2 * 43BSD_SIGNAL.C - 4.3BSD compatibility signal syscalls
4 * Copyright (c) 1989, 1993
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22 * This product includes software developed by the University of
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40 * $DragonFly: src/sys/emulation/43bsd/43bsd_signal.c,v 1.1 2003/10/24 14:10:45 daver Exp $
41 * from: DragonFly kern/kern_sig.c,v 1.22
43 * These syscalls used to live in kern/kern_sig.c. They are modified
44 * to use the new split syscalls.
47 #include "opt_compat.h"
49 #include <sys/param.h>
50 #include <sys/systm.h>
51 #include <sys/sysproto.h>
53 #include <sys/kernel.h>
54 #include <sys/kern_syscall.h>
56 #include <sys/signal.h>
57 #include <sys/signalvar.h>
59 #define ONSIG 32 /* NSIG for osig* syscalls. XXX. */
61 #define SIG2OSIG(sig, osig) osig = (sig).__bits[0]
62 #define OSIG2SIG(osig, sig) SIGEMPTYSET(sig); (sig).__bits[0] = osig
64 #define SIGSETLO(set1, set2) ((set1).__bits[0] = (set2).__bits[0])
67 * These syscalls are unncessary because it is next to impossible to
68 * find 4.3BSD binaries built for i386. The current libc has routines
69 * which fake the 4.3BSD family of signal syscalls, so anything built
70 * from source won't be using these.
72 * This file is provided for educational purposes only. The osigvec()
73 * syscall is probably broken because the current signal code uses
74 * a different signal trampoline.
78 osigvec(struct osigvec_args *uap)
81 struct sigaction nsa, osa;
82 struct sigaction *nsap, *osap;
85 if (uap->signum <= 0 || uap->signum >= ONSIG)
87 nsap = (uap->nsv != NULL) ? &nsa : NULL;
88 osap = (uap->osv != NULL) ? &osa : NULL;
90 error = copyin(uap->nsv, &vec, sizeof(vec));
93 nsap->sa_handler = vec.sv_handler;
94 OSIG2SIG(vec.sv_mask, nsap->sa_mask);
95 nsap->sa_flags = vec.sv_flags;
96 nsap->sa_flags ^= SA_RESTART; /* opposite of SV_INTERRUPT */
99 error = kern_sigaction(uap->signum, nsap, osap);
101 if (osap && !error) {
102 vec.sv_handler = osap->sa_handler;
103 SIG2OSIG(osap->sa_mask, vec.sv_mask);
104 vec.sv_flags = osap->sa_flags;
105 vec.sv_flags &= ~SA_NOCLDWAIT;
106 vec.sv_flags ^= SA_RESTART;
107 error = copyout(&vec, uap->osv, sizeof(vec));
113 osigblock(struct osigblock_args *uap)
115 struct proc *p = curproc;
118 OSIG2SIG(uap->mask, set);
121 SIG2OSIG(p->p_sigmask, uap->sysmsg_result);
122 SIGSETOR(p->p_sigmask, set);
128 osigsetmask(struct osigsetmask_args *uap)
130 struct proc *p = curproc;
133 OSIG2SIG(uap->mask, set);
136 SIG2OSIG(p->p_sigmask, uap->sysmsg_result);
137 SIGSETLO(p->p_sigmask, set);
143 osigstack(struct osigstack_args *uap)
145 struct proc *p = curproc;
149 ss.ss_sp = p->p_sigstk.ss_sp;
150 ss.ss_onstack = p->p_sigstk.ss_flags & SS_ONSTACK;
151 if (uap->oss && (error = copyout(&ss, uap->oss,
152 sizeof(struct sigstack))))
154 if (uap->nss && (error = copyin(uap->nss, &ss, sizeof(ss))) == 0) {
155 p->p_sigstk.ss_sp = ss.ss_sp;
156 p->p_sigstk.ss_size = 0;
157 p->p_sigstk.ss_flags |= ss.ss_onstack & SS_ONSTACK;
158 p->p_flag |= P_ALTSTACK;
164 okillpg(struct okillpg_args *uap)
168 error = kern_kill(uap->signum, -uap->pgid);