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1 | /* |
1 | /* |
2 | * Copyright (c) 2009 Lukas Mejdrech |
2 | * Copyright (c) 2009 Lukas Mejdrech |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup packet |
29 | /** @addtogroup packet |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | /** @file |
33 | /** @file |
34 | * Packet client implementation. |
34 | * Packet client implementation. |
35 | */ |
35 | */ |
36 | 36 | ||
37 | #include <async.h> |
37 | #include <async.h> |
38 | #include <errno.h> |
38 | #include <errno.h> |
39 | #include <mem.h> |
39 | #include <mem.h> |
40 | #include <unistd.h> |
40 | #include <unistd.h> |
41 | //#include <stdio.h> |
41 | //#include <stdio.h> |
42 | 42 | ||
43 | #include <ipc/ipc.h> |
43 | #include <ipc/ipc.h> |
44 | #include <sys/mman.h> |
44 | #include <sys/mman.h> |
45 | 45 | ||
46 | #include "../../err.h" |
46 | #include "../../err.h" |
47 | #include "../../messages.h" |
47 | #include "../../messages.h" |
48 | 48 | ||
49 | #include "packet.h" |
49 | #include "packet.h" |
50 | #include "packet_header.h" |
50 | #include "packet_header.h" |
51 | #include "packet_client.h" |
51 | #include "packet_client.h" |
52 | 52 | ||
53 | /** Obtains the packet from the packet server as the shared memory block. |
53 | /** Obtains the packet from the packet server as the shared memory block. |
54 | * Creates the local packet mapping as well. |
54 | * Creates the local packet mapping as well. |
55 | * @param phone The packet server module phone. Input parameter. |
55 | * @param phone The packet server module phone. Input parameter. |
56 | * @param packet The packet reference pointer to store the received packet reference. Output parameter. |
56 | * @param packet The packet reference pointer to store the received packet reference. Output parameter. |
57 | * @param packet_id The packet identifier. Input parameter. |
57 | * @param packet_id The packet identifier. Input parameter. |
58 | * @param size The packet total size in bytes. Input parameter. |
58 | * @param size The packet total size in bytes. Input parameter. |
59 | * @returns EOK on success. |
59 | * @returns EOK on success. |
60 | * \todo ipc_share_in_start() error? |
60 | * \todo ipc_share_in_start() error? |
61 | * @returns Other error codes as defined for the pm_add() function. |
61 | * @returns Other error codes as defined for the pm_add() function. |
62 | */ |
62 | */ |
63 | int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ); |
63 | int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ); |
64 | 64 | ||
65 | int packet_copy_data( packet_t packet, const void * data, size_t length ){ |
65 | int packet_copy_data( packet_t packet, const void * data, size_t length ){ |
66 | if( ! packet_is_valid( packet )) return EINVAL; |
66 | if( ! packet_is_valid( packet )) return EINVAL; |
67 | if( packet->data_start + length >= packet->length ) return ENOMEM; |
67 | if( packet->data_start + length >= packet->length ) return ENOMEM; |
68 | memcpy(( void * ) packet + packet->data_start, data, length ); |
68 | memcpy(( void * ) packet + packet->data_start, data, length ); |
69 | if( packet->data_start + length > packet->data_end ){ |
69 | if( packet->data_start + length > packet->data_end ){ |
70 | packet->data_end = packet->data_start + length; |
