| 1 |
62 |
marcus.erl |
/*
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* ioctl.c
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*
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* Copyright (C) 1995, 1996 by Volker Lendecke
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* Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
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* Modified 1998, 1999 Wolfram Pienkoss for NLS
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*
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*/
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#include <linux/capability.h>
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#include <linux/compat.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/ioctl.h>
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#include <linux/time.h>
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#include <linux/mm.h>
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#include <linux/highuid.h>
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#include <linux/smp_lock.h>
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#include <linux/vmalloc.h>
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#include <linux/sched.h>
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#include <linux/ncp_fs.h>
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#include <asm/uaccess.h>
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#include "ncplib_kernel.h"
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/* maximum limit for ncp_objectname_ioctl */
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#define NCP_OBJECT_NAME_MAX_LEN 4096
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/* maximum limit for ncp_privatedata_ioctl */
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#define NCP_PRIVATE_DATA_MAX_LEN 8192
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/* maximum negotiable packet size */
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#define NCP_PACKET_SIZE_INTERNAL 65536
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static int
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ncp_get_fs_info(struct ncp_server * server, struct file *file,
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struct ncp_fs_info __user *arg)
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{
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struct inode *inode = file->f_path.dentry->d_inode;
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struct ncp_fs_info info;
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if ((file_permission(file, MAY_WRITE) != 0)
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&& (current->uid != server->m.mounted_uid)) {
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return -EACCES;
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}
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if (copy_from_user(&info, arg, sizeof(info)))
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return -EFAULT;
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if (info.version != NCP_GET_FS_INFO_VERSION) {
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DPRINTK("info.version invalid: %d\n", info.version);
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return -EINVAL;
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}
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/* TODO: info.addr = server->m.serv_addr; */
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SET_UID(info.mounted_uid, server->m.mounted_uid);
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info.connection = server->connection;
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info.buffer_size = server->buffer_size;
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info.volume_number = NCP_FINFO(inode)->volNumber;
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info.directory_id = NCP_FINFO(inode)->DosDirNum;
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if (copy_to_user(arg, &info, sizeof(info)))
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return -EFAULT;
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return 0;
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}
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static int
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ncp_get_fs_info_v2(struct ncp_server * server, struct file *file,
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struct ncp_fs_info_v2 __user * arg)
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{
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struct inode *inode = file->f_path.dentry->d_inode;
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struct ncp_fs_info_v2 info2;
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if ((file_permission(file, MAY_WRITE) != 0)
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&& (current->uid != server->m.mounted_uid)) {
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return -EACCES;
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}
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if (copy_from_user(&info2, arg, sizeof(info2)))
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return -EFAULT;
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if (info2.version != NCP_GET_FS_INFO_VERSION_V2) {
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DPRINTK("info.version invalid: %d\n", info2.version);
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return -EINVAL;
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}
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info2.mounted_uid = server->m.mounted_uid;
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info2.connection = server->connection;
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info2.buffer_size = server->buffer_size;
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info2.volume_number = NCP_FINFO(inode)->volNumber;
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info2.directory_id = NCP_FINFO(inode)->DosDirNum;
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info2.dummy1 = info2.dummy2 = info2.dummy3 = 0;
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| 90 |
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if (copy_to_user(arg, &info2, sizeof(info2)))
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return -EFAULT;
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return 0;
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}
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#ifdef CONFIG_COMPAT
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struct compat_ncp_objectname_ioctl
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{
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s32 auth_type;
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u32 object_name_len;
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compat_caddr_t object_name; /* an userspace data, in most cases user name */
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};
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struct compat_ncp_fs_info_v2 {
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s32 version;
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u32 mounted_uid;
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u32 connection;
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u32 buffer_size;
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| 109 |
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u32 volume_number;
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u32 directory_id;
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u32 dummy1;
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u32 dummy2;
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u32 dummy3;
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};
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struct compat_ncp_ioctl_request {
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u32 function;
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u32 size;
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compat_caddr_t data;
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};
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struct compat_ncp_privatedata_ioctl
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{
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u32 len;
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| 126 |
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compat_caddr_t data; /* ~1000 for NDS */
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};
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| 129 |
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#define NCP_IOC_GET_FS_INFO_V2_32 _IOWR('n', 4, struct compat_ncp_fs_info_v2)
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#define NCP_IOC_NCPREQUEST_32 _IOR('n', 1, struct compat_ncp_ioctl_request)
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#define NCP_IOC_GETOBJECTNAME_32 _IOWR('n', 9, struct compat_ncp_objectname_ioctl)
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#define NCP_IOC_SETOBJECTNAME_32 _IOR('n', 9, struct compat_ncp_objectname_ioctl)
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#define NCP_IOC_GETPRIVATEDATA_32 _IOWR('n', 10, struct compat_ncp_privatedata_ioctl)
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#define NCP_IOC_SETPRIVATEDATA_32 _IOR('n', 10, struct compat_ncp_privatedata_ioctl)
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| 136 |
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static int
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ncp_get_compat_fs_info_v2(struct ncp_server * server, struct file *file,
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struct compat_ncp_fs_info_v2 __user * arg)
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| 139 |
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{
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| 140 |
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struct inode *inode = file->f_path.dentry->d_inode;
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| 141 |
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struct compat_ncp_fs_info_v2 info2;
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| 142 |
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| 143 |
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if ((file_permission(file, MAY_WRITE) != 0)
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| 144 |
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&& (current->uid != server->m.mounted_uid)) {
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return -EACCES;
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| 146 |
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}
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| 147 |
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if (copy_from_user(&info2, arg, sizeof(info2)))
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| 148 |
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return -EFAULT;
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| 149 |
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| 150 |
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if (info2.version != NCP_GET_FS_INFO_VERSION_V2) {
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DPRINTK("info.version invalid: %d\n", info2.version);
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return -EINVAL;
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| 153 |
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}
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| 154 |
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info2.mounted_uid = server->m.mounted_uid;
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info2.connection = server->connection;
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info2.buffer_size = server->buffer_size;
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info2.volume_number = NCP_FINFO(inode)->volNumber;
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info2.directory_id = NCP_FINFO(inode)->DosDirNum;
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info2.dummy1 = info2.dummy2 = info2.dummy3 = 0;
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| 160 |
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| 161 |
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if (copy_to_user(arg, &info2, sizeof(info2)))
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| 162 |
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return -EFAULT;
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return 0;
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| 164 |
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}
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#endif
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| 167 |
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#define NCP_IOC_GETMOUNTUID16 _IOW('n', 2, u16)
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| 168 |
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#define NCP_IOC_GETMOUNTUID32 _IOW('n', 2, u32)
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| 169 |
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#define NCP_IOC_GETMOUNTUID64 _IOW('n', 2, u64)
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| 170 |
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| 171 |
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#ifdef CONFIG_NCPFS_NLS
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/* Here we are select the iocharset and the codepage for NLS.
