Hi,
as ksh script like
#!/bin/ksh
echo starting ./testsig
./testsig
echo ending
does not ignore SIGINT but does exit. The bash and also all
bourne shell I know ignores as long the job ./testsig is
running which is that the jon its self receives the SIGINT.
To make this work correct with the ksh the scriptlet above
becomes
#!/bin/ksh
echo starting ./testsig
trap '' SIGINT
./testsig
trap - SIGINT
echo ending
... but why isn't that done by the ksh its self? Both ksh
scriplets can be called on the command line and interrupted
by Ctrl-C to send SIGINT from the keyboard. The first scriplet
ends and the ./testsig job runs in background, the second
scriplet ignores SIGINT.
Could it be that the flag set in shtab_signals[] for SIGINT is
missing the SH_SIGDONE bit? But even if added I do not see
how the signal could be suppressed in sh_fault() without
modifying the code.
Werner
--
Dr. Werner Fink <[EMAIL PROTECTED]>
SuSE LINUX Products GmbH, Maxfeldstrasse 5, Nuernberg, Germany
GF: Markus Rex, HRB 16746 (AG Nuernberg)
phone: +49-911-740-53-0, fax: +49-911-3206727, www.opensuse.org
------------------------------------------------------------------
"Having a smoking section in a restaurant is like having
a peeing section in a swimming pool." -- Edward Burr
#include <stdio.h>
#include <signal.h>
#include <unistd.h>
static char *me;
static void myhandler(int);
int main(int argc, char **argv)
{
struct sigaction act;
me = argv[0];
act.sa_handler = myhandler;
act.sa_flags = 0;
sigaction(SIGINT, &act, NULL);
while (1) {
sleep(1);
fprintf(stderr, ".");
}
return 0;
}
void myhandler(int x)
{
fprintf(stderr, "%s: Signal %d received.\n", me ? me : "testsig", x);
}
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