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-rw-r--r--plugins/imklog/ksym.c128
1 files changed, 42 insertions, 86 deletions
diff --git a/plugins/imklog/ksym.c b/plugins/imklog/ksym.c
index 4fa2fbb6..b7d5903e 100644
--- a/plugins/imklog/ksym.c
+++ b/plugins/imklog/ksym.c
@@ -1,8 +1,9 @@
-/*
- ksym.c - functions for kernel address->symbol translation
- Copyright (c) 1995, 1996 Dr. G.W. Wettstein <greg@wind.rmcc.com>
- Copyright (c) 1996 Enjellic Systems Development
-
+/* ksym.c - functions for kernel address->symbol translation
+ * Copyright (c) 1995, 1996 Dr. G.W. Wettstein <greg@wind.rmcc.com>
+ * Copyright (c) 1996 Enjellic Systems Development
+ * Copyright (c) 1998-2007 Martin Schulze <joey@infodrom.org>
+ * Copyright (C) 2007-2008 Rainer Gerhards <rgerhards@adiscon.com>
+ *
* This file is part of rsyslog.
*
* Rsyslog is free software: you can redistribute it and/or modify
@@ -181,26 +182,20 @@ extern int InitKsyms(char *mapfile)
/*
* Search for and open the file containing the kernel symbols.
*/
- if ( mapfile != (char *) 0 )
- {
+ if ( mapfile != (char *) 0 ) {
if ( (sym_file = fopen(mapfile, "r")) == (FILE *) 0 )
{
- Syslog(LOG_WARNING, "Cannot open map file: %s.", \
- mapfile);
+ Syslog(LOG_WARNING, "Cannot open map file: %s.", mapfile);
return(0);
}
- }
- else
- {
- if ( (mapfile = FindSymbolFile()) == (char *) 0 )
- {
+ } else {
+ if ( (mapfile = FindSymbolFile()) == (char *) 0 ) {
Syslog(LOG_WARNING, "Cannot find map file.");
dbgprintf("Cannot find map file.\n");
return(0);
}
- if ( (sym_file = fopen(mapfile, "r")) == (FILE *) 0 )
- {
+ if ( (sym_file = fopen(mapfile, "r")) == (FILE *) 0 ) {
Syslog(LOG_WARNING, "Cannot open map file.");
dbgprintf("Cannot open map file.\n");
return(0);
@@ -216,11 +211,8 @@ extern int InitKsyms(char *mapfile)
* e-mail me a diff containing a parser with suitable political
* correctness -- GW.
*/
- while ( !feof(sym_file) )
- {
- if ( fscanf(sym_file, "%lx %c %s\n", &address, &type, sym)
- != 3 )
- {
+ while ( !feof(sym_file) ) {
+ if ( fscanf(sym_file, "%lx %c %s\n", &address, &type, sym) != 3 ) {
Syslog(LOG_ERR, "Error in symbol table input (#1).");
fclose(sym_file);
return(0);
@@ -228,8 +220,7 @@ extern int InitKsyms(char *mapfile)
if(dbgPrintSymbols)
dbgprintf("Address: %lx, Type: %c, Symbol: %s\n", address, type, sym);
- if ( AddSymbol(address, sym) == 0 )
- {
+ if ( AddSymbol(address, sym) == 0 ) {
Syslog(LOG_ERR, "Error adding symbol - %s.", sym);
fclose(sym_file);
return(0);
@@ -241,16 +232,14 @@ extern int InitKsyms(char *mapfile)
Syslog(LOG_INFO, "Loaded %d symbols from %s.", num_syms, mapfile);
- switch ( version )
- {
+ switch(version) {
case -1:
Syslog(LOG_WARNING, "Symbols do not match kernel version.");
num_syms = 0;
break;
case 0:
- Syslog(LOG_WARNING, "Cannot verify that symbols match " \
- "kernel version.");
+ Syslog(LOG_WARNING, "Cannot verify that symbols match kernel version.");
break;
case 1:
@@ -311,18 +300,16 @@ static char *FindSymbolFile(void)
auto FILE *sym_file = (FILE *) 0;
- if ( uname(&utsname) < 0 )
- {
+ if ( uname(&utsname) < 0 ) {
Syslog(LOG_ERR, "Cannot get kernel version information.");
return(0);
}
dbgprintf("Searching for symbol map.\n");
- for (mf = system_maps; *mf != (char *) 0 && file == (char *) 0; ++mf)
- {
+ for(mf = system_maps; *mf != (char *) 0 && file == (char *) 0; ++mf) {
- sprintf (symfile, "%s-%s", *mf, utsname.release);
+ snprintf(symfile, sizeof(symfile), "%s-%s", *mf, utsname.release);
dbgprintf("Trying %s.\n", symfile);
if ( (sym_file = fopen(symfile, "r")) != (FILE *) 0 ) {
if (CheckMapVersion(symfile) == 1)
@@ -341,10 +328,7 @@ static char *FindSymbolFile(void)
}
- /*
- * At this stage of the game we are at the end of the symbol
- * tables.
