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[/] [or1k/] [tags/] [LINUX_2_4_26_OR32/] [linux/] [linux-2.4/] [include/] [linux/] [intermezzo_lib.h] - Blame information for rev 1765

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/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
 * vim:expandtab:shiftwidth=8:tabstop=8:
 *
 * Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>
 *
 *   This file is part of InterMezzo, http://www.inter-mezzo.org.
 *
 *   InterMezzo is free software; you can redistribute it and/or
 *   modify it under the terms of version 2 of the GNU General Public
 *   License as published by the Free Software Foundation.
 *
 *   InterMezzo is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with InterMezzo; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Data structures unpacking/packing macros & inlines
 *
 */
 
#ifndef _INTERMEZZO_LIB_H
#define _INTERMEZZO_LIB_H
 
#ifdef __KERNEL__
# include <linux/types.h>
#else
# include <string.h>
# include <sys/types.h>
#endif
 
#undef MIN
#define MIN(a,b) (((a)<(b)) ? (a): (b))
#undef MAX
#define MAX(a,b) (((a)>(b)) ? (a): (b))
#define MKSTR(ptr) ((ptr))? (ptr) : ""
 
static inline int size_round (int val)
{
        return (val + 3) & (~0x3);
}
 
static inline int size_round0(int val)
{
        if (!val)
                return 0;
        return (val + 1 + 3) & (~0x3);
}
 
static inline size_t round_strlen(char *fset)
{
        return size_round(strlen(fset) + 1);
}
 
#ifdef __KERNEL__
# define NTOH__u32(var) le32_to_cpu(var)
# define NTOH__u64(var) le64_to_cpu(var)
# define HTON__u32(var) cpu_to_le32(var)
# define HTON__u64(var) cpu_to_le64(var)
#else
# include <glib.h>
# define NTOH__u32(var) GUINT32_FROM_LE(var)
# define NTOH__u64(var) GUINT64_FROM_LE(var)
# define HTON__u32(var) GUINT32_TO_LE(var)
# define HTON__u64(var) GUINT64_TO_LE(var)
#endif
 
/*
 * copy sizeof(type) bytes from pointer to var and move ptr forward.
 * return EFAULT if pointer goes beyond end
 */
#define UNLOGV(var,type,ptr,end)                \
do {                                            \
        var = *(type *)ptr;                     \
        ptr += sizeof(type);                    \
        if (ptr > end )                         \
                return -EFAULT;                 \
} while (0)
 
/* the following two macros convert to little endian */
/* type MUST be __u32 or __u64 */
#define LUNLOGV(var,type,ptr,end)               \
do {                                            \
        var = NTOH##type(*(type *)ptr);         \
        ptr += sizeof(type);                    \
        if (ptr > end )                         \
                return -EFAULT;                 \
} while (0)
 
/* now log values */
#define LOGV(var,type,ptr)                      \
do {                                            \
        *((type *)ptr) = var;                   \
        ptr += sizeof(type);                    \
} while (0)
 
/* and in network order */
#define LLOGV(var,type,ptr)                     \
do {                                            \
        *((type *)ptr) = HTON##type(var);       \
        ptr += sizeof(type);                    \
} while (0)
 
 
/*
 * set var to point at (type *)ptr, move ptr forward with sizeof(type)
 * return from function with EFAULT if ptr goes beyond end
 */
#define UNLOGP(var,type,ptr,end)                \
do {                                            \
        var = (type *)ptr;                      \
        ptr += sizeof(type);                    \
        if (ptr > end )                         \
                return -EFAULT;                 \
} while (0)
 
#define LOGP(var,type,ptr)                      \
do {                                            \
        memcpy(ptr, var, sizeof(type));         \
        ptr += sizeof(type);                    \
} while (0)
 
