2 * Copyright 1997 Sean Eric Fagan
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. All advertising materials mentioning features or use of this software
13 * must display the following acknowledgement:
14 * This product includes software developed by Sean Eric Fagan
15 * 4. Neither the name of the author may be used to endorse or promote
16 * products derived from this software without specific prior written
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 static const char rcsid[] =
38 * This file has routines used to print out system calls and their
43 #include <sys/types.h>
44 #include <sys/ptrace.h>
45 #include <sys/socket.h>
48 #include <netinet/in.h>
49 #include <arpa/inet.h>
50 #include <sys/ioccom.h>
51 #include <machine/atomic.h>
54 #include <sys/event.h>
56 #include <sys/resource.h>
75 /* 64-bit alignment on 32-bit platforms. */
82 /* Number of slots needed for a 64-bit argument. */
90 * This should probably be in its own file, sorted alphabetically.
92 static struct syscall syscalls[] = {
93 { .name = "fcntl", .ret_type = 1, .nargs = 3,
94 .args = { { Int, 0 } , { Fcntl, 1 }, { Fcntlflag | OUT, 2 } } },
95 { .name = "fork", .ret_type = 1, .nargs = 0 },
96 { .name = "vfork", .ret_type = 1, .nargs = 0 },
97 { .name = "rfork", .ret_type = 1, .nargs = 1,
98 .args = { { Rforkflags, 0 } } },
99 { .name = "getegid", .ret_type = 1, .nargs = 0 },
100 { .name = "geteuid", .ret_type = 1, .nargs = 0 },
101 { .name = "getgid", .ret_type = 1, .nargs = 0 },
102 { .name = "getpid", .ret_type = 1, .nargs = 0 },
103 { .name = "getpgid", .ret_type = 1, .nargs = 1,
104 .args = { { Int, 0 } } },
105 { .name = "getpgrp", .ret_type = 1, .nargs = 0 },
106 { .name = "getppid", .ret_type = 1, .nargs = 0 },
107 { .name = "getsid", .ret_type = 1, .nargs = 1,
108 .args = { { Int, 0 } } },
109 { .name = "getuid", .ret_type = 1, .nargs = 0 },
110 { .name = "readlink", .ret_type = 1, .nargs = 3,
111 .args = { { Name, 0 } , { Readlinkres | OUT, 1 }, { Int, 2 } } },
112 { .name = "lseek", .ret_type = 2, .nargs = 3,
113 .args = { { Int, 0 }, { Quad, 1 + QUAD_ALIGN }, { Whence, 1 + QUAD_SLOTS + QUAD_ALIGN } } },
114 { .name = "linux_lseek", .ret_type = 2, .nargs = 3,
115 .args = { { Int, 0 }, { Int, 1 }, { Whence, 2 } } },
116 { .name = "mmap", .ret_type = 2, .nargs = 6,
117 .args = { { Ptr, 0 }, { Int, 1 }, { Mprot, 2 }, { Mmapflags, 3 }, { Int, 4 }, { Quad, 5 + QUAD_ALIGN } } },
118 { .name = "mprotect", .ret_type = 1, .nargs = 3,
119 .args = { { Ptr, 0 }, { Int, 1 }, { Mprot, 2 } } },
120 { .name = "open", .ret_type = 1, .nargs = 3,
121 .args = { { Name | IN, 0 } , { Open, 1 }, { Octal, 2 } } },
122 { .name = "mkdir", .ret_type = 1, .nargs = 2,
123 .args = { { Name, 0 } , { Octal, 1 } } },
124 { .name = "linux_open", .ret_type = 1, .nargs = 3,
125 .args = { { Name, 0 }, { Hex, 1 }, { Octal, 2 } } },
126 { .name = "close", .ret_type = 1, .nargs = 1,
127 .args = { { Int, 0 } } },
128 { .name = "link", .ret_type = 0, .nargs = 2,
129 .args = { { Name, 0 }, { Name, 1 } } },
130 { .name = "unlink", .ret_type = 0, .nargs = 1,
131 .args = { { Name, 0 } } },
132 { .name = "chdir", .ret_type = 0, .nargs = 1,
133 .args = { { Name, 0 } } },
134 { .name = "chroot", .ret_type = 0, .nargs = 1,
135 .args = { { Name, 0 } } },
136 { .name = "mknod", .ret_type = 0, .nargs = 3,
137 .args = { { Name, 0 }, { Octal, 1 }, { Int, 3 } } },
138 { .name = "chmod", .ret_type = 0, .nargs = 2,
139 .args = { { Name, 0 }, { Octal, 1 } } },
140 { .name = "chown", .ret_type = 0, .nargs = 3,
