X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/de355530ae67247cbd0da700edb3a2a1dae884c2..3a60a9f5b85abb8c2cf24e1926c5c7b3f608a5e2:/bsd/sys/wait.h?ds=sidebyside diff --git a/bsd/sys/wait.h b/bsd/sys/wait.h index 76bf41a3b..34aba1bb8 100644 --- a/bsd/sys/wait.h +++ b/bsd/sys/wait.h @@ -58,51 +58,119 @@ #ifndef _SYS_WAIT_H_ #define _SYS_WAIT_H_ +#include +#include + /* * This file holds definitions relevent to the wait4 system call * and the alternate interfaces that use it (wait, wait3, waitpid). */ +/* + * [XSI] The type idtype_t shall be defined as an enumeration type whose + * possible values shall include at least P_ALL, P_PID, and P_PGID. + */ +typedef enum { + P_ALL, + P_PID, + P_PGID +} idtype_t; + +/* + * [XSI] The id_t and pid_t types shall be defined as described + * in + */ +#ifndef _PID_T +typedef __darwin_pid_t pid_t; +#define _PID_T +#endif + +#ifndef _ID_T +typedef __darwin_id_t id_t; +#define _ID_T +#endif + +/* + * [XSI] The siginfo_t type shall be defined as described in + * [XSI] The rusage structure shall be defined as described in + * [XSI] Inclusion of the header may also make visible all + * symbols from and + * + * NOTE: This requirement is currently being satisfied by the direct + * inclusion of and , below. + * + * Software should not depend on the exposure of anything other + * than the types siginfo_t and struct rusage as a result of + * this inclusion. If you depend on any types or manifest + * values othe than siginfo_t and struct rusage from either of + * those files, you should explicitly include them yourself, as + * well, or in future releases your stware may not compile + * without modification. + */ +#include /* [XSI] for siginfo_t */ +#include /* [XSI] for struct rusage */ + +/* + * Option bits for the third argument of wait4. WNOHANG causes the + * wait to not hang if there are no stopped or terminated processes, rather + * returning an error indication in this case (pid==0). WUNTRACED + * indicates that the caller should receive status about untraced children + * which stop due to signals. If children are stopped and a wait without + * this option is done, it is as though they were still running... nothing + * about them is returned. + */ +#define WNOHANG 0x01 /* [XSI] don't hang in wait/no child to reap */ +#define WUNTRACED 0x02 /* [XSI] notify on stopped, untraced children */ + /* * Macros to test the exit status returned by wait * and extract the relevant values. */ -#ifdef _POSIX_SOURCE +#ifdef _POSIX_C_SOURCE #define _W_INT(i) (i) #else #define _W_INT(w) (*(int *)&(w)) /* convert union wait to int */ #define WCOREFLAG 0200 +#endif /* _POSIX_C_SOURCE */ -#endif /* _POSIX_SOURCE */ - +/* These macros are permited, as they are in the implementation namespace */ #define _WSTATUS(x) (_W_INT(x) & 0177) #define _WSTOPPED 0177 /* _WSTATUS if process is stopped */ + +/* + * [XSI] The header shall define the following macros for + * analysis of process status values + */ +#define WEXITSTATUS(x) (_W_INT(x) >> 8) +#define WIFCONTINUED(x) (x == 0x13) /* 0x13 == SIGCONT */ +#define WIFEXITED(x) (_WSTATUS(x) == 0) +#define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0) #define WIFSTOPPED(x) (_WSTATUS(x) == _WSTOPPED) #define WSTOPSIG(x) (_W_INT(x) >> 8) -#define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0) #define WTERMSIG(x) (_WSTATUS(x)) -#define WIFEXITED(x) (_WSTATUS(x) == 0) -#define WEXITSTATUS(x) (_W_INT(x) >> 8) -#if !defined(_POSIX_SOURCE) +#if !defined(_POSIX_C_SOURCE) #define