89 lines
1.8 KiB
C
89 lines
1.8 KiB
C
/*
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* ioctl.c
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*
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* Copyright (C) 1995 by Volker Lendecke
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*
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*/
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#include <linux/config.h>
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#ifdef MODULE
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#include <linux/module.h>
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#include <linux/version.h>
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#else
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#define MOD_INC_USE_COUNT
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#define MOD_DEC_USE_COUNT
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#endif
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#include <asm/segment.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/ncp_fs.h>
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#include <linux/ioctl.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/ncp.h>
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int
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ncp_ioctl (struct inode * inode, struct file * filp,
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unsigned int cmd, unsigned long arg)
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{
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int result;
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struct ncp_ioctl_request request;
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struct ncp_server *server;
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switch(cmd) {
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case NCP_IOC_NCPREQUEST:
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if (!suser()) {
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return -EPERM;
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}
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if ((result = verify_area(VERIFY_READ, (char *)arg,
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sizeof(request))) != 0) {
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return result;
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}
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memcpy_fromfs(&request, (struct ncp_ioctl_request *)arg,
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sizeof(request));
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if ( (request.function > 255)
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|| (request.size >
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NCP_PACKET_SIZE - sizeof(struct ncp_request_header))) {
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return -EINVAL;
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}
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if ((result = verify_area(VERIFY_WRITE, (char *)request.data,
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NCP_PACKET_SIZE)) != 0) {
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return result;
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}
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server = NCP_SERVER(inode);
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ncp_lock_server(server);
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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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server->has_subfunction = 0;
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server->current_size =
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request.size + sizeof(struct ncp_request_header);
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memcpy_fromfs(&(server->
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packet[sizeof(struct ncp_request_header)]),
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request.data, request.size);
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ncp_request(server, request.function);
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DPRINTK("ncp_ioctl: copy %d bytes\n",
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server->reply_size);
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memcpy_tofs(request.data, server->packet,
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server->reply_size);
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ncp_unlock_server(server);
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return server->reply_size;
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default:
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return -EINVAL;
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}
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return -EINVAL;
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}
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