141 .args = { { Name, 0 }, { Int, 1 }, { Int, 2 } } },
142 { .name = "mount", .ret_type = 0, .nargs = 4,
143 .args = { { Name, 0 }, { Name, 1 }, { Int, 2 }, { Ptr, 3 } } },
144 { .name = "umount", .ret_type = 0, .nargs = 2,
145 .args = { { Name, 0 }, { Int, 2 } } },
146 { .name = "fstat", .ret_type = 1, .nargs = 2,
147 .args = { { Int, 0 }, { Stat | OUT , 1 } } },
148 { .name = "stat", .ret_type = 1, .nargs = 2,
149 .args = { { Name | IN, 0 }, { Stat | OUT, 1 } } },
150 { .name = "lstat", .ret_type = 1, .nargs = 2,
151 .args = { { Name | IN, 0 }, { Stat | OUT, 1 } } },
152 { .name = "linux_newstat", .ret_type = 1, .nargs = 2,
153 .args = { { Name | IN, 0 }, { Ptr | OUT, 1 } } },
154 { .name = "linux_newfstat", .ret_type = 1, .nargs = 2,
155 .args = { { Int, 0 }, { Ptr | OUT, 1 } } },
156 { .name = "write", .ret_type = 1, .nargs = 3,
157 .args = { { Int, 0 }, { BinString | IN, 1 }, { Int, 2 } } },
158 { .name = "ioctl", .ret_type = 1, .nargs = 3,
159 .args = { { Int, 0 }, { Ioctl, 1 }, { Hex, 2 } } },
160 { .name = "break", .ret_type = 1, .nargs = 1,
161 .args = { { Ptr, 0 } } },
162 { .name = "exit", .ret_type = 0, .nargs = 1,
163 .args = { { Hex, 0 } } },
164 { .name = "access", .ret_type = 1, .nargs = 2,
165 .args = { { Name | IN, 0 }, { Int, 1 } } },
166 { .name = "sigaction", .ret_type = 1, .nargs = 3,
167 .args = { { Signal, 0 }, { Sigaction | IN, 1 }, { Sigaction | OUT, 2 } } },
168 { .name = "accept", .ret_type = 1, .nargs = 3,
169 .args = { { Int, 0 }, { Sockaddr | OUT, 1 }, { Ptr | OUT, 2 } } },
170 { .name = "bind", .ret_type = 1, .nargs = 3,
171 .args = { { Int, 0 }, { Sockaddr | IN, 1 }, { Int, 2 } } },
172 { .name = "connect", .ret_type = 1, .nargs = 3,
173 .args = { { Int, 0 }, { Sockaddr | IN, 1 }, { Int, 2 } } },
174 { .name = "getpeername", .ret_type = 1, .nargs = 3,
175 .args = { { Int, 0 }, { Sockaddr | OUT, 1 }, { Ptr | OUT, 2 } } },
176 { .name = "getsockname", .ret_type = 1, .nargs = 3,
177 .args = { { Int, 0 }, { Sockaddr | OUT, 1 }, { Ptr | OUT, 2 } } },
178 { .name = "recvfrom", .ret_type = 1, .nargs = 6,
179 .args = { { Int, 0 }, { BinString | OUT, 1 }, { Int, 2 }, { Hex, 3 }, { Sockaddr | OUT, 4 }, { Ptr | OUT, 5 } } },
180 { .name = "sendto", .ret_type = 1, .nargs = 6,
181 .args = { { Int, 0 }, { BinString | IN, 1 }, { Int, 2 }, { Hex, 3 }, { Sockaddr | IN, 4 }, { Ptr | IN, 5 } } },
182 { .name = "execve", .ret_type = 1, .nargs = 3,
183 .args = { { Name | IN, 0 }, { StringArray | IN, 1 }, { StringArray | IN, 2 } } },
184 { .name = "linux_execve", .ret_type = 1, .nargs = 3,
185 .args = { { Name | IN, 0 }, { StringArray | IN, 1 }, { StringArray | IN, 2 } } },
186 { .name = "kldload", .ret_type = 0, .nargs = 1,
187 .args = { { Name | IN, 0 } } },
188 { .name = "kldunload", .ret_type = 0, .nargs = 1,
189 .args = { { Int, 0 } } },
190 { .name = "kldfind", .ret_type = 0, .nargs = 1,
191 .args = { { Name | IN, 0 } } },
192 { .name = "kldnext", .ret_type = 0, .nargs = 1,
193 .args = { { Int, 0 } } },
194 { .name = "kldstat", .ret_type = 0, .nargs = 2,
195 .args = { { Int, 0 }, { Ptr, 1 } } },
196 { .name = "kldfirstmod", .ret_type = 0, .nargs = 1,
197 .args = { { Int, 0 } } },
198 { .name = "nanosleep", .ret_type = 0, .nargs = 1,
199 .args = { { Timespec, 0 } } },
200 { .name = "select", .ret_type = 1, .nargs = 5,
201 .args = { { Int, 0 }, { Fd_set, 1 }, { Fd_set, 2 }, { Fd_set, 3 }, { Timeval, 4 } } },
202 { .name = "poll", .ret_type = 1, .nargs = 3,
203 .args = { { Pollfd, 0 }, { Int, 1 }, { Int, 2 } } },
