* Fixed typos in syslogd-listfiles(1), thanks to Francesco Potorti`
<F.Potorti@cnuce.cnr.it> (closes: Bug#20903) * Corrected email address for Shane Alderton (closes: Bug#20765) * Fixed manpage to not reflect reverse implementated SIGALRM signal handler (closes: Bug#20647) * Modified behaviour with including <sys/module.h> (closes: Bug#20556) * Added correct prototype for llseek() (closes: Bug#20507, Bug#20220) * Added more log information if problems occurr while reading a system map file. * Modified System.map read function to try all possible map files until a file with matching version is found. * Added Debian release to klogd * Switched to fgets() as gets() is not buffer overrun secure. * Modified loop for detecting the correct system map.
This commit is contained in:
parent
92fe2ad65d
commit
1f3d627188
2
Makefile
2
Makefile
@ -3,7 +3,7 @@
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CC= gcc
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#CFLAGS= -g -DSYSV -Wall
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#LDFLAGS= -g
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CFLAGS= -O3 -DSYSV -fomit-frame-pointer -Wall -fno-strength-reduce
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CFLAGS= $(RPM_OPT_FLAGS) -O3 -DSYSV -fomit-frame-pointer -Wall -fno-strength-reduce
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LDFLAGS= -s
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# Look where your install program is.
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@ -63,7 +63,7 @@ Juha Virtanen
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jiivee@hut.fi
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Shane Alderton
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shane@scs.apana.org.au
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shane@ion.apana.org.au
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Martin Schulze
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Infodrom Oldenburg
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15
klogd.c
15
klogd.c
@ -196,6 +196,11 @@
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* As the bug covering the %'s introduced a problem with
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* unevaluated priorities I've worked out a real fix that strips
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* %'s to an even number which is harmless for printf.
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*
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* Mon Apr 13 18:18:45 CEST 1998: Martin Schulze <joey@infodrom.north.de>
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* Modified System.map read function to try all possible map
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* files until a file with matching version is found. Added support for
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* Debian release.
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*/
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@ -475,8 +480,13 @@ static enum LOGSRC GetKernelLogSrc(void)
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{
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/* Initialize kernel logging. */
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ksyslog(1, NULL, 0);
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#ifdef DEBRELEASE
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Syslog(LOG_INFO, "klogd %s-%s#%s, log source = ksyslog "
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"started.", VERSION, PATCHLEVEL, DEBRELEASE);
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#else
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Syslog(LOG_INFO, "klogd %s-%s, log source = ksyslog "
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"started.", VERSION, PATCHLEVEL);
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#endif
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return(kernel);
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}
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@ -488,8 +498,13 @@ static enum LOGSRC GetKernelLogSrc(void)
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exit(1);
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}
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#ifdef DEBRELEASE
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Syslog(LOG_INFO, "klogd %s-%s#%s, log source = %s started.", \
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VERSION, PATCHLEVEL, DEBRELEASE, _PATH_KLOG);
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#else
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Syslog(LOG_INFO, "klogd %s-%s, log source = %s started.", \
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VERSION, PATCHLEVEL, _PATH_KLOG);
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#endif
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return(proc);
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}
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197
ksym.c
197
ksym.c
@ -83,6 +83,14 @@
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*
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* Fri Jan 9 23:00:08 CET 1998: Martin Schulze <joey@infodrom.north.de>
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* Fixed bug that caused klogd to die if there is no System.map available.
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*
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* Sun 29 Mar 18:14:07 BST 1998: Mark Simon Phillips <msp@mail.virgin.net>
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* Switched to fgets() as gets() is not buffer overrun secure.
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*
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* Mon Apr 13 18:18:45 CEST 1998: Martin Schulze <joey@infodrom.north.de>
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* Modified loop for detecting the correct system map. Now it won't
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* stop if a file has been found but doesn't contain the correct map.
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* Special thanks go go Mark Simon Phillips for the hint.
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*/
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@ -131,6 +139,7 @@ static char * FindSymbolFile(void);
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static int AddSymbol(unsigned long, char*);
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static void FreeSymbols(void);
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static int CheckVersion(char *);
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static int CheckMapVersion(char *);
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/**************************************************************************
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@ -294,17 +303,12 @@ extern int InitKsyms(mapfile)
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static char * FindSymbolFile()
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{
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auto char type,
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*file = (char *) 0,
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**mf = system_maps,
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sym[512];
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auto char *file = (char *) 0,
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**mf = system_maps;
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auto int version;
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auto struct utsname utsname;
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static char symfile[100];
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auto unsigned long int address;
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auto FILE *sym_file = (FILE *) 0;
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if ( uname(&utsname) < 0 )
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@ -316,78 +320,31 @@ static char * FindSymbolFile()
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if ( debugging )
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fputs("Searching for symbol map.\n", stderr);
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for (mf = system_maps; *mf != (char *) 0 && sym_file == (FILE *) 0; ++mf)
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for (mf = system_maps; *mf != (char *) 0 && file == (char *) 0; ++mf)
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{
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sprintf (symfile, "%s-%s", *mf, utsname.release);
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if ( debugging )
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fprintf(stderr, "Trying %s.\n", symfile);
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if ( (sym_file = fopen(symfile, "r")) == (FILE *) 0 ) {
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sprintf (symfile, "%s", *mf);
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if ( debugging )
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fprintf(stderr, "Trying %s.\n", symfile);
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if ( (sym_file = fopen(symfile, "r")) == (FILE *) 0 )
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continue;
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}
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}
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if (sym_file) {
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/*
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* At this point a map file was successfully opened. We
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* now need to search this file and look for a version
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* version information.
