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Message-Id: <200607270308.13007.arnd.bergmann@de.ibm.com>
Date: Thu, 27 Jul 2006 03:08:12 +0200
From: Arnd Bergmann <arnd.bergmann@...ibm.com>
To: Heiko Carstens <heiko.carstens@...ibm.com>
Cc: linux-kernel@...r.kernel.org,
Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: reference: ncpfs: move ioctl32 code to fs/ncpfs/ioctl.c
On Thursday 27 July 2006 03:03, Arnd Bergmann wrote:
>
> I'm also posting the two patches I made a long time ago as a reference.
>
Ok, I just realized that this was not using a merged
->compat_ioctl/->unlocked_ioctl function yet, but wth, here
it is anyway.
Subject: ncpfs: move ioctl32 code to fs/ncpfs/ioctl.c
The ncp specific compat ioctls are clearly local to one
file system, so the code can better live there.
This could be further improved by getting rid of get_fs/set_fs
in the future.
CC: vandrove@...cvut.cz
CC: linware@...cvut.cz
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Index: linux-cg/fs/compat_ioctl.c
===================================================================
--- linux-cg.orig/fs/compat_ioctl.c 2005-11-05 14:22:34.000000000 +0100
+++ linux-cg/fs/compat_ioctl.c 2005-11-05 15:47:28.000000000 +0100
@@ -718,193 +718,6 @@
return sys_ioctl(fd, cmd, (unsigned long)tdata);
}
-#if defined(CONFIG_NCP_FS) || defined(CONFIG_NCP_FS_MODULE)
-struct ncp_ioctl_request_32 {
- u32 function;
- u32 size;
- compat_caddr_t data;
-};
-
-struct ncp_fs_info_v2_32 {
- s32 version;
- u32 mounted_uid;
- u32 connection;
- u32 buffer_size;
-
- u32 volume_number;
- u32 directory_id;
-
- u32 dummy1;
- u32 dummy2;
- u32 dummy3;
-};
-
-struct ncp_objectname_ioctl_32
-{
- s32 auth_type;
- u32 object_name_len;
- compat_caddr_t object_name; /* an userspace data, in most cases user name */
-};
-
-struct ncp_privatedata_ioctl_32
-{
- u32 len;
- compat_caddr_t data; /* ~1000 for NDS */
-};
-
-#define NCP_IOC_NCPREQUEST_32 _IOR('n', 1, struct ncp_ioctl_request_32)
-#define NCP_IOC_GETMOUNTUID2_32 _IOW('n', 2, u32)
-#define NCP_IOC_GET_FS_INFO_V2_32 _IOWR('n', 4, struct ncp_fs_info_v2_32)
-#define NCP_IOC_GETOBJECTNAME_32 _IOWR('n', 9, struct ncp_objectname_ioctl_32)
-#define NCP_IOC_SETOBJECTNAME_32 _IOR('n', 9, struct ncp_objectname_ioctl_32)
-#define NCP_IOC_GETPRIVATEDATA_32 _IOWR('n', 10, struct ncp_privatedata_ioctl_32)
-#define NCP_IOC_SETPRIVATEDATA_32 _IOR('n', 10, struct ncp_privatedata_ioctl_32)
-
-static int do_ncp_ncprequest(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- struct ncp_ioctl_request_32 n32;
- struct ncp_ioctl_request __user *p = compat_alloc_user_space(sizeof(*p));
-
- if (copy_from_user(&n32, compat_ptr(arg), sizeof(n32)) ||
- put_user(n32.function, &p->function) ||
- put_user(n32.size, &p->size) ||
- put_user(compat_ptr(n32.data), &p->data))
- return -EFAULT;
-
