2 * 43BSD_SIGNAL.C - 4.3BSD compatibility signal syscalls
4 * Copyright (c) 1989, 1993
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40 * $DragonFly: src/sys/emulation/43bsd/43bsd_signal.c,v 1.5 2007/03/12 21:07:42 corecode 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>
58 #include <sys/thread2.h>
60 #define ONSIG 32 /* NSIG for osig* syscalls. XXX. */
62 #define SIG2OSIG(sig, osig) osig = (sig).__bits[0]
63 #define OSIG2SIG(osig, sig) SIGEMPTYSET(sig); (sig).__bits[0] = osig
65 #define SIGSETLO(set1, set2) ((set1).__bits[0] = (set2).__bits[0])
68 * These syscalls are unncessary because it is next to impossible to
69 * find 4.3BSD binaries built for i386. The current libc has routines
70 * which fake the 4.3BSD family of signal syscalls, so anything built
71 * from source won't be using these.
73 * This file is provided for educational purposes only. The osigvec()
74 * syscall is probably broken because the current signal code uses
75 * a different signal trampoline.
79 sys_osigvec(struct osigvec_args *uap)
82 struct sigaction nsa, osa;
83 struct sigaction *nsap, *osap;
86 if (uap->signum <= 0 || uap->signum >= ONSIG)
88 nsap = (uap->nsv != NULL) ? &nsa : NULL;
89 osap = (uap->osv != NULL) ? &osa : NULL;
91 error = copyin(uap->nsv, &vec, sizeof(vec));
94 nsap->sa_handler = vec.sv_handler;
95 OSIG2SIG(vec.sv_mask, nsap->sa_mask);
96 nsap->sa_flags = vec.sv_flags;
97 nsap->sa_flags ^= SA_RESTART; /* opposite of SV_INTERRUPT */
100 error = kern_sigaction(uap->signum, nsap, osap);
102 if (osap && !error) {
103 vec.sv_handler = osap->sa_handler;
104 SIG2OSIG(osap->sa_mask, vec.sv_mask);
105 vec.sv_flags = osap->sa_flags;
106 vec.sv_flags &= ~SA_NOCLDWAIT;
107 vec.sv_flags ^= SA_RESTART;
108 error = copyout(&vec, uap->osv, sizeof(vec));
114 sys_osigblock(struct osigblock_args *uap)
116 struct lwp *lp = curthread->td_lwp;
119 OSIG2SIG(uap->mask, set);
122 SIG2OSIG(lp->lwp_sigmask, uap->sysmsg_result);
123 SIGSETOR(lp->lwp_sigmask, set);
129 sys_osigsetmask(struct osigsetmask_args *uap)
131 struct lwp *lp = curthread->td_lwp;
134 OSIG2SIG(uap->mask, set);
137 SIG2OSIG(lp->lwp_sigmask, uap->sysmsg_result);
138 SIGSETLO(lp->lwp_sigmask, set);
144 sys_osigstack(struct osigstack_args *uap)
146 struct lwp *lp = curthread->td_lwp;
150 ss.ss_sp = lp->lwp_sigstk.ss_sp;
151 ss.ss_onstack = lp->lwp_sigstk.ss_flags & SS_ONSTACK;
152 if (uap->oss && (error = copyout(&ss, uap->oss,
153 sizeof(struct sigstack))))
155 if (uap->nss && (error = copyin(uap->nss, &ss, sizeof(ss))) == 0) {
156 lp->lwp_sigstk.ss_sp = ss.ss_sp;
157 lp->lwp_sigstk.ss_size = 0;
158 lp->lwp_sigstk.ss_flags |= ss.ss_onstack & SS_ONSTACK;
159 lp->lwp_flag |= LWP_ALTSTACK;
165 sys_okillpg(struct okillpg_args *uap)
169 error = kern_kill(uap->signum, -uap->pgid, -1);