From f65fd747b440ae2d8a7481ecc50e668c5e4d0cc9 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sun, 8 Dec 1996 08:01:13 +0000 Subject: update from main archive 961207 Sun Dec 8 06:56:49 1996 Ulrich Drepper * io/getwd.c: Use PATH_MAX not LOCAL_PATH_MAX. Fix typo in comment. * stdlib/canonicalize.c: Correct bugs in last change. Patch by HJ Lu. * libio/Makefile (routines): Remove ioprims. (aux): Remove cleanup. Add IO_DEBUG option for .o files. * libio/cleanups.c: Removed. * libio/ioprims.c: Removed. * libio/filedoalloc.c: More updates from libg++-2.8b5. * libio/fileops.c: Likewise. * libio/genops.c: Likewise. * libio/iolibio.h: Likewise. * libio/iopopen.c: Likewise. * libio/iovsprintf.c: Likewise. * libio/iovsscanf.c: Likewise. * libio/libio.h: Likewise. * libio/libioP.h: Likewise. * libio/memstream.c: Likewise. * libio/strfile.h: Likewise. * libio/vasprintf.c: Likewise. * libio/vsnprintf.c: Likewise. * libio/stdio.h: Define P_tmpdir only is __USE_SVID. * manual/arith.texi: Change references to ANSI C to ISO C. * manual/conf.texi: Likewise. * manual/creature.texi: Likewise. * manual/ctype.texi: Likewise. * manual/errno.texi: Likewise. * manual/filesys.texi: Likewise. * manual/intro.texi. Likewise. * manual/io.texi: Likewise. * manual/lang.texi: Likewise. * manual/libc.texinfo: Likewise. * manual/locale.texi: Likewise. * manual/maint.texi: Likewise. * manual/mbyte.texi: Likewise. * manual/memory.texi: Likewise. * manual/process.texi: Likewise. * manual/process.texi: Likewise. * manual/search.texi: Likewise. * manual/setjmp.texi: Likewise. * manual/signal.texi: Likewise. * manual/startup.texi: Likewise. * manual/stdio.texi: Likewise. * manual/string.texi: Likewise. * manual/time.texi: Likewise. * manual/locale.texi: Remove description of LC_RESPONSE and add LC_MESSAGES. * Makefile (subdirs): Change malloc in $(malloc). * config.make.in: Add variable malloc which is initialized from @malloc@. * configure.in: Add new option --enable-new-malloc to use new malloc. This is the default on Linux. * sysdeps/unix/sysv/linux/configure.in: Define malloc to new-malloc by default. * new-malloc/Makefile: New file. Improved malloc implementation. * new-malloc/malloc.c: Likewise. * new-malloc/malloc.h: Likewise. * new-malloc/mallocbug.c: Likewise. * new-malloc/obstack.c: Likewise. * new-malloc/obstack.h: Likewise. * new-malloc/thread-m.h: Likewise. * time/Makefile: Compile ap.c with NO_MCHECK flag for now. * time/ap.c: Don't call mcheck if NO_MCHECK is defined. * resolv/Makefile: Add rule to rebuiild libresolv.so when libc.so changed. * stdio/feof.c: Update copyright. * stdio/stdio.h: Add field for lock to FILE structure. Add cast to *MAGIC constants to prevent warnings. * stdio-common/bug7.c: Correct test. Stream must not be closed twice. * stdlib/Makefile (routines): Add secure-getenv. * stdlib/secure-getenv.c: New file. __secure_getenv function moved to here from sysdeps/generic/getenv.c. Otherwise an application cannot replace the getenv function in the libc. * sysdeps/generic/getenv.c: Remove __secure_getenv function. * sysdeps/stub/getenv.c: Remove __secure_getenv alias. * sysdeps/mach/libc-lock.h: Define__libc_mutex_lock to __mutex_lock. * sysdeps/posix/fdopen.c: Update copyright. Don't use EXFUN. * time/test-tz.c: Comment fifth test out. PROBLEM. * time/tzset.c: De-ANSI-declfy. (__tzset): Don't increment pointer tz when no