct thread *td = curthread;
|
|
struct ucred *td_savedcred = td->td_ucred;
|
|
struct aiocb *cb = &aiocbe->uaiocb;
|
|
struct file *fp = aiocbe->fd_file;
|
|
int error = 0;
|
|
|
|
KASSERT(aiocbe->uaiocb.aio_lio_opcode == LIO_SYNC,
|
|
("%s: opcode %d", __func__, aiocbe->uaiocb.aio_lio_opcode));
|
|
|
|
td->td_ucred = aiocbe->cred;
|
|
if (fp->f_vnode != NULL)
|
|
error = aio_fsync_vnode(td, fp->f_vnode);
|
|
cb->_aiocb_private.error = error;
|
|
cb->_aiocb_private.status = 0;
|
|
td->td_ucred = td_savedcred;
|
|
}
|
|
|
|
static void
|
|
aio_process_mlock(struct aiocblist *aiocbe)
|
|
{
|
|
struct aiocb *cb = &aiocbe->uaiocb;
|
|
int error;
|
|
|
|
KASSERT(aiocbe->uaiocb.aio_lio_opcode == LIO_MLOCK,
|
|
("%s: opcode %d", __func__, aiocbe->uaiocb.aio_lio_opcode));
|
|
|
|
error = vm_mlock(aiocbe->userproc, aiocbe->cred,
|
|
__DEVOLATILE(void *, cb->aio_buf), cb->aio_nbytes);
|
|
cb->_aiocb_private.error = error;
|
|
cb->_aiocb_private.status = 0;
|
|
}
|
|
|
|
static void
|
|
aio_bio_done_notify(struct proc *userp, struct aiocblist *aiocbe, int type)
|
|
{
|
|
struct aioliojob *lj;
|
|
struct kaioinfo *ki;
|
|
struct aiocblist *scb, *scbn;
|
|
int lj_done;
|
|
|
|
ki = userp->p_aioinfo;
|
|
AIO_LOCK_ASSERT(ki, MA_OWNED);
|
|
lj = aiocbe->lio;
|
|
lj_done = 0;
|
|
if (lj) {
|
|
lj->lioj_finished_count++;
|
|
if (lj->lioj_count == lj->lioj_finished_count)
|
|
lj_done = 1;
|
|
}
|
|
if (type == DONE_QUEUE) {
|
|
aiocbe->jobflags |= AIOCBLIST_DONE;
|
|
} else {
|
|
aiocbe->jobflags |= AIOCBLIST_BUFDONE;
|
|
}
|
|
TAILQ_INSERT_TAIL(&ki->kaio_done, aiocbe, plist);
|
|
aiocbe->jobstate = JOBST_JOBFINISHED;
|
|
|
|
if (ki->kaio_flags & KAIO_RUNDOWN)
|
|
goto notification_done;
|
|
|
|
if (aiocbe->uaiocb.aio_sigevent.sigev_notify == SIGEV_SIGNAL ||
|
|
aiocbe->uaiocb.aio_sigevent.sigev_notify == SIGEV_THREAD_ID)
|
|
aio_sendsig(userp, &aiocbe->uaiocb.aio_sigevent, &aiocbe->ksi);
|
|
|
|
KNOTE_LOCKED(&aiocbe->klist, 1);
|
|
|
|
if (lj_done) {
|
|
if (lj->lioj_signal.sigev_notify == SIGEV_KEVENT) {
|
|
lj->lioj_flags |= LIOJ_KEVENT_POSTED;
|
|
KNOTE_LOCKED(&lj->klist, 1);
|
|
}
|
|
if ((lj->lioj_flags & (LIOJ_SIGNAL|LIOJ_SIGNAL_POSTED))
|
|
== LIOJ_SIGNAL
|
|
&& (lj->lioj_signal.sigev_notify == SIGEV_SIGNAL ||
|
|
lj->lioj_signal.sigev_notify == SIGEV_THREAD_ID)) {
|
|
aio_sendsig(userp, &lj->lioj_signal, &lj->lioj_ksi);
|
|
lj->lioj_flags |= LIOJ_SIGNAL_POSTED;
|
|
}
|
|
}
|
|
|
|
notification_done:
|
|
if (aiocbe->jobflags & AIOCBLIST_CHECKSYNC) {
|
|
TAILQ_FOREACH_SAFE(scb, &ki->kaio_syncqueue, list, scbn) {
|
|
if (aiocbe->fd_file == scb->fd_file &&
|
|
aiocbe->seqno < scb->seqno) {
|
|
if (--scb->pending == 0) {
|
|
mtx_lock(&aio_job_mtx);
|
|
scb->jobstate = JOBST_JOBQGLOBAL;
|
|
TAILQ_REMOVE(&ki->kaio_syncqueue, scb, list);
|
|
TAILQ_INSERT_TAIL(&aio_jobs, scb, list);
|
|
aio_kick_nowait(userp);
|
|
mtx_unlock(&aio_job_mtx);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (ki->kaio_flags & KAIO_WAKEUP) {
|
|
ki->kaio_flags &= ~KAIO_WAKEUP;
|
|
wakeup(&userp->p_aioinfo);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The AIO daemon, most of the actual work is done in aio_process_*,
|
|
* but the setup (and address space mgmt) is done in this routine.
|
|
*/
|
|
static void
|
|
aio_daemon(void *_id)
|
|
{
|
|
struct aiocblist *aiocbe;
|
|
struct aiothreadlist *aiop;
|
|
struct kaioinfo *ki;
|
|
struct proc *curcp, *mycp, *userp;
|
|
struct vmspace *myvm, *tmpvm;
|
|
struct thread *td = curthread;
|
|
int id = (intptr_t)_id;
|
|
|
|
/*
|
|
* Local copies of curproc (cp) and vmspace (myvm)
|
|
*/
|
|
mycp = td->td_proc;
|
|
myvm = mycp->p_vmspace;
|
|
|
|
KASSERT(mycp->p_textvp == NULL, ("kthread has a textvp"));
|
|
|
|
/*
|
|
* Allocate and ready the aio control info. There is one aiop structure
|
|
* per daemon.
|
|
*/
|
|
aiop = uma_zalloc(aiop_zone, M_WAITOK);
|
|
aiop->aiothread = td;
|
|
aiop->aiothreadflags = 0;
|
|
|
|
/* The daemon resides in its own pgrp. */
|
|
sys_setsid(td, NULL);
|
|
|
|
/*
|
|
* Wakeup parent process. (Parent sleeps to keep from blasting away
|
|
* and creating too many daemons.)
|
|
*/
|
|
sema_post(&aio_newproc_sem);
|
|
|
|
mtx_lock(&aio_job_mtx);
|
|
for (;;) {
|
|
/*
|
|
* curcp is the current daemon process context.
|
|
* userp is the current user process context.
|
|
*/
|
|
curcp = mycp;
|
|
|
|
/*
|
|
* Take daemon off of free queue
|
|
*/
|
|
if (aiop->aiothreadflags & AIOP_FREE) {
|
|
TAILQ_REMOVE(&aio_freeproc, aiop, list);
|
|
aiop->aiothreadflags &= ~AIOP_FREE;
|
|
}
|
|
|
|
/*
|
|
* Check for jobs.
|
|
*/
|
|
while ((aiocbe = aio_selectjob(aiop)) != NULL) {
|
|
mtx_unlock(&aio_job_mtx);
|
|
userp = aiocbe->userproc;
|
|
|
|
/*
|
|
* Connect to process address space for user program.
|
|
*/
|
|
if (userp != curcp) {
|
|
/*
|
|
* Save the current address space that we are
|
|
* connected to.
|
|
*/
|
|
tmpvm = mycp->p_vmspace;
|
|
|
|
/*
|
|
* Point to the new user address space, and
|
|
* refer to it.
|
|
*/
|
|
mycp->p_vmspace = userp->p_vmspace;
|
|
atomic_add_int(&mycp->p_vmspace->vm_refcnt, 1);
|
|
|
|
/* Activate the new mapping. */
|
|
pmap_activate(FIRST_THREAD_IN_PROC(mycp));
|
|
|
|
/*
|
|
* If the old address space wasn't the daemons
|
|
* own address space, then we need to remove the
|
|
* daemon's reference from the other process
|
|
* that it was acting on behalf of.
|
|
*/
|
|
if (tmpvm != myvm) {
|
|
vmspace_free(tmpvm);
|
|
}
|
|
curcp = userp;
|
|
}
|
|
|
|
ki = userp->p_aioinfo;
|
|
|
|
/* Do the I/O function. */
|
|
switch(aiocbe->uaiocb.aio_lio_opcode) {
|
|
case LIO_READ:
|
|
case LIO_WRITE:
|
|
aio_process_rw(aiocbe);
|
|
break;
|
|
case LIO_SYNC:
|
|
aio_process_sync(aiocbe);
|
|
break;
|
|
case LIO_MLOCK:
|
|
aio_process_mlock(aiocbe);
|
|
break;
|
|
}
|
|
|
|
mtx_lock(&aio_job_mtx);
|
|
/* Decrement the active job count. */
|
|
ki->kaio_active_count--;
|
|
mtx_unlock(&aio_job_mtx);
|
|
|
|
AIO_LOCK(ki);
|
|
TAILQ_REMOVE(&ki->kaio_jobqueue, aiocbe, plist);
|
|
aio_bio_done_notify(userp, aiocbe, DONE_QUEUE);
|
|
AIO_UNLOCK(ki);
|
|
|
|
mtx_lock(&aio_job_mtx);
|
|
}
|
|
|
|
/*
|
|
* Disconnect from user address space.
|
|
*/
|
|
if (curcp != mycp) {
|
|
|
|
mtx_unlock(&aio_job_mtx);
|
|
|
|
/* Get the user address space to disconnect from. */
|
|
tmpvm = mycp->p_vmspace;
|
|
|
|
/* Get original address space for daemon. */
|
|
mycp->p_vmspace = myvm;
|
|
|
|
/* Activate the daemon's address space. */
|
|
pmap_activate(FIRST_THREAD_IN_PROC(mycp));
|
|
#ifdef DIAGNOSTIC
|
|
if (tmpvm == myvm) {
|
|
printf("AIOD: vmspace problem -- %d\n",
|
|
mycp->p_pid);
|
|
}
|
|
#endif
|
|
/* Remove our vmspace reference. */
|
|
vmspace_free(tmpvm);
|
|
|
|
curcp = mycp;
|
|
|
|
mtx_lock(&aio_job_mtx);
|
|
/*
|
|
* We have to restart to avoid race, we only sleep if
|
|
* no job can be selected, that should be
|
|
* curcp == mycp.