- return sys_ioctl(fd, NCP_IOC_NCPREQUEST, (unsigned long)p);
-}
-
-static int do_ncp_getmountuid2(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- mm_segment_t old_fs = get_fs();
- __kernel_uid_t kuid;
- int err;
-
- cmd = NCP_IOC_GETMOUNTUID2;
-
- set_fs(KERNEL_DS);
- err = sys_ioctl(fd, cmd, (unsigned long)&kuid);
- set_fs(old_fs);
-
- if (!err)
- err = put_user(kuid,
- (unsigned int __user *) compat_ptr(arg));
-
- return err;
-}
-
-static int do_ncp_getfsinfo2(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- mm_segment_t old_fs = get_fs();
- struct ncp_fs_info_v2_32 n32;
- struct ncp_fs_info_v2 n;
- int err;
-
- if (copy_from_user(&n32, compat_ptr(arg), sizeof(n32)))
- return -EFAULT;
- if (n32.version != NCP_GET_FS_INFO_VERSION_V2)
- return -EINVAL;
- n.version = NCP_GET_FS_INFO_VERSION_V2;
-
- set_fs(KERNEL_DS);
- err = sys_ioctl(fd, NCP_IOC_GET_FS_INFO_V2, (unsigned long)&n);
- set_fs(old_fs);
-
- if (!err) {
- n32.version = n.version;
- n32.mounted_uid = n.mounted_uid;
- n32.connection = n.connection;
- n32.buffer_size = n.buffer_size;
- n32.volume_number = n.volume_number;
- n32.directory_id = n.directory_id;
- n32.dummy1 = n.dummy1;
- n32.dummy2 = n.dummy2;
- n32.dummy3 = n.dummy3;
- err = copy_to_user(compat_ptr(arg), &n32, sizeof(n32)) ? -EFAULT : 0;
- }
- return err;
-}
-
-static int do_ncp_getobjectname(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- struct ncp_objectname_ioctl_32 n32, __user *p32 = compat_ptr(arg);
- struct ncp_objectname_ioctl __user *p = compat_alloc_user_space(sizeof(*p));
- s32 auth_type;
- u32 name_len;
- int err;
-
- if (copy_from_user(&n32, p32, sizeof(n32)) ||
- put_user(n32.object_name_len, &p->object_name_len) ||
- put_user(compat_ptr(n32.object_name), &p->object_name))
- return -EFAULT;
-
- err = sys_ioctl(fd, NCP_IOC_GETOBJECTNAME, (unsigned long)p);
- if (err)
- return err;
-
- if (get_user(auth_type, &p->auth_type) ||
- put_user(auth_type, &p32->auth_type) ||
- get_user(name_len, &p->object_name_len) ||
- put_user(name_len, &p32->object_name_len))
- return -EFAULT;
-
- return 0;
-}
-
-static int do_ncp_setobjectname(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- struct ncp_objectname_ioctl_32 n32, __user *p32 = compat_ptr(arg);
- struct ncp_objectname_ioctl __user *p = compat_alloc_user_space(sizeof(*p));
-
- if (copy_from_user(&n32, p32, sizeof(n32)) ||
- put_user(n32.auth_type, &p->auth_type) ||
- put_user(n32.object_name_len, &p->object_name_len) ||
- put_user(compat_ptr(n32.object_name), &p->object_name))
- return -EFAULT;
-
- return sys_ioctl(fd, NCP_IOC_SETOBJECTNAME, (unsigned long)p);
-}
-
-static int do_ncp_getprivatedata(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- struct ncp_privatedata_ioctl_32 n32, __user *p32 = compat_ptr(arg);
- struct ncp_privatedata_ioctl __user *p =
