a061d97027
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303 lines
8.1 KiB
Bash
303 lines
8.1 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 VOP_RENAME(9) [or similar] entry $
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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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# Print filesystem paths being renamed by VOP_RENAME(9) [or similar]
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# NB: All paths are shown even if error prevents their rename.
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#
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############################################################ PROBE
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: ${PROBE:=vfs:vop:$PROFILE:entry}
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############################################################ ACTIONS
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exec 9<<EOF
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$PROBE /* probe ID $ID */
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{${TRACE:+
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printf("<$ID>");}
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this->fvp = args[1] ? args[1]->a_fdvp : NULL;
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this->fncp = this->fvp != NULL ?
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this->fvp->v_cache_dst.tqh_first : 0;
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this->ffi_name = args[1] ? (
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args[1]->a_fcnp != NULL ?
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stringof(args[1]->a_fcnp->cn_nameptr) : ""
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) : "";
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this->fmount = this->fvp != NULL ?
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this->fvp->v_mount : NULL; /* ptr to vfs we are in */
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this->ffi_fs = this->fmount != NULL ?
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stringof(this->fmount->mnt_stat.f_fstypename) : "";
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this->ffi_mount = this->fmount != NULL ?
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stringof(this->fmount->mnt_stat.f_mntonname) : "";
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this->fd_name = args[0]->v_cache_dd != NULL ?
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stringof(args[0]->v_cache_dd->nc_name) : "";
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this->tvp = args[1] ? args[1]->a_tdvp : NULL;
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this->tncp = this->tvp != NULL ?
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this->tvp->v_cache_dst.tqh_first : 0;
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this->tfi_name = args[1] ? (
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args[1]->a_tcnp != NULL ?
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stringof(args[1]->a_tcnp->cn_nameptr) : ""
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) : "";
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this->tmount = this->tvp != NULL ?
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this->tvp->v_mount : NULL; /* ptr to vfs we are in */
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this->tfi_fs = this->tmount != NULL ?
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stringof(this->tmount->mnt_stat.f_fstypename) : "";
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this->tfi_mount = this->tmount != NULL ?
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stringof(this->tmount->mnt_stat.f_mntonname) : "";
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this->td_name = this->tvp != NULL ? (
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this->tvp->v_cache_dd != NULL ?
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stringof(this->tvp->v_cache_dd->nc_name) : ""
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) : "";
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$( awk -v MAX_DEPTH=$MAX_DEPTH '
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{ sub(/^\\\t/, "\t") }
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{ buf = buf "\t" $0 "\n" }
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END {
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sub(/\n$/, "", buf)
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$0 = buf
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sub(/^[[:space:]]*/, "")
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for (DEPTH = 1; DEPTH <= MAX_DEPTH + 1; DEPTH++) {
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gsub(/DEPTH/, DEPTH)
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print
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$0 = buf
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}
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}
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' <<-EOFDEPTH
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this->fnameDEPTH = this->tnameDEPTH = "";
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EOFDEPTH
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)
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}
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$PROBE /this->fvp == 0 || this->ffi_fs == 0 ||
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this->ffi_fs == "devfs" || this->ffi_fs == "" ||
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this->ffi_name == ""/ /* probe ID $(( $ID + 1 )) */
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{${TRACE:+
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printf("<$(( $ID + 1 ))>");}
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this->fncp = 0;
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}
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$PROBE /this->tvp == 0 || this->tfi_fs == 0 ||
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this->tfi_fs == "devfs" || this->tfi_fs == "" ||
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this->tfi_name == ""/ /* probe ID $(( $ID + 2 )) */
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{${TRACE:+
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printf("<$(( $ID + 2 ))>");}
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this->tncp = 0;
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}
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/*********************************************************/
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$PROBE /this->fncp/ /* probe ID $(( $ID + 3 )) (depth 1) */
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{${TRACE:+
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printf("<$(( $ID + 3 ))>");}
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this->fdvp = this->fncp->nc_dvp != NULL ?
