| 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_ */ |