Date: Wed, 4 Dec 1996 21:07:32 -0300 (ARST) From: Miguel Angel Sagreras <msagre@cactus.fi.uba.ar> To: emulation@freebsd.org Cc: freebsd-hackers@freebsd.org Subject: Running ORACLE 7.2.2.4 on FreeBSD 2.2-SNAP Message-ID: <Pine.BSF.3.91.961204210556.15105D-100000@cactus.fi.uba.ar>
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To get ORACLE 7.2.2.4 for SCO running on FreeBSD 2.2-961014-SNAP, I have to
modify two system call in the IBCS2 emulator. The first one was
the system call ulimit, it returns -1 on type conversion between
the 64 bits in the FreeBSD ffs and 32 bits type SCO fs causing
ORACLE exit. The second one was signal system call, I had to mask
IBCS2_..._MASK in it, I haven't IBCS2 reference manual, to modify
the source to get the rigth code.
To see the signal systemcall problem. I run the SCO binary of the
next program.
#include <stdio.h>
#include <signal.h>
#include <unistd.h>
#include <sys/ipc.h>
#include <sys/sem.h>
int sid;
struct sembuf sb;
int time;
void sigalarm (int id)
{
signal (0x100|SIGALRM, sigalarm);
alarm (1);
printf ("%d %s\n",time+1, (time) ? "times" : "time");
time++;
semop (sid, &sb, 1);
}
main ()
{
sid = semget (1234, 5, IPC_CREAT|0666);
sb.sem_num = 1;
sb.sem_op = -1;
sb.sem_flg = 0;
signal (0x100|SIGALRM, sigalarm);
alarm (1);
semop (sid, &sb, 1);
return 0;
}
When I run it on SCO, I got this output.
1 time
2 times
3 times
4 times
....
But when I run in FreeBSD, I got only this.
1 time
Here, you have the modification I did.
In file ibcs2_misc.c function ibcs2_ulimit
case IBCS2_GETFSIZE:
*retval = p->p_rlimit[RLIMIT_FSIZE].rlim_cur;
if (*retval == -1) (*retval)--;
return 0;
In ibcs2_signal.c function ibcs2_sigsys
int ibcs2_sigsys(p, uap, retval)
register struct proc *p;
struct ibcs2_sigsys_args *uap;
int *retval;
{ struct sigaction sa;
int signum;
int error;
caddr_t sg = stackgap_init();
uap->sig &= 0xff;
signum = ibcs2_to_bsd_sig[IBCS2_SIGNO(SCARG(uap, sig))];
Miguel A. Sagreras
Facultad de ingenieria
Universidad de Buenos Aires
e-mail : msagre@cactus.fi.uba.ar
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