204 { .name = "gettimeofday", .ret_type = 1, .nargs = 2,
205 .args = { { Timeval | OUT, 0 }, { Ptr, 1 } } },
206 { .name = "clock_gettime", .ret_type = 1, .nargs = 2,
207 .args = { { Int, 0 }, { Timespec | OUT, 1 } } },
208 { .name = "getitimer", .ret_type = 1, .nargs = 2,
209 .args = { { Int, 0 }, { Itimerval | OUT, 2 } } },
210 { .name = "setitimer", .ret_type = 1, .nargs = 3,
211 .args = { { Int, 0 }, { Itimerval, 1 } , { Itimerval | OUT, 2 } } },
212 { .name = "kse_release", .ret_type = 0, .nargs = 1,
213 .args = { { Timespec, 0 } } },
214 { .name = "kevent", .ret_type = 0, .nargs = 6,
215 .args = { { Int, 0 }, { Kevent, 1 }, { Int, 2 }, { Kevent | OUT, 3 }, { Int, 4 }, { Timespec, 5 } } },
216 { .name = "_umtx_lock", .ret_type = 0, .nargs = 1,
217 .args = { { Umtx, 0 } } },
218 { .name = "_umtx_unlock", .ret_type = 0, .nargs = 1,
219 .args = { { Umtx, 0 } } },
220 { .name = "sigprocmask", .ret_type = 0, .nargs = 3,
221 .args = { { Sigprocmask, 0 }, { Sigset, 1 }, { Sigset | OUT, 2 } } },
222 { .name = "unmount", .ret_type = 1, .nargs = 2,
223 .args = { { Name, 0 }, { Int, 1 } } },
224 { .name = "socket", .ret_type = 1, .nargs = 3,
225 .args = { { Sockdomain, 0 }, { Socktype, 1 }, { Int, 2 } } },
226 { .name = "getrusage", .ret_type = 1, .nargs = 2,
227 .args = { { Int, 0 }, { Rusage | OUT, 1 } } },
228 { .name = "__getcwd", .ret_type = 1, .nargs = 2,
229 .args = { { Name | OUT, 0 }, { Int, 1 } } },
230 { .name = "shutdown", .ret_type = 1, .nargs = 2,
231 .args = { { Int, 0 }, { Shutdown, 1 } } },
232 { .name = "getrlimit", .ret_type = 1, .nargs = 2,
233 .args = { { Resource, 0 }, { Rlimit | OUT, 1 } } },
234 { .name = "setrlimit", .ret_type = 1, .nargs = 2,
235 .args = { { Resource, 0 }, { Rlimit | IN, 1 } } },
236 { .name = "utimes", .ret_type = 1, .nargs = 2,
237 .args = { { Name | IN, 0 }, { Timeval2 | IN, 1 } } },
238 { .name = "lutimes", .ret_type = 1, .nargs = 2,
239 .args = { { Name | IN, 0 }, { Timeval2 | IN, 1 } } },
240 { .name = "futimes", .ret_type = 1, .nargs = 2,
241 .args = { { Int, 0 }, { Timeval | IN, 1 } } },
242 { .name = "chflags", .ret_type = 1, .nargs = 2,
243 .args = { { Name | IN, 0 }, { Hex, 1 } } },
244 { .name = "lchflags", .ret_type = 1, .nargs = 2,
245 .args = { { Name | IN, 0 }, { Hex, 1 } } },
246 { .name = "pathconf", .ret_type = 1, .nargs = 2,
247 .args = { { Name | IN, 0 }, { Pathconf, 1 } } },
248 { .name = "pipe", .ret_type = 1, .nargs = 1,
249 .args = { { Ptr, 0 } } },
250 { .name = "truncate", .ret_type = 1, .nargs = 3,
251 .args = { { Name | IN, 0 }, { Int | IN, 1 }, { Quad | IN, 2 } } },
252 { .name = "ftruncate", .ret_type = 1, .nargs = 3,
253 .args = { { Int | IN, 0 }, { Int | IN, 1 }, { Quad | IN, 2 } } },
254 { .name = "kill", .ret_type = 1, .nargs = 2,
255 .args = { { Int | IN, 0 }, { Signal | IN, 1 } } },
256 { .name = "munmap", .ret_type = 1, .nargs = 2,
257 .args = { { Ptr, 0 }, { Int, 1 } } },
258 { .name = "read", .ret_type = 1, .nargs = 3,
259 .args = { { Int, 0 }, { BinString | OUT, 1 }, { Int, 2 } } },
260 { .name = "rename", .ret_type = 1, .nargs = 2,
261 .args = { { Name , 0 } , { Name, 1 } } },
262 { .name = "symlink", .ret_type = 1, .nargs = 2,
263 .args = { { Name , 0 } , { Name, 1 } } },
264 { .name = "posix_openpt", .ret_type = 1, .nargs = 1,
265 .args = { { Open, 0 } } },
269 /* Xlat idea taken from strace */
275 #define X(a) { a, #a },
276 #define XEND { 0, NULL }
278 static struct xlat kevent_filters[] = {
279 X(EVFILT_READ) X(EVFILT_WRITE) X(EVFILT_AIO) X(EVFILT_VNODE)
