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authorUlrich Drepper <drepper@redhat.com>1997-10-26 20:13:00 +0000
committerUlrich Drepper <drepper@redhat.com>1997-10-26 20:13:00 +0000
commitaf6f39063b4433ee73647159200d105994d75b49 (patch)
tree9775bb32db5cffc9ab0fba29a6c11d853cbcd943 /login
parentf2ea0f5b0d6ff2bbf261a5fd3d61f967e36f22e6 (diff)
downloadglibc-af6f39063b4433ee73647159200d105994d75b49.tar.gz
1997-10-26 18:12 Ulrich Drepper <drepper@cygnus.com> * libio/genops.c: Partial undo of last patch. * libio/stdfiles.c: Likewise. * libio/iofdopen.c: Use _IO_FILE_complete, not _IO_file_plus. * libio/iopopen.c: Likewise. * libio/iovdprintf.c: Likewise. * libio/libio.h: Remove duplicated `;'. * libio/stdio.c: Remove misleading comment. * libio/stdio.h: Declare standard streams as variables. * login/Makefile (distribute): Add README.utmpd. * login/README.utmpd: New file. Provided by Mark M. Kettenis <kettenis@phys.uva.nl>. * manual/job.texi: Document tcgetsid. * manual/pattern.texi: Document globfree. * manual/terminal.texi: Document B38400 ... B460800. * posix/confstr.c: Print "-D_FILE_OFFSET_SIZE=64" for _CS_LFS_CFLAGS. * posix/unistd.h: Add explanation of _POSIX_* constants. * posix/unists.h: Add prototypes for __pread, __pread64, __pwrite and __pwrite64. * sysdeps/generic/pread.c: Define as __pread and make pread weak alias. * sysdeps/generic/pread64.c: Likewise. * sysdeps/generic/pwrite.c: Likewise. * sysdeps/generic/pwrite64.c: Likewise. * sysdeps/posix/pread.c: Likewise. * sysdeps/posix/pwrite.c: Likewise. * sysdeps/posix/pread64.c: New file. * sysdeps/posix/pwrite64.c: Likewise. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=posix] (sysdep_routines): Add s_pread64 and s_pwrite64. * sysdeps/unix/sysv/linux/pread.c: New file. * sysdeps/unix/sysv/linux/pread64.c: New file. * sysdeps/unix/sysv/linux/pwrite.c: New file. * sysdeps/unix/sysv/linux/pwrite64.c: New file. * sysdeps/unix/sysv/linux/s_pread64.c: New file. * sysdeps/unix/sysv/linux/s_pwrite64.c: New file. * sysdeps/unix/sysv/linux/syscalls.list: Add pread and pwrite. * sysdeps/unix/sysv/linux/alpha/pread64.c: New (empty) file. * sysdeps/unix/sysv/linux/alpha/pwrite64.c: New (empty) file. * sysdeps/unix/sysv/linux/sparc/sparc64/pread64.c: New (empty) file. * sysdeps/unix/sysv/linux/sparc/sparc64/pwrite64.c: New (empty) file. * sysdeps/unix/sysv/linux/alpha/syscalls.list: Add pread and pwrite with weak aliases for *64 functions. * sysdeps/unix/sysv/linux/sparc/sparc64/syscalls.list: Likewise. * string/bits/string2.h: Add casts to allow void * arguments. * sysdeps/i386/i486/bits/string.h: Define index and rindex only if __USE_BSD or __USE_XOPEN_EXTENDED. * sysdeps/unix/sysv/linux/bits/socket.h: Add SCM_RIGHTS and other SCM_* constants from kernel header. * termios/termios.h: Add prototype for tcgetsid. 1997-10-26 13:26 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * sunrpc/clnt_perr.c: Add trailing '\0' to strings. * sunrpc/get_myaddr.c: Include rpc/clnt.h for prototypes. * sunrpc/pmap_clnt.c: Use get_myaddress from header file. 1997-10-26 05:26 Ulrich Drepper <drepper@cygnus.com> * configure.in: Punt if any directory mentioned in the enable-add-on parameter does not exist. 1997-10-25 19:25 Ulrich Drepper <drepper@cygnus.com> * termios/Makefile (routines): Add tcgetsid. * termios/tcgetsid.c: New file. Provided by Mark M. Kettenis <kettenis@phys.uva.nl>. 