| 1 |
1275 |
phoenix |
/*
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| 2 |
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* ioctl.c
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| 3 |
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*
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| 4 |
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* Copyright (C) 1995, 1996 by Volker Lendecke
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| 5 |
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* Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
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| 6 |
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* Modified 1998, 1999 Wolfram Pienkoss for NLS
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| 7 |
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*
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| 8 |
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*/
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| 10 |
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#include <linux/config.h>
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| 11 |
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| 12 |
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#include <asm/uaccess.h>
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| 13 |
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#include <linux/errno.h>
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| 14 |
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#include <linux/fs.h>
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| 15 |
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#include <linux/ioctl.h>
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| 16 |
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#include <linux/sched.h>
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| 17 |
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#include <linux/mm.h>
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| 18 |
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#include <linux/highuid.h>
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| 19 |
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#include <linux/vmalloc.h>
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| 20 |
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| 21 |
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#include <linux/ncp_fs.h>
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| 22 |
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| 23 |
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#include "ncplib_kernel.h"
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| 24 |
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| 25 |
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/* maximum limit for ncp_objectname_ioctl */
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| 26 |
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#define NCP_OBJECT_NAME_MAX_LEN 4096
|
| 27 |
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/* maximum limit for ncp_privatedata_ioctl */
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| 28 |
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#define NCP_PRIVATE_DATA_MAX_LEN 8192
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| 29 |
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/* maximum negotiable packet size */
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| 30 |
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#define NCP_PACKET_SIZE_INTERNAL 65536
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| 31 |
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| 32 |
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int ncp_ioctl(struct inode *inode, struct file *filp,
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| 33 |
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unsigned int cmd, unsigned long arg)
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| 34 |
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{
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| 35 |
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struct ncp_server *server = NCP_SERVER(inode);
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| 36 |
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int result;
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| 37 |
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struct ncp_ioctl_request request;
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| 38 |
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char* bouncebuffer;
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| 39 |
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| 40 |
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switch (cmd) {
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| 41 |
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case NCP_IOC_NCPREQUEST:
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| 42 |
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| 43 |
