X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsparc64%2Fkernel%2Fsignal32.c;h=63d9cec39754b4ddb2c9e59af788610faf29863d;hb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;hp=a9a5b31a3a3aebdfa39ac97fdd81b09ee216ef05;hpb=a2c21200f1c81b08cb55e417b68150bba439b646;p=linux-2.6.git diff --git a/arch/sparc64/kernel/signal32.c b/arch/sparc64/kernel/signal32.c index a9a5b31a3..63d9cec39 100644 --- a/arch/sparc64/kernel/signal32.c +++ b/arch/sparc64/kernel/signal32.c @@ -59,6 +59,16 @@ struct signal_sframe32 { unsigned int extramask[_COMPAT_NSIG_WORDS - 1]; }; +/* This magic should be in g_upper[0] for all upper parts + * to be valid. + */ +#define SIGINFO_EXTRA_V8PLUS_MAGIC 0x130e269 +typedef struct { + unsigned int g_upper[8]; + unsigned int o_upper[8]; + unsigned int asi; +} siginfo_extra_v8plus_t; + /* * And the new one, intended to be used for Linux applications only * (we have enough in there to work with clone). @@ -76,9 +86,61 @@ struct new_signal_frame32 { __siginfo_fpu_t fpu_state; }; +struct siginfo32 { + int si_signo; + int si_errno; + int si_code; + + union { + int _pad[SI_PAD_SIZE32]; + + /* kill() */ + struct { + compat_pid_t _pid; /* sender's pid */ + unsigned int _uid; /* sender's uid */ + } _kill; + + /* POSIX.1b timers */ + struct { + timer_t _tid; /* timer id */ + int _overrun; /* overrun count */ + sigval_t32 _sigval; /* same as below */ + int _sys_private; /* not to be passed to user */ + } _timer; + + /* POSIX.1b signals */ + struct { + compat_pid_t _pid; /* sender's pid */ + unsigned int _uid; /* sender's uid */ + sigval_t32 _sigval; + } _rt; + + /* SIGCHLD */ + struct { + compat_pid_t _pid; /* which child */ + unsigned int _uid; /* sender's uid */ + int _status; /* exit code */ + compat_clock_t _utime; + compat_clock_t _stime; + } _sigchld; + + /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */ + struct { + u32 _addr; /* faulting insn/memory ref. */ + int _trapno; + } _sigfault; + + /* SIGPOLL */ + struct { + int _band; /* POLL_IN, POLL_OUT, POLL_MSG */ + int _fd; + } _sigpoll; + } _sifields; +}; + struct rt_signal_frame32 { struct sparc_stackf32 ss; - siginfo_t32 info; + struct siginfo32 info; struct pt_regs32 regs; compat_sigset_t mask; /* __siginfo_fpu32_t * */ u32 fpu_save; @@ -95,11 +157,11 @@ struct rt_signal_frame32 { #define NF_ALIGNEDSZ (((sizeof(struct new_signal_frame32) + 7) & (~7))) #define RT_ALIGNEDSZ (((sizeof(struct rt_signal_frame32) + 7) & (~7))) -int copy_siginfo_to_user32(siginfo_t32 __user *to, siginfo_t *from) +int copy_siginfo_to_user32(struct siginfo32 __user *to, siginfo_t *from) { int err; - if (!access_ok(VERIFY_WRITE, to, sizeof(siginfo_t32))) + if (!access_ok(VERIFY_WRITE, to, sizeof(struct siginfo32))) return -EFAULT; /* If you change siginfo_t structure, please be sure @@ -119,7 +181,7 @@ int copy_siginfo_to_user32(siginfo_t32 __user *to, siginfo_t *from) case __SI_TIMER >> 16: err |= __put_user(from->si_tid, &to->si_tid); err |= __put_user(from->si_overrun, &to->si_overrun); - err |= __put_user((u32)(u64)from->si_ptr, &to->si_ptr); + err |= __put_user(from->si_int, &to->si_int); break; case __SI_CHLD >> 16: err |= __put_user(from->si_utime, &to->si_utime); @@ -145,6 +207,22 @@ int copy_siginfo_to_user32(siginfo_t32 __user *to, siginfo_t *from) return err; } +/* CAUTION: This is just a very minimalist implementation for the + * sake of compat_sys_rt_sigqueueinfo() + */ +int copy_siginfo_to_kernel32(siginfo_t *to, struct siginfo32 __user *from) +{ + if (!access_ok(VERIFY_WRITE, from, sizeof(struct siginfo32))) + return -EFAULT; + + if (copy_from_user(to, from, 3*sizeof(int)) || + copy_from_user(to->_sifields._pad, from->_sifields._pad, + SI_PAD_SIZE)) + return -EFAULT; + + return 0; +} + /* * atomically swap in the new signal mask, and wait for a signal. * This is really tricky on the Sparc, watch out... @@ -299,8 +377,13 @@ void do_new_sigreturn32(struct pt_regs *regs) if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) { err |= __get_user(i, &sf->v8plus.g_upper[0]); if (i == SIGINFO_EXTRA_V8PLUS_MAGIC) { + unsigned long asi; + for (i = UREG_G1; i <= UREG_I7; i++) err |= __get_user(((u32 *)regs->u_regs)[2*i], &sf->v8plus.g_upper[i]); + err |= __get_user(asi, &sf->v8plus.asi); + regs->tstate &= ~TSTATE_ASI; + regs->tstate |= ((asi & 0xffUL) << 24UL); } } @@ -330,7 +413,7 @@ void do_new_sigreturn32(struct pt_regs *regs) return; segv: - do_exit(SIGSEGV); + force_sig(SIGSEGV, current); } asmlinkage void do_sigreturn32(struct pt_regs *regs) @@ -400,7 +483,7 @@ asmlinkage void do_sigreturn32(struct pt_regs *regs) return; segv: - do_exit(SIGSEGV); + force_sig(SIGSEGV, current); } asmlinkage void do_rt_sigreturn32(struct pt_regs *regs) @@ -447,8 +530,13 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs) if ((psr & (PSR_VERS|PSR_IMPL)) == PSR_V8PLUS) { err |= __get_user(i, &sf->v8plus.g_upper[0]); if (i == SIGINFO_EXTRA_V8PLUS_MAGIC) { + unsigned long asi; + for (i = UREG_G1; i <= UREG_I7; i++) err |= __get_user(((u32 *)regs->u_regs)[2*i], &sf->v8plus.g_upper[i]); + err |= __get_user(asi, &sf->v8plus.asi); + regs->tstate &= ~TSTATE_ASI; + regs->tstate |= ((asi & 0xffUL) << 24UL); } } @@ -487,7 +575,7 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs) spin_unlock_irq(¤t->sighand->siglock); return; segv: - do_exit(SIGSEGV); + force_sig(SIGSEGV, current); } /* Checks if the fp is valid */ @@ -648,7 +736,7 @@ setup_frame32(struct sigaction *sa, struct pt_regs *regs, int signr, sigset_t *o return; sigsegv: - do_exit(SIGSEGV); + force_sigsegv(signr, current); } @@ -715,7 +803,10 @@ static void new_setup_frame32(struct k_sigaction *ka, struct pt_regs *regs, err |= __put_user(sizeof(siginfo_extra_v8plus_t), &sf->extra_size); err |= __put_user(SIGINFO_EXTRA_V8PLUS_MAGIC, &sf->v8plus.g_upper[0]); for (i = 1; i < 16; i++) - err |= __put_user(((u32 *)regs->u_regs)[2*i], &sf->v8plus.g_upper[i]); + err |= __put_user(((u32 *)regs->u_regs)[2*i], + &sf->v8plus.g_upper[i]); + err |= __put_user((regs->tstate & TSTATE_ASI) >> 24UL, + &sf->v8plus.asi); if (psr & PSR_EF) { err |= save_fpu_state32(regs, &sf->fpu_state); @@ -749,6 +840,7 @@ static void new_setup_frame32(struct k_sigaction *ka, struct pt_regs *regs, regs->u_regs[UREG_FP] = (unsigned long) sf; regs->u_regs[UREG_I0] = signo; regs->u_regs[UREG_I1] = (unsigned long) &sf->info; + regs->u_regs[UREG_I2] = (unsigned long) &sf->info; /* 4. signal handler */ regs->tpc = (unsigned long) ka->sa.sa_handler; @@ -795,7 +887,7 @@ static void new_setup_frame32(struct k_sigaction *ka, struct pt_regs *regs, sigill: do_exit(SIGILL); sigsegv: - do_exit(SIGSEGV); + force_sigsegv(signo, current); } /* Setup a Solaris stack frame */ @@ -919,7 +1011,7 @@ setup_svr4_frame32(struct sigaction *sa, unsigned long pc, unsigned long npc, return; sigsegv: - do_exit(SIGSEGV); + force_sigsegv(signr, current); } asmlinkage int @@ -1070,7 +1162,7 @@ asmlinkage int svr4_setcontext(svr4_ucontext_t __user *c, struct pt_regs *regs) return -EINTR; sigsegv: - do_exit(SIGSEGV); + return -EFAULT; } static void setup_rt_frame32(struct k_sigaction *ka, struct pt_regs *regs, @@ -1119,6 +1211,8 @@ static void setup_rt_frame32(struct k_sigaction *ka, struct pt_regs *regs, for (i = 1; i < 16; i++) err |= __put_user(((u32 *)regs->u_regs)[2*i], &sf->v8plus.g_upper[i]); + err |= __put_user((regs->tstate & TSTATE_ASI) >> 24UL, + &sf->v8plus.asi); if (psr & PSR_EF) { err |= save_fpu_state32(regs, &sf->fpu_state); @@ -1157,6 +1251,7 @@ static void setup_rt_frame32(struct k_sigaction *ka, struct pt_regs *regs, regs->u_regs[UREG_FP] = (unsigned long) sf; regs->u_regs[UREG_I0] = signr; regs->u_regs[UREG_I1] = (unsigned long) &sf->info; + regs->u_regs[UREG_I2] = (unsigned long) &sf->regs; /* 4. signal handler */ regs->tpc = (unsigned long) ka->sa.sa_handler; @@ -1206,7 +1301,7 @@ static void setup_rt_frame32(struct k_sigaction *ka, struct pt_regs *regs, sigill: do_exit(SIGILL); sigsegv: - do_exit(SIGSEGV); + force_sigsegv(signr, current); } static inline void handle_signal32(unsigned long signr, struct k_sigaction *ka, @@ -1225,8 +1320,6 @@ static inline void handle_signal32(unsigned long signr, struct k_sigaction *ka, else setup_frame32(&ka->sa, regs, signr, oldset, info); } - if (ka->sa.sa_flags & SA_ONESHOT) - ka->sa.sa_handler = SIG_DFL; if (!(ka->sa.sa_flags & SA_NOMASK)) { spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); @@ -1266,21 +1359,19 @@ int do_signal32(sigset_t *oldset, struct pt_regs * regs, { siginfo_t info; struct signal_deliver_cookie cookie; + struct k_sigaction ka; int signr; int svr4_signal = current->personality == PER_SVR4; cookie.restart_syscall = restart_syscall; cookie.orig_i0 = orig_i0; - signr = get_signal_to_deliver(&info, regs, &cookie); + signr = get_signal_to_deliver(&info, &ka, regs, &cookie); if (signr > 0) { - struct k_sigaction *ka; - - ka = ¤t->sighand->action[signr-1]; - if (cookie.restart_syscall) - syscall_restart32(orig_i0, regs, &ka->sa); - handle_signal32(signr, ka, &info, oldset, regs, svr4_signal); + syscall_restart32(orig_i0, regs, &ka.sa); + handle_signal32(signr, &ka, &info, oldset, + regs, svr4_signal); return 1; } if (cookie.restart_syscall &&