diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-parisc/ioctl.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-parisc/ioctl.h')
-rw-r--r-- | include/asm-parisc/ioctl.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/include/asm-parisc/ioctl.h b/include/asm-parisc/ioctl.h new file mode 100644 index 000000000000..68338d2bda4e --- /dev/null +++ b/include/asm-parisc/ioctl.h | |||
@@ -0,0 +1,93 @@ | |||
1 | /* | ||
2 | * Linux/PA-RISC Project (http://www.parisc-linux.org/) | ||
3 | * Copyright (C) 1999,2003 Matthew Wilcox < willy at debian . org > | ||
4 | * portions from "linux/ioctl.h for Linux" by H.H. Bergman. | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License | ||
17 | * along with this program; if not, write to the Free Software | ||
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
19 | */ | ||
20 | |||
21 | |||
22 | #ifndef _ASM_PARISC_IOCTL_H | ||
23 | #define _ASM_PARISC_IOCTL_H | ||
24 | |||
25 | /* ioctl command encoding: 32 bits total, command in lower 16 bits, | ||
26 | * size of the parameter structure in the lower 14 bits of the | ||
27 | * upper 16 bits. | ||
28 | * Encoding the size of the parameter structure in the ioctl request | ||
29 | * is useful for catching programs compiled with old versions | ||
30 | * and to avoid overwriting user space outside the user buffer area. | ||
31 | * The highest 2 bits are reserved for indicating the ``access mode''. | ||
32 | * NOTE: This limits the max parameter size to 16kB -1 ! | ||
33 | */ | ||
34 | |||
35 | #define _IOC_NRBITS 8 | ||
36 | #define _IOC_TYPEBITS 8 | ||
37 | #define _IOC_SIZEBITS 14 | ||
38 | #define _IOC_DIRBITS 2 | ||
39 | |||
40 | #define _IOC_NRMASK ((1 << _IOC_NRBITS)-1) | ||
41 | #define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1) | ||
42 | #define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1) | ||
43 | #define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1) | ||
44 | |||
45 | #define _IOC_NRSHIFT 0 | ||
46 | #define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS) | ||
47 | #define _IOC_SIZESHIFT (_IOC_TYPESHIFT+_IOC_TYPEBITS) | ||
48 | #define _IOC_DIRSHIFT (_IOC_SIZESHIFT+_IOC_SIZEBITS) | ||
49 | |||
50 | /* | ||
51 | * Direction bits. | ||
52 | */ | ||
53 | #define _IOC_NONE 0U | ||
54 | #define _IOC_WRITE 2U | ||
55 | #define _IOC_READ 1U | ||
56 | |||
57 | #define _IOC(dir,type,nr,size) \ | ||
58 | (((dir) << _IOC_DIRSHIFT) | \ | ||
59 | ((type) << _IOC_TYPESHIFT) | \ | ||
60 | ((nr) << _IOC_NRSHIFT) | \ | ||
61 | ((size) << _IOC_SIZESHIFT)) | ||
62 | |||
63 | /* provoke compile error for invalid uses of size argument */ | ||
64 | extern unsigned int __invalid_size_argument_for_IOC; | ||
65 | #define _IOC_TYPECHECK(t) \ | ||
66 | ((sizeof(t) == sizeof(t[1]) && \ | ||
67 | sizeof(t) < (1 << _IOC_SIZEBITS)) ? \ | ||
68 | sizeof(t) : __invalid_size_argument_for_IOC) | ||
69 | |||
70 | /* used to create numbers */ | ||
71 | #define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0) | ||
72 | #define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),(_IOC_TYPECHECK(size))) | ||
73 | #define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size))) | ||
74 | #define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size))) | ||
75 | #define _IOR_BAD(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size)) | ||
76 | #define _IOW_BAD(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size)) | ||
77 | #define _IOWR_BAD(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size)) | ||
78 | |||
79 | /* used to decode ioctl numbers.. */ | ||
80 | #define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) | ||
81 | #define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK) | ||
82 | #define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) | ||
83 | #define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK) | ||
84 | |||
85 | /* ...and for the drivers/sound files... */ | ||
86 | |||
87 | #define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT) | ||
88 | #define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT) | ||
89 | #define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT) | ||
90 | #define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT) | ||
91 | #define IOCSIZE_SHIFT (_IOC_SIZESHIFT) | ||
92 | |||
93 | #endif /* _ASM_PARISC_IOCTL_H */ | ||