fix return value of pthread_getaffinity_np and pthread_setaffinity_np

these functions are expected to return an error code rather than
setting errno and returning -1.

(cherry picked from commit 66140b0c92)
This commit is contained in:
Rich Felker 2014-12-02 22:17:52 -05:00
parent 65a0ee3a52
commit 051a8fdda8

View File

@ -11,20 +11,23 @@ int sched_setaffinity(pid_t tid, size_t size, const cpu_set_t *set)
int pthread_setaffinity_np(pthread_t td, size_t size, const cpu_set_t *set)
{
return syscall(SYS_sched_setaffinity, td->tid, size, set);
return -__syscall(SYS_sched_setaffinity, td->tid, size, set);
}
static int do_getaffinity(pid_t tid, size_t size, cpu_set_t *set)
{
long ret = __syscall(SYS_sched_getaffinity, tid, size, set);
if (ret < 0) return ret;
if (ret < size) memset((char *)set+ret, 0, size-ret);
return 0;
}
int sched_getaffinity(pid_t tid, size_t size, cpu_set_t *set)
{
long ret = __syscall(SYS_sched_getaffinity, tid, size, set);
if (ret > 0) {
if (ret < size) memset((char *)set+ret, 0, size-ret);
ret = 0;
}
return __syscall_ret(ret);
return __syscall_ret(do_getaffinity(tid, size, set));
}
int pthread_getaffinity_np(pthread_t td, size_t size, cpu_set_t *set)
{
return sched_getaffinity(td->tid, size, set);
return -do_getaffinity(td->tid, size, set);
}