|
|
*/
|
|
continue;
|
|
}
|
|
|
|
mtx_assert(&aio_job_mtx, MA_OWNED);
|
|
|
|
TAILQ_INSERT_HEAD(&aio_freeproc, aiop, list);
|
|
aiop->aiothreadflags |= AIOP_FREE;
|
|
|
|
/*
|
|
* If daemon is inactive for a long time, allow it to exit,
|
|
* thereby freeing resources.
|
|
*/
|
|
if (msleep(aiop->aiothread, &aio_job_mtx, PRIBIO, "aiordy",
|
|
aiod_lifetime)) {
|
|
if (TAILQ_EMPTY(&aio_jobs)) {
|
|
if ((aiop->aiothreadflags & AIOP_FREE) &&
|
|
(num_aio_procs > target_aio_procs)) {
|
|
TAILQ_REMOVE(&aio_freeproc, aiop, list);
|
|
num_aio_procs--;
|
|
mtx_unlock(&aio_job_mtx);
|
|
uma_zfree(aiop_zone, aiop);
|
|
free_unr(aiod_unr, id);
|
|
#ifdef DIAGNOSTIC
|
|
if (mycp->p_vmspace->vm_refcnt <= 1) {
|
|
printf("AIOD: bad vm refcnt for"
|
|
" exiting daemon: %d\n",
|
|
mycp->p_vmspace->vm_refcnt);
|
|
}
|
|
#endif
|
|
kproc_exit(0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
mtx_unlock(&aio_job_mtx);
|
|
panic("shouldn't be here\n");
|
|
}
|
|
|
|
/*
|
|
* Create a new AIO daemon. This is mostly a kernel-thread fork routine. The
|
|
* AIO daemon modifies its environment itself.
|
|
*/
|
|
static int
|
|
aio_newproc(int *start)
|
|
{
|
|
int error;
|
|
struct proc *p;
|
|
int id;
|
|
|
|
id = alloc_unr(aiod_unr);
|
|
error = kproc_create(aio_daemon, (void *)(intptr_t)id, &p,
|
|
RFNOWAIT, 0, "aiod%d", id);
|
|
if (error == 0) {
|
|
/*
|
|
* Wait until daemon is started.
|
|
*/
|
|
sema_wait(&aio_newproc_sem);
|
|
mtx_lock(&aio_job_mtx);
|
|
num_aio_procs++;
|
|
if (start != NULL)
|
|
(*start)--;
|
|
mtx_unlock(&aio_job_mtx);
|
|
} else {
|
|
free_unr(aiod_unr, id);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Try the high-performance, low-overhead physio method for eligible
|
|
* VCHR devices. This method doesn't use an aio helper thread, and
|
|
* thus has very low overhead.
|
|
*
|
|
* Assumes that the caller, aio_aqueue(), has incremented the file
|
|
* structure's reference count, preventing its deallocation for the
|
|
* duration of this call.
|
|
*/
|
|
static int
|
|
aio_qphysio(struct proc *p, struct aiocblist *aiocbe)
|
|
{
|
|
struct aiocb *cb;
|
|
struct file *fp;
|
|
struct bio *bp;
|
|
struct buf *pbuf;
|
|
struct vnode *vp;
|
|
struct cdevsw *csw;
|
|
struct cdev *dev;
|
|
struct kaioinfo *ki;
|
|
struct aioliojob *lj;
|
|
int error, ref, unmap, poff;
|
|
vm_prot_t prot;
|
|
|
|
cb = &aiocbe->uaiocb;
|
|
fp = aiocbe->fd_file;
|
|
|
|
if (fp == NULL || fp->f_type != DTYPE_VNODE)
|
|
return (-1);
|
|
|
|
vp = fp->f_vnode;
|
|
if (vp->v_type != VCHR)
|
|
return (-1);
|
|
if (vp->v_bufobj.bo_bsize == 0)
|
|
return (-1);
|
|
if (cb->aio_nbytes % vp->v_bufobj.bo_bsize)
|
|
return (-1);
|
|
|
|
ref = 0;
|
|
csw = devvn_refthread(vp, &dev, &ref);
|
|
if (csw == NULL)
|
|
return (ENXIO);
|
|
|
|
if ((csw->d_flags & D_DISK) == 0) {
|
|
error = -1;
|
|
goto unref;
|
|
}
|
|
if (cb->aio_nbytes > dev->si_iosize_max) {
|
|
error = -1;
|
|
goto unref;
|
|
}
|
|
|
|
ki = p->p_aioinfo;
|
|
poff = (vm_offset_t)cb->aio_buf & PAGE_MASK;
|
|
unmap = ((dev->si_flags & SI_UNMAPPED) && unmapped_buf_allowed);
|
|
if (unmap) {
|
|
if (cb->aio_nbytes > MAXPHYS) {
|
|
error = -1;
|
|
goto unref;
|
|
}
|
|
} else {
|
|
if (cb->aio_nbytes > MAXPHYS - poff) {
|
|
error = -1;
|
|
goto unref;
|
|
}
|
|
if (ki->kaio_buffer_count >= ki->kaio_ballowed_count) {
|
|
error = -1;
|
|
goto unref;
|
|
}
|
|
}
|
|
aiocbe->bp = bp = g_alloc_bio();
|
|
if (!unmap) {
|
|
aiocbe->pbuf = pbuf = (struct buf *)getpbuf(NULL);
|
|
BUF_KERNPROC(pbuf);
|
|
}
|
|
|
|
AIO_LOCK(ki);
|
|
ki->kaio_count++;
|
|
if (!unmap)
|
|
ki->kaio_buffer_count++;
|
|
lj = aiocbe->lio;
|
|
if (lj)
|
|
lj->lioj_count++;
|
|
TAILQ_INSERT_TAIL(&ki->kaio_bufqueue, aiocbe, plist);
|
|
TAILQ_INSERT_TAIL(&ki->kaio_all, aiocbe, allist);
|
|
aiocbe->jobstate = JOBST_JOBQBUF;
|
|
cb->_aiocb_private.status = cb->aio_nbytes;
|
|
AIO_UNLOCK(ki);
|
|
|
|
bp->bio_length = cb->aio_nbytes;
|
|
bp->bio_bcount = cb->aio_nbytes;
|
|
bp->bio_done = aio_physwakeup;
|
|
bp->bio_data = (void *)(uintptr_t)cb->aio_buf;
|
|
bp->bio_offset = cb->aio_offset;
|
|
bp->bio_cmd = cb->aio_lio_opcode == LIO_WRITE ? BIO_WRITE : BIO_READ;
|
|
bp->bio_dev = dev;
|
|
bp->bio_caller1 = (void *)aiocbe;
|
|
|
|
prot = VM_PROT_READ;
|
|
if (cb->aio_lio_opcode == LIO_READ)
|
|
prot |= VM_PROT_WRITE; /* Less backwards than it looks */
|
|
if ((aiocbe->npages = vm_fault_quick_hold_pages(
|
|
&curproc->p_vmspace->vm_map,
|
|
(vm_offset_t)bp->bio_data, bp->bio_length, prot, aiocbe->pages,
|
|
sizeof(aiocbe->pages)/sizeof(aiocbe->pages[0]))) < 0) {
|
|
error = EFAULT;
|
|
goto doerror;
|
|
}
|
|
if (!unmap) {
|
|
pmap_qenter((vm_offset_t)pbuf->b_data,
|
|
aiocbe->pages, aiocbe->npages);
|
|
bp->bio_data = pbuf->b_data + poff;
|
|
} else {
|
|
bp->bio_ma = aiocbe->pages;
|
|
bp->bio_ma_n = aiocbe->npages;
|
|
bp->bio_ma_offset = poff;
|
|
bp->bio_data = unmapped_buf;
|
|
bp->bio_flags |= BIO_UNMAPPED;
|
|
}
|
|
|
|
atomic_add_int(&num_queue_count, 1);
|
|
if (!unmap)
|
|
atomic_add_int(&num_buf_aio, 1);
|
|
|
|
/* Perform transfer. */
|
|
csw->d_strategy(bp);
|
|
dev_relthread(dev, ref);
|
|
return (0);
|
|
|
|
doerror:
|
|
AIO_LOCK(ki);
|
|
aiocbe->jobstate = JOBST_NULL;
|
|
TAILQ_REMOVE(&ki->kaio_bufqueue, aiocbe, plist);
|
|
TAILQ_REMOVE(&ki->kaio_all, aiocbe, allist);
|
|
ki->kaio_count--;
|
|
if (!unmap)
|
|
ki->kaio_buffer_count--;
|
|
if (lj)
|
|
lj->lioj_count--;
|
|
AIO_UNLOCK(ki);
|
|
if (pbuf) {
|
|
relpbuf(pbuf, NULL);
|
|
aiocbe->pbuf = NULL;
|
|
}
|
|
g_destroy_bio(bp);
|
|
aiocbe->bp = NULL;
|
|
unref:
|
|
dev_relthread(dev, ref);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Wake up aio requests that may be serviceable now.
|
|
*/
|
|
static void
|
|
aio_swake_cb(struct socket *so, struct sockbuf *sb)
|
|
{
|
|
struct aiocblist *cb, *cbn;
|
|
int opcode;
|
|
|
|
SOCKBUF_LOCK_ASSERT(sb);
|
|
if (sb == &so->so_snd)
|
|
opcode = LIO_WRITE;
|
|
else
|
|
opcode = LIO_READ;
|
|
|
|
sb->sb_flags &= ~SB_AIO;
|
|
mtx_lock(&aio_job_mtx);
|
|
TAILQ_FOREACH_SAFE(cb, &so->so_aiojobq, list, cbn) {
|
|
if (opcode == cb->uaiocb.aio_lio_opcode) {
|
|
if (cb->jobstate != JOBST_JOBQSOCK)
|
|
panic("invalid queue value");
|
|
/* XXX
|
|
* We don't have actual sockets backend yet,
|
|
* so we simply move the requests to the generic
|
|
* file I/O backend.
|
|
*/
|
|
TAILQ_REMOVE(&so->so_aiojobq, cb, list);
|
|
TAILQ_INSERT_TAIL(&aio_jobs, cb, list);
|
|
aio_kick_nowait(cb->userproc);
|
|
}
|
|
}
|
|
mtx_unlock(&aio_job_mtx);
|
|
}
|
|
|
|
static int
|
|
convert_old_sigevent(struct osigevent *osig, struct sigevent *nsig)
|
|
{
|
|
|
|
/*
|
|
* Only SIGEV_NONE, SIGEV_SIGNAL, and SIGEV_KEVENT are
|
|
* supported by AIO with the old sigevent structure.