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| 173 |
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* Thanks Petr Vandrovec for idea and many hints.
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| 174 |
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*/
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| 175 |
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static int
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| 176 |
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ncp_set_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg)
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| 177 |
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{
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| 178 |
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struct ncp_nls_ioctl user;
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| 179 |
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struct nls_table *codepage;
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| 180 |
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struct nls_table *iocharset;
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| 181 |
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struct nls_table *oldset_io;
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| 182 |
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struct nls_table *oldset_cp;
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| 183 |
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| 184 |
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if (!capable(CAP_SYS_ADMIN))
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| 185 |
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return -EACCES;
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| 186 |
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if (server->root_setuped)
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| 187 |
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return -EBUSY;
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| 188 |
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| 189 |
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if (copy_from_user(&user, arg, sizeof(user)))
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| 190 |
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return -EFAULT;
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| 191 |
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| 192 |
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codepage = NULL;
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| 193 |
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user.codepage[NCP_IOCSNAME_LEN] = 0;
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| 194 |
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if (!user.codepage[0] || !strcmp(user.codepage, "default"))
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| 195 |
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codepage = load_nls_default();
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| 196 |
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else {
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| 197 |
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codepage = load_nls(user.codepage);
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| 198 |
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if (!codepage) {
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| 199 |
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return -EBADRQC;
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| 200 |
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}
|
| 201 |
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}
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| 202 |
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|
| 203 |
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iocharset = NULL;
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| 204 |
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user.iocharset[NCP_IOCSNAME_LEN] = 0;
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| 205 |
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if (!user.iocharset[0] || !strcmp(user.iocharset, "default")) {
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| 206 |
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iocharset = load_nls_default();
