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nixpkgs/pkgs/os-specific/linux/sysklogd/sysklogd-1.4.1-cvs-20050525.diff
Armijn Hemel 059d1d391b add default Nix expression and patch for sysklogd. The patch allows sysklogd to 
be compiled against kernel headers for the Linux 2.6 kernel. As it turns out
many, if not all, distributions use 2.4 kernel headers for glibc. From my
Fedora Core 3 system:

$ rpm -qf /usr/include/linux/time.h
glibc-kernheaders-2.4-9.1.87

The thing is that compilation now barfs, because some constants are needed
that are defined in <linux/autoconf.h> which is empty the way we generate
the kernel headers currently in nixpkgs. The source tree needs to be
configured. Another challenge to solve :)


svn path=/nixpkgs/trunk/; revision=3784
2005-09-06 22:39:03 +00:00

900 lines
29 KiB
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Raw Blame History

diff -ruN sysklogd-1.4.1/CHANGES sysklogd-1.4.1.new/CHANGES
--- sysklogd-1.4.1/CHANGES 2001-03-11 20:35:51.000000000 +0100
+++ sysklogd-1.4.1.new/CHANGES 2005-09-06 16:49:12.000000000 +0200
@@ -1,3 +1,42 @@
+Version 1.4.2
+
+ . Dmitry V. Levin <ldv@altlinux.org>
+ - Close file descriptor in FindSymbolFile() in ksym.c in order not to
+ leak file descriptors.
+ . Solar Designer <solar@openwall.com>
+ - improve crunch_list()
+ - Prevent potential buffer overflow in reading messages from the
+ kernel log ringbuffer.
+ - Ensure that "len" is not placed in a register, and that the
+ endtty() signal handler is not installed too early which could
+ cause a segmentation fault or worse.
+ . Steve Grubb <linux_4ever@yahoo.com>
+ - fix memory calculation in crunch_list()
+ . Martin Schulze <joey@infodrom.org>
+ - klogd will reconnect to the logger (mostly syslogd) after it went
+ away
+ - On heavily loaded system syslog will not spit out error messages
+ anymore when recvfrom() results in EAGAIN
+ - Makefile improvements
+ - Local copy of module.h
+ - Improved sysklogd.8
+ - Always log with syslogd's timezone and locale
+ - Remove trailing newline when forwarding messages
+ . Jon Burgess <Jon_Burgess@eur.3com.com>
+ - Moved the installation of the signal handler up a little bit so it
+ guaranteed to be available when the child is forked, hence, fixing a
+ race condition. This used to create problems with UML and fast
+ machines.
+ . Greg Trounson <gregt@maths.otago.ac.nz>
+ - Improved README.linux
+ . Ulf Härnhammar <Ulf.Harnhammar.9485@student.uu.se>
+ - Bondary check for fscanf() in InitKsyms() and CheckMapVersion()
+ . Colin Phipps <cph@cph.demon.co.uk>
+ - Don't block on the network socket in case of package los
+ . Dirk Mueller <mueller@kde.org>
+ - Don't crash when filesize limit is reached (e.g. without LFS)
+
+
Version 1.4.1
. klogd will set the console log level only if `-c' is given on the
@@ -30,3 +69,9 @@
. Olaf Kirch <okir@caldera.de>
- Remove Unix Domain Sockets and switch to Datagram Unix Sockets
. Several bugfixes and improvements, please refer to the .c files
+
+
+Local variables:
+mode: indented-text
+fill-column: 72
+End:
diff -ruN sysklogd-1.4.1/klogd.8 sysklogd-1.4.1.new/klogd.8
--- sysklogd-1.4.1/klogd.8 2001-03-11 20:35:51.000000000 +0100
+++ sysklogd-1.4.1.new/klogd.8 2005-09-06 16:49:12.000000000 +0200
@@ -3,8 +3,9 @@
.\" Sun Jul 30 01:35:55 MET: Martin Schulze: Updates
.\" Sun Nov 19 23:22:21 MET: Martin Schulze: Updates
.\" Mon Aug 19 09:42:08 CDT 1996: Dr. G.W. Wettstein: Updates
+.\" Fri Mar 11 17:11:46 CET 2005: Martin Schulze: sysctl updates
.\"
-.TH KLOGD 8 "21 August, 1999" "Version 1.4" "Linux System Administration"
+.TH KLOGD 8 "11 March 2005" "Version 1.4" "Linux System Administration"
.SH NAME
klogd \- Kernel Log Daemon
.LP
@@ -38,6 +39,12 @@
.TP
.BI "\-c " n
Sets the default log level of console messages to \fIn\fR.