|
|
*/
|
|
nsig->sigev_notify = osig->sigev_notify;
|
|
switch (nsig->sigev_notify) {
|
|
case SIGEV_NONE:
|
|
break;
|
|
case SIGEV_SIGNAL:
|
|
nsig->sigev_signo = osig->__sigev_u.__sigev_signo;
|
|
break;
|
|
case SIGEV_KEVENT:
|
|
nsig->sigev_notify_kqueue =
|
|
osig->__sigev_u.__sigev_notify_kqueue;
|
|
nsig->sigev_value.sival_ptr = osig->sigev_value.sival_ptr;
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
aiocb_copyin_old_sigevent(struct aiocb *ujob, struct aiocb *kjob)
|
|
{
|
|
struct oaiocb *ojob;
|
|
int error;
|
|
|
|
bzero(kjob, sizeof(struct aiocb));
|
|
error = copyin(ujob, kjob, sizeof(struct oaiocb));
|
|
if (error)
|
|
return (error);
|
|
ojob = (struct oaiocb *)kjob;
|
|
return (convert_old_sigevent(&ojob->aio_sigevent, &kjob->aio_sigevent));
|
|
}
|
|
|
|
static int
|
|
aiocb_copyin(struct aiocb *ujob, struct aiocb *kjob)
|
|
{
|
|
|
|
return (copyin(ujob, kjob, sizeof(struct aiocb)));
|
|
}
|
|
|
|
static long
|
|
aiocb_fetch_status(struct aiocb *ujob)
|
|
{
|
|
|
|
return (fuword(&ujob->_aiocb_private.status));
|
|
}
|
|
|
|
static long
|
|
aiocb_fetch_error(struct aiocb *ujob)
|
|
{
|
|
|
|
return (fuword(&ujob->_aiocb_private.error));
|
|
}
|
|
|
|
static int
|
|
aiocb_store_status(struct aiocb *ujob, long status)
|
|
{
|
|
|
|
return (suword(&ujob->_aiocb_private.status, status));
|
|
}
|
|
|
|
static int
|
|
aiocb_store_error(struct aiocb *ujob, long error)
|
|
{
|
|
|
|
return (suword(&ujob->_aiocb_private.error, error));
|
|
}
|
|
|
|
static int
|
|
aiocb_store_kernelinfo(struct aiocb *ujob, long jobref)
|
|
{
|
|
|
|
return (suword(&ujob->_aiocb_private.kernelinfo, jobref));
|
|
}
|
|
|
|
static int
|
|
aiocb_store_aiocb(struct aiocb **ujobp, struct aiocb *ujob)
|
|
{
|
|
|
|
return (suword(ujobp, (long)ujob));
|
|
}
|
|
|
|
static struct aiocb_ops aiocb_ops = {
|
|
.copyin = aiocb_copyin,
|
|
.fetch_status = aiocb_fetch_status,
|
|
.fetch_error = aiocb_fetch_error,
|
|
.store_status = aiocb_store_status,
|
|
.store_error = aiocb_store_error,
|
|
.store_kernelinfo = aiocb_store_kernelinfo,
|
|
.store_aiocb = aiocb_store_aiocb,
|
|
};
|
|
|
|
static struct aiocb_ops aiocb_ops_osigevent = {
|
|
.copyin = aiocb_copyin_old_sigevent,
|
|
.fetch_status = aiocb_fetch_status,
|
|
.fetch_error = aiocb_fetch_error,
|
|
.store_status = aiocb_store_status,
|
|
.store_error = aiocb_store_error,
|
|
.store_kernelinfo = aiocb_store_kernelinfo,
|
|
.store_aiocb = aiocb_store_aiocb,
|
|
};
|
|
|
|
/*
|
|
* Queue a new AIO request. Choosing either the threaded or direct physio VCHR
|
|
* technique is done in this code.
|
|
*/
|
|
int
|
|
aio_aqueue(struct thread *td, struct aiocb *job, struct aioliojob *lj,
|
|
int type, struct aiocb_ops *ops)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
cap_rights_t rights;
|
|
struct file *fp;
|
|
struct socket *so;
|
|
struct aiocblist *aiocbe, *cb;
|
|
struct kaioinfo *ki;
|
|
struct kevent kev;
|
|
struct sockbuf *sb;
|
|
int opcode;
|
|
int error;
|
|
int fd, kqfd;
|
|
int jid;
|
|
u_short evflags;
|
|
|
|
if (p->p_aioinfo == NULL)
|
|
aio_init_aioinfo(p);
|
|
|
|
ki = p->p_aioinfo;
|
|
|
|
ops->store_status(job, -1);
|
|
ops->store_error(job, 0);
|
|
ops->store_kernelinfo(job, -1);
|
|
|
|
if (num_queue_count >= max_queue_count ||
|
|
ki->kaio_count >= ki->kaio_qallowed_count) {
|
|
ops->store_error(job, EAGAIN);
|
|
return (EAGAIN);
|
|
}
|
|
|
|
aiocbe = uma_zalloc(aiocb_zone, M_WAITOK | M_ZERO);
|
|
knlist_init_mtx(&aiocbe->klist, AIO_MTX(ki));
|
|
|
|
error = ops->copyin(job, &aiocbe->uaiocb);
|
|
if (error) {
|
|
ops->store_error(job, error);
|
|
uma_zfree(aiocb_zone, aiocbe);
|
|
return (error);
|
|
}
|
|
|
|
/* XXX: aio_nbytes is later casted to signed types. */
|
|
if (aiocbe->uaiocb.aio_nbytes > INT_MAX) {
|
|
uma_zfree(aiocb_zone, aiocbe);
|
|
return (EINVAL);
|
|
}
|
|
|
|
if (aiocbe->uaiocb.aio_sigevent.sigev_notify != SIGEV_KEVENT &&
|
|
aiocbe->uaiocb.aio_sigevent.sigev_notify != SIGEV_SIGNAL &&
|
|
aiocbe->uaiocb.aio_sigevent.sigev_notify != SIGEV_THREAD_ID &&
|
|
aiocbe->uaiocb.aio_sigevent.sigev_notify != SIGEV_NONE) {
|
|
ops->store_error(job, EINVAL);
|
|
uma_zfree(aiocb_zone, aiocbe);
|
|
return (EINVAL);
|
|
}
|
|
|
|
if ((aiocbe->uaiocb.aio_sigevent.sigev_notify == SIGEV_SIGNAL ||
|
|
aiocbe->uaiocb.aio_sigevent.sigev_notify == SIGEV_THREAD_ID) &&
|
|
!_SIG_VALID(aiocbe->uaiocb.aio_sigevent.sigev_signo)) {
|
|
uma_zfree(aiocb_zone, aiocbe);
|
|
return (EINVAL);
|
|
}
|
|
|
|
ksiginfo_init(&aiocbe->ksi);
|
|
|
|
/* Save userspace address of the job info. */
|
|
aiocbe->uuaiocb = job;
|
|
|
|
/* Get the opcode. */
|
|
if (type != LIO_NOP)
|
|
aiocbe->uaiocb.aio_lio_opcode = type;
|
|
opcode = aiocbe->uaiocb.aio_lio_opcode;
|
|
|
|
/*
|
|
* Validate the opcode and fetch the file object for the specified
|
|
* file descriptor.
|
|
*
|
|
* XXXRW: Moved the opcode validation up here so that we don't
|
|
* retrieve a file descriptor without knowing what the capabiltity
|
|
* should be.
|
|
*/
|
|
fd = aiocbe->uaiocb.aio_fildes;
|
|
switch (opcode) {
|
|
case LIO_WRITE:
|
|
error = fget_write(td, fd,
|
|
cap_rights_init(&rights, CAP_PWRITE), &fp);
|
|
break;
|
|
case LIO_READ:
|
|
error = fget_read(td, fd,
|
|
cap_rights_init(&rights, CAP_PREAD), &fp);
|
|
break;
|
|
case LIO_SYNC:
|
|
error = fget(td, fd, cap_rights_init(&rights, CAP_FSYNC), &fp);
|
|
break;
|
|
case LIO_MLOCK:
|
|
fp = NULL;
|
|
break;
|
|
case LIO_NOP:
|
|
error = fget(td, fd, cap_rights_init(&rights), &fp);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
}
|
|
if (error) {
|
|
uma_zfree(aiocb_zone, aiocbe);
|
|
ops->store_error(job, error);
|
|
return (error);
|
|
}
|
|
|
|
if (opcode == LIO_SYNC && fp->f_vnode == NULL) {
|
|
error = EINVAL;
|
|
goto aqueue_fail;
|
|
}
|
|
|
|
if (opcode != LIO_SYNC && aiocbe->uaiocb.aio_offset == -1LL) {
|
|
error = EINVAL;
|
|
goto aqueue_fail;
|
|
}
|
|
|
|
aiocbe->fd_file = fp;
|
|
|
|
mtx_lock(&aio_job_mtx);
|
|
jid = jobrefid++;
|
|
aiocbe->seqno = jobseqno++;
|
|
mtx_unlock(&aio_job_mtx);
|
|
error = ops->store_kernelinfo(job, jid);
|
|
if (error) {
|
|
error = EINVAL;
|
|
goto aqueue_fail;
|
|
}
|
|
aiocbe->uaiocb._aiocb_private.kernelinfo = (void *)(intptr_t)jid;
|
|
|
|
if (opcode == LIO_NOP) {
|
|
fdrop(fp, td);
|
|
uma_zfree(aiocb_zone, aiocbe);
|
|
return (0);
|
|
}
|
|
|
|
if (aiocbe->uaiocb.aio_sigevent.sigev_notify != SIGEV_KEVENT)
|
|
goto no_kqueue;
|
|
evflags = aiocbe->uaiocb.aio_sigevent.sigev_notify_kevent_flags;
|
|
if ((evflags & ~(EV_CLEAR | EV_DISPATCH | EV_ONESHOT)) != 0) {
|
|
error = EINVAL;
|
|
goto aqueue_fail;
|
|
}
|
|
kqfd = aiocbe->uaiocb.aio_sigevent.sigev_notify_kqueue;
|
|
kev.ident = (uintptr_t)aiocbe->uuaiocb;
|
|
kev.filter = EVFILT_AIO;
|
|
kev.flags = EV_ADD | EV_ENABLE | EV_FLAG1 | evflags;
|
|
kev.data = (intptr_t)aiocbe;
|
|
kev.udata = aiocbe->uaiocb.aio_sigevent.sigev_value.sival_ptr;
|
|
error = kqfd_register(kqfd, &kev, td, 1);
|
|
aqueue_fail:
|
|
if (error) {
|
|
if (fp)
|
|
fdrop(fp, td);
|
|
uma_zfree(aiocb_zone, aiocbe);
|
|
ops->store_error(job, error);
|
|
goto done;
|
|
}
|
|
no_kqueue:
|
|
|
|
ops->store_error(job, EINPROGRESS);
|
|
aiocbe->uaiocb._aiocb_private.error = EINPROGRESS;
|
|
aiocbe->userproc = p;
|
|
aiocbe->cred = crhold(td->td_ucred);
|
|
aiocbe->jobflags = 0;
|
|
aiocbe->lio = lj;
|
|
|
|
if (opcode == LIO_SYNC)
|
|
goto queueit;
|
|
|
|
if (fp && fp->f_type == DTYPE_SOCKET) {
|
|
/*
|
|
* Alternate queueing for socket ops: Reach down into the
|
|
* descriptor to get the socket data. Then check to see if the
|
|
* socket is ready to be read or written (based on the requested
|
|
* operation).