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*/
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version = 0;
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while ( !feof(sym_file) && (version == 0) )
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{
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if ( fscanf(sym_file, "%lx %c %s\n", &address, \
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&type, sym) != 3 )
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{
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Syslog(LOG_ERR, "Error in symbol table input (#2).");
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fclose(sym_file);
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return((char *) 0);
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}
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if ( VERBOSE_DEBUGGING && debugging )
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fprintf(stderr, "Address: %lx, Type: %c, " \
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"Symbol: %s\n", address, type, sym);
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version = CheckVersion(sym);
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}
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fclose(sym_file);
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switch ( version )
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{
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case -1:
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Syslog(LOG_ERR, "Symbol table has incorrect " \
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"version number.\n");
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break;
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case 0:
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if ( debugging )
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fprintf(stderr, "No version information " \
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"found.\n");
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if ( file == (char *) 0 )
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{
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if ( debugging )
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fputs("Saving filename.\n", stderr);
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if ( (sym_file = fopen(symfile, "r")) != (FILE *) 0 ) {
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if (CheckMapVersion(symfile) == 1)
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file = symfile;
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}
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break;
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case 1:
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if ( debugging )
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fprintf(stderr, "Found table with " \
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"matching version number.\n");
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return(symfile);
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break;
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}
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if (sym_file == (FILE *) 0 || file == (char *) 0) {
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sprintf (symfile, "%s", *mf);
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if ( debugging )
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fprintf(stderr, "Trying %s.\n", symfile);
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if ( (sym_file = fopen(symfile, "r")) != (FILE *) 0 ) {
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if (CheckMapVersion(symfile) == 1)
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file = symfile;
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}
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}
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}
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/*
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* At this stage of the game we are at the end of the symbol
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* tables. We have evidently not found a symbol map whose version
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* information matches the currently executing kernel. If possible
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* we return a pointer to the first valid symbol map that was
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* encountered.
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* tables.
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*/
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if ( debugging )
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fprintf(stderr, "End of search list encountered.\n");
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@ -400,7 +357,7 @@ static char * FindSymbolFile()
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*
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* Purpose: This function is responsible for determining whether or
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* the system map being loaded matches the version of the
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* currently running kernrel.
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* currently running kernel.
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*
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* The kernel version is checked by examing a variable which
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* is of the form: _Version_66347 (a.out) or Version_66437 (ELF).
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@ -498,6 +455,95 @@ static int CheckVersion(version)
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return(1);
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}
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/**************************************************************************
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* Function: CheckMapVersion
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*
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* Purpose: This function is responsible for determining whether or
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* the system map being loaded matches the version of the
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* currently running kernel. It uses CheckVersion as
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* backend.
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*
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* Arguements: (char *) fname
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*
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* fname:-> A pointer to the string which
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* references the system map file to
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* be used.
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*
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* Return: int
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*
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* -1:-> The currently running kernel version does
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* not match the version in the given file.
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*
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* 0:-> No system map file or no version information.
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*
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* 1:-> The executing kernel is of the same version
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* as the version of the map file.
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**************************************************************************/
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static int CheckMapVersion(fname)
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char *fname;
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{
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int version;
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FILE *sym_file;
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auto unsigned long int address;
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auto char type,
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sym[512];
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if ( (sym_file = fopen(fname, "r")) != (FILE *) 0 ) {
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/*
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* At this point a map file was successfully opened. We
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* now need to search this file and look for version
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* information.