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| 207 |
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NCP_CLR_FLAG(server, NCP_FLAG_UTF8);
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| 208 |
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} else if (!strcmp(user.iocharset, "utf8")) {
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| 209 |
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iocharset = load_nls_default();
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| 210 |
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NCP_SET_FLAG(server, NCP_FLAG_UTF8);
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| 211 |
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} else {
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| 212 |
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iocharset = load_nls(user.iocharset);
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| 213 |
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if (!iocharset) {
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| 214 |
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unload_nls(codepage);
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| 215 |
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return -EBADRQC;
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| 216 |
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}
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| 217 |
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NCP_CLR_FLAG(server, NCP_FLAG_UTF8);
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| 218 |
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}
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| 219 |
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| 220 |
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oldset_cp = server->nls_vol;
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| 221 |
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server->nls_vol = codepage;
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| 222 |
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oldset_io = server->nls_io;
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| 223 |
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server->nls_io = iocharset;
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| 224 |
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|
| 225 |
|
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if (oldset_cp)
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| 226 |
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unload_nls(oldset_cp);
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| 227 |
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if (oldset_io)
|
| 228 |
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unload_nls(oldset_io);
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| 229 |
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| 230 |
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return 0;
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| 231 |
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}
|
| 232 |
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|
| 233 |
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static int
|
| 234 |
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ncp_get_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg)
|
| 235 |
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{
|
| 236 |
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struct ncp_nls_ioctl user;
|
| 237 |
|
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int len;
|
| 238 |
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|
| 239 |
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memset(&user, 0, sizeof(user));
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| 240 |
|
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if (server->nls_vol && server->nls_vol->charset) {
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| 241 |
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len = strlen(server->nls_vol->charset);
|
| 242 |
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if (len > NCP_IOCSNAME_LEN)
|
| 243 |
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len = NCP_IOCSNAME_LEN;
|
| 244 |
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strncpy(user.codepage, server->nls_vol->charset, len);
|
| 245 |
