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29 * @(#)wait.h 8.2 (Berkeley) 7/10/94
30 * $FreeBSD: src/sys/sys/wait.h,v 1.11 1999/12/29 04:24:50 peter Exp $
36 #include <sys/cdefs.h>
37 #include <machine/stdint.h>
40 * This file holds definitions relevant to the wait4 system call
41 * and the alternate interfaces that use it (wait, wait3, waitpid).
45 * Macros to test the exit status returned by wait
46 * and extract the relevant values.
49 #define WCOREFLAG 0200
53 #define _WSTATUS(x) (_W_INT(x) & 0177)
54 #define _WSTOPPED 0177 /* _WSTATUS if process is stopped */
55 #define WIFSTOPPED(x) (_WSTATUS(x) == _WSTOPPED)
56 #define WSTOPSIG(x) (_W_INT(x) >> 8)
57 #define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0)
58 #define WTERMSIG(x) (_WSTATUS(x))
59 #define WIFEXITED(x) (_WSTATUS(x) == 0)
60 #define WEXITSTATUS(x) (_W_INT(x) >> 8)
61 #define WIFCONTINUED(x) (x == 19) /* 19 == SIGCONT */
63 #define WCOREDUMP(x) (_W_INT(x) & WCOREFLAG)
65 #define W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
66 #define W_STOPCODE(sig) ((sig) << 8 | _WSTOPPED)
70 * Option bits for the third argument of wait4. WNOHANG causes the
71 * wait to not hang if there are no stopped or terminated processes, rather
72 * returning an error indication in this case (pid==0). WUNTRACED
73 * indicates that the caller should receive status about untraced children
74 * which stop due to signals. If children are stopped and a wait without
75 * this option is done, it is as though they were still running... nothing
76 * about them is returned.
78 #define WNOHANG 0x0001 /* don't hang in wait */
79 #define WUNTRACED 0x0002 /* tell about stopped, untraced children */
80 #define WCONTINUED 0x0004 /* Report a job control continued process. */
81 #define WSTOPPED WUNTRACED
82 #define WNOWAIT 0x0008
83 #define WEXITED 0x0010
84 #define WTRAPPED 0x0020
87 #define WLINUXCLONE 0x80000000 /* wait for kthread spawned from linux_clone */
90 * Tokens for special values of the "pid" parameter to wait4.
92 #define WAIT_ANY (-1) /* any process */
93 #define WAIT_MYPGRP 0 /* any process in my process group */
94 #endif /* __BSD_VISIBLE */
96 #ifndef _ID_T_DECLARED
97 #define _ID_T_DECLARED
98 typedef __int64_t id_t; /* general id, can hold gid/pid/uid_t */
101 #ifndef _IDTYPE_T_DECLARED
102 #define _IDTYPE_T_DECLARED
104 /* SEE ALSO SYS/PROCCTL.H */
106 typedef enum idtype {
108 * These names were mostly lifted from Solaris source code and
109 * still use Solaris style naming to avoid breaking any
110 * OpenSolaris code which has been ported to FreeBSD. There
111 * is no clear FreeBSD counterpart for all of the names, but
112 * some have a clear correspondence to FreeBSD entities.
114 * The numerical values are kept synchronized with the Solaris
117 P_PID, /* A process identifier. */
118 P_PPID, /* A parent process identifier. */
119 P_PGID, /* A process group identifier. */
120 P_SID, /* A session identifier. */
121 P_CID, /* A scheduling class identifier. */
122 P_UID, /* A user identifier. */
123 P_GID, /* A group identifier. */
124 P_ALL, /* All processes. */
125 P_LWPID, /* An LWP identifier. */
126 P_TASKID, /* A task identifier. */
127 P_PROJID, /* A project identifier. */
128 P_POOLID, /* A pool identifier. */
129 P_JAILID, /* A zone identifier. */
130 P_CTID, /* A (process) contract identifier. */
131 P_CPUID, /* CPU identifier. */
132 P_PSETID /* Processor set identifier. */
133 } idtype_t; /* The type of id_t we are using. */
137 #if !defined(_KERNEL) || defined(_KERNEL_VIRTUAL)
138 #include <sys/stdint.h>
140 #ifndef _PID_T_DECLARED
141 typedef __pid_t pid_t; /* process id */
142 #define _PID_T_DECLARED
148 pid_t waitpid(pid_t, int *, int);
149 #if __POSIX_VISIBLE >= 200112
150 int waitid(idtype_t, id_t, struct __siginfo *, int);
152 #if __BSD_VISIBLE || (__XSI_VISIBLE && __XSI_VISIBLE < 700)
156 #if __BSD_VISIBLE || (__XSI_VISIBLE && __XSI_VISIBLE < 600)
157 pid_t wait3(int *, int, struct rusage *);
160 pid_t wait4(pid_t, int *, int, struct rusage *);
161 pid_t wait6(idtype_t, id_t, int *, int, struct __wrusage *,