HCoop / hcoop / debian / openafs.git / blame
| Commit | Line | Data |
|---|---|---|
| 805e021f CE |
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 | #ifndef AFS_VICE_H | |
| 11 | #define AFS_VICE_H 1 | |
| 12 | ||
| 13 | #include <sys/types.h> | |
| 14 | #if !defined(AFS_NT40_ENV) | |
| 15 | # if (!defined(AFS_FBSD80_ENV) && !defined(AFS_LINUX26_ENV)) || !defined(KERNEL) || defined(UKERNEL) | |
| 16 | # include <sys/ioctl.h> | |
| 17 | # endif | |
| 18 | #endif /* AFS_NT40_ENV */ | |
| 19 | #if (defined(__sun) && defined(__SVR4)) || defined(AFS_DFBSD_ENV) || defined(AFS_USR_DFBSD_ENV) | |
| 20 | # include <sys/ioccom.h> | |
| 21 | #endif | |
| 22 | ||
| 23 | /* | |
| 24 | * Structures used to pass data into AFS ioctls. The buffer pointers may be | |
| 25 | * null, or the counts may be 0 if there are no input or output parameters. | |
| 26 | */ | |
| 27 | ||
| 28 | #if defined(KERNEL) | |
| 29 | /* A fixed size, whether the kernel uses the ILP32 or LP64 data models. */ | |
| 30 | struct ViceIoctl32 { | |
| 31 | unsigned int in, out; /* Data to be transferred in, or out */ | |
| 32 | short in_size; /* Size of input buffer <= 2K */ | |
| 33 | short out_size; /* Maximum size of output buffer, <= 2K */ | |
| 34 | }; | |
| 35 | #endif | |
| 36 | ||
| 37 | /* Windows uses a different structure layout, defined in sys/pioctl_nt.h. */ | |
| 38 | #ifndef AFS_NT40_ENV | |
| 39 | struct ViceIoctl { | |
| 40 | caddr_t in, out; /* Data to be transferred in, or out */ | |
| 41 | short in_size; /* Size of input buffer <= 2K */ | |
| 42 | short out_size; /* Maximum size of output buffer, <= 2K */ | |
| 43 | }; | |
| 44 | #endif | |
| 45 | ||
| 46 | /* | |
| 47 | * The structure argument to _IOW() is used to add a structure size component | |
| 48 | * to the _IOW() value, to help the kernel code identify how big a structure | |
| 49 | * the calling process is passing into a system call. | |
| 50 | * | |
| 51 | * In user space, struct ViceIoctl32 and struct ViceIoctl are the same except | |
| 52 | * on Digital Unix, where user space code is compiled in 64-bit mode. | |
| 53 | * | |
| 54 | * So, in kernel space, regardless whether it is compiled in 32-bit mode or | |
| 55 | * 64-bit mode, the kernel code can use the struct ViceIoctl32 version of | |
| 56 | * _IOW() to check the size of user space arguments -- except on Digital Unix | |
| 57 | * (or Linux on Alpha, since it's compatible with Digital Unix). We don't | |
| 58 | * care about other 64-bit Linux versions since they don't check this length. | |
| 59 | */ | |
| 60 | #if defined(KERNEL) && !defined(__alpha__) | |
| 61 | #define _VICEIOCTL(id) ((unsigned int) _IOW('V', id, struct ViceIoctl32)) | |
| 62 | #define _VICEIOCTL2(dev, id) ((unsigned int) _IOW(dev, id, struct ViceIoctl32)) | |
| 63 | #else | |
| 64 | #define _VICEIOCTL(id) ((unsigned int) _IOW('V', id, struct ViceIoctl)) | |
| 65 | #define _VICEIOCTL2(dev, id) ((unsigned int) _IOW(dev, id, struct ViceIoctl)) | |
| 66 | #endif | |
| 67 | #define _CVICEIOCTL(id) _VICEIOCTL2('C', id) | |
| 68 | #define _OVICEIOCTL(id) _VICEIOCTL2('O', id) | |
| 69 | ||
| 70 | /* | |
| 71 | * Use these macros to define up to 256 vice ioctls in each space. These | |
| 72 | * ioctls all potentially have in/out parameters, depending on the values in | |
| 73 | * the ViceIoctl structure. This structure is passed into the kernel by the | |
| 74 | * normal ioctl parameter passing mechanism. | |
| 75 | * | |
| 76 | * See <http://grand.central.org/numbers/pioctls.html> for the definition of | |
| 77 | * the namespaces. | |
| 78 | */ | |
| 79 | ||
| 80 | #endif /* AFS_VICE_H */ |