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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ#!/usr/bin/perl # # shared.pl -- sample Perl 5 script to list processes that share # file descriptors or files, using `lsof +ffn -F..." # output # # Usage: shared [fd|file] # # where: fd to list file descriptors (default) # # file to list files # # This script has been tested under perl version 5.001e. # IMPORTANT DEFINITIONS # ===================== # # 1. Set the interpreter line of this script to the local path of the # Perl5 executable. # Copyright 1998 Purdue Research Foundation, West Lafayette, Indiana # 47907. All rights reserved. # # Written by Victor A. Abell # # This software is not subject to any license of the American Telephone # and Telegraph Company or the Regents of the University of California. # # Permission is granted to anyone to use this software for any purpose on # any computer system, and to alter it and redistribute it freely, subject # to the following restrictions: # # 1. Neither the authors nor Purdue University are responsible for any # consequences of the use of this software. # # 2. The origin of this software must not be misrepresented, either by # explicit claim or by omission. Credit to the authors and Purdue # University must appear in documentation and sources. # # 3. Altered versions must be plainly marked as such, and must not be # misrepresented as being the original software. # # 4. This notice may not be removed or altered. # Initialize variables. $Access = $Devch = $Devn = $Fd = $Fsa = $Inode = $Lock = # file $Na = $Name = ""; # | descriptor $Cmd = $Login = $Pgrp = $Pid = $Ppid = $Uid = ""; # process var. $Fdst = 0; # fd state $Hdr = 0; # header state $Offset = $Proto = $Size = $State = $Stream = $Type = ""; # | variables $Pidst = 0; # process state $Pn = "shared"; # Set path to lsof. if (($LSOF = &isexec("../lsof")) eq "") { # Try .. first if (($LSOF = &isexec("lsof")) eq "") { # Then try . and $PATH print "can't execute $LSOF\n"; exit 1 } } # Define print field constants. $CmdTtl = "CMD"; $CmdW = length($CmdTtl); $DevTtl = "DEVICE"; $DevW = length($DevTtl); $FdTtl = "FD"; $FdW = length($FdTtl); $InoTtl = "NODE"; $InoW = length($InoTtl); $KeyTtl = "FILEADDR"; $KeyW = length($KeyTtl); $PidTtl = "PID"; $PidW = length($PidTtl); $PpidTtl = "PPID"; $PpidW = length(PpidTtl); # Process one (optional) argument. if ($#ARGV >= 0) { $err = 0; if ($#ARGV > 1) { $err = 1; } elsif ($ARGV[0] eq "fd") { $KeyTtl = "FILEADDR"; $Shfd = 1; $Shfile = 0; } elsif ($ARGV[0] eq "file") { $KeyTtl = "NODEID"; $Shfd = 0; $Shfile = 1; } else { $err = 1; } if ($err) { die "$Pn: usage [fd|file]\n"; } shift; } else { $Shfd = 1; $Shfile = 0; } $KeyW = length($KeyTtl); # Open a pipe from lsof. if (!open(LSOF_PIPE, "$LSOF -R +ffn -F0pcRDfFinN |")) { die "$Pn: can't open pipe to: $LSOF\n"; } # Process the lsof output a line at a time, gathering the variables for # processes and files. while () { chop; @F = split('\0', $_, 999); if ($F[0] =~ /^p/) { # A process set begins with a PID field whose ID character is `p'. if ($Fdst) { &End_fd } if ($Pidst) { &End_proc } foreach $i (0 .. ($#F - 1)) { PROC: { if ($F[$i] =~ /^c(.*)/) { $Cmd = $1; last PROC } if ($F[$i] =~ /^g(.