70 | packet->data_end = packet->data_start + length; |
71 | } |
71 | } |
72 | return EOK; |
72 | return EOK; |
73 | } |
73 | } |
74 | 74 | ||
75 | void * packet_prefix( packet_t packet, size_t length ){ |
75 | void * packet_prefix( packet_t packet, size_t length ){ |
76 | if(( ! packet_is_valid( packet )) || ( packet->data_start - sizeof( struct packet ) - 2 * packet->addr_len < length )) return NULL; |
76 | if(( ! packet_is_valid( packet )) || ( packet->data_start - sizeof( struct packet ) - 2 * packet->addr_len < length )) return NULL; |
77 | packet->data_start -= length; |
77 | packet->data_start -= length; |
78 | return ( void * ) packet + packet->data_start; |
78 | return ( void * ) packet + packet->data_start; |
79 | } |
79 | } |
80 | 80 | ||
81 | void * packet_suffix( packet_t packet, size_t length ){ |
81 | void * packet_suffix( packet_t packet, size_t length ){ |
82 | if(( ! packet_is_valid( packet )) || ( packet->data_end + length >= packet->length )) return NULL; |
82 | if(( ! packet_is_valid( packet )) || ( packet->data_end + length >= packet->length )) return NULL; |
83 | packet->data_end += length; |
83 | packet->data_end += length; |
84 | return ( void * ) packet + packet->data_end - length; |
84 | return ( void * ) packet + packet->data_end - length; |
85 | } |
85 | } |
86 | 86 | ||
87 | int packet_trim( packet_t packet, size_t prefix, size_t suffix ){ |
87 | int packet_trim( packet_t packet, size_t prefix, size_t suffix ){ |
88 | if( ! packet_is_valid( packet )) return EINVAL; |
88 | if( ! packet_is_valid( packet )) return EINVAL; |
89 | if( prefix + suffix > packet->data_end - packet->data_start ) return ENOMEM; |
89 | if( prefix + suffix > packet->data_end - packet->data_start ) return ENOMEM; |
90 | packet->data_start += prefix; |
90 | packet->data_start += prefix; |
91 | packet->data_end -= suffix; |
91 | packet->data_end -= suffix; |
92 | return EOK; |
92 | return EOK; |
93 | } |
93 | } |
94 | 94 | ||
95 | packet_id_t packet_get_id( const packet_t packet ){ |
95 | packet_id_t packet_get_id( const packet_t packet ){ |
96 | return packet_is_valid( packet ) ? packet->packet_id : 0; |
96 | return packet_is_valid( packet ) ? packet->packet_id : 0; |
97 | } |
97 | } |
98 | 98 | ||
99 | int packet_get_addr( const packet_t packet, uint8_t ** src, uint8_t ** dest ){ |
99 | int packet_get_addr( const packet_t packet, uint8_t ** src, uint8_t ** dest ){ |
100 | if( !( packet_is_valid( packet ) && src && dest )) return EINVAL; |
100 | if( !( packet_is_valid( packet ) && src && dest )) return EINVAL; |
101 | if( ! packet->addr_len ) return 0; |
101 | if( ! packet->addr_len ) return 0; |
102 | * src = ( void * ) packet + packet->src_addr; |
102 | * src = ( void * ) packet + packet->src_addr; |
103 | * dest = ( void * ) packet + packet->dest_addr; |
103 | * dest = ( void * ) packet + packet->dest_addr; |
104 | return packet->addr_len; |
104 | return packet->addr_len; |
105 | } |
105 | } |
106 | 106 | ||
107 | size_t packet_get_data_length( const packet_t packet ){ |
107 | size_t packet_get_data_length( const packet_t packet ){ |
108 | if( ! packet_is_valid( packet )) return 0; |
108 | if( ! packet_is_valid( packet )) return 0; |
109 | return packet->data_end - packet->data_start; |
109 | return packet->data_end - packet->data_start; |
110 | } |
110 | } |
111 | 111 | ||
