diff options
Diffstat (limited to 'sys/compat/linux/linux_signal.c')
| -rw-r--r-- | sys/compat/linux/linux_signal.c | 348 |
1 files changed, 229 insertions, 119 deletions
diff --git a/sys/compat/linux/linux_signal.c b/sys/compat/linux/linux_signal.c index 1c778f9..0ecf537 100644 --- a/sys/compat/linux/linux_signal.c +++ b/sys/compat/linux/linux_signal.c @@ -53,40 +53,12 @@ __FBSDID("$FreeBSD$"); #include <compat/linux/linux_signal.h> #include <compat/linux/linux_util.h> #include <compat/linux/linux_emul.h> +#include <compat/linux/linux_misc.h> -void -linux_to_bsd_sigset(l_sigset_t *lss, sigset_t *bss) -{ - int b, l; - - SIGEMPTYSET(*bss); - bss->__bits[0] = lss->__bits[0] & ~((1U << LINUX_SIGTBLSZ) - 1); - bss->__bits[1] = lss->__bits[1]; - for (l = 1; l <= LINUX_SIGTBLSZ; l++) { - if (LINUX_SIGISMEMBER(*lss, l)) { - b = linux_to_bsd_signal[_SIG_IDX(l)]; - if (b) - SIGADDSET(*bss, b); - } - } -} +static int linux_do_tkill(struct thread *td, struct thread *tdt, + ksiginfo_t *ksi); +static void sicode_to_lsicode(int si_code, int *lsi_code); -void -bsd_to_linux_sigset(sigset_t *bss, l_sigset_t *lss) -{ - int b, l; - - LINUX_SIGEMPTYSET(*lss); - lss->__bits[0] = bss->__bits[0] & ~((1U << LINUX_SIGTBLSZ) - 1); - lss->__bits[1] = bss->__bits[1]; - for (b = 1; b <= LINUX_SIGTBLSZ; b++) { - if (SIGISMEMBER(*bss, b)) { - l = bsd_to_linux_signal[_SIG_IDX(b)]; - if (l) - LINUX_SIGADDSET(*lss, l); - } - } -} static void linux_to_bsd_sigaction(l_sigaction_t *lsa, struct sigaction *bsa) @@ -155,11 +127,7 @@ linux_do_sigaction(struct thread *td, int linux_sig, l_sigaction_t *linux_nsa, linux_to_bsd_sigaction(linux_nsa, nsa); } else nsa = NULL; - - if (linux_sig <= LINUX_SIGTBLSZ) - sig = linux_to_bsd_signal[_SIG_IDX(linux_sig)]; - else - sig = linux_sig; + sig = linux_to_bsd_signal(linux_sig); error = kern_sigaction(td, sig, nsa, osa, 0); if (error) @@ -171,7 +139,7 @@ linux_do_sigaction(struct thread *td, int linux_sig, l_sigaction_t *linux_nsa, return (0); } - +#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) int linux_signal(struct thread *td, struct linux_signal_args *args) { @@ -193,6 +161,7 @@ linux_signal(struct thread *td, struct linux_signal_args *args) return (error); } +#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ int linux_rt_sigaction(struct thread *td, struct linux_rt_sigaction_args *args) @@ -262,6 +231,7 @@ linux_do_sigprocmask(struct thread *td, int how, l_sigset_t *new, return (error); } +#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) int linux_sigprocmask(struct thread *td, struct linux_sigprocmask_args *args) { @@ -279,7 +249,7 @@ linux_sigprocmask(struct thread *td, struct linux_sigprocmask_args *args) if (error) return (error); LINUX_SIGEMPTYSET(set); - set.__bits[0] = mask; + set.__mask = mask; } error = linux_do_sigprocmask(td, args->how, @@ -287,12 +257,13 @@ linux_sigprocmask(struct thread *td, struct linux_sigprocmask_args *args) args->omask ? &oset : NULL); if (args->omask != NULL && !error) { - mask = oset.__bits[0]; + mask = oset.