280 X(EVFILT_PROC) X(EVFILT_SIGNAL) X(EVFILT_TIMER)
281 X(EVFILT_FS) X(EVFILT_READ) XEND
284 static struct xlat kevent_flags[] = {
285 X(EV_ADD) X(EV_DELETE) X(EV_ENABLE) X(EV_DISABLE) X(EV_ONESHOT)
286 X(EV_CLEAR) X(EV_FLAG1) X(EV_ERROR) X(EV_EOF) XEND
289 static struct xlat poll_flags[] = {
290 X(POLLSTANDARD) X(POLLIN) X(POLLPRI) X(POLLOUT) X(POLLERR)
291 X(POLLHUP) X(POLLNVAL) X(POLLRDNORM) X(POLLRDBAND)
292 X(POLLWRBAND) X(POLLINIGNEOF) XEND
295 static struct xlat mmap_flags[] = {
296 X(MAP_SHARED) X(MAP_PRIVATE) X(MAP_FIXED) X(MAP_RENAME)
297 X(MAP_NORESERVE) X(MAP_RESERVED0080) X(MAP_RESERVED0100)
298 X(MAP_HASSEMAPHORE) X(MAP_STACK) X(MAP_NOSYNC) X(MAP_ANON)
299 X(MAP_NOCORE) X(MAP_PREFAULT_READ) XEND
302 static struct xlat mprot_flags[] = {
303 X(PROT_NONE) X(PROT_READ) X(PROT_WRITE) X(PROT_EXEC) XEND
306 static struct xlat whence_arg[] = {
307 X(SEEK_SET) X(SEEK_CUR) X(SEEK_END) XEND
310 static struct xlat sigaction_flags[] = {
311 X(SA_ONSTACK) X(SA_RESTART) X(SA_RESETHAND) X(SA_NOCLDSTOP)
312 X(SA_NODEFER) X(SA_NOCLDWAIT) X(SA_SIGINFO) XEND
315 static struct xlat fcntl_arg[] = {
316 X(F_DUPFD) X(F_GETFD) X(F_SETFD) X(F_GETFL) X(F_SETFL)
317 X(F_GETOWN) X(F_SETOWN) X(F_GETLK) X(F_SETLK) X(F_SETLKW) XEND
320 static struct xlat fcntlfd_arg[] = {
324 static struct xlat fcntlfl_arg[] = {
325 X(O_APPEND) X(O_ASYNC) X(O_FSYNC) X(O_NONBLOCK) X(O_NOFOLLOW)
329 static struct xlat sockdomain_arg[] = {
330 X(PF_UNSPEC) X(PF_LOCAL) X(PF_UNIX) X(PF_INET) X(PF_IMPLINK)
331 X(PF_PUP) X(PF_CHAOS) X(PF_NETBIOS) X(PF_ISO) X(PF_OSI)
332 X(PF_ECMA) X(PF_DATAKIT) X(PF_CCITT) X(PF_SNA) X(PF_DECnet)
333 X(PF_DLI) X(PF_LAT) X(PF_HYLINK) X(PF_APPLETALK) X(PF_ROUTE)
334 X(PF_LINK) X(PF_XTP) X(PF_COIP) X(PF_CNT) X(PF_SIP) X(PF_IPX)
335 X(PF_RTIP) X(PF_PIP) X(PF_ISDN) X(PF_KEY) X(PF_INET6)
336 X(PF_NATM) X(PF_ATM) X(PF_NETGRAPH) X(PF_SLOW) X(PF_SCLUSTER)
337 X(PF_ARP) X(PF_BLUETOOTH) XEND
340 static struct xlat socktype_arg[] = {
341 X(SOCK_STREAM) X(SOCK_DGRAM) X(SOCK_RAW) X(SOCK_RDM)
342 X(SOCK_SEQPACKET) XEND
345 static struct xlat open_flags[] = {
346 X(O_RDONLY) X(O_WRONLY) X(O_RDWR) X(O_ACCMODE) X(O_NONBLOCK)
347 X(O_APPEND) X(O_SHLOCK) X(O_EXLOCK) X(O_ASYNC) X(O_FSYNC)
348 X(O_NOFOLLOW) X(O_CREAT) X(O_TRUNC) X(O_EXCL) X(O_NOCTTY)
349 X(O_DIRECT) X(O_DIRECTORY) X(O_EXEC) X(O_TTY_INIT) X(O_CLOEXEC) XEND
352 static struct xlat shutdown_arg[] = {
353 X(SHUT_RD) X(SHUT_WR) X(SHUT_RDWR) XEND
356 static struct xlat resource_arg[] = {
357 X(RLIMIT_CPU) X(RLIMIT_FSIZE) X(RLIMIT_DATA) X(RLIMIT_STACK)
358 X(RLIMIT_CORE) X(RLIMIT_RSS) X(RLIMIT_MEMLOCK) X(RLIMIT_NPROC)
359 X(RLIMIT_NOFILE) X(RLIMIT_SBSIZE) X(RLIMIT_VMEM) XEND
362 static struct xlat pathconf_arg[] = {
363 X(_PC_LINK_MAX) X(_PC_MAX_CANON) X(_PC_MAX_INPUT)
364 X(_PC_NAME_MAX) X(_PC_PATH_MAX) X(_PC_PIPE_BUF)
365 X(_PC_CHOWN_RESTRICTED) X(_PC_NO_TRUNC) X(_PC_VDISABLE)
366 X(_PC_ASYNC_IO) X(_PC_PRIO_IO) X(_PC_SYNC_IO)
367 X(_PC_ALLOC_SIZE_MIN) X(_PC_FILESIZEBITS)
368 X(_PC_REC_INCR_XFER_SIZE) X(_PC_REC_MAX_XFER_SIZE)
369 X(_PC_REC_MIN_XFER_SIZE) X(_PC_REC_XFER_ALIGN)
370 X(_PC_SYMLINK_MAX) X(_PC_ACL_EXTENDED) X(_PC_ACL_PATH_MAX)
371 X(_PC_CAP_PRESENT) X(_PC_INF_PRESENT) X(_PC_MAC_PRESENT)
375 static struct xlat rfork_flags[] = {
376 X(RFPROC) X(RFNOWAIT) X(RFFDG) X(RFCFDG) X(RFTHREAD) X(RFMEM)
377 X(RFSIGSHARE) X(RFTSIGZMB) X(RFLINUXTHPN) XEND
384 * Searches an xlat array for a value, and returns it if found. Otherwise
385 * return a string representation.