|
|
*
|
|
* If it is not ready for io, then queue the aiocbe on the
|
|
* socket, and set the flags so we get a call when sbnotify()
|
|
* happens.
|
|
*
|
|
* Note if opcode is neither LIO_WRITE nor LIO_READ we lock
|
|
* and unlock the snd sockbuf for no reason.
|
|
*/
|
|
so = fp->f_data;
|
|
sb = (opcode == LIO_READ) ? &so->so_rcv : &so->so_snd;
|
|
SOCKBUF_LOCK(sb);
|
|
if (((opcode == LIO_READ) && (!soreadable(so))) || ((opcode ==
|
|
LIO_WRITE) && (!sowriteable(so)))) {
|
|
sb->sb_flags |= SB_AIO;
|
|
|
|
mtx_lock(&aio_job_mtx);
|
|
TAILQ_INSERT_TAIL(&so->so_aiojobq, aiocbe, list);
|
|
mtx_unlock(&aio_job_mtx);
|
|
|
|
AIO_LOCK(ki);
|
|
TAILQ_INSERT_TAIL(&ki->kaio_all, aiocbe, allist);
|
|
TAILQ_INSERT_TAIL(&ki->kaio_jobqueue, aiocbe, plist);
|
|
aiocbe->jobstate = JOBST_JOBQSOCK;
|
|
ki->kaio_count++;
|
|
if (lj)
|
|
lj->lioj_count++;
|
|
AIO_UNLOCK(ki);
|
|
SOCKBUF_UNLOCK(sb);
|
|
atomic_add_int(&num_queue_count, 1);
|
|
error = 0;
|
|
goto done;
|
|
}
|
|
SOCKBUF_UNLOCK(sb);
|
|
}
|
|
|
|
if ((error = aio_qphysio(p, aiocbe)) == 0)
|
|
goto done;
|
|
#if 0
|
|
if (error > 0) {
|
|
aiocbe->uaiocb._aiocb_private.error = error;
|
|
ops->store_error(job, error);
|
|
goto done;
|
|
}
|
|
#endif
|
|
queueit:
|
|
atomic_add_int(&num_queue_count, 1);
|
|
|
|
AIO_LOCK(ki);
|
|
ki->kaio_count++;
|
|
if (lj)
|
|
lj->lioj_count++;
|
|
TAILQ_INSERT_TAIL(&ki->kaio_jobqueue, aiocbe, plist);
|
|
TAILQ_INSERT_TAIL(&ki->kaio_all, aiocbe, allist);
|
|
if (opcode == LIO_SYNC) {
|
|
TAILQ_FOREACH(cb, &ki->kaio_jobqueue, plist) {
|
|
if (cb->fd_file == aiocbe->fd_file &&
|
|
cb->uaiocb.aio_lio_opcode != LIO_SYNC &&
|
|
cb->seqno < aiocbe->seqno) {
|
|
cb->jobflags |= AIOCBLIST_CHECKSYNC;
|
|
aiocbe->pending++;
|
|
}
|
|
}
|
|
TAILQ_FOREACH(cb, &ki->kaio_bufqueue, plist) {
|
|
if (cb->fd_file == aiocbe->fd_file &&
|
|
cb->uaiocb.aio_lio_opcode != LIO_SYNC &&
|
|
cb->seqno < aiocbe->seqno) {
|
|
cb->jobflags |= AIOCBLIST_CHECKSYNC;
|
|
aiocbe->pending++;
|
|
}
|
|
}
|
|
if (aiocbe->pending != 0) {
|
|
TAILQ_INSERT_TAIL(&ki->kaio_syncqueue, aiocbe, list);
|
|
aiocbe->jobstate = JOBST_JOBQSYNC;
|
|
AIO_UNLOCK(ki);
|
|
goto done;
|
|
}
|
|
}
|
|
mtx_lock(&aio_job_mtx);
|
|
TAILQ_INSERT_TAIL(&aio_jobs, aiocbe, list);
|
|
aiocbe->jobstate = JOBST_JOBQGLOBAL;
|
|
aio_kick_nowait(p);
|
|
mtx_unlock(&aio_job_mtx);
|
|
AIO_UNLOCK(ki);
|
|
error = 0;
|
|
done:
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
aio_kick_nowait(struct proc *userp)
|
|
{
|
|
struct kaioinfo *ki = userp->p_aioinfo;
|
|
struct aiothreadlist *aiop;
|
|
|
|
mtx_assert(&aio_job_mtx, MA_OWNED);
|
|
if ((aiop = TAILQ_FIRST(&aio_freeproc)) != NULL) {
|
|
TAILQ_REMOVE(&aio_freeproc, aiop, list);
|
|
aiop->aiothreadflags &= ~AIOP_FREE;
|
|
wakeup(aiop->aiothread);
|
|
} else if (((num_aio_resv_start + num_aio_procs) < max_aio_procs) &&
|
|
((ki->kaio_active_count + num_aio_resv_start) <
|
|
ki->kaio_maxactive_count)) {
|
|
taskqueue_enqueue(taskqueue_aiod_bio, &ki->kaio_task);
|
|
}
|
|
}
|
|
|
|
static int
|
|
aio_kick(struct proc *userp)
|
|
{
|
|
struct kaioinfo *ki = userp->p_aioinfo;
|
|
struct aiothreadlist *aiop;
|
|
int error, ret = 0;
|
|
|
|
mtx_assert(&aio_job_mtx, MA_OWNED);
|
|
retryproc:
|
|
if ((aiop = TAILQ_FIRST(&aio_freeproc)) != NULL) {
|
|
TAILQ_REMOVE(&aio_freeproc, aiop, list);
|
|
aiop->aiothreadflags &= ~AIOP_FREE;
|
|
wakeup(aiop->aiothread);
|
|
} else if (((num_aio_resv_start + num_aio_procs) < max_aio_procs) &&
|
|
((ki->kaio_active_count + num_aio_resv_start) <
|
|
ki->kaio_maxactive_count)) {
|
|
num_aio_resv_start++;
|
|
mtx_unlock(&aio_job_mtx);
|
|
error = aio_newproc(&num_aio_resv_start);
|
|
mtx_lock(&aio_job_mtx);
|
|
if (error) {
|
|
num_aio_resv_start--;
|
|
goto retryproc;
|
|
}
|
|
} else {
|
|
ret = -1;
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static void
|
|
aio_kick_helper(void *context, int pending)
|
|
{
|
|
struct proc *userp = context;
|
|
|
|
mtx_lock(&aio_job_mtx);
|
|
while (--pending >= 0) {
|
|
if (aio_kick(userp))
|
|
break;
|
|
}
|
|
mtx_unlock(&aio_job_mtx);
|
|
}
|
|
|
|
/*
|
|
* Support the aio_return system call, as a side-effect, kernel resources are
|
|
* released.
|
|
*/
|
|
static int
|
|
kern_aio_return(struct thread *td, struct aiocb *uaiocb, struct aiocb_ops *ops)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
struct aiocblist *cb;
|
|
struct kaioinfo *ki;
|
|
int status, error;
|
|
|
|
ki = p->p_aioinfo;
|
|
if (ki == NULL)
|
|
return (EINVAL);
|
|
AIO_LOCK(ki);
|
|
TAILQ_FOREACH(cb, &ki->kaio_done, plist) {
|
|
if (cb->uuaiocb == uaiocb)
|
|
break;
|
|
}
|
|
if (cb != NULL) {
|
|
MPASS(cb->jobstate == JOBST_JOBFINISHED);
|
|
status = cb->uaiocb._aiocb_private.status;
|
|
error = cb->uaiocb._aiocb_private.error;
|
|
td->td_retval[0] = status;
|
|
if (cb->uaiocb.aio_lio_opcode == LIO_WRITE) {
|
|
td->td_ru.ru_oublock += cb->outputcharge;
|
|
cb->outputcharge = 0;
|
|
} else if (cb->uaiocb.aio_lio_opcode == LIO_READ) {
|
|
td->td_ru.ru_inblock += cb->inputcharge;
|
|
cb->inputcharge = 0;
|
|
}
|
|
aio_free_entry(cb);
|
|
AIO_UNLOCK(ki);
|
|
ops->store_error(uaiocb, error);
|
|
ops->store_status(uaiocb, status);
|
|
} else {
|
|
error = EINVAL;
|
|
AIO_UNLOCK(ki);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_aio_return(struct thread *td, struct aio_return_args *uap)
|
|
{
|
|
|
|
return (kern_aio_return(td, uap->aiocbp, &aiocb_ops));
|
|
}
|
|
|
|
/*
|
|
* Allow a process to wakeup when any of the I/O requests are completed.
|
|
*/
|
|
static int
|
|
kern_aio_suspend(struct thread *td, int njoblist, struct aiocb **ujoblist,
|
|
struct timespec *ts)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
struct timeval atv;
|
|
struct kaioinfo *ki;
|
|
struct aiocblist *cb, *cbfirst;
|
|
int error, i, timo;
|
|
|
|
timo = 0;
|
|
if (ts) {
|
|
if (ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000)
|
|
return (EINVAL);
|
|
|
|
TIMESPEC_TO_TIMEVAL(&atv, ts);
|
|
if (itimerfix(&atv))
|
|
return (EINVAL);
|
|
timo = tvtohz(&atv);
|
|
}
|
|
|
|
ki = p->p_aioinfo;
|
|
if (ki == NULL)
|
|
return (EAGAIN);
|
|
|
|
if (njoblist == 0)
|
|
return (0);
|
|
|
|
AIO_LOCK(ki);
|
|
for (;;) {
|
|
cbfirst = NULL;
|
|
error = 0;
|
|
TAILQ_FOREACH(cb, &ki->kaio_all, allist) {
|
|
for (i = 0; i < njoblist; i++) {
|
|
if (cb->uuaiocb == ujoblist[i]) {
|
|
if (cbfirst == NULL)
|
|
cbfirst = cb;
|
|
if (cb->jobstate == JOBST_JOBFINISHED)
|
|
goto RETURN;
|
|
}
|
|
}
|
|
}
|
|
/* All tasks were finished. */
|
|
if (cbfirst == NULL)
|
|
break;
|
|
|
|
ki->kaio_flags |= KAIO_WAKEUP;
|
|
error = msleep(&p->p_aioinfo, AIO_MTX(ki), PRIBIO | PCATCH,
|
|
"aiospn", timo);
|
|
if (error == ERESTART)
|
|
error = EINTR;
|
|
if (error)
|
|
break;
|
|
}
|
|
RETURN:
|
|
AIO_UNLOCK(ki);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_aio_suspend(struct thread *td, struct aio_suspend_args *uap)
|
|
{
|
|
struct timespec ts, *tsp;
|
|
struct aiocb **ujoblist;
|
|
int error;
|
|
|
|
if (uap->nent < 0 || uap->nent > AIO_LISTIO_MAX)
|
|
return (EINVAL);
|
|
|
|
if (uap->timeout) {
|
|
/* Get timespec struct. */
|
|
if ((error = copyin(uap->timeout, &ts, sizeof(ts))) != 0)
|
|
return (error);
|
|
tsp = &ts;
|
|
} else
|
|
tsp = NULL;
|
|
|
|
ujoblist = uma_zalloc(aiol_zone, M_WAITOK);
|
|
error = copyin(uap->aiocbp, ujoblist, uap->nent * sizeof(ujoblist[0]));
|
|
if (error == 0)
|
|
error = kern_aio_suspend(td, uap->nent, ujoblist, tsp);
|
|
uma_zfree(aiol_zone, ujoblist);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* aio_cancel cancels any non-physio aio operations not currently in
|
|
* progress.
