patch-2.3.99-pre9 linux/arch/mips64/kernel/ioctl32.c

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diff -u --recursive --new-file v2.3.99-pre8/linux/arch/mips64/kernel/ioctl32.c linux/arch/mips64/kernel/ioctl32.c
@@ -0,0 +1,529 @@
+/* $Id: ioctl32.c,v 1.1 2000/04/05 00:43:25 ulfc Exp $
+ * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
+ *
+ * Copyright (C) 2000 Silicon Graphics, Inc.
+ * Written by Ulf Carlsson (ulfc@engr.sgi.com)
+ *
+ * Mostly from the sparc64 ioctl32 implementation.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/file.h>
+#include <linux/vt.h>
+#include <linux/kd.h>
+#include <linux/netdevice.h>
+#include <linux/route.h>
+#include <asm/types.h>
+#include <asm/uaccess.h>
+
+#define A(__x) ((unsigned long)(__x))
+
+long sys_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg);
+
+struct timeval32 {
+	int tv_sec;
+	int tv_usec;
+};
+
+#define EXT2_IOC32_GETFLAGS               _IOR('f', 1, int)
+#define EXT2_IOC32_SETFLAGS               _IOW('f', 2, int)
+#define EXT2_IOC32_GETVERSION             _IOR('v', 1, int)
+#define EXT2_IOC32_SETVERSION             _IOW('v', 2, int)
+
+static int do_siocgstamp(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+	struct timeval32 *up = (struct timeval32 *)arg;
+	struct timeval ktv;
+	mm_segment_t old_fs = get_fs();
+	int err;
+
+	set_fs(KERNEL_DS);
+	err = sys_ioctl(fd, cmd, (unsigned long)&ktv);
+	set_fs(old_fs);
+	if(!err) {
+		err = put_user(ktv.tv_sec, &up->tv_sec);
+		err |= __put_user(ktv.tv_usec, &up->tv_usec);
+	}
+	return err;
+}
+
+struct ifmap32 {
+	unsigned int mem_start;
+	unsigned int mem_end;
+	unsigned short base_addr;
+	unsigned char irq;
+	unsigned char dma;
+	unsigned char port;
+};
+
+struct ifreq32 {
+#define IFHWADDRLEN     6
+#define IFNAMSIZ        16
+        union {
+                char    ifrn_name[IFNAMSIZ];	/* if name, e.g. "en0" */
+        } ifr_ifrn;
+        union {
+                struct  sockaddr ifru_addr;
+                struct  sockaddr ifru_dstaddr;
+                struct  sockaddr ifru_broadaddr;
+                struct  sockaddr ifru_netmask;
+                struct  sockaddr ifru_hwaddr;
+                short   ifru_flags;
+                int     ifru_ivalue;
+                int     ifru_mtu;
+                struct  ifmap32 ifru_map;
+                char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
+		char	ifru_newname[IFNAMSIZ];
+                __kernel_caddr_t32 ifru_data;
+        } ifr_ifru;
+};
+
+struct ifconf32 {
+        int     ifc_len;                        /* size of buffer       */
+        __kernel_caddr_t32  ifcbuf;
+};
+
+static int dev_ifname32(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+	struct ireq32 *uir32 = (struct ireq32 *)arg;
+	struct net_device *dev;
+	struct ifreq32 ifr32;
+
+	if (copy_from_user(&ifr32, uir32, sizeof(struct ifreq32)))
+		return -EFAULT;
+
+	read_lock(&dev_base_lock);
+	dev = __dev_get_by_index(ifr32.ifr_ifindex);
+	if (!dev) {
+		read_unlock(&dev_base_lock);
+		return -ENODEV;
+	}
+
+	strcpy(ifr32.ifr_name, dev->name);
+	read_unlock(&dev_base_lock);
+