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if ((permission(inode, MAY_WRITE) != 0)
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| 44 |
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&& (current->uid != server->m.mounted_uid)) {
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| 45 |
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return -EACCES;
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| 46 |
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}
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| 47 |
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if (copy_from_user(&request, (struct ncp_ioctl_request *) arg,
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| 48 |
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sizeof(request)))
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| 49 |
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return -EFAULT;
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| 50 |
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| 51 |
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if ((request.function > 255)
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| 52 |
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|| (request.size >
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| 53 |
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NCP_PACKET_SIZE - sizeof(struct ncp_request_header))) {
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| 54 |
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return -EINVAL;
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| 55 |
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}
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| 56 |
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bouncebuffer = vmalloc(NCP_PACKET_SIZE_INTERNAL);
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| 57 |
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if (!bouncebuffer)
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| 58 |
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return -ENOMEM;
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| 59 |
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if (copy_from_user(bouncebuffer, request.data, request.size)) {
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| 60 |
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vfree(bouncebuffer);
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| 61 |
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return -EFAULT;
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| 62 |
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}
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| 63 |
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ncp_lock_server(server);
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| 64 |
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| 65 |
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/* FIXME: We hack around in the server's structures
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here to be able to use ncp_request */
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| 67 |
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| 68 |
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server->has_subfunction = 0;
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| 69 |
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server->current_size = request.size;
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| 70 |
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memcpy(server->packet, bouncebuffer, request.size);
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| 71 |
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| 72 |
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result = ncp_request2(server, request.function,
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| 73 |
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bouncebuffer, NCP_PACKET_SIZE_INTERNAL);
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| 74 |
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if (result < 0)
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| 75 |
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result = -EIO;
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| 76 |
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else
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| 77 |
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result = server->reply_size;
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| 78 |
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ncp_unlock_server(server);
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| 79 |
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DPRINTK("ncp_ioctl: copy %d bytes\n",
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| 80 |
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result);
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| 81 |
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if (result >= 0)
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| 82 |
