Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
853
arch/mips/kernel/irixsig.c
Normal file
853
arch/mips/kernel/irixsig.c
Normal file
@@ -0,0 +1,853 @@
|
||||
/*
|
||||
* irixsig.c: WHEEE, IRIX signals! YOW, am I compatible or what?!?!
|
||||
*
|
||||
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
|
||||
* Copyright (C) 1997 - 2000 Ralf Baechle (ralf@gnu.org)
|
||||
* Copyright (C) 2000 Silicon Graphics, Inc.
|
||||
*/
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/smp.h>
|
||||
#include <linux/smp_lock.h>
|
||||
#include <linux/time.h>
|
||||
#include <linux/ptrace.h>
|
||||
|
||||
#include <asm/ptrace.h>
|
||||
#include <asm/uaccess.h>
|
||||
|
||||
#undef DEBUG_SIG
|
||||
|
||||
#define _S(nr) (1<<((nr)-1))
|
||||
|
||||
#define _BLOCKABLE (~(_S(SIGKILL) | _S(SIGSTOP)))
|
||||
|
||||
typedef struct {
|
||||
unsigned long sig[4];
|
||||
} irix_sigset_t;
|
||||
|
||||
struct sigctx_irix5 {
|
||||
u32 rmask, cp0_status;
|
||||
u64 pc;
|
||||
u64 regs[32];
|
||||
u64 fpregs[32];
|
||||
u32 usedfp, fpcsr, fpeir, sstk_flags;
|
||||
u64 hi, lo;
|
||||
u64 cp0_cause, cp0_badvaddr, _unused0;
|
||||
irix_sigset_t sigset;
|
||||
u64 weird_fpu_thing;
|
||||
u64 _unused1[31];
|
||||
};
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
/* Debugging */
|
||||
static inline void dump_irix5_sigctx(struct sigctx_irix5 *c)
|
||||
{
|
||||
int i;
|
||||
|
||||
printk("misc: rmask[%08lx] status[%08lx] pc[%08lx]\n",
|
||||
(unsigned long) c->rmask,
|
||||
(unsigned long) c->cp0_status,
|
||||
(unsigned long) c->pc);
|
||||
printk("regs: ");
|
||||
for(i = 0; i < 16; i++)
|
||||
printk("[%d]<%08lx> ", i, (unsigned long) c->regs[i]);
|
||||
printk("\nregs: ");
|
||||
for(i = 16; i < 32; i++)
|
||||
printk("[%d]<%08lx> ", i, (unsigned long) c->regs[i]);
|
||||
printk("\nfpregs: ");
|
||||
for(i = 0; i < 16; i++)
|
||||
printk("[%d]<%08lx> ", i, (unsigned long) c->fpregs[i]);
|
||||
printk("\nfpregs: ");
|
||||
for(i = 16; i < 32; i++)
|
||||
printk("[%d]<%08lx> ", i, (unsigned long) c->fpregs[i]);
|
||||
printk("misc: usedfp[%d] fpcsr[%08lx] fpeir[%08lx] stk_flgs[%08lx]\n",
|
||||
(int) c->usedfp, (unsigned long) c->fpcsr,
|
||||
(unsigned long) c->fpeir, (unsigned long) c->sstk_flags);
|
||||
printk("misc: hi[%08lx] lo[%08lx] cause[%08lx] badvaddr[%08lx]\n",
|
||||
(unsigned long) c->hi, (unsigned long) c->lo,
|
||||
(unsigned long) c->cp0_cause, (unsigned long) c->cp0_badvaddr);
|
||||
printk("misc: sigset<0>[%08lx] sigset<1>[%08lx] sigset<2>[%08lx] "
|
||||
"sigset<3>[%08lx]\n", (unsigned long) c->sigset.sig[0],
|
||||
(unsigned long) c->sigset.sig[1],
|
||||
(unsigned long) c->sigset.sig[2],
|
||||
(unsigned long) c->sigset.sig[3]);
|
||||
}
|
||||
#endif
|
||||
|
||||
static void setup_irix_frame(struct k_sigaction *ka, struct pt_regs *regs,
|
||||
int signr, sigset_t *oldmask)
|
||||
{
|
||||
unsigned long sp;
|
||||
struct sigctx_irix5 *ctx;
|
||||
int i;
|
||||
|
||||
sp = regs->regs[29];
|
||||