+	if (copy_to_user(uir32, &ifr32, sizeof(struct ifreq32)))
+	    return -EFAULT;
+
+	return 0;
+}
+
+static inline int dev_ifconf(unsigned int fd, unsigned int cmd,
+			     unsigned long arg)
+{
+	struct ioconf32 *uifc32 = (struct ioconf32 *)arg;
+	struct ifconf32 ifc32;
+	struct ifconf ifc;
+	struct ifreq32 *ifr32;
+	struct ifreq *ifr;
+	mm_segment_t old_fs;
+	int len;
+	int err;
+
+	if (copy_from_user(&ifc32, uifc32, sizeof(struct ifconf32)))
+		return -EFAULT;
+
+	if(ifc32.ifcbuf == 0) {
+		ifc32.ifc_len = 0;
+		ifc.ifc_len = 0;
+		ifc.ifc_buf = NULL;
+	} else {
+		ifc.ifc_len = ((ifc32.ifc_len / sizeof (struct ifreq32))) *
+			sizeof (struct ifreq);
+		ifc.ifc_buf = kmalloc (ifc.ifc_len, GFP_KERNEL);
+		if (!ifc.ifc_buf)
+			return -ENOMEM;
+	}
+	ifr = ifc.ifc_req;
+	ifr32 = (struct ifreq32 *)A(ifc32.ifcbuf);
+	len = ifc32.ifc_len / sizeof (struct ifreq32);
+	while (len--) {
+		if (copy_from_user(ifr++, ifr32++, sizeof (struct ifreq32))) {
+			err = -EFAULT;
+			goto out;
+		}
+	}
+
+	old_fs = get_fs();
+	set_fs (KERNEL_DS);
+	err = sys_ioctl (fd, SIOCGIFCONF, (unsigned long)&ifc);	
+	set_fs (old_fs);
+	if (err)
+		goto out;
+
+	ifr = ifc.ifc_req;
+	ifr32 = (struct ifreq32 *)A(ifc32.ifcbuf);
+	len = ifc.ifc_len / sizeof (struct ifreq);
+	ifc32.ifc_len = len * sizeof (struct ifreq32);
+
+	while (len--) {
+		if (copy_to_user(ifr32++, ifr++, sizeof (struct ifreq32))) {
+			err = -EFAULT;
+			goto out;
+		}
+	}
+
+	if (copy_to_user(uifc32, &ifc32, sizeof(struct ifconf32))) {
+		err = -EFAULT;
+		goto out;
+	}
+out:
+	if(ifc.ifc_buf != NULL)
+		kfree (ifc.ifc_buf);
+	return err;
+}
+
+static inline int dev_ifsioc(unsigned int fd, unsigned int cmd,
+			     unsigned long arg)
+{
+	struct ifreq32 *uifr = (struct ifreq32 *)arg;
+	struct ifreq ifr;
+	mm_segment_t old_fs;
+	int err;
+	
+	switch (cmd) {
+	case SIOCSIFMAP:
+		err = copy_from_user(&ifr, uifr, sizeof(ifr.ifr_name));
+		err |= __get_user(ifr.ifr_map.mem_start, &(uifr->ifr_ifru.ifru_map.mem_start));
+		err |= __get_user(ifr.ifr_map.mem_end, &(uifr->ifr_ifru.ifru_map.mem_end));
+		err |= __get_user(ifr.ifr_map.base_addr, &(uifr->ifr_ifru.ifru_map.base_addr));
+		err |= __get_user(ifr.ifr_map.irq, &(uifr->ifr_ifru.ifru_map.irq));
+		err |= __get_user(ifr.ifr_map.dma, &(uifr->ifr_ifru.ifru_map.dma));
+		err |= __get_user(ifr.ifr_map.port, &(uifr->ifr_ifru.ifru_map.port));
+		if (err)
+			return -EFAULT;
+		break;
+	default:
+		if (copy_from_user(&ifr, uifr, sizeof(struct ifreq32)))
+			return -EFAULT;
+		break;
+	}
+	old_fs = get_fs();
+	set_fs (KERNEL_DS);
+	err = sys_ioctl (fd, cmd, (unsigned long)&ifr);
+	set_fs (old_fs);
+	if (!err) {
+		switch (cmd) {
+		case SIOCGIFFLAGS:
+		case SIOCGIFMETRIC:
+		case SIOCGIFMTU:
+		case SIOCGIFMEM:
+		case SIOCGIFHWADDR:
+		case SIOCGIFINDEX:
+		case SIOCGIFADDR:
+		case SIOCGIFBRDADDR:
+		case SIOCGIFDSTADDR:
+		case SIOCGIFNETMASK:
+		case SIOCGIFTXQLEN:
+			if (copy_to_user(uifr, &ifr, sizeof(struct ifreq32)))
+				return -EFAULT;
+			break;
+		case SIOCGIFMAP:
+			err = copy_to_user(uifr, &ifr, sizeof(ifr.ifr_name));
+			err |= __put_user(ifr.ifr_map.mem_start, &(uifr->ifr_ifru.ifru_map.mem_start));
