diff options
| -rw-r--r-- | linux-user/syscall.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index bb6ef43a9e..4412a9b143 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -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; |