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if (copy_to_user(request.data, bouncebuffer, result))
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| 83 |
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result = -EFAULT;
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| 84 |
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vfree(bouncebuffer);
|
| 85 |
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return result;
|
| 86 |
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|
| 87 |
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case NCP_IOC_CONN_LOGGED_IN:
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| 88 |
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|
| 89 |
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if (!capable(CAP_SYS_ADMIN))
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| 90 |
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return -EACCES;
|
| 91 |
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if (!(server->m.int_flags & NCP_IMOUNT_LOGGEDIN_POSSIBLE))
|
| 92 |
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return -EINVAL;
|
| 93 |
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if (server->root_setuped)
|
| 94 |
|
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return -EBUSY;
|
| 95 |
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server->root_setuped = 1;
|
| 96 |
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return ncp_conn_logged_in(inode->i_sb);
|
| 97 |
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|
| 98 |
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case NCP_IOC_GET_FS_INFO:
|
| 99 |
|
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{
|
| 100 |
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struct ncp_fs_info info;
|
| 101 |
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|
| 102 |
|
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if ((permission(inode, MAY_WRITE) != 0)
|
| 103 |
|
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&& (current->uid != server->m.mounted_uid)) {
|
| 104 |
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return -EACCES;
|
| 105 |
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}
|
| 106 |
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if (copy_from_user(&info, (struct ncp_fs_info *) arg,
|
| 107 |
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sizeof(info)))
|
| 108 |
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return -EFAULT;
|
| 109 |
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|
| 110 |
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if (info.version != NCP_GET_FS_INFO_VERSION) {
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| 111 |
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DPRINTK("info.version invalid: %d\n", info.version);
|
| 112 |
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return -EINVAL;
|
| 113 |
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}
|
| 114 |
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/* TODO: info.addr = server->m.serv_addr; */
|
| 115 |
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info.mounted_uid = NEW_TO_OLD_UID(server->m.mounted_uid);
|
| 116 |
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info.connection = server->connection;
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| 117 |
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info.buffer_size = server->buffer_size;
|
| 118 |
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info.volume_number = NCP_FINFO(inode)->volNumber;
|
| 119 |
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info.directory_id = NCP_FINFO(inode)->DosDirNum;
|
| 120 |
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|
| 121 |
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if (copy_to_user((struct ncp_fs_info *) arg, &info,
|
| 122 |
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sizeof(info))) return -EFAULT;
|
| 123 |
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return 0;
|
| 124 |
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}
|
| 125 |
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|
| 126 |
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case NCP_IOC_GET_FS_INFO_V2:
|
| 127 |
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{
|
| 128 |
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struct ncp_fs_info_v2 info2;
|
| 129 |
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|
| 130 |
|
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if ((permission(inode, MAY_WRITE) != 0)
|
| 131 |
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&& (current->uid != server->m.mounted_uid)) {
|
| 132 |
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return -EACCES;
|
| 133 |
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}
|
| 134 |
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if (copy_from_user(&info2, (struct ncp_fs_info_v2 *) arg,
|
| 135 |
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sizeof(info2)))
|
| 136 |
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return -EFAULT;
