src/afs/UKERNEL/osi_machdep.h

   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 /*
  11  * UKERNEL OSI header file. Extends afs_osi.h.
  12  *
  13  * afs_osi.h includes this file, which is the only way this file should
  14  * be included in a source file. This file can redefine macros declared in
  15  * afs_osi.h.
  16  */
  17
  18 #ifndef _OSI_MACHDEP_H_
  19 #define _OSI_MACHDEP_H_
  20
  21 #include "afs/sysincludes.h"
  22
  23 #define MAX_OSI_PATH            1024
  24 #define MAX_OSI_FILES           1024
  25 #define MAX_OSI_LINKS           25
  26 #define OSI_WAITHASH_SIZE       128     /* must be power of two */
  27 #define MAX_HOSTADDR            32
  28
  29 /* XXX
  30  *
  31  * UKERNEL cannot trivially make use of typedef for afs_ucred_t and
  32  * afs_proc_t, as in the present design, the types are already introduced
  33  * with incorrect reference, so fall back to preprocessor for now
  34  */
  35
  36 #define afs_ucred_t struct usr_ucred
  37 #define afs_proc_t struct usr_proc
  38
  39 #define AFS_KALLOC(A)           afs_osi_Alloc(A)
  40
  41 /*
  42  * Time related macros
  43  */
  44 #define afs_hz      HZ
  45 #define osi_Time() (time(NULL))
  46
  47 #undef gop_lookupname
  48 #define gop_lookupname(fnamep,segflg,followlink,compvpp) lookupname((fnamep),(segflg),(followlink),(compvpp))
  49 #undef gop_lookupname_user
  50 #define gop_lookupname_user(fnamep,segflg,followlink,compvpp) lookupname((fnamep),(segflg),(followlink),(compvpp))
  51
  52 #define osi_vnhold(avc, r)  do { VN_HOLD(AFSTOV(avc)); } while(0)
  53
  54 #if 0
  55 #define afs_suser(x)        suser(x)
  56 #endif
  57 /*
  58  * Global lock support.
  59  */
  60
  61 extern usr_thread_t afs_global_owner;
  62 extern usr_mutex_t afs_global_lock;
  63
  64 #define ISAFS_GLOCK() (usr_thread_self() == afs_global_owner)
  65
  66 #define AFS_GLOCK() \
  67     do { \
  68         usr_mutex_lock(&afs_global_lock); \
  69         afs_global_owner = usr_thread_self(); \
  70     } while(0)
  71 #define AFS_GUNLOCK() \
  72     do { \
  73         AFS_ASSERT_GLOCK(); \
  74         memset(&afs_global_owner, 0, sizeof(usr_thread_t)); \
  75         usr_mutex_unlock(&afs_global_lock); \
  76     } while(0)
  77 #define AFS_ASSERT_GLOCK() \
  78     do { if (!ISAFS_GLOCK()) { osi_Panic("afs global lock not held"); } } while(0)
  79 #define osi_GlockInit() \
  80     usr_mutex_init(&afs_global_lock, "afs_global_lock", MUTEX_DEFAULT, NULL)
  81
  82 extern int afs_bufferpages;
  83
  84 extern int afs_suser(void *credp);
  85
  86 #define setuerror(erval) get_user_struct()->u_error = (erval)
  87 #define getuerror(erval) get_user_struct()->u_error
  88 #define osi_curcred()    get_user_struct()->u_cred
  89
  90 #define osi_procname(procname, size) strncpy(procname, "(unknown)", size)
  91 #endif /* _OSI_MACHDEP_H_ */