+This should nowardays be configured with the
+.BR sysctl (8)
+program, e.g. via
+.BI "sysctl kernel.printk=" n
+or via
+.IR /etc/sysctl.conf .
.TP
.B "\-d"
Enable debugging mode. This will generate \fBLOTS\fR of output to
@@ -321,7 +328,7 @@
.B klogd
to reload the module symbol information whenever a protection fault
is detected. Caution should be used before invoking the program in
-\'paranoid\' mode. The stability of the kernel and the operating
+\&'paranoid\&' mode. The stability of the kernel and the operating
environment is always under question when a protection fault occurs.
Since the klogd daemon must execute system calls in order to read the
module symbol information there is the possibility that the system may
diff -ruN sysklogd-1.4.1/klogd.c sysklogd-1.4.1.new/klogd.c
--- sysklogd-1.4.1/klogd.c 2001-03-11 20:40:10.000000000 +0100
+++ sysklogd-1.4.1.new/klogd.c 2005-09-06 16:49:12.000000000 +0200
@@ -243,6 +243,9 @@
* people have submitted patches: Troels Walsted Hansen
* <troels@thule.no>, Wolfgang Oertl <Wolfgang.Oertl@uibk.ac.at>
* and Thomas Roessler.
+ * Thu Apr 29 15:24:07 2004: Solar Designer <solar@openwall.com>
+ * Prevent potential buffer overflow in reading messages from the
+ * kernel log rinbuffer.
*/
@@ -938,7 +941,7 @@
* messages into this fresh buffer.
*/
memset(log_buffer, '\0', sizeof(log_buffer));
- if ( (rdcnt = ksyslog(2, log_buffer, sizeof(log_buffer))) < 0 )
+ if ( (rdcnt = ksyslog(2, log_buffer, sizeof(log_buffer)-1)) < 0 )
{
if ( errno == EINTR )
return;
diff -ruN sysklogd-1.4.1/ksym.c sysklogd-1.4.1.new/ksym.c
--- sysklogd-1.4.1/ksym.c 2000-09-12 23:53:31.000000000 +0200
+++ sysklogd-1.4.1.new/ksym.c 2005-09-06 16:49:12.000000000 +0200
@@ -105,6 +105,15 @@
*
* Tue Sep 12 23:48:12 CEST 2000: Martin Schulze <joey@infodrom.ffis.de>
* Close symbol file in InitKsyms() when an error occurred.
+ *
+ * Thu Apr 29 18:07:16 CEST 2004: Dmitry Levin <ldv@altlinux.org>
+ * Close file descriptor in FindSymbolFile() in order not to leak
+ * file descriptors.
+ *
+ * Fri Jul 16 08:32:49 CEST 2004: Ulf Härnhammar <Ulf.Harnhammar.9485@student.uu.se>
+ * Added boundary check for fscanf() in InitKsyms() and
+ * CheckMapVersion() to prevent an unintended crash when reading
+ * an incorrect System.map.
*/
@@ -236,7 +245,7 @@
*/
while ( !feof(sym_file) )
{
- if ( fscanf(sym_file, "%lx %c %s\n", &address, &type, sym)
+ if ( fscanf(sym_file, "%lx %c %511s\n", &address, &type, sym)
!= 3 )
{
Syslog(LOG_ERR, "Error in symbol table input (#1).");
@@ -344,6 +353,7 @@
if ( (sym_file = fopen(symfile, "r")) != (FILE *) 0 ) {
if (CheckMapVersion(symfile) == 1)
file = symfile;
+ fclose (sym_file);
}
if (sym_file == (FILE *) 0 || file == (char *) 0) {
sprintf (symfile, "%s", *mf);
@@ -352,6 +362,7 @@
if ( (sym_file = fopen(symfile, "r")) != (FILE *) 0 ) {
if (CheckMapVersion(symfile) == 1)
file = symfile;
+ fclose (sym_file);
}
}
@@ -533,7 +544,7 @@
version = 0;
while ( !feof(sym_file) && (version == 0) )
{
- if ( fscanf(sym_file, "%lx %c %s\n", &address, \
+ if ( fscanf(sym_file, "%lx %c %511s\n", &address, \
&type, sym) != 3 )
{
Syslog(LOG_ERR, "Error in symbol table input (#2).");
@@ -899,3 +910,11 @@
return;
}
#endif
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
diff -ruN sysklogd-1.4.1/ksym_mod.c sysklogd-1.4.1.new/ksym_mod.c
--- sysklogd-1.4.1/ksym_mod.c 2000-09-12 23:15:28.000000000 +0200
+++ sysklogd-1.4.1.new/ksym_mod.c 2005-09-06 16:49:12.000000000 +0200
@@ -78,6 +78,11 @@
*
* Tue Sep 12 23:11:13 CEST 2000: Martin Schulze <joey@infodrom.ffis.de>
* Changed llseek() to lseek64() in order to skip a libc warning.