|
|
*/
|
|
int
|
|
sys_aio_cancel(struct thread *td, struct aio_cancel_args *uap)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
struct kaioinfo *ki;
|
|
struct aiocblist *cbe, *cbn;
|
|
struct file *fp;
|
|
struct socket *so;
|
|
cap_rights_t rights;
|
|
int error;
|
|
int remove;
|
|
int cancelled = 0;
|
|
int notcancelled = 0;
|
|
struct vnode *vp;
|
|
|
|
/* Lookup file object. */
|
|
error = fget(td, uap->fd, cap_rights_init(&rights), &fp);
|
|
if (error)
|
|
return (error);
|
|
|
|
ki = p->p_aioinfo;
|
|
if (ki == NULL)
|
|
goto done;
|
|
|
|
if (fp->f_type == DTYPE_VNODE) {
|
|
vp = fp->f_vnode;
|
|
if (vn_isdisk(vp, &error)) {
|
|
fdrop(fp, td);
|
|
td->td_retval[0] = AIO_NOTCANCELED;
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
AIO_LOCK(ki);
|
|
TAILQ_FOREACH_SAFE(cbe, &ki->kaio_jobqueue, plist, cbn) {
|
|
if ((uap->fd == cbe->uaiocb.aio_fildes) &&
|
|
((uap->aiocbp == NULL) ||
|
|
(uap->aiocbp == cbe->uuaiocb))) {
|
|
remove = 0;
|
|
|
|
mtx_lock(&aio_job_mtx);
|
|
if (cbe->jobstate == JOBST_JOBQGLOBAL) {
|
|
TAILQ_REMOVE(&aio_jobs, cbe, list);
|
|
remove = 1;
|
|
} else if (cbe->jobstate == JOBST_JOBQSOCK) {
|
|
MPASS(fp->f_type == DTYPE_SOCKET);
|
|
so = fp->f_data;
|
|
TAILQ_REMOVE(&so->so_aiojobq, cbe, list);
|
|
remove = 1;
|
|
} else if (cbe->jobstate == JOBST_JOBQSYNC) {
|
|
TAILQ_REMOVE(&ki->kaio_syncqueue, cbe, list);
|
|
remove = 1;
|
|
}
|
|
mtx_unlock(&aio_job_mtx);
|
|
|
|
if (remove) {
|
|
TAILQ_REMOVE(&ki->kaio_jobqueue, cbe, plist);
|
|
cbe->uaiocb._aiocb_private.status = -1;
|
|
cbe->uaiocb._aiocb_private.error = ECANCELED;
|
|
aio_bio_done_notify(p, cbe, DONE_QUEUE);
|
|
cancelled++;
|
|
} else {
|
|
notcancelled++;
|
|
}
|
|
if (uap->aiocbp != NULL)
|
|
break;
|
|
}
|
|
}
|
|
AIO_UNLOCK(ki);
|
|
|
|
done:
|
|
fdrop(fp, td);
|
|
|
|
if (uap->aiocbp != NULL) {
|
|
if (cancelled) {
|
|
td->td_retval[0] = AIO_CANCELED;
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
if (notcancelled) {
|
|
td->td_retval[0] = AIO_NOTCANCELED;
|
|
return (0);
|
|
}
|
|
|
|
if (cancelled) {
|
|
td->td_retval[0] = AIO_CANCELED;
|
|
return (0);
|
|
}
|
|
|
|
td->td_retval[0] = AIO_ALLDONE;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* aio_error is implemented in the kernel level for compatibility purposes
|
|
* only. For a user mode async implementation, it would be best to do it in
|
|
* a userland subroutine.
|
|
*/
|
|
static int
|
|
kern_aio_error(struct thread *td, struct aiocb *aiocbp, struct aiocb_ops *ops)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
struct aiocblist *cb;
|
|
struct kaioinfo *ki;
|
|
int status;
|
|
|
|
ki = p->p_aioinfo;
|
|
if (ki == NULL) {
|
|
td->td_retval[0] = EINVAL;
|
|
return (0);
|
|
}
|
|
|
|
AIO_LOCK(ki);
|
|
TAILQ_FOREACH(cb, &ki->kaio_all, allist) {
|
|
if (cb->uuaiocb == aiocbp) {
|
|
if (cb->jobstate == JOBST_JOBFINISHED)
|
|
td->td_retval[0] =
|
|
cb->uaiocb._aiocb_private.error;
|
|
else
|
|
td->td_retval[0] = EINPROGRESS;
|
|
AIO_UNLOCK(ki);
|
|
return (0);
|
|
}
|
|
}
|
|
AIO_UNLOCK(ki);
|
|
|
|
/*
|
|
* Hack for failure of aio_aqueue.
|
|
*/
|
|
status = ops->fetch_status(aiocbp);
|
|
if (status == -1) {
|
|
td->td_retval[0] = ops->fetch_error(aiocbp);
|
|
return (0);
|
|
}
|
|
|
|
td->td_retval[0] = EINVAL;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
sys_aio_error(struct thread *td, struct aio_error_args *uap)
|
|
{
|
|
|
|
return (kern_aio_error(td, uap->aiocbp, &aiocb_ops));
|
|
}
|
|
|
|
/* syscall - asynchronous read from a file (REALTIME) */
|
|
int
|
|
sys_oaio_read(struct thread *td, struct oaio_read_args *uap)
|
|
{
|
|
|
|
return (aio_aqueue(td, (struct aiocb *)uap->aiocbp, NULL, LIO_READ,
|
|
&aiocb_ops_osigevent));
|
|
}
|
|
|
|
int
|
|
sys_aio_read(struct thread *td, struct aio_read_args *uap)
|
|
{
|
|
|
|
return (aio_aqueue(td, uap->aiocbp, NULL, LIO_READ, &aiocb_ops));
|
|
}
|
|
|
|
/* syscall - asynchronous write to a file (REALTIME) */
|
|
int
|
|
sys_oaio_write(struct thread *td, struct oaio_write_args *uap)
|
|
{
|
|
|
|
return (aio_aqueue(td, (struct aiocb *)uap->aiocbp, NULL, LIO_WRITE,
|
|
&aiocb_ops_osigevent));
|
|
}
|
|
|
|
int
|
|
sys_aio_write(struct thread *td, struct aio_write_args *uap)
|
|
{
|
|
|
|
return (aio_aqueue(td, uap->aiocbp, NULL, LIO_WRITE, &aiocb_ops));
|
|
}
|
|
|
|
int
|
|
sys_aio_mlock(struct thread *td, struct aio_mlock_args *uap)
|
|
{
|
|
|
|
return (aio_aqueue(td, uap->aiocbp, NULL, LIO_MLOCK, &aiocb_ops));
|
|
}
|
|
|
|
static int
|
|
kern_lio_listio(struct thread *td, int mode, struct aiocb * const *uacb_list,
|
|
struct aiocb **acb_list, int nent, struct sigevent *sig,
|
|
struct aiocb_ops *ops)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
struct aiocb *iocb;
|
|
struct kaioinfo *ki;
|
|
struct aioliojob *lj;
|
|
struct kevent kev;
|
|
int error;
|
|
int nerror;
|
|
int i;
|
|
|
|
if ((mode != LIO_NOWAIT) && (mode != LIO_WAIT))
|
|
return (EINVAL);
|
|
|
|
if (nent < 0 || nent > AIO_LISTIO_MAX)
|
|
return (EINVAL);
|
|
|
|
if (p->p_aioinfo == NULL)
|
|
aio_init_aioinfo(p);
|
|
|
|
ki = p->p_aioinfo;
|
|
|
|
lj = uma_zalloc(aiolio_zone, M_WAITOK);
|
|
lj->lioj_flags = 0;
|
|
lj->lioj_count = 0;
|
|
lj->lioj_finished_count = 0;
|
|
knlist_init_mtx(&lj->klist, AIO_MTX(ki));
|
|
ksiginfo_init(&lj->lioj_ksi);
|
|
|
|
/*
|
|
* Setup signal.
|
|
*/
|
|
if (sig && (mode == LIO_NOWAIT)) {
|
|
bcopy(sig, &lj->lioj_signal, sizeof(lj->lioj_signal));
|
|
if (lj->lioj_signal.sigev_notify == SIGEV_KEVENT) {
|
|
/* Assume only new style KEVENT */
|
|
kev.filter = EVFILT_LIO;
|
|
kev.flags = EV_ADD | EV_ENABLE | EV_FLAG1;
|
|
kev.ident = (uintptr_t)uacb_list; /* something unique */
|
|
kev.data = (intptr_t)lj;
|
|
/* pass user defined sigval data */
|
|
kev.udata = lj->lioj_signal.sigev_value.sival_ptr;
|
|
error = kqfd_register(
|
|
lj->lioj_signal.sigev_notify_kqueue, &kev, td, 1);
|
|
if (error) {
|
|
uma_zfree(aiolio_zone, lj);
|
|
return (error);
|
|
}
|
|
} else if (lj->lioj_signal.sigev_notify == SIGEV_NONE) {
|
|
;
|
|
} else if (lj->lioj_signal.sigev_notify == SIGEV_SIGNAL ||
|
|
lj->lioj_signal.sigev_notify == SIGEV_THREAD_ID) {
|
|
if (!_SIG_VALID(lj->lioj_signal.sigev_signo)) {
|
|
uma_zfree(aiolio_zone, lj);
|
|
return EINVAL;
|
|
}
|
|
lj->lioj_flags |= LIOJ_SIGNAL;
|
|
} else {
|
|
uma_zfree(aiolio_zone, lj);
|
|
return EINVAL;
|
|
}
|
|
}
|
|
|
|
AIO_LOCK(ki);
|
|
TAILQ_INSERT_TAIL(&ki->kaio_liojoblist, lj, lioj_list);
|
|
/*
|
|
* Add extra aiocb count to avoid the lio to be freed
|
|
* by other threads doing aio_waitcomplete or aio_return,
|
|
* and prevent event from being sent until we have queued
|
|
* all tasks.
