3fac94ba94
These probes are most useful when looking into the structures
they provide, which are listed in io.d. For example:
dtrace -n 'io:genunix::start { printf("%d\n", args[0]->bio_bcount); }'
Note that the I/O systems in FreeBSD and Solaris/Illumos are sufficiently
different that there is not a 1:1 mapping from scripts that work
with one to the other.
MFC after: 1 month
111 lines
3.9 KiB
D
111 lines
3.9 KiB
D
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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* $FreeBSD$
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*/
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/*
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* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#pragma ident "%Z%%M% %I% %E% SMI"
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#pragma D depends_on provider io
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typedef struct devinfo {
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int dev_major; /* major number */
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int dev_minor; /* minor number */
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int dev_instance; /* instance number */
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string dev_name; /* name of device */
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string dev_statname; /* name of device + instance/minor */
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string dev_pathname; /* pathname of device */
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} devinfo_t;
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#pragma D binding "1.0" translator
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translator devinfo_t < struct devstat *D > {
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dev_major = D->device_number;
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dev_minor = D->unit_number;
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dev_instance = 0;
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dev_name = stringof(D->device_name);
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dev_statname = stringof(D->device_name);
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dev_pathname = stringof(D->device_name);
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};
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typedef struct bufinfo {
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int b_flags; /* flags */
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long b_bcount; /* number of bytes */
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caddr_t b_addr; /* buffer address */
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uint64_t b_blkno; /* expanded block # on device */
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uint64_t b_lblkno; /* block # on device */
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size_t b_resid; /* # of bytes not transferred */
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size_t b_bufsize; /* size of allocated buffer */
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/* caddr_t b_iodone; I/O completion routine */
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int b_error; /* expanded error field */
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/* dev_t b_edev; extended device */
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} bufinfo_t;
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#pragma D binding "1.0" translator
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translator bufinfo_t < struct bio *B > {
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b_flags = B->bio_flags;
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b_bcount = B->bio_bcount;
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b_addr = B->bio_data;
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b_blkno = 0;
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b_lblkno = 0;
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b_resid = B->bio_resid;
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b_bufsize = 0; /* XXX gnn */
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b_error = B->bio_error;
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};
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/*
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* The following inline constants can be used to examine fi_oflags when using
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* the fds[] array or a translated fileinfo_t. Note that the various open
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* flags behave as a bit-field *except* for O_RDONLY, O_WRONLY, and O_RDWR.
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* To test the open mode, you write code similar to that used with the fcntl(2)
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* F_GET[X]FL command, such as: if ((fi_oflags & O_ACCMODE) == O_WRONLY).
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*/
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inline int O_ACCMODE = 0x0003;
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#pragma D binding "1.1" O_ACCMODE
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inline int O_RDONLY = 0x0000;
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#pragma D binding "1.1" O_RDONLY
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inline int O_WRONLY = 0x0001;
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#pragma D binding "1.1" O_WRONLY
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inline int O_RDWR = 0x0002;
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#pragma D binding "1.1" O_RDWR
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inline int O_APPEND = 0x0008;
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#pragma D binding "1.1" O_APPEND
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inline int O_CREAT = 0x0200;
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#pragma D binding "1.1" O_CREAT
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inline int O_EXCL = 0x0800;
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#pragma D binding "1.1" O_EXCL
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inline int O_NOCTTY = 0x8000;
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#pragma D binding "1.1" O_NOCTTY
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inline int O_NONBLOCK = 0x0004;
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#pragma D binding "1.1" O_NONBLOCK
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inline int O_NDELAY = 0x0004;
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#pragma D binding "1.1" O_NDELAY
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inline int O_SYNC = 0x0080;
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#pragma D binding "1.1" O_SYNC
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inline int O_TRUNC = 0x0400;
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#pragma D binding "1.1" O_TRUNC
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