+			err |= __put_user(ifr.ifr_map.mem_end, &(uifr->ifr_ifru.ifru_map.mem_end));
+			err |= __put_user(ifr.ifr_map.base_addr, &(uifr->ifr_ifru.ifru_map.base_addr));
+			err |= __put_user(ifr.ifr_map.irq, &(uifr->ifr_ifru.ifru_map.irq));
+			err |= __put_user(ifr.ifr_map.dma, &(uifr->ifr_ifru.ifru_map.dma));
+			err |= __put_user(ifr.ifr_map.port, &(uifr->ifr_ifru.ifru_map.port));
+			if (err)
+				err = -EFAULT;
+			break;
+		}
+	}
+	return err;
+}
+
+struct rtentry32
+{
+	unsigned int	rt_pad1;
+	struct sockaddr	rt_dst;		/* target address		*/
+	struct sockaddr	rt_gateway;	/* gateway addr (RTF_GATEWAY)	*/
+	struct sockaddr	rt_genmask;	/* target network mask (IP)	*/
+	unsigned short	rt_flags;
+	short		rt_pad2;
+	unsigned int	rt_pad3;
+	unsigned int	rt_pad4;
+	short		rt_metric;	/* +1 for binary compatibility!	*/
+	unsigned int	rt_dev;		/* forcing the device at add	*/
+	unsigned int	rt_mtu;		/* per route MTU/Window 	*/
+#ifndef __KERNEL__
+#define rt_mss	rt_mtu			/* Compatibility :-(            */
+#endif
+	unsigned int	rt_window;	/* Window clamping 		*/
+	unsigned short	rt_irtt;	/* Initial RTT			*/
+};
+
+static inline int routing_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+	struct rtentry32 *ur = (struct rtentry32 *)arg;
+	struct rtentry r;
+	char devname[16];
+	u32 rtdev;
+	int ret;
+	mm_segment_t old_fs = get_fs();
+	
+	ret = copy_from_user (&r.rt_dst, &(ur->rt_dst), 3 * sizeof(struct sockaddr));
+	ret |= __get_user (r.rt_flags, &(ur->rt_flags));
+	ret |= __get_user (r.rt_metric, &(ur->rt_metric));
+	ret |= __get_user (r.rt_mtu, &(ur->rt_mtu));
+	ret |= __get_user (r.rt_window, &(ur->rt_window));
+	ret |= __get_user (r.rt_irtt, &(ur->rt_irtt));
+	ret |= __get_user (rtdev, &(ur->rt_dev));
+	if (rtdev) {
+		ret |= copy_from_user (devname, (char *)A(rtdev), 15);
+		r.rt_dev = devname; devname[15] = 0;
+	} else
+		r.rt_dev = 0;
+	if (ret)
+		return -EFAULT;
+	set_fs (KERNEL_DS);
+	ret = sys_ioctl (fd, cmd, (long)&r);
+	set_fs (old_fs);
+	return ret;
+}
+
+static int do_ext2_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+	/* These are just misnamed, they actually get/put from/to user an int */
+	switch (cmd) {
+	case EXT2_IOC32_GETFLAGS: cmd = EXT2_IOC_GETFLAGS; break;
+	case EXT2_IOC32_SETFLAGS: cmd = EXT2_IOC_SETFLAGS; break;
+	case EXT2_IOC32_GETVERSION: cmd = EXT2_IOC_GETVERSION; break;
+	case EXT2_IOC32_SETVERSION: cmd = EXT2_IOC_SETVERSION; break;
+	}
+	return sys_ioctl(fd, cmd, arg);
+}
+
+static int w_long(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+	mm_segment_t old_fs = get_fs();
+	int err;
+	unsigned long val;
+	
+	set_fs (KERNEL_DS);
+	err = sys_ioctl(fd, cmd, (unsigned long)&val);
+	set_fs (old_fs);
+	if (!err && put_user((unsigned int) val, (u32 *)arg))
+		return -EFAULT;
+	return err;
+}
+
+struct ioctl32_handler {
+	unsigned int cmd;
+	int (*function)(unsigned int, unsigned int, unsigned long);
+};
+
+struct ioctl32_list {
+	struct ioctl32_handler handler;
+	struct ioctl32_list *next;
+};
+
+#define IOCTL32_DEFAULT(cmd)		{ { cmd, (void *) sys_ioctl }, 0 }
+#define IOCTL32_HANDLER(cmd, handler)	{ { cmd, (void *) handler }, 0 }
