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a061d97027
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108 lines
3.1 KiB
Bash
108 lines
3.1 KiB
Bash
# -*- tab-width: 4 -*- ;; Emacs
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# vi: set filetype=sh tabstop=8 shiftwidth=8 noexpandtab :: Vi/ViM
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############################################################ IDENT(1)
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#
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# $Title: dwatch(8) module for dtrace_io(4) $
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# $Copyright: 2014-2018 Devin Teske. All rights reserved. $
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# $FreeBSD$
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#
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############################################################ DESCRIPTION
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#
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# Display activity related to disk I/O
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#
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############################################################ PROBE
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case "$PROFILE" in
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io) : ${PROBE:=io:::start, io:::done} ;;
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*) : ${PROBE:=io:::${PROFILE#io-}}
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esac
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############################################################ EVENT ACTION
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[ "$CUSTOM_TEST" ] || EVENT_TEST='this->devinfo.dev_name != ""'
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############################################################ ACTIONS
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exec 9<<EOF
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this bufinfo_t bufinfo;
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this devinfo_t devinfo;
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this int b_flags;
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this long bio_length;
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this string bio_cmd;
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this string bio_flags;
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this string device_entry;
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this string device_if;
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this string device_type;
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this string flow;
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inline string append_bio_flag[int flags, int flag] = this->bio_flags =
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strjoin(this->bio_flags,
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strjoin(this->bio_flags == "" ? "" : (flags & flag) == flag ? "|" : "",
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bio_flag_string[flags & flag]));
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$PROBE /(struct bio *)args[0] != NULL/ /* probe ID $ID */
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{${TRACE:+
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printf("<$ID>");
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}
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/*
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* dtrace_io(4)
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*/
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this->flow = probefunc == "done" ? "<-" : "->";
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/*
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* struct bio *
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*/
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this->bufinfo = xlate <bufinfo_t> ((struct bio *)args[0]);
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this->bio_cmd = bio_cmd_string[(int)this->bufinfo.b_cmd];
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this->b_flags = (int)this->bufinfo.b_flags;
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this->bio_flags = bio_flag_string[this->b_flags & BIO_ERROR];
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this->bio_flags = strjoin(this->bio_flags, this->bufinfo.b_error ?
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strjoin(this->bio_flags == "" ?
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bio_flag_string[BIO_ERROR] : "",
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strjoin("#", lltostr(this->bufinfo.b_error))) :
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"");
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append_bio_flag[this->b_flags, BIO_DONE];
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append_bio_flag[this->b_flags, BIO_ONQUEUE];
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append_bio_flag[this->b_flags, BIO_ORDERED];
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append_bio_flag[this->b_flags, BIO_UNMAPPED];
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append_bio_flag[this->b_flags, BIO_TRANSIENT_MAPPING];
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append_bio_flag[this->b_flags, BIO_VLIST];
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this->bio_flags = this->bio_flags == "" ? "-" : this->bio_flags;
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this->bio_length = (long)this->bufinfo.b_bcount;
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/*
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* struct devstat *
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*/
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this->devinfo = xlate <devinfo_t> ((struct devstat *)args[1]);
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this->device_type = device_type[(int)this->devinfo.dev_type];
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this->device_if = device_if[(int)this->devinfo.dev_type];
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this->device_entry = strjoin(this->devinfo.dev_name,
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lltostr(this->devinfo.dev_minor));
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}
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EOF
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ACTIONS=$( cat <&9 )
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ID=$(( $ID + 1 ))
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############################################################ EVENT DETAILS
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if [ ! "$CUSTOM_DETAILS" ]; then
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exec 9<<EOF
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/*
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* Print disk I/O details
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*/
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printf("%s %s %s %s %s %s %d byte%s",
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this->flow,
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this->device_type,
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this->device_if,
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this->device_entry,
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this->bio_cmd,
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this->bio_flags,
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this->bio_length,
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this->bio_length == 1 ? "" : "s");
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EOF
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EVENT_DETAILS=$( cat <&9 )
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fi
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################################################################################
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# END
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################################################################################
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