388 lookup(struct xlat *xlat, int val, int base)
392 for (; xlat->str != NULL; xlat++)
393 if (xlat->val == val)
397 sprintf(tmp, "0%o", val);
400 sprintf(tmp, "0x%x", val);
403 sprintf(tmp, "%u", val);
406 errx(1,"Unknown lookup base");
413 xlookup(struct xlat *xlat, int val)
416 return (lookup(xlat, val, 16));
419 /* Searches an xlat array containing bitfield values. Remaining bits
420 set after removing the known ones are printed at the end:
423 xlookup_bits(struct xlat *xlat, int val)
426 static char str[512];
430 for (; xlat->str != NULL; xlat++) {
431 if ((xlat->val & rem) == xlat->val) {
432 /* don't print the "all-bits-zero" string unless all
433 bits are really zero */
434 if (xlat->val == 0 && val != 0)
436 len += sprintf(str + len, "%s|", xlat->str);
440 /* if we have leftover bits or didn't match anything */
442 len += sprintf(str + len, "0x%x", rem);
443 if (len && str[len - 1] == '|')
450 * If/when the list gets big, it might be desirable to do it
451 * as a hash table or binary search.
455 get_syscall(const char *name)
463 if (strcmp(name, sc->name) == 0)
473 * Copy a fixed amount of bytes from the process.
477 get_struct(pid_t pid, void *offset, void *buf, int len)
479 struct ptrace_io_desc iorequest;
481 iorequest.piod_op = PIOD_READ_D;
482 iorequest.piod_offs = offset;
483 iorequest.piod_addr = buf;
484 iorequest.piod_len = len;
485 if (ptrace(PT_IO, pid, (caddr_t)&iorequest, 0) < 0)
491 #define BLOCKSIZE 1024
494 * Copy a string from the process. Note that it is
495 * expected to be a C string, but if max is set, it will
496 * only get that much.
500 get_string(pid_t pid, void *offset, int max)
502 struct ptrace_io_desc iorequest;
504 int diff, i, size, totalsize;
507 totalsize = size = max ? (max + 1) : BLOCKSIZE;
508 buf = malloc(totalsize);
512 diff = totalsize - size;
513 iorequest.piod_op = PIOD_READ_D;
514 iorequest.piod_offs = (char *)offset + diff;
515 iorequest.piod_addr = buf + diff;
516 iorequest.piod_len = size;
517 if (ptrace(PT_IO, pid, (caddr_t)&iorequest, 0) < 0) {
521 for (i = 0 ; i < size; i++) {
522 if (buf[diff + i] == '\0')
525 if (totalsize < MAXSIZE - BLOCKSIZE && max == 0) {
526 totalsize += BLOCKSIZE;
527 buf = realloc(buf, totalsize);
530 buf[totalsize - 1] = '\0';
539 * Converts a syscall argument into a string. Said string is
540 * allocated via malloc(), so needs to be free()'d. The file
541 * descriptor is for the process' memory (via /proc), and is used
542 * to get any data (where the argument is a pointer). sc is
543 * a pointer to the syscall description (see above); args is
544 * an array of all of the system call arguments.
548 print_arg(struct syscall_args *sc, unsigned long *args, long retval,
549 struct trussinfo *trussinfo)
555 pid = trussinfo->pid;
556 switch (sc->type & ARG_MASK) {
558 asprintf(&tmp, "0x%x", (int)args[sc->offset]);
561 asprintf(&tmp, "0%o", (int)args[sc->offset]);
564 asprintf(&tmp, "%d", (int)args[sc->offset]);
567 /* NULL-terminated string. */
569 tmp2 = get_string(pid, (void*)args[sc->offset], 0);
570 asprintf(&tmp, "\"%s\"", tmp2);
575 /* Binary block of data that might have printable characters.
576 XXX If type|OUT, assume that the length is the syscall's
577 return value. Otherwise, assume that the length of the block
578 is in the next syscall argument. */
579 int max_string = trussinfo->strsize;
580 char tmp2[max_string+1], *tmp3;
587 len = args[sc->offset + 1];
589 /* Don't print more than max_string characters, to avoid word
590 wrap. If we have to truncate put some ... after the string.
592 if (len > max_string) {
596 if (len && get_struct(pid, (void*)args[sc->offset], &tmp2, len)
598 tmp3 = malloc(len * 4 + 1);
600 if (strvisx(tmp3, tmp2, len,
601 VIS_CSTYLE|VIS_TAB|VIS_NL) <= max_string)
606 asprintf(&tmp, "\"%s\"%s", tmp3, truncated ?