__mask; error = copyout(&mask, args->omask, sizeof(l_osigset_t)); } return (error); } +#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ int linux_rt_sigprocmask(struct thread *td, struct linux_rt_sigprocmask_args *args) @@ -327,6 +298,7 @@ linux_rt_sigprocmask(struct thread *td, struct linux_rt_sigprocmask_args *args) return (error); } +#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) int linux_sgetmask(struct thread *td, struct linux_sgetmask_args *args) { @@ -341,7 +313,7 @@ linux_sgetmask(struct thread *td, struct linux_sgetmask_args *args) PROC_LOCK(p); bsd_to_linux_sigset(&td->td_sigmask, &mask); PROC_UNLOCK(p); - td->td_retval[0] = mask.__bits[0]; + td->td_retval[0] = mask.__mask; return (0); } @@ -359,9 +331,9 @@ linux_ssetmask(struct thread *td, struct linux_ssetmask_args *args) PROC_LOCK(p); bsd_to_linux_sigset(&td->td_sigmask, &lset); - td->td_retval[0] = lset.__bits[0]; + td->td_retval[0] = lset.__mask; LINUX_SIGEMPTYSET(lset); - lset.__bits[0] = args->mask; + lset.__mask = args->mask; linux_to_bsd_sigset(&lset, &bset); td->td_sigmask = bset; SIG_CANTMASK(td->td_sigmask); @@ -370,9 +342,6 @@ linux_ssetmask(struct thread *td, struct linux_ssetmask_args *args) return (0); } -/* - * MPSAFE - */ int linux_sigpending(struct thread *td, struct linux_sigpending_args *args) { @@ -392,9 +361,10 @@ linux_sigpending(struct thread *td, struct linux_sigpending_args *args) SIGSETAND(bset, td->td_sigmask); PROC_UNLOCK(p); bsd_to_linux_sigset(&bset, &lset); - mask = lset.__bits[0]; + mask = lset.__mask; return (copyout(&mask, args->mask, sizeof(mask))); } +#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ /* * MPSAFE @@ -458,8 +428,8 @@ linux_rt_sigtimedwait(struct thread *td, #ifdef DEBUG if (ldebug(rt_sigtimedwait)) printf(LMSG("linux_rt_sigtimedwait: " - "incoming timeout (%d/%d)\n"), - ltv.tv_sec, ltv.tv_usec); + "incoming timeout (%jd/%jd)\n"), + (intmax_t)ltv.tv_sec, (intmax_t)ltv.tv_usec); #endif tv.tv_sec = (long)ltv.tv_sec; tv.tv_usec = (suseconds_t)ltv.tv_usec; @@ -495,7 +465,7 @@ linux_rt_sigtimedwait(struct thread *td, if (error) return (error); - sig = BSD_TO_LINUX_SIGNAL(info.ksi_signo); + sig = bsd_to_linux_signal(info.ksi_signo); if (args->ptr) { memset(&linfo, 0, sizeof(linfo)); @@ -527,66 +497,31 @@ linux_kill(struct thread *td, struct linux_kill_args *args) if (!LINUX_SIG_VALID(args->signum) && args->signum != 0) return (EINVAL); - if (args->signum > 0 && args->signum <= LINUX_SIGTBLSZ) - tmp.signum = linux_to_bsd_signal[_SIG_IDX(args->signum)]; + if (args->signum > 0) + tmp.signum = linux_to_bsd_signal(args->signum); else - tmp.signum = args->signum; + tmp.signum = 0; tmp.pid = args->pid; return (sys_kill(td, &tmp)); } static int -linux_do_tkill(struct thread *td, l_int tgid, l_int pid, l_int signum) +linux_do_tkill(struct thread *td, struct thread *tdt, ksiginfo_t *ksi) { - struct proc *proc = td->td_proc; - struct linux_emuldata *em; struct proc *p; - ksiginfo_t ksi; int error; - AUDIT_ARG_SIGNUM(signum); - AUDIT_ARG_PID(pid); - - /* - * Allow signal 0 as a means to check for privileges - */ - if (!LINUX_SIG_VALID(signum) && signum != 0) - return (EINVAL); - - if (signum > 0 && signum <= LINUX_SIGTBLSZ) - signum = linux_to_bsd_signal[_SIG_IDX(signum)]; - - if ((p = pfind(pid)) == NULL) { - if ((p = zpfind(pid)) == NULL) - return (ESRCH); - } - + p = tdt->td_proc; + AUDIT_ARG_SIGNUM(ksi->ksi_signo); + AUDIT_ARG_PID(p->p_pid); AUDIT_ARG_PROCESS(p); - error = p_cansignal(td, p, signum); - if (error != 0 || signum == 0) - goto out; - - error = ESRCH; - em = em_find(p, EMUL_DONTLOCK); - if (em == NULL) { -#ifdef DEBUG - printf("emuldata not found in do_tkill.