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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [fs/] [ncpfs/] [ioctl.c] - Blame information for rev 1765

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/*
 *  ioctl.c
 *
 *  Copyright (C) 1995, 1996 by Volker Lendecke
 *
 */
 
#include <linux/config.h>
 
#include <asm/segment.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/ncp_fs.h>
#include <linux/ioctl.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/ncp.h>
#include "ncplib_kernel.h"
 
int
ncp_ioctl (struct inode * inode, struct file * filp,
           unsigned int cmd, unsigned long arg)
{
        int result;
        struct ncp_ioctl_request request;
        struct ncp_fs_info info;
        struct ncp_server *server = NCP_SERVER(inode);
 
        /*
         * Binary compatible with 1.3.XX releases.
         * Take this out in 2.1.0 development series.
         * <mec@duracef.shout.net> 12 Mar 1996
         */
        switch(cmd) {
        case _IOR('n', 1, unsigned char *):
            cmd = NCP_IOC_NCPREQUEST;
            break;
        case _IOR('u', 1, uid_t):
            cmd = NCP_IOC_GETMOUNTUID;
            break;
        case _IO('l', 1):
            cmd = NCP_IOC_CONN_LOGGED_IN;
            break;
        case _IOWR('i', 1, unsigned char *):
            cmd = NCP_IOC_GET_FS_INFO;
            break;
        }
 
        switch(cmd) {
        case NCP_IOC_NCPREQUEST:
 
                if (   (permission(inode, MAY_WRITE) != 0)
                    && (current->uid != server->m.mounted_uid))
                {
                        return -EACCES;
                }
 
                if ((result = verify_area(VERIFY_READ, (char *)arg,
                                          sizeof(request))) != 0)
                {
                        return result;
                }
 
                memcpy_fromfs(&request, (struct ncp_ioctl_request *)arg,
                              sizeof(request));
 
                if (   (request.function > 255)
                    || (request.size >
                        NCP_PACKET_SIZE - sizeof(struct ncp_request_header)))
                {
                        return -EINVAL;
                }
 
                if ((result = verify_area(VERIFY_WRITE, (char *)request.data,
                                          NCP_PACKET_SIZE)) != 0)
                {
                        return result;
                }
 
                ncp_lock_server(server);
 
                /* FIXME: We hack around in the server's structures
                   here to be able to use ncp_request */
 
                server->has_subfunction = 0;
                server->current_size = request.size;
                memcpy_fromfs(server->packet, request.data, request.size);
 
                ncp_request(server, request.function);
 
                DPRINTK("ncp_ioctl: copy %d bytes\n",
                        server->reply_size);
                memcpy_tofs(request.data, server->packet, server->reply_size);
 
                ncp_unlock_server(server);
 
                return server->reply_size;
 
        case NCP_IOC_CONN_LOGGED_IN:
 
                if (   (permission(inode, MAY_WRITE) != 0)
                    && (current->uid != server->m.mounted_uid))
                {
                        return -EACCES;
                }
 
                return ncp_conn_logged_in(server);
 
        case NCP_IOC_GET_FS_INFO:
 
                if (   (permission(inode, MAY_WRITE) != 0)
                    && (current->uid != server->m.mounted_uid))
                {
                        return -EACCES;
                }
 
                if ((result = verify_area(VERIFY_WRITE, (char *)arg,
                                          sizeof(info))) != 0)
                {
                        return result;
                }
 
                memcpy_fromfs(&info, (struct ncp_fs_info *)arg,
                              sizeof(info));
 
                if (info.version != NCP_GET_FS_INFO_VERSION)
                {
                        DPRINTK("info.version invalid: %d\n", info.version);
                        return -EINVAL;
                }
 
                info.addr          = server->m.serv_addr;
                info.mounted_uid   = server->m.mounted_uid;
                info.connection    = server->connection;
                info.buffer_size   = server->buffer_size;
                info.volume_number = NCP_ISTRUCT(inode)->volNumber;
                info.directory_id  = NCP_ISTRUCT(inode)->DosDirNum;
 
