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linux-user: implement sched_{g,s}etaffinity

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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
This commit is contained in:
Mike Frysinger 2011-02-07 01:05:55 -05:00 committed by Riku Voipio
parent c3109ba1b1
commit 737de1d135
1 changed files with 67 additions and 0 deletions
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67
linux-user/syscall.c
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@ -235,6 +235,12 @@ _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
const struct timespec *,timeout,int *,uaddr2,int,val3) const struct timespec *,timeout,int *,uaddr2,int,val3)
#endif #endif
#endif #endif
#define __NR_sys_sched_getaffinity __NR_sched_getaffinity
_syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
unsigned long *, user_mask_ptr);
#define __NR_sys_sched_setaffinity __NR_sched_setaffinity
_syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
unsigned long *, user_mask_ptr);
static bitmask_transtbl fcntl_flags_tbl[] = { static bitmask_transtbl fcntl_flags_tbl[] = {
{ TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
@ -6354,6 +6360,67 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
return value. */ return value. */
ret = -TARGET_ENOTDIR; ret = -TARGET_ENOTDIR;
break; break;
case TARGET_NR_sched_getaffinity:
{
unsigned int mask_size;
unsigned long *mask;
/*
* sched_getaffinity needs multiples of ulong, so need to take
* care of mismatches between target ulong and host ulong sizes.
*/
if (arg2 & (sizeof(abi_ulong) - 1)) {
ret = -TARGET_EINVAL;
break;
}
mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
mask = alloca(mask_size);
ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask));
if (!is_error(ret)) {
if (arg2 > ret) {
/* Zero out any extra space kernel didn't fill */
unsigned long zero = arg2 - ret;
p = alloca(zero);
memset(p, 0, zero);
if (copy_to_user(arg3 + zero, p, zero)) {
goto efault;
}
arg2 = ret;
}
if (copy_to_user(arg3, mask, arg2)) {
goto efault;
}
ret = arg2;
}
}
break;
case TARGET_NR_sched_setaffinity:
{
unsigned int mask_size;
unsigned long *mask;
/*
* sched_setaffinity needs multiples of ulong, so need to take
* care of mismatches between target ulong and host ulong sizes.
*/
if (arg2 & (sizeof(abi_ulong) - 1)) {
ret = -TARGET_EINVAL;
break;
}
mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1);
mask = alloca(mask_size);
if (!lock_user_struct(VERIFY_READ, p, arg3, 1)) {
goto efault;
}
memcpy(mask, p, arg2);
unlock_user_struct(p, arg2, 0);
ret = get_errno(sys_sched_setaffinity(arg1, mask_size, mask));
}
break;
case TARGET_NR_sched_setparam: case TARGET_NR_sched_setparam:
{ {
struct sched_param *target_schp; struct sched_param *target_schp;