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-rw-r--r--libc/sysdeps/linux/common/Makefile8
-rw-r--r--libc/sysdeps/linux/common/syscalls.c14
-rw-r--r--libc/sysdeps/linux/common/wait.c8
-rw-r--r--libc/sysdeps/linux/common/wait3.c10
-rw-r--r--libc/sysdeps/linux/common/waitpid.c9
5 files changed, 29 insertions, 20 deletions
diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile
index 46fd22008..0d066bc8c 100644
--- a/libc/sysdeps/linux/common/Makefile
+++ b/libc/sysdeps/linux/common/Makefile
@@ -25,10 +25,10 @@ TOPDIR=../../../
include $(TOPDIR)Rules.mak
LIBC=$(TOPDIR)libc.a
-CSRC =closedir.c dirfd.c getdents.c getdnnm.c gethstnm.c getpagesize.c \
- isatty.c kernel_version.c mkfifo.c opendir.c readdir.c rewinddir.c \
- seekdir.c setegid.c seteuid.c setpgrp.c statfix.c tell.c telldir.c \
- wait.c wait3.c _xmknod.c libc_init.c errno.c
+CSRC= _xmknod.c waitpid.c getdents.c kernel_version.c rewinddir.c statfix.c \
+ getdnnm.c libc_init.c seekdir.c telldir.c tell.c gethstnm.c mkfifo.c \
+ setegid.c wait.c errno.c closedir.c getpagesize.c opendir.c seteuid.c \
+ wait3.c dirfd.c isatty.c readdir.c setpgrp.c
COBJS=$(patsubst %.c,%.o, $(CSRC))
NISRC= _fxstat.c _lxstat.c _xstat.c
diff --git a/libc/sysdeps/linux/common/syscalls.c b/libc/sysdeps/linux/common/syscalls.c
index 6a8f73eb9..931958de5 100644
--- a/libc/sysdeps/linux/common/syscalls.c
+++ b/libc/sysdeps/linux/common/syscalls.c
@@ -86,10 +86,7 @@ _syscall1(int, close, int, fd);
#endif
//#define __NR_waitpid 7
-#include <sys/wait.h>
-#ifdef L_waitpid
-_syscall3(pid_t, waitpid, pid_t, pid, int *, status, int, options);
-#endif
+// Implemented using wait4
//#define __NR_creat 8
#ifdef L_creat
@@ -792,9 +789,7 @@ _syscall0(int, vhangup);
//#define __NR_wait4 114
#ifdef L_wait4
-#include <sys/wait.h>
-_syscall4(pid_t, wait4, pid_t, pid, int *, status, int, options,
- struct rusage *, rusage);
+_syscall4(int, wait4, pid_t, pid, int *, status, int, opts, void *, rusage);
#endif
//#define __NR_swapoff 115
@@ -966,12 +961,7 @@ _syscall1(pid_t, getsid, pid_t, pid);
#endif
//#define __NR_fdatasync 148
-//
//#define __NR__sysctl 149
-//#ifdef L_sysctl
-//_syscall1(int, sysctl, struct __sysctl_args *, args);
-//#endif
-
//#define __NR_mlock 150
//#define __NR_munlock 151
//#define __NR_mlockall 152
diff --git a/libc/sysdeps/linux/common/wait.c b/libc/sysdeps/linux/common/wait.c
index dc9898617..6520013f0 100644
--- a/libc/sysdeps/linux/common/wait.c
+++ b/libc/sysdeps/linux/common/wait.c
@@ -3,7 +3,11 @@
#include <sys/wait.h>
#include <sys/resource.h>
-__pid_t wait(__WAIT_STATUS wait_stat)
+/* Wait for a child to die. When one does, put its status in *STAT_LOC
+ * and return its process ID. For errors, return (pid_t) -1. */
+__pid_t wait (__WAIT_STATUS_DEFN stat_loc)
{
- return wait4((-1) /* WAIT_ANY */, wait_stat, 0, NULL);
+ return wait4 (WAIT_ANY, stat_loc, 0, (struct rusage *) NULL);
}
+
+
diff --git a/libc/sysdeps/linux/common/wait3.c b/libc/sysdeps/linux/common/wait3.c
index 7448b6294..6a8bc77fc 100644
--- a/libc/sysdeps/linux/common/wait3.c
+++ b/libc/sysdeps/linux/common/wait3.c
@@ -3,7 +3,13 @@
#include <sys/wait.h>
#include <sys/resource.h>
-__pid_t wait3(__WAIT_STATUS wait_stat, int options, struct rusage *reserved)
+
+/* Wait for a child to exit. When one does, put its status in *STAT_LOC and
+ * return its process ID. For errors return (pid_t) -1. If USAGE is not nil,
+ * store information about the child's resource usage (as a `struct rusage')
+ * there. If the WUNTRACED bit is set in OPTIONS, return status for stopped
+ * children; otherwise don't. */
+pid_t wait3 (__WAIT_STATUS stat_loc, int options, struct rusage * usage)
{
- return wait4((-1) /* WAIT_ANY*/, wait_stat, options, reserved);
+ return wait4 (WAIT_ANY, stat_loc, options, usage);
}
diff --git a/libc/sysdeps/linux/common/waitpid.c b/libc/sysdeps/linux/common/waitpid.c
new file mode 100644
index 000000000..255a3c84e
--- /dev/null
+++ b/libc/sysdeps/linux/common/waitpid.c
@@ -0,0 +1,9 @@
+#include <syscall.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/resource.h>
+
+__pid_t waitpid(__pid_t pid, int *wait_stat, int options)
+{
+ return wait4(pid, wait_stat, options, NULL);
+}