1997-10-25 18:56 Ulrich Drepper <drepper@cygnus.com> * stdlib/stdlib.h: Remove mblen optimization. * stdlib/mblen.c: Rewrite to make sure global state is not changed. Reported by anderson@metrolink.com. 1997-10-19 21:51 Wolfram Gloger <wg@wolfram.dent.med.uni-muenchen.de> * malloc/thread-m.h [_LIBC]: Use new __libc_internal_tsd_{set,get} interface for thread-specific data. 1997-10-25 06:51 Ulrich Drepper <drepper@cygnus.com> * elf/dl-addr.c: Use braces for correct logical grouping. Patch by Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>. 1997-10-18 09:15 Geoff Keating <geoffk@ozemail.com.au> * io/ftwtest-sh: Sometimes /tmp is a symlink to somewhere more convenient; that caused this test to break. * sysdeps/powerpc/dl-machine.h: Fix typo. * sysdeps/powerpc/bits/fenv.h: Don't use floating-point registers when -msoft-float is in effect, because this causes compilation to stop. * sysdeps/powerpc/bits/mathinlines.h: Likewise. * rpm/template: Add description, use RPM flags rather than the ones used to build the spec. Build in a temporary directory, not /. * elf/dl-lookup.c: Don't include _itoa.h, it's not used. * elf/dl-minimal.c: Use _itoa_word rather than _itoa. It seems that _itoa is the only routine that ld.so uses that requires something from libgcc.a on powerpc, so it would be best to avoid it in ld.so. * elf/rtld.c: Likewise. * sysdeps/generic/_strerror.c: Likewise. * stdio-common/_itoa.c: Split out digits strings. * stdio-common/itoa-digits.c: New file. * stdio-common/Makefile: Add itoa-digits. 1997-10-21 Andreas Jaeger <aj@arthur.rhein-neckar.de> * manual/filesys.texi (Scanning Directory Content): Document error case more. * dirent/scandir.c (scandir): Ignore errors from select function. Suggested by urbanw@cs.umu.se (closes PR libc/316). 1997-10-25 06:18 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/sparc/sparc32/socket.S: Corrections. Patch by Erik Troan <ewt@redhat.com>. 1997-10-25 04:00 Ulrich Drepper <drepper@cygnus.com> * sysdeps/generic/dl-cache.c (_dl_load_cache_lookup): Favour exact matching of version function if both the general (1) and glibc-specific (3) entry are present. 1997-10-22 18:47 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * sunrpc/rpc/clnt.h: Add get_myaddress prototype. * nis/libnsl.map: Fix typo. * nis/nis_call.c: Fix memory leak. 1997-10-22 19:29 Ulrich Drepper <drepper@cygnus.com> * sysdeps/generic/memcmp.c: Define __P if not defined before. Patch by Jim Meyering <meyering@eng.ascend.com>. 1997-10-21 22:09 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/sys/prctl.h: New file by Richard Gooch <rgooch@atnf.csiro.au>. 1997-10-21 21:50 Ulrich Drepper <drepper@cygnus.com> * misc/syslog.c (vsyslog): Open console with O_NOCTTY. Patch by Zack Weinberg <zack@rabi.phys.columbia.edu>. 1997-10-21 18:07 Ulrich Drepper <drepper@cygnus.com> * posix/wordexp.c: Improve handling of $... expressions. Patch by Tim Waugh <tim@cyberelk.demon.co.uk>. 1997-10-21 16:12 Ulrich Drepper <drepper@cygnus.com> * manual/string.texi: Correct return values of bcopy and bzero. Patch by Matthew Wilcox <willy@odie.barnet.ac.uk>. 1997-10-18 15:03 Philip Blundell <Philip.Blundell@pobox.com> * sysdeps/unix/sysv/linux/bits/socket.h: Correct types of some elements in struct msghdr and struct cmsghdr, to keep in step with the kernel. 