- compat_alloc_user_space(sizeof(*p));
- u32 len;
- int err;
-
- if (copy_from_user(&n32, p32, sizeof(n32)) ||
- put_user(n32.len, &p->len) ||
- put_user(compat_ptr(n32.data), &p->data))
- return -EFAULT;
-
- err = sys_ioctl(fd, NCP_IOC_GETPRIVATEDATA, (unsigned long)p);
- if (err)
- return err;
-
- if (get_user(len, &p->len) ||
- put_user(len, &p32->len))
- return -EFAULT;
-
- return 0;
-}
-
-static int do_ncp_setprivatedata(unsigned int fd, unsigned int cmd, unsigned long arg)
-{
- struct ncp_privatedata_ioctl_32 n32;
- struct ncp_privatedata_ioctl_32 __user *p32 = compat_ptr(arg);
- struct ncp_privatedata_ioctl __user *p =
- compat_alloc_user_space(sizeof(*p));
-
- if (copy_from_user(&n32, p32, sizeof(n32)) ||
- put_user(n32.len, &p->len) ||
- put_user(compat_ptr(n32.data), &p->data))
- return -EFAULT;
-
- return sys_ioctl(fd, NCP_IOC_SETPRIVATEDATA, (unsigned long)p);
-}
-#endif
-
#undef CODE
#endif
@@ -937,15 +750,5 @@
HANDLE_IOCTL(I2C_RDWR, do_i2c_rdwr_ioctl)
HANDLE_IOCTL(I2C_SMBUS, do_i2c_smbus_ioctl)
-#if defined(CONFIG_NCP_FS) || defined(CONFIG_NCP_FS_MODULE)
-HANDLE_IOCTL(NCP_IOC_NCPREQUEST_32, do_ncp_ncprequest)
-HANDLE_IOCTL(NCP_IOC_GETMOUNTUID2_32, do_ncp_getmountuid2)
-HANDLE_IOCTL(NCP_IOC_GET_FS_INFO_V2_32, do_ncp_getfsinfo2)
-HANDLE_IOCTL(NCP_IOC_GETOBJECTNAME_32, do_ncp_getobjectname)
-HANDLE_IOCTL(NCP_IOC_SETOBJECTNAME_32, do_ncp_setobjectname)
-HANDLE_IOCTL(NCP_IOC_GETPRIVATEDATA_32, do_ncp_getprivatedata)
-HANDLE_IOCTL(NCP_IOC_SETPRIVATEDATA_32, do_ncp_setprivatedata)
-#endif
-
#undef DECLARES
#endif
Index: linux-cg/fs/ncpfs/dir.c
===================================================================
--- linux-cg.orig/fs/ncpfs/dir.c 2005-11-05 14:19:13.000000000 +0100
+++ linux-cg/fs/ncpfs/dir.c 2005-11-05 14:22:34.000000000 +0100
@@ -54,6 +54,9 @@
.read = generic_read_dir,
.readdir = ncp_readdir,
.ioctl = ncp_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = ncp_compat_ioctl,
+#endif
};
struct inode_operations ncp_dir_inode_operations =
Index: linux-cg/fs/ncpfs/file.c
===================================================================
--- linux-cg.orig/fs/ncpfs/file.c 2005-11-05 14:19:13.000000000 +0100
+++ linux-cg/fs/ncpfs/file.c 2005-11-05 14:22:34.000000000 +0100
@@ -9,6 +9,7 @@
#include <asm/uaccess.h>
#include <asm/system.h>
+#include <linux/config.h>
#include <linux/time.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -289,6 +290,9 @@
.read = ncp_file_read,
.write = ncp_file_write,
.ioctl = ncp_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = ncp_compat_ioctl,
+#endif
.mmap = ncp_mmap,
.release = ncp_release,
.fsync = ncp_fsync,
Index: linux-cg/fs/ncpfs/ioctl.c
===================================================================
--- linux-cg.orig/fs/ncpfs/ioctl.c 2005-11-05 14:19:13.000000000 +0100
+++ linux-cg/fs/ncpfs/ioctl.c 2005-11-05 15:44:12.000000000 +0100
