2 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
3 * Copyright (c) 2016-2018 The strace developers.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #ifndef STRACE_TESTS_H
30 #define STRACE_TESTS_H
36 #ifdef TESTS_SIZEOF_KERNEL_LONG_T
37 # undef SIZEOF_KERNEL_LONG_T
38 # define SIZEOF_KERNEL_LONG_T TESTS_SIZEOF_KERNEL_LONG_T
41 #ifdef TESTS_SIZEOF_LONG
43 # define SIZEOF_LONG TESTS_SIZEOF_LONG
47 #include <sys/types.h>
48 #include "kernel_types.h"
49 #include "gcc_compat.h"
53 * The printf-like function to use in header files
54 * shared between strace and its tests.
57 # define STRACE_PRINTF printf
60 /* Tests of "strace -v" are expected to define VERBOSE to 1. */
65 /* xlat verbosity defaults */
70 # define XLAT_VERBOSE 0
73 #ifndef DEFAULT_STRLEN
74 /* Default maximum # of bytes printed in printstr et al. */
75 # define DEFAULT_STRLEN 32
78 /* Cached sysconf(_SC_PAGESIZE). */
79 size_t get_page_size(void);
81 /* The size of kernel's sigset_t. */
82 unsigned int get_sigset_size(void);
84 /* Print message and strerror(errno) to stderr, then exit(1). */
85 void perror_msg_and_fail(const char *, ...)
86 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
87 /* Print message to stderr, then exit(1). */
88 void error_msg_and_fail(const char *, ...)
89 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
90 /* Print message to stderr, then exit(77). */
91 void error_msg_and_skip(const char *, ...)
92 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
93 /* Print message and strerror(errno) to stderr, then exit(77). */
94 void perror_msg_and_skip(const char *, ...)
95 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
97 #ifndef perror_msg_and_fail
98 # define perror_msg_and_fail(fmt_, ...) \
99 perror_msg_and_fail("%s:%d: " fmt_, __FILE__, __LINE__, ##__VA_ARGS__)
101 #ifndef perror_msg_and_fail
102 # define error_msg_and_fail(fmt_, ...) \
103 error_msg_and_fail("%s:%d: " fmt_, __FILE__, __LINE__, ##__VA_ARGS__)
106 /* Stat the specified file and skip the test if the stat call failed. */
107 void skip_if_unavailable(const char *);
110 * Allocate memory that ends on the page boundary.
111 * Pages allocated by this call are preceded by an unmapped page
112 * and followed also by an unmapped page.
114 void *tail_alloc(const size_t)
115 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
116 /* Allocate memory using tail_alloc, then memcpy. */
117 void *tail_memdup(const void *, const size_t)
118 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((2));
121 * Allocate an object of the specified type at the end
122 * of a mapped memory region.
123 * Assign its address to the specified constant pointer.
125 #define TAIL_ALLOC_OBJECT_CONST_PTR(type_name, type_ptr) \
126 type_name *const type_ptr = tail_alloc(sizeof(*type_ptr))
129 * Allocate an object of the specified type at the end
130 * of a mapped memory region.
131 * Assign its address to the specified variable pointer.
133 #define TAIL_ALLOC_OBJECT_VAR_PTR(type_name, type_ptr) \
134 type_name *type_ptr = tail_alloc(sizeof(*type_ptr))
137 * Fill memory (pointed by ptr, having size bytes) with different bytes (with
138 * values starting with start and resetting every period) in order to catch
139 * sign, byte order and/or alignment errors.
141 void fill_memory_ex(void *ptr, size_t size, unsigned char start,
142 unsigned char period);
143 /* Shortcut for fill_memory_ex(ptr, size, 0x80, 0x80) */
144 void fill_memory(void *ptr, size_t size);
146 /* Close stdin, move stdout to a non-standard descriptor, and print. */
147 void tprintf(const char *, ...)