112 | void * packet_get_data( const packet_t packet ){ |
112 | void * packet_get_data( const packet_t packet ){ |
113 | if( ! packet_is_valid( packet )) return NULL; |
113 | if( ! packet_is_valid( packet )) return NULL; |
114 | return ( void * ) packet + packet->data_start; |
114 | return ( void * ) packet + packet->data_start; |
115 | } |
115 | } |
116 | 116 | ||
117 | int packet_set_addr( packet_t packet, const uint8_t * src, const uint8_t * dest, size_t addr_len ){ |
117 | int packet_set_addr( packet_t packet, const uint8_t * src, const uint8_t * dest, size_t addr_len ){ |
118 | size_t padding; |
118 | size_t padding; |
119 | 119 | ||
120 | if( ! packet_is_valid( packet )) return EINVAL; |
120 | if( ! packet_is_valid( packet )) return EINVAL; |
121 | if( packet->addr_len >= addr_len ) return ENOMEM; |
121 | if( packet->addr_len < addr_len ) return ENOMEM; |
122 | padding = packet->addr_len - addr_len; |
122 | padding = packet->addr_len - addr_len; |
123 | if( src ){ |
123 | if( src ){ |
124 | memcpy(( void * ) packet + packet->src_addr, src, addr_len ); |
124 | memcpy(( void * ) packet + packet->src_addr, src, addr_len ); |
125 | bzero(( void * ) packet + packet->src_addr + addr_len, padding ); |
125 | if( padding ) bzero(( void * ) packet + packet->src_addr + addr_len, padding ); |
126 | }else{ |
126 | }else{ |
127 | bzero(( void * ) packet + packet->src_addr + addr_len, packet->addr_len ); |
127 | bzero(( void * ) packet + packet->src_addr + addr_len, packet->addr_len ); |
128 | } |
128 | } |
129 | if( dest ){ |
129 | if( dest ){ |
130 | memcpy(( void * ) packet + packet->dest_addr, dest, addr_len ); |
130 | memcpy(( void * ) packet + packet->dest_addr, dest, addr_len ); |
131 | bzero(( void * ) packet + packet->dest_addr + addr_len, padding ); |
131 | if( padding ) bzero(( void * ) packet + packet->dest_addr + addr_len, padding ); |
132 | }else{ |
132 | }else{ |
133 | bzero(( void * ) packet + packet->dest_addr + addr_len, packet->addr_len ); |
133 | bzero(( void * ) packet + packet->dest_addr + addr_len, packet->addr_len ); |
134 | } |
134 | } |
135 | return EOK; |
135 | return EOK; |
136 | } |
136 | } |
137 | 137 | ||
138 | int packet_translate( int phone, packet_ref packet, packet_id_t packet_id ){ |
138 | int packet_translate( int phone, packet_ref packet, packet_id_t packet_id ){ |
139 | ERROR_DECLARE; |
139 | ERROR_DECLARE; |
140 | 140 | ||
141 | unsigned int size; |
141 | unsigned int size; |
142 | 142 | ||
143 | if( ! packet ) return EINVAL; |
143 | if( ! packet ) return EINVAL; |
144 | * packet = pm_find( packet_id ); |
144 | * packet = pm_find( packet_id ); |
145 | if( * packet ) return EOK; |
145 | if( * packet ) return EOK; |
146 | ERROR_PROPAGATE( async_req_1_1( phone, NET_PACKET_GET_SIZE, packet_id, & size )); |
146 | ERROR_PROPAGATE( async_req_1_1( phone, NET_PACKET_GET_SIZE, packet_id, & size )); |
147 | return packet_return( phone, packet, packet_id, size ); |
147 | return packet_return( phone, packet, packet_id, size ); |
148 | } |
148 | } |
149 | 149 | ||
150 | int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ){ |
150 | int packet_return( int phone, packet_ref packet, packet_id_t packet_id, size_t size ){ |
151 | ERROR_DECLARE; |
151 | ERROR_DECLARE; |
152 | 152 | ||
153 | aid_t message; |
153 | aid_t message; |