                memcpy_tofs((struct ncp_fs_info *)arg, &info, sizeof(info));
                return 0;
 
        case NCP_IOC_GETMOUNTUID:
 
                if (   (permission(inode, MAY_READ) != 0)
                    && (current->uid != server->m.mounted_uid))
                {
                        return -EACCES;
                }
 
                if ((result = verify_area(VERIFY_WRITE, (uid_t*) arg,
                                          sizeof(uid_t))) != 0)
                {
                        return result;
                }
                put_fs_word(server->m.mounted_uid, (uid_t*) arg);
                return 0;
 
#if 0
        case NCP_IOC_GETMOUNTUID_INT:
                if (   (permission(inode, MAY_READ) != 0)
                    && (current->uid != server->m.mounted_uid))
                {
                        return -EACCES;
                }
 
                if ((result = verify_area(VERIFY_WRITE, (unsigned int*)arg,
                                        sizeof(unsigned int))) != 0)
                {
                        return result;
                }
                {
                        unsigned int tmp=server->m.mounted_uid;
                        put_fs_long(tmp, (unsigned int*) arg);
                }
                return 0;
#endif
 
#ifdef CONFIG_NCPFS_MOUNT_SUBDIR
        case NCP_IOC_GETROOT:
                {
                        struct ncp_setroot_ioctl sr;
 
                        if (   (permission(inode, MAY_READ) != 0)
                            && (current->uid != server->m.mounted_uid))
                        {
                                return -EACCES;
                        }
                        if (server->m.mounted_vol[0]) {
                                sr.volNumber = server->root.finfo.i.volNumber;
                                sr.dirEntNum = server->root.finfo.i.dirEntNum;
                                sr.namespace = server->name_space[sr.volNumber];
                        } else {
                                sr.volNumber = -1;
                                sr.namespace = 0;
                                sr.dirEntNum = 0;
                        }
                        if ((result = verify_area(VERIFY_WRITE,
                                                  (struct ncp_setroot_ioctl*)arg,
                                                  sizeof(sr))) != 0)
                        {
                                return result;
                        }
                        memcpy_tofs((struct ncp_setroot_ioctl*)arg,
                                    &sr, sizeof(sr));
                        return 0;
                }
        case NCP_IOC_SETROOT:
                {
                        struct ncp_setroot_ioctl sr;
 
                        if (   (permission(inode, MAY_WRITE) != 0)
                            && (current->uid != server->m.mounted_uid))
                        {
                                return -EACCES;
                        }
                        if ((result = verify_area(VERIFY_READ,
                                                  (struct ncp_setroot_ioctl*)arg,
                                                  sizeof(sr))) != 0)
                        {
                                return result;
                        }
                        memcpy_fromfs(&sr, (struct ncp_setroot_ioctl*)arg, sizeof(sr));
                        if (sr.volNumber < 0) {
                                server->m.mounted_vol[0] = 0;
                                server->root.finfo.i.volNumber = 0;
                                server->root.finfo.i.dirEntNum = 0;
                        } else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) {
                                return -EINVAL;
                        } else {
                                if (ncp_mount_subdir(server, sr.volNumber, sr.namespace, sr.dirEntNum)) {
                                        return -ENOENT;
                                }
                        }
                        return 0;
                }
#endif  /* CONFIG_NCPFS_MOUNT_SUBDIR */
 
#ifdef CONFIG_NCPFS_PACKET_SIGNING      
        case NCP_IOC_SIGN_INIT:
                if ((permission(inode, MAY_WRITE) != 0)
                    && (current->uid != server->m.mounted_uid))
                {
                        return -EACCES;
                }
                if ((result = verify_area(VERIFY_READ, (struct ncp_sign_init*)arg,
                                          sizeof(struct ncp_sign_init))) != 0)
                {
                        return result;
                }
                if (server->sign_active)
                {
                        return -EINVAL;
                }
                if (server->sign_wanted)
                {
                        struct ncp_sign_init sign;
 