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this->fncp->nc_dvp->v_cache_dst.tqh_first : 0;
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this->fname1 = this->fdvp != 0 ? (
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this->fdvp->nc_name != 0 ? stringof(this->fdvp->nc_name) : ""
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) : "";
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}
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$PROBE /this->tncp/ /* probe ID $(( $ID + 4 )) (depth 1) */
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{${TRACE:+
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printf("<$(( $ID + 4 ))>");}
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this->tdvp = this->tncp->nc_dvp != NULL ?
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this->tncp->nc_dvp->v_cache_dst.tqh_first : 0;
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this->tname1 = this->tdvp != 0 ? (
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this->tdvp->nc_name != 0 ? stringof(this->tdvp->nc_name) : ""
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) : "";
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}
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$PROBE /this->fname1 == 0 || this->ffi_fs == 0 ||
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this->ffi_fs == "devfs" || this->ffi_fs == "" ||
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this->fname1 == "/" || this->fname1 == ""/ /* probe ID $((
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$ID + 5
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)) */
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{${TRACE:+
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printf("<$(( $ID + 5 ))>");}
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this->fdvp = 0;
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}
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$PROBE /this->tname1 == 0 || this->tfi_fs == 0 ||
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this->tfi_fs == "devfs" || this->tfi_fs == "" ||
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this->tname1 == "/" || this->tname1 == ""/ /* probe ID $((
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$ID + 6
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)) */
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{${TRACE:+
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printf("<$(( $ID + 6 ))>");}
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this->tdvp = 0;
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}
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/*********************************************************/
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/*
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* BEGIN Pathname-depth iterators
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*/
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$( awk -v ID=$(( $ID + 7 )) -v MAX_DEPTH=$MAX_DEPTH '
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{ buf = buf $0 "\n" }
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END {
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sub(/\n$/, "", buf)
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for (DEPTH = 2; DEPTH <= MAX_DEPTH; DEPTH++) {
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$0 = buf
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gsub(/DEPTH/, DEPTH)
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gsub(/IDNUM1/, ID)
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gsub(/IDNUM2/, ID + 1)
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print
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ID = ID + 2
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}
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}
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' <<EOFDEPTH
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$PROBE /this->fdvp/ /* probe ID IDNUM1 (depth DEPTH) */
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{${TRACE:+
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printf("<IDNUM1>");}
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this->fdvp = this->fdvp->nc_dvp != NULL ?
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this->fdvp->nc_dvp->v_cache_dst.tqh_first : 0;
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this->fnameDEPTH = this->fdvp != 0 ? (
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this->fdvp->nc_name != 0 ? stringof(this->fdvp->nc_name) : ""
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) : "";
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}
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$PROBE /this->tdvp/ /* probe ID IDNUM2 (depth DEPTH) */
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{${TRACE:+
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printf("<IDNUM2>");}
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this->tdvp = this->tdvp->nc_dvp != NULL ?
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this->tdvp->nc_dvp->v_cache_dst.tqh_first : 0;
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this->tnameDEPTH = this->tdvp != 0 ? (
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this->tdvp->nc_name != 0 ? stringof(this->tdvp->nc_name) : ""
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) : "";
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}
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EOFDEPTH
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)
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$PROBE /this->fdvp/ /* probe ID $(( $ID + $MAX_DEPTH * 2 + 5 )) */
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{${TRACE:+
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printf("<$(( $ID + $MAX_DEPTH * 2 + 5 ))>");}
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this->fdvp = this->fdvp->nc_dvp != NULL ?
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this->fdvp->nc_dvp->v_cache_dst.tqh_first : 0;
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this->fname$(( $MAX_DEPTH + 1 )) = this->fdvp != 0 ? (
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this->fdvp->nc_dvp != NULL ? "..." : ""
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) : "";
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}
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$PROBE /this->tdvp/ /* probe ID $(( $ID + $MAX_DEPTH * 2 + 6 )) */
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{${TRACE:+
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printf("<$(( $ID + $MAX_DEPTH * 2 + 6 ))>");}
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this->tdvp = this->tdvp->nc_dvp != NULL ?
