2 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #ifndef STRACE_TESTS_H
29 #define STRACE_TESTS_H
35 # include <sys/types.h>
36 # include "kernel_types.h"
37 # include "gcc_compat.h"
39 /* Tests of "strace -v" are expected to define VERBOSE to 1. */
44 /* Cached sysconf(_SC_PAGESIZE). */
45 size_t get_page_size(void);
47 /* The size of kernel's sigset_t. */
48 unsigned int get_sigset_size(void);
50 /* Print message and strerror(errno) to stderr, then exit(1). */
51 void perror_msg_and_fail(const char *, ...)
52 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
53 /* Print message to stderr, then exit(1). */
54 void error_msg_and_fail(const char *, ...)
55 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
56 /* Print message to stderr, then exit(77). */
57 void error_msg_and_skip(const char *, ...)
58 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
59 /* Print message and strerror(errno) to stderr, then exit(77). */
60 void perror_msg_and_skip(const char *, ...)
61 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
63 /* Stat the specified file and skip the test if the stat call failed. */
64 void skip_if_unavailable(const char *);
67 * Allocate memory that ends on the page boundary.
68 * Pages allocated by this call are preceeded by an unmapped page
69 * and followed also by an unmapped page.
71 void *tail_alloc(const size_t)
72 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
73 /* Allocate memory using tail_alloc, then memcpy. */
74 void *tail_memdup(const void *, const size_t)
75 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((2));
78 * Allocate an object of the specified type at the end
79 * of a mapped memory region.
80 * Assign its address to the specified constant pointer.
82 #define TAIL_ALLOC_OBJECT_CONST_PTR(type_name, type_ptr) \
83 type_name *const type_ptr = tail_alloc(sizeof(*type_ptr))
86 * Allocate an object of the specified type at the end
87 * of a mapped memory region.
88 * Assign its address to the specified variable pointer.
90 #define TAIL_ALLOC_OBJECT_VAR_PTR(type_name, type_ptr) \
91 type_name *type_ptr = tail_alloc(sizeof(*type_ptr))
94 * Fill memory (pointed by ptr, having size bytes) with different bytes (with
95 * values starting with start and resetting every period) in order to catch
96 * sign, byte order and/or alignment errors.
98 void fill_memory_ex(void *ptr, size_t size, unsigned char start,
99 unsigned char period);
100 /* Shortcut for fill_memory_ex(ptr, size, 0x80, 0x80) */
101 void fill_memory(void *ptr, size_t size);
103 /* Close stdin, move stdout to a non-standard descriptor, and print. */
104 void tprintf(const char *, ...)
105 ATTRIBUTE_FORMAT((printf, 1, 2));
107 /* Make a hexdump copy of C string */
108 const char *hexdump_strdup(const char *);
110 /* Make a hexdump copy of memory */
111 const char *hexdump_memdup(const char *, size_t);
113 /* Make a hexquoted copy of a string */
114 const char *hexquote_strndup(const char *, size_t);
116 /* Return inode number of socket descriptor. */
117 unsigned long inode_of_sockfd(int);
119 /* Print string in a quoted form. */
120 void print_quoted_string(const char *);
122 /* Print memory in a quoted form. */
123 void print_quoted_memory(const char *, size_t);
125 /* Print time_t and nanoseconds in symbolic format. */
126 void print_time_t_nsec(time_t, unsigned long long);
128 /* Read an int from the file. */
129 int read_int_from_file(const char *, int *);
131 /* Check whether given uid matches kernel overflowuid. */
132 void check_overflowuid(const int);
134 /* Check whether given gid matches kernel overflowgid. */
135 void check_overflowgid(const int);
137 /* Translate errno to its name. */