|
| 137 |
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|
|
| 138 |
|
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if (info2.version != NCP_GET_FS_INFO_VERSION_V2) {
|
| 139 |
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DPRINTK("info.version invalid: %d\n", info2.version);
|
| 140 |
|
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return -EINVAL;
|
| 141 |
|
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}
|
| 142 |
|
|
info2.mounted_uid = server->m.mounted_uid;
|
| 143 |
|
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info2.connection = server->connection;
|
| 144 |
|
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info2.buffer_size = server->buffer_size;
|
| 145 |
|
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info2.volume_number = NCP_FINFO(inode)->volNumber;
|
| 146 |
|
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info2.directory_id = NCP_FINFO(inode)->DosDirNum;
|
| 147 |
|
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info2.dummy1 = info2.dummy2 = info2.dummy3 = 0;
|
| 148 |
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|
|
| 149 |
|
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if (copy_to_user((struct ncp_fs_info_v2 *) arg, &info2,
|
| 150 |
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sizeof(info2))) return -EFAULT;
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| 151 |
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return 0;
|
| 152 |
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}
|
| 153 |
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|
|
| 154 |
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case NCP_IOC_GETMOUNTUID2:
|
| 155 |
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{
|
| 156 |
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unsigned long tmp = server->m.mounted_uid;
|
| 157 |
|
|
|
| 158 |
|
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if ( (permission(inode, MAY_READ) != 0)
|
| 159 |
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&& (current->uid != server->m.mounted_uid))
|
| 160 |
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{
|
| 161 |
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return -EACCES;
|
| 162 |
|
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}
|
| 163 |
|
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if (put_user(tmp, (unsigned long*) arg))
|
| 164 |
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return -EFAULT;
|
| 165 |
|
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return 0;
|
| 166 |
|
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}
|
| 167 |
|
|
|
| 168 |
|
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case NCP_IOC_GETROOT:
|
| 169 |
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{
|
| 170 |
|
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struct ncp_setroot_ioctl sr;
|
| 171 |
|
|
|
| 172 |
|
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if ( (permission(inode, MAY_READ) != 0)
|
| 173 |
|
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&& (current->uid != server->m.mounted_uid))
|
| 174 |
|
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{
|
| 175 |
|
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return -EACCES;
|
| 176 |
|
|
}
|
| 177 |
|
|
if (server->m.mounted_vol[0]) {
|
| 178 |
|
|
struct dentry* dentry = inode->i_sb->s_root;
|
| 179 |
|
|
|
| 180 |
|
|
if (dentry) {
|
| 181 |
|
|
struct inode* inode = dentry->d_inode;
|
| 182 |
|
|
|
| 183 |
|
|
if (inode) {
|
| 184 |
|
|
sr.volNumber = NCP_FINFO(inode)->volNumber;
|
| 185 |
|
|
sr.dirEntNum = NCP_FINFO(inode)->dirEntNum;
|
| 186 |
|
|
sr.namespace = server->name_space[sr.volNumber];
|
| 187 |
|
|
} else
|
| 188 |
|
|
DPRINTK("ncpfs: s_root->d_inode==NULL\n");
|
| 189 |
|
|
} else
|
| 190 |
|
|
DPRINTK("ncpfs: s_root==NULL\n");
|
| 191 |
|
|
} else {
|
| 192 |
|
|
sr.volNumber = -1;
|
| 193 |
|
|
sr.namespace = 0;
|
| 194 |
|
|
sr.dirEntNum = 0;
|
| 195 |
|
|
}
|
| 196 |
|
|
if (copy_to_user((struct ncp_setroot_ioctl*)arg,
|
| 197 |
|
|
&sr,
|
| 198 |
|
|
sizeof(sr))) return -EFAULT;
|
| 199 |
|
|
return 0;
|
| 200 |
|
|
}
|
| 201 |
|
|
case NCP_IOC_SETROOT:
|
| 202 |
|
|
{
|
| 203 |
|
|
struct ncp_setroot_ioctl sr;
|
| 204 |
|
|
struct nw_info_struct i;
|
| 205 |
|
|
struct dentry* dentry;
|
| 206 |
|
|
|
| 207 |
|
|
if (!capable(CAP_SYS_ADMIN))
|
| 208 |
|
|
{
|
| 209 |
|
|
return -EACCES;
|
| 210 |
|
|
}
|
| 211 |
|
|
if (server->root_setuped) return -EBUSY;
|
| 212 |
|
|
if (copy_from_user(&sr,
|
| 213 |
|
|
(struct ncp_setroot_ioctl*)arg,
|
| 214 |
|
|
sizeof(sr))) return -EFAULT;
|
| 215 |
|
|
if (sr.volNumber < 0) {
|
| 216 |
|
|
server->m.mounted_vol[0] = 0;
|
| 217 |
|
|
i.volNumber = NCP_NUMBER_OF_VOLUMES + 1;
|
| 218 |
|
|
i.dirEntNum = 0;
|
| 219 |
|
|
i.DosDirNum = 0;
|
| 220 |
|
|
} else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) {
|
| 221 |
|
|
return -EINVAL;
|
| 222 |
|
|
} else
|
| 223 |
|
|
if (ncp_mount_subdir(server, &i, sr.volNumber,
|
| 224 |
|
|
sr.namespace, sr.dirEntNum))
|
| 225 |
|
|
return -ENOENT;
|
