diff options
Diffstat (limited to 'lib/util')
| -rw-r--r-- | lib/util/fault_s4.c | 236 | ||||
| -rwxr-xr-x | lib/util/wscript_build | 2 |
2 files changed, 1 insertions, 237 deletions
diff --git a/lib/util/fault_s4.c b/lib/util/fault_s4.c deleted file mode 100644 index 0f902b4f84..0000000000 --- a/lib/util/fault_s4.c +++ /dev/null @@ -1,236 +0,0 @@ -/* - Unix SMB/CIFS implementation. - Critical Fault handling - Copyright (C) Andrew Tridgell 1992-1998 - - 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 3 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, see <http://www.gnu.org/licenses/>. -*/ - -#include "includes.h" -#include "version.h" -#include "system/wait.h" -#include "system/filesys.h" - -/** - * @file - * @brief Fault handling - */ - -/* the registered fault handler */ -static struct { - const char *name; - void (*fault_handler)(int sig); -} fault_handlers; - -static const char *progname; - -#ifdef HAVE_BACKTRACE -#include <execinfo.h> -#elif HAVE_LIBEXC_H -#include <libexc.h> -#endif - -/** - * Write backtrace to debug log - */ -_PUBLIC_ void call_backtrace(void) -{ -#ifdef HAVE_BACKTRACE -#ifndef BACKTRACE_STACK_SIZE -#define BACKTRACE_STACK_SIZE 64 -#endif - void *backtrace_stack[BACKTRACE_STACK_SIZE]; - int backtrace_size; - char **backtrace_strings; - - /* get the backtrace (stack frames) */ - backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE); - backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size); - - DEBUG(0, ("BACKTRACE: %lu stack frames:\n", - (unsigned long)backtrace_size)); - - if (backtrace_strings) { - int i; - - for (i = 0; i < backtrace_size; i++) - DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i])); - - /* Leak the backtrace_strings, rather than risk what free() might do */ - } - -#elif HAVE_LIBEXC - -#define NAMESIZE 32 /* Arbitrary */ -#ifndef BACKTRACE_STACK_SIZE -#define BACKTRACE_STACK_SIZE 64 -#endif - - /* The IRIX libexc library provides an API for unwinding the stack. See - * libexc(3) for details. Apparantly trace_back_stack leaks memory, but - * since we are about to abort anyway, it hardly matters. - * - * Note that if we paniced due to a SIGSEGV or SIGBUS (or similar) this - * will fail with a nasty message upon failing to open the /proc entry. - */ - { - uint64_t addrs[BACKTRACE_STACK_SIZE]; - char * names[BACKTRACE_STACK_SIZE]; - char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE]; - - int i; - int levels; - - ZERO_ARRAY(addrs); - ZERO_ARRAY(names); - ZERO_ARRAY(namebuf); - - for (i = 0; i < BACKTRACE_STACK_SIZE; i++) { - names[i] = namebuf + (i * NAMESIZE); - } - - levels = trace_back_stack(0, addrs, names, - BACKTRACE_STACK_SIZE, NAMESIZE); - - DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels)); - for (i = 0; i < levels; i++) { - DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i])); - } - } -#undef NAMESIZE -#endif -} - -_PUBLIC_ const char *panic_action = NULL; - -/** - Something really nasty happened - panic ! -**/ -_PUBLIC_ _NORETURN_ void smb_panic(const char *why) -{ - int result; - - if (panic_action && *panic_action) { - char pidstr[20]; - char cmdstring[200]; - safe_strcpy(cmdstring, panic_action, sizeof(cmdstring)); - snprintf(pidstr, sizeof(pidstr), "%d", (int) getpid()); - all_string_sub(cmdstring, "%PID%", pidstr, sizeof(cmdstring)); - if (progname) { - all_string_sub(cmdstring, "%PROG%", progname, sizeof(cmdstring)); - } - DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmdstring)); - result = system(cmdstring); - - if (result == -1) - DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n", - strerror(errno))); - else - DEBUG(0, ("smb_panic(): action returned status %d\n", - WEXITSTATUS(result))); - } - DEBUG(0,("PANIC: %s\n", why)); - - call_backtrace(); - -#ifdef SIGABRT - CatchSignal(SIGABRT, SIG_DFL); -#endif - abort(); -} - -/** -report a fault -**/ -_NORETURN_ static void fault_report(int sig) -{ - static int counter; - - if (counter) _exit(1); - - DEBUG(0,("=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n")); - DEBUG(0,("INTERNAL ERROR: Signal %d in pid %d (%s)",sig,(int)getpid(),SAMBA_VERSION_STRING)); - DEBUG(0,("\nPlease read the file BUGS.txt in the distribution\n")); - DEBUG(0,("=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n")); - - smb_panic("internal error"); - - exit(1); -} - -/** -catch serious errors -**/ -_NORETURN_ static void sig_fault(int sig) -{ - if (fault_handlers.fault_handler) { - /* we have a fault handler, call it. It may not return. */ - fault_handlers.fault_handler(sig); - } - /* If it returns or doesn't exist, use regular reporter */ - fault_report(sig); -} - -/** -setup our fault handlers -**/ -_PUBLIC_ void fault_setup(const char *pname) -{ - if (progname != NULL) { - return; - } - progname = pname; -#ifdef SIGSEGV - CatchSignal(SIGSEGV, sig_fault); -#endif -#ifdef SIGBUS - CatchSignal(SIGBUS, sig_fault); -#endif -#ifdef SIGABRT - CatchSignal(SIGABRT, sig_fault); -#endif -#ifdef SIGFPE - CatchSignal(SIGFPE, sig_fault); -#endif -} - -/** - disable setting up fault handlers -**/ -_PUBLIC_ void fault_setup_disable(void) -{ - progname = "fault disabled"; -} - - -/** - register a fault handler. - Should only be called once in the execution of smbd. -*/ -_PUBLIC_ bool register_fault_handler(const char *name, - void (*fault_handler)(int sig)) -{ - if (fault_handlers.name != NULL) { - /* it's already registered! */ - DEBUG(2,("fault handler '%s' already registered - failed '%s'\n", - fault_handlers.name, name)); - return false; - } - - fault_handlers.name = name; - fault_handlers.fault_handler = fault_handler; - - DEBUG(2,("fault handler '%s' registered\n", name)); - return true; -} diff --git a/lib/util/wscript_build b/lib/util/wscript_build index 8cbb8bb893..7c18075faa 100755 --- a/lib/util/wscript_build +++ b/lib/util/wscript_build @@ -20,7 +20,7 @@ bld.SAMBA_LIBRARY('samba-util-common', if bld.env._SAMBA_BUILD_ == 4: bld.SAMBA_LIBRARY('samba-util', - source='''dprintf.c fault_s4.c data_blob.c + source='''dprintf.c fault.c data_blob.c ms_fnmatch.c parmlist.c substitute.c util_str.c ''', deps='samba-util-common', |