#line 23 "trap.def"
#line 42 "trap.def"
#include <config.h>
#if defined (HAVE_UNISTD_H)
# ifdef _MINIX
# include <sys/types.h>
# endif
# include <unistd.h>
#endif
#include "../bashtypes.h"
#include <signal.h>
#include <stdio.h>
#include "../bashansi.h"
#include "../shell.h"
#include "../trap.h"
#include "common.h"
#include "bashgetopt.h"
static void showtrap __P((int));
static int display_traps __P((WORD_LIST *));
#define SET 0
#define REVERT 1
#define IGNORE 2
extern int posixly_correct;
int
trap_builtin (list)
WORD_LIST *list;
{
int list_signal_names, display, result, opt;
list_signal_names = display = 0;
result = EXECUTION_SUCCESS;
reset_internal_getopt ();
while ((opt = internal_getopt (list, "lp")) != -1)
{
switch (opt)
{
case 'l':
list_signal_names++;
break;
case 'p':
display++;
break;
default:
builtin_usage ();
return (EX_USAGE);
}
}
list = loptend;
opt = DSIG_NOCASE|DSIG_SIGPREFIX;
if (list_signal_names)
return (display_signal_list ((WORD_LIST *)NULL, 1));
else if (display || list == 0)
return (display_traps (list));
else
{
char *first_arg;
int operation, sig, first_signal;
operation = SET;
first_arg = list->word->word;
first_signal = first_arg && *first_arg && all_digits (first_arg) && signal_object_p (first_arg, opt);
if (first_signal)
operation = REVERT;
else if (posixly_correct == 0 && first_arg && *first_arg &&
(*first_arg != '-' || first_arg[1]) &&
signal_object_p (first_arg, opt) && list->next == 0)
operation = REVERT;
else
{
list = list->next;
if (list == 0)
{
builtin_usage ();
return (EX_USAGE);
}
else if (*first_arg == '\0')
operation = IGNORE;
else if (first_arg[0] == '-' && !first_arg[1])
operation = REVERT;
}
while (list)
{
sig = decode_signal (list->word->word, opt);
if (sig == NO_SIG)
{
sh_invalidsig (list->word->word);
result = EXECUTION_FAILURE;
}
else
{
switch (operation)
{
case SET:
set_signal (sig, first_arg);
break;
case REVERT:
restore_default_signal (sig);
switch (sig)
{
case SIGINT:
if (interactive)
set_signal_handler (SIGINT, sigint_sighandler);
else
set_signal_handler (SIGINT, termsig_sighandler);
break;
case SIGQUIT:
set_signal_handler (SIGQUIT, SIG_IGN);
break;
case SIGTERM:
#if defined (JOB_CONTROL)
case SIGTTIN:
case SIGTTOU:
case SIGTSTP:
#endif
if (interactive)
set_signal_handler (sig, SIG_IGN);
break;
}
break;
case IGNORE:
ignore_signal (sig);
break;
}
}
list = list->next;
}
}
return (result);
}
static void
showtrap (i)
int i;
{
char *t, *p, *sn;
p = trap_list[i];
if (p == (char *)DEFAULT_SIG)
return;
t = (p == (char *)IGNORE_SIG) ? (char *)NULL : sh_single_quote (p);
sn = signal_name (i);
if (STREQN (sn, "SIGJUNK", 7) || STREQN (sn, "unknown", 7))
printf ("trap -- %s %d\n", t ? t : "''", i);
else if (posixly_correct)
{
if (STREQN (sn, "SIG", 3))
printf ("trap -- %s %s\n", t ? t : "''", sn+3);
else
printf ("trap -- %s %s\n", t ? t : "''", sn);
}
else
printf ("trap -- %s %s\n", t ? t : "''", sn);
FREE (t);
}
static int
display_traps (list)
WORD_LIST *list;
{
int result, i;
if (list == 0)
{
for (i = 0; i < BASH_NSIG; i++)
showtrap (i);
return (EXECUTION_SUCCESS);
}
for (result = EXECUTION_SUCCESS; list; list = list->next)
{
i = decode_signal (list->word->word, DSIG_NOCASE|DSIG_SIGPREFIX);
if (i == NO_SIG)
{
sh_invalidsig (list->word->word);
result = EXECUTION_FAILURE;
}
else
showtrap (i);
}
return (result);
}