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 #ifndef DEFAULT_STRLEN
66 /* Default maximum # of bytes printed in printstr et al. */
67 # define DEFAULT_STRLEN 32
70 /* Cached sysconf(_SC_PAGESIZE). */
71 size_t get_page_size(void);
73 /* The size of kernel's sigset_t. */
74 unsigned int get_sigset_size(void);
76 /* Print message and strerror(errno) to stderr, then exit(1). */
77 void perror_msg_and_fail(const char *, ...)
78 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
79 /* Print message to stderr, then exit(1). */
80 void error_msg_and_fail(const char *, ...)
81 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
82 /* Print message to stderr, then exit(77). */
83 void error_msg_and_skip(const char *, ...)
84 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
85 /* Print message and strerror(errno) to stderr, then exit(77). */
86 void perror_msg_and_skip(const char *, ...)
87 ATTRIBUTE_FORMAT((printf, 1, 2)) ATTRIBUTE_NORETURN;
89 #ifndef perror_msg_and_fail
90 # define perror_msg_and_fail(fmt_, ...) \
91 perror_msg_and_fail("%s:%d: " fmt_, __FILE__, __LINE__, ##__VA_ARGS__)
93 #ifndef perror_msg_and_fail
94 # define error_msg_and_fail(fmt_, ...) \
95 error_msg_and_fail("%s:%d: " fmt_, __FILE__, __LINE__, ##__VA_ARGS__)
98 /* Stat the specified file and skip the test if the stat call failed. */
99 void skip_if_unavailable(const char *);
102 * Allocate memory that ends on the page boundary.
103 * Pages allocated by this call are preceded by an unmapped page
104 * and followed also by an unmapped page.
106 void *tail_alloc(const size_t)
107 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((1));
108 /* Allocate memory using tail_alloc, then memcpy. */
109 void *tail_memdup(const void *, const size_t)
110 ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((2));
113 * Allocate an object of the specified type at the end
114 * of a mapped memory region.
115 * Assign its address to the specified constant pointer.
117 #define TAIL_ALLOC_OBJECT_CONST_PTR(type_name, type_ptr) \
118 type_name *const type_ptr = tail_alloc(sizeof(*type_ptr))
121 * Allocate an object of the specified type at the end
122 * of a mapped memory region.
123 * Assign its address to the specified variable pointer.
125 #define TAIL_ALLOC_OBJECT_VAR_PTR(type_name, type_ptr) \
126 type_name *type_ptr = tail_alloc(sizeof(*type_ptr))
129 * Fill memory (pointed by ptr, having size bytes) with different bytes (with
130 * values starting with start and resetting every period) in order to catch
131 * sign, byte order and/or alignment errors.
133 void fill_memory_ex(void *ptr, size_t size, unsigned char start,
134 unsigned char period);
135 /* Shortcut for fill_memory_ex(ptr, size, 0x80, 0x80) */
136 void fill_memory(void *ptr, size_t size);
138 /* Close stdin, move stdout to a non-standard descriptor, and print. */
139 void tprintf(const char *, ...)
140 ATTRIBUTE_FORMAT((printf, 1, 2));
142 /* Make a hexdump copy of C string */
143 const char *hexdump_strdup(const char *);
145 /* Make a hexdump copy of memory */
146 const char *hexdump_memdup(const char *, size_t);
148 /* Make a hexquoted copy of a string */
149 const char *hexquote_strndup(const char *, size_t);
151 /* Return inode number of socket descriptor. */
152 unsigned long inode_of_sockfd(int);
154 /* Print string in a quoted form with optional escape characters. */
155 void print_quoted_string_ex(const char *, bool quote, const char *escape_str);
157 /* Print string in a quoted form. */
158 void print_quoted_string(const char *);
161 * Print a NUL-terminated string `str' of length up to `size' - 1
164 void print_quoted_cstring(const char *str, size_t size);
166 /* Print memory in a quoted form with optional escape characters. */
167 void print_quoted_memory_ex(const void *, size_t, bool quote,
168 const char *escape_chars);
170 /* Print memory in a quoted form. */
171 void print_quoted_memory(const void *, size_t);
173 /* Print memory in a hexquoted form. */
174 void print_quoted_hex(const void *, size_t);
176 /* Print time_t and nanoseconds in symbolic format. */
177 void print_time_t_nsec(time_t, unsigned long long, int);