                        memcpy_fromfs(&sign, (struct ncp_sign_init *) arg,
                              sizeof(sign));
                        memcpy(server->sign_root,sign.sign_root,8);
                        memcpy(server->sign_last,sign.sign_last,16);
                        server->sign_active = 1;
                }
                /* ignore when signatures not wanted */
                return 0;
 
        case NCP_IOC_SIGN_WANTED:
                if (   (permission(inode, MAY_READ) != 0)
                    && (current->uid != server->m.mounted_uid))
                {
                        return -EACCES;
                }
                if ((result = verify_area(VERIFY_WRITE, (int*) arg,
                                          sizeof(int))) != 0)
                {
                        return result;
                }
                /* Should not it be put_fs_long? Vandrove@vc.cvut.cz */
                put_fs_word(server->sign_wanted, (int*) arg);
                return 0;
 
        case NCP_IOC_SET_SIGN_WANTED:
                {
                        int newstate;
 
                        if (   (permission(inode, MAY_WRITE) != 0)
                            && (current->uid != server->m.mounted_uid))
                        {
                                return -EACCES;
                        }
                        if ((result = verify_area(VERIFY_READ, (int*) arg,
                                                  sizeof(int))) != 0)
                        {
                                return result;
                        }
                        /* get only low 8 bits... */
                        newstate = get_fs_byte((unsigned char*)arg);
                        if (server->sign_active) {
                                /* cannot turn signatures OFF when active */
                                if (!newstate) return -EINVAL;
                        } else {
                                server->sign_wanted = newstate != 0;
                        }
                        return 0;
                }
 
#endif /* CONFIG_NCPFS_PACKET_SIGNING */
 
#ifdef CONFIG_NCPFS_IOCTL_LOCKING
        case NCP_IOC_LOCKUNLOCK:
                if (   (permission(inode, MAY_WRITE) != 0)
                    && (current->uid != server->m.mounted_uid))
                {
                        return -EACCES;
                }
                {
                        struct ncp_lock_ioctl    rqdata;
                        struct nw_file_info     *finfo;
                        int result;
 
                        if ((result = verify_area(VERIFY_READ,
                                        (struct ncp_lock_ioctl*)arg,
                                        sizeof(rqdata))) != 0)
                        {
                                return result;
                        }
                        memcpy_fromfs(&rqdata, (struct ncp_lock_ioctl*)arg,
                                sizeof(rqdata));
                        if (rqdata.origin != 0)
                                return -EINVAL;
                        /* check for cmd */
                        switch (rqdata.cmd) {
                                case NCP_LOCK_EX:
                                case NCP_LOCK_SH:
                                                if (rqdata.timeout == 0)
                                                        rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT;
                                                else if (rqdata.timeout > NCP_LOCK_MAX_TIMEOUT)
                                                        rqdata.timeout = NCP_LOCK_MAX_TIMEOUT;
                                                break;
                                case NCP_LOCK_LOG:
                                                rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT;      /* has no effect */
                                case NCP_LOCK_CLEAR:
                                                break;
                                default:
                                                return -EINVAL;
                        }
                        if ((result = ncp_make_open(inode, O_RDWR)) != 0)
                        {
                                return result;
                        }
                        if (!ncp_conn_valid(server))
                        {
                                return -EIO;
                        }
                        if (!S_ISREG(inode->i_mode))
                        {
                                return -EISDIR;
                        }
                        finfo=NCP_FINFO(inode);
                        if (!finfo->opened)
                        {
                                return -EBADFD;
                        }
                        if (rqdata.cmd == NCP_LOCK_CLEAR)
                        {
                                result = ncp_ClearPhysicalRecord(NCP_SERVER(inode),
                                                        finfo->file_handle,
                                                        rqdata.offset,
                                                        rqdata.length);
                                if (result > 0) result = 0;       /* no such lock */
                        }
                        else
                        {
                                int lockcmd;
 