+ *
+ * Wed Mar 31 17:35:01 CEST 2004: Martin Schulze <joey@infodrom.org>
+ * Removed references to <linux/module.h> since it doesn't work
+ * anymore with its recent content from Linux 2.4/2.6, created
+ * module.h locally instead.
*/
@@ -89,11 +94,12 @@
#include <errno.h>
#include <sys/fcntl.h>
#include <sys/stat.h>
+#include "module.h"
#if !defined(__GLIBC__)
#include <linux/time.h>
-#include <linux/module.h>
+#include <linux/linkage.h>
#else /* __GLIBC__ */
-#include <linux/module.h>
+#include <linux/linkage.h>
extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
extern int get_kernel_syms __P ((struct kernel_sym *__table));
#endif /* __GLIBC__ */
@@ -107,7 +113,7 @@
#if !defined(__GLIBC__)
/*
- * The following bit uses some kernel/library magic to product what
+ * The following bit uses some kernel/library magic to produce what
* looks like a function call to user level code. This function is
* actually a system call in disguise. The purpose of the getsyms
* call is to return a current copy of the in-kernel symbol table.
diff -ruN sysklogd-1.4.1/Makefile sysklogd-1.4.1.new/Makefile
--- sysklogd-1.4.1/Makefile 1998-10-12 22:25:15.000000000 +0200
+++ sysklogd-1.4.1.new/Makefile 2005-09-06 16:49:12.000000000 +0200
@@ -4,12 +4,15 @@
#CFLAGS= -g -DSYSV -Wall
#LDFLAGS= -g
CFLAGS= $(RPM_OPT_FLAGS) -O3 -DSYSV -fomit-frame-pointer -Wall -fno-strength-reduce
+# -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
LDFLAGS= -s
# Look where your install program is.
INSTALL = /usr/bin/install
-BINDIR = /usr/sbin
-MANDIR = /usr/man
+
+# Destination paths, set prefix=/opt if required
+BINDIR = $(prefix)/usr/sbin
+MANDIR = $(prefix)/usr/share/man
# There is one report that under an all ELF system there may be a need to
# explicilty link with libresolv.a. If linking syslogd fails you may wish
@@ -34,8 +37,9 @@
# The following define establishes ownership for the man pages.
# Avery tells me that there is a difference between Debian and
# Slackware. Rather than choose sides I am leaving it up to the user.
-MAN_OWNER = root
-# MAN_OWNER = man
+MAN_USER = root
+MAN_GROUP = root
+MAN_PERMS = 644
# The following define establishes the name of the pid file for the
# syslogd daemon. The library include file (paths.h) defines the
@@ -116,7 +120,7 @@
${INSTALL} -m 500 -s klogd ${BINDIR}/klogd
install_man:
- ${INSTALL} -o ${MAN_OWNER} -g ${MAN_OWNER} -m 644 sysklogd.8 ${MANDIR}/man8/sysklogd.8
- ${INSTALL} -o ${MAN_OWNER} -g ${MAN_OWNER} -m 644 syslogd.8 ${MANDIR}/man8/syslogd.8
- ${INSTALL} -o ${MAN_OWNER} -g ${MAN_OWNER} -m 644 syslog.conf.5 ${MANDIR}/man5/syslog.conf.5
- ${INSTALL} -o ${MAN_OWNER} -g ${MAN_OWNER} -m 644 klogd.8 ${MANDIR}/man8/klogd.8
+ ${INSTALL} -o ${MAN_USER} -g ${MAN_GROUP} -m ${MAN_PERMS} sysklogd.8 ${MANDIR}/man8/sysklogd.8
+ ${INSTALL} -o ${MAN_USER} -g ${MAN_GROUP} -m ${MAN_PERMS} syslogd.8 ${MANDIR}/man8/syslogd.8
+ ${INSTALL} -o ${MAN_USER} -g ${MAN_GROUP} -m ${MAN_PERMS} syslog.conf.5 ${MANDIR}/man5/syslog.conf.5
+ ${INSTALL} -o ${MAN_USER} -g ${MAN_GROUP} -m ${MAN_PERMS} klogd.8 ${MANDIR}/man8/klogd.8
diff -ruN sysklogd-1.4.1/module.h sysklogd-1.4.1.new/module.h
--- sysklogd-1.4.1/module.h 1970-01-01 01:00:00.000000000 +0100
+++ sysklogd-1.4.1.new/module.h 2005-09-06 16:49:12.000000000 +0200
@@ -0,0 +1,90 @@
+/*
+ module.h - Miscellaneous module definitions
+ Copyright (c) 1996 Richard Henderson <rth@tamu.edu>
+ Copyright (c) 2004 Martin Schulze <joey@infodrom.org>
+
+ This file is part of the sysklogd package.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/* ChangeLog:
+ *
+ * Wed Mar 31 17:35:01 CEST 2004: Martin Schulze <joey@infodrom.org>
+ * Created local copy of module.h based on the content of Linux
+ * 2.2 since <linux/module.h> doesn't work anymore with its
+ * recent content from Linux 2.4/2.6.
