diff options
| author |   Ulrich Drepper <drepper@redhat.com> | 1997-09-21 01:47:02 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1997-09-21 01:47:02 +0000 |
| commit | 2604afb1b2d9acc3c70b1214285f996200bf0358 (patch) | |
| tree | ba59d75147565b8ab19686d98cee368d8ec697fc | |
| parent | Update. (diff) | |
| download | glibc-2604afb1b2d9acc3c70b1214285f996200bf0358.tar.gz glibc-2604afb1b2d9acc3c70b1214285f996200bf0358.tar.bz2 glibc-2604afb1b2d9acc3c70b1214285f996200bf0358.zip | |
Update.cvs/libc-ud-970920
1997-09-21 03:19 Ulrich Drepper <drepper@cygnus.com>
* libio/libio.h: More libstdc++ cleanups. Define _IO_USE_DTOA if
_G_HAVE_PRINTF_FP is not defined.
* libio/strops.c: Undo patch of 1997-07-08 02:18. Must find a
different solution for the problem.
* misc/search.h [__USE_GNU]: Define comparison_fn_t.
* stdlib/stdlib.h: Define comparison_fn_t only if __COMPAR_FN_T is
not defined.
Fix typo. Pretty print inline functions.
* sysdeps/i386/i486/string.h (__stpcpy_small): Increment __cp not cp.
Patch by HJ Lu <hjl@gnu.ai.mit.edu>.
1997-09-20 16:45 Ulrich Drepper <drepper@cygnus.com>
* hesiod/hesiod.c (hesiod_init): Use __secure_getenv to get
HES_DOMAIN environment variable.
Suggested by Mark Kettenis <kettenis@phys.uva.nl>.
* hesiod/README.hesiod: A bit of information about Hesiod and how
to use it. Written by Mark Kettenis <kettenis@phys.uva.nl>.
1997-09-20 05:15 Ulrich Drepper <drepper@cygnus.com>
* manual/maint.texi: Update requirement list.
* io/ftw.h: Don't use parameter names from global namespace in
prototypes.
* stdlib/strtol.c: If used outside glibc handle broken systems
which have character classification functions which are not 8-bit
clean gracefully. Patch by Bruno Haible <haible@ilog.fr>.
1997-09-19 21:42 David S. Miller <davem@tanya.rutgers.edu>
* sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h: ssize_t is
a long long int.
1997-09-19 15:12 H.J. Lu <hjl@gnu.ai.mit.edu>
* posix/Makefile (test-srcs): New, set to globtest.
1997-09-20 00:24 Ulrich Drepper <drepper@cygnus.com>
* manual/filesys.texi: Document ftw, nftw and needed data types.
1997-09-19 12:53 H.J. Lu <hjl@gnu.ai.mit.edu>
* sysdeps/i386/i486/bits/string.h: Fix typo.
1997-09-19 14:11 Ulrich Drepper <drepper@cygnus.com>
* io/ftwtest.c (cb): Print level.
* io/ftwtest-sh: Updated for ftwtest.c change.
* string/argz.h (__argz_next): Cast NULL to char * to satisfy C++
compilers.
Reported by Mirko Streckenbach <mirko@ramz.ing.tu-bs.de>.
* catgets/catgets.c (catopen): Correctly allocate string of nlspath.
Reported by Charles C. Fu <ccwf@klab.caltech.edu>.
1997-09-18 13:30 Klaus Espenlaub <kespenla@student.informatik.uni-ulm.de>
* sysdeps/i386/init-first.c: Call __getopt_clean_environment with
additional argument.
* sysdeps/mach/hurd/i386/init-first.c: Likewise.
* sysdeps/mach/hurd/mips/init-first.c: Likewise.
* sysdeps/stub/init-first.c: Likewise.
1997-09-18 03:16 Ulrich Drepper <drepper@cygnus.com>
* manual/search.texi: Document lsearch, lfind, the hsearch and
tsearch functions.
1997-09-18 00:04 Ulrich Drepper <drepper@cygnus.com>
* misc/hsearch_r.c (hsearch_r): Only return error for ENTER action
if the table is full and we *really* have to enter a new entry.
1997-09-17 19:44 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela): Get rid
of hack for handling flush opcode.
Patch by Richard Henderson <rth@cygnus.com>.
| -rw-r--r-- | ChangeLog | 88 | ||||
| -rw-r--r-- | INSTALL | 315 | ||||
| -rw-r--r-- | PROJECTS | 4 | ||||
| -rw-r--r-- | catgets/catgets.c | 3 | ||||
| -rw-r--r-- | hesiod/README.hesiod | 150 | ||||
| -rw-r--r-- | hesiod/hesiod.c | 2 | ||||
| -rw-r--r-- | io/ftw.h | 17 | ||||
| -rw-r--r-- | io/ftwtest-sh | 97 | ||||
| -rw-r--r-- | io/ftwtest.c | 2 | ||||
| -rw-r--r-- | libio/libio.h | 3 | ||||
| -rw-r--r-- | libio/strops.c | 4 | ||||
| -rw-r--r-- | manual/filesys.texi | 206 | ||||
| -rw-r--r-- | manual/maint.texi | 60 | ||||
| -rw-r--r-- | manual/search.texi | 366 | ||||
| -rw-r--r-- | misc/hsearch_r.c | 22 | ||||
| -rw-r--r-- | misc/search.h | 4 | ||||
| -rw-r--r-- | posix/Makefile | 1 | ||||
| -rw-r--r-- | stdlib/stdlib.h | 159 | ||||
| -rw-r--r-- | stdlib/strtol.c | 11 | ||||
| -rw-r--r-- | string/argz.h | 6 | ||||
| -rw-r--r-- | sysdeps/i386/i486/bits/string.h | 8 | ||||
| -rw-r--r-- | sysdeps/i386/init-first.c | 8 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/i386/init-first.c | 20 | ||||
| -rw-r--r-- | sysdeps/mach/hurd/mips/init-first.c | 10 | ||||
| -rw-r--r-- | sysdeps/sparc/sparc32/dl-machine.h | 4 | ||||
| -rw-r--r-- | sysdeps/stub/init-first.c | 4 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h | 2 |
27 files changed, 1170 insertions, 406 deletions
@@ -1,3 +1,91 @@ +1997-09-21 03:19 Ulrich Drepper <drepper@cygnus.com> + + * libio/libio.h: More libstdc++ cleanups. Define _IO_USE_DTOA if + _G_HAVE_PRINTF_FP is not defined. + * libio/strops.c: Undo patch of 1997-07-08 02:18. Must find a + different solution for the problem. + + * misc/search.h [__USE_GNU]: Define comparison_fn_t. + * stdlib/stdlib.h: Define comparison_fn_t only if __COMPAR_FN_T is + not defined. + Fix typo. Pretty print inline functions. + + * sysdeps/i386/i486/string.h (__stpcpy_small): Increment __cp not cp. + Patch by HJ Lu <hjl@gnu.ai.mit.edu>. + +1997-09-20 16:45 Ulrich Drepper <drepper@cygnus.com> + + * hesiod/hesiod.c (hesiod_init): Use __secure_getenv to get + HES_DOMAIN environment variable. + Suggested by Mark Kettenis <kettenis@phys.uva.nl>. + + * hesiod/README.hesiod: A bit of information about Hesiod and how + to use it. Written by Mark Kettenis <kettenis@phys.uva.nl>. + +1997-09-20 05:15 Ulrich Drepper <drepper@cygnus.com> + + * manual/maint.texi: Update requirement list. + + * io/ftw.h: Don't use parameter names from global namespace in + prototypes. + + * stdlib/strtol.c: If used outside glibc handle broken systems + which have character classification functions which are not 8-bit + clean gracefully. Patch by Bruno Haible <haible@ilog.fr>. + +1997-09-19 21:42 David S. Miller <davem@tanya.rutgers.edu> + + * sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h: ssize_t is + a long long int. + +1997-09-19 15:12 H.J. Lu <hjl@gnu.ai.mit.edu> + + * posix/Makefile (test-srcs): New, set to globtest. + +1997-09-20 00:24 Ulrich Drepper <drepper@cygnus.com> + + * manual/filesys.texi: Document ftw, nftw and needed data types. + +1997-09-19 12:53 H.J. Lu <hjl@gnu.ai.mit.edu> + + * sysdeps/i386/i486/bits/string.h: Fix typo. + +1997-09-19 14:11 Ulrich Drepper <drepper@cygnus.com> + + * io/ftwtest.c (cb): Print level. + * io/ftwtest-sh: Updated for ftwtest.c change. + + * string/argz.h (__argz_next): Cast NULL to char * to satisfy C++ + compilers. + Reported by Mirko Streckenbach <mirko@ramz.ing.tu-bs.de>. + + * catgets/catgets.c (catopen): Correctly allocate string of nlspath. + Reported by Charles C. Fu <ccwf@klab.caltech.edu>. + +1997-09-18 13:30 Klaus Espenlaub <kespenla@student.informatik.uni-ulm.de> + + * sysdeps/i386/init-first.c: Call __getopt_clean_environment with + additional argument. + * sysdeps/mach/hurd/i386/init-first.c: Likewise. + * sysdeps/mach/hurd/mips/init-first.c: Likewise. + * sysdeps/stub/init-first.c: Likewise. + +1997-09-18 03:16 Ulrich Drepper <drepper@cygnus.com> + + * manual/search.texi: Document lsearch, lfind, the hsearch and + tsearch functions. + +1997-09-18 00:04 Ulrich Drepper <drepper@cygnus.com> + + * misc/hsearch_r.c (hsearch_r): Only return error for ENTER action + if the table is full and we *really* have to enter a new entry. + +1997-09-17 19:44 Ulrich Drepper <drepper@cygnus.com> + + * sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela): Get rid + of hack for handling flush opcode. + Patch by Richard Henderson <rth@cygnus.com>. + 1997-09-16 23:48 Ulrich Drepper <drepper@cygnus.com> * libio/fileops.c: Define __set_errno if necessary. @@ -47,11 +47,13 @@ you run `configure': `--prefix=DIRECTORY' Install machine-independent data files in subdirectories of `DIRECTORY'. (You can also set this in `configparms'; see below.) + The default is to install in `/usr/local'. `--exec-prefix=DIRECTORY' Install the library and other machine-dependent files in subdirectories of `DIRECTORY'. (You can also set this in - `configparms'; see below.) + `configparms'; see below.) The default is to use <prefix>/bin and + <prefix>/sbin. `--enable-shared' `--disable-shared' @@ -76,23 +78,6 @@ you run `configure': static library is compiled with no optimization and full debugging information, and installed as `-lc_g'. -`--enable-bounded' -`--disable-bounded' - Enable or disable building of the C library with support for bounded - pointers. To do this one need the enhanced version of the GNU CC - with can generate code for bounded pointers. This version of the - C library is necessary to run code which is also compiled using the - enhanced gcc for debugging purposes. - -There are two more options: - -`--with-gmp' -`--with-gettext' - These options are not of much use for the normal installer of the - GNU libc. Only maintainers need this to get automatic updates of - the files from these packages in the GNU C library source tree. - - The simplest way to run `configure' is to do it in the directory that contains the library sources. This prepares to build the library in that very directory. @@ -127,7 +112,7 @@ and define in that file the parameters you want to specify. `configparms' should *not* be an edited copy of `Makeconfig'; specify only the parameters that you want to override. To see how to set these parameters, find the section of `Makeconfig' that says "These are the -configuration variables." Then for each parameter that you want to +configuration variables." Then for each parameter that you want to change, copy the definition from `Makeconfig' to your new `configparms' file, and change the value as appropriate for your system. @@ -155,11 +140,15 @@ library facilities, type `make check'. This will produce several files with names like `PROGRAM.out'. To format the `GNU C Library Reference Manual' for printing, type -`make dvi'. +`make dvi'. You need a working TeX installation to do this. To install the library and its header files, and the Info files of the manual, type `make install'. This will build things if necessary, -before installing them. +before installing them. If you want to install the files in a different +place than the one specified at configuration time you can specify a +value for the Makefile variable `install_root' on the command line. +This is useful to create chroot'ed environment or to prepare binary +releases. Recommended Tools to Install the GNU C Library ---------------------------------------------- @@ -167,27 +156,57 @@ Recommended Tools to Install the GNU C Library We recommend installing the following GNU tools before attempting to build the GNU C library: - * `make' 3.75 + * `make' 3.76.1 You need the latest version of GNU `make'. Modifying the GNU C Library to work with other `make' programs would be so hard that we - recommend you port GNU `make' instead. *Really.* We recommend - version GNU `make' version 3.75 or later. + recommend you port GNU `make' instead. *Really.