|
|
*/
|
|
lj->lioj_count = 1;
|
|
AIO_UNLOCK(ki);
|
|
|
|
/*
|
|
* Get pointers to the list of I/O requests.
|
|
*/
|
|
nerror = 0;
|
|
for (i = 0; i < nent; i++) {
|
|
iocb = acb_list[i];
|
|
if (iocb != NULL) {
|
|
error = aio_aqueue(td, iocb, lj, LIO_NOP, ops);
|
|
if (error != 0)
|
|
nerror++;
|
|
}
|
|
}
|
|
|
|
error = 0;
|
|
AIO_LOCK(ki);
|
|
if (mode == LIO_WAIT) {
|
|
while (lj->lioj_count - 1 != lj->lioj_finished_count) {
|
|
ki->kaio_flags |= KAIO_WAKEUP;
|
|
error = msleep(&p->p_aioinfo, AIO_MTX(ki),
|
|
PRIBIO | PCATCH, "aiospn", 0);
|
|
if (error == ERESTART)
|
|
error = EINTR;
|
|
if (error)
|
|
break;
|
|
}
|
|
} else {
|
|
if (lj->lioj_count - 1 == lj->lioj_finished_count) {
|
|
if (lj->lioj_signal.sigev_notify == SIGEV_KEVENT) {
|
|
lj->lioj_flags |= LIOJ_KEVENT_POSTED;
|
|
KNOTE_LOCKED(&lj->klist, 1);
|
|
}
|
|
if ((lj->lioj_flags & (LIOJ_SIGNAL|LIOJ_SIGNAL_POSTED))
|
|
== LIOJ_SIGNAL
|
|
&& (lj->lioj_signal.sigev_notify == SIGEV_SIGNAL ||
|
|
lj->lioj_signal.sigev_notify == SIGEV_THREAD_ID)) {
|
|
aio_sendsig(p, &lj->lioj_signal,
|
|
&lj->lioj_ksi);
|
|
lj->lioj_flags |= LIOJ_SIGNAL_POSTED;
|
|
}
|
|
}
|
|
}
|
|
lj->lioj_count--;
|
|
if (lj->lioj_count == 0) {
|
|
TAILQ_REMOVE(&ki->kaio_liojoblist, lj, lioj_list);
|
|
knlist_delete(&lj->klist, curthread, 1);
|
|
PROC_LOCK(p);
|
|
sigqueue_take(&lj->lioj_ksi);
|
|
PROC_UNLOCK(p);
|
|
AIO_UNLOCK(ki);
|
|
uma_zfree(aiolio_zone, lj);
|
|
} else
|
|
AIO_UNLOCK(ki);
|
|
|
|
if (nerror)
|
|
return (EIO);
|
|
return (error);
|
|
}
|
|
|
|
/* syscall - list directed I/O (REALTIME) */
|
|
int
|
|
sys_olio_listio(struct thread *td, struct olio_listio_args *uap)
|
|
{
|
|
struct aiocb **acb_list;
|
|
struct sigevent *sigp, sig;
|
|
struct osigevent osig;
|
|
int error, nent;
|
|
|
|
if ((uap->mode != LIO_NOWAIT) && (uap->mode != LIO_WAIT))
|
|
return (EINVAL);
|
|
|
|
nent = uap->nent;
|
|
if (nent < 0 || nent > AIO_LISTIO_MAX)
|
|
return (EINVAL);
|
|
|
|
if (uap->sig && (uap->mode == LIO_NOWAIT)) {
|
|
error = copyin(uap->sig, &osig, sizeof(osig));
|
|
if (error)
|
|
return (error);
|
|
error = convert_old_sigevent(&osig, &sig);
|
|
if (error)
|
|
return (error);
|
|
sigp = &sig;
|
|
} else
|
|
sigp = NULL;
|
|
|
|
acb_list = malloc(sizeof(struct aiocb *) * nent, M_LIO, M_WAITOK);
|
|
error = copyin(uap->acb_list, acb_list, nent * sizeof(acb_list[0]));
|
|
if (error == 0)
|
|
error = kern_lio_listio(td, uap->mode,
|
|
(struct aiocb * const *)uap->acb_list, acb_list, nent, sigp,
|
|
&aiocb_ops_osigevent);
|
|
free(acb_list, M_LIO);
|
|
return (error);
|
|
}
|
|
|
|
/* syscall - list directed I/O (REALTIME) */
|
|
int
|
|
sys_lio_listio(struct thread *td, struct lio_listio_args *uap)
|
|
{
|
|
struct aiocb **acb_list;
|
|
struct sigevent *sigp, sig;
|
|
int error, nent;
|
|
|
|
if ((uap->mode != LIO_NOWAIT) && (uap->mode != LIO_WAIT))
|
|
return (EINVAL);
|
|
|
|
nent = uap->nent;
|
|
if (nent < 0 || nent > AIO_LISTIO_MAX)
|
|
return (EINVAL);
|
|
|
|
if (uap->sig && (uap->mode == LIO_NOWAIT)) {
|
|
error = copyin(uap->sig, &sig, sizeof(sig));
|
|
if (error)
|
|
return (error);
|
|
sigp = &sig;
|
|
} else
|
|
sigp = NULL;
|
|
|
|
acb_list = malloc(sizeof(struct aiocb *) * nent, M_LIO, M_WAITOK);
|
|
error = copyin(uap->acb_list, acb_list, nent * sizeof(acb_list[0]));
|
|
if (error == 0)
|
|
error = kern_lio_listio(td, uap->mode, uap->acb_list, acb_list,
|
|
nent, sigp, &aiocb_ops);
|
|
free(acb_list, M_LIO);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
aio_physwakeup(struct bio *bp)
|
|
{
|
|
struct aiocblist *aiocbe = (struct aiocblist *)bp->bio_caller1;
|
|
struct proc *userp;
|
|
struct kaioinfo *ki;
|
|
int nblks;
|
|
|
|
/* Release mapping into kernel space. */
|
|
if (aiocbe->pbuf) {
|
|
pmap_qremove((vm_offset_t)aiocbe->pbuf->b_data, aiocbe->npages);
|
|
relpbuf(aiocbe->pbuf, NULL);
|
|
aiocbe->pbuf = NULL;
|
|
atomic_subtract_int(&num_buf_aio, 1);
|
|
}
|
|
vm_page_unhold_pages(aiocbe->pages, aiocbe->npages);
|
|
|
|
bp = aiocbe->bp;
|
|
aiocbe->bp = NULL;
|
|
userp = aiocbe->userproc;
|
|
ki = userp->p_aioinfo;
|
|
AIO_LOCK(ki);
|
|
aiocbe->uaiocb._aiocb_private.status -= bp->bio_resid;
|
|
aiocbe->uaiocb._aiocb_private.error = 0;
|
|
if (bp->bio_flags & BIO_ERROR)
|
|
aiocbe->uaiocb._aiocb_private.error = bp->bio_error;
|
|
nblks = btodb(aiocbe->uaiocb.aio_nbytes);
|
|
if (aiocbe->uaiocb.aio_lio_opcode == LIO_WRITE)
|
|
aiocbe->outputcharge += nblks;
|
|
else
|
|
aiocbe->inputcharge += nblks;
|
|
TAILQ_REMOVE(&userp->p_aioinfo->kaio_bufqueue, aiocbe, plist);
|
|
ki->kaio_buffer_count--;
|
|
aio_bio_done_notify(userp, aiocbe, DONE_BUF);
|
|
AIO_UNLOCK(ki);
|
|
|
|
g_destroy_bio(bp);
|
|
}
|
|
|
|
/* syscall - wait for the next completion of an aio request */
|
|
static int
|
|
kern_aio_waitcomplete(struct thread *td, struct aiocb **aiocbp,
|
|
struct timespec *ts, struct aiocb_ops *ops)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
struct timeval atv;
|
|
struct kaioinfo *ki;
|
|
struct aiocblist *cb;
|
|
struct aiocb *uuaiocb;
|
|
int error, status, timo;
|
|
|
|
ops->store_aiocb(aiocbp, NULL);
|
|
|
|
if (ts == NULL) {
|
|
timo = 0;
|
|
} else if (ts->tv_sec == 0 && ts->tv_nsec == 0) {
|
|
timo = -1;
|
|
} else {
|
|
if ((ts->tv_nsec < 0) || (ts->tv_nsec >= 1000000000))
|
|
return (EINVAL);
|
|
|
|
TIMESPEC_TO_TIMEVAL(&atv, ts);
|
|
if (itimerfix(&atv))
|
|
return (EINVAL);
|
|
timo = tvtohz(&atv);
|
|
}
|
|
|
|
if (p->p_aioinfo == NULL)
|
|
aio_init_aioinfo(p);
|
|
ki = p->p_aioinfo;
|
|
|
|
error = 0;
|
|
cb = NULL;
|
|
AIO_LOCK(ki);
|
|
while ((cb = TAILQ_FIRST(&ki->kaio_done)) == NULL) {
|
|
if (timo == -1) {
|
|
error = EWOULDBLOCK;
|
|
break;
|
|
}
|
|
ki->kaio_flags |= KAIO_WAKEUP;
|
|
error = msleep(&p->p_aioinfo, AIO_MTX(ki), PRIBIO | PCATCH,
|
|
"aiowc", timo);
|
|
if (timo && error == ERESTART)
|
|
error = EINTR;
|
|
if (error)
|
|
break;
|
|
}
|
|
|
|
if (cb != NULL) {
|
|
MPASS(cb->jobstate == JOBST_JOBFINISHED);
|
|
uuaiocb = cb->uuaiocb;
|
|
status = cb->uaiocb._aiocb_private.status;
|
|
error = cb->uaiocb._aiocb_private.error;
|
|
td->td_retval[0] = status;
|
|
if (cb->uaiocb.aio_lio_opcode == LIO_WRITE) {
|
|
td->td_ru.ru_oublock += cb->outputcharge;
|
|
cb->outputcharge = 0;
|
|
} else if (cb->uaiocb.aio_lio_opcode == LIO_READ) {
|
|
td->td_ru.ru_inblock += cb->inputcharge;
|
|
cb->inputcharge = 0;
|
|
}
|
|
aio_free_entry(cb);
|
|
AIO_UNLOCK(ki);
|
|
ops->store_aiocb(aiocbp, uuaiocb);
|
|
ops->store_error(uuaiocb, error);
|
|
ops->store_status(uuaiocb, status);
|
|
} else
|
|
AIO_UNLOCK(ki);
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
sys_aio_waitcomplete(struct thread *td, struct aio_waitcomplete_args *uap)
|
|
{
|
|
struct timespec ts, *tsp;
|
|
int error;
|
|
|
|
if (uap->timeout) {
|
|
/* Get timespec struct. */
|
|
error = copyin(uap->timeout, &ts, sizeof(ts));
|
|
if (error)
|
|
return (error);
|
|
tsp = &ts;
|
|
} else
|
|
tsp = NULL;
|
|
|
|
return (kern_aio_waitcomplete(td, uap->aiocbp, tsp, &aiocb_ops));
|
|
}
|
|
|
|
static int
|
|
kern_aio_fsync(struct thread *td, int op, struct aiocb *aiocbp,
|
|
struct aiocb_ops *ops)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
struct kaioinfo *ki;
|
|
|
|
if (op != O_SYNC) /* XXX lack of O_DSYNC */
|
|
return (EINVAL);
|
|
ki = p->p_aioinfo;
|
|
if (ki == NULL)
|
|
aio_init_aioinfo(p);
|
|
return (aio_aqueue(td, aiocbp, NULL, LIO_SYNC, ops));
|
|
}
|
|
|
|
int
|
|
sys_aio_fsync(struct thread *td, struct aio_fsync_args *uap)
|
|
{
|
|
|
|
return (kern_aio_fsync(td, uap->op, uap->aiocbp, &aiocb_ops));
|
|
}
|
|
|
|
/* kqueue attach function */
|
|
static int
|
|
filt_aioattach(struct knote *kn)
|
|
{
|
|
struct aiocblist *aiocbe = (struct aiocblist *)kn->kn_sdata;
|
|
|
|
/*
|
|
* The aiocbe pointer must be validated before using it, so
|
|
* registration is restricted to the kernel; the user cannot
|
|
* set EV_FLAG1.