1997-10-17 22:29 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/sparc/sparc32/init-first.h: Fix another bug in startup code. Patch by Eric Delaunay <delaunay@lix.polytechnique.fr>. 1997-10-16 20:17 Richard Henderson <rth@cygnus.com> * sysdeps/unix/sysv/linux/sparc/sparc32/socket.S: Dump args to the stack and give the kernel a pointer. Use the sysdep.h macros. 1997-10-17 04:07 Ulrich Drepper <drepper@cygnus.com> * sysdeps/sparc/sparc32/elf/start.S: Calculate argv correctly. Patch by Eric Delaunay <delaunay@lix.polytechnique.fr>. 1997-10-16 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/libm-ieee754/s_nextafterxf.c [!__STDC__]: Correct typo. 1997-10-16 14:50 Ulrich Drepper <drepper@cygnus.com> * manual/pattern.texi: Document globfree. 1997-10-15 21:11 Philip Blundell <Philip.Blundell@pobox.com> * sysdeps/unix/sysv/linux/net/if_packet.h: New file. * sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add net/if_packet.h. * sysdeps/unix/sysv/linux/net/if_arp.h (ARPHRD_ASH): New type, for 64Mbps ASH. (ARPHRD_ETHER): This is used for 100Mbps networks too. 1997-10-15 Andreas Jaeger <aj@arthur.rhein-neckar.de> * Makerules (install): Use full pathnames for linker script. This is to work around a limitation in `ld' while no better solution is possible. 1997-10-15 Andreas Jaeger <aj@arthur.rhein-neckar.de> * malloc/malloc.c (mmap_chunk): Put inline before static in function definition to avoid compiler warning. (malloc_extend): Likewise. * sysdeps/generic/des_impl.c: Include "des.h" to avoid warning. 1997-10-15 Andreas Jaeger <aj@arthur.rhein-neckar.de> * NEWS: Fix @gnu.ai.mit.edu -> @gnu.org. * README.template: Likewise. * db/makedb.c: Likewise. * elf/ldd.bash.in: Likewise. * elf/ldd.sh.in: Likewise. * intl/locale.alias: Likewise. * login/programs/utmpd.c: Likewise. * libio/stdfiles.c [!_IO_MTSAFE] (DEF_STDFILE): Fix parameter list. 1997-10-14 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Rules: Remove all empty.* files. (shared-only-routines): Correct implementation. 1997-10-14 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/libm-ieee754/s_lrintl.c: Make compilable. * sysdeps/libm-ieee754/s_llrintl.c: Likewise. Optimized. 1997-10-14 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/ldd.bash.in: Only prepend ./ if the file contains no slash at all. * elf/ldd.sh.in: Likewise. 1997-10-14 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/sys/ucontext.h: New file. 1997-10-13 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/m68k/fpu/s_scalbln.c: New (empty) file. * sysdeps/m68k/fpu/s_scalblnf.c: New (empty) file. * sysdeps/m68k/fpu/s_scalblnl.c: New (empty) file. * sysdeps/m68k/fpu/s_scalbn.c: Add scalbln alias. * sysdeps/m68k/fpu/s_scalbnf.c: Adapted. * sysdeps/m68k/fpu/s_scalbnl.c: Adapted. * sysdeps/m68k/fpu/s_lrint.c: Add standard skeleton stuff. * sysdeps/m68k/fpu/s_lrintf.c: New file. * sysdeps/m68k/fpu/s_lrintl.c: New file. * sysdeps/m68k/fpu/bits/mathinline.h: Add fma and scalbln. Update lrint and scalbn. (__m81_inline) [__cplusplus]: Define to __inline. * math/bits/mathcalls.h: Remove whitespace before second argument of __MATHDECL. Add note explaining this. 1997-10-13 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * manual/arith.texi (Absolute Value): Spelling fix. 1997-10-13 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * malloc/obstack.h (obstack_empty_p) [!__GNUC__]: Properly parenthesize the macro parameter. * Rules: Remove rules to magically install <subdir>.h headers.