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user.codepage[len] = 0;
|
| 246 |
|
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}
|
| 247 |
|
|
|
| 248 |
|
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if (NCP_IS_FLAG(server, NCP_FLAG_UTF8))
|
| 249 |
|
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strcpy(user.iocharset, "utf8");
|
| 250 |
|
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else if (server->nls_io && server->nls_io->charset) {
|
| 251 |
|
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len = strlen(server->nls_io->charset);
|
| 252 |
|
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if (len > NCP_IOCSNAME_LEN)
|
| 253 |
|
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len = NCP_IOCSNAME_LEN;
|
| 254 |
|
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strncpy(user.iocharset, server->nls_io->charset, len);
|
| 255 |
|
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user.iocharset[len] = 0;
|
| 256 |
|
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}
|
| 257 |
|
|
|
| 258 |
|
|
if (copy_to_user(arg, &user, sizeof(user)))
|
| 259 |
|
|
return -EFAULT;
|
| 260 |
|
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return 0;
|
| 261 |
|
|
}
|
| 262 |
|
|
#endif /* CONFIG_NCPFS_NLS */
|
| 263 |
|
|
|
| 264 |
|
|
int ncp_ioctl(struct inode *inode, struct file *filp,
|
| 265 |
|
|
unsigned int cmd, unsigned long arg)
|
| 266 |
|
|
{
|
| 267 |
|
|
struct ncp_server *server = NCP_SERVER(inode);
|
| 268 |
|
|
int result;
|
| 269 |
|
|
struct ncp_ioctl_request request;
|
| 270 |
|
|
char* bouncebuffer;
|
| 271 |
|
|
void __user *argp = (void __user *)arg;
|
| 272 |
|
|
|
| 273 |
|
|
switch (cmd) {
|
| 274 |
|
|
#ifdef CONFIG_COMPAT
|
| 275 |
|
|
case NCP_IOC_NCPREQUEST_32:
|
| 276 |
|
|
#endif
|
| 277 |
|
|
case NCP_IOC_NCPREQUEST:
|
| 278 |
|
|
if ((file_permission(filp, MAY_WRITE) != 0)
|
| 279 |
|
|
&& (current->uid != server->m.mounted_uid)) {
|
| 280 |
|
|
return -EACCES;
|
| 281 |
|
|
}
|
| 282 |
|
|
#ifdef CONFIG_COMPAT
|
| 283 |
|
|
if (cmd == NCP_IOC_NCPREQUEST_32) {
|
| 284 |
|
|
struct compat_ncp_ioctl_request request32;
|
| 285 |
|
|
if (copy_from_user(&request32, argp, sizeof(request32)))
|
| 286 |
|
|
return -EFAULT;
|
| 287 |
|
|
request.function = request32.function;
|
| 288 |
|
|
request.size = request32.size;
|
| 289 |
|
|
request.data = compat_ptr(request32.data);
|
| 290 |
|
|
} else
|
| 291 |
|
|
#endif
|
| 292 |
|
|
if (copy_from_user(&request, argp, sizeof(request)))
|
| 293 |
|
|
return -EFAULT;
|
| 294 |
|
|
|
| 295 |
|
|
if ((request.function > 255)
|
| 296 |
|
|
|| (request.size >
|
| 297 |
|
|
NCP_PACKET_SIZE - sizeof(struct ncp_request_header))) {
|
| 298 |
|
|
return -EINVAL;
|
| 299 |
|
|
}
|
| 300 |
|
|
bouncebuffer = vmalloc(NCP_PACKET_SIZE_INTERNAL);
|
| 301 |
|
|
if (!bouncebuffer)
|
| 302 |
|
|
return -ENOMEM;
|
| 303 |
|
|
if (copy_from_user(bouncebuffer, request.data, request.size)) {
|
| 304 |
|
|
vfree(bouncebuffer);
|
| 305 |
|
|
return -EFAULT;
|
| 306 |
|
|
}
|
| 307 |
|
|
ncp_lock_server(server);
|
| 308 |
|
|
|
| 309 |
|
|
/* FIXME: We hack around in the server's structures
|
| 310 |
|
|
here to be able to use ncp_request */
|
| 311 |
|
|
|
| 312 |
|
|
server->has_subfunction = 0;
|
| 313 |
|
|
server->current_size = request.size;
|
| 314 |
|
|
memcpy(server->packet, bouncebuffer, request.size);
|
| 315 |
|
|
|
| 316 |
|
|
result = ncp_request2(server, request.function,
|
| 317 |
|
|
bouncebuffer, NCP_PACKET_SIZE_INTERNAL);
|
| 318 |
|
|
if (result < 0)
|
| 319 |
|
|
result = -EIO;
|
| 320 |
|
|
else
|
| 321 |
|
|
result = server->reply_size;
|
| 322 |
|
|
ncp_unlock_server(server);
|
| 323 |
|
|
DPRINTK("ncp_ioctl: copy %d bytes\n",
|
| 324 |
|
|
result);
|
| 325 |
|
|
if (result >= 0)
|
| 326 |
|
|
if (copy_to_user(request.data, bouncebuffer, result))
|
| 327 |
|
|
result = -EFAULT;
|
| 328 |
|
|
vfree(bouncebuffer);
|
| 329 |
|
|
return result;
|
| 330 |
|
|
|
| 331 |
|
|
case NCP_IOC_CONN_LOGGED_IN:
|
| 332 |
|
|
|
| 333 |
|
|
if (!capable(CAP_SYS_ADMIN))
|
| 334 |
|
|
return -EACCES;
|
| 335 |
|
|
if (!(server->m.int_flags & NCP_IMOUNT_LOGGEDIN_POSSIBLE))
|
| 336 |
|
|
return -EINVAL;
|
| 337 |
|
|
if (server->root_setuped)
|
| 338 |
|
|
return -EBUSY;
|
| 339 |
|
|
server->root_setuped = 1;
|
| 340 |
|
|
return ncp_conn_logged_in(inode->i_sb);
|
| 341 |
|
|
|
| 342 |
|
|
case NCP_IOC_GET_FS_INFO:
|
| 343 |
|
|