+
+static struct ioctl32_list ioctl32_handler_table[] = {
+	IOCTL32_DEFAULT(TCGETA),
+	IOCTL32_DEFAULT(TCSETA),
+	IOCTL32_DEFAULT(TCSETAW),
+	IOCTL32_DEFAULT(TCSETAF),
+	IOCTL32_DEFAULT(TCSBRK),
+	IOCTL32_DEFAULT(TCXONC),
+	IOCTL32_DEFAULT(TCFLSH),
+	IOCTL32_DEFAULT(TCGETS),
+	IOCTL32_DEFAULT(TCSETS),
+	IOCTL32_DEFAULT(TCSETSW),
+	IOCTL32_DEFAULT(TCSETSF),
+	IOCTL32_DEFAULT(TIOCLINUX),
+
+	IOCTL32_DEFAULT(TIOCGETD),
+	IOCTL32_DEFAULT(TIOCSETD),
+	IOCTL32_DEFAULT(TIOCEXCL),
+	IOCTL32_DEFAULT(TIOCNXCL),
+	IOCTL32_DEFAULT(TIOCCONS),
+	IOCTL32_DEFAULT(TIOCGSOFTCAR),
+	IOCTL32_DEFAULT(TIOCSSOFTCAR),
+	IOCTL32_DEFAULT(TIOCSWINSZ),
+	IOCTL32_DEFAULT(TIOCGWINSZ),
+	IOCTL32_DEFAULT(TIOCMGET),
+	IOCTL32_DEFAULT(TIOCMBIC),
+	IOCTL32_DEFAULT(TIOCMBIS),
+	IOCTL32_DEFAULT(TIOCMSET),
+	IOCTL32_DEFAULT(TIOCPKT),
+	IOCTL32_DEFAULT(TIOCNOTTY),
+	IOCTL32_DEFAULT(TIOCSTI),
+	IOCTL32_DEFAULT(TIOCOUTQ),
+	IOCTL32_DEFAULT(TIOCSPGRP),
+	IOCTL32_DEFAULT(TIOCGPGRP),
+	IOCTL32_DEFAULT(TIOCSCTTY),
+	IOCTL32_DEFAULT(TIOCGPTN),
+	IOCTL32_DEFAULT(TIOCSPTLCK),
+	IOCTL32_DEFAULT(TIOCGSERIAL),
+	IOCTL32_DEFAULT(TIOCSSERIAL),
+	IOCTL32_DEFAULT(TIOCSERGETLSR),
+
+	IOCTL32_DEFAULT(FIOCLEX),
+	IOCTL32_DEFAULT(FIONCLEX),
+	IOCTL32_DEFAULT(FIOASYNC),
+	IOCTL32_DEFAULT(FIONBIO),
+	IOCTL32_DEFAULT(FIONREAD),
+
+	IOCTL32_DEFAULT(PIO_FONT),
+	IOCTL32_DEFAULT(GIO_FONT),
+	IOCTL32_DEFAULT(KDSIGACCEPT),
+	IOCTL32_DEFAULT(KDGETKEYCODE),
+	IOCTL32_DEFAULT(KDSETKEYCODE),
+	IOCTL32_DEFAULT(KIOCSOUND),
+	IOCTL32_DEFAULT(KDMKTONE),
+	IOCTL32_DEFAULT(KDGKBTYPE),
+	IOCTL32_DEFAULT(KDSETMODE),
+	IOCTL32_DEFAULT(KDGETMODE),
+	IOCTL32_DEFAULT(KDSKBMODE),
+	IOCTL32_DEFAULT(KDGKBMODE),
+	IOCTL32_DEFAULT(KDSKBMETA),
+	IOCTL32_DEFAULT(KDGKBMETA),
+	IOCTL32_DEFAULT(KDGKBENT),
+	IOCTL32_DEFAULT(KDSKBENT),
+	IOCTL32_DEFAULT(KDGKBSENT),
+	IOCTL32_DEFAULT(KDSKBSENT),
+	IOCTL32_DEFAULT(KDGKBDIACR),
+	IOCTL32_DEFAULT(KDSKBDIACR),
+	IOCTL32_DEFAULT(KDGKBLED),
+	IOCTL32_DEFAULT(KDSKBLED),
+	IOCTL32_DEFAULT(KDGETLED),
+	IOCTL32_DEFAULT(KDSETLED),
+	IOCTL32_DEFAULT(GIO_SCRNMAP),
+	IOCTL32_DEFAULT(PIO_SCRNMAP),
+	IOCTL32_DEFAULT(GIO_UNISCRNMAP),
+	IOCTL32_DEFAULT(PIO_UNISCRNMAP),
+	IOCTL32_DEFAULT(PIO_FONTRESET),
+	IOCTL32_DEFAULT(PIO_UNIMAPCLR),
+
+	IOCTL32_DEFAULT(VT_SETMODE),
+	IOCTL32_DEFAULT(VT_GETMODE),
+	IOCTL32_DEFAULT(VT_GETSTATE),
+	IOCTL32_DEFAULT(VT_OPENQRY),
+	IOCTL32_DEFAULT(VT_ACTIVATE),
+	IOCTL32_DEFAULT(VT_WAITACTIVE),
+	IOCTL32_DEFAULT(VT_RELDISP),
+	IOCTL32_DEFAULT(VT_DISALLOCATE),
+	IOCTL32_DEFAULT(VT_RESIZE),
+	IOCTL32_DEFAULT(VT_RESIZEX),
+	IOCTL32_DEFAULT(VT_LOCKSWITCH),
+	IOCTL32_DEFAULT(VT_UNLOCKSWITCH),
+
+	IOCTL32_HANDLER(SIOCGIFNAME, dev_ifname32),
+	IOCTL32_HANDLER(SIOCGIFCONF, dev_ifconf),