- */
+ /* At this stage of the game we are at the end of the symbol tables. */
dbgprintf("End of search list encountered.\n");
return(file);
}
@@ -407,8 +391,7 @@ static int CheckVersion(char *version)
return(0);
- /*
- * Since the symbol looks like a kernel version we can start
+ /* Since the symbol looks like a kernel version we can start
* things out by decoding the version string into its component
* parts.
*/
@@ -420,24 +403,20 @@ static int CheckVersion(char *version)
strlen(prefix), major, minor, patch);
sprintf(vstring, "%d.%d.%d", major, minor, patch);
- /*
- * We should now have the version string in the vstring variable in
+ /* We should now have the version string in the vstring variable in
* the same format that it is stored in by the kernel. We now
* ask the kernel for its version information and compare the two
* values to determine if our system map matches the kernel
* version level.
*/
- if ( uname(&utsname) < 0 )
- {
+ if ( uname(&utsname) < 0 ) {
Syslog(LOG_ERR, "Cannot get kernel version information.");
return(0);
}
dbgprintf("Comparing kernel %s with symbol table %s.\n", utsname.release, vstring);
- if ( sscanf (utsname.release, "%d.%d.%d", &major, &minor, &patch) < 3 )
- {
- Syslog(LOG_ERR, "Kernel send bogus release string `%s'.",
- utsname.release);
+ if ( sscanf (utsname.release, "%d.%d.%d", &major, &minor, &patch) < 3 ) {
+ Syslog(LOG_ERR, "Kernel send bogus release string `%s'.", utsname.release);
return(0);
}
@@ -494,11 +473,8 @@ static int CheckMapVersion(char *fname)
Syslog(LOG_INFO, "Inspecting %s", fname);
version = 0;
- while ( !feof(sym_file) && (version == 0) )
- {
- if ( fscanf(sym_file, "%lx %c %s\n", &address, \
- &type, sym) != 3 )
- {
+ while ( !feof(sym_file) && (version == 0) ) {
+ if ( fscanf(sym_file, "%lx %c %s\n", &address, &type, sym) != 3 ) {
Syslog(LOG_ERR, "Error in symbol table input (#2).");
fclose(sym_file);
return(0);
@@ -509,11 +485,9 @@ static int CheckMapVersion(char *fname)
}
fclose(sym_file);
- switch ( version )
- {
+ switch ( version ) {
case -1:
- Syslog(LOG_ERR, "Symbol table has incorrect " \
- "version number.\n");
+ Syslog(LOG_ERR, "Symbol table has incorrect version number.\n");
break;
case 0:
dbgprintf("No version information found.\n");
@@ -546,14 +520,13 @@ static int CheckMapVersion(char *fname)
static int AddSymbol(unsigned long address, char *symbol)
{
/* Allocate the the symbol table entry. */
- sym_array = (struct sym_table *) realloc(sym_array, (num_syms+1) * \
+ sym_array = (struct sym_table *) realloc(sym_array, (num_syms+1) *
sizeof(struct sym_table));
if ( sym_array == (struct sym_table *) 0 )
return(0);
/* Then the space for the symbol. */
- sym_array[num_syms].name = (char *) malloc(strlen(symbol)*sizeof(char)\
- + 1);
+ sym_array[num_syms].name = (char *) malloc(strlen(symbol)*sizeof(char) + 1);
if ( sym_array[num_syms].name == (char *) 0 )
return(0);
@@ -583,12 +556,7 @@ static int AddSymbol(unsigned long address, char *symbol)
* If a match is found the pointer to the symbolic name most
* closely matching the address is returned.