/*
 * set var to point at (char *)ptr, move ptr forward by size_round(len);
 * return from function with EFAULT if ptr goes beyond end
 */
#define UNLOGL(var,type,len,ptr,end)                    \
do {                                                    \
        if (len == 0)                                   \
                var = (type *)0;                        \
        else {                                          \
                var = (type *)ptr;                      \
                ptr += size_round(len * sizeof(type));  \
        }                                               \
        if (ptr > end )                                 \
                return -EFAULT;                         \
} while (0)
 
#define UNLOGL0(var,type,len,ptr,end)                           \
do {                                                            \
        UNLOGL(var,type,len+1,ptr,end);                         \
        if ( *((char *)ptr - size_round(len+1) + len) != '\0')  \
                        return -EFAULT;                         \
} while (0)
 
#define LOGL(var,len,ptr)                               \
do {                                                    \
        size_t __fill = size_round(len);                \
        /* Prevent data leakage. */                     \
        if (__fill > 0)                                 \
                memset((char *)ptr, 0, __fill);         \
        memcpy((char *)ptr, (const char *)var, len);    \
        ptr += __fill;                                  \
} while (0)
 
#define LOGL0(var,len,ptr)                              \
do {                                                    \
        if (!len) break;                                \
        memcpy((char *)ptr, (const char *)var, len);    \
        *((char *)(ptr) + len) = 0;                     \
        ptr += size_round(len + 1);                     \
} while (0)
 