+	IOCTL32_HANDLER(SIOCGIFFLAGS, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFFLAGS, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFMETRIC, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFMETRIC, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFMTU, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFMTU, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFMEM, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFMEM, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFHWADDR, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFHWADDR, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCADDMULTI, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCDELMULTI, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFINDEX, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFMAP, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFMAP, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFADDR, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFADDR, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFBRDADDR, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFBRDADDR, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFDSTADDR, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFDSTADDR, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFNETMASK, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFNETMASK, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFPFLAGS, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFPFLAGS, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCGIFTXQLEN, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCSIFTXQLEN, dev_ifsioc),
+	IOCTL32_HANDLER(SIOCADDRT, routing_ioctl),
+	IOCTL32_HANDLER(SIOCDELRT, routing_ioctl),
+
+	IOCTL32_HANDLER(EXT2_IOC32_GETFLAGS, do_ext2_ioctl),
+	IOCTL32_HANDLER(EXT2_IOC32_SETFLAGS, do_ext2_ioctl),
+	IOCTL32_HANDLER(EXT2_IOC32_GETVERSION, do_ext2_ioctl),
+	IOCTL32_HANDLER(EXT2_IOC32_SETVERSION, do_ext2_ioctl),
+
+	IOCTL32_HANDLER(BLKGETSIZE, w_long)
+
+};
+
+#define NR_IOCTL32_HANDLERS	(sizeof(ioctl32_handler_table) /	\
+				 sizeof(ioctl32_handler_table[0]))
+
+static struct ioctl32_list *ioctl32_hash_table[1024];
+
+static inline int ioctl32_hash(unsigned int cmd)
+{
+	return ((cmd >> 6) ^ (cmd >> 4) ^ cmd) & 0x3ff;
+}
+
+int sys32_ioctl(unsigned int fd, unsigned int cmd, unsigned int arg)
+{
+	int (*handler)(unsigned int, unsigned int, unsigned long, struct file * filp);
+	struct file *filp;
+	struct ioctl32_list *l;
+	int error;
+
+	l = ioctl32_hash_table[ioctl32_hash(cmd)];
+
+	error = -EBADF;
+
+	filp = fget(fd);
+	if (!filp)
+		return error;
+
+	if (!filp->f_op || !filp->f_op->ioctl) {
+		error = sys_ioctl (fd, cmd, arg);
+		goto out;
+	}
+
+	while (l && l->handler.cmd != cmd)
+		l = l->next;
+
+	if (l) {
+		handler = (void *)l->handler.function;
+		error = handler(fd, cmd, arg, filp);
+	} else {
+		error = -EINVAL;
+		printk("unknown ioctl: %08x\n", cmd);
+	}
+out:
+	fput(filp);
+	return error;
+}
+
+static void ioctl32_insert(struct ioctl32_list *entry)
+{
+	int hash = ioctl32_hash(entry->handler.cmd);
+	if (!ioctl32_hash_table[hash])
+		ioctl32_hash_table[hash] = entry;
+	else {
+		struct ioctl32_list *l;
+		l = ioctl32_hash_table[hash];
+		while (l->next)
+			l = l->next;
+		l->next = entry;
+		entry->next = 0;
+	}
+}
+
+static int __init init_ioctl32(void)
+{
+	int i;
+	for (i = 0; i < NR_IOCTL32_HANDLERS; i++)
+		ioctl32_insert(&ioctl32_handler_table[i]);
+	return 0;
+}
+
+__initcall(init_ioctl32);
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