* We recommend + version GNU `make' version 3.75, 3.76.1 or later. Version 3.76 is + known to have a bug which only shows up in big projects like GNU + `libc'. - * GCC 2.7.2.1 + * GCC 2.7.2.3 On most platforms, the GNU C library can only be compiled with the GNU C compiler. We recommend GCC version 2.7.2 or later; earlier versions may have problems. - * `binutils' 2.7 + On PowerPC, GCC versions dated earlier than 970904 are known not + to work (they crash), including 2.7.2. + + * `binutils' 2.8.1 Using the GNU `binutils' (assembler, linker, and related tools) is preferable when possible, and they are required to build an ELF - shared C library. We recommend `binutils' version 2.7 or later; + shared C library. We recommend `binutils' version 2.8.1 or later; earlier versions are known to have problems or to not support all architectures. + * `texinfo' 3.11 + + To correctly translate and install the Texinfo documentation you + need this version of the `texinfo' package. Former versions did + not understand all the tags used in the document and also the + installation mechanisms for the info files was not present or + worked differently. + + On some Debian Linux based systems the used `install-info' program + works differently. Here you have to run make like this: + + make INSTALL_INFO=/path/to/GNU/install-info install + + If you change any configuration file you will need also + + * `autoconf' 2.12 + +and if you change any of the message translation files you will also +need + + * `GNU gettext' 0.10 or later + +If you upgrade your source tree using the patches made available you +probably will need those package above in any case. + Supported Configurations ------------------------ @@ -195,18 +214,16 @@ Supported Configurations following patterns: alpha-ANYTHING-linux - alpha-ANYTHING-linuxecoff iX86-ANYTHING-gnu iX86-ANYTHING-linux m68k-ANYTHING-linux - mips-ANYTHING-linux - sparc-ANYTHING-linux powerpc-ANYTHING-linux - Former versions of this library used to support the following -configurations but the current status is unknown: + Former releases of this library (version 1.09.1 and perhaps earlier +versions) used to run on the following configurations: alpha-dec-osf1 + alpha-ANYTHING-linuxecoff iX86-ANYTHING-bsd4.3 iX86-ANYTHING-isc2.2 iX86-ANYTHING-isc3.N @@ -228,6 +245,12 @@ configurations but the current status is unknown: sparc-sun-solaris2.N sparc-sun-sunos4.N + Since no one has volunteered to test and fix the above +configurations, these are not supported at the moment. It's expected +that these don't work anymore. Porting the library is not hard. If +you are interested in doing a port, please contact the glibc +maintainers by sending electronic mail to <bug-glibc@prep.ai.mit.edu>. + Each case of `iX86' can be `i386', `i486', `i586', or `i686'. All of those configurations produce a library that can run on any of these processors. The library will be optimized for the specified processor, @@ -278,11 +301,11 @@ and `config.make' which are created by running `configure'; they will be in whatever directory was current when you ran `configure'. If you think you have found some way in which the GNU C library does -not conform to the ANSI and POSIX standards (*note Standards and +not conform to the ISO and POSIX standards (*note Standards and Portability::.), that is definitely a bug. Report it! - Send bug reports to the Internet address `bug-glibc@prep.ai.mit.edu' -or the UUCP path `mit-eddie!prep.ai.mit.edu!bug-glibc'. If you have + Send bug reports to the Internet address <bug-glibc@prep.ai.mit.edu> +or the UUCP path <mit-eddie!prep.ai.mit.edu!bug-glibc>. If you have other problems with installation or use, please report those as well. If you are not sure how a function should behave, and this manual @@ -290,8 +313,8 @@ doesn't tell you, that's a bug in the manual. Report that too! If the function's behavior disagrees with the manual, then either the library or the manual has a bug, so report the disagreement. If you find any errors or omissions in this manual, please report them to the Internet -address `bug-glibc-manual@prep.ai.mit.edu' or the UUCP path -`mit-eddie!prep.ai.mit.edu!bug-glibc-manual'. +address <bug-glibc-manual@prep.ai.mit.edu> or the UUCP path +<mit-eddie!prep.ai.mit.edu!bug-glibc-manual>. Adding New Functions ==================== @@ -672,10 +695,11 @@ level of the `sysdeps' hierarchy. This directory contains subdirectories (and subdirectory trees) for various Unix variants. The functions which are system calls in most Unix systems are -automatically generated from the `syscalls.list' files for the appropriate -archirecture. The format of the syscalls.list files is quite easy: only -a few informations are necessary line the system call name, the number of -arguments and such. The files are run through the C preprocessor. +implemented in assembly code, which is generated automatically from +specifications in the file `sysdeps/unix/syscalls.list'. Some special +system calls are implemented in files that are named with a suffix of +`.S'; for example, `_exit.S'. Files ending in `.S' are run through the +C preprocessor before being fed to the assembler. These files all use a set of macros that should be defined in `sysdep.h'. The `sysdep.h' file in `sysdeps/unix' partially defines @@ -711,7 +735,7 @@ parts of the library were contributed or worked on by other people. related code were written by Michael J. Haertel. * Fast implementations of many of the string functions (`memcpy', - `strlen', etc.) were written by Torbjorn Granlund. + `strlen', etc.) were written by Torbj"orn Granlund. * The `tar.h' header file was written by David J. MacKenzie. @@ -722,7 +746,7 @@ parts of the library were contributed or worked on by other people. * The DES encryption function `crypt' and related functions were contributed by Michael Glad. - * The `ftw' function was contributed by Ian Lance Taylor. + * The `ftw' and `nftw' function was contributed by Ulrich Drepper. * The startup code to support SunOS shared libraries was contributed by Tom Quinn. @@ -749,7 +773,7 @@ parts of the library were contributed or worked on by other people. and the floating-point reading function used by `scanf', `strtod' and friends were written by Ulrich Drepper. The multi-precision integer functions used in those functions are taken from GNU MP, - which was contributed by Torbjorn Granlund. + which was contributed by Torbj"orn Granlund. * The internationalization support in the library, and the support programs `locale' and `localedef', were written by Ulrich Drepper. @@ -771,9 +795,9 @@ parts of the library were contributed or worked on by other people. * The port to Linux/m68k (`m68k-ANYTHING-linux') was contributed by Andreas Schwab. - * The ports to Linux/ARM (`arm-ANYTHING-linuxaout') and ARM standalone - (`arm-ANYTHING-none'), as well as parts of the IPv6 support code, were - contributed by Philip Blundell. + * The ports to Linux/ARM (`arm-ANYTHING-linuxaout') and ARM + standalone (`arm-ANYTHING-none'), as well as parts of the IPv6 + support code, were contributed by Philip Blundell. * Richard Henderson contributed the ELF dynamic linking code and other support for the Alpha processor. @@ -781,6 +805,12 @@ parts of the library were contributed or worked on by other people. * David Mosberger-Tang contributed the port to Linux/Alpha (`alpha-ANYTHING-linux'). + * The port to Linux on PowerPC (`powerpc-ANYTHING-linux') was + contributed by Geoffrey Keating. + + * Miles Bader wrote the argp argument-parsing package, and the + argz/envz interfaces. + * Stephen R. van den Berg contributed a highly-optimized `strstr' function. @@ -797,10 +827,9 @@ parts of the library were contributed or worked on by other people. platforms was written by Per Bothner and modified by Ulrich Drepper. - * Some of the Internet-related code (most of the `inet' - subdirectory) and several other miscellaneous functions and - header files have been included from 4.4 BSD with little or no - modification. + * The Internet-related code (most of the `inet' subdirectory) and + several other miscellaneous functions and header files have been + included from 4.4 BSD with little or no modification. All code incorporated from 4.4 BSD is under the following copyright: @@ -851,7 +880,7 @@ parts of the library were contributed or worked on by other people. `rand' and `srand' functions, were written by Earl T. Cohen for the University of California at Berkeley and are copyrighted by the Regents of the University of California. They have undergone minor - changes to fit into the GNU C library and to fit the ANSI C + changes to fit into the GNU C library and to fit the ISO C standard, but the functional code is Berkeley's. * The Internet resolver code is taken directly from BIND 4.9.5, @@ -938,187 +967,7 @@ parts of the library were contributed or worked on by other people. Carnegie Mellon University Pittsburgh PA 15213-3890 - or `Software.Distribution@CS.CMU.EDU' any improvements or + or <Software.Distribution@CS.CMU.EDU> any improvements or extensions that they make and grant Carnegie Mellon the rights to redistribute these changes. - * The `getaddrinfo' function is written by Craig Metz and it has the - following copyright: - - The Inner Net License, Version 2.00 - =================================== - - The author(s) grant permission for redistribution and use in source and - binary forms, with or without modification, of the software - and documentation provided that the following conditions are met: - - 0. If you receive a version of the software that is - specifically labelled as not being for redistribution - (check the version message and/or README), you are not - permitted to redistribute that version of the software in - any way or form. - 1. All terms of the all other applicable copyrights and - licenses must be followed. - 2. Redistributions of source code must retain the authors' - copyright notice(s), this list of conditions, and the - following disclaimer. - 3. Redistributions in binary form must reproduce the authors' - copyright notice(s), this list of conditions, and the - following disclaimer in the documentation and/or other - materials provided with the distribution. - 4. All advertising materials mentioning features or use of - this software must display the following acknowledgement - with the name(s) of the authors as specified in the - copyright notice(s) substituted where indicated: - - This product includes software developed by <name(s)>, The Inner - Net, and other contributors. - - 5. Neither the name(s) of the author(s) 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 ITS AUTHORS 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 AUTHORS 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. - - If these license terms cause you a real problem, contact the author. -+ - * The `db' library is taken from the db-2.3.4 distribution by Sleepycat - Software, and is covered by the following terms: - - /*- - * @(#)LICENSE 10.4 (Sleepycat) 7/24/97 - */ - - The following are the copyrights and redistribution conditions - that apply to this copy of the DB software. 