return ncp_get_fs_info(server, filp, argp);
|
| 344 |
|
|
|
| 345 |
|
|
case NCP_IOC_GET_FS_INFO_V2:
|
| 346 |
|
|
return ncp_get_fs_info_v2(server, filp, argp);
|
| 347 |
|
|
|
| 348 |
|
|
#ifdef CONFIG_COMPAT
|
| 349 |
|
|
case NCP_IOC_GET_FS_INFO_V2_32:
|
| 350 |
|
|
return ncp_get_compat_fs_info_v2(server, filp, argp);
|
| 351 |
|
|
#endif
|
| 352 |
|
|
/* we have too many combinations of CONFIG_COMPAT,
|
| 353 |
|
|
* CONFIG_64BIT and CONFIG_UID16, so just handle
|
| 354 |
|
|
* any of the possible ioctls */
|
| 355 |
|
|
case NCP_IOC_GETMOUNTUID16:
|
| 356 |
|
|
case NCP_IOC_GETMOUNTUID32:
|
| 357 |
|
|
case NCP_IOC_GETMOUNTUID64:
|
| 358 |
|
|
if ((file_permission(filp, MAY_READ) != 0)
|
| 359 |
|
|
&& (current->uid != server->m.mounted_uid)) {
|
| 360 |
|
|
return -EACCES;
|
| 361 |
|
|
}
|
| 362 |
|
|
if (cmd == NCP_IOC_GETMOUNTUID16) {
|
| 363 |
|
|
u16 uid;
|
| 364 |
|
|
SET_UID(uid, server->m.mounted_uid);
|
| 365 |
|
|
if (put_user(uid, (u16 __user *)argp))
|
| 366 |
|
|
return -EFAULT;
|
| 367 |
|
|
} else if (cmd == NCP_IOC_GETMOUNTUID32) {
|
| 368 |
|
|
if (put_user(server->m.mounted_uid,
|
| 369 |
|
|
(u32 __user *)argp))
|
| 370 |
|
|
return -EFAULT;
|
| 371 |
|
|
} else {
|
| 372 |
|
|
if (put_user(server->m.mounted_uid,
|
| 373 |
|
|
(u64 __user *)argp))
|
| 374 |
|
|
return -EFAULT;
|
| 375 |
|
|
}
|
| 376 |
|
|
return 0;
|
| 377 |
|
|
|
| 378 |
|
|
case NCP_IOC_GETROOT:
|
| 379 |
|
|
{
|
| 380 |
|
|
struct ncp_setroot_ioctl sr;
|
| 381 |
|
|
|
| 382 |
|
|
if ((file_permission(filp, MAY_READ) != 0)
|
| 383 |
|
|
&& (current->uid != server->m.mounted_uid))
|
| 384 |
|
|
{
|
| 385 |
|
|
return -EACCES;
|
| 386 |
|
|
}
|
| 387 |
|
|
if (server->m.mounted_vol[0]) {
|
| 388 |
|
|
struct dentry* dentry = inode->i_sb->s_root;
|
| 389 |
|
|
|
| 390 |
|
|
if (dentry) {
|
| 391 |
|
|
struct inode* inode = dentry->d_inode;
|
| 392 |
|
|
|
| 393 |
|
|
if (inode) {
|
| 394 |
|
|
sr.volNumber = NCP_FINFO(inode)->volNumber;
|
| 395 |
|
|
sr.dirEntNum = NCP_FINFO(inode)->dirEntNum;
|
| 396 |
|
|
sr.namespace = server->name_space[sr.volNumber];
|
| 397 |
|
|
} else
|
| 398 |
|
|
DPRINTK("ncpfs: s_root->d_inode==NULL\n");
|
| 399 |
|
|
} else
|
| 400 |
|
|
DPRINTK("ncpfs: s_root==NULL\n");
|
| 401 |
|
|
} else {
|
| 402 |
|
|
sr.volNumber = -1;
|
| 403 |
|
|
sr.namespace = 0;
|
| 404 |
|
|
sr.dirEntNum = 0;
|
| 405 |
|
|
}
|
| 406 |
|
|
if (copy_to_user(argp, &sr, sizeof(sr)))
|
| 407 |
|
|
return -EFAULT;
|
| 408 |
|
|
return 0;
|
| 409 |
|
|
}
|
| 410 |
|
|
case NCP_IOC_SETROOT:
|
| 411 |
|
|
{
|
| 412 |
|
|
struct ncp_setroot_ioctl sr;
|
| 413 |
|
|
__u32 vnum;
|
| 414 |
|
|
__le32 de;
|
| 415 |
|
|
__le32 dosde;
|
| 416 |
|
|
struct dentry* dentry;
|
| 417 |
|
|
|
| 418 |
|
|
if (!capable(CAP_SYS_ADMIN))
|
| 419 |
|
|
{
|
| 420 |
|
|
return -EACCES;
|
| 421 |
|
|
}
|
| 422 |
|
|
if (server->root_setuped) return -EBUSY;
|
| 423 |
|
|
if (copy_from_user(&sr, argp, sizeof(sr)))
|
| 424 |
|
|
return -EFAULT;
|
| 425 |
|
|
if (sr.volNumber < 0) {
|
| 426 |
|
|
server->m.mounted_vol[0] = 0;
|
| 427 |
|
|
vnum = NCP_NUMBER_OF_VOLUMES;
|
| 428 |
|
|
de = 0;
|
| 429 |
|
|
dosde = 0;
|
| 430 |
|
|
} else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) {
|
| 431 |
|
|
return -EINVAL;
|
| 432 |
|
|
} else if (ncp_mount_subdir(server, sr.volNumber,
|
| 433 |
|
|
sr.namespace, sr.dirEntNum,
|
| 434 |
|
|
&vnum, &de, &dosde)) {
|
| 435 |
|
|
return -ENOENT;
|
| 436 |
|
|
}
|
| 437 |
|
|
|
| 438 |
|
|
dentry = inode->i_sb->s_root;
|
| 439 |
|
|
server->root_setuped = 1;
|
| 440 |
|
|
if (dentry) {
|
| 441 |
|
|
struct inode* inode = dentry->d_inode;
|
| 442 |
|
|
|
| 443 |
|
|
if (inode) {
|
| 444 |
|
|
NCP_FINFO(inode)->volNumber = vnum;
|
| 445 |
|
|
NCP_FINFO(inode)->dirEntNum = de;
|
| 446 |
|
|
NCP_FINFO(inode)->DosDirNum = dosde;
|
| 447 |
|
|
} else
|
| 448 |
|
|
DPRINTK("ncpfs: s_root->d_inode==NULL\n");
|
| 449 |
|
|
} else
|
| 450 |
|
|
DPRINTK("ncpfs: s_root==NULL\n");
|
| 451 |
|
|
|
| 452 |
|
|
return 0;
|
| 453 |
|
|
}
|
| 454 |
|
|
|
| 455 |
|
|
#ifdef CONFIG_NCPFS_PACKET_SIGNING
|
| 456 |
|
|
case NCP_IOC_SIGN_INIT:
|
| 457 |
|
|
if ((file_permission(filp, MAY_WRITE) != 0)
|
| 458 |
|
|
&& (current->uid != server->m.mounted_uid))
|
| 459 |
|
|
{
|
| 460 |
|
|
return -EACCES;
|
| 461 |
|
|
}
|
| 462 |
|
|
if (argp) {
|
| 463 |
|
|
if (server->sign_wanted)
|
| 464 |
|
|
{
|
| 465 |
|
|
struct ncp_sign_init sign;
|
| 466 |
|
|
|
| 467 |
|
|
