Make ubase compile with musl-gcc

Makefile

@@ -3,7 +3,7 @@ include config.mk
 .POSIX:
 .SUFFIXES: .c .o
 
-HDR = arg.h grabmntinfo.h proc.h util.h
+HDR = arg.h grabmntinfo.h proc.h reboot.h util.h
 LIB = \
 	util/agetcwd.o      \
 	util/apathmax.o     \

chvt.c

@@ -1,5 +1,3 @@
-#include <linux/vt.h>
-#include <linux/kd.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -9,6 +7,11 @@
 #include <sys/ioctl.h>
 #include "util.h"
 
+#define KDGKBTYPE	0x4B33	/* get keyboard type */
+
+#define VT_ACTIVATE	0x5606	/* make vt active */
+#define VT_WAITACTIVE	0x5607	/* wait for vt active */
+
 char *vts[] = {
 	"/proc/self/fd/0",
 	"/dev/console",

halt.c

@@ -1,8 +1,8 @@
 /* See LICENSE file for copyright and license details. */
-#include <linux/reboot.h>
 #include <sys/syscall.h>
 #include <unistd.h>
 #include <stdio.h>
+#include "reboot.h"
 #include "util.h"
 
 static void

reboot.c

@@ -1,8 +1,8 @@
 /* See LICENSE file for copyright and license details. */
-#include <linux/reboot.h>
 #include <sys/syscall.h>
 #include <unistd.h>
 #include <stdio.h>
+#include "reboot.h"
 #include "util.h"
 
 static void

reboot.h

@@ -0,0 +1,32 @@
+/*
+ * Magic values required to use _reboot() system call.
+ */
+
+#define	LINUX_REBOOT_MAGIC1	0xfee1dead
+#define	LINUX_REBOOT_MAGIC2	672274793
+#define	LINUX_REBOOT_MAGIC2A	85072278
+#define	LINUX_REBOOT_MAGIC2B	369367448
+#define	LINUX_REBOOT_MAGIC2C	537993216
+
+
+/*
+ * Commands accepted by the _reboot() system call.
+ *
+ * RESTART     Restart system using default command and mode.
+ * HALT        Stop OS and give system control to ROM monitor, if any.
+ * CAD_ON      Ctrl-Alt-Del sequence causes RESTART command.
+ * CAD_OFF     Ctrl-Alt-Del sequence sends SIGINT to init task.
+ * POWER_OFF   Stop OS and remove all power from system, if possible.
+ * RESTART2    Restart system using given command string.
+ * SW_SUSPEND  Suspend system using software suspend if compiled in.
+ * KEXEC       Restart system using a previously loaded Linux kernel
+ */
+
+#define	LINUX_REBOOT_CMD_RESTART	0x01234567
+#define	LINUX_REBOOT_CMD_HALT		0xCDEF0123
+#define	LINUX_REBOOT_CMD_CAD_ON		0x89ABCDEF
+#define	LINUX_REBOOT_CMD_CAD_OFF	0x00000000
+#define	LINUX_REBOOT_CMD_POWER_OFF	0x4321FEDC
+#define	LINUX_REBOOT_CMD_RESTART2	0xA1B2C3D4
+#define	LINUX_REBOOT_CMD_SW_SUSPEND	0xD000FCE2
+#define	LINUX_REBOOT_CMD_KEXEC		0x45584543