sp -= sizeof(struct sigctx_irix5);
|
||||
sp &= ~(0xf);
|
||||
ctx = (struct sigctx_irix5 *) sp;
|
||||
if (!access_ok(VERIFY_WRITE, ctx, sizeof(*ctx)))
|
||||
goto segv_and_exit;
|
||||
|
||||
__put_user(0, &ctx->weird_fpu_thing);
|
||||
__put_user(~(0x00000001), &ctx->rmask);
|
||||
__put_user(0, &ctx->regs[0]);
|
||||
for(i = 1; i < 32; i++)
|
||||
__put_user((u64) regs->regs[i], &ctx->regs[i]);
|
||||
|
||||
__put_user((u64) regs->hi, &ctx->hi);
|
||||
__put_user((u64) regs->lo, &ctx->lo);
|
||||
__put_user((u64) regs->cp0_epc, &ctx->pc);
|
||||
__put_user(!!used_math(), &ctx->usedfp);
|
||||
__put_user((u64) regs->cp0_cause, &ctx->cp0_cause);
|
||||
__put_user((u64) regs->cp0_badvaddr, &ctx->cp0_badvaddr);
|
||||
|
||||
__put_user(0, &ctx->sstk_flags); /* XXX sigstack unimp... todo... */
|
||||
|
||||
__copy_to_user(&ctx->sigset, oldmask, sizeof(irix_sigset_t));
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
dump_irix5_sigctx(ctx);
|
||||
#endif
|
||||
|
||||
regs->regs[4] = (unsigned long) signr;
|
||||
regs->regs[5] = 0; /* XXX sigcode XXX */
|
||||
regs->regs[6] = regs->regs[29] = sp;
|
||||
regs->regs[7] = (unsigned long) ka->sa.sa_handler;
|
||||
regs->regs[25] = regs->cp0_epc = (unsigned long) ka->sa_restorer;
|
||||
|
||||
return;
|
||||
|
||||
segv_and_exit:
|
||||
force_sigsegv(signr, current);
|
||||
}
|
||||
|
||||
static void inline
|
||||
setup_irix_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
|
||||
int signr, sigset_t *oldmask, siginfo_t *info)
|
||||
{
|
||||
printk("Aiee: setup_tr_frame wants to be written");
|
||||
do_exit(SIGSEGV);
|
||||
}
|
||||
|
||||
static inline void handle_signal(unsigned long sig, siginfo_t *info,
|
||||
struct k_sigaction *ka, sigset_t *oldset, struct pt_regs * regs)
|
||||
{
|
||||
switch(regs->regs[0]) {
|
||||
case ERESTARTNOHAND:
|
||||
regs->regs[2] = EINTR;
|
||||
break;
|
||||
case ERESTARTSYS:
|
||||
if(!(ka->sa.sa_flags & SA_RESTART)) {
|
||||
regs->regs[2] = EINTR;
|
||||
break;
|
||||
}
|
||||
/* fallthrough */
|
||||
case ERESTARTNOINTR: /* Userland will reload $v0. */
|
||||
regs->cp0_epc -= 8;
|
||||
}
|
||||
|
||||
regs->regs[0] = 0; /* Don't deal with this again. */
|
||||
|
||||
if (ka->sa.sa_flags & SA_SIGINFO)
|
||||
setup_irix_rt_frame(ka, regs, sig, oldset, info);
|
||||
else
|
||||
setup_irix_frame(ka, regs, sig, oldset);
|
||||
|
||||
if (!(ka->sa.sa_flags & SA_NODEFER)) {
|
||||
spin_lock_irq(¤t->sighand->siglock);
|
||||
sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask);
|
||||
sigaddset(¤t->blocked,sig);
|
||||
recalc_sigpending();
|
||||
spin_unlock_irq(¤t->sighand->siglock);
|
||||
}
|
||||
}
|
||||
|
||||
asmlinkage int do_irix_signal(sigset_t *oldset, struct pt_regs *regs)
|
||||
{
|
||||
struct k_sigaction ka;
|
||||
siginfo_t info;
|
||||
int signr;
|
||||
|
||||
/*
|
||||
* We want the common case to go fast, which is why we may in certain
|
||||
* cases get here from kernel mode. Just return without doing anything
|
||||
* if so.