if (copy_from_user(&sign, argp, sizeof(sign)))
|
| 468 |
|
|
return -EFAULT;
|
| 469 |
|
|
memcpy(server->sign_root,sign.sign_root,8);
|
| 470 |
|
|
memcpy(server->sign_last,sign.sign_last,16);
|
| 471 |
|
|
server->sign_active = 1;
|
| 472 |
|
|
}
|
| 473 |
|
|
/* ignore when signatures not wanted */
|
| 474 |
|
|
} else {
|
| 475 |
|
|
server->sign_active = 0;
|
| 476 |
|
|
}
|
| 477 |
|
|
return 0;
|
| 478 |
|
|
|
| 479 |
|
|
case NCP_IOC_SIGN_WANTED:
|
| 480 |
|
|
if ((file_permission(filp, MAY_READ) != 0)
|
| 481 |
|
|
&& (current->uid != server->m.mounted_uid))
|
| 482 |
|
|
{
|
| 483 |
|
|
return -EACCES;
|
| 484 |
|
|
}
|
| 485 |
|
|
|
| 486 |
|
|
if (put_user(server->sign_wanted, (int __user *)argp))
|
| 487 |
|
|
return -EFAULT;
|
| 488 |
|
|
return 0;
|
| 489 |
|
|
case NCP_IOC_SET_SIGN_WANTED:
|
| 490 |
|
|
{
|
| 491 |
|
|
int newstate;
|
| 492 |
|
|
|
| 493 |
|
|
if ((file_permission(filp, MAY_WRITE) != 0)
|
| 494 |
|
|
&& (current->uid != server->m.mounted_uid))
|
| 495 |
|
|
{
|
| 496 |
|
|
return -EACCES;
|
| 497 |
|
|
}
|
| 498 |
|
|
/* get only low 8 bits... */
|
| 499 |
|
|
if (get_user(newstate, (unsigned char __user *)argp))
|
| 500 |
|
|
return -EFAULT;
|
| 501 |
|
|
if (server->sign_active) {
|
| 502 |
|
|
/* cannot turn signatures OFF when active */
|
| 503 |
|
|
if (!newstate) return -EINVAL;
|
| 504 |
|
|
} else {
|
| 505 |
|
|
server->sign_wanted = newstate != 0;
|
| 506 |
|
|
}
|
| 507 |
|
|
return 0;
|
| 508 |
|
|
}
|
| 509 |
|
|
|
| 510 |
|
|
#endif /* CONFIG_NCPFS_PACKET_SIGNING */
|
| 511 |
|
|
|
| 512 |
|
|
#ifdef CONFIG_NCPFS_IOCTL_LOCKING
|
| 513 |
|
|
case NCP_IOC_LOCKUNLOCK:
|
| 514 |
|
|
if ((file_permission(filp, MAY_WRITE) != 0)
|
| 515 |
|
|
&& (current->uid != server->m.mounted_uid))
|
| 516 |
|
|
{
|
| 517 |
|
|
return -EACCES;
|
| 518 |
|
|
}
|
| 519 |
|
|
{
|
| 520 |
|
|
struct ncp_lock_ioctl rqdata;
|
| 521 |
|
|
int result;
|
| 522 |
|
|
|
| 523 |
|
|
if (copy_from_user(&rqdata, argp, sizeof(rqdata)))
|
| 524 |
|
|
return -EFAULT;
|
| 525 |
|
|
if (rqdata.origin != 0)
|
| 526 |
|
|
return -EINVAL;
|
| 527 |
|
|
/* check for cmd */
|
| 528 |
|
|
switch (rqdata.cmd) {
|
| 529 |
|
|
case NCP_LOCK_EX:
|
| 530 |
|
|
case NCP_LOCK_SH:
|
| 531 |
|
|
if (rqdata.timeout == 0)
|
| 532 |
|
|
rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT;
|
| 533 |
|
|
else if (rqdata.timeout > NCP_LOCK_MAX_TIMEOUT)
|
| 534 |
|
|
rqdata.timeout = NCP_LOCK_MAX_TIMEOUT;
|
| 535 |
|
|
break;
|
| 536 |
|
|
case NCP_LOCK_LOG:
|
| 537 |
|
|
rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT; /* has no effect */
|
| 538 |
|
|
case NCP_LOCK_CLEAR:
|
| 539 |
|
|
break;
|
| 540 |
|
|
default:
|
| 541 |
|
|
return -EINVAL;
|
| 542 |
|
|
}
|
| 543 |
|
|
/* locking needs both read and write access */
|
| 544 |
|
|
if ((result = ncp_make_open(inode, O_RDWR)) != 0)
|
| 545 |
|
|
{
|
| 546 |
|
|
return result;
|
| 547 |
|
|
}
|
| 548 |
|
|
result = -EIO;
|
| 549 |
|
|
if (!ncp_conn_valid(server))
|
| 550 |
|
|
goto outrel;
|
| 551 |
|
|
result = -EISDIR;
|
| 552 |
|
|
if (!S_ISREG(inode->i_mode))
|
| 553 |
|
|
goto outrel;
|
| 554 |
|
|
if (rqdata.cmd == NCP_LOCK_CLEAR)
|
| 555 |
|
|
{
|
| 556 |
|
|
result = ncp_ClearPhysicalRecord(NCP_SERVER(inode),
|
| 557 |
|
|
NCP_FINFO(inode)->file_handle,
|
| 558 |
|
|
rqdata.offset,
|
| 559 |
|
|
rqdata.length);
|
| 560 |
|
|
if (result > 0) result = 0; /* no such lock */
|
| 561 |
|
|
}
|
| 562 |
|
|
else
|
| 563 |
|
|
{
|
| 564 |
|
|
int lockcmd;
|
| 565 |
|
|
|
| 566 |
|
|
switch (rqdata.cmd)
|
| 567 |
|
|
{
|
| 568 |
|
|
case NCP_LOCK_EX: lockcmd=1; break;
|
| 569 |
|
|
case NCP_LOCK_SH: lockcmd=3; break;
|
| 570 |
|
|
default: lockcmd=0; break;
|
| 571 |
|
|
}
|
| 572 |
|
|
result = ncp_LogPhysicalRecord(NCP_SERVER(inode),
|
| 573 |
|
|
NCP_FINFO(inode)->file_handle,
|
| 574 |
|
|
lockcmd,
|
| 575 |
|
|
rqdata.offset,
|
| 576 |
|
|
rqdata.length,
|
| 577 |
|
|
rqdata.timeout);
|
| 578 |
|
|
if (result > 0) result = -EAGAIN;
|
| 579 |
|
|
}
|
| 580 |
|
|
outrel:
|
| 581 |
|
|
ncp_inode_close(inode);
|
| 582 |
|
|
return result;
|
| 583 |
|
|
}
|
| 584 |
|
|
#endif /* CONFIG_NCPFS_IOCTL_LOCKING */
|
| 585 |
|
|
|
| 586 |
|
|
#ifdef CONFIG_COMPAT
|
| 587 |
|
|
case NCP_IOC_GETOBJECTNAME_32:
|
| 588 |
|
|
if (current->uid != server->m.mounted_uid) {
|
| 589 |
|
|
return -EACCES;
|
| 590 |
|
|
}
|
| 591 |
|
|
{
|
| 592 |
|
|
struct compat_ncp_objectname_ioctl user;
|
| 593 |
|
|
size_t outl;
