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add coprocess facility

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This commit is contained in:
Werner Koch 1998-07-31 16:45:58 +00:00
parent 0300d6aefc
commit 6fbee8ab86
10 changed files with 495 additions and 45 deletions
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85
g10/signal.c
View file

@ -35,40 +35,83 @@
#include "ttyio.h"
#if 0
static RETSIGTYPE
print_and_exit( int sig )
{
const char *p;
static volatile int caught_fatal_sig = 0;
static volatile int caught_sigusr1 = 0;
/* Hmm, use only safe functions (we should do an autoconf test) */
write( 2, "\nCaught ", 8 );
static const char *
signal_name( int signum )
{
#if SYS_SIGLIST_DECLARED
p = sys_siglist[sig];
write( 2, p, strlen(p) );
return sys_siglist[signum];
#else
write( 2, "a signal", 8 );
static char buf[20];
sprintf( "signal %d", signum );
return buf;
#endif
write( 2, "... exiting\n", 12 );
secmem_term();
exit(2); /* not correct but .. */
}
#endif
static RETSIGTYPE
got_fatal_signal( int sig )
{
if( caught_fatal_sig )
raise( sig );
caught_fatal_sig = 1;
fprintf( stderr, "\n%s: %s caught ... exiting\n",
log_get_name(), signal_name(sig) );
secmem_term();
exit( 2 );
}
static RETSIGTYPE
got_usr_signal( int sig )
{
caught_sigusr1 = 1;
}
static void
do_sigaction( int sig, struct sigaction *nact )
{
struct sigaction oact;
sigaction( sig, NULL, &oact );
if( oact.sa_handler != SIG_IGN )
sigaction( sig, nact, NULL);
}
void
init_signals()
{
#if 0
struct sigaction nact;
nact.sa_handler = print_and_exit;
sigemptyset (&nact.sa_mask);
nact.sa_handler = got_fatal_signal;
sigemptyset( &nact.sa_mask );
nact.sa_flags = 0;
sigaction( SIGINT, &nact, NULL );
sigaction( SIGHUP, &nact, NULL );
sigaction( SIGTERM, &nact, NULL );
#endif
do_sigaction( SIGINT, &nact );
do_sigaction( SIGHUP, &nact );
do_sigaction( SIGTERM, &nact );
do_sigaction( SIGQUIT, &nact );
nact.sa_handler = got_usr_signal;
sigaction( SIGUSR1, &nact, NULL );
}
void
pause_on_sigusr( int which )
{
sigset_t mask, oldmask;
assert( which == 1 );
sigemptyset( &mask );
sigaddset( &mask, SIGUSR1 );
sigprocmask( SIG_BLOCK, &mask, &oldmask );
while( !caught_sigusr1 )
sigsuspend( &oldmask );
caught_sigusr1 = 0;
sigprocmask( SIG_UNBLOCK, &mask, NULL );
}