**************************************************************************/
-char * LookupSymbol(value, sym)
-
- unsigned long value;
-
- struct symbol *sym;
-
+char * LookupSymbol(unsigned long value, struct symbol *sym)
{
auto int lp;
@@ -606,10 +574,8 @@ char * LookupSymbol(value, sym)
if ( value < sym_array[0].value )
return((char *) 0);
- for(lp = 0; lp <= num_syms; ++lp)
- {
- if ( sym_array[lp].value > value )
- {
+ for(lp = 0; lp <= num_syms; ++lp) {
+ if ( sym_array[lp].value > value ) {
ksym.offset = value - sym_array[lp-1].value;
ksym.size = sym_array[lp].value - \
sym_array[lp-1].value;
@@ -620,20 +586,16 @@ char * LookupSymbol(value, sym)
name = LookupModuleSymbol(value, &msym);
- if ( ksym.offset == 0 && msym.offset == 0 )
- {
+ if ( ksym.offset == 0 && msym.offset == 0 ) {
return((char *) 0);
}
if ( ksym.offset == 0 || msym.offset < 0 ||
- (ksym.offset > 0 && ksym.offset < msym.offset) )
- {
+ (ksym.offset > 0 && ksym.offset < msym.offset) ) {
sym->offset = ksym.offset;
sym->size = ksym.size;
return(last);
- }
- else
- {
+ } else {
sym->offset = msym.offset;
sym->size = msym.size;
return(name);
@@ -730,12 +692,10 @@ extern char *ExpandKadds(char *line, char *el)
* messages in this line.
*/
if ( (num_syms == 0) ||
- (kp = strstr(line, "[<")) == (char *) 0 )
- {
+ (kp = strstr(line, "[<")) == (char *) 0 ) {
#ifdef __sparc__
if (num_syms) {
- /*
- * On SPARC, register dumps do not have the [< >] characters in it.
+ /* On SPARC, register dumps do not have the [< >] characters in it.
*/
static struct sparc_tests {
char *str;
@@ -815,14 +775,12 @@ extern char *ExpandKadds(char *line, char *el)
}
/* Loop through and expand all kernel messages. */
- do
- {
+ do {
while ( sl < kp+1 )
*elp++ = *sl++;
/* Now poised at a kernel delimiter. */
- if ( (kp = strstr(sl, ">]")) == (char *) 0 )
- {
+ if ( (kp = strstr(sl, ">]")) == (char *) 0 ) {
strcpy(el, sl);
return(el);
}
@@ -839,8 +797,7 @@ extern char *ExpandKadds(char *line, char *el)
(sym.size==0) ? symbol+1 : symbol, sym.offset, sym.size);
value = 2;
- if ( sym.size != 0 )
- {
+ if ( sym.size != 0 ) {
--value;
++kp;
elp += sprintf(elp, "+0x%x/0x%02x", sym.offset, sym.size);
@@ -871,7 +828,6 @@ extern char *ExpandKadds(char *line, char *el)
* present when resolving kernel exceptions.
* Return: void
**************************************************************************/
-
extern void SetParanoiaLevel(int level)
{
i_am_paranoid = level;
generated by cgit (git 2.34.1) at 2024-04-30 15:31:24 +0000