                                switch (rqdata.cmd)
                                {
                                        case NCP_LOCK_EX:  lockcmd=1; break;
                                        case NCP_LOCK_SH:  lockcmd=3; break;
                                        default:           lockcmd=0; break;
                                }
                                result = ncp_LogPhysicalRecord(NCP_SERVER(inode),
                                                        finfo->file_handle,
                                                        lockcmd,
                                                        rqdata.offset,
                                                        rqdata.length,
                                                        rqdata.timeout);
                                if (result > 0) result = -EAGAIN;
                        }
                        return result;
                }
#endif  /* CONFIG_NCPFS_IOCTL_LOCKING */
 
        default:
                return -EINVAL;
        }
 
        return -EINVAL;
}

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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [fs/] [ncpfs/] [ioctl.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	199	simons	`/*`
2			`* ioctl.c`
3			`*`
4			`* Copyright (C) 1995, 1996 by Volker Lendecke`
5			`*`
6			`*/`
7
8			`#include <linux/config.h>`
9
10			`#include <asm/segment.h>`
11			`#include <linux/errno.h>`
12			`#include <linux/fs.h>`
13			`#include <linux/ncp_fs.h>`
14			`#include <linux/ioctl.h>`
15			`#include <linux/sched.h>`
16			`#include <linux/mm.h>`
17			`#include <linux/ncp.h>`
18			`#include "ncplib_kernel.h"`
19
20			`int`
21			`ncp_ioctl (struct inode * inode, struct file * filp,`
22			`unsigned int cmd, unsigned long arg)`
23			`{`
24			`int result;`
25			`struct ncp_ioctl_request request;`
26			`struct ncp_fs_info info;`
27			`struct ncp_server *server = NCP_SERVER(inode);`
28
29			`/*`
30			`* Binary compatible with 1.3.XX releases.`
31			`* Take this out in 2.1.0 development series.`
32			`* <mec@duracef.shout.net> 12 Mar 1996`
33			`*/`
34			`switch(cmd) {`
35			`case _IOR('n', 1, unsigned char *):`
36			`cmd = NCP_IOC_NCPREQUEST;`
37			`break;`
38			`case _IOR('u', 1, uid_t):`
39			`cmd = NCP_IOC_GETMOUNTUID;`
40			`break;`
41			`case _IO('l', 1):`
42			`cmd = NCP_IOC_CONN_LOGGED_IN;`
43			`break;`
44			`case _IOWR('i', 1, unsigned char *):`
45			`cmd = NCP_IOC_GET_FS_INFO;`
46			`break;`
47			`}`
48
49			`switch(cmd) {`
50			`case NCP_IOC_NCPREQUEST:`
51
52			`if ( (permission(inode, MAY_WRITE) != 0)`
53			`&& (current->uid != server->m.mounted_uid))`
54			`{`
55			`return -EACCES;`
56			`}`
57
58			`if ((result = verify_area(VERIFY_READ, (char *)arg,`
59			`sizeof(request))) != 0)`
60			`{`
61			`return result;`
62			`}`
63
64			`memcpy_fromfs(&request, (struct ncp_ioctl_request *)arg,`
65			`sizeof(request));`
66
67			`if ( (request.function > 255)`
68			`\|\| (request.size >`
69			`NCP_PACKET_SIZE - sizeof(struct ncp_request_header)))`