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*/
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Syslog(LOG_INFO, "Inspecting %s", fname);
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version = 0;
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while ( !feof(sym_file) && (version == 0) )
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{
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if ( fscanf(sym_file, "%lx %c %s\n", &address, \
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&type, sym) != 3 )
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{
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Syslog(LOG_ERR, "Error in symbol table input (#2).");
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fclose(sym_file);
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return(0);
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}
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if ( VERBOSE_DEBUGGING && debugging )
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fprintf(stderr, "Address: %lx, Type: %c, " \
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"Symbol: %s\n", address, type, sym);
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version = CheckVersion(sym);
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}
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fclose(sym_file);
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switch ( version )
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{
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case -1:
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Syslog(LOG_ERR, "Symbol table has incorrect " \
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"version number.\n");
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break;
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case 0:
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if ( debugging )
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fprintf(stderr, "No version information " \
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"found.\n");
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break;
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case 1:
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if ( debugging )
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fprintf(stderr, "Found table with " \
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"matching version number.\n");
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break;
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}
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return(version);
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}
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return(0);
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}
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/**************************************************************************
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* Function: AddSymbol
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@ -658,7 +704,7 @@ extern char * ExpandKadds(line, el)
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*symbol;
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char num[15];
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auto int value;
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auto unsigned long int value;
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auto struct symbol sym;
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@ -711,14 +757,14 @@ extern char * ExpandKadds(line, el)
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dlm = *kp;
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strncpy(num,sl+1,kp-sl-1);
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num[kp-sl-1] = '\0';
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value = strtol(num, (char **) 0, 16);
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value = strtoul(num, (char **) 0, 16);
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if ( (symbol = LookupSymbol(value, &sym)) == (char *) 0 )
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symbol = sl;
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strcat(elp, symbol);
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elp += strlen(symbol);
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if ( debugging )
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fprintf(stderr, "Symbol: %s = %x = %s, %d/%d\n", \
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fprintf(stderr, "Symbol: %s = %lx = %s, %x/%d\n", \
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sl+1, value, \
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(sym.size==0) ? symbol+1 : symbol, \
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sym.offset, sym.size);
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@ -728,7 +774,7 @@ extern char * ExpandKadds(line, el)
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{
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--value;
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++kp;
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elp += sprintf(elp, "+%d/%d", sym.offset, sym.size);
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elp += sprintf(elp, "+%x/%d", sym.offset, sym.size);
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}
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strncat(elp, kp, value);
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elp += value;
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@ -796,7 +842,8 @@ extern int main(int argc, char *argv[])
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while ( !feof(stdin) )
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{
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gets(line);
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fgets(line, sizeof(line), stdin);
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if (line[strlen(line)-1] == '\n') line[strlen(line)-1] = '\0'; /* Trash NL char */
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memset(eline, '\0', sizeof(eline));
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ExpandKadds(line, eline);
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fprintf(stdout, "%s\n", eline);
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14
ksym_mod.c
14
ksym_mod.c
@ -63,6 +63,13 @@
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* Thu Mar 19 23:39:29 CET 1998: Manuel Rodrigues <pmanuel@cindy.fe.up.pt>
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* Changed lseek() to llseek() in order to support > 2GB address
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* space which provided by kernels > 2.1.70.
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*
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* Mon Apr 13 18:18:45 CEST 1998: Martin Schulze <joey@infodrom.north.de>
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* Removed <sys/module.h> as it's no longer part of recent glibc
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* versions. Added prototyp for llseek() which has been
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* forgotton in <unistd.h> from glibc. Added more log
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* information if problems occurred while reading a system map
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* file, by submission from Mark Simon Phillips <msp@mail.virgin.net>.
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*/
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@ -78,11 +85,9 @@
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#include <linux/time.h>
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#include <linux/module.h>
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#else /* __GLIBC__ */
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#if !defined(__alpha)
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#include <sys/module.h>
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#else
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#include <linux/module.h>
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#endif /* __alpha */
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extern loff_t llseek __P ((int __fd, loff_t __offset, int __whence));
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extern int get_kernel_syms __P ((struct kernel_sym *__table));
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#endif /* __GLIBC__ */
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#include <stdarg.h>
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#include <paths.h>
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@ -393,6 +398,7 @@ static int AddModule(address, symbol)
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if ( llseek(memfd, address, SEEK_SET) < 0 )
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{
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Syslog(LOG_WARNING, "Error seeking in /dev/kmem\n");
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Syslog(LOG_WARNING, "Symbol %s, value %08x\n", symbol, address);
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return(0);
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}
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if ( read(memfd, \
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|
@ -169,13 +169,6 @@ debug option.
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||||
.TP
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||||
.B SIGCHLD
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||||
Wait for childs if some were born, because of wall'ing messages.
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.TP
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.B SIGALRM
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Every time
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.B syslogd
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receives this signal it will log the mark line. Normally this is done
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||||
by
|
||||
.BR alarm (2).
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||||
.LP
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||||
.SH CONFIGURATION FILE SYNTAX DIFFERENCES
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||||
.B Syslogd
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||||
@ -578,7 +571,7 @@ jiivee@hut.fi
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||||
.TP
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||||
Shane Alderton
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||||
.TP
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||||
shane@scs.apana.org.au
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||||
shane@ion.apana.org.au
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||||
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||||
.TP
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||||
Martin Schulze
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||||
|
@ -113,7 +113,7 @@ static char sccsid[] = "@(#)syslogd.c 5.27 (Berkeley) 10/10/88";
|
||||
* priority information is encoded as a leader on the messages this
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||||
* was causing lines to be placed in erroneous files.
|
||||
*
|
||||
* Also added a patch from Shane Alderton (shane@scs.apana.org.au) to
|
||||
* Also added a patch from Shane Alderton (shane@ion.apana.org.au) to
|
||||
* correct a problem with syslogd dumping core when an attempt was made
|
||||
* to write log messages to a logged-on user. Thank you.
|
||||
*
|
||||
|
Loading…
Reference in New Issue
Block a user