| 226 |
|
|
|
| 227 |
|
|
dentry = inode->i_sb->s_root;
|
| 228 |
|
|
server->root_setuped = 1;
|
| 229 |
|
|
if (dentry) {
|
| 230 |
|
|
struct inode* inode = dentry->d_inode;
|
| 231 |
|
|
|
| 232 |
|
|
if (inode) {
|
| 233 |
|
|
NCP_FINFO(inode)->volNumber = i.volNumber;
|
| 234 |
|
|
NCP_FINFO(inode)->dirEntNum = i.dirEntNum;
|
| 235 |
|
|
NCP_FINFO(inode)->DosDirNum = i.DosDirNum;
|
| 236 |
|
|
} else
|
| 237 |
|
|
DPRINTK("ncpfs: s_root->d_inode==NULL\n");
|
| 238 |
|
|
} else
|
| 239 |
|
|
DPRINTK("ncpfs: s_root==NULL\n");
|
| 240 |
|
|
|
| 241 |
|
|
return 0;
|
| 242 |
|
|
}
|
| 243 |
|
|
|
| 244 |
|
|
#ifdef CONFIG_NCPFS_PACKET_SIGNING
|
| 245 |
|
|
case NCP_IOC_SIGN_INIT:
|
| 246 |
|
|
if ((permission(inode, MAY_WRITE) != 0)
|
| 247 |
|
|
&& (current->uid != server->m.mounted_uid))
|
| 248 |
|
|
{
|
| 249 |
|
|
return -EACCES;
|
| 250 |
|
|
}
|
| 251 |
|
|
if (arg) {
|
| 252 |
|
|
if (server->sign_wanted)
|
| 253 |
|
|
{
|
| 254 |
|
|
struct ncp_sign_init sign;
|
| 255 |
|
|
|
| 256 |
|
|
if (copy_from_user(&sign, (struct ncp_sign_init *) arg,
|
| 257 |
|
|
sizeof(sign))) return -EFAULT;
|
| 258 |
|
|
memcpy(server->sign_root,sign.sign_root,8);
|
| 259 |
|
|
memcpy(server->sign_last,sign.sign_last,16);
|
| 260 |
|
|
server->sign_active = 1;
|
| 261 |
|
|
}
|
| 262 |
|
|
/* ignore when signatures not wanted */
|
| 263 |
|
|
} else {
|
| 264 |
|
|
server->sign_active = 0;
|
| 265 |
|
|
}
|
| 266 |
|
|
return 0;
|
| 267 |
|
|
|
| 268 |
|
|
case NCP_IOC_SIGN_WANTED:
|
| 269 |
|
|
if ( (permission(inode, MAY_READ) != 0)
|
| 270 |
|
|
&& (current->uid != server->m.mounted_uid))
|
| 271 |
|
|
{
|
| 272 |
|
|
return -EACCES;
|
| 273 |
|
|
}
|
| 274 |
|
|
|
| 275 |
|
|
if (put_user(server->sign_wanted, (int*) arg))
|
| 276 |
|
|
return -EFAULT;
|
| 277 |
|
|
return 0;
|
| 278 |
|
|
case NCP_IOC_SET_SIGN_WANTED:
|
| 279 |
|
|
{
|
| 280 |
|
|
int newstate;
|
| 281 |
|
|
|
| 282 |
|
|
if ( (permission(inode, MAY_WRITE) != 0)
|
| 283 |
|
|
&& (current->uid != server->m.mounted_uid))
|
| 284 |
|
|
{
|
| 285 |
|
|
return -EACCES;
|
| 286 |
|
|
}
|
| 287 |
|
|
/* get only low 8 bits... */
|
| 288 |
|
|
if (get_user(newstate, (unsigned char *) arg))
|
| 289 |
|
|
return -EFAULT;
|
| 290 |
|
|
if (server->sign_active) {
|
| 291 |
|
|
/* cannot turn signatures OFF when active */
|
| 292 |
|
|
if (!newstate) return -EINVAL;
|
| 293 |
|
|
} else {
|
| 294 |
|
|
server->sign_wanted = newstate != 0;
|
| 295 |
|
|
}
|
| 296 |
|
|
return 0;
|
| 297 |
|
|
}
|
| 298 |
|
|
|
| 299 |
|
|
#endif /* CONFIG_NCPFS_PACKET_SIGNING */
|
| 300 |
|
|
|
| 301 |
|
|
#ifdef CONFIG_NCPFS_IOCTL_LOCKING
|
| 302 |
|
|
case NCP_IOC_LOCKUNLOCK:
|
| 303 |
|
|
if ( (permission(inode, MAY_WRITE) != 0)
|
| 304 |
|
|
&& (current->uid != server->m.mounted_uid))
|
| 305 |
|
|
{
|
| 306 |
|
|
return -EACCES;
|
| 307 |
|
|
}
|
| 308 |
|
|
{
|
| 309 |
|
|
struct ncp_lock_ioctl rqdata;
|
| 310 |
|
|
int result;
|
| 311 |
|
|
|
| 312 |
|
|
if (copy_from_user(&rqdata, (struct ncp_lock_ioctl*)arg,
|
| 313 |
|
|
sizeof(rqdata))) return -EFAULT;
|
| 314 |
|
|
if (rqdata.origin != 0)
|
| 315 |
|
|
return -EINVAL;
|
| 316 |
|
|
/* check for cmd */
|
| 317 |
|
|
switch (rqdata.cmd) {
|
| 318 |
|
|
case NCP_LOCK_EX:
|
| 319 |
|
|
case NCP_LOCK_SH:
|
| 320 |
|
|
if (rqdata.timeout == 0)
|
| 321 |
|
|
rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT;
|
| 322 |
|
|
else if (rqdata.timeout > NCP_LOCK_MAX_TIMEOUT)
|
| 323 |
|
|
rqdata.timeout = NCP_LOCK_MAX_TIMEOUT;
|
| 324 |
|
|
break;
|
| 325 |
|
|
case NCP_LOCK_LOG:
|
| 326 |
|
|
rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT; /* has no effect */
|
| 327 |
|
|
case NCP_LOCK_CLEAR:
|
| 328 |
|
|
break;
|
| 329 |
|
|
default:
|
| 330 |
|
|
return -EINVAL;
|
| 331 |
|
|
}
|
| 332 |
|
|
/* locking needs both read and write access */
|
| 333 |
|
|
if ((result = ncp_make_open(inode, O_RDWR)) != 0)
|
| 334 |
|
|
{
|
| 335 |
|
|
return result;
|
| 336 |
|
|
}
|
| 337 |
|
|
result = -EIO;
|
| 338 |
|
|
if (!ncp_conn_valid(server))
|
| 339 |
|
|
goto outrel;
|
| 340 |
|
|
result = -EISDIR;
|
| 341 |
|
|
if (!S_ISREG(inode->i_mode))
|
| 342 |
|
|
goto outrel;
|
| 343 |
|
|
if (rqdata.cmd == NCP_LOCK_CLEAR)
|
| 344 |
|
|
{
|
| 345 |
|
|
result = ncp_ClearPhysicalRecord(NCP_SERVER(inode),
|
| 346 |
|
|
NCP_FINFO(inode)->file_handle,
|
| 347 |
|
|
rqdata.offset,
|
| 348 |
|
|
rqdata.length);
|
| 349 |
|
|
if (result > 0) result = 0; /* no such lock */
|
| 350 |
|
|
}
|
| 351 |
|
|
else
|
| 352 |
|
|
{
|
| 353 |
|
|
int lockcmd;
|
| 354 |
|
|
|
| 355 |
|
|
switch (rqdata.cmd)
|
| 356 |
|
|
{
|
| 357 |
|
|
case NCP_LOCK_EX: lockcmd=1; break;
|
| 358 |
|
|
case NCP_LOCK_SH: lockcmd=3; break;
|
| 359 |
|
|
default: lockcmd=0; break;
|
| 360 |
|
|
}
|
| 361 |
|
|
result = ncp_LogPhysicalRecord(NCP_SERVER(inode),
|
| 362 |
|
|
NCP_FINFO(inode)->file_handle,
|
| 363 |
|
|
lockcmd,
|
| 364 |
|
|
rqdata.offset,
|
| 365 |
|
|
rqdata.length,
|
| 366 |
|
|
rqdata.timeout);
|
| 367 |
|
|
if (result > 0) result = -EAGAIN;
|
| 368 |
|
|
}
|
| 369 |
|
|
outrel:
|
| 370 |
|
|
ncp_inode_close(inode);
|
| 371 |
|
|
return result;
|
