minix/lib/libsys/getepinfo.c

   1 #include "syslib.h"
   2 #include <string.h>
   3 #include <unistd.h>
   4
   5 #include <sys/socket.h>
   6
   7 pid_t
   8 getepinfo(endpoint_t proc_ep, uid_t *uid, gid_t *gid)
   9 {
  10         message m;
  11         int r;
  12
  13         memset(&m, 0, sizeof(m));
  14         m.m_lsys_pm_getepinfo.endpt = proc_ep;
  15         m.m_lsys_pm_getepinfo.groups = (vir_bytes)NULL;
  16         m.m_lsys_pm_getepinfo.ngroups = 0;
  17
  18         if ((r = _taskcall(PM_PROC_NR, PM_GETEPINFO, &m)) < 0)
  19                 return r;
  20
  21         if (uid != NULL)
  22                 *uid = m.m_pm_lsys_getepinfo.euid;
  23         if (gid != NULL)
  24                 *gid = m.m_pm_lsys_getepinfo.egid;
  25         return (pid_t) r;
  26 }
  27
  28 pid_t
  29 getnpid(endpoint_t proc_ep)
  30 {
  31         return getepinfo(proc_ep, NULL, NULL);
  32 }
  33
  34 uid_t
  35 getnuid(endpoint_t proc_ep)
  36 {
  37         uid_t uid;
  38         int r;
  39
  40         if ((r = getepinfo(proc_ep, &uid, NULL)) < 0)
  41                 return (uid_t) r;
  42
  43         return uid;
  44 }
  45
  46 gid_t
  47 getngid(endpoint_t proc_ep)
  48 {
  49         gid_t gid;
  50         int r;
  51
  52         if ((r = getepinfo(proc_ep, NULL, &gid)) < 0)
  53                 return (gid_t) r;
  54
  55         return gid;
  56 }
  57
  58 int
  59 getsockcred(endpoint_t proc_ep, struct sockcred * sockcred, gid_t * groups,
  60         int ngroups)
  61 {
  62         message m;
  63         int r;
  64
  65         memset(&m, 0, sizeof(m));
  66         m.m_lsys_pm_getepinfo.endpt = proc_ep;
  67         m.m_lsys_pm_getepinfo.groups = (vir_bytes)groups;
  68         m.m_lsys_pm_getepinfo.ngroups = ngroups;
  69
  70         if ((r = _taskcall(PM_PROC_NR, PM_GETEPINFO, &m)) < 0)
  71                 return r;
  72
  73         sockcred->sc_uid = m.m_pm_lsys_getepinfo.uid;
  74         sockcred->sc_euid = m.m_pm_lsys_getepinfo.euid;
  75         sockcred->sc_gid = m.m_pm_lsys_getepinfo.gid;
  76         sockcred->sc_egid = m.m_pm_lsys_getepinfo.egid;
  77         sockcred->sc_ngroups = m.m_pm_lsys_getepinfo.ngroups;
  78
  79         return OK;
  80 }