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It does not mean source code for - * modules or files that typically accompany the operating system - * on which the executable file runs, e.g., standard library - * modules or system header files. - * - * THIS SOFTWARE IS PROVIDED BY SLEEPYCAT SOFTWARE ``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 SLEEPYCAT - * SOFTWARE 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. - */ - /* - * Copyright (c) 1990, 1993, 1994, 1995 - * 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. All advertising materials mentioning features or use of this - * software must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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. - */ - /* - * Copyright (c) 1995, 1996 - * The President and Fellows of Harvard University. 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. All advertising materials mentioning features or use of this - * software must display the following acknowledgement: - * This product includes software developed by Harvard University - * and its contributors. - * 4. 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 HARVARD AND ITS 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 HARVARD OR - * ITS 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. - */ @@ -107,7 +107,3 @@ contact <bug-glibc@prep.ai.mit.edu> int foo __P ((int, int, int, int)); Blargh! - -[16] Write an nss_hesiod module. The Hesiod daemon from the MIT Athena - project should be available. The goal is to avoid the ugly NIS - emulation interface and contacting the daemon directly. diff --git a/catgets/catgets.c b/catgets/catgets.c index d5eefc9e08..ebfb2c54cc 100644 --- a/catgets/catgets.c +++ b/catgets/catgets.c @@ -94,8 +94,9 @@ catopen (const char *cat_name, int flag) nlspath = tmp; } else - result->nlspath = __strdup (NLSPATH); + nlspath = NLSPATH; + result->nlspath = __strdup (NLSPATH); if (result->nlspath == NULL) { free ((void *) result->cat_name); diff --git a/hesiod/README.hesiod b/hesiod/README.hesiod new file mode 100644 index 0000000000..914e0d1bd9 --- /dev/null +++ b/hesiod/README.hesiod @@ -0,0 +1,150 @@ +The GNU C library contains an NSS module for the Hesiod name service. +Hesiod is a general name service for a variety of applications and is +based on the Berkeley Internet Name Daemon (BIND). + +Introduction +============ + +The Hesiod NSS module implements access to all relevant standard +Hesiod types, which means that Hesiod can be used for the `group', +`passwd' and `services' databases. There is however a restriction. +In the same way that it is impossible to use `gethostent()' to iterate +over all the data provided by DNS, it is not possible to scan the +entire Hesiod database by means of `getgrent()', `getpwent()' and +`getservent()'. Besides, Hesiod only provides support for looking up +services by name and not for looking them up by port. In essence this +means that the Hesiod name service is only consulted as a result of +one of the following function calls: + + * getgrname(), getgrgid() + * getpwname(), getpwuid() + * getservbyname() + +and their reentrant counterparts. + + +Configuring your systems +======================== + +Configuring your systems to make use use the Hesiod name service +requires one or more of the following steps, depending on whether you +are already running Hesiod in your network. + +Configuring NSS +--------------- + +First you should modify the file `/etc/nsswitch.conf' to tell +NSS for which database you want to use the Hesiod name service. If +you want to use Hesiod for all databases it can handle your +configuration file could look like this: + + # /etc/nsswitch.conf + # + # Example configuration of GNU Name Service Switch functionality. + # + + passwd: db files hesiod + group: db files hesiod + shadow: db files + + hosts: files dns + networks: files dns + + protocols: db files + services: db files hesiod + ethers: db files + rpc: db files + +For more information on NSS, please refer to the `The GNU C Library +Reference Manual'. + + +Configuring Hesiod +------------------ + +Next, you will have to configure Hesiod. If you are already running +Hesiod in your network, you probably already have a file named +`hesiod.conf' on your machines (probably as `/etc/hesiod.conf' or +`/usr/local/etc/hesiod.conf'). The Hesiod NSS module expects this +file to be found in the sysconfdir (`/usr/local/etc/hesiod.conf' by +default, see the installation notes on how to change this) or in the +location specified by the environment variable `HESIOD_CONFIG'. If +there is no configuration file you will want to create your own. It +should look something like: + + rhs=.your.domain + lhs=.ns + +The value of rhs can be overridden by the environment variable +HES_DOMAIN. + +Configuring your name servers +----------------------------- + +In addition, if you are not already running Hesiod in your network, +you need to create Hesiod information on your central name servers. +You need to run `named' from BIND 4.9 or higher on these servers, and +make them authoritative for the domain `ns.your.domain' with a line in +`/etc/named.boot' reading something like: + + primary ns.your.domain named.hesiod + +or if you are using the new BIND 8.1 or higher add something to +`/etc/named.conf' like: + + zone "ns.your.domain" { + type master; + file "named.hesiod"; + }; + +Then in the BIND working directory (usually `/var/named') create the +file `named.hesiod' containing data that looks something like: + + ; SOA and NS records. + @ IN SOA server1.your.domain admin-address.your.domain ( + 40000 ; serial - database version number + 1800 ; refresh - sec servers + 300 ; retry - for refresh + 3600000 ; expire - unrefreshed data + 7200 ) ; min + NS server1.your.domain + NS server2.your.domain + + ; Actual Hesiod data. + libc.group TXT "libc:*:123:gnu,gnat" + 123.gid CNAME libc.group + gnu.passwd TXT "gnu:*:4567:123:GNU:/home/gnu:/bin/bash" + 456.uid CNAME mark.passwd + nss.service TXT "nss;tcp;789;switch sw " + nss.service TXT "nss;udp;789;switch sw" + +where `libc' is an example of a group, `gnu' an example of an user, +and `nss' an example of a service. Note that the format used to +describe services differs from the format used in `/etc/services'. +For more information on `named' refer to the `Name Server Operations +Guide for BIND' that is included in the BIND distribution. + + +Security +======== + +Note that the information stored in the Hesiod database in principle +is publicly available. Care should be taken with including vulnerable +information like encrypted passwords in the Hesiod database. There +are some ways to improve security by using features provided by +`named' (see the discussion about `secure zones' in the BIND +documentation), but one should keep in mind that Hesiod was never +intended to distribute passwords. In the origional design +authenticating users was the job of the Kerberos service. + + +More information +================ + +For more information on the Hesiod name service take a look at some of +the papers in ftp://athena-dist.mit.edu:/pub/ATHENA/usenix and the +documentation that accompanies the source code for the Hesiod name +service library in ftp://athena-dist.mit.edu:/pub/ATHENA/hesiod. + +There is a mailing list at MIT for Hesiod users, hesiod@mit.edu. To +get yourself on or off the list, send mail to hesiod-request@mit.edu. diff --git a/hesiod/hesiod.c b/hesiod/hesiod.c index 076b6e7dbc..46ae9a988c 100644 --- a/hesiod/hesiod.c +++ b/hesiod/hesiod.c @@ -89,7 +89,7 @@ int hesiod_init(void **context) if (read_config_file(ctx, configname) >= 0) { /* The default rhs can be overridden by an environment variable. */ - p = getenv("HES_DOMAIN"); + p = __secure_getenv("HES_DOMAIN"); if (p) { if (ctx->rhs) @@ -86,22 +86,23 @@ struct FTW /* Convenient types for callback functions. */ -typedef int (*__ftw_func_t) __P ((__const char *filename, - __const struct stat *status, int flag)); +typedef int (*__ftw_func_t) __P ((__const char *__filename, + __const struct stat *__status, int __flag)); #ifdef __USE_XOPEN_EXTENDED -typedef int (*__nftw_func_t) __P ((__const char *filename, - __const struct stat *status, int flag, - struct FTW *)); +typedef int (*__nftw_func_t) __P ((__const char *__filename, + __const struct stat *__status, int __flag, + struct FTW *__info)); #endif /* Call a function on every element in a directory tree. */ -extern int ftw __P ((__const char *dir, __ftw_func_t func, int descriptors)); +extern int ftw __P ((__const char *__dir, __ftw_func_t __func, + int __descriptors)); #ifdef __USE_XOPEN_EXTENDED /* Call a function on every element in a directory tree. FLAG allows to specify the behaviour more detailed. */ -extern int nftw __P ((__const char *dir, __nftw_func_t func, - int descriptors, int flag)); +extern int nftw __P ((__const char *__dir, __nftw_func_t __func, + int __descriptors, int __flag)); #endif __END_DECLS diff --git a/io/ftwtest-sh b/io/ftwtest-sh index 79c35d4f9c..f0cd56ab02 100644 --- a/io/ftwtest-sh +++ b/io/ftwtest-sh @@ -46,18 +46,18 @@ LD_LIBRARY_PATH=$objpfx $ldso $testprogram $tmpdir | sort > $testout cat <<EOF | cmp $testout - || exit 1 -base = "$tmp/", file = "ftwtest.d", flag = FTW_D -base = "$tmp/ftwtest.d/", file = "bar", flag = FTW_D -base = "$tmp/ftwtest.d/", file = "baz", flag = FTW_F -base = "$tmp/ftwtest.d/", file = "foo", flag = FTW_D -base = "$tmp/ftwtest.d/bar/", file = "xo", flag = FTW_NS -base = "$tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D -base = "$tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F -base = "$tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN -base = "$tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_D -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F +base = "/tmp/", file = "ftwtest.d", flag = FTW_D, level = 0 +base = "/tmp/ftwtest.d/", file = "bar", flag = FTW_D, level = 1 +base = "/tmp/ftwtest.d/", file = "baz", flag = FTW_F, level = 1 +base = "/tmp/ftwtest.d/", file = "foo", flag = FTW_D, level = 1 +base = "/tmp/ftwtest.d/bar/", file = "xo", flag = FTW_NS, level = 2 +base = "/tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D, level = 2 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_D, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, level = 4 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D, level = 4 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, level = 5 EOF rm $testout @@ -65,18 +65,18 @@ LD_LIBRARY_PATH=$objpfx $ldso $testprogram --depth $tmpdir | sort > $testout cat <<EOF | cmp $testout - || exit 1 -base = "$tmp/", file = "ftwtest.d", flag = FTW_DP -base = "$tmp/ftwtest.d/", file = "bar", flag = FTW_DP -base = "$tmp/ftwtest.d/", file = "baz", flag = FTW_F -base = "$tmp/ftwtest.d/", file = "foo", flag = FTW_DP -base = "$tmp/ftwtest.d/bar/", file = "xo", flag = FTW_NS -base = "$tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_DP -base = "$tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F -base = "$tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN -base = "$tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_DP -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_DP -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F +base = "/tmp/", file = "ftwtest.d", flag = FTW_DP, level = 0 +base = "/tmp/ftwtest.d/", file = "bar", flag = FTW_DP, level = 1 +base = "/tmp/ftwtest.d/", file = "baz", flag = FTW_F, level = 1 +base = "/tmp/ftwtest.d/", file = "foo", flag = FTW_DP, level = 1 +base = "/tmp/ftwtest.d/bar/", file = "xo", flag = FTW_NS, level = 2 +base = "/tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_DP, level = 2 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_DP, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, level = 4 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_DP, level = 4 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, level = 5 EOF rm $testout @@ -84,24 +84,45 @@ LD_LIBRARY_PATH=$objpfx $ldso $testprogram --phys $tmpdir | sort > $testout cat <<EOF | cmp $testout - || exit 1 -base = "$tmp/", file = "ftwtest.d", flag = FTW_D -base = "$tmp/ftwtest.d/", file = "bar", flag = FTW_D -base = "$tmp/ftwtest.d/", file = "baz", flag = FTW_F -base = "$tmp/ftwtest.d/", file = "foo", flag = FTW_D -base = "$tmp/ftwtest.d/bar/", file = "xo", flag = FTW_NS -base = "$tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D -base = "$tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F -base = "$tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SL -base = "$tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_D -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "link@2", flag = FTW_SL -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F -base = "$tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "link@3", flag = FTW_SL +base = "/tmp/", file = "ftwtest.d", flag = FTW_D, level = 0 +base = "/tmp/ftwtest.d/", file = "bar", flag = FTW_D, level = 1 +base = "/tmp/ftwtest.d/", file = "baz", flag = FTW_F, level = 1 +base = "/tmp/ftwtest.d/", file = "foo", flag = FTW_D, level = 1 +base = "/tmp/ftwtest.d/bar/", file = "xo", flag = FTW_NS, level = 2 +base = "/tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D, level = 2 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SL, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_D, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, level = 4 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/", file = "link@2", flag = FTW_SL, level = 4 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D, level = 4 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, level = 5 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "link@3", flag = FTW_SL, level = 5 EOF rm $testout +# For the next test everything must be readable. chmod -R a+x $tmpdir + +LD_LIBRARY_PATH=$objpfx $ldso $testprogram --chdir $tmpdir | + sort > $testout + +cat <<EOF | cmp $testout - || exit 1 +base = "/tmp/", file = "ftwtest.d", flag = FTW_D, cwd = /tmp, level = 0 +base = "/tmp/ftwtest.d/", file = "bar", flag = FTW_D, cwd = /tmp/ftwtest.d, level = 1 +base = "/tmp/ftwtest.d/", file = "baz", flag = FTW_F, cwd = /tmp/ftwtest.d, level = 1 +base = "/tmp/ftwtest.d/", file = "foo", flag = FTW_D, cwd = /tmp/ftwtest.d, level = 1 +base = "/tmp/ftwtest.d/bar/", file = "xo", flag = FTW_F, cwd = /tmp/ftwtest.d/bar, level = 2 +base = "/tmp/ftwtest.d/foo/", file = "lvl1", flag = FTW_D, cwd = /tmp/ftwtest.d/foo, level = 2 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "file@1", flag = FTW_F, cwd = /tmp/ftwtest.d/foo/lvl1, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "link@1", flag = FTW_SLN, cwd = /tmp/ftwtest.d/foo/lvl1, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/", file = "lvl2", flag = FTW_D, cwd = /tmp/ftwtest.d/foo/lvl1, level = 3 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/", file = "file@2", flag = FTW_F, cwd = /tmp/ftwtest.d/foo/lvl1/lvl2, level = 4 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/", file = "lvl3", flag = FTW_D, cwd = /tmp/ftwtest.d/foo/lvl1/lvl2, level = 4 +base = "/tmp/ftwtest.d/foo/lvl1/lvl2/lvl3/", file = "file@3", flag = FTW_F, cwd = /tmp/ftwtest.d/foo/lvl1/lvl2/lvl3, level = 5 +EOF +rm $testout + rm -fr $tmpdir exit 0 diff --git a/io/ftwtest.c b/io/ftwtest.c index 6daa7e9eee..6079265175 100644 --- a/io/ftwtest.c +++ b/io/ftwtest.c @@ -42,7 +42,7 @@ cb (const char *name, const struct stat *st, int flag, struct FTW *f) printf (", cwd = %s", cwd); free (cwd); } - puts (""); + printf (", level = %d\n", f->level); return 0; } diff --git a/libio/libio.h b/libio/libio.h index 03b2afdf28..9e8c108af6 100644 --- a/libio/libio.h +++ b/libio/libio.h @@ -72,6 +72,9 @@ # define const #endif #define _IO_UNIFIED_JUMPTABLES 1 +#ifndef _G_HAVE_PRINTF_FP +# define _IO_USE_DTOA 1 +#endif #if 0 # ifdef _IO_NEED_STDARG_H diff --git a/libio/strops.c b/libio/strops.c index f7c22627e7..a9f812e045 100644 --- a/libio/strops.c +++ b/libio/strops.c @@ -200,8 +200,8 @@ _IO_ssize_t _IO_str_count (fp) _IO_FILE *fp; { - return ((fp->_IO_write_end > fp->_IO_read_end - ? fp->_IO_write_end : fp->_IO_read_end) + return ((fp->_IO_write_ptr > fp->_IO_read_end + ? fp->_IO_write_ptr : fp->_IO_read_end) - fp->_IO_read_base); } diff --git a/manual/filesys.texi b/manual/filesys.texi index 5ddd8a20a7..7e8a1a12d2 100644 --- a/manual/filesys.texi +++ b/manual/filesys.texi @@ -17,6 +17,8 @@ access permissions and modification times. file names. * Accessing Directories:: Finding out what files a directory contains. +* Working on Directory Trees:: Apply actions to all files or a selectable + subset of a directory hierachy. * Hard Links:: Adding alternate names to a file. * Symbolic Links:: A file that ``points to'' a file name. * Deleting Files:: How to delete a file, and what that means. @@ -500,6 +502,210 @@ Please note the simple selector function for this example. Since we want to see all directory entries we always return @code{1}. +@node Working on Directory Trees +@section Working on Directory Trees +@cindex directory hierachy +@cindex hierachy, directory +@cindex tree, directory + +The functions to handle files in directories described so far allowed to +retrieve all the information in small pieces or process all files in a +directory (see @code{scandir}). Sometimes it is useful to process whole +hierachies of directories and the contained files. The X/Open +specification define two functions to do this. The simpler form is +derived from an early definition in @w{System V} systems and therefore +this function is available on SVID derived systems. The prototypes and +required definitions can be found in the @file{ftw.h} header. + +Both functions of this @code{ftw} family take as one of the arguments a +reference to a callback function. The functions must be of these types. + +@deftp {Data Type} __ftw_func_t + +@smallexample +int (*) (const char *, const struct stat *, int) +@end smallexample + +Type for callback functions given to the @code{ftw} function. The first +parameter will contain a pointer to the filename, the second parameter +will point to an object of type @code{struct stat} which will be filled +for the file named by the first parameter. + +@noindent +The last parameter is a flag given more information about the current +file. It can have the following values: + +@vindex FTW_F +@vindex FTW_D +@vindex FTW_NS +@vindex FTW_DNR +@vindex FTW_SL +@table @code +@item FTW_F +The current item is a normal file or files which do not fit into one of +the following categories. This means especially special files, sockets +etc. +@item FTW_D +The current item is a directory. +@item FTW_NS +The @code{stat} call to fill the object pointed to by the second +parameter failed and so the information is invalid. +@item FTW_DNR +The item is a directory which cannot be read. +@item FTW_SL +The item is a symbolic link. Since symbolic links are normally followed +seeing this value in a @code{ftw} callback function means the referenced +file does not exist. The situation for @code{nftw} is different. + +This value is only available if the program is compiled with +@code{_BSD_SOURCE} or @code{_XOPEN_EXTENDED} defined before including +the first header. The original SVID systems do not have symbolic links. +@end table +@end deftp + +@deftp {Data Type} __nftw_func_t + +@smallexample +int (*) (const char *, const struct stat *, int, struct FTW *) +@end smallexample + +@vindex FTW_DP +@vindex FTW_SLN +The first three arguments have the same as for the @code{__ftw_func_t} +type. A difference is that for the third argument some additional +values are defined to allow finer differentiation: +@table @code +@item FTW_DP +The current item is a directory and all subdirectories have already been +visited and reported. This flag is returned instead of @code{FTW_D} if +the @code{FTW_DEPTH} flag is given to @code{nftw} (see below). +@item FTW_SLN +The current item is a stale symbolic link. The file it points to does +not exist. +@end table + +The last parameter of the callback function is a pointer to a structure +with some extra information as described below. +@end deftp + +@deftp {Data Type} {struct FTW} +The contained information helps to interpret the name parameter and +gives some information about current state of the traversal of the +directory hierachy. + +@table @code +@item int base +The value specifies which part of the filename argument given in the +first parameter to the callback function is the name of the file. The +rest of the string is the path to locate the file. This information is +especially important if the @code{FTW_CHDIR} flag for @code{nftw} was +set since then the current directory is the one the current item is +found in. +@item int level +While processing the directory the functions tracks how many directories +have been examine to find the current item. This nesting level is +@math{0} for the item given starting item (file or directory) and is +incremented by one for each entered directory. +@end table +@end deftp + + +@comment ftw.h +@comment SVID +@deftypefun int ftw (const char *@var{filename}, __ftw_func_t @var{func}, int @var{descriptors}) +The @code{ftw} function calls the callback function given in the +parameter @var{func} for every item which is found in the directory +specified by @var{filename} and all directories below. The function +follows symbolic links if necessary but does not process an item twice. +If @var{filename} names no directory this item is the only object +reported by calling the callback function. + +The filename given to the callback function is constructed by taking the +@var{filename} parameter and appending the names of all passed +directories and then the local file name. So the callback function can +use this parameter to access the file. Before the callback function is +called @code{ftw} calls @code{stat} for this file and passes the +information up to the callback function. If this @code{stat} call was +not successful the failure is indicated by setting the falg argument of +the callback function to @code{FTW_NS}. Otherwise the flag is set +according to the description given in the description of +@code{__ftw_func_t} above. + +The callback function is expected to return @math{0} to indicate that no +error occurred and the processing should be continued. If an error +occurred in the callback function or the call to @code{ftw} shall return +immediately the callback function can return a value other than +@math{0}. This