@@ -8,8 +8,7 @@
*/
#include <linux/config.h>
-
-#include <asm/uaccess.h>
+#include <linux/compat.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/ioctl.h>
@@ -20,6 +19,8 @@
#include <linux/ncp_fs.h>
+#include <asm/uaccess.h>
+
#include "ncplib_kernel.h"
/* maximum limit for ncp_objectname_ioctl */
@@ -647,3 +648,239 @@
/* #endif */
return -EINVAL;
}
+
+#ifdef CONFIG_COMPAT
+struct ncp_ioctl_request_32 {
+ u32 function;
+ u32 size;
+ compat_caddr_t data;
+};
+
+struct ncp_fs_info_v2_32 {
+ s32 version;
+ u32 mounted_uid;
+ u32 connection;
+ u32 buffer_size;
+
+ u32 volume_number;
+ u32 directory_id;
+
+ u32 dummy1;
+ u32 dummy2;
+ u32 dummy3;
+};
+
+struct ncp_objectname_ioctl_32
+{
+ s32 auth_type;
+ u32 object_name_len;
+ compat_caddr_t object_name; /* an userspace data, in most cases user name */
+};
+
+struct ncp_privatedata_ioctl_32
+{
+ u32 len;
+ compat_caddr_t data; /* ~1000 for NDS */
+};
+
+#define NCP_IOC_NCPREQUEST_32 _IOR('n', 1, struct ncp_ioctl_request_32)
+#define NCP_IOC_GETMOUNTUID2_32 _IOW('n', 2, u32)
+#define NCP_IOC_GET_FS_INFO_V2_32 _IOWR('n', 4, struct ncp_fs_info_v2_32)
+#define NCP_IOC_GETOBJECTNAME_32 _IOWR('n', 9, struct ncp_objectname_ioctl_32)
+#define NCP_IOC_SETOBJECTNAME_32 _IOR('n', 9, struct ncp_objectname_ioctl_32)
+#define NCP_IOC_GETPRIVATEDATA_32 _IOWR('n', 10, struct ncp_privatedata_ioctl_32)
+#define NCP_IOC_SETPRIVATEDATA_32 _IOR('n', 10, struct ncp_privatedata_ioctl_32)
+
+static int do_ncp_ncprequest(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct ncp_ioctl_request_32 n32;
+ struct ncp_ioctl_request __user *p = compat_alloc_user_space(sizeof(*p));
+
+ if (copy_from_user(&n32, compat_ptr(arg), sizeof(n32)) ||
+ put_user(n32.function, &p->function) ||
+ put_user(n32.size, &p->size) ||
+ put_user(compat_ptr(n32.data), &p->data))
+ return -EFAULT;
+
+ return ncp_ioctl(inode, file, NCP_IOC_NCPREQUEST, (unsigned long)p);
+}
+
+static int do_ncp_getmountuid2(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ mm_segment_t old_fs = get_fs();
+ __kernel_uid_t kuid;
+ int err;
+
+ cmd = NCP_IOC_GETMOUNTUID2;
+
+ set_fs(KERNEL_DS);
+ err = ncp_ioctl(inode, file, cmd, (unsigned long)&kuid);
+ set_fs(old_fs);
+
+ if (!err)
+ err = put_user(kuid,
+ (unsigned int __user *) compat_ptr(arg));
+
+ return err;
+}
+
+static int do_ncp_getfsinfo2(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ mm_segment_t old_fs = get_fs();
+ struct ncp_fs_info_v2_32 n32;
+ struct ncp_fs_info_v2 n;
+ int err;
+
+ if (copy_from_user(&n32, compat_ptr(arg), sizeof(n32)))
+ return -EFAULT;
+ if (n32.version != NCP_GET_FS_INFO_VERSION_V2)
+ return -EINVAL;
+ n.version = NCP_GET_FS_INFO_VERSION_V2;
+
+ set_fs(KERNEL_DS);
+ err = ncp_ioctl(inode, file, NCP_IOC_GET_FS_INFO_V2, (unsigned long)&n);
+ set_fs(old_fs);
+