| 372 |
|
|
}
|
| 373 |
|
|
#endif /* CONFIG_NCPFS_IOCTL_LOCKING */
|
| 374 |
|
|
|
| 375 |
|
|
case NCP_IOC_GETOBJECTNAME:
|
| 376 |
|
|
if (current->uid != server->m.mounted_uid) {
|
| 377 |
|
|
return -EACCES;
|
| 378 |
|
|
}
|
| 379 |
|
|
{
|
| 380 |
|
|
struct ncp_objectname_ioctl user;
|
| 381 |
|
|
size_t outl;
|
| 382 |
|
|
|
| 383 |
|
|
if (copy_from_user(&user,
|
| 384 |
|
|
(struct ncp_objectname_ioctl*)arg,
|
| 385 |
|
|
sizeof(user))) return -EFAULT;
|
| 386 |
|
|
user.auth_type = server->auth.auth_type;
|
| 387 |
|
|
outl = user.object_name_len;
|
| 388 |
|
|
user.object_name_len = server->auth.object_name_len;
|
| 389 |
|
|
if (outl > user.object_name_len)
|
| 390 |
|
|
outl = user.object_name_len;
|
| 391 |
|
|
if (outl) {
|
| 392 |
|
|
if (copy_to_user(user.object_name,
|
| 393 |
|
|
server->auth.object_name,
|
| 394 |
|
|
outl)) return -EFAULT;
|
| 395 |
|
|
}
|
| 396 |
|
|
if (copy_to_user((struct ncp_objectname_ioctl*)arg,
|
| 397 |
|
|
&user,
|
| 398 |
|
|
sizeof(user))) return -EFAULT;
|
| 399 |
|
|
return 0;
|
| 400 |
|
|
}
|
| 401 |
|
|
case NCP_IOC_SETOBJECTNAME:
|
| 402 |
|
|
if (current->uid != server->m.mounted_uid) {
|
| 403 |
|
|
return -EACCES;
|
| 404 |
|
|
}
|
| 405 |
|
|
{
|
| 406 |
|
|
struct ncp_objectname_ioctl user;
|
| 407 |
|
|
void* newname;
|
| 408 |
|
|
void* oldname;
|
| 409 |
|
|
size_t oldnamelen;
|
| 410 |
|
|
void* oldprivate;
|
| 411 |
|
|
size_t oldprivatelen;
|
| 412 |
|
|
|
| 413 |
|
|
if (copy_from_user(&user,
|
| 414 |
|
|
(struct ncp_objectname_ioctl*)arg,
|
| 415 |
|
|
sizeof(user))) return -EFAULT;
|
| 416 |
|
|
if (user.object_name_len > NCP_OBJECT_NAME_MAX_LEN)
|
| 417 |
|
|
return -ENOMEM;
|
| 418 |
|
|
if (user.object_name_len) {
|
| 419 |
|
|
newname = ncp_kmalloc(user.object_name_len, GFP_USER);
|
| 420 |
|
|
if (!newname) return -ENOMEM;
|
| 421 |
|
|
if (copy_from_user(newname, user.object_name, user.object_name_len)) {
|
| 422 |
|
|
ncp_kfree_s(newname, user.object_name_len);
|
| 423 |
|
|
return -EFAULT;
|
| 424 |
|
|
}
|
| 425 |
|
|
} else {
|
| 426 |
|
|
newname = NULL;
|
| 427 |
|
|
}
|
| 428 |
|
|
/* enter critical section */
|
| 429 |
|
|
/* maybe that kfree can sleep so do that this way */
|
| 430 |
|
|
/* it is at least more SMP friendly (in future...) */
|
| 431 |
|
|
oldname = server->auth.object_name;
|
| 432 |
|
|
oldnamelen = server->auth.object_name_len;
|
| 433 |
|
|
oldprivate = server->priv.data;
|
| 434 |
|
|
oldprivatelen = server->priv.len;
|
| 435 |
|
|
server->auth.auth_type = user.auth_type;
|
| 436 |
|
|
server->auth.object_name_len = user.object_name_len;
|
| 437 |
|
|
server->auth.object_name = newname;
|
| 438 |
|
|
server->priv.len = 0;
|
| 439 |
|
|
server->priv.data = NULL;
|
| 440 |
|
|
/* leave critical section */
|
| 441 |
|
|
if (oldprivate) ncp_kfree_s(oldprivate, oldprivatelen);
|
| 442 |
|
|
if (oldname) ncp_kfree_s(oldname, oldnamelen);
|
| 443 |
|
|
return 0;
|
| 444 |
|
|
}
|
| 445 |
|
|
case NCP_IOC_GETPRIVATEDATA:
|
| 446 |
|
|
if (current->uid != server->m.mounted_uid) {
|
| 447 |
|
|
return -EACCES;
|
| 448 |
|
|
}
|
| 449 |
|
|
{
|
| 450 |
|
|
struct ncp_privatedata_ioctl user;
|
| 451 |
|
|
size_t outl;
|
| 452 |
|
|
|
| 453 |
|
|
if (copy_from_user(&user,
|
| 454 |
|
|
(struct ncp_privatedata_ioctl*)arg,
|
| 455 |
|
|
sizeof(user))) return -EFAULT;
|
| 456 |
|
|
outl = user.len;
|
| 457 |
|
|
user.len = server->priv.len;
|
| 458 |
|
|
if (outl > user.len) outl = user.len;
|
| 459 |
|
|
if (outl) {
|
| 460 |
|
|
if (copy_to_user(user.data,
|
| 461 |
|
|
server->priv.data,
|
| 462 |
|
|
outl)) return -EFAULT;
|
| 463 |
|
|
}
|
| 464 |
|
|
if (copy_to_user((struct ncp_privatedata_ioctl*)arg,
|
| 465 |
|
|
&user,
|
| 466 |
|
|
sizeof(user))) return -EFAULT;
|
| 467 |
|
|
return 0;
|
| 468 |
|
|
}
|
| 469 |
|
|
case NCP_IOC_SETPRIVATEDATA:
|
| 470 |
|
|
if (current->uid != server->m.mounted_uid) {
|
| 471 |
|
|
return -EACCES;
|
| 472 |
|
|
}
|
| 473 |
|
|
{
|
| 474 |
|
|
struct ncp_privatedata_ioctl user;
|
| 475 |
|
|
void* new;
|
| 476 |
|
|
void* old;
|
| 477 |
|
|
size_t oldlen;
|
| 478 |
|
|
|
| 479 |
|
|
if (copy_from_user(&user,
|
| 480 |
|
|
(struct ncp_privatedata_ioctl*)arg,
|
| 481 |
|
|
sizeof(user))) return -EFAULT;
|
| 482 |
|
|
if (user.len > NCP_PRIVATE_DATA_MAX_LEN)
|
| 483 |
|
|
return -ENOMEM;
|
| 484 |
|
|
if (user.len) {
|
| 485 |
|
|
new = ncp_kmalloc(user.len, GFP_USER);
|
| 486 |
|
|
if (!new) return -ENOMEM;
|
| 487 |
|
|
if (copy_from_user(new, user.data, user.len)) {
|
| 488 |
|
|
ncp_kfree_s(new, user.len);
|
| 489 |
|
|
return -EFAULT;
|
| 490 |
|
|
}
|
| 491 |
|
|
} else {
|
| 492 |
|
|
new = NULL;
|
| 493 |
|
|
}
|
| 494 |
|
|
/* enter critical section */
|
| 495 |
|
|
old = server->priv.data;
|
| 496 |
|
|
oldlen = server->priv.len;
|
| 497 |
|
|
server->priv.len = user.len;
|
| 498 |
|
|
server->priv.data = new;
|
| 499 |
|
|
/* leave critical section */
|
| 500 |
|
|
if (old) ncp_kfree_s(old, oldlen);
|
| 501 |
|
|
return 0;
|
| 502 |
|
|
}
|
| 503 |
|
|
|
| 504 |
|
|
#ifdef CONFIG_NCPFS_NLS
|
| 505 |
|
|
/* Here we are select the iocharset and the codepage for NLS.