70			`{`
71			`return -EINVAL;`
72			`}`
73
74			`if ((result = verify_area(VERIFY_WRITE, (char *)request.data,`
75			`NCP_PACKET_SIZE)) != 0)`
76			`{`
77			`return result;`
78			`}`
79
80			`ncp_lock_server(server);`
81
82			`/* FIXME: We hack around in the server's structures`
83			`here to be able to use ncp_request */`
84
85			`server->has_subfunction = 0;`
86			`server->current_size = request.size;`
87			`memcpy_fromfs(server->packet, request.data, request.size);`
88
89			`ncp_request(server, request.function);`
90
91			`DPRINTK("ncp_ioctl: copy %d bytes\n",`
92			`server->reply_size);`
93			`memcpy_tofs(request.data, server->packet, server->reply_size);`
94
95			`ncp_unlock_server(server);`
96
97			`return server->reply_size;`
98
99			`case NCP_IOC_CONN_LOGGED_IN:`
100
101			`if ( (permission(inode, MAY_WRITE) != 0)`
102			`&& (current->uid != server->m.mounted_uid))`
103			`{`
104			`return -EACCES;`
105			`}`
106
107			`return ncp_conn_logged_in(server);`
108
109			`case NCP_IOC_GET_FS_INFO:`
110
111			`if ( (permission(inode, MAY_WRITE) != 0)`
112			`&& (current->uid != server->m.mounted_uid))`
113			`{`
114			`return -EACCES;`
115			`}`
116
117			`if ((result = verify_area(VERIFY_WRITE, (char *)arg,`
118			`sizeof(info))) != 0)`
119			`{`
120			`return result;`
121			`}`
122
123			`memcpy_fromfs(&info, (struct ncp_fs_info *)arg,`
124			`sizeof(info));`
125
126			`if (info.version != NCP_GET_FS_INFO_VERSION)`
127			`{`
128			`DPRINTK("info.version invalid: %d\n", info.version);`
129			`return -EINVAL;`
130			`}`
131
132			`info.addr = server->m.serv_addr;`
133			`info.mounted_uid = server->m.mounted_uid;`
134			`info.connection = server->connection;`
135			`info.buffer_size = server->buffer_size;`
136			`info.volume_number = NCP_ISTRUCT(inode)->volNumber;`
137			`info.directory_id = NCP_ISTRUCT(inode)->DosDirNum;`
138
139			`memcpy_tofs((struct ncp_fs_info *)arg, &info, sizeof(info));`
140			`return 0;`
141
142			`case NCP_IOC_GETMOUNTUID:`
143
144			`if ( (permission(inode, MAY_READ) != 0)`
145			`&& (current->uid != server->m.mounted_uid))`
146			`{`
147			`return -EACCES;`
148			`}`
149
150			`if ((result = verify_area(VERIFY_WRITE, (uid_t*) arg,`
151			`sizeof(uid_t))) != 0)`
152			`{`
153			`return result;`
154			`}`
155			`put_fs_word(server->m.mounted_uid, (uid_t*) arg);`
156			`return 0;`
157
158			`#if 0`
159			`case NCP_IOC_GETMOUNTUID_INT:`
160			`if ( (permission(inode, MAY_READ) != 0)`
161			`&& (current->uid != server->m.mounted_uid))`
162			`{`
163			`return -EACCES;`
164			`}`
165
166			`if ((result = verify_area(VERIFY_WRITE, (unsigned int*)arg,`
167			`sizeof(unsigned int))) != 0)`
168			`{`
169			`return result;`
170			`}`
171			`{`
172			`unsigned int tmp=server->m.mounted_uid;`
173			`put_fs_long(tmp, (unsigned int*) arg);`
174			`}`
175			`return 0;`
176			`#endif`
177
178			`#ifdef CONFIG_NCPFS_MOUNT_SUBDIR`
179			`case NCP_IOC_GETROOT:`
180			`{`
181			`struct ncp_setroot_ioctl sr;`
182
