src/afs/DARWIN/osi_gcpags.c

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 #include <afsconfig.h>
  11 #include "afs/param.h"
  12
  13
  14 #include "afs/sysincludes.h"    /* Standard vendor system headers */
  15 #include "afsincludes.h"        /* Afs-based standard headers */
  16 #include "afs/afs_stats.h"      /* afs statistics */
  17
  18 #if AFS_GCPAGS
  19
  20 /* afs_osi_TraverseProcTable() - Walk through the systems process
  21  * table, calling afs_GCPAGs_perproc_func() for each process.
  22  */
  23
  24
  25 #if (defined(AFS_DARWIN_ENV) && !defined(AFS_DARWIN80_ENV))
  26 void
  27 afs_osi_TraverseProcTable(void)
  28 {
  29     afs_proc_t *p;
  30     LIST_FOREACH(p, &allproc, p_list) {
  31         if (p->p_stat == SIDL)
  32             continue;
  33         if (p->p_stat == SZOMB)
  34             continue;
  35         if (p->p_flag & P_SYSTEM)
  36             continue;
  37         afs_GCPAGs_perproc_func(p);
  38     }
  39 }
  40 #endif
  41
  42 /* return a pointer (sometimes a static copy ) to the cred for a
  43  * given afs_proc_t.
  44  * subsequent calls may overwrite the previously returned value.
  45  */
  46
  47 #if defined(AFS_DARWIN80_ENV)
  48
  49 const afs_ucred_t *
  50 afs_osi_proc2cred(afs_proc_t * pr)
  51 {
  52     afs_ucred_t *rv = NULL;
  53     static afs_ucred_t cr;
  54     struct ucred *pcred;
  55
  56     if (pr == NULL) {
  57         return NULL;
  58     }
  59     pcred = proc_ucred(pr);
  60     cr.cr_ref = 1;
  61     afs_set_cr_uid(&cr, afs_cr_uid(pcred));
  62     cr.cr_ngroups = pcred->cr_ngroups;
  63     memcpy(cr.cr_groups, pcred->cr_groups,
  64            NGROUPS * sizeof(gid_t));
  65     return &cr;
  66 }
  67 #else
  68
  69 const afs_ucred_t *
  70 afs_osi_proc2cred(afs_proc_t * pr)
  71 {
  72     afs_ucred_t *rv = NULL;
  73     static afs_ucred_t cr;
  74
  75     if (pr == NULL) {
  76         return NULL;
  77     }
  78
  79     if ((pr->p_stat == SSLEEP) || (pr->p_stat == SRUN)
  80         || (pr->p_stat == SSTOP)) {
  81         pcred_readlock(pr);
  82         cr.cr_ref = 1;
  83         afs_set_cr_uid(&cr, afs_cr_uid(pr->p_cred->pc_ucred));
  84         cr.cr_ngroups = pr->p_cred->pc_ucred->cr_ngroups;
  85         memcpy(cr.cr_groups, pr->p_cred->pc_ucred->cr_groups,
  86                NGROUPS * sizeof(gid_t));
  87         pcred_unlock(pr);
  88         rv = &cr;
  89     }
  90
  91     return rv;
  92 }
  93
  94 #endif
  95
  96 #endif /* AFS_GCPAGS */