2 * Check decoding of waitid syscall.
4 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
5 * Copyright (c) 2016-2017 The strace developers.
8 * SPDX-License-Identifier: GPL-2.0-or-later
18 #include <sys/resource.h>
19 #include <asm/unistd.h>
22 sprint_rusage(const struct rusage *const ru)
24 static char buf[1024];
25 snprintf(buf, sizeof(buf),
26 "{ru_utime={tv_sec=%lld, tv_usec=%llu}"
27 ", ru_stime={tv_sec=%lld, tv_usec=%llu}"
46 , (long long) ru->ru_utime.tv_sec
47 , zero_extend_signed_to_ull(ru->ru_utime.tv_usec)
48 , (long long) ru->ru_stime.tv_sec
49 , zero_extend_signed_to_ull(ru->ru_stime.tv_usec)
51 , zero_extend_signed_to_ull(ru->ru_maxrss)
52 , zero_extend_signed_to_ull(ru->ru_ixrss)
53 , zero_extend_signed_to_ull(ru->ru_idrss)
54 , zero_extend_signed_to_ull(ru->ru_isrss)
55 , zero_extend_signed_to_ull(ru->ru_minflt)
56 , zero_extend_signed_to_ull(ru->ru_majflt)
57 , zero_extend_signed_to_ull(ru->ru_nswap)
58 , zero_extend_signed_to_ull(ru->ru_inblock)
59 , zero_extend_signed_to_ull(ru->ru_oublock)
60 , zero_extend_signed_to_ull(ru->ru_msgsnd)
61 , zero_extend_signed_to_ull(ru->ru_msgrcv)
62 , zero_extend_signed_to_ull(ru->ru_nsignals)
63 , zero_extend_signed_to_ull(ru->ru_nvcsw)
64 , zero_extend_signed_to_ull(ru->ru_nivcsw)
70 #define CASE(x) case x: return #x
73 si_code_2_name(const int code)
95 perror_msg_and_fail("unknown si_code %d", code);
100 sprint_siginfo(const siginfo_t *const si, const char *const status_text)
102 static char buf[1024];
103 snprintf(buf, sizeof(buf),
111 si_code_2_name(si->si_code),
115 zero_extend_signed_to_ull(si->si_utime),
116 zero_extend_signed_to_ull(si->si_stime));
121 poison(unsigned int v)
123 return (unsigned long) 0xfacefeed00000000ULL | v;
127 do_waitid(const unsigned int idtype,
128 const unsigned int id,
129 const siginfo_t *const infop,
130 const unsigned int options,
131 const struct rusage *const rusage)
134 sigaddset(&mask, SIGCHLD);
136 assert(sigprocmask(SIG_BLOCK, &mask, NULL) == 0);
137 long rc = syscall(__NR_waitid, poison(idtype), poison(id),
138 infop, poison(options), rusage);
139 assert(sigprocmask(SIG_UNBLOCK, &mask, NULL) == 0);
150 perror_msg_and_fail("pipe");
155 perror_msg_and_fail("fork");
160 assert(read(0, &c, sizeof(c)) == 1);
166 if (do_waitid(P_PID, pid, 0, WNOHANG|WEXITED, 0))
167 perror_msg_and_fail("waitid #1");
168 tprintf("waitid(P_PID, %d, NULL, WNOHANG|WEXITED, NULL) = 0\n", pid);
170 TAIL_ALLOC_OBJECT_CONST_PTR(siginfo_t, sinfo);
171 memset(sinfo, 0, sizeof(*sinfo));
172 TAIL_ALLOC_OBJECT_CONST_PTR(struct rusage, rusage);
173 if (do_waitid(P_PID, pid, sinfo, WNOHANG|WEXITED|WSTOPPED, rusage))
174 perror_msg_and_fail("waitid #2");
175 tprintf("waitid(P_PID, %d, {}, WNOHANG|WEXITED|WSTOPPED, %s) = 0\n",
176 pid, sprint_rusage(rusage));
178 assert(write(1, "", 1) == 1);
181 if (do_waitid(P_PID, pid, sinfo, WEXITED, rusage))
182 perror_msg_and_fail("waitid #3");
183 tprintf("waitid(P_PID, %d, %s, WEXITED, %s) = 0\n",
184 pid, sprint_siginfo(sinfo, "42"), sprint_rusage(rusage));
188 perror_msg_and_fail("fork");
191 (void) raise(SIGUSR1);
195 if (do_waitid(P_PID, pid, sinfo, WEXITED, rusage))
196 perror_msg_and_fail("waitid #4");
197 tprintf("waitid(P_PID, %d, %s, WEXITED, %s) = 0\n",
198 pid, sprint_siginfo(sinfo, "SIGUSR1"), sprint_rusage(rusage));
201 perror_msg_and_fail("pipe");
204 perror_msg_and_fail("fork");
210 assert(read(0, &c, sizeof(c)) == 1);
216 if (do_waitid(P_PID, pid, sinfo, WSTOPPED, rusage))
217 perror_msg_and_fail("waitid #5");
218 tprintf("waitid(P_PID, %d, %s, WSTOPPED, %s) = 0\n",
219 pid, sprint_siginfo(sinfo, "SIGSTOP"), sprint_rusage(rusage));
221 if (kill(pid, SIGCONT))
222 perror_msg_and_fail("kill(SIGCONT)");
224 #if defined WCONTINUED
225 if (do_waitid(P_PID, pid, sinfo, WCONTINUED, rusage))
226 perror_msg_and_fail("waitid #6");
227 tprintf("waitid(P_PID, %d, %s, WCONTINUED, %s) = 0\n",
228 pid, sprint_siginfo(sinfo, "SIGCONT"), sprint_rusage(rusage));
229 #endif /* WCONTINUED */
231 assert(write(1, "", 1) == 1);
234 if (do_waitid(P_PID, pid, sinfo, WEXITED, rusage))
235 perror_msg_and_fail("waitid #7");
236 tprintf("waitid(P_PID, %d, %s, WEXITED, %s) = 0\n",
237 pid, sprint_siginfo(sinfo, "0"), sprint_rusage(rusage));
239 long rc = do_waitid(P_ALL, -1, sinfo, WEXITED|WSTOPPED, rusage);
240 tprintf("waitid(P_ALL, -1, %p, WEXITED|WSTOPPED, %p)"
241 " = %ld %s (%m)\n", sinfo, rusage, rc, errno2name());
243 tprintf("%s\n", "+++ exited with 0 +++");