lib/libsys/taskcall.c

   1 /* _taskcall() is the same as _syscall() except it returns negative error
   2  * codes directly and not in errno.  This is a better interface for PM and
   3  * VFS.
   4  */
   5
   6 #include <lib.h>
   7 #include <minix/syslib.h>
   8
   9 int _taskcall(who, syscallnr, msgptr)
  10 endpoint_t who;
  11 int syscallnr;
  12 register message *msgptr;
  13 {
  14   int status;
  15
  16   msgptr->m_type = syscallnr;
  17   status = ipc_sendrec(who, msgptr);
  18   if (status != 0) return(status);
  19   return(msgptr->m_type);
  20 }