| 1 | /* $Id: odin32validate.h,v 1.2 2000-04-16 04:06:11 bird Exp $
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| 2 | *
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| 3 | * Parameter validation macros.
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| 4 | *
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| 5 | * Note that these are not fully implemented yet. Pointers and memory areas
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| 6 | * are not checked if valid yet, since this requires some more effort. So,
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| 7 | * for the time being pointers and memory areas are checked agains the
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| 8 | * maximum user virtual address space limits.
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| 9 | *
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| 10 | * Copyright (c) 2000 knut st. osmundsen (knut.stange.osmundsen@pmsc.no)
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| 11 | *
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| 12 | * Project Odin Software License can be found in LICENSE.TXT
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| 13 | *
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| 14 | */
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| 15 | #ifndef _odin32validate_h_
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| 16 | #define _odin32validate_h_
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| 17 |
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| 18 | /**
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| 19 | * ADDRESS_SPACE_LIMIT holds the largest possible address in the user virtual
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| 20 | * address virtual space + 1.
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| 21 | * 3GB is the higest possible address in the user virtual address space in OS/2.
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| 22 | */
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| 23 | #define ADDRESS_SPACE_LIMIT 0xc0000000
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| 24 |
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| 25 |
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| 26 | /**
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| 27 | * Validates that the specified pointer points at valid.
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| 28 | * (Currently it only check that it's within the user virtual address space.)
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| 29 | * @returns TRUE if valid.
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| 30 | * FALSE if invalid.
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| 31 | * @param p Pointer value.
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| 32 | */
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| 33 | #define VALID_PTR(p) \
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| 34 | ((char*)(p) >= (char*)0x10000 \
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| 35 | && (char*)(p) < (char*)ADDRESS_SPACE_LIMIT)
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| 36 |
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| 37 |
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| 38 | /**
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| 39 | * Validates that the area pointed to is valid.
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| 40 | * (Currently it only check that it's within the user virtual address space.)
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| 41 | * @returns TRUE if valid.
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| 42 | * FALSE if invalid.
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| 43 | * @param p Pointer value.
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| 44 | * @param cb Size of data pointer to by the pointer.
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| 45 | */
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| 46 | #define VALID_PTRSIZE(p, cb) \
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| 47 | ((char*)(p) >= (char*)0x10000 \
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| 48 | && (char*)(p) < (char*)ADDRESS_SPACE_LIMIT \
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| 49 | && (char*)(p) + (unsigned)(cb) < (char*)ADDRESS_SPACE_LIMIT)
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| 50 |
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| 51 |
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| 52 | /**
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| 53 | * Validates that a string pointer is valid and that the entire string is valid.
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| 54 | * (Currently it only checks that the first byte of the string is within
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| 55 | * the user virtual address space.)
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| 56 | * @returns TRUE if valid.
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| 57 | * FALSE if invalid.
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| 58 | * @param psz String pointer.
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| 59 | * @param cchMax Max string length
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| 60 | */
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| 61 | #define VALID_PSZ(psz) \
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| 62 | (VALID_PTRSIZE(psz, 1))
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| 63 |
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| 64 | /**
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| 65 | * Validates that a string less or equal to a given max length.
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| 66 | * Note! the pointer isn't validated. That you'll have to do separatly using
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| 67 | * VALID_PSZ(psz) which is defined right above.
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| 68 | * @returns TRUE if valid.
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| 69 | * FALSE if invalid.
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| 70 | * @param psz String pointer.
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| 71 | * @param cchMax Max string length
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| 72 | */
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| 73 | #define VALID_PSZMAXSIZE(psz, cchMax) \
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| 74 | (strlen(psz) <= cchMax)
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| 75 |
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| 76 |
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| 77 |
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| 78 | #endif /* !defined(_odin32validate_h_) */
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