is the only correct way to stop the function. The +program must not use @code{setjmp} or similar techniques to continue the +program in another place. This would leave the resources allocated in +the @code{ftw} function allocated. + +The @var{descriptors} parameter to the @code{ftw} function specifies how +many file descriptors the @code{ftw} function is allowed to consume. +The more descriptors can be used the faster the function can run. For +each level of directories at most one descriptor is used so that for +very deep directory hierachies the limit on open file descriptors for +the process or the system can be exceeded. Beside this the limit on +file descriptors is counted together for all threads in a multi-threaded +program and therefore it is always good too limit the maximal number of +open descriptors to a reasonable number. + +The return value of the @code{ftw} function is @math{0} if all callback +function calls returned @math{0} and all actions performed by the +@code{ftw} succeeded. If some function call failed (other than calling +@code{stat} on an item) the function return @math{-1}. If a callback +function returns a value other than @math{0} this value is returned as +the return value of @code{ftw}. +@end deftypefun + +@comment ftw.h +@comment XPG4.2 +@deftypefun int nftw (const char *@var{filename}, __nftw_func_t @var{func}, int @var{descriptors}, int @var{flag}) +The @code{nftw} functions works like the @code{ftw} functions. It calls +the callback function @var{func} for all items it finds in the directory +@var{filename} and below. At most @var{descriptors} file descriptors +are consumed during the @code{nftw} call. + +The differences are that for one the callback function is of a different +type. It is of type @w{@code{struct FTW *}} and provides the callback +functions the information described above. + +The second difference is that @code{nftw} takes an additional fourth +argument which is @math{0} or a combination of any of the following +values, combined using bitwise OR. + +@table @code +@item FTW_PHYS +While traversing the directory symbolic links are not followed. I.e., +if this flag is given symbolic links are reported using the +@code{FTW_SL} value for the type parameter to the callback function. +Please note that if this flag is used the appearence of @code{FTW_SL} in +a callback function does not mean the referenced file does not exist. +To indicate this the extra value @code{FTW_SLN} exists. +@item FTW_MOUNT +The callback function is only called for items which are on the same +mounted filesystem as the directory given as the @var{filename} +parameter to @code{nftw}. +@item FTW_CHDIR +If this flag is given the current working directory is changed to the +directory containing the reported object before the callback function is +called. +@item FTW_DEPTH +If this option is given the function visits first all files and +subdirectories before the callback function is called for the directory +itself (depth-first processing). This also means the type flag given to +the callback function is @code{FTW_DP} and not @code{FTW_D}. +@end table + +The return value is computed in the same way as for @code{ftw}. +@code{nftw} return @math{0} if no failure occurred in @code{nftw} and +all callback function call return values are also @math{0}. For +internal errors such as memory problems @math{-1} is returned and +@var{errno} is set accordingly. If the return value of a callback +invocation is nonzero this very same value is returned. +@end deftypefun + + @node Hard Links @section Hard Links @cindex hard link diff --git a/manual/maint.texi b/manual/maint.texi index 3675c4faba..d8e835f441 100644 --- a/manual/maint.texi +++ b/manual/maint.texi @@ -176,11 +176,15 @@ facilities, type @code{make check}. This will produce several files with names like @file{@var{program}.out}. To format the @cite{GNU C Library Reference Manual} for printing, type -@w{@code{make dvi}}. +@w{@code{make dvi}}. You need a working @TeX{} installation to do this. To install the library and its header files, and the Info files of the manual, type @code{make install}. This will build things if necessary, -before installing them.@refill +before installing them. If you want to install the files in a different +place than the one specified at configuration time you can specify a +value for the Makefile variable @code{install_root} on the command line. +This is useful to create chroot'ed environment or to prepare binary +releases.@refill @node Tools for Installation @appendixsubsec Recommended Tools to Install the GNU C Library @@ -192,15 +196,17 @@ build the GNU C library: @itemize @bullet @item -@code{make} 3.75 +@code{make} 3.76.1 You need the latest version of GNU @code{make}. Modifying the GNU C Library to work with other @code{make} programs would be so hard that we -recommend you port GNU @code{make} instead. @strong{Really.} -We recommend version GNU @code{make} version 3.75 or later. +recommend you port GNU @code{make} instead. @strong{Really.} We +recommend version GNU @code{make} version 3.75, 3.76.1 or later. +Version 3.76 is known to have a bug which only shows up in big projects +like GNU @code{libc}. @item -GCC 2.7.2 +GCC 2.7.2.3 On most platforms, the GNU C library can only be compiled with the GNU C compiler. We recommend GCC version 2.7.2 or later; earlier versions may @@ -216,8 +222,43 @@ Using the GNU @code{binutils} (assembler, linker, and related tools) is preferable when possible, and they are required to build an ELF shared C library. We recommend @code{binutils} version 2.8.1 or later; earlier versions are known to have problems or to not support all architectures. + +@item +@code{texinfo} 3.11 + +To correctly translate and install the Texinfo documentation you need +this version of the @code{texinfo} package. Former versions did not +understand all the tags used in the document and also the installation +mechanisms for the info files was not present or worked differently. + +On some Debian Linux based systems the used @code{install-info} program +works differently. Here you have to run make like this: + +@smallexample +make INSTALL_INFO=/path/to/GNU/install-info install +@end smallexample +@end itemize + +If you change any configuration file you will need also + +@itemize @bullet +@item +@code{autoconf} 2.12 @end itemize +@noindent +and if you change any of the message translation files you will also need + +@itemize @bullet +@item +@code{GNU gettext} 0.10 or later +@end itemize + +@noindent +If you upgrade your source tree using the patches made available you probably +will need those package above in any case. + + @node Supported Configurations @appendixsubsec Supported Configurations @cindex configurations, all supported @@ -834,7 +875,7 @@ The DES encryption function @code{crypt} and related functions were contributed by Michael Glad. @item -The @code{ftw} function was contributed by Ian Lance Taylor. +The @code{ftw} and @code{nftw} function was contributed by Ulrich Drepper. @item The startup code to support SunOS shared libraries was contributed by @@ -894,6 +935,11 @@ The port to Linux/m68k (@code{m68k-@var{anything}-linux}) was contributed by Andreas Schwab. @item +The ports to Linux/ARM (@code{arm-@var{ANYTHING}-linuxaout}) and ARM +standalone (@code{arm-@var{ANYTHING}-none}), as well as parts of the +IPv6 support code, were contributed by Philip Blundell. + +@item Richard Henderson contributed the ELF dynamic linking code and other support for the Alpha processor. diff --git a/manual/search.texi b/manual/search.texi index abb93bb5a8..356d976555 100644 --- a/manual/search.texi +++ b/manual/search.texi @@ -14,9 +14,11 @@ and the total number of elements. * Array Search Function:: The @code{bsearch} function. * Array Sort Function:: The @code{qsort} function. * Search/Sort Example:: An example program. +* Hash Search Function:: The @code{hsearch} function. +* Tree Search Function:: The @code{tsearch} function. @end menu -@node Comparison Functions, Array Search Function, , Searching and Sorting +@node Comparison Functions @section Defining the Comparison Function @cindex Comparison Function @@ -52,12 +54,53 @@ comparison functions. This type is a GNU extension. int comparison_fn_t (const void *, const void *); @end smallexample -@node Array Search Function, Array Sort Function, Comparison Functions, Searching and Sorting +@node Array Search Function @section Array Search Function @cindex search function (for arrays) @cindex binary search function (for arrays) @cindex array search function +Generally searching for a specific element in an array means that +potentially all elements must be checked. The GNU C library contains +functions to perform linear search. The prototypes for the following +two functions can be found in @file{search.h}. + +@comment search.h +@comment SVID +@deftypefun {void *} lfind (const void *@var{key}, void *@var{base}, size_t *@var{nmemb}, size_t @var{size}, comparison_fn_t @var{compar}) +The @code{lfind} function searches in the array with @code{*@var{nmemb}} +elements of @var{size} bytes pointed to by @var{base} for an element +which matches the one pointed to by @var{key}. The function pointed to +by @var{compar} is used decide whether two elements match. + +The return value is a pointer to the matching element in the array +starting at @var{base} if it is found. If no matching element is +available @code{NULL} is returned. + +The mean runtime of this function is @code{*@var{nmemb}}/2. This +function should only be used elements often get added to or deleted from +the array in which case it might not be useful to sort the array before +searching. +@end deftypefun + +@comment search.h +@comment SVID +@deftypefun {void *} lsearch (const void *@var{key}, void *@var{base}, size_t *@var{nmemb}, size_t @var{size}, comparison_fn_t @var{compar}) +The @code{lsearch} function is similar to the @code{lfind} function. It +searches the given array for an element and returns it if found. The +difference is that if no matching element is found the @code{lsearch} +function adds the object pointed to by @var{key} (with a size of +@var{size} bytes) at the end of the array and it increments the value of +@code{*@var{nmemb}} to reflect this addition. + +This means for the caller that if it is not sure that the array contains +the element one is searching for the memory allocated for the array +starting at @var{base} must have room for at least @var{size} more +bytes. If one is sure the element is in the array it is better to use +@code{lfind} so having more room in the array is always necessary when +calling @code{lsearch}. +@end deftypefun + To search a sorted array for an element matching the key, use the @code{bsearch} function. The prototype for this function is in the header file @file{stdlib.h}. @@ -85,7 +128,7 @@ This function derives its name from the fact that it is implemented using the binary search algorithm. @end deftypefun -@node Array Sort Function, Search/Sort Example, Array Search Function, Searching and Sorting +@node Array Sort Function @section Array Sort Function @cindex sort function (for arrays) @cindex quick sort function (for arrays) @@ -138,7 +181,7 @@ The @code{qsort} function derives its name from the fact that it was originally implemented using the ``quick sort'' algorithm. @end deftypefun -@node Search/Sort Example, , Array Sort Function, Searching and Sorting +@node Search/Sort Example @section Searching and Sorting Example Here is an example showing the use of @code{qsort} and @code{bsearch} @@ -191,3 +234,318 @@ Kermit, the frog Gonzo, the whatever Couldn't find Janice. @end smallexample + + +@node Hash Search Function +@section The @code{hsearch} function. + +The functions mentioned so far in this chapter are searching in a sorted +or unsorted array. There are other methods to organize information +which later should be searched. The costs of insert, delete and search +differ. One possible implementation is using hashing tables. + +@comment search.h +@comment SVID +@deftypefun int hcreate (size_t @var{nel}) +The @code{hcreate} function creates a hashing table which can contain at +least @var{nel} elements. There is no possibility to grow this table so +it is necessary to choose the value for @var{nel} wisely. The used +methods to implement this function might make it necessary to make the +number of elements in the hashing table larger than the expected maximal +number of elements. Hashing tables usually work inefficient if they are +filled 80% or more. The constant access time guaranteed by hashing can +only be achieved if few collisions exist. See Knuth's ``The Art of +Computer Programming, Part 3: Searching and Sorting'' for more +information. + +The weakest aspect of this function is that there can be at most one +hashing table used throught the whole program. The table is allocated +in local memory out of control of the programmer. As an extension the +GNU C library provides an additional set of functions with an reentrant +interface which provide a similar interface but which allow to keep +arbitrary many hashing tables. + +It is possible to use more than one hashing table in the program run if +the former table is first destroyed by a call to @code{hdestroy}. + +The function returns a non-zero value if successful. If it return zero +something went wrong. This could either mean there is already a hashing +table in use or the program runs out of memory. +@end deftypefun + +@comment search.h +@comment SVID +@deftypefun void hdestroy (void) +The @code{hdestroy} function can be used to free all the resources +allocated in a previous call of @code{hcreate}. After a call to this +function it is again possible to call @code{hcreate} and allocate a new +table with possibly different size. + +It is important to remember that the elements contained in the hashing +table at the time @code{hdestroy} is called are @emph{not} freed by this +function. It is the responsibility of the program code to free those +strings (if necessary at all). Freeing all the element memory iss not +possible without extra, separately kept information since there is no +function to iterate through all available elements in the hashing table. +If it is really necessary to free a table and all elements the +programmer has to keep a list of all table elements and before calling +@code{hdestroy} s/he has to free all element's data using this list. +This is a very unpleasent mechanism and it also shows that this kind of +hashing tables is mainly meant for tables which are created once and +used until the end of the program run. +@end deftypefun + +Entries of the hashing table and keys for the search are defined using +this type: + +@deftp {Data type} {struct ENTRY} +Both elements of this structure are pointers to zero-terminated strings. +This is a limiting restriction of the functionality of the +@code{hsearch} functions. They can only be used for data sets which use +the NUL character always and solely to terminate the records. It is not +possible to handle general binary data. + +@table @code +@item char *key +Pointer to a zero-terminated string of characters describing the key for +the search or the element in the hashing table. +@item char *data +Pointer to a zero-terminated string of characters describing the data. +If the functions will be called only for searching an existing entry +this element might stay undefined since it is not used. +@end table +@end deftp + +@comment search.h +@comment SVID +@deftypefun {ENTRY *} hsearch (ENTRY @var{item}, ACTION @var{action}) +To search in a hashing table created using @code{hcreate} the +@code{hsearch} function must be used. This function can perform simple +search for an element (if @var{action} has the @code{FIND}) or it can +alternatively insert the key element into the hashing table, possibly +replacing a previous value (if @var{action} is @code{ENTER}). + +The key is denoted by a pointer to an object of type @code{ENTRY}. For +locating the corresponding position in the hashing table only the +@code{key} element of the structure is used. + +The return value depends on the @var{action} parameter value. If it is +@code{FIND} the value is a pointer to the matching element in the +hashing table or @code{NULL} if no matching element exists. If +@var{action} is @code{ENTER} the return value is only @code{NULL} if the +programs runs out of memory while adding the new element to the table. +Otherwise the return value is a pointer to the element in the hashing +table which contains newly added element based on the data in @var{key}. +@end deftypefun + +As mentioned before the hashing table used by the functions described so +far is global and there can be at any time at most one hashing table in +the program. A solution is to use the following functions which are a +GNU extension. All have in common that they operate on a hashing table +which is described by the content of an object of the type @code{struct +hsearch_data}. This type should be treated as opaque, none of its +members should be changed directly. + +@comment search.h +@comment GNU +@deftypefun int hcreate_r (size_t @var{nel}, struct hsearch_data *@var{htab}) +The @code{hcreate_r} function intializes the object pointed to by +@var{htab} to contain a hashing table with at least @var{nel} elements. +So this function is equivalent to the @code{hcreate} function except +that the initialized data structure is controlled by the user. + +This allows to have more than once hashing table at one time. The +memory necessary for the @code{struct hsearch_data} object can be +allocated dynamically. + +The return value is non-zero if the operation were successful. if the +return value is zero something went wrong which probably means the +programs runs out of memory. +@end deftypefun + +@comment search.h +@comment GNU +@deftypefun void hdestroy_r (struct hsearch_data *@var{htab}) +The @code{hdestroy_r} function frees all resources allocated by the +@code{hcreate_r} function for this very same object @var{htab}. As for +@code{hdestroy} it is the programs responsibility to free the strings +for the elements of the table. +@end deftypefun + +@comment search.h +@comment GNU +@deftypefun int hsearch_r (ENTRY @var{item}, ACTION @var{action}, ENTRY **@var{retval}, struct hsearch_data *@var{htab}) +The @code{hsearch_r} function is equivalent to @code{hsearch}. The +meaning of the first two arguments is identical. But instead of +operating on a single global hashing table the functio works on the +table described by the object pointed to by @var{htab} (which is +initialized by a call to @code{hcreate_r}). + +Another difference to @code{hcreate} is that the pointer to the found +entry in the table is not the return value of the functions. It is +returned by storing it in a pointer variables pointed to by the +@var{retval} parameter. The return value of the function is an integer +value indicating success if it is non-zero and failure if it is zero. +In the later case the global variable @var{errno} signals the reason for +the failure. + +@table @code +@item ENOMEM +The table is filled and @code{hsearch_r} was called with an so far +unknown key and @var{action} set to @code{ENTER}. +@item ESRCH +The @var{action} parameter is @code{FIND} and no corresponding element +is found in the table. +@end table +@end deftypefun + + +@node Tree Search Function +@section The @code{tsearch} function. + +Another common form to organize data for efficient search is to use +trees. The @code{tsearch} function family provides a nice interface to +functions to organize possibly large amounts of data by providing a mean +access time proportional to the logarithm of the number of elements. +The GNU C library implementation even guarantees that this bound is +never exceeded even for input data which cause problems for simple +binary tree implementations. + +The functions desribed in the chapter are all described in the @w{System +V} and X/Open specifications and are therefore quite portable. + +In contrast to the @code{hsearch} functions the @code{tsearch} functions +can be used with arbitrary data and not only zero-terminated strings. + +The @code{tsearch} functions have the advantage that no function to +initialize data structures is necessary. A simple pointer of type +@code{void *} initialized to @code{NULL} is a valid tree and can be +extended or searched. + +@comment search.h +@comment SVID +@deftypefun {void *} tsearch (const void *@var{key}, void **@var{rootp}, comparison_fn_t @var{compar}) +The @code{tsearch} function searches in the tree pointed to by +@code{*@var{rootp}} for an element matching @var{key}. The function +pointed to by @var{compar} is used to determine wether two elements +match. @xref{Comparison Functions} for a specification of the functions +which can be used for the @var{compar} parameter. + +If the tree does not contain a matching entry the @var{key} value will +be added to the tree. @code{tsearch} does not make a copy of the object +pointed to by @var{key} (how could it since the size is unknown). +Instead it adds a reference to this object which means the object must +be available as long as the tree data structure is used. + +The tree is represented by a pointer to a pointer since it is sometimes +necessary to change the root node of the tree. So it must not be +assumed that the variable pointed to by @var{rootp} has the same value +after the call. This also shows that it is not safe to call the +@code{tsearch} function more than once at the same time using the same +tree. It is no problem to run it more than once at a time on different +trees. + +The return value is a pointer to the matching element in the tree. If a +new element was created the pointer points to the new data (which is in +fact @var{key}). If an entry had to be created and the program ran out +of space @code{NULL} is returned. +@end deftypefun + +@comment search.h +@comment SVID +@deftypefun {void *} tfind (const void *@var{key}, void *const *@var{rootp}, comparison_fn_t @var{compar}) +The @code{tfind} function is similar to the @code{tsearch} function. It +locates an element matching the one pointed to by @var{key} and returns +a pointer to this element. But if no matching element is available no +new element is entered (note that the @var{rootp} parameter points to a +constant pointer). Instead the function returns @code{NULL}. +@end deftypefun + +Another advantage of the @code{tsearch} function in contrast to the +@code{hsearch} functions is that there is an easy way to remove +elements. + +@comment search.h +@comment SVID +@deftypefun {void *} tdelete (const void *@var{key}, void **@var{rootp}, comparison_fn_t @var{compar}) +To remove a specific element matching @var{key} from the tree +@code{tdelete} can be used. It locates the matching element using the +same method as @code{tfind}. The corresponding element is then removed +and the data if this tree node is returned by the function. If there is +no matching entry in the tree nothing can be deleted and the function +returns @code{NULL}. +@end deftypefun + +@comment search.h +@comment GNU +@deftypefun void tdestroy (void *@var{vroot}, __free_fn_t @var{freefct}) +If the complete search tree has to be removed one can use +@code{tdestroy}. It frees all resources allocated by the @code{tsearch} +function to generate the tree pointed to by @var{vroot}. + +For the data in each tree node the function @var{freefct} is called. +The pointer to the data is passed as the argument to the function. If +no such work is necessary @var{freefct} must point to a function doing +nothing. It is called in any case. + +This function is a GNU extension and not covered by the @w{System V} or +X/Open specifications. +@end deftypefun + +In addition to the function to create and destroy the tree data +structure there is another function which allows to apply a function on +all elements of the tree. The function must have this type: + +@smallexample +int __action_fn_t (const void *nodep, VISIT value, int level); +@end smallexample + +The @var{nodep} is the data value of the current node (nce given as the +@var{key} argument to @code{tsearch}). @var{level} is a numeric value +which corresponds to the depth of the current node in the tree. The +root node has the depth @math{0} and its children have a depth of +@math{1} and so on. The @code{VISIT} type is an enumeration type. + +@deftp {Data Type} VISIT +The @code{VISIT} value indicates the status of the current node in the +tree and how the function is called. The status of a node is either +`leaf' or `internal node'. For each leaf node the function is called +exactly once, for each internal node it is called three times: before +the first child is processed, after the first child is processed and +after both childs are processed. This makes it possible to handle all +three methods of tree traversal (or even a combination of them). + +@table @code +@item preorder +The current node is an internal node and the function is called before +the first child was processed. +@item endorder +The current node is an internal node and the function is called after +the first child was processed. +@item postorder +The current node is an internal node and the function is called after +the second child was processed. +@item leaf +The current node is a leaf. +@end table +@end deftp + +@comment search.h +@comment SVID +@deftypefun void twalk (const void *@var{root}, __action_fn_t @var{action}) +For each node in the tree with a node pointed to by @var{root} the +@code{twalk} function calls the function provided by the parameter +@var{action}. For leaf nodes the function is called exactly once with +@var{value} set to @code{leaf}. For internal nodes the function is +called three times, setting the @var{value} parameter or @var{action} to +the appropriate value. The @var{level} argument for the @var{action} +function is computed while descending the tree with increasing the value +by one for the escend to a child, starting with the value @math{0} for +the root node. + +Since the functions used for the @var{action} parameter to @code{twalk} +must not modify the tree data it is safe to run @code{twalk} is more +than one thread at the same time working on the same tree. It is also +safe to call @code{tfind} in parallel. Functions which modify the tree +must not be used. Otherwise the behaviour is undefined. +@end deftypefun diff --git a/misc/hsearch_r.c b/misc/hsearch_r.c index 980b7c8d72..d9255e1c6b 100644 --- a/misc/hsearch_r.c +++ b/misc/hsearch_r.c @@ -1,6 +1,6 @@ -/* Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc. - Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu> +/* Copyright (C) 1993, 1995, 1996, 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1993. 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 @@ -143,15 +143,6 @@ hsearch_r (item, action, retval, htab) unsigned int len = strlen (item.key); unsigned int idx; - /* If table is full and another entry should be entered return with - error. */ - if (action == ENTER && htab->filled == htab->size) - { - __set_errno (ENOMEM); - *retval = NULL; - return 0; - } - /* Compute an value for the given string. Perhaps use a better method. */ hval = len; count = len; @@ -213,6 +204,15 @@ hsearch_r (item, action, retval, htab) /* An empty bucket has been found. */ if (action == ENTER) { + /* If table is full and another entry should be entered return + with error. */ + if (action == ENTER && htab->filled == htab->size) + { + __set_errno (ENOMEM); + *retval = NULL; + return 0; + } + htab->table[idx].used = hval; htab->table[idx].entry = item; diff --git a/misc/search.h b/misc/search.h index 2b0106463d..1cd4fdb9ef 100644 --- a/misc/search.h +++ b/misc/search.h @@ -52,6 +52,10 @@ extern void remque __P ((void *__elem)); #ifndef __COMPAR_FN_T # define __COMPAR_FN_T typedef int (*__compar_fn_t) __P ((__const __ptr_t, __const __ptr_t)); + +# ifdef __USE_GNU +typedef __compar_fn_t comparison_fn_t; +# endif #endif /* Action which shall be performed in the call the hsearch. */ diff --git a/posix/Makefile b/posix/Makefile index 2b14fac138..cbcb6d1b1b 100644 --- a/posix/Makefile +++ b/posix/Makefile @@ -52,6 +52,7 @@ routines := \ aux := init-posix environ tests := tstgetopt testfnm runtests +test-srcs := globtest others := getconf install-bin := getconf install-lib := libposix.a diff --git a/stdlib/stdlib.h b/stdlib/stdlib.h index 7963cb6fec..a92df4bc9e 100644 --- a/stdlib/stdlib.h +++ b/stdlib/stdlib.h @@ -210,58 +210,90 @@ extern unsigned long long int __strtoull_internal __P ((__const char * #if defined __OPTIMIZE__ && __GNUC__ >= 2 /* Define inline functions which call the internal entry points. */ -extern __inline double strtod (__const char *__restrict __nptr, - char **__restrict __endptr) -{ return __strtod_internal (__nptr, __endptr, 0); } -extern __inline long int strtol (__const char *__restrict __nptr, - char **__restrict __endptr, int __base) -{ return __strtol_internal (__nptr, __endptr, __base, 0); } -extern __inline unsigned long int strtoul (__const char *__restrict __nptr, - char **__restrict __endptr, - int __base) -{ return __strtoul_internal (__nptr, __endptr, __base, 0); } - -#ifdef __USE_GNU -extern __inline float strtof (__const char *__restrict __nptr, - char **__restrict __endptr) -{ return __strtof_internal (__nptr, __endptr, 0); } -extern __inline __long_double_t strtold (__const char *__restrict __nptr, - char **__restrict __endptr) -{ return __strtold_internal (__nptr, __endptr, 0); } -#endif - -#ifdef __USE_BSD -extern __inline long long int strtoq (__const char *__restrict __nptr, - char **__restrict __endptr, int __base) -{ return __strtoll_internal (__nptr, __endptr, __base, 0); } -extern __inline unsigned long long int strtouq (__const char *__restrict __nptr, - char **__restrict __endptr, - int __base) -{ return __strtoull_internal (__nptr, __endptr, __base, 0); } -#endif - -#if defined __USE_MISC || defined __USE_ISOC9X -extern __inline long long int strtoll (__const char *__restrict __nptr, - char **__restrict __endptr, int __base) -{ return __strtoll_internal (__nptr, __endptr, __base, 0); } -extern __inline unsigned long long int strtoull (__const char * - __restrict __nptr, - char **__restrict __endptr, - int __base) -{ return __strtoull_internal (__nptr, __endptr, __base, 0); } -#endif - -extern __inline double atof (__const char *__nptr) -{ return strtod (__nptr, (char **) NULL); } -extern __inline int atoi (__const char *__nptr) -{ return (int) strtol (__nptr, (char **) NULL, 10); } -extern __inline long int atol (__const char *__nptr) -{ return strtol (__nptr, (char **) NULL, 10); } - -#if defined __USE_MISC || defined __USE_ISOC9X -extern __inline long long int atoll (__const char *__nptr) -{ return strtoll (__nptr, (char **) NULL, 10); } -#endif +extern __inline double +strtod (__const char *__restrict __nptr, char **__restrict __endptr) +{ + return __strtod_internal (__nptr, __endptr, 0); +} +extern __inline long int +strtol (__const char *__restrict __nptr, char **__restrict __endptr, + int __base) +{ + return __strtol_internal (__nptr, __endptr, __base, 0); +} +extern __inline unsigned long int +strtoul (__const char *__restrict __nptr, char **__restrict __endptr, + int __base) +{ + return __strtoul_internal (__nptr, __endptr, __base, 0); +} + +# ifdef __USE_GNU +extern __inline float +strtof (__const char *__restrict __nptr, char **__restrict __endptr) +{ + return __strtof_internal (__nptr, __endptr, 0); +} +extern __inline __long_double_t +strtold (__const char *__restrict __nptr, char **__restrict __endptr) +{ + return __strtold_internal (__nptr, __endptr, 0); +} +# endif + +# ifdef __USE_BSD +extern __inline long long int +strtoq (__const char *__restrict __nptr, char **__restrict __endptr, + int __base) +{ + return __strtoll_internal (__nptr, __endptr, __base, 0); +} +extern __inline unsigned long long int +strtouq (__const char *__restrict __nptr, char **__restrict __endptr, + int __base) +{ + return __strtoull_internal (__nptr, __endptr, __base, 0); +} +# endif + +# if defined __USE_MISC || defined __USE_ISOC9X +extern __inline long long int +strtoll (__const char *__restrict __nptr, char **__restrict __endptr, + int __base) +{ + return __strtoll_internal (__nptr, __endptr, __base, 0); +} +extern __inline unsigned long long int +strtoull (__const char * __restrict __nptr, char **__restrict __endptr, + int __base) +{ + return __strtoull_internal (__nptr, __endptr, __base, 0); +} +# endif + +extern __inline double +atof (__const char *__nptr) +{ + return strtod (__nptr, (char **) NULL); +} +extern __inline int +atoi (__const char *__nptr) +{ + return (int) strtol (__nptr, (char **) NULL, 10); +} +extern __inline long int +atol (__const char *__nptr) +{ + return strtol (__nptr, (char **) NULL, 10); +} + +# if defined __USE_MISC || defined __USE_ISOC9X +extern __inline long long int +atoll (__const char *__nptr) +{ + return strtoll (__nptr, (char **) NULL, 10); +} +# endif #endif /* Optimizing GCC >=2. */ @@ -304,7 +336,7 @@ extern __ptr_t __setstate __P ((__ptr_t __statebuf)); extern __ptr_t setstate __P ((__ptr_t __statebuf)); -#ifdef __USE_MISC +# ifdef __USE_MISC /* Reentrant versions of the `random' family of functions. These functions all use the following data structure to contain state, rather than global state variables. */ @@ -333,7 +365,7 @@ extern int initstate_r __P ((unsigned int __seed, __ptr_t __statebuf, extern int __setstate_r __P ((__ptr_t __statebuf, struct random_data *__buf)); extern int setstate_r __P ((__ptr_t __statebuf, struct random_data *__buf)); -#endif /* Use misc. */ +# endif /* Use misc. */ #endif /* Use SVID || extended X/Open. */ @@ -441,7 +473,7 @@ extern void cfree __P ((__ptr_t __ptr)); #endif /* Use misc. */ #if defined __USE_GNU || defined __USE_BSD || defined __USE_MISC -#include <alloca.h> +# include <alloca.h> #endif /* Use GNU, BSD, or misc. */ #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED @@ -545,12 +577,12 @@ extern char *realpath __P ((__const char *__name, char *__resolved)); /* Shorthand for type of comparison functions. */ #ifndef __COMPAR_FN_T -#define __COMPAR_FN_T +# define __COMPAR_FN_T typedef int (*__compar_fn_t) __P ((__const __ptr_t, __const __ptr_t)); -#endif -#ifdef __USE_GNU +# ifdef __USE_GNU typedef __compar_fn_t comparison_fn_t; +# endif #endif /* Do a binary search for KEY in BASE, which consists of NMEMB elements @@ -568,7 +600,7 @@ extern void qsort __P ((__ptr_t __base, size_t __nmemb, size_t __size, /* Return the absolute value of X. */ extern int abs __P ((int __x)) __attribute__ ((__const__)); extern long int labs __P ((long int __x)) __attribute__ ((__const__)); -#if defined __USE_ISOC9X +#ifdef __USE_ISOC9X extern long long int llabs __P ((long long int __x)) __attribute__ ((__const__)); #endif @@ -643,8 +675,11 @@ extern int mbtowc __P ((wchar_t *__restrict __pwc, extern int wctomb __P ((char *__s, wchar_t __wchar)); #if defined __OPTIMIZE__ && __GNUC__ >= 2 -extern __inline int mblen (__const char *__s, size_t __n) -{ return mbtowc ((wchar_t *) NULL, __s, __n); } +extern __inline int +mblen (__const char *__s, size_t __n) +{ + return mbtowc ((wchar_t *) NULL, __s, __n); +} #endif /* Optimizing GCC >=2. */ @@ -671,7 +706,7 @@ extern int rpmatch __P ((__const char *__response)); optional value introduced by an equal sign. If the suboption is not part of TOKENS return in *VALUEP beginning of unknown suboption. On exit *OPTIONP is set to the beginning of the next - otken or at the terminating NUL character. */ + token or at the terminating NUL character. */ extern int getsubopt __P ((char **__optionp, __const char *__const *__tokens, char **__valuep)); #endif diff --git a/stdlib/strtol.c b/stdlib/strtol.c index 97ad23453b..19e4a52880 100644 --- a/stdlib/strtol.c +++ b/stdlib/strtol.c @@ -184,6 +184,11 @@ extern int errno; # define TOUPPER(Ch) towupper (Ch) # endif # else +# if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII) +# define IN_CTYPE_DOMAIN(c) 1 +# else +# define IN_CTYPE_DOMAIN(c) isascii(c) +# endif # define L_(Ch) Ch # define UCHAR_TYPE unsigned char # define STRING_TYPE char @@ -192,9 +197,9 @@ extern int errno; # define ISALPHA(Ch) __isalpha_l ((Ch), loc) # define TOUPPER(Ch) __toupper_l ((Ch), loc) # else -# define ISSPACE(Ch) isspace (Ch) -# define ISALPHA(Ch) isalpha (Ch) -# define TOUPPER(Ch) toupper (Ch) +# define ISSPACE(Ch) (IN_CTYPE_DOMAIN (Ch) && isspace (Ch)) +# define ISALPHA(Ch) (IN_CTYPE_DOMAIN (Ch) && isalpha (Ch)) +# define TOUPPER(Ch) (IN_CTYPE_DOMAIN (Ch) ? toupper (Ch) : (Ch)) # endif #endif diff --git a/string/argz.h b/string/argz.h index d5847cb425..20e8a55321 100644 --- a/string/argz.h +++ b/string/argz.h @@ -27,7 +27,7 @@ #include <string.h> /* Need size_t, and strchr is called below. */ #ifndef __const -#define __const const +# define __const const #endif #ifndef __error_t_defined @@ -133,7 +133,7 @@ extern char *__argz_next __P ((char *argz, size_t __argz_len, extern char *argz_next __P ((char *argz, size_t __argz_len, __const char *entry)); -#if defined (__OPTIMIZE__) && __GNUC__ >= 2 +#if defined __OPTIMIZE__ && __GNUC__ >= 2 extern inline char * __argz_next (char *__argz, size_t __argz_len, __const char *__entry) { @@ -142,7 +142,7 @@ __argz_next (char *__argz, size_t __argz_len, __const char *__entry) if (__entry < __argz + __argz_len) __entry = strchr (__entry, '\0') + 1; - return __entry >= __argz + __argz_len ? NULL : (char *) __entry; + return __entry >= __argz + __argz_len ? (char *) NULL : (char *) __entry; } else return __argz_len > 0 ? __argz : 0; diff --git a/sysdeps/i386/i486/bits/string.h b/sysdeps/i386/i486/bits/string.h index 5e4abbc3e5..10915ced1d 100644 --- a/sysdeps/i386/i486/bits/string.h +++ b/sysdeps/i386/i486/bits/string.h @@ -471,7 +471,7 @@ __strcpy_g (char *__dest, __const char *__src) case 2: \ *((__uint16_t *) __cp) = \ __STRING_SMALL_GET16 (src, 0); \ - ++cp; \ + ++__cp; \ break; \ case 3: \ *((__uint16_t *) __cp)++ = \ @@ -481,7 +481,7 @@ __strcpy_g (char *__dest, __const char *__src) case 4: \ *((__uint32_t *) __cp) = \ __STRING_SMALL_GET32 (src, 0); \ - cp += 3; \ + __cp += 3; \ break; \ case 5: \ *((__uint32_t *) __cp)++ = \ @@ -493,7 +493,7 @@ __strcpy_g (char *__dest, __const char *__src) __STRING_SMALL_GET32 (src, 0); \ *((__uint16_t *) __cp) = \ __STRING_SMALL_GET16 (src, 4); \ - ++cp; \ + ++__cp; \ break; \ case 7: \ *((__uint32_t *) __cp)++ = \ @@ -507,7 +507,7 @@ __strcpy_g (char *__dest, __const char *__src) __STRING_SMALL_GET32 (src, 0); \ *((__uint32_t *) __cp) = \ __STRING_SMALL_GET32 (src, 4); \ - cp += 3; \ + __cp += 3; \ break; \ } \ __cp; })) diff --git a/sysdeps/i386/init-first.c b/sysdeps/i386/init-first.c index 47dd299e18..118f84201f 100644 --- a/sysdeps/i386/init-first.c +++ b/sysdeps/i386/init-first.c @@ -1,6 +1,6 @@ /* Initialization code run first thing by the ELF startup code. For i386/Unix. - Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. - This file is part of the GNU C Library. + Copyright (C) 1995, 1996, 1997 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 @@ -20,7 +20,7 @@ #include <unistd.h> extern void __libc_init (int, char **, char **); -extern void __getopt_clean_environment (void); +extern void __getopt_clean_environment (char **); extern void __libc_global_ctors (void); int __libc_multiple_libcs = 1; @@ -36,7 +36,7 @@ init (int *data) __libc_init (argc, argv, envp); /* This is a hack to make the special getopt in GNU libc working. */ - __getopt_clean_environment (); + __getopt_clean_environment (envp); } #ifdef PIC diff --git a/sysdeps/mach/hurd/i386/init-first.c b/sysdeps/mach/hurd/i386/init-first.c index 4c4f6ff665..10094f0967 100644 --- a/sysdeps/mach/hurd/i386/init-first.c +++ b/sysdeps/mach/hurd/i386/init-first.c @@ -27,7 +27,7 @@ extern void __mach_init (void); extern void __libc_init (int, char **, char **); -extern void __getopt_clean_environment (void); +extern void __getopt_clean_environment (char **); extern void __libc_global_ctors (void); unsigned int __hurd_threadvar_max; @@ -109,7 +109,7 @@ init1 (int argc, char *arg0, ...) __libc_init (argc, argv, __environ); /* This is a hack to make the special getopt in GNU libc working. */ - __getopt_clean_environment (); + __getopt_clean_environment (envp); #ifdef PIC __libc_global_ctors (); @@ -170,7 +170,7 @@ init (int *data) /* Force NEWSP into %ecx and &init1 into %eax, which are not restored by function return. */ asm volatile ("# a %0 c %1" : : "a" (newsp), "c" (&init1)); - } + } else { /* The argument data is just above the stack frame we will unwind by @@ -202,7 +202,7 @@ init (int *data) init1's return address, and then jump there. */ asm volatile ("pushl %eax; jmp *%ecx"); /* NOTREACHED */ -} +} #ifdef PIC @@ -223,7 +223,7 @@ _init (int argc, ...) __mach_init (); RUN_HOOK (_hurd_preinit_hook, ()); - + init (&argc); } #endif @@ -256,7 +256,7 @@ __libc_init_first (int argc __attribute__ ((unused)), ...) __mach_init (); RUN_HOOK (_hurd_preinit_hook, ()); - + _hurd_startup ((void **) &argc, &doinit); #endif } @@ -267,8 +267,8 @@ __libc_init_first (int argc __attribute__ ((unused)), ...) in ld.so causes disaster, because the _init definition above will cause ld.so to gain an init function, which is not a cool thing. */ -void -_dl_start (void) -{ - abort (); +void +_dl_start (void) +{ + abort (); } diff --git a/sysdeps/mach/hurd/mips/init-first.c b/sysdeps/mach/hurd/mips/init-first.c index b057aeb097..a411a1b0e9 100644 --- a/sysdeps/mach/hurd/mips/init-first.c +++ b/sysdeps/mach/hurd/mips/init-first.c @@ -27,7 +27,7 @@ extern void __mach_init (void); extern void __libc_init (int, char **, char **); -extern void __getopt_clean_environment (void); +extern void __getopt_clean_environment (char **); extern void __libc_global_ctors (void); unsigned int __hurd_threadvar_max; @@ -110,7 +110,7 @@ init1 (int argc, char *arg0, ...) __libc_init (argc, argv, __environ); /* This is a hack to make the special getopt in GNU libc working. */ - __getopt_clean_environment (); + __getopt_clean_environment (envp); #ifdef PIC __libc_global_ctors (); @@ -169,14 +169,14 @@ __init (int *data) be the return address for `init1'; we will jump there with NEWSP as the stack pointer. */ return newsp; - } + } /* The argument data is just above the stack frame we will unwind by returning. */ return (void *) data; (void) &__init; -} +} #ifdef PIC /* This function is called to initialize the shared C library. @@ -399,7 +399,7 @@ ___libc_init_first (int return_addr, int argc, ...) #endif RUN_HOOK (_hurd_preinit_hook, ()); - + _hurd_startup ((void **) &argc, &doinit); (void) &___libc_init_first; diff --git a/sysdeps/sparc/sparc32/dl-machine.h b/sysdeps/sparc/sparc32/dl-machine.h index 39bcab7df5..b80c126487 100644 --- a/sysdeps/sparc/sparc32/dl-machine.h +++ b/sysdeps/sparc/sparc32/dl-machine.h @@ -308,10 +308,10 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, /* For thread safety, write the instructions from the bottom and flush before we overwrite the critical "b,a". */ reloc_addr[2] = OPCODE_JMP_G1 | (value & 0x3ff); - if (1 || (_dl_hwcap & 1)) /* HWCAP_SPARC_FLUSH */ + if (_dl_hwcap & HWCAP_SPARC_FLUSH) __asm __volatile ("flush %0+8" : : "r"(reloc_addr)); reloc_addr[1] = OPCODE_SETHI_G1 | (value >> 10); - if (1 || (_dl_hwcap & 1)) /* HWCAP_SPARC_FLUSH */ + if (_dl_hwcap & HWCAP_SPARC_FLUSH) __asm __volatile ("flush %0+4" : : "r"(reloc_addr)); break; case R_SPARC_8: diff --git a/sysdeps/stub/init-first.c b/sysdeps/stub/init-first.c index 4fcc67ddbe..dacefdcb63 100644 --- a/sysdeps/stub/init-first.c +++ b/sysdeps/stub/init-first.c @@ -23,7 +23,7 @@ int __libc_multiple_libcs = 1; extern void __libc_init (int, char **, char **); -extern void __getopt_clean_environment (void); +extern void __getopt_clean_environment (char **); pid_t __libc_pid; @@ -51,5 +51,5 @@ void __libc_init_first __libc_init (argc, argv, envp); /* This is a hack to make the special getopt in GNU libc working. */ - __getopt_clean_environment (); + __getopt_clean_environment (envp); } diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h b/sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h index 9a4666a508..462f7c2998 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h @@ -51,7 +51,7 @@ typedef __u_int __nlink_t; /* Type of file link counts. */ typedef long int __off_t; /* Type of file sizes and offsets. */ typedef __quad_t __loff_t; /* Type of file sizes and offsets. */ typedef int __pid_t; /* Type of process identifications. */ -typedef long int __ssize_t; /* Type of a byte count, or error. */ +typedef long long int __ssize_t; /* Type of a byte count, or error. */ typedef struct { |