*)/) { $Pgrp = $1; last PROC } if ($F[$i] =~ /^p(.*)/) { $Pid = $1; last PROC } if ($F[$i] =~ /^u(.*)/) { $Uid = $1; last PROC } if ($F[$i] =~ /^L(.*)/) { $Login = $1; last PROC } if ($F[$i] =~ /^R(.*)/) { $Ppid = $1; last PROC } print "ERROR: unrecognized process field: \"$F[$i]\"\n"; } } $Pidst = 1; next; } # A file descriptor set begins with a file descriptor field whose ID # character is `f'. if ($F[0] =~ /^f/) { if ($Fdst) { &End_fd } foreach $i (0 .. ($#F - 1)) { FD: { if ($F[$i] =~ /^a(.*)/) { $Access = $1; last FD; } if ($F[$i] =~ /^f(.*)/) { $Fd = $1; last FD; } if ($F[$i] =~ /^F(.*)/) { $Fsa = $1; last FD; } if ($F[$i] =~ /^l(.*)/) { $Lock = $1; last FD; } if ($F[$i] =~ /^t(.*)/) { $Type = $1; last FD; } if ($F[$i] =~ /^d(.*)/) { $Devch = $1; last FD; } if ($F[$i] =~ /^D(.*)/) { $Devn = $1; last FD; } if ($F[$i] =~ /^s(.*)/) { $Size = $1; last FD; } if ($F[$i] =~ /^o(.*)/) { $Offset = $1; last FD; } if ($F[$i] =~ /^i(.*)/) { $Inode = $1; last FD; } if ($F[$i] =~ /^P(.*)/) { $Proto = $1; last FD; } if ($F[$i] =~ /^S(.*)/) { $Stream = $1; last FD; } if ($F[$i] =~ /^T(.*)/) { if ($State eq "") { $State = "(" . $1; } else { $State = $State . " " . $1; } last FD; } if ($F[$i] =~ /^n(.*)/) { $Name = $1; last FD; } if ($F[$i] =~ /^N(.*)/) { $Na = $1; last FD; } print "ERROR: unrecognized file set field: \"$F[$i]\"\n"; } } $Fdst = 1; next; } print "ERROR: unrecognized: \"$_\"\n"; } close(LSOF_PIPE); if ($Fdst) { &End_fd } if ($Pidst) { &End_proc } # List matching files or file descriptors. for ($pass = 0; $pass < 2; $pass++) { foreach $key (sort keys(%Fds)) { @Praw = split(' ', $Fds{$key}, 999); if ($#Praw < 1) { next; } if ($Shfd) { @P = sort Sort_by_FD_and_PID @Praw; } else { @P = sort Sort_by_PID_and_FD @Praw; } # Accumulate and print blocks of (key, PID, FD) triplets. for ($i = 0; $i < $#P; $i++) { if ($Shfile) { for ($n = 0; $n <= $#P; $n++) { ($pid, $fd) = split(",", $P[$n], 999); $PrtPid[$n] = $pid; $PrtFd[$n] = $fd; } $i = $n; } else { ($pid, $fd) = split(",", $P[$i], 999); $PrtFd[0] = $fd; $PrtPid[0] = $pid; for ($n = 1; $i < $#P; $i++, $n++) { ($nxtpid, $nxtfd) = split(",", $P[$i + 1], 999); if ($fd ne $nxtfd) { last; } $PrtFd[$n] = $nxtfd; $PrtPid[$n] = $nxtpid; } } if ($n > 1) { &Print_block($key, $n, $pass); } } } } exit(0); ## End_fd() -- process end of file descriptor sub End_fd { local ($key); if ($Fdst && $Pidst && $Pid ne "") { if ($Cmd ne "") { $Cmds{$Pid} = $Cmd; } if ($Ppid ne "") { $Ppids{$Pid} = $Ppid; } $key = $Shfd ? $Fsa : $Na; if ($key ne "") { if (!defined($Fds{$key})) { $Fds{$key} = "$Pid,$Fd"; } else { $Fds{$key} .= " $Pid,$Fd"; } if ($Name ne "" && !defined($Name{$key})) { $Name{$key} = $Name } if ($Inode ne "" && !defined($Inodes{$key})) { $Inodes{$key} = $Inode; } if ($Devn ne "" && !defined($Devns{$key})) { $Devns{$key} = $Devn; } } } # Clear variables. $Access = $Devch = $Devn = $Fd = $Fsa = $Inode = $Lock = ""; $Na = $Name = $Offset = $Proto = $Size = $State = $Stream = $Type = ""; $Fdst = 0; } ## End_proc() -- process end of process sub End_proc { # Clear variables. $Cmd = $Login = $Pgrp = $Pid = $Ppid = $Uid = ""; $Fdst = $Pidst = 0; } ## Print_block() -- print a block of entries # # entry: # # @_[0] = block's key # @_[1] = number of entries in the block # @_[2] = print pass status (1 == print) sub Print_block { my ($key, $n, $pass) = @_; local ($fd, $i, $pid, $t, $tW); if ($pass) { if (!