WCOREDUMP(x) (_W_INT(x) & WCOREFLAG) #define W_EXITCODE(ret, sig) ((ret) << 8 | (sig)) #define W_STOPCODE(sig) ((sig) << 8 | _WSTOPPED) -#endif /* !defined(_POSIX_SOURCE) */ +#endif /* !defined(_POSIX_C_SOURCE) */ /* - * Option bits for the third argument of wait4. WNOHANG causes the - * wait to not hang if there are no stopped or terminated processes, rather - * returning an error indication in this case (pid==0). WUNTRACED - * indicates that the caller should receive status about untraced children - * which stop due to signals. If children are stopped and a wait without - * this option is done, it is as though they were still running... nothing - * about them is returned. + * [XSI] The following symbolic constants shall be defined as possible + * values for the fourth argument to waitid(). */ -#define WNOHANG 1 /* don't hang in wait */ -#define WUNTRACED 2 /* tell about stopped, untraced children */ +/* WNOHANG already defined for wait4() */ +/* WUNTRACED defined for wait4() but not for waitid() */ +#define WEXITED 0x04 /* [XSI] Processes which have exitted */ +#ifdef _POSIX_C_SOURCE +/* waitid() parameter */ +#define WSTOPPED 0x08 /* [XSI] Any child stopped by signal receipt */ +#endif +#define WCONTINUED 0x10 /* [XSI] Any child stopped then continued */ +#define WNOWAIT 0x20 /* [XSI] Leave process returned waitable */ + -#if !defined(_POSIX_SOURCE) +#if !defined(_POSIX_C_SOURCE) /* POSIX extensions and 4.2/4.3 compatability: */ /* @@ -125,13 +193,13 @@ union wait { * Terminated process status. */ struct { -#if BYTE_ORDER == LITTLE_ENDIAN +#if __DARWIN_BYTE_ORDER == __DARWIN_LITTLE_ENDIAN unsigned int w_Termsig:7, /* termination signal */ w_Coredump:1, /* core dump indicator */ w_Retcode:8, /* exit code if w_termsig==0 */ w_Filler:16; /* upper bits filler */ #endif -#if BYTE_ORDER == BIG_ENDIAN +#if __DARWIN_BYTE_ORDER == __DARWIN_BIG_ENDIAN unsigned int w_Filler:16, /* upper bits filler */ w_Retcode:8, /* exit code if w_termsig==0 */ w_Coredump:1, /* core dump indicator */ @@ -144,12 +212,12 @@ union wait { * with the WUNTRACED option bit. */ struct { -#if BYTE_ORDER == LITTLE_ENDIAN +#if __DARWIN_BYTE_ORDER == __DARWIN_LITTLE_ENDIAN unsigned int w_Stopval:8, /* == W_STOPPED if stopped */ w_Stopsig:8, /* signal that stopped us */ w_Filler:16; /* upper bits filler */ #endif -#if BYTE_ORDER == BIG_ENDIAN +#if __DARWIN_BYTE_ORDER == __DARWIN_BIG_ENDIAN unsigned int w_Filler:16, /* upper bits filler */ w_Stopsig:8, /* signal that stopped us */ w_Stopval:8; /* == W_STOPPED if stopped */ @@ -162,22 +230,24 @@ union wait { #define w_stopval w_S.w_Stopval #define w_stopsig w_S.w_Stopsig +/* + * Stopped state value; cannot use waitid() parameter of the same name + * in the same scope + */ #define WSTOPPED _WSTOPPED -#endif /* !defined(_POSIX_SOURCE) */ +#endif /* !defined(_POSIX_C_SOURCE) */ #ifndef KERNEL -#include -#include - __BEGIN_DECLS -struct rusage; /* forward declaration */ - -pid_t wait __P((int *)); -pid_t waitpid __P((pid_t, int *, int)); -#if !defined(_POSIX_SOURCE) -pid_t wait3 __P((int *, int, struct rusage *)); -pid_t wait4 __P((pid_t, int *, int, struct rusage *)); -#endif /* !defined(_POSIX_SOURCE) */ +pid_t wait(int *); +pid_t waitpid(pid_t, int *, int); +#ifndef _ANSI_SOURCE +int waitid(idtype_t, id_t, siginfo_t *, int); +#endif /* !_ANSI_SOURCE */ +#if !defined(_POSIX_C_SOURCE) +pid_t wait3(int *, int, struct rusage *); +pid_t wait4(pid_t, int *, int, struct rusage *); +#endif /* !defined(_POSIX_C_SOURCE) */ __END_DECLS #endif #endif /* !_SYS_WAIT_H_ */