|
||||
*/
|
||||
if (!user_mode(regs))
|
||||
return 1;
|
||||
|
||||
if (try_to_freeze(0))
|
||||
goto no_signal;
|
||||
|
||||
if (!oldset)
|
||||
oldset = ¤t->blocked;
|
||||
|
||||
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
|
||||
if (signr > 0) {
|
||||
handle_signal(signr, &info, &ka, oldset, regs);
|
||||
return 1;
|
||||
}
|
||||
|
||||
no_signal:
|
||||
/*
|
||||
* Who's code doesn't conform to the restartable syscall convention
|
||||
* dies here!!! The li instruction, a single machine instruction,
|
||||
* must directly be followed by the syscall instruction.
|
||||
*/
|
||||
if (regs->regs[0]) {
|
||||
if (regs->regs[2] == ERESTARTNOHAND ||
|
||||
regs->regs[2] == ERESTARTSYS ||
|
||||
regs->regs[2] == ERESTARTNOINTR) {
|
||||
regs->cp0_epc -= 8;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
asmlinkage void
|
||||
irix_sigreturn(struct pt_regs *regs)
|
||||
{
|
||||
struct sigctx_irix5 *context, *magic;
|
||||
unsigned long umask, mask;
|
||||
u64 *fregs;
|
||||
int sig, i, base = 0;
|
||||
sigset_t blocked;
|
||||
|
||||
/* Always make any pending restarted system calls return -EINTR */
|
||||
current_thread_info()->restart_block.fn = do_no_restart_syscall;
|
||||
|
||||
if (regs->regs[2] == 1000)
|
||||
base = 1;
|
||||
|
||||
context = (struct sigctx_irix5 *) regs->regs[base + 4];
|
||||
magic = (struct sigctx_irix5 *) regs->regs[base + 5];
|
||||
sig = (int) regs->regs[base + 6];
|
||||
#ifdef DEBUG_SIG
|
||||
printk("[%s:%d] IRIX sigreturn(scp[%p],ucp[%p],sig[%d])\n",
|
||||
current->comm, current->pid, context, magic, sig);
|
||||
#endif
|
||||
if (!context)
|
||||
context = magic;
|
||||
if (!access_ok(VERIFY_READ, context, sizeof(struct sigctx_irix5)))
|
||||
goto badframe;
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
dump_irix5_sigctx(context);
|
||||
#endif
|
||||
|
||||
__get_user(regs->cp0_epc, &context->pc);
|
||||
umask = context->rmask; mask = 2;
|
||||
for (i = 1; i < 32; i++, mask <<= 1) {
|
||||
if(umask & mask)
|
||||
__get_user(regs->regs[i], &context->regs[i]);
|
||||
}
|
||||
__get_user(regs->hi, &context->hi);
|
||||
__get_user(regs->lo, &context->lo);
|
||||
|
||||
if ((umask & 1) && context->usedfp) {
|
||||
fregs = (u64 *) ¤t->thread.fpu;
|
||||
for(i = 0; i < 32; i++)
|
||||
fregs[i] = (u64) context->fpregs[i];
|
||||
__get_user(current->thread.fpu.hard.fcr31, &context->fpcsr);
|
||||
}
|
||||
|
||||
/* XXX do sigstack crapola here... XXX */
|
||||
|
||||
if (__copy_from_user(&blocked, &context->sigset, sizeof(blocked)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&blocked, ~_BLOCKABLE);
|
||||
spin_lock_irq(¤t->sighand->siglock);
|
||||
current->blocked = blocked;
|
||||
recalc_sigpending();
|
||||
spin_unlock_irq(¤t->sighand->siglock);
|
||||
|
||||
/*
|
||||
* Don't let your children do this ...