\n"); -#endif + error = p_cansignal(td, p, ksi->ksi_signo); + if (error != 0 || ksi->ksi_signo == 0) goto out; - } - if (tgid > 0 && em->shared->group_pid != tgid) - goto out; - - ksiginfo_init(&ksi); - ksi.ksi_signo = signum; - ksi.ksi_code = LINUX_SI_TKILL; - ksi.ksi_errno = 0; - ksi.ksi_pid = proc->p_pid; - ksi.ksi_uid = proc->p_ucred->cr_ruid; - error = pksignal(p, ksi.ksi_signo, &ksi); + tdksignal(tdt, ksi->ksi_signo, ksi); out: PROC_UNLOCK(p); @@ -596,20 +531,53 @@ out: int linux_tgkill(struct thread *td, struct linux_tgkill_args *args) { + struct thread *tdt; + ksiginfo_t ksi; + int sig; #ifdef DEBUG if (ldebug(tgkill)) - printf(ARGS(tgkill, "%d, %d, %d"), args->tgid, args->pid, args->sig); + printf(ARGS(tgkill, "%d, %d, %d"), + args->tgid, args->pid, args->sig); #endif + if (args->pid <= 0 || args->tgid <=0) return (EINVAL); - return (linux_do_tkill(td, args->tgid, args->pid, args->sig)); + /* + * Allow signal 0 as a means to check for privileges + */ + if (!LINUX_SIG_VALID(args->sig) && args->sig != 0) + return (EINVAL); + + if (args->sig > 0) + sig = linux_to_bsd_signal(args->sig); + else + sig = 0; + + tdt = linux_tdfind(td, args->pid, args->tgid); + if (tdt == NULL) + return (ESRCH); + + ksiginfo_init(&ksi); + ksi.ksi_signo = sig; + ksi.ksi_code = SI_LWP; + ksi.ksi_errno = 0; + ksi.ksi_pid = td->td_proc->p_pid; + ksi.ksi_uid = td->td_proc->p_ucred->cr_ruid; + return (linux_do_tkill(td, tdt, &ksi)); } +/* + * Deprecated since 2.5.75. Replaced by tgkill(). + */ int linux_tkill(struct thread *td, struct linux_tkill_args *args) { + struct thread *tdt; + ksiginfo_t ksi; + int sig; + #ifdef DEBUG if (ldebug(tkill)) printf(ARGS(tkill, "%i, %i"), args->tid, args->sig); @@ -617,40 +585,182 @@ linux_tkill(struct thread *td, struct linux_tkill_args *args) if (args->tid <= 0) return (EINVAL); - return (linux_do_tkill(td, 0, args->tid, args->sig)); + if (!LINUX_SIG_VALID(args->sig)) + return (EINVAL); + + sig = linux_to_bsd_signal(args->sig); + + tdt = linux_tdfind(td, args->tid, -1); + if (tdt == NULL) + return (ESRCH); + + ksiginfo_init(&ksi); + ksi.ksi_signo = sig; + ksi.ksi_code = SI_LWP; + ksi.ksi_errno = 0; + ksi.ksi_pid = td->td_proc->p_pid; + ksi.ksi_uid = td->td_proc->p_ucred->cr_ruid; + return (linux_do_tkill(td, tdt, &ksi)); +} + +void +ksiginfo_to_lsiginfo(const ksiginfo_t *ksi, l_siginfo_t *lsi, l_int sig) +{ + + siginfo_to_lsiginfo(&ksi->ksi_info, lsi, sig); +} + +static void +sicode_to_lsicode(int si_code, int *lsi_code) +{ + + switch (si_code) { + case SI_USER: + *lsi_code = LINUX_SI_USER; + break; + case SI_KERNEL: + *lsi_code = LINUX_SI_KERNEL; + break; + case SI_QUEUE: + *lsi_code = LINUX_SI_QUEUE; + break; + case SI_TIMER: + *lsi_code = LINUX_SI_TIMER; + break; + case SI_MESGQ: + *lsi_code = LINUX_SI_MESGQ; + break; + case SI_ASYNCIO: + *lsi_code = LINUX_SI_ASYNCIO; + break; + case SI_LWP: + *lsi_code = LINUX_SI_TKILL; + break; + default: + *lsi_code = si_code; + break; + } } void -ksiginfo_to_lsiginfo(ksiginfo_t *ksi, l_siginfo_t *lsi, l_int sig) +siginfo_to_lsiginfo(const siginfo_t *si, l_siginfo_t *lsi, l_int sig) { + /* sig alredy converted */ lsi->lsi_signo = sig; - lsi->lsi_code = ksi->ksi_code; + sicode_to_lsicode(si->si_code, &lsi->lsi_code); - switch (sig) { - case LINUX_SIGPOLL: - /* XXX si_fd? */ - lsi->lsi_band = ksi->ksi_band; + switch (si->si_code) { + case SI_LWP: + lsi->lsi_pid = si->si_pid; + lsi->lsi_uid = si->si_uid; break; - case LINUX_SIGCHLD: - lsi->lsi_pid = ksi->ksi_pid; - lsi->lsi_uid = ksi->ksi_uid; - lsi->lsi_status = ksi->ksi_status; + + case SI_TIMER: + lsi->lsi_int = si->si_value.sival_int; + lsi->lsi_ptr = PTROUT(si->si_value.sival_ptr); + lsi->lsi_tid = si->si_timerid; break; - case LINUX_SIGBUS: - case LINUX_SIGILL: - case LINUX_SIGFPE: - case LINUX_SIGSEGV: - lsi->lsi_addr = PTROUT(ksi->ksi_addr); + + case SI_QUEUE: + lsi->lsi_pid = si->si_pid; + lsi->lsi_uid = si->si_uid; + lsi->lsi_ptr = PTROUT(si->si_value.sival_ptr); break; + + case SI_ASYNCIO: + lsi->lsi_int = si->si_value.sival_int; + lsi->lsi_ptr = PTROUT(si->si_value.sival_ptr); + break; + default: - /* XXX SI_TIMER etc... */ - lsi->lsi_pid = ksi->ksi_pid; - lsi->lsi_uid = ksi->ksi_uid; + switch (sig) { + case LINUX_SIGPOLL: + /* XXX si_fd? */ + lsi->lsi_band = si->si_band; + break; + + case LINUX_SIGCHLD: + lsi->lsi_errno = 0; + lsi->lsi_pid = si->si_pid; + lsi->lsi_uid = si->si_uid; + + if (si->si_code == CLD_STOPPED) + lsi->lsi_status = bsd_to_linux_signal(si->si_status); + else if (si->si_code == CLD_CONTINUED) + lsi->lsi_status = bsd_to_linux_signal(SIGCONT); + else + lsi->lsi_status = si->si_status; + break; + + case LINUX_SIGBUS: + case LINUX_SIGILL: + case LINUX_SIGFPE: + case LINUX_SIGSEGV: + lsi->lsi_addr = PTROUT(si->si_addr); + break; + + default: + lsi->lsi_pid = si->si_pid; + lsi->lsi_uid = si->si_uid; + if (sig >= LINUX_SIGRTMIN) { + lsi->lsi_int = si->si_value.sival_int; + lsi->lsi_ptr = PTROUT(si->si_value.sival_ptr); + } + break; + } break; } - if (sig >= LINUX_SIGRTMIN) { - lsi->lsi_int = ksi->ksi_info.si_value.sival_int; - lsi->lsi_ptr = PTROUT(ksi->ksi_info.si_value.sival_ptr); +} + +void +lsiginfo_to_ksiginfo(const l_siginfo_t *lsi, ksiginfo_t *ksi, int sig) +{ + + ksi->ksi_signo = sig; + ksi->ksi_code = lsi->lsi_code; /* XXX. Convert. */ + ksi->ksi_pid = lsi->lsi_pid; + ksi->ksi_uid = lsi->lsi_uid; + ksi->ksi_status = lsi->lsi_status; + ksi->ksi_addr = PTRIN(lsi->lsi_addr); + ksi->ksi_info.si_value.sival_int = lsi->lsi_int; +} + +int +linux_rt_sigqueueinfo(struct thread *td, struct linux_rt_sigqueueinfo_args *args) +{ + l_siginfo_t linfo; + struct proc *p; + ksiginfo_t ksi; + int error; + int sig; + + if (!LINUX_SIG_VALID(args->sig)) + return (EINVAL); + + error = copyin(args->info, &linfo, sizeof(linfo)); + if (error != 0) + return (error); + + if (linfo.lsi_code >= 0) + return (EPERM); + + sig = linux_to_bsd_signal(args->sig); + + error = ESRCH; + if ((p = pfind(args->pid)) != NULL || + (p = zpfind(args->pid)) != NULL) { + error = p_cansignal(td, p, sig); + if (error != 0) { + PROC_UNLOCK(p); + return (error); + } + + ksiginfo_init(&ksi); + lsiginfo_to_ksiginfo(&linfo, &ksi, sig); + error = tdsendsignal(p, NULL, sig, &ksi); + PROC_UNLOCK(p); } + + return (error); } |
