shithub: scc

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ref: c09d58a66ff792a639ec64e51f658ef3277a7441
parent: c56ea52bd1002ff2b1cb6b69c298dddf2292ee87
author: Roberto E. Vargas Caballero <[email protected]>
date: Tue May 17 18:09:09 EDT 2022 

libc: Add _waitpid() syscall

_waitpid() is implemented in bsd and linux systems using _wait4()
syscall.

diff: cannot open b/src/libc/arch/bsd//null: file does not exist: 'b/src/libc/arch/bsd//null' 
--- a/include/bits/darwin/sys.h
+++ b/include/bits/darwin/sys.h
@@ -27,3 +27,4 @@
 extern int _kill(pid_t, int);
 extern int _sigaction(int, struct sigaction *, struct sigaction *);
 extern pid_t _wait4(pid_t, int *, int, struct rusage *);
+extern pid_t _waitpid(pid_t, int *, int);
--- a/include/bits/dragonfly/sys.h
+++ b/include/bits/dragonfly/sys.h
@@ -27,3 +27,4 @@
 extern int _kill(pid_t, int);
 extern int _sigaction(int, struct sigaction *, struct sigaction *);
 extern pid_t _wait4(pid_t, int *, int, struct rusage *);
+extern pid_t _waitpid(pid_t, int *, int);
--- a/include/bits/linux/sys.h
+++ b/include/bits/linux/sys.h
@@ -27,3 +27,4 @@
 extern int _kill(pid_t, int);
 extern int _sigaction(int, struct sigaction *, struct sigaction *);
 extern pid_t _wait4(pid_t, int *, int, struct rusage *);
+extern pid_t _waitpid(pid_t, int *, int);
--- a/include/bits/netbsd/sys.h
+++ b/include/bits/netbsd/sys.h
@@ -27,3 +27,4 @@
 extern int _kill(pid_t, int);
 extern int _sigaction(int, struct sigaction *, struct sigaction *);
 extern pid_t _wait4(pid_t, int *, int, struct rusage *);
+extern pid_t _waitpid(pid_t, int *, int);
--- a/include/bits/openbsd/sys.h
+++ b/include/bits/openbsd/sys.h
@@ -27,3 +27,4 @@
 extern int _kill(pid_t, int);
 extern int _sigaction(int, struct sigaction *, struct sigaction *);
 extern pid_t _wait4(pid_t, int *, int, struct rusage *);
+extern pid_t _waitpid(pid_t, int *, int);
--- a/src/libc/arch/Makefile
+++ b/src/libc/arch/Makefile
@@ -15,11 +15,14 @@
 	linux\
 	posix\
 
-POSIX =\
+BSD =\
 	netbsd\
 	openbsd\
 	darwin\
 	dragonfly\
+
+POSIX =\
+	$(BSD)\
 	linux\
 
 include $(PROJECTDIR)/scripts/rules.mk
@@ -30,3 +33,4 @@
 all: $(ARCH) $(SYS)
 
 $(POSIX): posix
+$(BSD): bsd
--- /dev/null
+++ b/src/libc/arch/bsd/Makefile
@@ -1,0 +1,11 @@
+.POSIX:
+PROJECTDIR = ../../../..
+include $(PROJECTDIR)/scripts/rules.mk
+include ../../rules.mk
+
+OBJS=\
+        _waitpid.$O\
+
+all: $(OBJS)
+
+include deps.mk
--- /dev/null
+++ b/src/libc/arch/bsd/_waitpid.c
@@ -1,0 +1,9 @@
+#include <stddef.h>
+
+#include <sys.h>
+
+int
+_waitpid(pid_t pid, int *status, int options)
+{
+	return _wait4(pid, status, options, NULL);
+}
--- /dev/null
+++ b/src/libc/arch/bsd/deps.mk
@@ -1,0 +1,1 @@
+#deps
--- a/src/libc/arch/linux/Makefile
+++ b/src/libc/arch/linux/Makefile
@@ -7,6 +7,7 @@
 	_brk.$O\
 	_getheap.$O\
 	_sigaction.$O\
+	_waitpid.$O\
 
 all: $(OBJS)
 
--- /dev/null
+++ b/src/libc/arch/linux/_waitpid.c
@@ -1,0 +1,1 @@
+#include "../bsd/_waitpid.c"
--- a/src/libc/objs/amd64-linux.mk
+++ b/src/libc/objs/amd64-linux.mk
@@ -34,6 +34,7 @@
 	arch/linux/_brk.$O\
 	arch/linux/_getheap.$O\
 	arch/linux/_sigaction.$O\
+	arch/linux/_waitpid.$O\
 	arch/posix/_open.$O\
 	arch/posix/_systime.$O\
 	arch/posix/_tzone.$O\
--- a/src/libc/objs/amd64-netbsd.mk
+++ b/src/libc/objs/amd64-netbsd.mk
@@ -26,6 +26,7 @@
 	arch/amd64/strchr.$O\
 	arch/amd64/strcmp.$O\
 	arch/amd64/strcpy.$O\
+	arch/bsd/_waitpid.$O\
 	arch/netbsd/_sigaction.$O\
 	arch/posix/_getheap.$O\
 	arch/posix/_open.$O\
--- a/src/libc/objs/amd64-openbsd.mk
+++ b/src/libc/objs/amd64-openbsd.mk
@@ -26,6 +26,7 @@
 	arch/amd64/strchr.$O\
 	arch/amd64/strcmp.$O\
 	arch/amd64/strcpy.$O\
+	arch/bsd/_waitpid.$O\
 	arch/posix/_getheap.$O\
 	arch/posix/_open.$O\
 	arch/posix/_systime.$O\