179 /* Print time_t and microseconds in symbolic format. */
180 void print_time_t_usec(time_t, unsigned long long, int);
182 /* Read an int from the file. */
183 int read_int_from_file(const char *, int *);
185 /* Check whether given uid matches kernel overflowuid. */
186 void check_overflowuid(const int);
188 /* Check whether given gid matches kernel overflowgid. */
189 void check_overflowgid(const int);
191 /* Translate errno to its name. */
192 const char *errno2name(void);
194 /* Translate signal number to its name. */
195 const char *signal2name(int);
197 /* Print return code and, in case return code is -1, errno information. */
198 const char *sprintrc(long rc);
199 /* sprintrc variant suitable for usage as part of grep pattern. */
200 const char *sprintrc_grep(long rc);
204 /* Print flags in symbolic form according to xlat table. */
205 int printflags(const struct xlat *, const unsigned long long, const char *);
207 /* Print constant in symbolic form according to xlat table. */
208 int printxval(const struct xlat *, const unsigned long long, const char *);
210 /* Invoke a socket syscall, either directly or via __NR_socketcall. */
211 int socketcall(const int nr, const int call,
212 long a1, long a2, long a3, long a4, long a5);
214 /* Wrappers for recvmmsg and sendmmsg syscalls. */
217 int recv_mmsg(int, struct mmsghdr *, unsigned int, unsigned int, struct timespec *);
218 int send_mmsg(int, struct mmsghdr *, unsigned int, unsigned int);
220 /* Create a netlink socket. */
221 int create_nl_socket_ext(int proto, const char *name);
222 #define create_nl_socket(proto) create_nl_socket_ext((proto), #proto)
224 /* Create a pipe with maximized descriptor numbers. */
225 void pipe_maxfd(int pipefd[2]);
227 /* if_nametoindex("lo") */
228 unsigned int ifindex_lo(void);
230 #ifdef HAVE_IF_INDEXTONAME
231 # define IFINDEX_LO_STR "if_nametoindex(\"lo\")"
233 # define IFINDEX_LO_STR "1"
236 #define F8ILL_KULONG_SUPPORTED (sizeof(void *) < sizeof(kernel_ulong_t))
237 #define F8ILL_KULONG_MASK ((kernel_ulong_t) 0xffffffff00000000ULL)
240 * For 64-bit kernel_ulong_t and 32-bit pointer,
241 * return a kernel_ulong_t value by filling higher bits.
242 * For other architertures, return the original pointer.
244 static inline kernel_ulong_t
245 f8ill_ptr_to_kulong(const void *const ptr)
247 const unsigned long uptr = (unsigned long) ptr;
248 return F8ILL_KULONG_SUPPORTED
249 ? F8ILL_KULONG_MASK | uptr : (kernel_ulong_t) uptr;
252 # define LENGTH_OF(arg) ((unsigned int) sizeof(arg) - 1)
254 /* Zero-extend a signed integer type to unsigned long long. */
255 #define zero_extend_signed_to_ull(v) \
256 (sizeof(v) == sizeof(char) ? (unsigned long long) (unsigned char) (v) : \
257 sizeof(v) == sizeof(short) ? (unsigned long long) (unsigned short) (v) : \
258 sizeof(v) == sizeof(int) ? (unsigned long long) (unsigned int) (v) : \
259 sizeof(v) == sizeof(long) ? (unsigned long long) (unsigned long) (v) : \
260 (unsigned long long) (v))
262 /* Sign-extend an unsigned integer type to long long. */
263 #define sign_extend_unsigned_to_ll(v) \
264 (sizeof(v) == sizeof(char) ? (long long) (char) (v) : \
265 sizeof(v) == sizeof(short) ? (long long) (short) (v) : \
266 sizeof(v) == sizeof(int) ? (long long) (int) (v) : \
267 sizeof(v) == sizeof(long) ? (long long) (long) (v) : \
270 #define SKIP_MAIN_UNDEFINED(arg) \
271 int main(void) { error_msg_and_skip("undefined: %s", arg); }
274 # define LL_PAIR(HI, LO) (HI), (LO)
276 # define LL_PAIR(HI, LO) (LO), (HI)
278 #define LL_VAL_TO_PAIR(llval) LL_PAIR((long) ((llval) >> 32), (long) (llval))
280 #define _STR(_arg) #_arg
281 #define ARG_STR(_arg) (_arg), #_arg
282 #define ARG_ULL_STR(_arg) _arg##ULL, #_arg
285 * Assign an object of type DEST_TYPE at address DEST_ADDR
286 * using memcpy to avoid potential unaligned access.
288 #define SET_STRUCT(DEST_TYPE, DEST_ADDR, ...) \
290 DEST_TYPE dest_type_tmp_var = { __VA_ARGS__ }; \
291 memcpy(DEST_ADDR, &dest_type_tmp_var, sizeof(dest_type_tmp_var)); \
294 #define NLMSG_ATTR(nlh, hdrlen) ((void *)(nlh) + NLMSG_SPACE(hdrlen))
296 #endif /* !STRACE_TESTS_H */