148 ATTRIBUTE_FORMAT((printf, 1, 2));
150 /* Make a hexdump copy of C string */
151 const char *hexdump_strdup(const char *);
153 /* Make a hexdump copy of memory */
154 const char *hexdump_memdup(const char *, size_t);
156 /* Make a hexquoted copy of a string */
157 const char *hexquote_strndup(const char *, size_t);
159 /* Return inode number of socket descriptor. */
160 unsigned long inode_of_sockfd(int);
162 /* Print string in a quoted form with optional escape characters. */
163 void print_quoted_string_ex(const char *, bool quote, const char *escape_str);
165 /* Print string in a quoted form. */
166 void print_quoted_string(const char *);
169 * Print a NUL-terminated string `str' of length up to `size' - 1
172 void print_quoted_cstring(const char *str, size_t size);
174 /* Print memory in a quoted form with optional escape characters. */
175 void print_quoted_memory_ex(const void *, size_t, bool quote,
176 const char *escape_chars);
178 /* Print memory in a quoted form. */
179 void print_quoted_memory(const void *, size_t);
181 /* Print memory in a hexquoted form. */
182 void print_quoted_hex(const void *, size_t);
184 /* Print time_t and nanoseconds in symbolic format. */
185 void print_time_t_nsec(time_t, unsigned long long, int);
187 /* Print time_t and microseconds in symbolic format. */
188 void print_time_t_usec(time_t, unsigned long long, int);
190 /* Read an int from the file. */
191 int read_int_from_file(const char *, int *);
193 /* Check whether given uid matches kernel overflowuid. */
194 void check_overflowuid(const int);
196 /* Check whether given gid matches kernel overflowgid. */
197 void check_overflowgid(const int);
199 /* Translate errno to its name. */
200 const char *errno2name(void);
202 /* Translate signal number to its name. */
203 const char *signal2name(int);
205 /* Print return code and, in case return code is -1, errno information. */
206 const char *sprintrc(long rc);
207 /* sprintrc variant suitable for usage as part of grep pattern. */
208 const char *sprintrc_grep(long rc);
212 /* Print flags in symbolic form according to xlat table. */
213 int printflags(const struct xlat *, const unsigned long long, const char *);
215 /* Print constant in symbolic form according to xlat table. */
216 int printxval(const struct xlat *, const unsigned long long, const char *);
218 /* Invoke a socket syscall, either directly or via __NR_socketcall. */
219 int socketcall(const int nr, const int call,
220 long a1, long a2, long a3, long a4, long a5);
222 /* Wrappers for recvmmsg and sendmmsg syscalls. */
225 int recv_mmsg(int, struct mmsghdr *, unsigned int, unsigned int, struct timespec *);
226 int send_mmsg(int, struct mmsghdr *, unsigned int, unsigned int);
228 /* Create a netlink socket. */
229 int create_nl_socket_ext(int proto, const char *name);
230 #define create_nl_socket(proto) create_nl_socket_ext((proto), #proto)
232 /* Create a pipe with maximized descriptor numbers. */
233 void pipe_maxfd(int pipefd[2]);
235 /* if_nametoindex("lo") */
236 unsigned int ifindex_lo(void);
238 #ifdef HAVE_IF_INDEXTONAME
239 # define IFINDEX_LO_STR "if_nametoindex(\"lo\")"
241 # define IFINDEX_LO_STR "1"
244 #define F8ILL_KULONG_SUPPORTED (sizeof(void *) < sizeof(kernel_ulong_t))
245 #define F8ILL_KULONG_MASK ((kernel_ulong_t) 0xffffffff00000000ULL)
248 * For 64-bit kernel_ulong_t and 32-bit pointer,
249 * return a kernel_ulong_t value by filling higher bits.
250 * For other architertures, return the original pointer.
252 static inline kernel_ulong_t
253 f8ill_ptr_to_kulong(const void *const ptr)
255 const unsigned long uptr = (unsigned long) ptr;
256 return F8ILL_KULONG_SUPPORTED
257 ? F8ILL_KULONG_MASK | uptr : (kernel_ulong_t) uptr;
260 # define LENGTH_OF(arg) ((unsigned int) sizeof(arg) - 1)
262 /* Zero-extend a signed integer type to unsigned long long. */
263 #define zero_extend_signed_to_ull(v) \
264 (sizeof(v) == sizeof(char) ? (unsigned long long) (unsigned char) (v) : \
265 sizeof(v) == sizeof(short) ? (unsigned long long) (unsigned short) (v) : \
266 sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
267 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
268 (unsigned long long) (v))
270 /* Sign-extend an unsigned integer type to long long. */
271 #define sign_extend_unsigned_to_ll(v) \
272 (sizeof(v) == sizeof(char) ? (long long) (char) (v) : \
273 sizeof(v) == sizeof(short) ? (long long) (short) (v) : \
274 sizeof(v) == sizeof(int) ? (long long) (int) (v) : \
275 sizeof(v) == sizeof(long) ? (long long) (long) (v) : \
278 #define SKIP_MAIN_UNDEFINED(arg) \
279 int main(void) { error_msg_and_skip("undefined: %s", arg); }
282 # define LL_PAIR(HI, LO) (HI), (LO)
284 # define LL_PAIR(HI, LO) (LO), (HI)
286 #define LL_VAL_TO_PAIR(llval) LL_PAIR((long) ((llval) >> 32), (long) (llval))
288 #define _STR(_arg) #_arg
289 #define ARG_STR(_arg) (_arg), #_arg
290 #define ARG_ULL_STR(_arg) _arg##ULL, #_arg
293 * Assign an object of type DEST_TYPE at address DEST_ADDR
294 * using memcpy to avoid potential unaligned access.
296 #define SET_STRUCT(DEST_TYPE, DEST_ADDR, ...) \
298 DEST_TYPE dest_type_tmp_var = { __VA_ARGS__ }; \
299 memcpy(DEST_ADDR, &dest_type_tmp_var, sizeof(dest_type_tmp_var)); \
302 #define NLMSG_ATTR(nlh, hdrlen) ((void *)(nlh) + NLMSG_SPACE(hdrlen))
304 #endif /* !STRACE_TESTS_H */