+ */
+
+#include <asm/atomic.h>
+
+#define MODULE_NAME_LEN 60
+
+struct kernel_sym
+{
+ unsigned long value;
+ char name[MODULE_NAME_LEN];
+};
+
+
+struct list_head {
+ struct list_head *next, *prev;
+};
+
+
+struct module_info
+{
+ unsigned long addr;
+ unsigned long size;
+ unsigned long flags;
+ long usecount;
+};
+
+
+struct module
+{
+ unsigned long size_of_struct; /* == sizeof(module) */
+ struct module *next;
+ const char *name;
+ unsigned long size;
+
+ union
+ {
+ int usecount;
+ long pad;
+ } uc; /* Needs to keep its size - so says rth */
+
+ unsigned long flags; /* AUTOCLEAN et al */
+
+ unsigned nsyms;
+ unsigned ndeps;
+
+ struct module_symbol *syms;
+ struct module_ref *deps;
+ struct module_ref *refs;
+ int (*init)(void);
+ void (*cleanup)(void);
+ const struct exception_table_entry *ex_table_start;
+ const struct exception_table_entry *ex_table_end;
+#ifdef __alpha__
+ unsigned long gp;
+#endif
+ /* Members past this point are extensions to the basic
+ module support and are optional. Use mod_opt_member()
+ to examine them. */
+ const struct module_persist *persist_start;
+ const struct module_persist *persist_end;
+ int (*can_unload)(void);
+};
diff -ruN sysklogd-1.4.1/pidfile.c sysklogd-1.4.1.new/pidfile.c
--- sysklogd-1.4.1/pidfile.c 1998-02-10 23:37:12.000000000 +0100
+++ sysklogd-1.4.1.new/pidfile.c 2005-09-06 16:49:12.000000000 +0200
@@ -87,7 +87,7 @@
int fd;
int pid;
- if ( ((fd = open(pidfile, O_RDWR|O_CREAT, 0644)) == -1)
+ if ( ((fd = open(pidfile, O_RDWR|O_CREAT|O_TRUNC, 0644)) == -1)
|| ((f = fdopen(fd, "r+")) == NULL) ) {
fprintf(stderr, "Can't open or create %s.\n", pidfile);
return 0;
diff -ruN sysklogd-1.4.1/README.1st sysklogd-1.4.1.new/README.1st
--- sysklogd-1.4.1/README.1st 1997-06-02 19:21:39.000000000 +0200
+++ sysklogd-1.4.1.new/README.1st 2005-09-06 16:49:12.000000000 +0200
@@ -1,5 +1,5 @@
-Very important information before using version 1.3
----------------------------------------------------
+Important information
+---------------------
The included version of syslogd behaves in a slightly different manner
to the one in former releases. Please review the following important
@@ -63,3 +63,10 @@
these scripts should remove all old .pid files found in /var/run.
This will insure that klogd and syslogd start properly even if prior
executions have been terminated harshly.
+
+* Large file support, i.e. support to write to log files that are
+ larger than 2 GB is not part of syslogd, but a matter of the Glibc
+ emitting different system calls to the kernel interface. To support
+ large files you'll have to compile syslogd with the compiler defines
+ -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE so that glibc adjusts the
+ system calls.
diff -ruN sysklogd-1.4.1/README.linux sysklogd-1.4.1.new/README.linux
--- sysklogd-1.4.1/README.linux 1999-01-19 01:09:12.000000000 +0100
+++ sysklogd-1.4.1.new/README.linux 2005-09-06 16:49:12.000000000 +0200
@@ -40,12 +40,17 @@
a useful addition to the software gene pool.
There is a mailing list covering this package and syslog in general.
