lib/libc/sys-minix/getrusage.c

   1 #include <sys/cdefs.h>
   2 #include "namespace.h"
   3 #include <lib.h>
   4
   5 #include <string.h>
   6 #include <unistd.h>
   7 #include <sys/resource.h>
   8
   9 int getrusage(int who, struct rusage *r_usage)
  10 {
  11         int rc;
  12         message m;
  13
  14         memset(&m, 0, sizeof(m));
  15         m.m_lc_pm_rusage.who = who;
  16         m.m_lc_pm_rusage.addr = (vir_bytes)r_usage;
  17
  18         if (r_usage == NULL) {
  19                 errno = EFAULT;
  20                 return -1;
  21         }
  22         if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) {
  23                 errno = EINVAL;
  24                 return -1;
  25         }
  26
  27         memset(r_usage, 0, sizeof(struct rusage));
  28         if ((rc = _syscall(PM_PROC_NR, PM_GETRUSAGE, &m)) < 0)
  29                 return rc;
  30
  31         memset(&m, 0, sizeof(m));
  32         m.m_lc_vfs_rusage.addr = (vir_bytes)r_usage;
  33         if ((rc = _syscall(VFS_PROC_NR, VFS_GETRUSAGE, &m)) < 0)
  34                 return rc;
  35
  36         memset(&m, 0, sizeof(m));
  37         m.m_lc_vm_rusage.addr = (vir_bytes)r_usage;
  38         return _syscall(VM_PROC_NR, VM_GETRUSAGE, &m);
  39 }