diff options
| author | Ulrich Drepper <drepper@redhat.com> | 2000-04-18 18:38:50 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2000-04-18 18:38:50 +0000 |
| commit | 74f998221da8e1719ac95add005110676ebad6f2 (patch) | |
| tree | b1f20e33d9434f31470184d0888ed820dfd3b36d | |
| parent | d9317f3d9285a88347386e7a4505dad7329c1cee (diff) | |
| download | glibc-74f998221da8e1719ac95add005110676ebad6f2.tar.xz glibc-74f998221da8e1719ac95add005110676ebad6f2.zip | |
Update.
2000-04-18 Ulrich Drepper <drepper@redhat.com>
* login/programs/connection.c: Removed.
* login/programs/database.c Removed.
* login/programs/error.c: Removed.
* login/programs/request.c: Removed.
* login/programs/xtmp.c: Removed.
* login/programs/xtmp.h: Removed.
* login/Makefile: Remove rules for utmpd.
* login/README.utmpd: Removed.
| -rw-r--r-- | ChangeLog | 11 | ||||
| -rw-r--r-- | login/README.utmpd | 175 | ||||
| -rw-r--r-- | login/programs/connection.c | 180 | ||||
| -rw-r--r-- | login/programs/database.c | 543 | ||||
| -rw-r--r-- | login/programs/error.c | 104 | ||||
| -rw-r--r-- | login/programs/request.c | 646 | ||||
| -rw-r--r-- | login/programs/xtmp.c | 121 | ||||
| -rw-r--r-- | login/programs/xtmp.h | 55 |
8 files changed, 11 insertions, 1824 deletions
@@ -1,3 +1,14 @@ +2000-04-18 Ulrich Drepper <drepper@redhat.com> + + * login/programs/connection.c: Removed. + * login/programs/database.c Removed. + * login/programs/error.c: Removed. + * login/programs/request.c: Removed. + * login/programs/xtmp.c: Removed. + * login/programs/xtmp.h: Removed. + * login/Makefile: Remove rules for utmpd. + * login/README.utmpd: Removed. + 2000-04-18 Andreas Jaeger <aj@suse.de> * sysdeps/mips/dl-machine.h (elf_machine_rel): Fix relocation. diff --git a/login/README.utmpd b/login/README.utmpd deleted file mode 100644 index b691c36f27..0000000000 --- a/login/README.utmpd +++ /dev/null @@ -1,175 +0,0 @@ -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 `Why -does getlogin() always return NULL on my Linux box?' 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/connection.c b/login/programs/connection.c deleted file mode 100644 index 4e1663189d..0000000000 --- a/login/programs/connection.c +++ /dev/null @@ -1,180 +0,0 @@ -/* Copyright (C) 1997 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/socket.h> -#include <unistd.h> - -#include "utmpd-private.h" - - -/* Prototypes for the local functions. */ -static client_connection *alloc_connection (void); -static void free_connection (client_connection *connection); -static int set_nonblock_flag (int desc, int value); - - -/* The head of the connection list. */ -static client_connection *connection_list = NULL; - - -/* Accept connection on SOCK, with access permissions given by ACCESS. - Returns a pointer to a newly allocated client_connection if - successful, NULL if not. */ -client_connection * -accept_connection (int sock, int access) -{ - client_connection *connection; - - connection = alloc_connection (); - if (connection == NULL) - return NULL; - - connection->sock = accept (sock, NULL, NULL); - connection->access = access; - if (connection->sock < 0) - { - free_connection (connection); - return NULL; - } - - if (set_nonblock_flag (connection->sock, 1) < 0) - { - close_connection (connection); - return NULL; - } - - return connection; -} - - -/* Close CONNECTION. */ -void -close_connection (client_connection *connection) -{ - close (connection->sock); - free_connection (connection); -} - - -/* Return the connection for SOCK. */ -client_connection * -find_connection (int sock) -{ - client_connection *connection; - - for (connection = connection_list; connection; - connection = connection->next) - { - if (connection->sock == sock) - return connection; - } - - return NULL; -} - - -static client_connection * -alloc_connection (void) -{ - client_connection *connection; - size_t read_bufsize = 1024; - size_t write_bufsize = 1024; - - connection = (client_connection *)malloc (sizeof (client_connection)); - if (connection == NULL) - return NULL; - - memset (connection, 0, sizeof (client_connection)); - - /* Allocate read buffer. */ - connection->read_base = malloc (read_bufsize); - connection->read_ptr = connection->read_base; - connection->read_end = connection->read_base + read_bufsize; - if (connection->read_base == NULL) - { - free (connection); - return NULL; - } - - /* Allocate write buffer. */ - connection->write_base = malloc (write_bufsize); - connection->write_ptr = connection->write_base; - connection->write_end = connection->write_base + write_bufsize; - if (connection->write_base == NULL) - { - free (connection->read_base); - free (connection); - return NULL; - } - - /* Link connection. */ - connection->next = connection_list; - connection_list = connection; - if (connection->next) - connection->next->prev = connection; - - return connection; -} - - -static void -free_connection (client_connection *connection) -{ - /* Unlink connection. */ - if (connection->next) - connection->next->prev = connection->prev; - if (connection->prev) - connection->prev->next = connection->next; - - /* Take care of the head of the list. */ - if (connection == connection_list) - connection_list = connection->next; - - /* Free buffers. */ - if (connection->read_base) - free (connection->read_base); - if (connection->write_base) - free (connection->write_base); - - free (connection); -} - - -/* Set the `O_NONBLOCK' flag of DESC if VALUE is nonzero, - or clear the flag if VALUE is 0. - Return 0 on success, or -1 on error with `errno' set. */ -static int -set_nonblock_flag (int desc, int value) -{ - int oldflags = fcntl (desc, F_GETFL, 0); - /* If reading the flags failed, return error indication now. */ - if (oldflags == -1) - return -1; - /* Set just the flag we want to set. */ - if (value != 0) - oldflags |= O_NONBLOCK; - else - oldflags &= ~O_NONBLOCK; - /* Store modified flag word in the descriptor. */ - return fcntl (desc, F_SETFL, oldflags); -} diff --git a/login/programs/database.c b/login/programs/database.c deleted file mode 100644 index 4267c11186..0000000000 --- a/login/programs/database.c +++ /dev/null @@ -1,543 +0,0 @@ -/* Copyright (C) 1997 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <assert.h> -#include <errno.h> -#include <fcntl.h> -#include <string.h> -#include <stdlib.h> -#include <sys/stat.h> -#include <time.h> -#include <unistd.h> -#include <utmp.h> -#include <libintl.h> - - -#include "utmpd-private.h" -#include "xtmp.h" - - -/* Prototypes for the local functions. */ -static int initialize_database (utmp_database *database); -static int store_state_entry (utmp_database *database, int old_position, - const struct utmp *old_entry); -static int store_process_entry (utmp_database *database, int old_position, - const struct utmp *old_entry); -static int replace_entry (utmp_database *database, int old_position, - int new_position, const struct utmp *entry); -static int store_entry (utmp_database *database, int position, - const struct utmp *entry); -static int get_mtime (int filedes, time_t *timer); - - -/* Open the database specified by FILE and merge it with the contents - of the old format file specified by OLD_FILE. Returns a pointer to - a newly allocated structure describing the database, or NULL on - error. */ -utmp_database * -open_database (const char *file, const char *old_file) -{ - mode_t mode = S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH; - utmp_database *database; - - /* Allocate memory. */ - database = (utmp_database *) malloc (sizeof (utmp_database)); - if (database == NULL) - { - error (0, 0, _("memory exhausted")); - return NULL; - } - - memset (database, 0, sizeof (utmp_database)); - - /* Open database, create it if it doesn't exist already. */ - database->fd = open (file, O_RDWR | O_CREAT, mode); - if (database->fd < 0) - { - error (0, errno, "%s", file); - goto return_error; - } - - database->file = strdup (file); - if (database->file == NULL) - { - error (0, 0, _("memory exhausted")); - goto return_error; - } - - if (old_file) - { - database->old_fd = open (old_file, O_RDWR|O_CREAT, mode); - if (database->old_fd < 0) - { - error (0, errno, "%s", old_file); - goto return_error; - } - - database->old_file = strdup (old_file); - if (database->old_file == NULL) - { - error (0, 0, _("memory exhausted")); - goto return_error; - } - } - - /* Initialize database. */ - if (initialize_database (database) < 0) - goto return_error; - - return database; - -return_error: - close_database (database); - - return NULL; -} - -/* Synchronize DATABASE. */ -int -synchronize_database (utmp_database *database) -{ - assert (database); - - /* Check if there is a file in the old format, that we have to - synchronize with. */ - if (database->old_file) - { - time_t curtime; - time_t mtime; - - curtime = time (NULL); - - if (get_mtime (database->old_fd, &mtime) < 0) - { - error (0, errno, _("%s: cannot get modification time"), - database->old_file); - return -1; - } - - if (mtime >= database->mtime) - { - int position = 0; - struct utmp entry; - struct utmp old_entry; - - while (1) - { - if (read_old_entry (database, position, &old_entry) < 0) - break; - - if (read_entry (database, position, &entry) < 0 - || !compare_entry (&old_entry, &entry)) - { - if (write_entry (database, position, &old_entry) < 0) - { - error (0, errno, "%s", database->file); - return -1; - } - } - - position++; - } - - database->mtime = curtime; - } - - } - - return 0; -} - - -/* Close DATABASE. */ -void -close_database (utmp_database *database) -{ - assert (database); - - if (database->fd >= 0) - close (database->fd); - - if (database->old_fd >= 0) - close (database->old_fd); - - /* Free allocated memory. */ - if (database->file) - free (database->file); - if (database->old_file) - free (database->old_file); - free (database); -} - - -/* Read the entry at POSITION in DATABASE and store the result in - ENTRY. Returns 0 if successful, -1 if not. */ -int -read_entry (utmp_database *database, int position, struct utmp *entry) -{ - ssize_t nbytes; - off_t offset; - - offset = position * sizeof (struct utmp); - if (lseek (database->fd, offset, SEEK_SET) < 0) - return -1; - - nbytes = read (database->fd, entry, sizeof (struct utmp)); - if (nbytes != sizeof (struct utmp)) - return -1; - - return 0; -} - - -/* Write ENTRY at POSITION in DATABASE. Returns 0 if successful, -1 - on error. */ -int -write_entry (utmp_database *database, int position, - const struct utmp *entry) -{ - int result = -1; - struct flock fl; - ssize_t nbytes; - off_t offset; - - /* Try to lock the file. */ - memset (&fl, 0, sizeof (struct flock)); - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fcntl (database->fd, F_SETLKW, &fl); - - offset = position * sizeof (struct utmp); - if (lseek (database->fd, offset, SEEK_SET) < 0) - goto fail; - - nbytes = write (database->fd, entry, sizeof (struct utmp)); - if (nbytes != sizeof (struct utmp)) - { - ftruncate (database->fd, offset); - goto fail; - } - - result = 0; - -fail: - /* And unlock the file. */ - fl.l_type = F_UNLCK; - fcntl (database->fd, F_SETLKW, &fl); - - return result; -} - - -/* Append ENTRY to DATABASE. Returns the position of the appended - entry if successful, or -1 on error. */ -int -append_entry (utmp_database *database, const struct utmp *entry) -{ - int result = -1; - struct flock fl; - ssize_t nbytes; - off_t offset; - - /* Try to lock the file. */ - memset (&fl, 0, sizeof (struct flock)); - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fcntl (database->fd, F_SETLKW, &fl); - - offset = lseek (database->fd, 0, SEEK_END); - if (offset % sizeof (struct utmp) != 0) - { - offset -= offset % sizeof (struct utmp); - ftruncate (database->fd, offset); - - if (lseek (database->fd, 0, SEEK_END) < 0) - goto fail; - } - - nbytes = write (database->fd, entry, sizeof (struct utmp)); - if (nbytes != sizeof (struct utmp)) - { - ftruncate (database->fd, offset); - goto fail; - } - - result = offset / sizeof (struct utmp); - -fail: - /* And unlock the file. */ - fl.l_type = F_UNLCK; - fcntl (database->fd, F_SETLKW, &fl); - - return result; -} - - -int -read_old_entry (utmp_database *database, int position, - struct utmp *entry) -{ - struct xtmp old_entry; - ssize_t nbytes; - off_t offset; - - offset = position * sizeof (struct xtmp); - if (lseek (database->old_fd, offset, SEEK_SET) < 0) - return -1; - |