DST information is given. Sat Dec 7 23:47:54 1996 Ulrich Drepper * sysdeps/mach/libc-lock.h [_LIBC]: Add definition of __libc_mutex_lock. Patch by Thomas Bushnell. * sysdeps/unix/sysv/linux/timebits.h: Load only if __USE_MISC. * sysdeps/unix/sysv/linux/Dist: Add llseek.c. Sat Dec 7 12:18:56 1996 Ulrich Drepper * time/strftime (%c format): Remove %Z from default string. Reported by Paul Eggert * io/getwd.c: Don't apply getcwd on user supplied buffer. --- stdlib/Makefile | 8 ++++---- stdlib/canonicalize.c | 20 ++++++++------------ stdlib/secure-getenv.c | 30 ++++++++++++++++++++++++++++++ 3 files changed, 42 insertions(+), 16 deletions(-) create mode 100644 stdlib/secure-getenv.c (limited to 'stdlib') diff --git a/stdlib/Makefile b/stdlib/Makefile index 9d5744fc78..eadcd40cee 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -12,9 +12,9 @@ # Library General Public License for more details. # You should have received a copy of the GNU Library General Public -# License along with the GNU C Library; see the file COPYING.LIB. If -# not, write to the Free Software Foundation, Inc., 675 Mass Ave, -# Cambridge, MA 02139, USA. +# License along with the GNU C Library; see the file COPYING.LIB. If not, +# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +# Boston, MA 02111-1307, USA. # # Makefile for stdlib routines @@ -27,7 +27,7 @@ routines := \ atof atoi atol \ abort \ bsearch qsort msort \ - getenv putenv setenv \ + getenv putenv setenv secure-getenv \ exit on_exit atexit \ abs labs llabs \ div ldiv lldiv \ diff --git a/stdlib/canonicalize.c b/stdlib/canonicalize.c index 8c0074a11c..0985e250b8 100644 --- a/stdlib/canonicalize.c +++ b/stdlib/canonicalize.c @@ -53,21 +53,14 @@ canonicalize (const char *name, char *resolved) path_max = 1024; #endif - rpath = resolved; + rpath = resolved ? __alloca (path_max) : malloc (path_max); rpath_limit = rpath + path_max; - if (!resolved) - rpath = malloc (path_max); if (name[0] != '/') { - /* We don't write to RPATH directly since the application and - the library might disagree about the value for PATH_MAX. */ - char tmpbuf[path_max]; - if (!getcwd (rpath, path_max)) goto error; - - dest = __stpcpy (rpath, tmpbuf); + dest = strchr (rpath, '\0'); } else { @@ -128,7 +121,7 @@ canonicalize (const char *name, char *resolved) if (S_ISLNK (st.st_mode)) { - char * buf = __alloca(path_max); + char *buf = __alloca (path_max); if (++num_links > MAXSYMLINKS) { @@ -169,10 +162,13 @@ canonicalize (const char *name, char *resolved) if (dest > rpath + 1 && dest[-1] == '/') --dest; *dest = '\0'; - return rpath; + + return resolved ? strcpy (resolved, rpath) : rpath; error: - if (!resolved) + if (resolved) + strcpy (resolved, rpath); + else free (rpath); return NULL; } diff --git a/stdlib/secure-getenv.c b/stdlib/secure-getenv.c new file mode 100644 index 0000000000..f4dc43cc85 --- /dev/null +++ b/stdlib/secure-getenv.c @@ -0,0 +1,30 @@ +/* Copyright (C) 1991, 1992, 1994, 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 + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include + +/* Some programs and especially the libc itself have to be careful + what values to accept from the environment. This special version + checks for SUID or SGID first before doing any work. */ +char * +__secure_getenv (name) + const char *name; +{ + return __libc_enable_secure ? NULL : getenv (name); +} -- cgit 1.4.1