|
| 506 |
|
|
* Thanks Petr Vandrovec for idea and many hints.
|
| 507 |
|
|
*/
|
| 508 |
|
|
case NCP_IOC_SETCHARSETS:
|
| 509 |
|
|
if (!capable(CAP_SYS_ADMIN))
|
| 510 |
|
|
return -EACCES;
|
| 511 |
|
|
if (server->root_setuped)
|
| 512 |
|
|
return -EBUSY;
|
| 513 |
|
|
|
| 514 |
|
|
{
|
| 515 |
|
|
struct ncp_nls_ioctl user;
|
| 516 |
|
|
struct nls_table *codepage;
|
| 517 |
|
|
struct nls_table *iocharset;
|
| 518 |
|
|
struct nls_table *oldset_io;
|
| 519 |
|
|
struct nls_table *oldset_cp;
|
| 520 |
|
|
|
| 521 |
|
|
if (copy_from_user(&user, (struct ncp_nls_ioctl*)arg,
|
| 522 |
|
|
sizeof(user)))
|
| 523 |
|
|
return -EFAULT;
|
| 524 |
|
|
|
| 525 |
|
|
codepage = NULL;
|
| 526 |
|
|
user.codepage[NCP_IOCSNAME_LEN] = 0;
|
| 527 |
|
|
if (!user.codepage[0] ||
|
| 528 |
|
|
!strcmp(user.codepage, "default"))
|
| 529 |
|
|
codepage = load_nls_default();
|
| 530 |
|
|
else {
|
| 531 |
|
|
codepage = load_nls(user.codepage);
|
| 532 |
|
|
if (!codepage) {
|
| 533 |
|
|
return -EBADRQC;
|
| 534 |
|
|
}
|
| 535 |
|
|
}
|
| 536 |
|
|
|
| 537 |
|
|
iocharset = NULL;
|
| 538 |
|
|
user.iocharset[NCP_IOCSNAME_LEN] = 0;
|
| 539 |
|
|
if (!user.iocharset[0] ||
|
| 540 |
|
|
!strcmp(user.iocharset, "default")) {
|
| 541 |
|
|
iocharset = load_nls_default();
|
| 542 |
|
|
NCP_CLR_FLAG(server, NCP_FLAG_UTF8);
|
| 543 |
|
|
} else {
|
| 544 |
|
|
if (!strcmp(user.iocharset, "utf8")) {
|
| 545 |
|
|
iocharset = load_nls_default();
|
| 546 |
|
|
NCP_SET_FLAG(server, NCP_FLAG_UTF8);
|
| 547 |
|
|
} else {
|
| 548 |
|
|
iocharset = load_nls(user.iocharset);
|
| 549 |
|
|
if (!iocharset) {
|
| 550 |
|
|
unload_nls(codepage);
|
| 551 |
|
|
return -EBADRQC;
|
| 552 |
|
|
}
|
| 553 |
|
|
NCP_CLR_FLAG(server, NCP_FLAG_UTF8);
|
| 554 |
|
|
}
|
| 555 |
|
|
}
|
| 556 |
|
|
|
| 557 |
|
|
oldset_cp = server->nls_vol;
|
| 558 |
|
|
server->nls_vol = codepage;
|
| 559 |
|
|
oldset_io = server->nls_io;
|
| 560 |
|
|
server->nls_io = iocharset;
|
| 561 |
|
|
|
| 562 |
|
|
if (oldset_cp)
|
| 563 |
|
|
unload_nls(oldset_cp);
|
| 564 |
|
|
if (oldset_io)
|
| 565 |
|
|
unload_nls(oldset_io);
|
| 566 |
|
|
|
| 567 |
|
|
return 0;
|
| 568 |
|
|
}
|
| 569 |
|
|
|
| 570 |
|
|
case NCP_IOC_GETCHARSETS: /* not tested */
|
| 571 |
|
|
{
|
| 572 |
|
|
struct ncp_nls_ioctl user;
|
| 573 |
|
|
int len;
|
| 574 |
|
|
|
| 575 |
|
|
memset(&user, 0, sizeof(user));
|
| 576 |
|
|
if (server->nls_vol && server->nls_vol->charset) {
|
| 577 |