|
|
*/
|
|
if ((kn->kn_flags & EV_FLAG1) == 0)
|
|
return (EPERM);
|
|
kn->kn_ptr.p_aio = aiocbe;
|
|
kn->kn_flags &= ~EV_FLAG1;
|
|
|
|
knlist_add(&aiocbe->klist, kn, 0);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* kqueue detach function */
|
|
static void
|
|
filt_aiodetach(struct knote *kn)
|
|
{
|
|
struct knlist *knl;
|
|
|
|
knl = &kn->kn_ptr.p_aio->klist;
|
|
knl->kl_lock(knl->kl_lockarg);
|
|
if (!knlist_empty(knl))
|
|
knlist_remove(knl, kn, 1);
|
|
knl->kl_unlock(knl->kl_lockarg);
|
|
}
|
|
|
|
/* kqueue filter function */
|
|
/*ARGSUSED*/
|
|
static int
|
|
filt_aio(struct knote *kn, long hint)
|
|
{
|
|
struct aiocblist *aiocbe = kn->kn_ptr.p_aio;
|
|
|
|
kn->kn_data = aiocbe->uaiocb._aiocb_private.error;
|
|
if (aiocbe->jobstate != JOBST_JOBFINISHED)
|
|
return (0);
|
|
kn->kn_flags |= EV_EOF;
|
|
return (1);
|
|
}
|
|
|
|
/* kqueue attach function */
|
|
static int
|
|
filt_lioattach(struct knote *kn)
|
|
{
|
|
struct aioliojob * lj = (struct aioliojob *)kn->kn_sdata;
|
|
|
|
/*
|
|
* The aioliojob pointer must be validated before using it, so
|
|
* registration is restricted to the kernel; the user cannot
|
|
* set EV_FLAG1.
|
|
*/
|
|
if ((kn->kn_flags & EV_FLAG1) == 0)
|
|
return (EPERM);
|
|
kn->kn_ptr.p_lio = lj;
|
|
kn->kn_flags &= ~EV_FLAG1;
|
|
|
|
knlist_add(&lj->klist, kn, 0);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/* kqueue detach function */
|
|
static void
|
|
filt_liodetach(struct knote *kn)
|
|
{
|
|
struct knlist *knl;
|
|
|
|
knl = &kn->kn_ptr.p_lio->klist;
|
|
knl->kl_lock(knl->kl_lockarg);
|
|
if (!knlist_empty(knl))
|
|
knlist_remove(knl, kn, 1);
|
|
knl->kl_unlock(knl->kl_lockarg);
|
|
}
|
|
|
|
/* kqueue filter function */
|
|
/*ARGSUSED*/
|
|
static int
|
|
filt_lio(struct knote *kn, long hint)
|
|
{
|
|
struct aioliojob * lj = kn->kn_ptr.p_lio;
|
|
|
|
return (lj->lioj_flags & LIOJ_KEVENT_POSTED);
|
|
}
|
|
|
|
#ifdef COMPAT_FREEBSD32
|
|
|
|
struct __aiocb_private32 {
|
|
int32_t status;
|
|
int32_t error;
|
|
uint32_t kernelinfo;
|
|
};
|
|
|
|
typedef struct oaiocb32 {
|
|
int aio_fildes; /* File descriptor */
|
|
uint64_t aio_offset __packed; /* File offset for I/O */
|
|
uint32_t aio_buf; /* I/O buffer in process space */
|
|
uint32_t aio_nbytes; /* Number of bytes for I/O */
|
|
struct osigevent32 aio_sigevent; /* Signal to deliver */
|
|
int aio_lio_opcode; /* LIO opcode */
|
|
int aio_reqprio; /* Request priority -- ignored */
|
|
struct __aiocb_private32 _aiocb_private;
|
|
} oaiocb32_t;
|
|
|
|
typedef struct aiocb32 {
|
|
int32_t aio_fildes; /* File descriptor */
|
|
uint64_t aio_offset __packed; /* File offset for I/O */
|
|
uint32_t aio_buf; /* I/O buffer in process space */
|
|
uint32_t aio_nbytes; /* Number of bytes for I/O */
|
|
int __spare__[2];
|
|
uint32_t __spare2__;
|
|
int aio_lio_opcode; /* LIO opcode */
|
|
int aio_reqprio; /* Request priority -- ignored */
|
|
struct __aiocb_private32 _aiocb_private;
|
|
struct sigevent32 aio_sigevent; /* Signal to deliver */
|
|
} aiocb32_t;
|
|
|
|
static int
|
|
convert_old_sigevent32(struct osigevent32 *osig, struct sigevent *nsig)
|
|
{
|
|
|
|
/*
|
|
* Only SIGEV_NONE, SIGEV_SIGNAL, and SIGEV_KEVENT are
|
|
* supported by AIO with the old sigevent structure.
|
|
*/
|
|
CP(*osig, *nsig, sigev_notify);
|
|
switch (nsig->sigev_notify) {
|
|
case SIGEV_NONE:
|
|
break;
|
|
case SIGEV_SIGNAL:
|
|
nsig->sigev_signo = osig->__sigev_u.__sigev_signo;
|
|
break;
|
|
case SIGEV_KEVENT:
|
|
nsig->sigev_notify_kqueue =
|
|
osig->__sigev_u.__sigev_notify_kqueue;
|
|
PTRIN_CP(*osig, *nsig, sigev_value.sival_ptr);
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
aiocb32_copyin_old_sigevent(struct aiocb *ujob, struct aiocb *kjob)
|
|
{
|
|
struct oaiocb32 job32;
|
|
int error;
|
|
|
|
bzero(kjob, sizeof(struct aiocb));
|
|
error = copyin(ujob, &job32, sizeof(job32));
|
|
if (error)
|
|
return (error);
|
|
|
|
CP(job32, *kjob, aio_fildes);
|
|
CP(job32, *kjob, aio_offset);
|
|
PTRIN_CP(job32, *kjob, aio_buf);
|
|
CP(job32, *kjob, aio_nbytes);
|
|
CP(job32, *kjob, aio_lio_opcode);
|
|
CP(job32, *kjob, aio_reqprio);
|
|
CP(job32, *kjob, _aiocb_private.status);
|
|
CP(job32, *kjob, _aiocb_private.error);
|
|
PTRIN_CP(job32, *kjob, _aiocb_private.kernelinfo);
|
|
return (convert_old_sigevent32(&job32.aio_sigevent,
|
|
&kjob->aio_sigevent));
|
|
}
|
|
|
|
static int
|
|
aiocb32_copyin(struct aiocb *ujob, struct aiocb *kjob)
|
|
{
|
|
struct aiocb32 job32;
|
|
int error;
|
|
|
|
error = copyin(ujob, &job32, sizeof(job32));
|
|
if (error)
|
|
return (error);
|
|
CP(job32, *kjob, aio_fildes);
|
|
CP(job32, *kjob, aio_offset);
|
|
PTRIN_CP(job32, *kjob, aio_buf);
|
|
CP(job32, *kjob, aio_nbytes);
|
|
CP(job32, *kjob, aio_lio_opcode);
|
|
CP(job32, *kjob, aio_reqprio);
|
|
CP(job32, *kjob, _aiocb_private.status);
|
|
CP(job32, *kjob, _aiocb_private.error);
|
|
PTRIN_CP(job32, *kjob, _aiocb_private.kernelinfo);
|
|
return (convert_sigevent32(&job32.aio_sigevent, &kjob->aio_sigevent));
|
|
}
|
|
|
|
static long
|
|
aiocb32_fetch_status(struct aiocb *ujob)
|
|
{
|
|
struct aiocb32 *ujob32;
|
|
|
|
ujob32 = (struct aiocb32 *)ujob;
|
|
return (fuword32(&ujob32->_aiocb_private.status));
|
|
}
|
|
|
|
static long
|
|
aiocb32_fetch_error(struct aiocb *ujob)
|
|
{
|
|
struct aiocb32 *ujob32;
|
|
|
|
ujob32 = (struct aiocb32 *)ujob;
|
|
return (fuword32(&ujob32->_aiocb_private.error));
|
|
}
|
|
|
|
static int
|
|
aiocb32_store_status(struct aiocb *ujob, long status)
|
|
{
|
|
struct aiocb32 *ujob32;
|
|
|
|
ujob32 = (struct aiocb32 *)ujob;
|
|
return (suword32(&ujob32->_aiocb_private.status, status));
|
|
}
|
|
|
|
static int
|
|
aiocb32_store_error(struct aiocb *ujob, long error)
|
|
{
|
|
struct aiocb32 *ujob32;
|
|
|
|
ujob32 = (struct aiocb32 *)ujob;
|
|
return (suword32(&ujob32->_aiocb_private.error, error));
|
|
}
|
|
|
|
static int
|
|
aiocb32_store_kernelinfo(struct aiocb *ujob, long jobref)
|
|
{
|
|
struct aiocb32 *ujob32;
|
|
|
|
ujob32 = (struct aiocb32 *)ujob;
|
|
return (suword32(&ujob32->_aiocb_private.kernelinfo, jobref));
|
|
}
|
|
|
|
static int
|
|
aiocb32_store_aiocb(struct aiocb **ujobp, struct aiocb *ujob)
|
|
{
|
|
|
|
return (suword32(ujobp, (long)ujob));
|
|
}
|
|
|
|
static struct aiocb_ops aiocb32_ops = {
|
|
.copyin = aiocb32_copyin,
|
|
.fetch_status = aiocb32_fetch_status,
|
|
.fetch_error = aiocb32_fetch_error,
|
|
