MFC r283394:

Implement waitid() system call.

6 files changed, 74 insertions, 4 deletions

diff --git a/sys/amd64/linux32/linux32_dummy.c b/sys/amd64/linux32/linux32_dummy.c
index c36d519..590db0d 100644
--- a/sys/amd64/linux32/linux32_dummy.c
+++ b/sys/amd64/linux32/linux32_dummy.c
@@ -85,7 +85,6 @@ DUMMY(mq_timedreceive);
 DUMMY(mq_notify);
 DUMMY(mq_getsetattr);
 DUMMY(kexec_load);
-DUMMY(waitid);
 /* linux 2.6.11: */
 DUMMY(add_key);
 DUMMY(request_key);
diff --git a/sys/amd64/linux32/syscalls.master b/sys/amd64/linux32/syscalls.master
index 7d3c11b..7fd0d82 100644
--- a/sys/amd64/linux32/syscalls.master
+++ b/sys/amd64/linux32/syscalls.master
@@ -466,7 +466,9 @@
 281	AUE_NULL	STD	{ int linux_mq_notify(void); }
 282	AUE_NULL	STD	{ int linux_mq_getsetattr(void); }
 283	AUE_NULL	STD	{ int linux_kexec_load(void); }
-284	AUE_NULL	STD	{ int linux_waitid(void); }
+284	AUE_WAIT6	STD	{ int linux_waitid(int idtype, l_pid_t id, \
+				    l_siginfo_t *info, int options, \
+				    struct l_rusage *rusage); }
 285	AUE_NULL	UNIMPL
 ; linux 2.6.11:
 286	AUE_NULL	STD	{ int linux_add_key(void); }
diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c
index d9e1834..f54018d 100644
--- a/sys/compat/linux/linux_misc.c
+++ b/sys/compat/linux/linux_misc.c
@@ -916,6 +916,68 @@ linux_wait4(struct thread *td, struct linux_wait4_args *args)
 }
 
 int
+linux_waitid(struct thread *td, struct linux_waitid_args *args)
+{
+	int status, options, sig;
+	struct __wrusage wru;
+	siginfo_t siginfo;
+	l_siginfo_t lsi;
+	idtype_t idtype;
+	struct proc *p;
+	int error;
+
+	options = 0;
+	linux_to_bsd_waitopts(args->options, &options);
+
+	if (options & ~(WNOHANG | WNOWAIT | WEXITED | WUNTRACED | WCONTINUED))
+		return (EINVAL);
+	if (!(options & (WEXITED | WUNTRACED | WCONTINUED)))
+		return (EINVAL);
+
+	switch (args->idtype) {
+	case LINUX_P_ALL:
+		idtype = P_ALL;
+		break;
+	case LINUX_P_PID:
+		if (args->id <= 0)
+			return (EINVAL);
+		idtype = P_PID;
+		break;
+	case LINUX_P_PGID:
+		if (args->id <= 0)
+			return (EINVAL);
+		idtype = P_PGID;
+		break;
+	default:
+		return (EINVAL);
+	}
+
+	error = kern_wait6(td, idtype, args->id, &status, options,
+	    &wru, &siginfo);
+	if (error != 0)
+		return (error);
+	if (args->rusage != NULL) {
+		error = linux_copyout_rusage(&wru.wru_children,
+		    args->rusage);
+		if (error != 0)
+			return (error);
+	}
+	if (args->info != NULL) {
+		p = td->td_proc;
+		if (td->td_retval[0] == 0)
+			bzero(&lsi, sizeof(lsi));
+		else {
+			sig = BSD_TO_LINUX_SIGNAL(siginfo.si_signo);
+			siginfo_to_lsiginfo(&siginfo, &lsi, sig);
+		}
+		error = copyout(&lsi, args->info, sizeof(lsi));
+	}
+	td->td_retval[0] = 0;
+
+	return (error);
+}
+
+int
 linux_mknod(struct thread *td, struct linux_mknod_args *args)
 {
 	char *path;
diff --git a/sys/compat/linux/linux_misc.h b/sys/compat/linux/linux_misc.h
index a25ba73..ccbcd4d 100644
--- a/sys/compat/linux/linux_misc.h
+++ b/sys/compat/linux/linux_misc.h
@@ -123,6 +123,12 @@ extern int stclohz;
 #define	__WALL			0x40000000
 #define	__WCLONE		0x80000000
 
+/* Linux waitid idtype  */
+#define	LINUX_P_ALL		0
+#define	LINUX_P_PID		1
+#define	LINUX_P_PGID		2
+
+
 int linux_common_wait(struct thread *td, int pid, int *status,
 			int options, struct rusage *ru);
 void linux_to_bsd_waitopts(int options, int *bsdopts);
diff --git a/sys/i386/linux/linux_dummy.c b/sys/i386/linux/linux_dummy.c
index ab77790..88b9f37 100644
--- a/sys/i386/linux/linux_dummy.c
+++ b/sys/i386/linux/linux_dummy.c
@@ -81,7 +81,6 @@ DUMMY(mbind);
 DUMMY(get_mempolicy);
 DUMMY(set_mempolicy);
 DUMMY(kexec_load);
-DUMMY(waitid);
 /* linux 2.6.11: */
 DUMMY(add_key);
 DUMMY(request_key);
diff --git a/sys/i386/linux/syscalls.master b/sys/i386/linux/syscalls.master
index 09e4f3a..99160c6 100644
--- a/sys/i386/linux/syscalls.master
+++ b/sys/i386/linux/syscalls.master
@@ -474,7 +474,9 @@
 282	AUE_NULL	STD	{ int linux_mq_getsetattr(l_mqd_t mqd, const struct mq_attr *attr, \
 					struct mq_attr *oattr); }
 283	AUE_NULL	STD	{ int linux_kexec_load(void); }
-284	AUE_NULL	STD	{ int linux_waitid(void); }
+284	AUE_WAIT6	STD	{ int linux_waitid(int idtype, l_pid_t id, \
+				    l_siginfo_t *info, int options, \
+				    void *rusage); }
 285	AUE_NULL	UNIMPL
 ; linux 2.6.11:
 286	AUE_NULL	STD	{ int linux_add_key(void); }