|
||||
*/
|
||||
if (current_thread_info()->flags & TIF_SYSCALL_TRACE)
|
||||
do_syscall_trace(regs, 1);
|
||||
__asm__ __volatile__(
|
||||
"move\t$29,%0\n\t"
|
||||
"j\tsyscall_exit"
|
||||
:/* no outputs */
|
||||
:"r" (®s));
|
||||
/* Unreached */
|
||||
|
||||
badframe:
|
||||
force_sig(SIGSEGV, current);
|
||||
}
|
||||
|
||||
struct sigact_irix5 {
|
||||
int flags;
|
||||
void (*handler)(int);
|
||||
u32 sigset[4];
|
||||
int _unused0[2];
|
||||
};
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
static inline void dump_sigact_irix5(struct sigact_irix5 *p)
|
||||
{
|
||||
printk("<f[%d] hndlr[%08lx] msk[%08lx]>", p->flags,
|
||||
(unsigned long) p->handler,
|
||||
(unsigned long) p->sigset[0]);
|
||||
}
|
||||
#endif
|
||||
|
||||
asmlinkage int
|
||||
irix_sigaction(int sig, const struct sigaction *act,
|
||||
struct sigaction *oact, void *trampoline)
|
||||
{
|
||||
struct k_sigaction new_ka, old_ka;
|
||||
int ret;
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
printk(" (%d,%s,%s,%08lx) ", sig, (!new ? "0" : "NEW"),
|
||||
(!old ? "0" : "OLD"), trampoline);
|
||||
if(new) {
|
||||
dump_sigact_irix5(new); printk(" ");
|
||||
}
|
||||
#endif
|
||||
if (act) {
|
||||
sigset_t mask;
|
||||
if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
|
||||
__get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
|
||||
__get_user(new_ka.sa.sa_flags, &act->sa_flags))
|
||||
return -EFAULT;
|
||||
|
||||
__copy_from_user(&mask, &act->sa_mask, sizeof(sigset_t));
|
||||
|
||||
/*
|
||||
* Hmmm... methinks IRIX libc always passes a valid trampoline
|
||||
* value for all invocations of sigaction. Will have to
|
||||
* investigate. POSIX POSIX, die die die...
|
||||
*/
|
||||
new_ka.sa_restorer = trampoline;
|
||||
}
|
||||
|
||||
/* XXX Implement SIG_SETMASK32 for IRIX compatibility */
|
||||
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
|
||||
|
||||
if (!ret && oact) {
|
||||
if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
|
||||
__put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
|
||||
__put_user(old_ka.sa.sa_flags, &oact->sa_flags))
|
||||
return -EFAULT;
|
||||
__copy_to_user(&old_ka.sa.sa_mask, &oact->sa_mask,
|
||||
sizeof(sigset_t));
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
asmlinkage int irix_sigpending(irix_sigset_t *set)
|
||||
{
|
||||
return do_sigpending(set, sizeof(*set));
|
||||
}
|
||||
|
||||
asmlinkage int irix_sigprocmask(int how, irix_sigset_t *new, irix_sigset_t *old)
|
||||
{
|
||||
sigset_t oldbits, newbits;
|
||||
|
||||
if (new) {
|
||||
if (!access_ok(VERIFY_READ, new, sizeof(*new)))
|
||||
return -EFAULT;
|
||||
__copy_from_user(&newbits, new, sizeof(unsigned long)*4);
|
||||
sigdelsetmask(&newbits, ~_BLOCKABLE);
|
||||
|
||||
spin_lock_irq(¤t->sighand->siglock);
|
||||
oldbits = current->blocked;
|
||||
|
||||
switch(how) {
|
||||
case 1:
|
||||
sigorsets(&newbits, &oldbits, &newbits);
|
||||
break;
|
||||
|
||||
case 2:
|
||||
sigandsets(&newbits, &oldbits, &newbits);
|
||||
break;
|
||||
|
||||
case 3:
|
||||
break;
|
||||
|
||||
case 256:
|
||||
siginitset(&newbits, newbits.sig[0]);
|
||||
break;
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
recalc_sigpending();
|
||||
spin_unlock_irq(¤t->sighand->siglock);
|
||||
}
|
||||
if(old) {