610 asprintf(&tmp, "0x%lx", args[sc->offset]);
618 char *strarray[100]; /* XXX This is ugly. */
620 if (get_struct(pid, (void *)args[sc->offset],
621 (void *)&strarray, sizeof(strarray)) == -1)
622 err(1, "get_struct %p", (void *)args[sc->offset]);
626 /* Find out how large of a buffer we'll need. */
627 while (strarray[num] != NULL) {
628 string = get_string(pid, (void*)strarray[num], 0);
629 size += strlen(string);
633 size += 4 + (num * 4);
634 tmp = (char *)malloc(size);
637 tmp2 += sprintf(tmp2, " [");
638 for (i = 0; i < num; i++) {
639 string = get_string(pid, (void*)strarray[i], 0);
640 tmp2 += sprintf(tmp2, " \"%s\"%c", string,
641 (i + 1 == num) ? ' ' : ',');
644 tmp2 += sprintf(tmp2, "]");
649 asprintf(&tmp, "0x%lx", args[sc->offset]);
653 unsigned long long ll;
654 ll = *(unsigned long long *)(args + sc->offset);
655 asprintf(&tmp, "0x%llx", ll);
660 asprintf(&tmp, "0x%lx", args[sc->offset]);
668 tmp2 = get_string(pid, (void*)args[sc->offset], retval);
669 asprintf(&tmp, "\"%s\"", tmp2);
674 const char *temp = ioctlname(args[sc->offset]);
678 unsigned long arg = args[sc->offset];
679 asprintf(&tmp, "0x%lx { IO%s%s 0x%lx('%c'), %lu, %lu }",
680 arg, arg & IOC_OUT ? "R" : "",
681 arg & IOC_IN ? "W" : "", IOCGROUP(arg),
682 isprint(IOCGROUP(arg)) ? (char)IOCGROUP(arg) : '?',
683 arg & 0xFF, IOCPARM_LEN(arg));
689 if (get_struct(pid, (void *)args[sc->offset], &umtx,
691 asprintf(&tmp, "{ 0x%lx }", (long)umtx.u_owner);
693 asprintf(&tmp, "0x%lx", args[sc->offset]);
698 if (get_struct(pid, (void *)args[sc->offset], &ts,
700 asprintf(&tmp, "{%ld.%09ld }", (long)ts.tv_sec,
703 asprintf(&tmp, "0x%lx", args[sc->offset]);
708 if (get_struct(pid, (void *)args[sc->offset], &tv, sizeof(tv))
710 asprintf(&tmp, "{%ld.%06ld }", (long)tv.tv_sec,
713 asprintf(&tmp, "0x%lx", args[sc->offset]);
717 struct timeval tv[2];
718 if (get_struct(pid, (void *)args[sc->offset], &tv, sizeof(tv))
720 asprintf(&tmp, "{%ld.%06ld, %ld.%06ld }",
721 (long)tv[0].tv_sec, tv[0].tv_usec,
722 (long)tv[1].tv_sec, tv[1].tv_usec);
724 asprintf(&tmp, "0x%lx", args[sc->offset]);
728 struct itimerval itv;
729 if (get_struct(pid, (void *)args[sc->offset], &itv,
731 asprintf(&tmp, "{%ld.%06ld, %ld.%06ld }",
732 (long)itv.it_interval.tv_sec,
733 itv.it_interval.tv_usec,
734 (long)itv.it_value.tv_sec,
735 itv.it_value.tv_usec);
737 asprintf(&tmp, "0x%lx", args[sc->offset]);
742 * XXX: A Pollfd argument expects the /next/ syscall argument
743 * to be the number of fds in the array. This matches the poll
747 int numfds = args[sc->offset+1];
748 int bytes = sizeof(struct pollfd) * numfds;
749 int i, tmpsize, u, used;
750 const int per_fd = 100;
752 if ((pfd = malloc(bytes)) == NULL)
753 err(1, "Cannot malloc %d bytes for pollfd array",
755 if (get_struct(pid, (void *)args[sc->offset], pfd, bytes)
758 tmpsize = 1 + per_fd * numfds + 2;
759 if ((tmp = malloc(tmpsize)) == NULL)
760 err(1, "Cannot alloc %d bytes for poll output",
764 for (i = 0; i < numfds; i++) {
766 u = snprintf(tmp + used, per_fd, "%s%d/%s",
767 i > 0 ? " " : "", pfd[i].fd,
768 xlookup_bits(poll_flags, pfd[i].events));
770 used += u < per_fd ? u : per_fd;
775 asprintf(&tmp, "0x%lx", args[sc->offset]);
782 * XXX: A Fd_set argument expects the /first/ syscall argument
783 * to be the number of fds in the array. This matches the
787 int numfds = args[0];
788 int bytes = _howmany(numfds, _NFDBITS) * _NFDBITS;
789 int i, tmpsize, u, used;
790 const int per_fd = 20;
792 if ((fds = malloc(bytes)) == NULL)
793 err(1, "Cannot malloc %d bytes for fd_set array",
795 if (get_struct(pid, (void *)args[sc->offset], fds, bytes)
798 tmpsize = 1 + numfds * per_fd + 2;
799 if ((tmp = malloc(tmpsize)) == NULL)
800 err(1, "Cannot alloc %d bytes for fd_set "
804 for (i = 0; i < numfds; i++) {
805 if (FD_ISSET(i, fds)) {
806 u = snprintf(tmp + used, per_fd, "%d ",
809 used += u < per_fd ? u : per_fd;
812 if (tmp[used-1] == ' ')
817 asprintf(&tmp, "0x%lx", args[sc->offset]);
824 sig = args[sc->offset];
827 asprintf(&tmp, "%ld", sig);
835 sig = args[sc->offset];
836 if (get_struct(pid, (void *)args[sc->offset], (void *)&ss,
838 asprintf(&tmp, "0x%lx", args[sc->offset]);
841 tmp = malloc(sys_nsig * 8); /* 7 bytes avg per signal name */
843 for (i = 1; i < sys_nsig; i++) {
844 if (sigismember(&ss, i))