.store_status = aiocb32_store_status,
|
|
.store_error = aiocb32_store_error,
|
|
.store_kernelinfo = aiocb32_store_kernelinfo,
|
|
.store_aiocb = aiocb32_store_aiocb,
|
|
};
|
|
|
|
static struct aiocb_ops aiocb32_ops_osigevent = {
|
|
.copyin = aiocb32_copyin_old_sigevent,
|
|
.fetch_status = aiocb32_fetch_status,
|
|
.fetch_error = aiocb32_fetch_error,
|
|
.store_status = aiocb32_store_status,
|
|
.store_error = aiocb32_store_error,
|
|
.store_kernelinfo = aiocb32_store_kernelinfo,
|
|
.store_aiocb = aiocb32_store_aiocb,
|
|
};
|
|
|
|
int
|
|
freebsd32_aio_return(struct thread *td, struct freebsd32_aio_return_args *uap)
|
|
{
|
|
|
|
return (kern_aio_return(td, (struct aiocb *)uap->aiocbp, &aiocb32_ops));
|
|
}
|
|
|
|
int
|
|
freebsd32_aio_suspend(struct thread *td, struct freebsd32_aio_suspend_args *uap)
|
|
{
|
|
struct timespec32 ts32;
|
|
struct timespec ts, *tsp;
|
|
struct aiocb **ujoblist;
|
|
uint32_t *ujoblist32;
|
|
int error, i;
|
|
|
|
if (uap->nent < 0 || uap->nent > AIO_LISTIO_MAX)
|
|
return (EINVAL);
|
|
|
|
if (uap->timeout) {
|
|
/* Get timespec struct. */
|
|
if ((error = copyin(uap->timeout, &ts32, sizeof(ts32))) != 0)
|
|
return (error);
|
|
CP(ts32, ts, tv_sec);
|
|
CP(ts32, ts, tv_nsec);
|
|
tsp = &ts;
|
|
} else
|
|
tsp = NULL;
|
|
|
|
ujoblist = uma_zalloc(aiol_zone, M_WAITOK);
|
|
ujoblist32 = (uint32_t *)ujoblist;
|
|
error = copyin(uap->aiocbp, ujoblist32, uap->nent *
|
|
sizeof(ujoblist32[0]));
|
|
if (error == 0) {
|
|
for (i = uap->nent; i > 0; i--)
|
|
ujoblist[i] = PTRIN(ujoblist32[i]);
|
|
|
|
error = kern_aio_suspend(td, uap->nent, ujoblist, tsp);
|
|
}
|
|
uma_zfree(aiol_zone, ujoblist);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
freebsd32_aio_cancel(struct thread *td, struct freebsd32_aio_cancel_args *uap)
|
|
{
|
|
|
|
return (sys_aio_cancel(td, (struct aio_cancel_args *)uap));
|
|
}
|
|
|
|
int
|
|
freebsd32_aio_error(struct thread *td, struct freebsd32_aio_error_args *uap)
|
|
{
|
|
|
|
return (kern_aio_error(td, (struct aiocb *)uap->aiocbp, &aiocb32_ops));
|
|
}
|
|
|
|
int
|
|
freebsd32_oaio_read(struct thread *td, struct freebsd32_oaio_read_args *uap)
|
|
{
|
|
|
|
return (aio_aqueue(td, (struct aiocb *)uap->aiocbp, NULL, LIO_READ,
|
|
&aiocb32_ops_osigevent));
|
|
}
|
|
|
|
int
|
|
freebsd32_aio_read(struct thread *td, struct freebsd32_aio_read_args *uap)
|
|
{
|
|
|
|
return (aio_aqueue(td, (struct aiocb *)uap->aiocbp, NULL, LIO_READ,
|
|
&aiocb32_ops));
|
|
}
|
|
|
|
int
|
|
freebsd32_oaio_write(struct thread *td, struct freebsd32_oaio_write_args *uap)
|
|
{
|
|
|
|
return (aio_aqueue(td, (struct aiocb *)uap->aiocbp, NULL, LIO_WRITE,
|
|
&aiocb32_ops_osigevent));
|
|
}
|
|
|
|
int
|
|
freebsd32_aio_write(struct thread *td, struct freebsd32_aio_write_args *uap)
|
|
{
|
|
|
|
return (aio_aqueue(td, (struct aiocb *)uap->aiocbp, NULL, LIO_WRITE,
|
|
&aiocb32_ops));
|
|
}
|
|
|
|
int
|
|
freebsd32_aio_mlock(struct thread *td, struct freebsd32_aio_mlock_args *uap)
|
|
{
|
|
|
|
return (aio_aqueue(td, (struct aiocb *)uap->aiocbp, NULL, LIO_MLOCK,
|
|
&aiocb32_ops));
|
|
}
|
|
|
|
int
|
|
freebsd32_aio_waitcomplete(struct thread *td,
|
|
struct freebsd32_aio_waitcomplete_args *uap)
|
|
{
|
|
struct timespec32 ts32;
|
|
struct timespec ts, *tsp;
|
|
int error;
|
|
|
|
if (uap->timeout) {
|
|
/* Get timespec struct. */
|
|
error = copyin(uap->timeout, &ts32, sizeof(ts32));
|
|
if (error)
|
|
return (error);
|
|
CP(ts32, ts, tv_sec);
|
|
CP(ts32, ts, tv_nsec);
|
|
tsp = &ts;
|
|
} else
|
|
tsp = NULL;
|
|
|
|
return (kern_aio_waitcomplete(td, (struct aiocb **)uap->aiocbp, tsp,
|
|
&aiocb32_ops));
|
|
}
|
|
|
|
int
|
|
freebsd32_aio_fsync(struct thread *td, struct freebsd32_aio_fsync_args *uap)
|
|
{
|
|
|
|
return (kern_aio_fsync(td, uap->op, (struct aiocb *)uap->aiocbp,
|
|
&aiocb32_ops));
|
|
}
|
|
|
|
int
|
|
freebsd32_olio_listio(struct thread *td, struct freebsd32_olio_listio_args *uap)
|
|
{
|
|
struct aiocb **acb_list;
|
|
struct sigevent *sigp, sig;
|
|
struct osigevent32 osig;
|
|
uint32_t *acb_list32;
|
|
int error, i, nent;
|
|
|
|
if ((uap->mode != LIO_NOWAIT) && (uap->mode != LIO_WAIT))
|
|
return (EINVAL);
|
|
|
|
nent = uap->nent;
|
|
if (nent < 0 || nent > AIO_LISTIO_MAX)
|
|
return (EINVAL);
|
|
|
|
if (uap->sig && (uap->mode == LIO_NOWAIT)) {
|
|
error = copyin(uap->sig, &osig, sizeof(osig));
|
|
if (error)
|
|
return (error);
|
|
error = convert_old_sigevent32(&osig, &sig);
|
|
if (error)
|
|
return (error);
|
|
sigp = &sig;
|
|
} else
|
|
sigp = NULL;
|
|
|
|
acb_list32 = malloc(sizeof(uint32_t) * nent, M_LIO, M_WAITOK);
|
|
error = copyin(uap->acb_list, acb_list32, nent * sizeof(uint32_t));
|
|
if (error) {
|
|
free(acb_list32, M_LIO);
|
|
return (error);
|
|
}
|
|
acb_list = malloc(sizeof(struct aiocb *) * nent, M_LIO, M_WAITOK);
|
|
for (i = 0; i < nent; i++)
|
|
acb_list[i] = PTRIN(acb_list32[i]);
|
|
free(acb_list32, M_LIO);
|
|
|
|
error = kern_lio_listio(td, uap->mode,
|
|
(struct aiocb * const *)uap->acb_list, acb_list, nent, sigp,
|
|
&aiocb32_ops_osigevent);
|
|
free(acb_list, M_LIO);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
freebsd32_lio_listio(struct thread *td, struct freebsd32_lio_listio_args *uap)
|
|
{
|
|
struct aiocb **acb_list;
|
|
struct sigevent *sigp, sig;
|
|
struct sigevent32 sig32;
|
|
uint32_t *acb_list32;
|
|
int error, i, nent;
|
|
|
|
if ((uap->mode != LIO_NOWAIT) && (uap->mode != LIO_WAIT))
|
|
return (EINVAL);
|
|
|
|
nent = uap->nent;
|
|
if (nent < 0 || nent > AIO_LISTIO_MAX)
|
|
return (EINVAL);
|
|
|
|
if (uap->sig && (uap->mode == LIO_NOWAIT)) {
|
|
error = copyin(uap->sig, &sig32, sizeof(sig32));
|
|
if (error)
|
|
return (error);
|
|
error = convert_sigevent32(&sig32, &sig);
|
|
if (error)
|
|
return (error);
|
|
sigp = &sig;
|
|
} else
|
|
sigp = NULL;
|
|
|
|
acb_list32 = malloc(sizeof(uint32_t) * nent, M_LIO, M_WAITOK);
|
|
error = copyin(uap->acb_list, acb_list32, nent * sizeof(uint32_t));
|
|
if (error) {
|
|
free(acb_list32, M_LIO);
|
|
return (error);
|
|
}
|
|
acb_list = malloc(sizeof(struct aiocb *) * nent, M_LIO, M_WAITOK);
|
|
for (i = 0; i < nent; i++)
|
|
acb_list[i] = PTRIN(acb_list32[i]);
|
|
free(acb_list32, M_LIO);
|
|
|
|
error = kern_lio_listio(td, uap->mode,
|
|
(struct aiocb * const *)uap->acb_list, acb_list, nent, sigp,
|
|
&aiocb32_ops);
|
|
free(acb_list, M_LIO);
|
|
return (error);
|
|
}
|
|
|
|
#endif
|