Diffstat (limited to 'login')
-rw-r--r--login/Makefile2
-rw-r--r--login/README.utmpd174
-rw-r--r--login/programs/utmpd.c6
3 files changed, 178 insertions, 4 deletions
diff --git a/login/Makefile b/login/Makefile
index 407330707b..3842b2f4af 100644
--- a/login/Makefile
+++ b/login/Makefile
@@ -32,7 +32,7 @@ install-sbin = utmpd
utmpd-routines := connection database error request xtmp
extra-objs := $(utmpd-routines:=.o)
-distribute := utmp-private.h programs/xtmp.h programs/utmpd.h \
+distribute := utmp-private.h programs/xtmp.h programs/utmpd.h README.utmpd \
programs/utmpd-private.h $(utmpd-routines:%=programs/%.c)
subdir-dirs = programs
diff --git a/login/README.utmpd b/login/README.utmpd
new file mode 100644
index 0000000000..d70b3d8de2
--- /dev/null
+++ b/login/README.utmpd
@@ -0,0 +1,174 @@
+With the introduction of version 2 of the GNU C Library the format of
+the UTMP and WTMP files changed for some configurations (see Q&A 10 of
+the FAQ). This version of the GNU C Library contains a solution for
+the problems this may cause, by providing an UTMP daemon `utmpd'.
+
+Do I need it?
+=============
+
+If your configuration is one of the following:
+
+ i[3456]86-*-linux-gnu Linux-2.0 on Intel
+ m68k-*-linux-gnu Linux-2.0 on Motorola 680x0
+
+you might need it, so please read on. If it is not, please read the
+section titled `Programming' at the end of this text.
+
+In principle, you only need the daemon if you want to keep using old
+programs linked against the previous version of the Linux C Library
+(libc5). In addition you will need the daemon if you are running
+Linux on Intel, and you are planning to use iBCS (Intel Binary
+Compatibility Standard). If you have no libc5 programs left on your
+system and you are not using iBCS, it is probably better not to
+install the daemon since it uses (a small amount of) memory and CPU
+time. But apart from that it shouldn't hurt to install `utmpd', so
+when in doubt install it anyway.
+
+
+Installation
+============
+
+The installation process (`make install') already places the `utmpd'
+binary in $(sbindir). The only thing you have to do is modifying your
+startup scripts to start the daemon. Unfortunately this is a bit of a
+hassle, since the layout of these scripts is not standardized. You
+should try to find the command that creates the file `/var/run/utmp'.
+This is usually done in a script named `/etc/rc', `/etc/init.d/boot'
+(Debian) or `/etc/rc.d/rc.S' (Slackware). You could try:
+
+ grep utmp /etc/* /etc/init.d/* /etc/rc.d/*
+
+to find the right script. The creation of `/var/run/utmp' is usually
+done with a command like:
+
+ : > /var/run/utmp
+
+or
+
+ cat /dev/null > /var/run/utmp
+
+Now add a line before this command to create the file `/var/run/utmpx'
+e.g.
+
+ : > /var/run/utmpx
+
+or
+
+ cat /dev/null > /var/run/utmpx
+
+whatever you prefer, and after this command, add a line to start the
+daemon
+
+ utmpd
+
+The entire fragment could look something like
+
+ # Clean up /var/run and create /var/run/utmp so that we can login.
+ ( cd /var/run && find . ! -type d -exec rm -f -- {} \; )
+ : > /var/run/utmpx
+ : > /var/run/utmp
+ utmpd
+
+If the file `/var/log/wtmp' exists on your system, you will probably
+want to create the file `/var/log/wtmpx'. Programs linked against the
+GNU C Library will now write to `/var/log/wtmpx', while programs
+linked against the old library will continue to write to
+`/var/log/wtmp'. Of course this means that the information gets
+spread over two files. We hope to provide a better solution in the
+future.
+
+After a reboot, user accounting should be working again. If not,
+please refer to the section titled `Troubleshooting' below before
+submitting a bug report.
+
+
+What is `utmpd' doing?
+======================
+
+After installation there will be two files that store the user
+accounting information: `/var/run/utmp' and `/var/run/utmpx'. The
+file `/var/run/utmp' will be in the old format so libc5 programs will
+continue to work (even if they are broken and do not use the library
+functions to access the user accounting database). And on Intel, you
+can safely link `/var/run/utmp' to `/etc/utmp' for iBCS programs.
