From: Lionel Sambuc Date: Wed, 30 Jan 2013 17:57:00 +0000 (+0100) Subject: Upgrading pwd X-Git-Tag: v3.2.1~39 X-Git-Url: http://zhaoyanbai.com/repos/Bv9ARM.ch03.html?a=commitdiff_plain;h=06f3970b9e9822135ff0cedc3a4fd606bff479cc;p=minix.git Upgrading pwd Change-Id: I3bab8335ac58f2d0af20c5cee4b772b1175c2ede --- diff --git a/bin/Makefile b/bin/Makefile index 471e2039c..e62fd47fe 100644 --- a/bin/Makefile +++ b/bin/Makefile @@ -2,6 +2,6 @@ # @(#)Makefile 8.1 (Berkeley) 5/31/93 SUBDIR= cat date echo ed expr \ - mkdir pax rm rmdir test + mkdir pax pwd rm rmdir test .include diff --git a/bin/pwd/Makefile b/bin/pwd/Makefile new file mode 100644 index 000000000..9b1b2b2c5 --- /dev/null +++ b/bin/pwd/Makefile @@ -0,0 +1,6 @@ +# $NetBSD: Makefile,v 1.8 1997/07/20 22:37:41 christos Exp $ +# @(#)Makefile 8.1 (Berkeley) 5/31/93 + +PROG= pwd + +.include diff --git a/bin/pwd/pwd.1 b/bin/pwd/pwd.1 new file mode 100644 index 000000000..45230f029 --- /dev/null +++ b/bin/pwd/pwd.1 @@ -0,0 +1,107 @@ +.\" $NetBSD: pwd.1,v 1.24 2003/10/30 14:58:23 wiz Exp $ +.\" +.\" Copyright (c) 1990, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the Institute of Electrical and Electronics Engineers, Inc. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)pwd.1 8.2 (Berkeley) 4/28/95 +.\" +.Dd October 30, 2003 +.Dt PWD 1 +.Os +.Sh NAME +.Nm pwd +.Nd return working directory name +.Sh SYNOPSIS +.Nm +.Op Fl LP +.Sh DESCRIPTION +.Nm +writes the absolute pathname of the current working directory to +the standard output. +.Pp +The following options are available: +.Bl -tag -width indent +.It Fl L +If the +.Ev PWD +environment variable is an absolute pathname that contains +neither "/./" nor "/../" and references the current directory, then +.Ev PWD +is assumed to be the name of the current directory. +.It Fl P +Print the physical path to the current working directory, with symbolic +links in the path resolved. +.El +.Pp +The default for the +.Nm +command is +.Fl P . +.Pp +.Nm +is usually provided as a shell builtin (which may have a different +default). +.Sh EXIT STATUS +The +.Nm +utility exits 0 on success, and \*[Gt]0 if an error occurs. +.Sh SEE ALSO +.Xr cd 1 , +.Xr csh 1 , +.Xr ksh 1 , +.Xr sh 1 , +.Xr getcwd 3 +.Sh STANDARDS +The +.Nm +utility is expected to be conforming to +.St -p1003.1 , +except that the default is +.Fl P +not +.Fl L . +.Sh BUGS +In +.Xr csh 1 +the command +.Ic dirs +is always faster (although it can give a different answer in the rare case +that the current directory or a containing directory was moved after +the shell descended into it). +.Pp +.Nm +.Fl L +relies on the file system having unique inode numbers. +If this is not true (e.g., on FAT file systems) then +.Nm +.Fl L +may fail to detect that +.Ev PWD +is incorrect. diff --git a/bin/pwd/pwd.c b/bin/pwd/pwd.c new file mode 100644 index 000000000..27888ebf7 --- /dev/null +++ b/bin/pwd/pwd.c @@ -0,0 +1,143 @@ +/* $NetBSD: pwd.c,v 1.22 2011/08/29 14:51:19 joerg Exp $ */ + +/* + * Copyright (c) 1991, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#ifndef lint +__COPYRIGHT("@(#) Copyright (c) 1991, 1993, 1994\ + The Regents of the University of California. All rights reserved."); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)pwd.c 8.3 (Berkeley) 4/1/94"; +#else +__RCSID("$NetBSD: pwd.c,v 1.22 2011/08/29 14:51:19 joerg Exp $"); +#endif +#endif /* not lint */ + +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +static char *getcwd_logical(void); +__dead static void usage(void); + +/* + * Note that EEE Std 1003.1, 2003 requires that the default be -L. + * This is inconsistent with the historic behaviour of everything + * except the ksh builtin. + * To avoid breaking scripts the default has been kept as -P. + * (Some scripts run /bin/pwd in order to get 'pwd -P'.) + */ + +int +main(int argc, char *argv[]) +{ + int ch, lFlag; + const char *p; + + setprogname(argv[0]); + (void)setlocale(LC_ALL, ""); + + lFlag = 0; + while ((ch = getopt(argc, argv, "LP")) != -1) { + switch (ch) { + case 'L': + lFlag = 1; + break; + case 'P': + lFlag = 0; + break; + case '?': + default: + usage(); + } + } + argc -= optind; + argv += optind; + + if (argc != 0) + usage(); + + if (lFlag) + p = getcwd_logical(); + else + p = NULL; + if (p == NULL) + p = getcwd(NULL, 0); + + if (p == NULL) + err(EXIT_FAILURE, NULL); + + (void)printf("%s\n", p); + + exit(EXIT_SUCCESS); + /* NOTREACHED */ +} + +static char * +getcwd_logical(void) +{ + char *pwd; + struct stat s_pwd, s_dot; + + /* Check $PWD -- if it's right, it's fast. */ + pwd = getenv("PWD"); + if (pwd == NULL) + return NULL; + if (pwd[0] != '/') + return NULL; + if (strstr(pwd, "/./") != NULL) + return NULL; + if (strstr(pwd, "/../") != NULL) + return NULL; + if (stat(pwd, &s_pwd) == -1 || stat(".", &s_dot) == -1) + return NULL; + if (s_pwd.st_dev != s_dot.st_dev || s_pwd.st_ino != s_dot.st_ino) + return NULL; + return pwd; +} + +static void +usage(void) +{ + (void)fprintf(stderr, "usage: %s [-LP]\n", getprogname()); + exit(EXIT_FAILURE); + /* NOTREACHED */ +} diff --git a/commands/Makefile b/commands/Makefile index d6e9dd83f..53bd42dad 100644 --- a/commands/Makefile +++ b/commands/Makefile @@ -19,7 +19,7 @@ SUBDIR= add_route arp ash at backup banner basename btrace cal \ mount mt netconf nice acknm nohup \ nonamed od paste patch \ ping postinstall poweroff pr prep printroot \ - profile progressbar pr_routes ps pwd pwdauth \ + profile progressbar pr_routes ps pwdauth \ ramdisk rarpd rawspeed rcp rdate readclock \ reboot remsync rev rget rlogin \ rotate rsh rshd service setup shar acksize \ diff --git a/commands/pwd/Makefile b/commands/pwd/Makefile deleted file mode 100644 index bcf0484e2..000000000 --- a/commands/pwd/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -PROG= pwd -BINDIR= /bin -MAN= - -.include diff --git a/commands/pwd/pwd.c b/commands/pwd/pwd.c deleted file mode 100644 index 21609f99e..000000000 --- a/commands/pwd/pwd.c +++ /dev/null @@ -1,49 +0,0 @@ -/* pwd - print working directory Author: Norbert Schlenker */ - -/* - * pwd - print working directory - * Syntax: pwd - * Flags: None. - * Author: Norbert Schlenker - * Copyright: None. Released to the public domain. - * Reference: IEEE P1003.2 Section 4.50 (draft 10) - * Bugs: No internationalization support; all messages are in English. - */ - -/* Force visible Posix names */ -#ifndef _POSIX_SOURCE -#define _POSIX_SOURCE 1 -#endif - -/* External interfaces */ -#include -#include -#include -#include -#include -#include - -/* Magic numbers suggested or required by Posix specification */ -#define SUCCESS 0 /* exit code in case of success */ -#define FAILURE 1 /* or failure */ - -int main(void); - -static char dir[PATH_MAX + 1]; -static char *errmsg = "pwd: cannot search some directory on the path\n"; - -int main() -{ - char *p; - size_t n; - - p = getcwd(dir, PATH_MAX); - if (p == NULL) { - write(STDERR_FILENO, errmsg, strlen(errmsg)); - exit(FAILURE); - } - n = strlen(p); - p[n] = '\n'; - if (write(STDOUT_FILENO, p, n + 1) != n + 1) exit(FAILURE); - return(SUCCESS); -} diff --git a/man/man1/Makefile b/man/man1/Makefile index cbb2b6750..01cc5b227 100644 --- a/man/man1/Makefile +++ b/man/man1/Makefile @@ -13,7 +13,7 @@ MAN= ash.1 at.1 banner.1 basename.1 \ mesg.1 mixer.1 mkfs.mfs.1 \ mkproto.1 mount.1 mt.1 nice.1 nm.1 nohup.1 od.1 \ paste.1 ping.1 playwave.1 pr.1 prep.1 \ - profile.1 ps.1 pwd.1 rcp.1 recwave.1 \ + profile.1 ps.1 rcp.1 recwave.1 \ remsync.1 rget.1 rlogin.1 rsh.1 rz.1 \ shar.1 acksize.1 sleep.1 spell.1 \ split.1 stty.1 svc.1 svrctl.1 \ diff --git a/man/man1/pwd.1 b/man/man1/pwd.1 deleted file mode 100644 index 92a6acfcc..000000000 --- a/man/man1/pwd.1 +++ /dev/null @@ -1,25 +0,0 @@ -.TH PWD 1 -.SH NAME -pwd \- print working directory -.SH SYNOPSIS -\fBpwd\fR -.br -.de FL -.TP -\\fB\\$1\\fR -\\$2 -.. -.de EX -.TP 20 -\\fB\\$1\\fR -# \\$2 -.. -.SH EXAMPLES -.TP 20 -.B pwd -# Print the name of the working directory -.SH DESCRIPTION -.PP -The full path name of the current working directory is printed. -.SH "SEE ALSO" -.BR getcwd (3). diff --git a/releasetools/nbsd_ports b/releasetools/nbsd_ports index fd6a3c17d..b22e92981 100644 --- a/releasetools/nbsd_ports +++ b/releasetools/nbsd_ports @@ -15,6 +15,7 @@ 2012/10/17 12:00:00,bin/Makefile.inc 2008/07/20 00:52:40,bin/mkdir 2012/10/17 12:00:00,bin/pax +2012/10/17 12:00:00,bin/pwd 2011/08/29 14:48:46,bin/rm 2011/08/29 14:49:38,bin/rmdir 2012/10/17 12:00:00,bin/test