|
|
len = strlen(server->nls_vol->charset);
|
| 578 |
|
|
if (len > NCP_IOCSNAME_LEN)
|
| 579 |
|
|
len = NCP_IOCSNAME_LEN;
|
| 580 |
|
|
strncpy(user.codepage,
|
| 581 |
|
|
server->nls_vol->charset, len);
|
| 582 |
|
|
user.codepage[len] = 0;
|
| 583 |
|
|
}
|
| 584 |
|
|
|
| 585 |
|
|
if (NCP_IS_FLAG(server, NCP_FLAG_UTF8))
|
| 586 |
|
|
strcpy(user.iocharset, "utf8");
|
| 587 |
|
|
else
|
| 588 |
|
|
if (server->nls_io && server->nls_io->charset) {
|
| 589 |
|
|
len = strlen(server->nls_io->charset);
|
| 590 |
|
|
if (len > NCP_IOCSNAME_LEN)
|
| 591 |
|
|
len = NCP_IOCSNAME_LEN;
|
| 592 |
|
|
strncpy(user.iocharset,
|
| 593 |
|
|
server->nls_io->charset, len);
|
| 594 |
|
|
user.iocharset[len] = 0;
|
| 595 |
|
|
}
|
| 596 |
|
|
|
| 597 |
|
|
if (copy_to_user((struct ncp_nls_ioctl*)arg, &user,
|
| 598 |
|
|
sizeof(user)))
|
| 599 |
|
|
return -EFAULT;
|
| 600 |
|
|
|
| 601 |
|
|
return 0;
|
| 602 |
|
|
}
|
| 603 |
|
|
#endif /* CONFIG_NCPFS_NLS */
|
| 604 |
|
|
case NCP_IOC_SETDENTRYTTL:
|
| 605 |
|
|
if ((permission(inode, MAY_WRITE) != 0) &&
|
| 606 |
|
|
(current->uid != server->m.mounted_uid))
|
| 607 |
|
|
return -EACCES;
|
| 608 |
|
|
{
|
| 609 |
|
|
u_int32_t user;
|
| 610 |
|
|
|
| 611 |
|
|
if (copy_from_user(&user, (u_int32_t*)arg, sizeof(user)))
|
| 612 |
|
|
return -EFAULT;
|
| 613 |
|
|
/* 20 secs at most... */
|
| 614 |
|
|
if (user > 20000)
|
| 615 |
|
|
return -EINVAL;
|
| 616 |
|
|
user = (user * HZ) / 1000;
|
| 617 |
|
|
server->dentry_ttl = user;
|
| 618 |
|
|
return 0;
|
| 619 |
|
|
}
|
| 620 |
|
|
|
| 621 |
|
|
case NCP_IOC_GETDENTRYTTL:
|
| 622 |
|
|
{
|
| 623 |
|
|
u_int32_t user = (server->dentry_ttl * 1000) / HZ;
|
| 624 |
|
|
if (copy_to_user((u_int32_t*)arg, &user, sizeof(user)))
|
| 625 |
|
|
return -EFAULT;
|
| 626 |
|
|
return 0;
|
| 627 |
|
|
}
|
| 628 |
|
|
|
| 629 |
|
|
}
|
| 630 |
|
|
/* #ifdef CONFIG_UID16 */
|
| 631 |
|
|
/* NCP_IOC_GETMOUNTUID may be same as NCP_IOC_GETMOUNTUID2,
|
| 632 |
|
|
so we have this out of switch */
|
| 633 |
|
|
if (cmd == NCP_IOC_GETMOUNTUID) {
|
| 634 |
|
|
if ((permission(inode, MAY_READ) != 0)
|
| 635 |
|
|
&& (current->uid != server->m.mounted_uid)) {
|
| 636 |
|
|
return -EACCES;
|
| 637 |
|
|
}
|
| 638 |
|
|
if (put_user(NEW_TO_OLD_UID(server->m.mounted_uid), (__kernel_uid_t *) arg))
|
| 639 |
|
|
return -EFAULT;
|
| 640 |
|
|
return 0;
|
| 641 |
|
|
}
|
| 642 |
|
|
/* #endif */
|
| 643 |
|
|
return -EINVAL;
|
| 644 |
|
|
}
|
