From owner-freebsd-questions@FreeBSD.ORG Wed Dec 5 23:15:31 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 918418D1 for ; Wed, 5 Dec 2012 23:15:31 +0000 (UTC) (envelope-from coco@executive-computing.de) Received: from mail.moehre.org (mail.moehre.org [195.96.35.7]) by mx1.freebsd.org (Postfix) with ESMTP id 0935E8FC12 for ; Wed, 5 Dec 2012 23:15:29 +0000 (UTC) Received: from mail.moehre.org (unknown [195.96.35.7]) by mail.moehre.org (Postfix) with ESMTP id 9101B8B14E6 for ; Thu, 6 Dec 2012 00:07:50 +0100 (CET) X-Spam-Flag: NO X-Spam-Score: -100.888 X-Spam-Level: X-Spam-Status: No, score=-100.888 tagged_above=-999 required=5 tests=[ALL_TRUSTED=-1, AWL=-0.042, TW_MK=0.077, TW_PR=0.077, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mail.moehre.org ([195.96.35.7]) by mail.moehre.org (mail.moehre.org [195.96.35.7]) (amavisd-new, port 10024) with ESMTP id MT8YxzPqDKIF for ; Thu, 6 Dec 2012 00:07:48 +0100 (CET) Received: from probsd.c0c0.intra (p54B0BCDD.dip.t-dialin.net [84.176.188.221]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: coco@executive-computing.de) by mail.moehre.org (Postfix) with ESMTPSA id 4A1908B14E7 for ; Thu, 6 Dec 2012 00:07:48 +0100 (CET) Date: Thu, 6 Dec 2012 00:07:32 +0100 (CET) From: Marco Steinbach X-X-Sender: coco@probsd.c0c0.intra To: freebsd-questions@freebsd.org Subject: grep -Dskip doesn't skip FIFOs Message-ID: User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 05 Dec 2012 23:15:31 -0000 Hi there, grep(1) does not seem to skip FIFOs when told to. coco@probsd:~ > uname -a FreeBSD probsd.c0c0.intra 8.3-STABLE FreeBSD 8.3-STABLE #0 r243477: Sat Nov 24 11:07:17 CET 2012 root@x2.c0c0.intra:/usr/obj/usr/src/sys/GATEKEEPER i386 coco@probsd:~ > mkfifo bleh coco@probsd:~ > ls -l bleh prw-r--r-- 1 coco coco 0 Dec 5 23:55 bleh coco@probsd:~ > grep -Dskip foobar bleh ^C coco@probsd:~ > truss grep -Dskip foobar bleh __sysctl(0xbfbfe074,0x2,0xbfbfe07c,0xbfbfe080,0x0,0x0) = 0 (0x0) mmap(0x0,336,PROT_READ|PROT_WRITE,MAP_ANON,-1,0x0) = 671711232 (0x28098000) munmap(0x28098000,336) = 0 (0x0) __sysctl(0xbfbfe0d8,0x2,0x2808ee7c,0xbfbfe0e0,0x0,0x0) = 0 (0x0) mmap(0x0,32768,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 671711232 (0x28098000) issetugid(0x280878ab,0xbfbfe59c,0x104,0x0,0x0,0x0) = 0 (0x0) open("/etc/libmap.conf",O_RDONLY,0666) ERR#2 'No such file or directory' open("/var/run/ld-elf.so.hints",O_RDONLY,00) = 3 (0x3) read(3,"Ehnt\^A\0\0\0\M^@\0\0\0\M-1\0\0"...,128) = 128 (0x80) lseek(3,0x80,SEEK_SET) = 128 (0x80) read(3,"/lib:/usr/lib:/usr/lib/compat:/u"...,177) = 177 (0xb1) close(3) = 0 (0x0) access("/lib/libgnuregex.so.5",0) ERR#2 'No such file or directory' access("/usr/lib/libgnuregex.so.5",0) = 0 (0x0) open("/usr/lib/libgnuregex.so.5",O_RDONLY,00) = 3 (0x3) fstat(3,{ mode=-r--r--r-- ,inode=5484738,size=64244,blksize=16384 }) = 0 (0x0) pread(0x3,0x2808ddc0,0x1000,0x0,0x0,0x0) = 4096 (0x1000) mmap(0x0,69632,PROT_NONE,MAP_PRIVATE|MAP_ANON|MAP_NOCORE,-1,0x0) = 671744000 (0x280a0000) mmap(0x280a0000,65536,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE,3,0x0) = 671744000 (0x280a0000) mmap(0x280b0000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED,3,0xf000) = 671809536 (0x280b0000) close(3) = 0 (0x0) access("/lib/libbz2.so.4",0) ERR#2 'No such file or directory' access("/usr/lib/libbz2.so.4",0) = 0 (0x0) open("/usr/lib/libbz2.so.4",O_RDONLY,027757760314) = 3 (0x3) fstat(3,{ mode=-r--r--r-- ,inode=5484473,size=66668,blksize=16384 }) = 0 (0x0) pread(0x3,0x2808ddc0,0x1000,0x0,0x0,0x0) = 4096 (0x1000) mmap(0x0,65536,PROT_NONE,MAP_PRIVATE|MAP_ANON|MAP_NOCORE,-1,0x0) = 671813632 (0x280b1000) mmap(0x280b1000,61440,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE,3,0x0) = 671813632 (0x280b1000) mmap(0x280c0000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED,3,0xf000) = 671875072 (0x280c0000) close(3) = 0 (0x0) access("/lib/libz.so.5",0) = 0 (0x0) open("/lib/libz.so.5",O_RDONLY,027757760314) = 3 (0x3) fstat(3,{ mode=-r--r--r-- ,inode=5470199,size=72328,blksize=16384 }) = 0 (0x0) pread(0x3,0x2808ddc0,0x1000,0x0,0x0,0x0) = 4096 (0x1000) mmap(0x0,73728,PROT_NONE,MAP_PRIVATE|MAP_ANON|MAP_NOCORE,-1,0x0) = 671879168 (0x280c1000) mmap(0x280c1000,69632,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE,3,0x0) = 671879168 (0x280c1000) mmap(0x280d2000,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED,3,0x11000) = 671948800 (0x280d2000) close(3) = 0 (0x0) access("/lib/libc.so.7",0) = 0 (0x0) open("/lib/libc.so.7",O_RDONLY,027757760314) = 3 (0x3) fstat(3,{ mode=-r--r--r-- ,inode=5470167,size=1158944,blksize=16384 }) = 0 (0x0) pread(0x3,0x2808ddc0,0x1000,0x0,0x0,0x0) = 4096 (0x1000) mmap(0x0,1167360,PROT_NONE,MAP_PRIVATE|MAP_ANON|MAP_NOCORE,-1,0x0) = 671952896 (0x280d3000) mmap(0x280d3000,1048576,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE,3,0x0) = 671952896 (0x280d3000) mmap(0x281d3000,28672,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED,3,0xff000) = 673001472 (0x281d3000) mmap(0x281da000,90112,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0) = 673030144 (0x281da000) close(3) = 0 (0x0) mmap(0x0,880,PROT_READ|PROT_WRITE,MAP_ANON,-1,0x0) = 673120256 (0x281f0000) munmap(0x281f0000,880) = 0 (0x0) mmap(0x0,600,PROT_READ|PROT_WRITE,MAP_ANON,-1,0x0) = 673120256 (0x281f0000) munmap(0x281f0000,600) = 0 (0x0) mmap(0x0,712,PROT_READ|PROT_WRITE,MAP_ANON,-1,0x0) = 673120256 (0x281f0000) munmap(0x281f0000,712) = 0 (0x0) mmap(0x0,1048,PROT_READ|PROT_WRITE,MAP_ANON,-1,0x0) = 673120256 (0x281f0000) munmap(0x281f0000,1048) = 0 (0x0) mmap(0x0,22000,PROT_READ|PROT_WRITE,MAP_ANON,-1,0x0) = 673120256 (0x281f0000) munmap(0x281f0000,22000) = 0 (0x0) sysarch(0xa,0xbfbfe140,0x2805d51b,0x2808d318,0x28070159,0x2808d318) = 0 (0x0) sigprocmask(SIG_BLOCK,SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2,0x0) = 0 (0x0) sigprocmask(SIG_SETMASK,0x0,0x0) = 0 (0x0) __sysctl(0xbfbfe0f4,0x2,0x805b780,0xbfbfe0fc,0x0,0x0) = 0 (0x0) sigprocmask(SIG_BLOCK,SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2,0x0) = 0 (0x0) sigprocmask(SIG_SETMASK,0x0,0x0) = 0 (0x0) sigprocmask(SIG_BLOCK,SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2,0x0) = 0 (0x0) sigprocmask(SIG_SETMASK,0x0,0x0) = 0 (0x0) sigprocmask(SIG_BLOCK,SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2,0x0) = 0 (0x0) sigprocmask(SIG_SETMASK,0x0,0x0) = 0 (0x0) sigprocmask(SIG_BLOCK,SIGHUP|SIGINT|SIGQUIT|SIGKILL|SIGPIPE|SIGALRM|SIGTERM|SIGURG|SIGSTOP|SIGTSTP|SIGCONT|SIGCHLD|SIGTTIN|SIGTTOU|SIGIO|SIGXCPU|SIGXFSZ|SIGVTALRM|SIGPROF|SIGWINCH|SIGINFO|SIGUSR1|SIGUSR2,0x0) = 0 (0x0) sigprocmask(SIG_SETMASK,0x0,0x0) = 0 (0x0) __sysctl(0xbfbfe074,0x2,0x281df8e0,0xbfbfe07c,0x0,0x0) = 0 (0x0) __sysctl(0xbfbfdf84,0x2,0xbfbfdf1c,0xbfbfdf8c,0x281ca314,0xc) = 0 (0x0) __sysctl(0xbfbfdf1c,0x2,0x281df9d8,0xbfbfdfd8,0x0,0x0) = 0 (0x0) readlink("/etc/malloc.conf",0xbfbfe083,1024) ERR#2 'No such file or directory' issetugid(0x281c901d,0xbfbfe083,0x400,0xbfbfe07c,0x0,0x0) = 0 (0x0) break(0x8100000) = 0 (0x0) __sysctl(0xbfbfe284,0x2,0xbfbfe28c,0xbfbfe290,0x0,0x0) = 0 (0x0) mmap(0x0,1048576,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 673120256 (0x281f0000) mmap(0x282f0000,65536,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 674168832 (0x282f0000) munmap(0x281f0000,65536) = 0 (0x0) [Hangs] ^Copen("bleh",O_RDONLY,0601403006) ERR#4 'Interrupted system call' SIGNAL 2 (SIGINT) process exit, rval = 0 coco@probsd:~ > Error on my part ? Hitting a bug ? MfG CoCo