minix/lib/libc/sys/syscall.c

   1 #include <sys/cdefs.h>
   2 #include <lib.h>
   3 #include "namespace.h"
   4
   5 #ifdef __weak_alias
   6 __weak_alias(syscall, _syscall)
   7 #endif
   8
   9 int _syscall(endpoint_t who, int syscallnr, message *msgptr)
  10 {
  11   int status;
  12
  13   msgptr->m_type = syscallnr;
  14   status = ipc_sendrec(who, msgptr);
  15   if (status != 0) {
  16         /* 'ipc_sendrec' itself failed. */
  17         /* XXX - strerror doesn't know all the codes */
  18         msgptr->m_type = status;
  19   }
  20   if (msgptr->m_type < 0) {
  21         errno = -msgptr->m_type;
  22         return(-1);
  23   }
  24   return(msgptr->m_type);
  25 }