|
| 594 |
|
|
|
| 595 |
|
|
if (copy_from_user(&user, argp, sizeof(user)))
|
| 596 |
|
|
return -EFAULT;
|
| 597 |
|
|
user.auth_type = server->auth.auth_type;
|
| 598 |
|
|
outl = user.object_name_len;
|
| 599 |
|
|
user.object_name_len = server->auth.object_name_len;
|
| 600 |
|
|
if (outl > user.object_name_len)
|
| 601 |
|
|
outl = user.object_name_len;
|
| 602 |
|
|
if (outl) {
|
| 603 |
|
|
if (copy_to_user(compat_ptr(user.object_name),
|
| 604 |
|
|
server->auth.object_name,
|
| 605 |
|
|
outl)) return -EFAULT;
|
| 606 |
|
|
}
|
| 607 |
|
|
if (copy_to_user(argp, &user, sizeof(user)))
|
| 608 |
|
|
return -EFAULT;
|
| 609 |
|
|
return 0;
|
| 610 |
|
|
}
|
| 611 |
|
|
#endif
|
| 612 |
|
|
case NCP_IOC_GETOBJECTNAME:
|
| 613 |
|
|
if (current->uid != server->m.mounted_uid) {
|
| 614 |
|
|
return -EACCES;
|
| 615 |
|
|
}
|
| 616 |
|
|
{
|
| 617 |
|
|
struct ncp_objectname_ioctl user;
|
| 618 |
|
|
size_t outl;
|
| 619 |
|
|
|
| 620 |
|
|
if (copy_from_user(&user, argp, sizeof(user)))
|
| 621 |
|
|
return -EFAULT;
|
| 622 |
|
|
user.auth_type = server->auth.auth_type;
|
| 623 |
|
|
outl = user.object_name_len;
|
| 624 |
|
|
user.object_name_len = server->auth.object_name_len;
|
| 625 |
|
|
if (outl > user.object_name_len)
|
| 626 |
|
|
outl = user.object_name_len;
|
| 627 |
|
|
if (outl) {
|
| 628 |
|
|
if (copy_to_user(user.object_name,
|
| 629 |
|
|
server->auth.object_name,
|
| 630 |
|
|
outl)) return -EFAULT;
|
| 631 |
|
|
}
|
| 632 |
|
|
if (copy_to_user(argp, &user, sizeof(user)))
|
| 633 |
|
|
return -EFAULT;
|
| 634 |
|
|
return 0;
|
| 635 |
|
|
}
|
| 636 |
|
|
#ifdef CONFIG_COMPAT
|
| 637 |
|
|
case NCP_IOC_SETOBJECTNAME_32:
|
| 638 |
|
|
#endif
|
| 639 |
|
|
case NCP_IOC_SETOBJECTNAME:
|
| 640 |
|
|
if (current->uid != server->m.mounted_uid) {
|
| 641 |
|
|
return -EACCES;
|
| 642 |
|
|
}
|
| 643 |
|
|
{
|
| 644 |
|
|
struct ncp_objectname_ioctl user;
|
| 645 |
|
|
void* newname;
|
| 646 |
|
|
void* oldname;
|
| 647 |
|
|
size_t oldnamelen;
|
| 648 |
|
|
void* oldprivate;
|
| 649 |
|
|
size_t oldprivatelen;
|
| 650 |
|
|
|
| 651 |
|
|
#ifdef CONFIG_COMPAT
|
| 652 |
|
|
if (cmd == NCP_IOC_SETOBJECTNAME_32) {
|
| 653 |
|
|
struct compat_ncp_objectname_ioctl user32;
|
| 654 |
|
|
if (copy_from_user(&user32, argp, sizeof(user32)))
|
| 655 |
|
|
return -EFAULT;
|
| 656 |
|
|
user.auth_type = user32.auth_type;
|
| 657 |
|
|
user.object_name_len = user32.object_name_len;
|
| 658 |
|
|
user.object_name = compat_ptr(user32.object_name);
|
| 659 |
|
|
} else
|
| 660 |
|
|
#endif
|
| 661 |
|
|
if (copy_from_user(&user, argp, sizeof(user)))
|
| 662 |
|
|
return -EFAULT;
|
| 663 |
|
|
|
| 664 |
|
|
if (user.object_name_len > NCP_OBJECT_NAME_MAX_LEN)
|
| 665 |
|
|
return -ENOMEM;
|
| 666 |
|
|
if (user.object_name_len) {
|
| 667 |
|
|
newname = kmalloc(user.object_name_len, GFP_USER);
|
| 668 |
|
|
if (!newname)
|
| 669 |
|
|
return -ENOMEM;
|
| 670 |
|
|
if (copy_from_user(newname, user.object_name, user.object_name_len)) {
|
| 671 |
|
|
kfree(newname);
|
| 672 |
|
|
return -EFAULT;
|
| 673 |
|
|
}
|
| 674 |
|
|
} else {
|
| 675 |
|
|
newname = NULL;
|
| 676 |
|
|
}
|
| 677 |
|
|
/* enter critical section */
|
| 678 |
|
|
/* maybe that kfree can sleep so do that this way */
|
| 679 |
|
|
/* it is at least more SMP friendly (in future...) */
|
| 680 |
|
|
oldname = server->auth.object_name;
|
| 681 |
|
|
oldnamelen = server->auth.object_name_len;
|
| 682 |
|
|
oldprivate = server->priv.data;
|
| 683 |
|
|
oldprivatelen = server->priv.len;
|
| 684 |
|
|
server->auth.auth_type = user.auth_type;
|
| 685 |
|
|
server->auth.object_name_len = user.object_name_len;
|
| 686 |
|
|
server->auth.object_name = newname;
|
| 687 |
|
|
server->priv.len = 0;
|
| 688 |
|
|
server->priv.data = NULL;
|
| 689 |
|
|
/* leave critical section */
|
| 690 |
|
|
kfree(oldprivate);
|
| 691 |
|
|
kfree(oldname);
|
| 692 |
|
|
return 0;
|
| 693 |
|
|
}
|
| 694 |
|
|
#ifdef CONFIG_COMPAT
|
| 695 |
|
|
case NCP_IOC_GETPRIVATEDATA_32:
|
| 696 |
|
|
#endif
|
| 697 |
|
|
case NCP_IOC_GETPRIVATEDATA:
|
| 698 |
|
|
if (current->uid != server->m.mounted_uid) {
|
| 699 |
|
|
return -EACCES;
|
| 700 |
|
|
}
|
| 701 |
|
|
{
|
| 702 |
|
|
struct ncp_privatedata_ioctl user;
|
| 703 |
|
|
size_t outl;
|
| 704 |
|
|
|
| 705 |
|
|
#ifdef CONFIG_COMPAT
|
| 706 |
|
|
if (cmd == NCP_IOC_GETPRIVATEDATA_32) {
|
| 707 |
|
|
struct compat_ncp_privatedata_ioctl user32;
|
| 708 |
|
|