138 const char *errno2name(void);
140 /* Translate signal number to its name. */
141 const char *signal2name(int);
143 /* Print return code and, in case return code is -1, errno information. */
144 const char *sprintrc(long rc);
145 /* sprintrc variant suitable for usage as part of grep pattern. */
146 const char *sprintrc_grep(long rc);
150 /* Print flags in symbolic form according to xlat table. */
151 int printflags(const struct xlat *, const unsigned long long, const char *);
153 /* Print constant in symbolic form according to xlat table. */
154 int printxval(const struct xlat *, const unsigned long long, const char *);
156 /* Invoke a socket syscall, either directly or via __NR_socketcall. */
157 int socketcall(const int nr, const int call,
158 long a1, long a2, long a3, long a4, long a5);
160 /* Wrappers for recvmmsg and sendmmsg syscalls. */
163 int recv_mmsg(int, struct mmsghdr *, unsigned int, unsigned int, struct timespec *);
164 int send_mmsg(int, struct mmsghdr *, unsigned int, unsigned int);
166 /* Create a pipe with maximized descriptor numbers. */
167 void pipe_maxfd(int pipefd[2]);
169 #define F8ILL_KULONG_SUPPORTED (sizeof(void *) < sizeof(kernel_ulong_t))
170 #define F8ILL_KULONG_MASK ((kernel_ulong_t) 0xffffffff00000000ULL)
173 * For 64-bit kernel_ulong_t and 32-bit pointer,
174 * return a kernel_ulong_t value by filling higher bits.
175 * For other architertures, return the original pointer.
177 static inline kernel_ulong_t
178 f8ill_ptr_to_kulong(const void *const ptr)
180 const unsigned long uptr = (unsigned long) ptr;
181 return F8ILL_KULONG_SUPPORTED
182 ? F8ILL_KULONG_MASK | uptr : (kernel_ulong_t) uptr;
185 # define ARRAY_SIZE(arg) ((unsigned int) (sizeof(arg) / sizeof((arg)[0])))
186 # define LENGTH_OF(arg) ((unsigned int) sizeof(arg) - 1)
188 /* Zero-extend a signed integer type to unsigned long long. */
189 #define zero_extend_signed_to_ull(v) \
190 (sizeof(v) == sizeof(char) ? (unsigned long long) (unsigned char) (v) : \
191 sizeof(v) == sizeof(short) ? (unsigned long long) (unsigned short) (v) : \
192 sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
193 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
194 (unsigned long long) (v))
196 /* Sign-extend an unsigned integer type to long long. */
197 #define sign_extend_unsigned_to_ll(v) \
198 (sizeof(v) == sizeof(char) ? (long long) (char) (v) : \
199 sizeof(v) == sizeof(short) ? (long long) (short) (v) : \
200 sizeof(v) == sizeof(int) ? (long long) (int) (v) : \
201 sizeof(v) == sizeof(long) ? (long long) (long) (v) : \
204 # define SKIP_MAIN_UNDEFINED(arg) \
205 int main(void) { error_msg_and_skip("undefined: %s", arg); }
208 * The kernel used to define 64-bit types on 64-bit systems on a per-arch
209 * basis. Some architectures would use unsigned long and others would use
210 * unsigned long long. These types were exported as part of the
211 * kernel-userspace ABI and now must be maintained forever. This matches
212 * what the kernel exports for each architecture so we don't need to cast
213 * every printing of __u64 or __s64 to stdint types.
215 # if SIZEOF_LONG == 4
216 # define PRI__64 "ll"
217 # elif defined ALPHA || defined IA64 || defined MIPS || defined POWERPC
220 # define PRI__64 "ll"
223 # define PRI__d64 PRI__64"d"
224 # define PRI__u64 PRI__64"u"
225 # define PRI__x64 PRI__64"x"
228 # define LL_PAIR(HI, LO) (HI), (LO)
230 # define LL_PAIR(HI, LO) (LO), (HI)
232 # define LL_VAL_TO_PAIR(llval) LL_PAIR((long) ((llval) >> 32), (long) (llval))
234 # define _STR(_arg) #_arg
235 # define ARG_STR(_arg) (_arg), #_arg
236 # define ARG_ULL_STR(_arg) _arg##ULL, #_arg
238 #endif /* !STRACE_TESTS_H */