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this->tdvp->nc_dvp->v_cache_dst.tqh_first : 0;
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this->tname$(( $MAX_DEPTH + 1 )) = this->tdvp != 0 ? (
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this->tdvp->nc_dvp != NULL ? "..." : ""
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) : "";
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}
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/*
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* END Pathname-depth iterators
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*/
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/*********************************************************/
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$PROBE /this->ffi_mount != 0 && this->tfi_mount != 0/ /* probe ID $((
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$ID + $MAX_DEPTH * 2 + 7
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)) */
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{${TRACE:+
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printf("<$(( $ID + $MAX_DEPTH * 2 + 7 ))>");
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}
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/*
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* Join 'from' full path
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* NB: Up-to but not including the parent directory (joined below)
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*/
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this->fpath = this->ffi_mount;
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this->fpath = strjoin(this->fpath, this->ffi_mount != 0 ? (
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this->ffi_mount == "/" ? "" : "/"
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) : "/");
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$( awk -v MAX_DEPTH=$MAX_DEPTH '
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{ sub(/^\\\t/, "\t") }
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{ buf = buf "\t" $0 "\n" }
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END {
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sub(/\n$/, "", buf)
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$0 = buf
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sub(/^[[:space:]]*/, "")
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for (N = MAX_DEPTH + 1; N > 0; N--) {
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gsub(/N/, N)
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print
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$0 = buf
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}
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}
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' <<-EOFDEPTH
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this->fpath = strjoin(this->fpath,
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\ strjoin(this->fnameN, this->fnameN != "" ? "/" : ""));
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EOFDEPTH
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)
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/* Join the 'from' parent directory name */
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this->fpath = strjoin(this->fpath, strjoin(this->fname =
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(this->fd_name != 0 ? this->fd_name : ""),
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this->fname != "" ? "/" : ""));
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/* Join the 'from' entry name */
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this->fpath = strjoin(this->fpath,
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this->fname = (this->ffi_name != 0 ? this->ffi_name : ""));
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/*
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* Join 'to' full path
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* NB: Up-to but not including the parent directory (joined below)
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*/
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this->tpath = this->tfi_mount;
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this->tpath = strjoin(this->tpath, this->tfi_mount != 0 ? (
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this->tfi_mount == "/" ? "" : "/"
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) : "/");
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$( awk -v MAX_DEPTH=$MAX_DEPTH '
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{ sub(/^\\\t/, "\t") }
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{ buf = buf "\t" $0 "\n" }
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END {
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sub(/\n$/, "", buf)
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$0 = buf
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sub(/^[[:space:]]*/, "")
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for (N = MAX_DEPTH + 1; N > 0; N--) {
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gsub(/N/, N)
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print
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$0 = buf
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}
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}
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' <<-EOFDEPTH
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this->tpath = strjoin(this->tpath,
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\ strjoin(this->tnameN, this->tnameN != "" ? "/" : ""));
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EOFDEPTH
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)
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/* Join the 'to' parent directory name */
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this->tpath = strjoin(this->tpath, strjoin(this->tname =
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(this->td_name != 0 ? this->td_name : ""),
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this->tname != "" ? "/" : ""));
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/* Join the 'to' entry name */
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this->tpath = strjoin(this->tpath,
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this->tname = (this->tfi_name != 0 ? this->tfi_name : ""));
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}
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EOF
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ACTIONS=$( cat <&9 )
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ID=$(( $ID + $MAX_DEPTH * 2 + 8 ))
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############################################################ EVENT ACTION
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EVENT_TEST="this->ffi_mount != 0 && this->tfi_mount != 0"
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############################################################ EVENT DETAILS
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if [ ! "$CUSTOM_DETAILS" ]; then
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exec 9<<EOF
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/*
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* Print 'from' and 'to' full paths
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*/
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printf("%s -> %s", this->fpath, this->tpath);
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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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