if (copy_from_user(&user32, argp, sizeof(user32)))
|
| 709 |
|
|
return -EFAULT;
|
| 710 |
|
|
user.len = user32.len;
|
| 711 |
|
|
user.data = compat_ptr(user32.data);
|
| 712 |
|
|
} else
|
| 713 |
|
|
#endif
|
| 714 |
|
|
if (copy_from_user(&user, argp, sizeof(user)))
|
| 715 |
|
|
return -EFAULT;
|
| 716 |
|
|
|
| 717 |
|
|
outl = user.len;
|
| 718 |
|
|
user.len = server->priv.len;
|
| 719 |
|
|
if (outl > user.len) outl = user.len;
|
| 720 |
|
|
if (outl) {
|
| 721 |
|
|
if (copy_to_user(user.data,
|
| 722 |
|
|
server->priv.data,
|
| 723 |
|
|
outl)) return -EFAULT;
|
| 724 |
|
|
}
|
| 725 |
|
|
#ifdef CONFIG_COMPAT
|
| 726 |
|
|
if (cmd == NCP_IOC_GETPRIVATEDATA_32) {
|
| 727 |
|
|
struct compat_ncp_privatedata_ioctl user32;
|
| 728 |
|
|
user32.len = user.len;
|
| 729 |
|
|
user32.data = (unsigned long) user.data;
|
| 730 |
|
|
if (copy_to_user(argp, &user32, sizeof(user32)))
|
| 731 |
|
|
return -EFAULT;
|
| 732 |
|
|
} else
|
| 733 |
|
|
#endif
|
| 734 |
|
|
if (copy_to_user(argp, &user, sizeof(user)))
|
| 735 |
|
|
return -EFAULT;
|
| 736 |
|
|
|
| 737 |
|
|
return 0;
|
| 738 |
|
|
}
|
| 739 |
|
|
#ifdef CONFIG_COMPAT
|
| 740 |
|
|
case NCP_IOC_SETPRIVATEDATA_32:
|
| 741 |
|
|
#endif
|
| 742 |
|
|
case NCP_IOC_SETPRIVATEDATA:
|
| 743 |
|
|
if (current->uid != server->m.mounted_uid) {
|
| 744 |
|
|
return -EACCES;
|
| 745 |
|
|
}
|
| 746 |
|
|
{
|
| 747 |
|
|
struct ncp_privatedata_ioctl user;
|
| 748 |
|
|
void* new;
|
| 749 |
|
|
void* old;
|
| 750 |
|
|
size_t oldlen;
|
| 751 |
|
|
|
| 752 |
|
|
#ifdef CONFIG_COMPAT
|
| 753 |
|
|
if (cmd == NCP_IOC_SETPRIVATEDATA_32) {
|
| 754 |
|
|
struct compat_ncp_privatedata_ioctl user32;
|
| 755 |
|
|
if (copy_from_user(&user32, argp, sizeof(user32)))
|
| 756 |
|
|
return -EFAULT;
|
| 757 |
|
|
user.len = user32.len;
|
| 758 |
|
|
user.data = compat_ptr(user32.data);
|
| 759 |
|
|
} else
|
| 760 |
|
|
#endif
|
| 761 |
|
|
if (copy_from_user(&user, argp, sizeof(user)))
|
| 762 |
|
|
return -EFAULT;
|
| 763 |
|
|
|
| 764 |
|
|
if (user.len > NCP_PRIVATE_DATA_MAX_LEN)
|
| 765 |
|
|
return -ENOMEM;
|
| 766 |
|
|
if (user.len) {
|
| 767 |
|
|
new = kmalloc(user.len, GFP_USER);
|
| 768 |
|
|
if (!new)
|
| 769 |
|
|
return -ENOMEM;
|
| 770 |
|
|
if (copy_from_user(new, user.data, user.len)) {
|
| 771 |
|
|
kfree(new);
|
| 772 |
|
|
return -EFAULT;
|
| 773 |
|
|
}
|
| 774 |
|
|
} else {
|
| 775 |
|
|
new = NULL;
|
| 776 |
|
|
}
|
| 777 |
|
|
/* enter critical section */
|
| 778 |
|
|
old = server->priv.data;
|
| 779 |
|
|
oldlen = server->priv.len;
|
| 780 |
|
|
server->priv.len = user.len;
|
| 781 |
|
|
server->priv.data = new;
|
| 782 |
|
|
/* leave critical section */
|
| 783 |
|
|
kfree(old);
|
| 784 |
|
|
return 0;
|
| 785 |
|
|
}
|
| 786 |
|
|
|
| 787 |
|
|
#ifdef CONFIG_NCPFS_NLS
|
| 788 |
|
|
case NCP_IOC_SETCHARSETS:
|
| 789 |
|
|
return ncp_set_charsets(server, argp);
|
| 790 |
|
|
|
| 791 |
|
|
case NCP_IOC_GETCHARSETS:
|
| 792 |
|
|
return ncp_get_charsets(server, argp);
|
| 793 |
|
|
|
| 794 |
|
|
#endif /* CONFIG_NCPFS_NLS */
|
| 795 |
|
|
|
| 796 |
|
|
case NCP_IOC_SETDENTRYTTL:
|
| 797 |
|
|
if ((file_permission(filp, MAY_WRITE) != 0) &&
|
| 798 |
|
|
(current->uid != server->m.mounted_uid))
|
| 799 |
|
|
return -EACCES;
|
| 800 |
|
|
{
|
| 801 |
|
|
u_int32_t user;
|
| 802 |
|
|
|
| 803 |
|
|
if (copy_from_user(&user, argp, sizeof(user)))
|
| 804 |
|
|
return -EFAULT;
|
| 805 |
|
|
/* 20 secs at most... */
|
| 806 |
|
|
if (user > 20000)
|
| 807 |
|
|
return -EINVAL;
|
| 808 |
|
|
user = (user * HZ) / 1000;
|
| 809 |
|
|
server->dentry_ttl = user;
|
| 810 |
|
|
return 0;
|
| 811 |
|
|
}
|
| 812 |
|
|
|
| 813 |
|
|
case NCP_IOC_GETDENTRYTTL:
|
| 814 |
|
|
{
|
| 815 |
|
|
u_int32_t user = (server->dentry_ttl * 1000) / HZ;
|
| 816 |
|
|
if (copy_to_user(argp, &user, sizeof(user)))
|
| 817 |
|
|
return -EFAULT;
|
| 818 |
|
|
return 0;
|
| 819 |
|
|
}
|
| 820 |
|
|
|
| 821 |
|
|
}
|
| 822 |
|
|
return -EINVAL;
|
| 823 |
|
|
}
|
| 824 |
|
|
|
| 825 |
|
|
#ifdef CONFIG_COMPAT
|
| 826 |
|
|
long ncp_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
| 827 |
|
|
{
|
| 828 |
|
|
struct inode *inode = file->f_path.dentry->d_inode;
|
| 829 |
|
|
int ret;
|
| 830 |
|
|
|
| 831 |
|
|
lock_kernel();
|
| 832 |
|
|
arg = (unsigned long) compat_ptr(arg);
|
| 833 |
|
|
ret = ncp_ioctl(inode, file, cmd, arg);
|
| 834 |
|
|
unlock_kernel();
|
| 835 |
|
|
return ret;
|
| 836 |
|
|
}
|
| 837 |
|
|
#endif
|