|
||||
if (!access_ok(VERIFY_WRITE, old, sizeof(*old)))
|
||||
return -EFAULT;
|
||||
__copy_to_user(old, ¤t->blocked, sizeof(unsigned long)*4);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
asmlinkage int irix_sigsuspend(struct pt_regs *regs)
|
||||
{
|
||||
sigset_t *uset, saveset, newset;
|
||||
|
||||
uset = (sigset_t *) regs->regs[4];
|
||||
if (copy_from_user(&newset, uset, sizeof(sigset_t)))
|
||||
return -EFAULT;
|
||||
sigdelsetmask(&newset, ~_BLOCKABLE);
|
||||
|
||||
spin_lock_irq(¤t->sighand->siglock);
|
||||
saveset = current->blocked;
|
||||
current->blocked = newset;
|
||||
recalc_sigpending();
|
||||
spin_unlock_irq(¤t->sighand->siglock);
|
||||
|
||||
regs->regs[2] = -EINTR;
|
||||
while (1) {
|
||||
current->state = TASK_INTERRUPTIBLE;
|
||||
schedule();
|
||||
if (do_irix_signal(&saveset, regs))
|
||||
return -EINTR;
|
||||
}
|
||||
}
|
||||
|
||||
/* hate hate hate... */
|
||||
struct irix5_siginfo {
|
||||
int sig, code, error;
|
||||
union {
|
||||
char unused[128 - (3 * 4)]; /* Safety net. */
|
||||
struct {
|
||||
int pid;
|
||||
union {
|
||||
int uid;
|
||||
struct {
|
||||
int utime, status, stime;
|
||||
} child;
|
||||
} procdata;
|
||||
} procinfo;
|
||||
|
||||
unsigned long fault_addr;
|
||||
|
||||
struct {
|
||||
int fd;
|
||||
long band;
|
||||
} fileinfo;
|
||||
|
||||
unsigned long sigval;
|
||||
} stuff;
|
||||
};
|
||||
|
||||
static inline unsigned long timespectojiffies(struct timespec *value)
|
||||
{
|
||||
unsigned long sec = (unsigned) value->tv_sec;
|
||||
long nsec = value->tv_nsec;
|
||||
|
||||
if (sec > (LONG_MAX / HZ))
|
||||
return LONG_MAX;
|
||||
nsec += 1000000000L / HZ - 1;
|
||||
nsec /= 1000000000L / HZ;
|
||||
return HZ * sec + nsec;
|
||||
}
|
||||
|
||||
asmlinkage int irix_sigpoll_sys(unsigned long *set, struct irix5_siginfo *info,
|
||||
struct timespec *tp)
|
||||
{
|
||||
long expire = MAX_SCHEDULE_TIMEOUT;
|
||||
sigset_t kset;
|
||||
int i, sig, error, timeo = 0;
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
printk("[%s:%d] irix_sigpoll_sys(%p,%p,%p)\n",
|
||||
current->comm, current->pid, set, info, tp);
|
||||
#endif
|
||||
|
||||
/* Must always specify the signal set. */
|
||||
if (!set)
|
||||
return -EINVAL;
|
||||
|
||||
if (!access_ok(VERIFY_READ, set, sizeof(kset))) {
|
||||
error = -EFAULT;
|
||||
goto out;
|
||||
}
|
||||
|
||||
__copy_from_user(&kset, set, sizeof(set));
|
||||
if (error)
|
||||
goto out;
|
||||
|
||||
if (info && clear_user(info, sizeof(*info))) {
|
||||
error = -EFAULT;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (tp) {
|
||||
if (!access_ok(VERIFY_READ, tp, sizeof(*tp)))
|
||||
return -EFAULT;
|
||||
if (!tp->tv_sec && !tp->tv_nsec) {
|
||||
error = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
expire = timespectojiffies(tp)+(tp->tv_sec||tp->tv_nsec);
|
||||
}
|
||||
|
||||
while(1) {
|
||||
long tmp = 0;
|
||||
|
||||
current->state = TASK_INTERRUPTIBLE;
|
||||
expire = schedule_timeout(expire);
|
||||
|
||||
for (i=0; i<=4; i++)
|
||||
tmp |= (current->pending.signal.sig[i] & kset.sig[i]);
|
||||
|
||||
if (tmp)
|
||||
break;
|
||||
if (!expire) {
|
||||
timeo = 1;
|
||||
break;
|
||||
}
|
||||
if (signal_pending(current))
|
||||
return -EINTR;
|
||||
}
|
||||
if (timeo)
|
||||