845 used += sprintf(tmp + used, "%s|", strsig(i));
854 switch (args[sc->offset]) {
855 #define S(a) case a: tmp = strdup(#a); break;
862 asprintf(&tmp, "0x%lx", args[sc->offset]);
866 /* XXX output depends on the value of the previous argument */
867 switch (args[sc->offset-1]) {
869 tmp = strdup(xlookup_bits(fcntlfd_arg,
873 tmp = strdup(xlookup_bits(fcntlfl_arg,
882 asprintf(&tmp, "0x%lx", args[sc->offset]);
888 tmp = strdup(xlookup_bits(open_flags, args[sc->offset]));
891 tmp = strdup(xlookup(fcntl_arg, args[sc->offset]));
894 tmp = strdup(xlookup_bits(mprot_flags, args[sc->offset]));
897 char *base, *alignstr;
901 * MAP_ALIGNED can't be handled by xlookup_bits(), so
902 * generate that string manually and prepend it to the
903 * string from xlookup_bits(). Have to be careful to
904 * avoid outputting MAP_ALIGNED|0 if MAP_ALIGNED is
907 flags = args[sc->offset] & ~MAP_ALIGNMENT_MASK;
908 align = args[sc->offset] & MAP_ALIGNMENT_MASK;
910 if (align == MAP_ALIGNED_SUPER)
911 alignstr = strdup("MAP_ALIGNED_SUPER");
913 asprintf(&alignstr, "MAP_ALIGNED(%d)",
914 align >> MAP_ALIGNMENT_SHIFT);
921 base = strdup(xlookup_bits(mmap_flags, flags));
922 if (alignstr == NULL) {
926 asprintf(&tmp, "%s|%s", alignstr, base);
932 tmp = strdup(xlookup(whence_arg, args[sc->offset]));
935 tmp = strdup(xlookup(sockdomain_arg, args[sc->offset]));
938 tmp = strdup(xlookup(socktype_arg, args[sc->offset]));
941 tmp = strdup(xlookup(shutdown_arg, args[sc->offset]));
944 tmp = strdup(xlookup(resource_arg, args[sc->offset]));
947 tmp = strdup(xlookup(pathconf_arg, args[sc->offset]));
950 tmp = strdup(xlookup_bits(rfork_flags, args[sc->offset]));
953 struct sockaddr_storage ss;
955 struct sockaddr_in *lsin;
956 struct sockaddr_in6 *lsin6;
957 struct sockaddr_un *sun;
963 if (args[sc->offset] == 0) {
964 asprintf(&tmp, "NULL");
968 /* yuck: get ss_len */
969 if (get_struct(pid, (void *)args[sc->offset], (void *)&ss,
970 sizeof(ss.ss_len) + sizeof(ss.ss_family)) == -1)
971 err(1, "get_struct %p", (void *)args[sc->offset]);
973 * If ss_len is 0, then try to guess from the sockaddr type.
974 * AF_UNIX may be initialized incorrectly, so always frob
975 * it by using the "right" size.
977 if (ss.ss_len == 0 || ss.ss_family == AF_UNIX) {
978 switch (ss.ss_family) {
980 ss.ss_len = sizeof(*lsin);
983 ss.ss_len = sizeof(*sun);
990 if (get_struct(pid, (void *)args[sc->offset], (void *)&ss,
992 err(2, "get_struct %p", (void *)args[sc->offset]);
995 switch (ss.ss_family) {
997 lsin = (struct sockaddr_in *)&ss;
998 inet_ntop(AF_INET, &lsin->sin_addr, addr, sizeof addr);
999 asprintf(&tmp, "{ AF_INET %s:%d }", addr,
1000 htons(lsin->sin_port));
1003 lsin6 = (struct sockaddr_in6 *)&ss;
1004 inet_ntop(AF_INET6, &lsin6->sin6_addr, addr,
1006 asprintf(&tmp, "{ AF_INET6 [%s]:%d }", addr,
1007 htons(lsin6->sin6_port));
1010 sun = (struct sockaddr_un *)&ss;
1011 asprintf(&tmp, "{ AF_UNIX \"%s\" }", sun->sun_path);
1014 sa = (struct sockaddr *)&ss;
1015 asprintf(&tmp, "{ sa_len = %d, sa_family = %d, sa_data "
1016 "= {%n%*s } }", (int)sa->sa_len, (int)sa->sa_family,
1017 &i, 6 * (int)(sa->sa_len - ((char *)&sa->sa_data -
1021 for (q = (u_char *)&sa->sa_data;
1022 q < (u_char *)sa + sa->sa_len; q++)
1023 p += sprintf(p, " %#02x,", *q);
1029 struct sigaction sa;
1033 if (get_struct(pid, (void *)args[sc->offset], &sa, sizeof(sa))
1035 asprintf(&hand, "%p", sa.sa_handler);
1036 if (sa.sa_handler == SIG_DFL)
1038 else if (sa.sa_handler == SIG_IGN)
1043 asprintf(&tmp, "{ %s %s ss_t }", h,
1044 xlookup_bits(sigaction_flags, sa.sa_flags));
1047 asprintf(&tmp, "0x%lx", args[sc->offset]);
1052 * XXX XXX: the size of the array is determined by either the
1053 * next syscall argument, or by the syscall returnvalue,
1054 * depending on which argument number we are. This matches the
1055 * kevent syscall, but luckily that's the only syscall that uses
1061 int i, tmpsize, u, used;
1062 const int per_ke = 100;
1064 if (sc->offset == 1)
1065 numevents = args[sc->offset+1];
1066 else if (sc->offset == 3 && retval != -1)
1070 bytes = sizeof(struct kevent) * numevents;
1071 if ((ke = malloc(bytes)) == NULL)
1072 err(1, "Cannot malloc %d bytes for kevent array",
1074 if (numevents >= 0 && get_struct(pid, (void *)args[sc->offset],
1077 tmpsize = 1 + per_ke * numevents + 2;