+ if (!err) {
+ n32.version = n.version;
+ n32.mounted_uid = n.mounted_uid;
+ n32.connection = n.connection;
+ n32.buffer_size = n.buffer_size;
+ n32.volume_number = n.volume_number;
+ n32.directory_id = n.directory_id;
+ n32.dummy1 = n.dummy1;
+ n32.dummy2 = n.dummy2;
+ n32.dummy3 = n.dummy3;
+ err = copy_to_user(compat_ptr(arg), &n32, sizeof(n32)) ? -EFAULT : 0;
+ }
+ return err;
+}
+
+static int do_ncp_getobjectname(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct ncp_objectname_ioctl_32 n32, __user *p32 = compat_ptr(arg);
+ struct ncp_objectname_ioctl __user *p = compat_alloc_user_space(sizeof(*p));
+ s32 auth_type;
+ u32 name_len;
+ int err;
+
+ if (copy_from_user(&n32, p32, sizeof(n32)) ||
+ put_user(n32.object_name_len, &p->object_name_len) ||
+ put_user(compat_ptr(n32.object_name), &p->object_name))
+ return -EFAULT;
+
+ err = ncp_ioctl(inode, file, NCP_IOC_GETOBJECTNAME, (unsigned long)p);
+ if (err)
+ return err;
+
+ if (get_user(auth_type, &p->auth_type) ||
+ put_user(auth_type, &p32->auth_type) ||
+ get_user(name_len, &p->object_name_len) ||
+ put_user(name_len, &p32->object_name_len))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int do_ncp_setobjectname(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct ncp_objectname_ioctl_32 n32, __user *p32 = compat_ptr(arg);
+ struct ncp_objectname_ioctl __user *p = compat_alloc_user_space(sizeof(*p));
+
+ if (copy_from_user(&n32, p32, sizeof(n32)) ||
+ put_user(n32.auth_type, &p->auth_type) ||
+ put_user(n32.object_name_len, &p->object_name_len) ||
+ put_user(compat_ptr(n32.object_name), &p->object_name))
+ return -EFAULT;
+
+ return ncp_ioctl(inode, file, NCP_IOC_SETOBJECTNAME, (unsigned long)p);
+}
+
+static int do_ncp_getprivatedata(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct ncp_privatedata_ioctl_32 n32, __user *p32 = compat_ptr(arg);
+ struct ncp_privatedata_ioctl __user *p =
+ compat_alloc_user_space(sizeof(*p));
+ u32 len;
+ int err;
+
+ if (copy_from_user(&n32, p32, sizeof(n32)) ||
+ put_user(n32.len, &p->len) ||
+ put_user(compat_ptr(n32.data), &p->data))
+ return -EFAULT;
+
+ err = ncp_ioctl(inode, file, NCP_IOC_GETPRIVATEDATA, (unsigned long)p);
+ if (err)
+ return err;
+
+ if (get_user(len, &p->len) ||
+ put_user(len, &p32->len))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int do_ncp_setprivatedata(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct ncp_privatedata_ioctl_32 n32;
+ struct ncp_privatedata_ioctl_32 __user *p32 = compat_ptr(arg);
+ struct ncp_privatedata_ioctl __user *p =
+ compat_alloc_user_space(sizeof(*p));
+
+ if (copy_from_user(&n32, p32, sizeof(n32)) ||
+ put_user(n32.len, &p->len) ||
+ put_user(compat_ptr(n32.data), &p->data))
+ return -EFAULT;
+
+ return ncp_ioctl(inode, file, NCP_IOC_SETPRIVATEDATA, (unsigned long)p);
+}
+