-The lists address is sysklogd@Infodrom.North.DE . To subscribe send a
-mail to Majordomo@Infodrom.North.DE with a line "subscribe sysklogd"
+The lists address is infodrom-sysklogd@lists.infodrom.org . To subscribe send a
+mail to majordomo@lists.infodrom.org with a line "subscribe infodrom-sysklogd"
in the message body.
-New versions of this package will be available at Joey's ftp server.
-ftp://ftp.infodrom.north.de/pub/people/joey/sysklogd/
+A second mailing list exists as infodrom-sysklogd-cvs@lists.infodrom.org. Only
+CVS messages and diffs are distributed there. Whenever new code is added to
+sysklogd, CVS generates a mail from these changes which will be sent to
+this list. Discussions will take place on the first list.
+
+The latest version of this software can be found at:
+http://www.infodrom.org/projects/sysklogd/download.php3
Best regards,
@@ -67,6 +72,6 @@
Martin Schulze
Infodrom Oldenburg
-joey@linux.de
+joey@infodrom.org
-And a host of bug reporters whose contributions cannot be underestimated.
+And a number of bug reporters whose contributions cannot be underestimated.
diff -ruN sysklogd-1.4.1/sysklogd.8 sysklogd-1.4.1.new/sysklogd.8
--- sysklogd-1.4.1/sysklogd.8 2001-03-11 20:35:51.000000000 +0100
+++ sysklogd-1.4.1.new/sysklogd.8 2005-09-06 16:49:12.000000000 +0200
@@ -84,7 +84,7 @@
.B MAXFUNIX
within the syslogd.c source file. An example for a chroot() daemon is
described by the people from OpenBSD at
-http://www.psionic.com/papers/dns.html.
+<http://www.guides.sk/psionic/dns/>.
.TP
.B "\-d"
Turns on debug mode. Using this the daemon will not proceed a
@@ -117,7 +117,8 @@
between two \fI-- MARK --\fR lines is 20 minutes. This can be changed
with this option. Setting the
.I interval
-to zero turns it off entirely.
+to zero turns it off entirely. Depending on other log messages
+generated these lines may not be written consecutively.
.TP
.B "\-n"
Avoid auto-backgrounding. This is needed especially if the
@@ -364,8 +365,10 @@
To avoid this in further times no messages that were received from a
remote host are sent out to another (or the same) remote host
-anymore. If there are scenarios where this doesn't make sense, please
-drop me (Joey) a line.
+anymore. If you experience are setup in which this doesn't make
+sense, please use the
+.B \-h
+commandline switch.
If the remote host is located in the same domain as the host,
.B syslogd
diff -ruN sysklogd-1.4.1/syslog.c sysklogd-1.4.1.new/syslog.c
--- sysklogd-1.4.1/syslog.c 2001-03-11 20:35:51.000000000 +0100
+++ sysklogd-1.4.1.new/syslog.c 2005-09-06 16:49:12.000000000 +0200
@@ -47,6 +47,9 @@
* Sun Mar 11 20:23:44 CET 2001: Martin Schulze <joey@infodrom.ffis.de>
* Use SOCK_DGRAM for loggin, renables it to work.
*
+ * Wed Aug 27 17:48:16 CEST 2003: Martin Schulze <joey@Infodrom.org>
+ * Improved patch by Michael Pomraning <mjp@securepipe.com> to
+ * reconnect klogd to the logger after it went away.
*/
#include <sys/types.h>
@@ -98,6 +101,7 @@
register char *p;
time_t now;
int fd, saved_errno;
+ int result;
char tbuf[2048], fmt_cpy[1024], *stdp = (char *) 0;
saved_errno = errno;
@@ -167,7 +171,16 @@
}
/* output the message to the local logger */
- if (write(LogFile, tbuf, cnt + 1) >= 0 || !(LogStat&LOG_CONS))
+ result = write(LogFile, tbuf, cnt + 1);
+
+ if (result == -1
+ && (errno == ECONNRESET || errno == ENOTCONN || errno == ECONNREFUSED)) {
+ closelog();
+ openlog(LogTag, LogStat | LOG_NDELAY, LogFacility);
+ result = write(LogFile, tbuf, cnt + 1);
+ }
+
+ if (result >= 0 || !(LogStat&LOG_CONS))
return;
/*
diff -ruN sysklogd-1.4.1/syslog.conf.5 sysklogd-1.4.1.new/syslog.conf.5
--- sysklogd-1.4.1/syslog.conf.5 1999-08-21 12:49:14.000000000 +0200
+++ sysklogd-1.4.1.new/syslog.conf.5 2005-09-06 16:49:12.000000000 +0200
@@ -64,7 +64,7 @@
The
.I facility
is one of the following keywords:
-.BR auth ", " authpriv ", " cron ", " daemon ", " kern ", " lpr ", "
+.BR auth ", " authpriv ", " cron ", " daemon ", " ftp ", " kern ", " lpr ", "
.BR mail ", " mark ", " news ", " security " (same as " auth "), "
.BR syslog ", " user ", " uucp " and " local0 " through " local7 .