183			`if ( (permission(inode, MAY_READ) != 0)`
184			`&& (current->uid != server->m.mounted_uid))`
185			`{`
186			`return -EACCES;`
187			`}`
188			`if (server->m.mounted_vol[0]) {`
189			`sr.volNumber = server->root.finfo.i.volNumber;`
190			`sr.dirEntNum = server->root.finfo.i.dirEntNum;`
191			`sr.namespace = server->name_space[sr.volNumber];`
192			`} else {`
193			`sr.volNumber = -1;`
194			`sr.namespace = 0;`
195			`sr.dirEntNum = 0;`
196			`}`
197			`if ((result = verify_area(VERIFY_WRITE,`
198			`(struct ncp_setroot_ioctl*)arg,`
199			`sizeof(sr))) != 0)`
200			`{`
201			`return result;`
202			`}`
203			`memcpy_tofs((struct ncp_setroot_ioctl*)arg,`
204			`&sr, sizeof(sr));`
205			`return 0;`
206			`}`
207			`case NCP_IOC_SETROOT:`
208			`{`
209			`struct ncp_setroot_ioctl sr;`
210
211			`if ( (permission(inode, MAY_WRITE) != 0)`
212			`&& (current->uid != server->m.mounted_uid))`
213			`{`
214			`return -EACCES;`
215			`}`
216			`if ((result = verify_area(VERIFY_READ,`
217			`(struct ncp_setroot_ioctl*)arg,`
218			`sizeof(sr))) != 0)`
219			`{`
220			`return result;`
221			`}`
222			`memcpy_fromfs(&sr, (struct ncp_setroot_ioctl*)arg, sizeof(sr));`
223			`if (sr.volNumber < 0) {`
224			`server->m.mounted_vol[0] = 0;`
225			`server->root.finfo.i.volNumber = 0;`
226			`server->root.finfo.i.dirEntNum = 0;`
227			`} else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) {`
228			`return -EINVAL;`
229			`} else {`
230			`if (ncp_mount_subdir(server, sr.volNumber, sr.namespace, sr.dirEntNum)) {`
231			`return -ENOENT;`
232			`}`
233			`}`
234			`return 0;`
235			`}`
236			`#endif /* CONFIG_NCPFS_MOUNT_SUBDIR */`
237
238			`#ifdef CONFIG_NCPFS_PACKET_SIGNING`
239			`case NCP_IOC_SIGN_INIT:`
240			`if ((permission(inode, MAY_WRITE) != 0)`
241			`&& (current->uid != server->m.mounted_uid))`
242			`{`
243			`return -EACCES;`
244			`}`
245			`if ((result = verify_area(VERIFY_READ, (struct ncp_sign_init*)arg,`
246			`sizeof(struct ncp_sign_init))) != 0)`
247			`{`
248			`return result;`
249			`}`
250			`if (server->sign_active)`
251			`{`
252			`return -EINVAL;`
253			`}`
254			`if (server->sign_wanted)`
255			`{`
256			`struct ncp_sign_init sign;`
257
258			`memcpy_fromfs(&sign, (struct ncp_sign_init *) arg,`
259			`sizeof(sign));`
260			`memcpy(server->sign_root,sign.sign_root,8);`
261			`memcpy(server->sign_last,sign.sign_last,16);`
262			`server->sign_active = 1;`
263			`}`
264			`/* ignore when signatures not wanted */`
265			`return 0;`
266
267			`case NCP_IOC_SIGN_WANTED:`
268			`if ( (permission(inode, MAY_READ) != 0)`
269			`&& (current->uid != server->m.mounted_uid))`
270			`{`
271			`return -EACCES;`
272			`}`
273			`if ((result = verify_area(VERIFY_WRITE, (int*) arg,`
274			`sizeof(int))) != 0)`
275			`{`
276			`return result;`
277			`}`
278			`/* Should not it be put_fs_long? Vandrove@vc.cvut.cz */`
279			`put_fs_word(server->sign_wanted, (int*) arg);`
280			`return 0;`
281
282			`case NCP_IOC_SET_SIGN_WANTED:`
283			`{`
284			`int newstate;`
285
