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2005-01-122005-01-12 Andrew J. Schorr <ajschorr@alumni.princeton.edu>ajs
* configure.ac: Test for header file <ucontext.h> (for use in signal processing). * sigevent.c: (trap_default_signals) Use the SA_SIGINFO flag to pass additional siginfo_t and ucontext_t arguments to core_handler and exit_handler. (core_handler,exit_handler) Now invoked with 3 arguments (using SA_SIGINFO). Pass additional info to zlog_signal. (program_counter) New function to find program counter in ucontext_t, needs to be enhanced to support more platforms (currently works only on Linux/x86). * log.h: Change the zlog_signal prototype to add new arguments siginfo_t * and program_counter. * log.c: (zlog_signal) Add new arguments siginfo and program_counter. Include si_addr and program counter (if non-NULL) in message. And remove #ifdef HAVE_GLIBC_BACKTRACE around hex_append, since that is now used to render the si_addr and PC pointers.
2004-12-152004-12-15 Andrew J. Schorr <ajschorr@alumni.princeton.edu>ajs
* sigevent.c: (trap_default_signals) Ignore SIGPIPE instead of exiting.
2004-11-232004-11-23 Andrew J. Schorr <ajschorr@alumni.princeton.edu>ajs
* sigevent.c: (signal_init) Set up some default signal handlers so that processes will issue an error message before terminating or dumping core. (trap_default_signals) New function to set up signal handlers for various signals that may kill the process. (exit_handler) Call zlog_signal, then _exit. (core_handler) Call zlog_signal, then abort. * log.h: Declare new function zlog_signal. * log.c: (zlog_signal) New function to log information about a received signal before the process dies. Try to log a backtrace also. (quagga_signal_handler,signal_set) Should be static.
2004-07-222004-07-14 Paul Jakma <paul@dishone.st>paul
* sigevent.c: (quagga_signal_handler) add a global caught flag, set the flags to a constant rather increment to be kinder. (quagga_sigevent_process) new function, to do core of what quagga_signal_timer did. dont block signals at all as sig->caught is volatile sig_atomic_t and should be safe to access from signal and normal contexts. The signal blocking is unneeded paranoia, but is left intact under an ifdef, should some platform require it. Check global caught flag before iterating through array. (quagga_signal_timer) nearly everything moved to quagga_sigevent_process. Left in under ifdef, in case some platform could use a regular timer check for signals. * sigevent.h: quagga_sigevent_process declaration. * thread.c: (thread_fetch) check for signals at beginning of scheduler loop, check for signals if select returns EINTR.
2004-07-132004-07-13 Greg Troxel <gdt@poblano.ir.bbn.com>gdt
* sigevent.c: Don't block SIGTRAP and SIGKILL. Blocking SIGTRAP confuses gdb, at least on NetBSD 2.0_BETA, where the block succeeds.
2004-01-192004-01-19 Paul Jakma <paul@dishone.st>paul
* sigevent.{c,h}: New files, implement event handled signals. see signal_init() in sigevent.h.