1078 if ((tmp = malloc(tmpsize)) == NULL)
1079 err(1, "Cannot alloc %d bytes for kevent "
1083 for (i = 0; i < numevents; i++) {
1084 u = snprintf(tmp + used, per_ke,
1085 "%s%p,%s,%s,%d,%p,%p",
1087 (void *)ke[i].ident,
1088 xlookup(kevent_filters, ke[i].filter),
1089 xlookup_bits(kevent_flags, ke[i].flags),
1092 (void *)ke[i].udata);
1094 used += u < per_ke ? u : per_ke;
1099 asprintf(&tmp, "0x%lx", args[sc->offset]);
1106 if (get_struct(pid, (void *)args[sc->offset], &st, sizeof(st))
1109 strmode(st.st_mode, mode);
1111 "{ mode=%s,inode=%jd,size=%jd,blksize=%ld }", mode,
1112 (intmax_t)st.st_ino, (intmax_t)st.st_size,
1113 (long)st.st_blksize);
1115 asprintf(&tmp, "0x%lx", args[sc->offset]);
1121 if (get_struct(pid, (void *)args[sc->offset], &ru, sizeof(ru))
1124 "{ u=%ld.%06ld,s=%ld.%06ld,in=%ld,out=%ld }",
1125 (long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec,
1126 (long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec,
1127 ru.ru_inblock, ru.ru_oublock);
1129 asprintf(&tmp, "0x%lx", args[sc->offset]);
1134 if (get_struct(pid, (void *)args[sc->offset], &rl, sizeof(rl))
1136 asprintf(&tmp, "{ cur=%ju,max=%ju }",
1137 rl.rlim_cur, rl.rlim_max);
1139 asprintf(&tmp, "0x%lx", args[sc->offset]);
1143 errx(1, "Invalid argument type %d\n", sc->type & ARG_MASK);
1150 * Print (to outfile) the system call and its arguments. Note that
1151 * nargs is the number of arguments (not the number of words; this is
1152 * potentially confusing, I know).
1156 print_syscall(struct trussinfo *trussinfo, const char *name, int nargs,
1159 struct timespec timediff;
1163 if (trussinfo->flags & FOLLOWFORKS)
1164 len += fprintf(trussinfo->outfile, "%5d: ", trussinfo->pid);
1166 if (name != NULL && (strcmp(name, "execve") == 0 ||
1167 strcmp(name, "exit") == 0)) {
1168 clock_gettime(CLOCK_REALTIME, &trussinfo->curthread->after);
1171 if (trussinfo->flags & ABSOLUTETIMESTAMPS) {
1172 timespecsubt(&trussinfo->curthread->after,
1173 &trussinfo->start_time, &timediff);
1174 len += fprintf(trussinfo->outfile, "%ld.%09ld ",
1175 (long)timediff.tv_sec, timediff.tv_nsec);
1178 if (trussinfo->flags & RELATIVETIMESTAMPS) {
1179 timespecsubt(&trussinfo->curthread->after,
1180 &trussinfo->curthread->before, &timediff);
1181 len += fprintf(trussinfo->outfile, "%ld.%09ld ",
1182 (long)timediff.tv_sec, timediff.tv_nsec);
1185 len += fprintf(trussinfo->outfile, "%s(", name);
1187 for (i = 0; i < nargs; i++) {
1189 len += fprintf(trussinfo->outfile, "%s", s_args[i]);
1191 len += fprintf(trussinfo->outfile,
1192 "<missing argument>");
1193 len += fprintf(trussinfo->outfile, "%s", i < (nargs - 1) ?
1196 len += fprintf(trussinfo->outfile, ")");
1197 for (i = 0; i < 6 - (len / 8); i++)
1198 fprintf(trussinfo->outfile, "\t");
1202 print_syscall_ret(struct trussinfo *trussinfo, const char *name, int nargs,
1203 char **s_args, int errorp, long retval, struct syscall *sc)
1205 struct timespec timediff;
1207 if (trussinfo->flags & COUNTONLY) {
1210 clock_gettime(CLOCK_REALTIME, &trussinfo->curthread->after);
1211 timespecsubt(&trussinfo->curthread->after,
1212 &trussinfo->curthread->before, &timediff);
1213 timespecadd(&sc->time, &timediff, &sc->time);
1220 print_syscall(trussinfo, name, nargs, s_args);
1221 fflush(trussinfo->outfile);
1223 fprintf(trussinfo->outfile, " ERR#%ld '%s'\n", retval,
1227 * Because pipe(2) has a special assembly glue to provide the
1228 * libc API, we have to adjust retval.
1230 if (name != NULL && strcmp(name, "pipe") == 0)
1232 fprintf(trussinfo->outfile, " = %ld (0x%lx)\n", retval, retval);
1237 print_summary(struct trussinfo *trussinfo)
1239 struct timespec total = {0, 0};
1243 fprintf(trussinfo->outfile, "%-20s%15s%8s%8s\n",
1244 "syscall", "seconds", "calls", "errors");
1246 for (sc = syscalls; sc->name != NULL; sc++)
1248 fprintf(trussinfo->outfile, "%-20s%5jd.%09ld%8d%8d\n",
1249 sc->name, (intmax_t)sc->time.tv_sec,
1250 sc->time.tv_nsec, sc->ncalls, sc->nerror);
1251 timespecadd(&total, &sc->time, &total);
1252 ncall += sc->ncalls;
1253 nerror += sc->nerror;
1255 fprintf(trussinfo->outfile, "%20s%15s%8s%8s\n",
1256 "", "-------------", "-------", "-------");
1257 fprintf(trussinfo->outfile, "%-20s%5jd.%09ld%8d%8d\n",
1258 "", (intmax_t)total.tv_sec, total.tv_nsec, ncall, nerror);