return -EAGAIN;
|
||||
|
||||
for(sig = 1; i <= 65 /* IRIX_NSIG */; sig++) {
|
||||
if (sigismember (&kset, sig))
|
||||
continue;
|
||||
if (sigismember (¤t->pending.signal, sig)) {
|
||||
/* XXX need more than this... */
|
||||
if (info)
|
||||
info->sig = sig;
|
||||
error = 0;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
/* Should not get here, but do something sane if we do. */
|
||||
error = -EINTR;
|
||||
|
||||
out:
|
||||
return error;
|
||||
}
|
||||
|
||||
/* This is here because of irix5_siginfo definition. */
|
||||
#define IRIX_P_PID 0
|
||||
#define IRIX_P_PGID 2
|
||||
#define IRIX_P_ALL 7
|
||||
|
||||
extern int getrusage(struct task_struct *, int, struct rusage __user *);
|
||||
|
||||
#define W_EXITED 1
|
||||
#define W_TRAPPED 2
|
||||
#define W_STOPPED 4
|
||||
#define W_CONT 8
|
||||
#define W_NOHANG 64
|
||||
|
||||
#define W_MASK (W_EXITED | W_TRAPPED | W_STOPPED | W_CONT | W_NOHANG)
|
||||
|
||||
asmlinkage int irix_waitsys(int type, int pid, struct irix5_siginfo *info,
|
||||
int options, struct rusage *ru)
|
||||
{
|
||||
int flag, retval;
|
||||
DECLARE_WAITQUEUE(wait, current);
|
||||
struct task_struct *tsk;
|
||||
struct task_struct *p;
|
||||
struct list_head *_p;
|
||||
|
||||
if (!info) {
|
||||
retval = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
if (!access_ok(VERIFY_WRITE, info, sizeof(*info))) {
|
||||
retval = -EFAULT;
|
||||
goto out;
|
||||
}
|
||||
if (ru) {
|
||||
if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru))) {
|
||||
retval = -EFAULT;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
if (options & ~(W_MASK)) {
|
||||
retval = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
if (type != IRIX_P_PID && type != IRIX_P_PGID && type != IRIX_P_ALL) {
|
||||
retval = -EINVAL;
|
||||
goto out;
|
||||
}
|
||||
add_wait_queue(¤t->signal->wait_chldexit, &wait);
|
||||
repeat:
|
||||
flag = 0;
|
||||
current->state = TASK_INTERRUPTIBLE;
|
||||
read_lock(&tasklist_lock);
|
||||
tsk = current;
|
||||
list_for_each(_p,&tsk->children) {
|
||||
p = list_entry(_p,struct task_struct,sibling);
|
||||
if ((type == IRIX_P_PID) && p->pid != pid)
|
||||
continue;
|
||||
if ((type == IRIX_P_PGID) && process_group(p) != pid)
|
||||
continue;
|
||||
if ((p->exit_signal != SIGCHLD))
|
||||
continue;
|
||||
flag = 1;
|
||||
switch (p->state) {
|
||||
case TASK_STOPPED:
|
||||
if (!p->exit_code)
|
||||
continue;
|
||||
if (!(options & (W_TRAPPED|W_STOPPED)) &&
|
||||
!(p->ptrace & PT_PTRACED))
|
||||
continue;
|
||||
read_unlock(&tasklist_lock);
|
||||
|
||||
/* move to end of parent's list to avoid starvation */
|
||||
write_lock_irq(&tasklist_lock);
|
||||
remove_parent(p);
|
||||
add_parent(p, p->parent);
|
||||
write_unlock_irq(&tasklist_lock);
|
||||
retval = ru ? getrusage(p, RUSAGE_BOTH, ru) : 0;
|
||||
if (!retval && ru) {
|
||||
retval |= __put_user(SIGCHLD, &info->sig);
|
||||
retval |= __put_user(0, &info->code);
|
||||
retval |= __put_user(p->pid, &info->stuff.procinfo.pid);
|
||||
retval |= __put_user((p->exit_code >> 8) & 0xff,
|
||||
&info->stuff.procinfo.procdata.child.status);
|
||||
retval |= __put_user(p->utime, &info->stuff.procinfo.procdata.child.utime);
|
||||
retval |= __put_user(p->stime, &info->stuff.procinfo.procdata.child.stime);
|
||||
}
|