+long ncp_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct inode *inode = file->f_dentry->d_inode;
+ int ret;
+
+ ret = -ENOIOCTLCMD;
+ lock_kernel();
+ switch (cmd) {
+ case NCP_IOC_NCPREQUEST_32:
+ ret = do_ncp_ncprequest(inode, file, cmd, arg);
+ break;
+ case NCP_IOC_GETMOUNTUID2_32:
+ ret = do_ncp_getmountuid2(inode, file, cmd, arg);
+ break;
+ case NCP_IOC_GET_FS_INFO_V2_32:
+ ret = do_ncp_getfsinfo2(inode, file, cmd, arg);
+ break;
+ case NCP_IOC_GETOBJECTNAME_32:
+ ret = do_ncp_getobjectname(inode, file, cmd, arg);
+ break;
+ case NCP_IOC_SETOBJECTNAME_32:
+ ret = do_ncp_setobjectname(inode, file, cmd, arg);
+ break;
+ case NCP_IOC_GETPRIVATEDATA_32:
+ ret = do_ncp_getprivatedata(inode, file, cmd, arg);
+ break;
+ case NCP_IOC_SETPRIVATEDATA_32:
+ ret = do_ncp_setprivatedata(inode, file, cmd, arg);
+ break;
+ /* NCP ioctls which do not need any translations */
+ case NCP_IOC_CONN_LOGGED_IN:
+ case NCP_IOC_SIGN_INIT:
+ case NCP_IOC_SIGN_WANTED:
+ case NCP_IOC_SET_SIGN_WANTED:
+ case NCP_IOC_LOCKUNLOCK:
+ case NCP_IOC_GETROOT:
+ case NCP_IOC_SETROOT:
+ case NCP_IOC_GETCHARSETS:
+ case NCP_IOC_SETCHARSETS:
+ case NCP_IOC_GETDENTRYTTL:
+ case NCP_IOC_SETDENTRYTTL:
+ arg = (unsigned long) compat_ptr(arg);
+ ret = ncp_ioctl(inode, file, cmd, arg);
+ break;
+ }
+ unlock_kernel();
+ return ret;
+}
+#endif
Index: linux-cg/include/linux/compat_ioctl.h
===================================================================
--- linux-cg.orig/include/linux/compat_ioctl.h 2005-11-05 14:22:34.000000000 +0100
+++ linux-cg/include/linux/compat_ioctl.h 2005-11-05 15:47:28.000000000 +0100
@@ -368,18 +368,6 @@
/* Raw devices */
COMPATIBLE_IOCTL(RAW_SETBIND)
COMPATIBLE_IOCTL(RAW_GETBIND)
-/* NCP ioctls which do not need any translations */
-COMPATIBLE_IOCTL(NCP_IOC_CONN_LOGGED_IN)
-COMPATIBLE_IOCTL(NCP_IOC_SIGN_INIT)
-COMPATIBLE_IOCTL(NCP_IOC_SIGN_WANTED)
-COMPATIBLE_IOCTL(NCP_IOC_SET_SIGN_WANTED)
-COMPATIBLE_IOCTL(NCP_IOC_LOCKUNLOCK)
-COMPATIBLE_IOCTL(NCP_IOC_GETROOT)
-COMPATIBLE_IOCTL(NCP_IOC_SETROOT)
-COMPATIBLE_IOCTL(NCP_IOC_GETCHARSETS)
-COMPATIBLE_IOCTL(NCP_IOC_SETCHARSETS)
-COMPATIBLE_IOCTL(NCP_IOC_GETDENTRYTTL)
-COMPATIBLE_IOCTL(NCP_IOC_SETDENTRYTTL)
/* Little a */
COMPATIBLE_IOCTL(ATMSIGD_CTRL)
COMPATIBLE_IOCTL(ATMARPD_CTRL)
Index: linux-cg/include/linux/ncp_fs.h
===================================================================
--- linux-cg.orig/include/linux/ncp_fs.h 2005-11-05 14:19:13.000000000 +0100
+++ linux-cg/include/linux/ncp_fs.h 2005-11-05 14:22:34.000000000 +0100
@@ -244,6 +244,7 @@
/* linux/fs/ncpfs/ioctl.c */
int ncp_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
+long ncp_compat_ioctl(struct file *, unsigned int, unsigned long);
/* linux/fs/ncpfs/sock.c */
int ncp_request2(struct ncp_server *server, int function,
-
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