The keyword
@@ -121,12 +121,21 @@
This
.BR syslogd (8)
-has a syntax extension to the original BSD source, that makes its use
+has a syntax extension to the original BSD source, which makes its use
more intuitively. You may precede every priority with an equation sign
-(``='') to specify only this single priority and not any of the
-above. You may also (both is valid, too) precede the priority with an
-exclamation mark (``!'') to ignore all that priorities, either exact
-this one or this and any higher priority. If you use both extensions
+(``='') to specify that
+.B syslogd
+should only refer to this single priority and not this priority and
+all higher priorities.
+
+You may also precide the priority with an exclamation mark (``!'') if
+you want
+.B syslogd
+to ignore this priority and all higher priorities.
+You may even use both, the exclamation mark and the equation sign if
+you want
+.B syslogd
+to ignore only this single priority. If you use both extensions
than the exclamation mark must occur before the equation sign, just
use it intuitively.
@@ -300,7 +309,7 @@
.B syslogd
log all messages that come with either the
.BR info " or the " notice
-facility into the file
+priority into the file
.IR /var/log/messages ,
except for all messages that use the
.B mail
diff -ruN sysklogd-1.4.1/syslogd.c sysklogd-1.4.1.new/syslogd.c
--- sysklogd-1.4.1/syslogd.c 2001-03-11 20:40:10.000000000 +0100
+++ sysklogd-1.4.1.new/syslogd.c 2005-09-06 16:49:12.000000000 +0200
@@ -441,6 +441,39 @@
* Don't return a closed fd if `-a' is called with a wrong path.
* Thanks to Bill Nottingham <notting@redhat.com> for providing
* a patch.
+ * Thu Apr 13 05:08:10 CEST 2001: Jon Burgess <Jon_Burgess@eur.3com.com>
+ * Moved the installation of the signal handler up a little bit
+ * so it guaranteed to be available when the child is forked,
+ * hence, fixing a race condition. This used to create problems
+ * with UML and fast machines.
+ *
+ * Sat Apr 17 18:03:05 CEST 2004: Steve Grubb <linux_4ever@yahoo.com>
+ * Correct memory allocation for for commandline arguments in
+ * crunch_list().
+ *
+ * Thu Apr 29 12:38:39 CEST 2004: Solar Designer <solar@openwall.com>
+ * Applied Openwall paranoia patches to improve crunch_list().
+ *
+ * Tue May 4 16:47:30 CEST 2004: Solar Designer <solar@openwall.com>
+ * Ensure that "len" is not placed in a register, and that the
+ * endtty() signal handler is not installed too early which could
+ * cause a segmentation fault or worse.
+ *
+ * Tue May 4 16:52:01 CEST 2004: Solar Designer <solar@openwall.com>
+ * Adjust the size of a variable to prevent a buffer overflow
+ * should _PATH_DEV ever contain something different than "/dev/".
+ *
+ * Tue Nov 2 20:28:23 CET 2004: Colin Phipps <cph@cph.demon.co.uk>
+ * Don't block on the network socket, in case a packet gets lost
+ * between select and recv.
+ *
+ * Sun Nov 7 12:28:47 CET 2004: Martin Schulze <joey@infodrom.org>
+ * Discard any timestamp information found in received syslog
+ * messages. This will affect local messages sent from a
+ * different timezone.
+ *
+ * Sun Nov 7 13:47:00 CET 2004: Martin Schulze <joey@infodrom.org>
+ * Remove trailing newline when forwarding messages.