||||
if (!retval) {
|
||||
p->exit_code = 0;
|
||||
}
|
||||
goto end_waitsys;
|
||||
|
||||
case EXIT_ZOMBIE:
|
||||
current->signal->cutime += p->utime + p->signal->cutime;
|
||||
current->signal->cstime += p->stime + p->signal->cstime;
|
||||
if (ru != NULL)
|
||||
getrusage(p, RUSAGE_BOTH, ru);
|
||||
__put_user(SIGCHLD, &info->sig);
|
||||
__put_user(1, &info->code); /* CLD_EXITED */
|
||||
__put_user(p->pid, &info->stuff.procinfo.pid);
|
||||
__put_user((p->exit_code >> 8) & 0xff,
|
||||
&info->stuff.procinfo.procdata.child.status);
|
||||
__put_user(p->utime,
|
||||
&info->stuff.procinfo.procdata.child.utime);
|
||||
__put_user(p->stime,
|
||||
&info->stuff.procinfo.procdata.child.stime);
|
||||
retval = 0;
|
||||
if (p->real_parent != p->parent) {
|
||||
write_lock_irq(&tasklist_lock);
|
||||
remove_parent(p);
|
||||
p->parent = p->real_parent;
|
||||
add_parent(p, p->parent);
|
||||
do_notify_parent(p, SIGCHLD);
|
||||
write_unlock_irq(&tasklist_lock);
|
||||
} else
|
||||
release_task(p);
|
||||
goto end_waitsys;
|
||||
default:
|
||||
continue;
|
||||
}
|
||||
tsk = next_thread(tsk);
|
||||
}
|
||||
read_unlock(&tasklist_lock);
|
||||
if (flag) {
|
||||
retval = 0;
|
||||
if (options & W_NOHANG)
|
||||
goto end_waitsys;
|
||||
retval = -ERESTARTSYS;
|
||||
if (signal_pending(current))
|
||||
goto end_waitsys;
|
||||
current->state = TASK_INTERRUPTIBLE;
|
||||
schedule();
|
||||
goto repeat;
|
||||
}
|
||||
retval = -ECHILD;
|
||||
end_waitsys:
|
||||
current->state = TASK_RUNNING;
|
||||
remove_wait_queue(¤t->signal->wait_chldexit, &wait);
|
||||
|
||||
out:
|
||||
return retval;
|
||||
}
|
||||
|
||||
struct irix5_context {
|
||||
u32 flags;
|
||||
u32 link;
|
||||
u32 sigmask[4];
|
||||
struct { u32 sp, size, flags; } stack;
|
||||
int regs[36];
|
||||
u32 fpregs[32];
|
||||
u32 fpcsr;
|
||||
u32 _unused0;
|
||||
u32 _unused1[47];
|
||||
u32 weird_graphics_thing;
|
||||
};
|
||||
|
||||
asmlinkage int irix_getcontext(struct pt_regs *regs)
|
||||
{
|
||||
int i, base = 0;
|
||||
struct irix5_context *ctx;
|
||||
unsigned long flags;
|
||||
|
||||
if (regs->regs[2] == 1000)
|
||||
base = 1;
|
||||
ctx = (struct irix5_context *) regs->regs[base + 4];
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
printk("[%s:%d] irix_getcontext(%p)\n",
|
||||
current->comm, current->pid, ctx);
|
||||
#endif
|
||||
|
||||
if (!access_ok(VERIFY_WRITE, ctx, sizeof(*ctx)))
|
||||
return -EFAULT;
|
||||
|
||||
__put_user(current->thread.irix_oldctx, &ctx->link);
|
||||
|
||||
__copy_to_user(&ctx->sigmask, ¤t->blocked, sizeof(irix_sigset_t));
|
||||
|
||||
/* XXX Do sigstack stuff someday... */
|
||||
__put_user(0, &ctx->stack.sp);
|
||||
__put_user(0, &ctx->stack.size);
|
||||
__put_user(0, &ctx->stack.flags);
|
||||
|
||||
__put_user(0, &ctx->weird_graphics_thing);
|
||||
__put_user(0, &ctx->regs[0]);
|
||||
for (i = 1; i < 32; i++)
|
||||
__put_user(regs->regs[i], &ctx->regs[i]);
|
||||
__put_user(regs->lo, &ctx->regs[32]);
|
||||
__put_user(regs->hi, &ctx->regs[33]);
|
||||
__put_user(regs->cp0_cause, &ctx->regs[34]);
|
||||
__put_user(regs->cp0_epc, &ctx->regs[35]);
|
||||
|
||||
flags = 0x0f;
|
||||
if (!used_math()) {
|
||||
flags &= ~(0x08);
|
||||
} else {
|
||||
/* XXX wheee... */
|
||||
