aboutsummaryrefslogtreecommitdiffstats
path: root/main/zfs-grsec/0007-Remove-complicated-libspl-assert-wrappers.patch
blob: 74e8a747c6918a7c7a84352fb88eb508bce291b8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
From bd123ed53786910cfdcfa7f3a983a268a5951fb0 Mon Sep 17 00:00:00 2001
From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Tue, 1 Mar 2016 15:45:43 +0100
Subject: [PATCH 7/8] Remove complicated libspl assert wrappers

Effectively provide our own version of assert()/verify() for use
in user space.  This minimizes our dependencies and aligns the
user space assertion handling with what's used in the kernel.

Signed-off-by: Carlo Landmeter <clandmeter@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #4449
---
 include/libzfs_impl.h       |  5 ---
 lib/libspl/include/assert.h | 82 ++++++++++++++++++++-------------------------
 2 files changed, 36 insertions(+), 51 deletions(-)

diff --git a/include/libzfs_impl.h b/include/libzfs_impl.h
index e805e3e..ff02fa7 100644
--- a/include/libzfs_impl.h
+++ b/include/libzfs_impl.h
@@ -46,11 +46,6 @@
 extern "C" {
 #endif
 
-#ifdef	VERIFY
-#undef	VERIFY
-#endif
-#define	VERIFY	verify
-
 typedef struct libzfs_fru {
 	char *zf_device;
 	char *zf_fru;
diff --git a/lib/libspl/include/assert.h b/lib/libspl/include/assert.h
index 52924e8..6226872 100644
--- a/lib/libspl/include/assert.h
+++ b/lib/libspl/include/assert.h
@@ -32,68 +32,54 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-#ifndef __assert_c99
-static inline void
-__assert_c99(const char *expr, const char *file, int line, const char *func)
+static inline int
+libspl_assert(const char *buf, const char *file, const char *func, int line)
 {
-	fprintf(stderr, "%s:%i: %s: Assertion `%s` failed.\n",
-		file, line, func, expr);
+	fprintf(stderr, "%s\n", buf);
+	fprintf(stderr, "ASSERT at %s:%d:%s()", file, line, func);
 	abort();
 }
-#endif  /* __assert_c99 */
-
-#ifndef verify
-#if defined(__STDC__)
-#if __STDC_VERSION__ - 0 >= 199901L
-#define	verify(EX) (void)((EX) || \
-	(__assert_c99(#EX, __FILE__, __LINE__, __func__), 0))
-#else
-#define	verify(EX) (void)((EX) || (__assert(#EX, __FILE__, __LINE__), 0))
-#endif  /* __STDC_VERSION__ - 0 >= 199901L */
-#else
-#define	verify(EX) (void)((EX) || (_assert("EX", __FILE__, __LINE__), 0))
-#endif	/* __STDC__ */
-#endif  /* verify */
-
-#undef VERIFY
-#undef ASSERT
 
-#define	VERIFY	verify
-#define	ASSERT	assert
+#ifdef verify
+#undef verify
+#endif
 
-extern void __assert(const char *, const char *, int);
+#define	VERIFY(cond)							\
+	(void) ((!(cond)) &&						\
+	    libspl_assert(#cond, __FILE__, __FUNCTION__, __LINE__))
+#define	verify(cond)							\
+	(void) ((!(cond)) &&						\
+	    libspl_assert(#cond, __FILE__, __FUNCTION__, __LINE__))
 
-static inline int
-assfail(const char *buf, const char *file, int line)
-{
-	__assert(buf, file, line);
-	return (0);
-}
-
-/* BEGIN CSTYLED */
-#define	VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
-	const TYPE __left = (TYPE)(LEFT); \
-	const TYPE __right = (TYPE)(RIGHT); \
-	if (!(__left OP __right)) { \
-		char *__buf = alloca(256); \
-		(void) snprintf(__buf, 256, "%s %s %s (0x%llx %s 0x%llx)", \
-			#LEFT, #OP, #RIGHT, \
-			(u_longlong_t)__left, #OP, (u_longlong_t)__right); \
-		assfail(__buf, __FILE__, __LINE__); \
-	} \
+#define	VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE)				\
+do {									\
+	const TYPE __left = (TYPE)(LEFT);				\
+	const TYPE __right = (TYPE)(RIGHT);				\
+	if (!(__left OP __right)) {					\
+		char *__buf = alloca(256);				\
+		(void) snprintf(__buf, 256,				\
+		    "%s %s %s (0x%llx %s 0x%llx)", #LEFT, #OP, #RIGHT,	\
+		    (u_longlong_t)__left, #OP, (u_longlong_t)__right);	\
+		libspl_assert(__buf, __FILE__, __FUNCTION__, __LINE__);	\
+	}								\
 } while (0)
-/* END CSTYLED */
 
 #define	VERIFY3S(x, y, z)	VERIFY3_IMPL(x, y, z, int64_t)
 #define	VERIFY3U(x, y, z)	VERIFY3_IMPL(x, y, z, uint64_t)
 #define	VERIFY3P(x, y, z)	VERIFY3_IMPL(x, y, z, uintptr_t)
 #define	VERIFY0(x)		VERIFY3_IMPL(x, ==, 0, uint64_t)
 
+#ifdef assert
+#undef assert
+#endif
+
 #ifdef NDEBUG
 #define	ASSERT3S(x, y, z)	((void)0)
 #define	ASSERT3U(x, y, z)	((void)0)
 #define	ASSERT3P(x, y, z)	((void)0)
 #define	ASSERT0(x)		((void)0)
+#define	ASSERT(x)		((void)0)
+#define	assert(x)		((void)0)
 #define	ASSERTV(x)
 #define	IMPLY(A, B)		((void)0)
 #define	EQUIV(A, B)		((void)0)
@@ -102,13 +88,17 @@ assfail(const char *buf, const char *file, int line)
 #define	ASSERT3U(x, y, z)	VERIFY3U(x, y, z)
 #define	ASSERT3P(x, y, z)	VERIFY3P(x, y, z)
 #define	ASSERT0(x)		VERIFY0(x)
+#define	ASSERT(x)		VERIFY(x)
+#define	assert(x)		VERIFY(x)
 #define	ASSERTV(x)		x
 #define	IMPLY(A, B) \
 	((void)(((!(A)) || (B)) || \
-	    assfail("(" #A ") implies (" #B ")", __FILE__, __LINE__)))
+	    libspl_assert("(" #A ") implies (" #B ")", \
+	    __FILE__, __FUNCTION__, __LINE__)))
 #define	EQUIV(A, B) \
 	((void)((!!(A) == !!(B)) || \
-	    assfail("(" #A ") is equivalent to (" #B ")", __FILE__, __LINE__)))
+	    libspl_assert("(" #A ") is equivalent to (" #B ")", \
+	    __FILE__, __FUNCTION__, __LINE__)))
 
 #endif  /* NDEBUG */
 
-- 
2.7.4