154 | ipc_call_t answer; |
154 | ipc_call_t answer; |
155 | ipcarg_t result; |
155 | ipcarg_t result; |
156 | 156 | ||
157 | message = async_send_1( phone, NET_PACKET_GET, packet_id, & answer ); |
157 | message = async_send_1( phone, NET_PACKET_GET, packet_id, & answer ); |
158 | * packet = ( packet_t ) as_get_mappable_page( size ); |
158 | * packet = ( packet_t ) as_get_mappable_page( size ); |
159 | if( ERROR_OCCURRED( ipc_share_in_start_0_0( phone, * packet, size )) |
159 | if( ERROR_OCCURRED( ipc_share_in_start_0_0( phone, * packet, size )) |
160 | || ERROR_OCCURRED( pm_add( * packet ))){ |
160 | || ERROR_OCCURRED( pm_add( * packet ))){ |
161 | munmap( * packet, size ); |
161 | munmap( * packet, size ); |
162 | async_wait_for( message, NULL ); |
162 | async_wait_for( message, NULL ); |
163 | return ERROR_CODE; |
163 | return ERROR_CODE; |
164 | } |
164 | } |
165 | async_wait_for( message, & result ); |
165 | async_wait_for( message, & result ); |
166 | return result; |
166 | return result; |
167 | } |
167 | } |
168 | 168 | ||
169 | packet_t packet_get_4( int phone, size_t max_content, size_t addr_len, size_t max_prefix, size_t max_suffix ){ |
169 | packet_t packet_get_4( int phone, size_t max_content, size_t addr_len, size_t max_prefix, size_t max_suffix ){ |
170 | ERROR_DECLARE; |
170 | ERROR_DECLARE; |
171 | 171 | ||
172 | packet_id_t packet_id; |
172 | packet_id_t packet_id; |
173 | unsigned int size; |
173 | unsigned int size; |
174 | packet_t packet; |
174 | packet_t packet; |
175 | 175 | ||
176 | if( ERROR_OCCURRED( async_req_4_2( phone, NET_PACKET_CREATE_4, max_content, addr_len, max_prefix, max_suffix, & packet_id, & size )) |
176 | if( ERROR_OCCURRED( async_req_4_2( phone, NET_PACKET_CREATE_4, max_content, addr_len, max_prefix, max_suffix, ( ipcarg_t * ) & packet_id, & size )) |
177 | || ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){ |
177 | || ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){ |
178 | return NULL; |
178 | return NULL; |
179 | } |
179 | } |
180 | return packet; |
180 | return packet; |
181 | } |
181 | } |
182 | 182 | ||
183 | packet_t packet_get_1( int phone, size_t content ){ |
183 | packet_t packet_get_1( int phone, size_t content ){ |
184 | ERROR_DECLARE; |
184 | ERROR_DECLARE; |
185 | 185 | ||
186 | packet_id_t packet_id; |
186 | packet_id_t packet_id; |
187 | unsigned int size; |
187 | unsigned int size; |
188 | packet_t packet; |
188 | packet_t packet; |
189 | 189 | ||
190 | if( ERROR_OCCURRED( async_req_1_2( phone, NET_PACKET_CREATE_1, content, & packet_id, & size )) |
190 | if( ERROR_OCCURRED( async_req_1_2( phone, NET_PACKET_CREATE_1, content, ( ipcarg_t * ) & packet_id, & size )) |
191 | || ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){ |
191 | || ERROR_OCCURRED( packet_return( phone, & packet, packet_id, size ))){ |
192 | return NULL; |
192 | return NULL; |
193 | } |
193 | } |
194 | return packet; |
194 | return packet; |
195 | } |
195 | } |
196 | 196 | ||
197 | void pq_release( int phone, packet_id_t packet_id ){ |
197 | void pq_release( int phone, packet_id_t packet_id ){ |
198 | async_msg_1( phone, NET_PACKET_RELEASE, packet_id ); |
198 | async_msg_1( phone, NET_PACKET_RELEASE, packet_id ); |
199 | } |
199 | } |
200 | 200 | ||
201 | /** @} |
201 | /** @} |
202 | */ |
202 | */ |
203 | 203 |