Commit 737de1d1 authored by Mike Frysinger's avatar Mike Frysinger Committed by Riku Voipio
Browse files

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



Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
Signed-off-by: default avatarRiku Voipio <riku.voipio@nokia.com>
parent c3109ba1

linux-user/syscall.c

+67 −0
Original line number Diff line number Diff line
@@ -235,6 +235,12 @@ _syscall6(int,sys_futex,int *,uaddr,int,op,int,val, 
          const struct timespec *,timeout,int *,uaddr2,int,val3)

#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[] = {

  { 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. */

        ret = -TARGET_ENOTDIR;

        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:

        {

            struct sched_param *target_schp;