$Hdr) { printf "%${KeyW}.${KeyW}s", $KeyTtl; printf " %${PidW}.${PidW}s", $PidTtl; printf " %${PpidW}.${PpidW}s", $PpidTtl; printf " %-${CmdW}.${CmdW}s", $CmdTtl; printf " %${FdW}.${FdW}s", $FdTtl; printf " %${DevW}.${DevW}s", $DevTtl; printf " %${InoW}.${InoW}s", $InoTtl; printf " NAME\n"; $Hdr = 1; } else { print "\n"; } } # Loop through block. During a non-print pass, caclulate maximum field widths. for ($i = 0; $i < $n; $i++) { $fd = $PrtFd[$i]; $pid = $PrtPid[$i]; # Process key. if (!$pass) { $tW = length(sprintf("%s", $key)); if ($tW > $KeyW) { $KeyW = $tW; } } else { printf "%s", $key; } # Process PID. if (!$pass) { $tW = length(sprintf(" %s", $pid)); if ($tW > $PidW) { $PidW = $tW; } } else { printf " %${PidW}.${PidW}s", $pid; } # Process parent PID. $t = defined($Ppids{$pid}) ? $Ppids{$pid} : ""; if (!$pass) { $tW = length(sprintf(" %s", $t)); if ($tW > $PpidW) { $PpidW = $tW; } } else { printf " %${PpidW}.${PpidW}s", $t; } # Process command name. $t = defined($Cmds{$pid}) ? $Cmds{$pid} : ""; if (!$pass) { $tW = length(sprintf(" %s", $t)); if ($tW > $CmdW) { $CmdW = $tW; } } else { printf " %-${CmdW}.${CmdW}s", $t; } # Process file descriptor. if (!$pass) { $tW = length(sprintf(" %s", $fd)); if ($tW > $FdW) { $FdW = $tW; } } else { printf " %${FdW}.${FdW}s", $fd; } # Process device number. $t = defined($Devns{$key}) ? $Devns{$key} : ""; if (!$pass) { $tW = length(sprintf(" %s", $t)); if ($tW > $DevW) { $DevW = $tW; } } else { printf " %${DevW}.${DevW}s", $t; } # Process node number. $t = defined($Inodes{$key}) ? $Inodes{$key} : $t; if (!$pass) { $tW = length(sprintf (" %s", $t)); if ($tW > $InoW) { $InoW = $tW; } } else { printf " %${InoW}.${InoW}s", $t; } # Print name and line terminater, if this is a print pass. if ($pass) { if (defined($Name{$key})) { print " $Name{$key}\n"; } else { print "\n"; } } } } ## Sort_by_FD_and_PID() -- sort (PID,FD) doublets by FD first, then PID sub Sort_by_FD_and_PID { local ($pida, $pidb, $fda, $fdj, $rv); ($pida, $fda) = split(",", $a); ($pidb, $fdb) = split(",", $b); if ($fda < $fdb) { return(-1); } if ($fda > $fdb) { return(1); } if ($pida < $pidb) { return(-1); } if ($pida > $pidb) { return(1); } return(0); } ## Sort_by_PID_and_FD() -- sort (PID,FD) doublets by PID first, then FD sub Sort_by_PID_and_FD { local ($pida, $pidb, $fda, $fdj, $rv); ($pida, $fda) = split(",", $a); ($pidb, $fdb) = split(",", $b); if ($pida < $pidb) { return(-1); } if ($pida > $pidb) { return(1); } if ($fda < $fdb) { return(-1); } return(0); if ($fda > $fdb) { return(1); } } ## isexec($path) -- is $path executable # # $path = absolute or relative path to file to test for executabiity. # Paths that begin with neither '/' nor '.' that arent't found as # simple references are also tested with the path prefixes of the # PATH environment variable. sub isexec { my ($path) = @_; my ($i, @P, $PATH); $path =~ s/^\s+|\s+$//g; if ($path eq "") { return(""); } if (($path =~ m#^[\/\.]#)) { if (-x $path) { return($path); } return(""); } $PATH = $ENV{PATH}; @P = split(":", $PATH); for ($i = 0; $i <= $#P; $i++) { if (-x "$P[$i]/$path") { return("$P[$i]/$path"); } } return(""); }