linux-kernel - [PATCH 1/7] compat: add struct compat

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Date:	Fri,  6 Nov 2009 19:09:03 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-kernel@...r.kernel.org
Cc:	David Miller <davem@...emloft.net>, Christoph Hellwig <hch@....de>,
	netdev@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 1/7] compat: add struct compat_ifreq etc to compat.h

In order to move socket ioctl conversion code into multiple
places in the socket code, we need a common defintion of
the data structures it uses.

Also change the name from ifreq32 to compat_ifreq to
follow the naming convention for compat.h

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 include/linux/compat.h |   39 +++++++++++++++++++++++++++++++++++++++
 1 files changed, 39 insertions(+), 0 deletions(-)

diff --git a/include/linux/compat.h b/include/linux/compat.h
index af931ee..8311d2e 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -10,6 +10,8 @@
 #include <linux/stat.h>
 #include <linux/param.h>	/* for HZ */
 #include <linux/sem.h>
+#include <linux/socket.h>
+#include <linux/if.h>
 
 #include <asm/compat.h>
 #include <asm/siginfo.h>
@@ -154,6 +156,43 @@ typedef struct compat_sigevent {
 	} _sigev_un;
 } compat_sigevent_t;
 
+struct compat_ifmap {
+	compat_ulong_t mem_start;
+	compat_ulong_t mem_end;
+	unsigned short base_addr;
+	unsigned char irq;
+	unsigned char dma;
+	unsigned char port;
+};
+
+struct compat_ifreq {
+#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;
+                compat_int_t     ifru_ivalue;
+                compat_int_t     ifru_mtu;
+                struct  compat_ifmap ifru_map;
+                char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
+		char	ifru_newname[IFNAMSIZ];
+                compat_caddr_t ifru_data;
+	    /* XXXX? ifru_settings should be here */
+        } ifr_ifru;
+};
+
+struct compat_ifconf {
+        compat_int_t	ifc_len;                        /* size of buffer       */
+        compat_caddr_t  ifcbuf;
+};
+
 struct compat_robust_list {
 	compat_uptr_t			next;
 };
-- 
1.6.3.3

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