*/
@@ -890,11 +923,11 @@
dprintf("Checking pidfile.\n");
if (!check_pid(PidFile))
{
+ signal (SIGTERM, doexit);
if (fork()) {
/*
* Parent process
*/
- signal (SIGTERM, doexit);
sleep(300);
/*
* Not reached unless something major went wrong. 5
@@ -992,6 +1025,7 @@
(void) signal(SIGCHLD, reapchild);
(void) signal(SIGALRM, domark);
(void) signal(SIGUSR1, Debug ? debug_switch : SIG_IGN);
+ (void) signal(SIGXFSZ, SIG_IGN);
(void) alarm(TIMERINTVL);
/* Create a partial message table for all file descriptors. */
@@ -1141,13 +1175,13 @@
*/
printchopped(from, line, \
i + 2, finet);
- } else if (i < 0 && errno != EINTR) {
+ } else if (i < 0 && errno != EINTR && errno != EAGAIN) {
dprintf("INET socket error: %d = %s.\n", \
errno, strerror(errno));
logerror("recvfrom inet");
/* should be harmless now that we set
* BSDCOMPAT on the socket */
- sleep(10);
+ sleep(1);
}
}
#endif
@@ -1216,6 +1250,7 @@
{
int fd, on = 1;
struct sockaddr_in sin;
+ int sockflags;
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0) {
@@ -1241,6 +1276,24 @@
close(fd);
return -1;
}
+ /* We must not block on the network socket, in case a packet
+ * gets lost between select and recv, otherise the process
+ * will stall until the timeout, and other processes trying to
+ * log will also stall.
+ */
+ if ((sockflags = fcntl(fd, F_GETFL)) != -1) {
+ sockflags |= O_NONBLOCK;
+ /*
+ * SETFL could fail too, so get it caught by the subsequent
+ * error check.
+ */
+ sockflags = fcntl(fd, F_SETFL, sockflags);
+ }
+ if (sockflags == -1) {
+ logerror("fcntl(O_NONBLOCK), suspending inet");
+ close(fd);
+ return -1;
+ }
if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
logerror("bind, suspending inet");
close(fd);
@@ -1254,30 +1307,26 @@
crunch_list(list)
char *list;
{
- int count, i;
+ int i, m, n;
char *p, *q;
char **result = NULL;
p = list;
/* strip off trailing delimiters */
- while (p[strlen(p)-1] == LIST_DELIMITER) {
- count--;
+ while (*p && p[strlen(p)-1] == LIST_DELIMITER)
p[strlen(p)-1] = '\0';
- }
/* cut off leading delimiters */
- while (p[0] == LIST_DELIMITER) {
- count--;
+ while (p[0] == LIST_DELIMITER)
p++;
- }
- /* count delimiters to calculate elements */
- for (count=i=0; p[i]; i++)
- if (p[i] == LIST_DELIMITER) count++;
+ /* count delimiters to calculate the number of elements */
+ for (n = i = 0; p[i]; i++)
+ if (p[i] == LIST_DELIMITER) n++;
- if ((result = (char **)malloc(sizeof(char *) * count+2)) == NULL) {
+ if ((result = (char **)malloc(sizeof(char *) * (n + 2))) == NULL) {
printf ("Sorry, can't get enough memory, exiting.\n");
- exit(0);
+ exit(1);
}
/*
@@ -1285,30 +1334,28 @@
* characters are different from any delimiters,
* so we don't have to care about this.
*/
- count = 0;
- while ((q=strchr(p, LIST_DELIMITER))) {
- result[count] = (char *) malloc((q - p + 1) * sizeof(char));
- if (result[count] == NULL) {
+ m = 0;
+ while ((q = strchr(p, LIST_DELIMITER)) && m < n) {
+ result[m] = (char *) malloc((q - p + 1) * sizeof(char));
+ if (result[m] == NULL) {
printf ("Sorry, can't get enough memory, exiting.\n");
- exit(0);
+ exit(1);
}
- strncpy(result[count], p, q - p);
- result[count][q - p] = '\0';
+ memcpy(result[m], p, q - p);
+ result[m][q - p] = '\0';
p = q; p++;
- count++;
+ m++;
}
- if ((result[count] = \
- (char *)malloc(sizeof(char) * strlen(p) + 1)) == NULL) {
+ if ((result[m] = strdup(p)) == NULL) {
printf ("Sorry, can't get enough memory, exiting.\n");
- exit(0);
+ exit(1);
}
- strcpy(result[count],p);
- result[++count] = NULL;
+ result[++m] = NULL;
#if 0
- count=0;
- while (result[count])
- dprintf ("#%d: %s\n", count, StripDomains[count++]);
+ m = 0;
+ while (result[m])
+ dprintf ("#%d: %s\n", m, result[m++]);
#endif
return result;
}
@@ -1539,30 +1586,48 @@
int fac, prilev, lognum;
int msglen;
char *timestamp;
+#ifdef __gnu_linux__
+ sigset_t mask;
+#else
+#ifndef SYSV
+ sigset_t omask;
+#endif
+#endif
dprintf("logmsg: %s, flags %x, from %s, msg %s\n", textpri(pri), flags, from, msg);
+#ifdef __gnu_linux__
+ sigemptyset(&mask);
+ sigaddset(&mask, SIGHUP);
+ sigaddset(&mask, SIGALRM);
+ sigprocmask(SIG_BLOCK, &mask, NULL);
+#else
#ifndef SYSV
omask = sigblock(sigmask(SIGHUP)|sigmask(SIGALRM));
#endif
+#endif
/*
* Check to see if msg looks non-standard.