+Programs linked against the new GNU C Library (glibc2) will contact
+the daemon for all user accounting database access. The daemon will
+store its information in `/var/run/utmpx' and keeps this file in sync
+with `/var/run/utmp'. Entries added to `/var/run/utmpx' will be
+converted to the old format and will be added to `/var/run/utmp' and
+vice versa. This way both libc5 and glibc2 see the same information
+in the same fields of `struct utmp'. Of course libc5 programs see only
+part of the information that glibc2 programs see because not all
+members of the glibc2 `struct utmp' are present in the libc5 `struct
+utmp'. For the same reason libc5 will see a truncated version of
+those fields where the length of the glibc2 field is larger than the
+corresponding libc5 field (ut_user, ut_line, ut_host).
+
+
+Troubleshooting
+===============
+
+If user accounting is not working on your system, e.g. programs like
+`who' or `logname' return rubbish, or you cannot login, make
+sure that:
+
+* The file `/var/run/utmpx' exists.
+
+* The file `/var/log/wtmpx' exists.
+
+* No program linked against the GNU C Library (libc6) is accessing
+ `/var/run/utmp' directly (see the section on `Programming' below).
+
+If that does not solve your problems, please use the `glibcbug' script
+to report the problem to <bugs@gnu.org>.
+
+The `utmpd' daemon uses `syslogd' to report problems. It uses the
+`daemon' facility and `warning' and `error' levels. Alternatively you
+could use the following option to ease debugging:
+
+`--debug'
+ Use this option if you want the daemon to output its warnings and
+ error messages to the terminal instead of sending them to the
+ system logger (`syslogd'). When using this option the daemon does
+ not auto-background itself.
+
+To use this option you should first kill the daemon that is already
+running, and start a fresh one with the desired option:
+
+ kill `cat /var/run/utmpd.pid`
+ utmpd --debug
+
+Please include any warnings or error messages from `utmpd' in your
+bug reports.
+
+
+Programming
+===========
+
+In order for the `utmpd' approach to work it is essential that NO
+program EVER accesses the UTMP and WTMP files directly. Instead, a
+program should use ONLY the available library functions:
+
+ * utmpname() Select the database used (UTMP, WTMP, ...).
+ * setutent() Open the database.
+ * getutent() Read the next entry from the database.
+ * getutid() Search for the next entry with a specific ID.
+ * getutline() Search for the next entry for a specific line.
+ * pututline() Write an entry to the database.
+ * endutent() Close the database.
+ * updwtmp() Add an entry to a database (WTMP, ...).
+
+For details, please refer to `The GNU C Library Reference Manual',
+which also contains information about some additional functions
+derived from BSD and XPG that may be of interest. The command
+
+ info libc "User Accounting Database"
+
+should point you at the right location.
+
+If you encounter a program that reads from or, even worse, writes to
+the UTMP and WTMP files directly, please report this as a bug to the
+author of that program. Note that the files referred to by the macros
+`_PATH_UTMP' and `_PATH_WTMP' might even disappear in the future, so
+please do not use these, except in a call to `utmpname()' or
+`updwtmp()', not even to check their existence.
diff --git a/login/programs/utmpd.c b/login/programs/utmpd.c
index e0648ebb42..c2e9fe0a8b 100644
--- a/login/programs/utmpd.c
+++ b/login/programs/utmpd.c
@@ -144,7 +144,7 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
/* Cleanup files created by a previous `bind'. */
unlink (_PATH_UTMPD_RO);
unlink (_PATH_UTMPD_RW);
-
+
/* Open UTMP database. */
utmp_db = open_database (_PATH_UTMP "x", _PATH_UTMP);
if (utmp_db == NULL)
@@ -205,7 +205,7 @@ Usage: %s [OPTION]...\n\
-V, --version output version information and exit\n"),
program_invocation_name);
fputs (_("\
-Report bugs using the `glibcbug' script to <bugs@gnu.ai.mit.edu>.\n"),
+Report bugs using the `glibcbug' script to <bugs@gnu.org>.\n"),
stdout);
}
@@ -252,7 +252,7 @@ make_socket (const char *name)
size = (offsetof (struct sockaddr_un, sun_path)
+ strlen (addr.sun_path));
-
+
if (bind (sock, (struct sockaddr *) &addr, size) < 0)
error (EXIT_FAILURE, errno, "%s", name);