printk("Wheee, no code for saving IRIX FPU context yet.\n");
|
||||
}
|
||||
__put_user(flags, &ctx->flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
asmlinkage unsigned long irix_setcontext(struct pt_regs *regs)
|
||||
{
|
||||
int error, base = 0;
|
||||
struct irix5_context *ctx;
|
||||
|
||||
if(regs->regs[2] == 1000)
|
||||
base = 1;
|
||||
ctx = (struct irix5_context *) regs->regs[base + 4];
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
printk("[%s:%d] irix_setcontext(%p)\n",
|
||||
current->comm, current->pid, ctx);
|
||||
#endif
|
||||
|
||||
if (!access_ok(VERIFY_READ, ctx, sizeof(*ctx))) {
|
||||
error = -EFAULT;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (ctx->flags & 0x02) {
|
||||
/* XXX sigstack garbage, todo... */
|
||||
printk("Wheee, cannot do sigstack stuff in setcontext\n");
|
||||
}
|
||||
|
||||
if (ctx->flags & 0x04) {
|
||||
int i;
|
||||
|
||||
/* XXX extra control block stuff... todo... */
|
||||
for(i = 1; i < 32; i++)
|
||||
regs->regs[i] = ctx->regs[i];
|
||||
regs->lo = ctx->regs[32];
|
||||
regs->hi = ctx->regs[33];
|
||||
regs->cp0_epc = ctx->regs[35];
|
||||
}
|
||||
|
||||
if (ctx->flags & 0x08) {
|
||||
/* XXX fpu context, blah... */
|
||||
printk("Wheee, cannot restore FPU context yet...\n");
|
||||
}
|
||||
current->thread.irix_oldctx = ctx->link;
|
||||
error = regs->regs[2];
|
||||
|
||||
out:
|
||||
return error;
|
||||
}
|
||||
|
||||
struct irix_sigstack { unsigned long sp; int status; };
|
||||
|
||||
asmlinkage int irix_sigstack(struct irix_sigstack *new, struct irix_sigstack *old)
|
||||
{
|
||||
int error = -EFAULT;
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
printk("[%s:%d] irix_sigstack(%p,%p)\n",
|
||||
current->comm, current->pid, new, old);
|
||||
#endif
|
||||
if(new) {
|
||||
if (!access_ok(VERIFY_READ, new, sizeof(*new)))
|
||||
goto out;
|
||||
}
|
||||
|
||||
if(old) {
|
||||
if (!access_ok(VERIFY_WRITE, old, sizeof(*old)))
|
||||
goto out;
|
||||
}
|
||||
error = 0;
|
||||
|
||||
out:
|
||||
return error;
|
||||
}
|
||||
|
||||
struct irix_sigaltstack { unsigned long sp; int size; int status; };
|
||||
|
||||
asmlinkage int irix_sigaltstack(struct irix_sigaltstack *new,
|
||||
struct irix_sigaltstack *old)
|
||||
{
|
||||
int error = -EFAULT;
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
printk("[%s:%d] irix_sigaltstack(%p,%p)\n",
|
||||
current->comm, current->pid, new, old);
|
||||
#endif
|
||||
if (new) {
|
||||
if (!access_ok(VERIFY_READ, new, sizeof(*new)))
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (old) {
|
||||
if (!access_ok(VERIFY_WRITE, old, sizeof(*old)))
|
||||
goto out;
|
||||
}
|
||||
error = 0;
|
||||
|
||||
out:
|
||||
error = 0;
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
struct irix_procset {
|
||||
int cmd, ltype, lid, rtype, rid;
|
||||
};
|
||||
|
||||
asmlinkage int irix_sigsendset(struct irix_procset *pset, int sig)
|
||||
{
|
||||
if (!access_ok(VERIFY_READ, pset, sizeof(*pset)))
|
||||
return -EFAULT;
|
||||
|
||||
#ifdef DEBUG_SIG
|
||||
printk("[%s:%d] irix_sigsendset([%d,%d,%d,%d,%d],%d)\n",
|
||||
current->comm, current->pid,
|
||||
pset->cmd, pset->ltype, pset->lid, pset->rtype, pset->rid,
|
||||
sig);
|
||||
#endif
|
||||
return -EINVAL;
|
||||
}
|
||||
Reference in New Issue
Block a user