286			`if ( (permission(inode, MAY_WRITE) != 0)`
287			`&& (current->uid != server->m.mounted_uid))`
288			`{`
289			`return -EACCES;`
290			`}`
291			`if ((result = verify_area(VERIFY_READ, (int*) arg,`
292			`sizeof(int))) != 0)`
293			`{`
294			`return result;`
295			`}`
296			`/* get only low 8 bits... */`
297			`newstate = get_fs_byte((unsigned char*)arg);`
298			`if (server->sign_active) {`
299			`/* cannot turn signatures OFF when active */`
300			`if (!newstate) return -EINVAL;`
301			`} else {`
302			`server->sign_wanted = newstate != 0;`
303			`}`
304			`return 0;`
305			`}`
306
307			`#endif /* CONFIG_NCPFS_PACKET_SIGNING */`
308
309			`#ifdef CONFIG_NCPFS_IOCTL_LOCKING`
310			`case NCP_IOC_LOCKUNLOCK:`
311			`if ( (permission(inode, MAY_WRITE) != 0)`
312			`&& (current->uid != server->m.mounted_uid))`
313			`{`
314			`return -EACCES;`
315			`}`
316			`{`
317			`struct ncp_lock_ioctl rqdata;`
318			`struct nw_file_info *finfo;`
319			`int result;`
320
321			`if ((result = verify_area(VERIFY_READ,`
322			`(struct ncp_lock_ioctl*)arg,`
323			`sizeof(rqdata))) != 0)`
324			`{`
325			`return result;`
326			`}`
327			`memcpy_fromfs(&rqdata, (struct ncp_lock_ioctl*)arg,`
328			`sizeof(rqdata));`
329			`if (rqdata.origin != 0)`
330			`return -EINVAL;`
331			`/* check for cmd */`
332			`switch (rqdata.cmd) {`
333			`case NCP_LOCK_EX:`
334			`case NCP_LOCK_SH:`
335			`if (rqdata.timeout == 0)`
336			`rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT;`
337			`else if (rqdata.timeout > NCP_LOCK_MAX_TIMEOUT)`
338			`rqdata.timeout = NCP_LOCK_MAX_TIMEOUT;`
339			`break;`
340			`case NCP_LOCK_LOG:`
341			`rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT; /* has no effect */`
342			`case NCP_LOCK_CLEAR:`
343			`break;`
344			`default:`
345			`return -EINVAL;`
346			`}`
347			`if ((result = ncp_make_open(inode, O_RDWR)) != 0)`
348			`{`
349			`return result;`
350			`}`
351			`if (!ncp_conn_valid(server))`
352			`{`
353			`return -EIO;`
354			`}`
355			`if (!S_ISREG(inode->i_mode))`
356			`{`
357			`return -EISDIR;`
358			`}`
359			`finfo=NCP_FINFO(inode);`
360			`if (!finfo->opened)`
361			`{`
362			`return -EBADFD;`
363			`}`
364			`if (rqdata.cmd == NCP_LOCK_CLEAR)`
365			`{`
366			`result = ncp_ClearPhysicalRecord(NCP_SERVER(inode),`
367			`finfo->file_handle,`
368			`rqdata.offset,`
369			`rqdata.length);`
370			`if (result > 0) result = 0; /* no such lock */`
371			`}`
372			`else`
373			`{`
374			`int lockcmd;`
375
376			`switch (rqdata.cmd)`
377			`{`
378			`case NCP_LOCK_EX: lockcmd=1; break;`
379			`case NCP_LOCK_SH: lockcmd=3; break;`
380			`default: lockcmd=0; break;`
381			`}`
382			`result = ncp_LogPhysicalRecord(NCP_SERVER(inode),`
383			`finfo->file_handle,`
384			`lockcmd,`
385			`rqdata.offset,`
386			`rqdata.length,`
387			`rqdata.timeout);`
388			`if (result > 0) result = -EAGAIN;`
389			`}`
390			`return result;`
391			`}`
392			`#endif /* CONFIG_NCPFS_IOCTL_LOCKING */`
393
394			`default:`
395			`return -EINVAL;`
396			`}`
397
398			`return -EINVAL;`
399			`}`