+ *
+ * A message looks like
+ * Nov 17 11:42:33 CRON[
+ * 01234567890123456
+ * ^ ^ ^ ^ ^
+ *
+ * Remote messages are not accompanied by a timestamp.
+ * Local messages are accompanied by a timestamp (program's timezone)
*/
msglen = strlen(msg);
- if (msglen < 16 || msg[3] != ' ' || msg[6] != ' ' ||
- msg[9] != ':' || msg[12] != ':' || msg[15] != ' ')
- flags |= ADDDATE;
-
- (void) time(&now);
- if (flags & ADDDATE)
- timestamp = ctime(&now) + 4;
- else {
- timestamp = msg;
+ if (!(msglen < 16 || msg[3] != ' ' || msg[6] != ' ' ||
+ msg[9] != ':' || msg[12] != ':' || msg[15] != ' ')) {
msg += 16;
msglen -= 16;
}
+ (void) time(&now);
+ timestamp = ctime(&now) + 4;
+
/* extract facility and priority level */
if (flags & MARK)
fac = LOG_NFACILITIES;
@@ -1581,9 +1646,13 @@
(void) close(f->f_file);
f->f_file = -1;
}
+#ifdef __gnu_linux__
+ sigprocmask(SIG_UNBLOCK, &mask, NULL);
+#else
#ifndef SYSV
(void) sigsetmask(omask);
#endif
+#endif
return;
}
#ifdef SYSV
@@ -1646,9 +1715,13 @@
}
}
}
+#ifdef __gnu_linux__
+ sigprocmask(SIG_UNBLOCK, &mask, NULL);
+#else
#ifndef SYSV
(void) sigsetmask(omask);
#endif
+#endif
}
#if FALSE
} /* balance parentheses for emacs */
@@ -1771,7 +1844,7 @@
dprintf("Not sending message to remote.\n");
else {
f->f_time = now;
- (void) snprintf(line, sizeof(line), "<%d>%s\n", f->f_prevpri, \
+ (void) snprintf(line, sizeof(line), "<%d>%s", f->f_prevpri, \
(char *) iov[4].iov_base);
l = strlen(line);
if (l > MAXLINE)
@@ -1815,7 +1888,7 @@
v->iov_len = 1;
}
again:
- /* f->f_file == -1 is an indicator that the we couldn't
+ /* f->f_file == -1 is an indicator that we couldn't
open the file at startup. */
if (f->f_file == -1)
break;
@@ -1852,7 +1925,7 @@
errno = e;
logerror(f->f_un.f_fname);
}
- } else if (f->f_flags & SYNC_FILE)
+ } else if (f->f_type == F_FILE && (f->f_flags & SYNC_FILE))
(void) fsync(f->f_file);
break;
@@ -1891,7 +1964,7 @@
register struct filed *f;
struct iovec *iov;
{
- char p[6 + UNAMESZ];
+ char p[sizeof (_PATH_DEV) + UNAMESZ];
register int i;
int ttyf, len;
static int reenter = 0;
@@ -1899,6 +1972,8 @@
struct utmp *uptr;
char greetings[200];
+ (void) &len;
+
if (reenter++)
return;
@@ -1913,7 +1988,6 @@
if (fork() == 0) {
(void) signal(SIGTERM, SIG_DFL);
(void) alarm(0);
- (void) signal(SIGALRM, endtty);
#ifndef SYSV
(void) signal(SIGTTOU, SIG_IGN);
(void) sigsetmask(0);
@@ -1929,7 +2003,7 @@
/* is this slot used? */
if (ut.ut_name[0] == '\0')
continue;
- if (ut.ut_type == LOGIN_PROCESS)
+ if (ut.ut_type != USER_PROCESS)
continue;
if (!(strcmp (ut.ut_name,"LOGIN"))) /* paranoia */
continue;
@@ -1959,6 +2033,7 @@
iov[1].iov_len = 0;
}
if (setjmp(ttybuf) == 0) {
+ (void) signal(SIGALRM, endtty);
(void) alarm(15);
/* open the terminal */
ttyf = open(p, O_WRONLY|O_NOCTTY);
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