From a18f587da5a0a91bcd1307ed0f122ca2ce994c15 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sat, 7 Dec 1996 03:30:25 +0000 Subject: update from main archive 961206 Sat Dec 7 03:24:36 1996 Ulrich Drepper * configure.in: Discard error message from test in test for bash-2.0. * io/getpw.c: Don't apply getcwd on user supplied buffer. Instead always use temporary buffer and only copy the result. Patch by HJ Lu. * stdlib/canonicalize.c: Likewise. * libio/fileops.c: Change comments according to libg++2.8b5. * libio/iosetvbuf.c: Follow change in libg++-2.8b5 to clear unbuffered flag. Reported by HJ Lu. * manual/nss.texi: Correct prototypes. * misc/syslog.c: Make reentrant. Catch SIGPIPE signal to prevent crash if syslog daemon is restarted. * stdlib/rand_r.c: New file. Implementation of POSIX.2 function rand_r. * stdlib/Makefile (routines): Add rand_r. * sysdeps/stub/libc-lock.h: Define __libc_lock_trylock and __libc_mutex_lock. * configure.in: Add --disable-sanity-check option. * sysdeps/unix/sysv/linux/configure.in: If linuxthreads or des-crypt are not available and --disbale-sanity-check is not given abort with a message. Thu Dec 5 19:19:53 1996 Richard Henderson * posix/glob.c: Tests against STDC_HEADERS should also test __GNU_LIBRARY__. Thu Dec 5 16:20:55 1996 Ulrich Drepper * misc/err.c (vwarn): Set errno again before using %m format. Thu Dec 5 10:14:05 1996 Andreas Jaeger * grp/grp.h: Add declaration of __getgrent_r. * io/fts.c (fts_build): Remove "register" from variables dirbuf and dp since their address is needed. * sysdeps/posix/getcwd.c (__getcwd): Remove "register" from variable d since d's address is needed. * misc/tst-dirname.c (main): Provide prototype. * misc/ioctltst.c (main): Dito. * Makefile: Add gnu/lib-names.h to install-others before including Makerules. Wed Dec 4 16:00:09 1996 Ulrich Drepper * sysdeps/unix/sysv/linux/sys/socketvar.h: New file. Simply use . * sysdeps/unix/sysv/linux/Dist: Add sys/socketvar.h. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=inet)]: Add sys/socketvar.h to sysdep_headers. since the value might be outside the range of the `long int'. --- io/getwd.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) (limited to 'io/getwd.c') diff --git a/io/getwd.c b/io/getwd.c index 4488cef00e..510a681d78 100644 --- a/io/getwd.c +++ b/io/getwd.c @@ -1,4 +1,5 @@ -/* Copyright (C) 1991, 1992, 1996 Free Software Foundation, Inc. +/* Obsolete function to get current working directory. + Copyright (C) 1991, 1992, 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -21,19 +22,15 @@ #include #include -/* Put the absolute pathname of the current working direction in BUF. - If successful, return BUF. If not, put an error message in - BUF and return NULL. BUF should be at least PATH_MAX bytes long. */ + char * getwd (buf) char *buf; { #ifndef PATH_MAX #define PATH_MAX 1024 - char fetchbuf[PATH_MAX]; -#else -#define fetchbuf buf #endif + char tmpbuf[PATH_MAX]; if (buf == NULL) { @@ -41,18 +38,21 @@ getwd (buf) return NULL; } - if (getcwd (fetchbuf, PATH_MAX) == NULL) + if (getcwd (tmpbuf, LOCAL_PATH_MAX) == NULL) { -#if defined HAVE_STRERROR_R || defined _LIBC - __strerror_r (errno, buf, PATH_MAX); -#else - strncpy (buf, strerror (errno), PATH_MAX); -#endif + /* We use 1024 here since it should really be enough and because + this is a save value. */ + __strerror_r (errno, buf, 1024); return NULL; } - if (fetchbuf != buf) - strcpy (buf, fetchbuf); + /* This is completely unsafe. Nobody can say how big the user + provided buffer is. Perhaps the application and the libc + disagree about the value of PATH_MAX. */ + strcpy (buf, tmpbuf); return buf; } + +link_warning (getwd, + "the `getwd' function is dangerous and should not be used.") -- cgit 1.4.1