#endif /* _INTERMEZZO_LIB_H */
 

Line No.	Rev	Author	Line
1	1275	phoenix	`/* -- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; --`
2			`* vim:expandtab:shiftwidth=8:tabstop=8:`
3			`*`
4			`* Copyright (C) 2001 Cluster File Systems, Inc. <braam@clusterfs.com>`
5			`*`
6			`* This file is part of InterMezzo, http://www.inter-mezzo.org.`
7			`*`
8			`* InterMezzo is free software; you can redistribute it and/or`
9			`* modify it under the terms of version 2 of the GNU General Public`
10			`* License as published by the Free Software Foundation.`
11			`*`
12			`* InterMezzo is distributed in the hope that it will be useful,`
13			`* but WITHOUT ANY WARRANTY; without even the implied warranty of`
14			`* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
15			`* GNU General Public License for more details.`
16			`*`
17			`* You should have received a copy of the GNU General Public License`
18			`* along with InterMezzo; if not, write to the Free Software`
19			`* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.`
20			`*`
21			`* Data structures unpacking/packing macros & inlines`
22			`*`
23			`*/`
24
25			`#ifndef _INTERMEZZO_LIB_H`
26			`#define _INTERMEZZO_LIB_H`
27
28			`#ifdef __KERNEL__`
29			`# include <linux/types.h>`
30			`#else`
31			`# include <string.h>`
32			`# include <sys/types.h>`
33			`#endif`
34
35			`#undef MIN`
36			`#define MIN(a,b) (((a)<(b)) ? (a): (b))`
37			`#undef MAX`
38			`#define MAX(a,b) (((a)>(b)) ? (a): (b))`
39			`#define MKSTR(ptr) ((ptr))? (ptr) : ""`
40
41			`static inline int size_round (int val)`
42			`{`
43			`return (val + 3) & (~0x3);`
44			`}`
45
46			`static inline int size_round0(int val)`
47			`{`
48			`if (!val)`
49			`return 0;`
50			`return (val + 1 + 3) & (~0x3);`
51			`}`
52
53			`static inline size_t round_strlen(char *fset)`
54			`{`
55			`return size_round(strlen(fset) + 1);`
56			`}`
57
58			`#ifdef __KERNEL__`
59			`# define NTOH__u32(var) le32_to_cpu(var)`
60			`# define NTOH__u64(var) le64_to_cpu(var)`
61			`# define HTON__u32(var) cpu_to_le32(var)`
62			`# define HTON__u64(var) cpu_to_le64(var)`
63			`#else`
64			`# include <glib.h>`
65			`# define NTOH__u32(var) GUINT32_FROM_LE(var)`
66			`# define NTOH__u64(var) GUINT64_FROM_LE(var)`
67			`# define HTON__u32(var) GUINT32_TO_LE(var)`
68			`# define HTON__u64(var) GUINT64_TO_LE(var)`
69			`#endif`
70
71			`/*`
72			`* copy sizeof(type) bytes from pointer to var and move ptr forward.`
73			`* return EFAULT if pointer goes beyond end`
74			`*/`
75			`#define UNLOGV(var,type,ptr,end) \`
76			`do { \`
77			`var = (type )ptr; \`
78			`ptr += sizeof(type); \`
79			`if (ptr > end ) \`
80			`return -EFAULT; \`
81			`} while (0)`
82
83			`/* the following two macros convert to little endian */`
84			`/* type MUST be __u32 or __u64 */`
85			`#define LUNLOGV(var,type,ptr,end) \`
86			`do { \`
87			`var = NTOH##type((type )ptr); \`
88			`ptr += sizeof(type); \`
89			`if (ptr > end ) \`
90			`return -EFAULT; \`
91			`} while (0)`
92
93			`/* now log values */`
94			`#define LOGV(var,type,ptr) \`
95			`do { \`
96			`((type )ptr) = var; \`
97			`ptr += sizeof(type); \`
98			`} while (0)`
99
100			`/* and in network order */`
101			`#define LLOGV(var,type,ptr) \`
102			`do { \`
103			`((type )ptr) = HTON##type(var); \`
104			`ptr += sizeof(type); \`
105			`} while (0)`
106
107
108			`/*`
109			`* set var to point at (type *)ptr, move ptr forward with sizeof(type)`
110			`* return from function with EFAULT if ptr goes beyond end`
111			`*/`
112			`#define UNLOGP(var,type,ptr,end) \`
113			`do { \`
114			`var = (type *)ptr; \`
115			`ptr += sizeof(type); \`
116			`if (ptr > end ) \`
117			`return -EFAULT; \`
118			`} while (0)`
119
120			`#define LOGP(var,type,ptr) \`
121			`do { \`
122			`memcpy(ptr, var, sizeof(type)); \`
123			`ptr += sizeof(type); \`
124			`} while (0)`
125
126			`/*`
127			`* set var to point at (char *)ptr, move ptr forward by size_round(len);`
128			`* return from function with EFAULT if ptr goes beyond end`
129			`*/`
130			`#define UNLOGL(var,type,len,ptr,end) \`
131			`do { \`
132			`if (len == 0) \`
133			`var = (type *)0; \`
134			`else { \`
135			`var = (type *)ptr; \`
136			`ptr += size_round(len * sizeof(type)); \`
137			`} \`
138			`if (ptr > end ) \`
139			`return -EFAULT; \`
140			`} while (0)`
141
142			`#define UNLOGL0(var,type,len,ptr,end) \`
143			`do { \`
144			`UNLOGL(var,type,len+1,ptr,end); \`
145			`if ( ((char )ptr - size_round(len+1) + len) != '\0') \`
146			`return -EFAULT; \`
147			`} while (0)`
148
149			`#define LOGL(var,len,ptr) \`
150			`do { \`
151			`size_t __fill = size_round(len); \`
152			`/* Prevent data leakage. */ \`
153			`if (__fill > 0) \`
154			`memset((char *)ptr, 0, __fill); \`
155			`memcpy((char )ptr, (const char )var, len); \`
156			`ptr += __fill; \`
157			`} while (0)`
158
159			`#define LOGL0(var,len,ptr) \`
160			`do { \`
161			`if (!len) break; \`
162			`memcpy((char )ptr, (const char )var, len); \`
163			`((char )(ptr) + len) = 0; \`
164			`ptr += size_round(len + 1); \`
165			`} while (0)`
166
167			`#endif /* _INTERMEZZO_LIB_H */`
168

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[/] [or1k/] [tags/] [LINUX_2_4_26_OR32/] [linux/] [linux-2.4/] [include/] [linux/] [intermezzo_lib.h] - Blame information for rev 1765