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d06d03db MD |
1 | /* |
2 | * Common Trace Format | |
3 | * | |
4 | * Array format access functions. | |
5 | * | |
64fa3fec MD |
6 | * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation |
7 | * | |
8 | * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
d06d03db | 9 | * |
ccd7e1c8 MD |
10 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
11 | * of this software and associated documentation files (the "Software"), to deal | |
12 | * in the Software without restriction, including without limitation the rights | |
13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
14 | * copies of the Software, and to permit persons to whom the Software is | |
15 | * furnished to do so, subject to the following conditions: | |
d06d03db | 16 | * |
ccd7e1c8 MD |
17 | * The above copyright notice and this permission notice shall be included in |
18 | * all copies or substantial portions of the Software. | |
d06d03db MD |
19 | */ |
20 | ||
21 | #include <babeltrace/ctf/types.h> | |
22 | ||
81dee1bb | 23 | int ctf_array_read(struct stream_pos *ppos, struct definition *definition) |
d06d03db | 24 | { |
81dee1bb MD |
25 | struct definition_array *array_definition = |
26 | container_of(definition, struct definition_array, p); | |
27 | struct declaration_array *array_declaration = | |
28 | array_definition->declaration; | |
29 | struct declaration *elem = array_declaration->elem; | |
30 | struct ctf_stream_pos *pos = | |
31 | container_of(ppos, struct ctf_stream_pos, parent); | |
32 | ||
33 | if (elem->id == CTF_TYPE_INTEGER) { | |
34 | struct declaration_integer *integer_declaration = | |
35 | container_of(elem, struct declaration_integer, p); | |
36 | ||
37 | if (integer_declaration->encoding == CTF_STRING_UTF8 | |
38 | || integer_declaration->encoding == CTF_STRING_ASCII) { | |
39 | ||
40 | if (integer_declaration->len == CHAR_BIT | |
41 | && integer_declaration->p.alignment == CHAR_BIT) { | |
42 | ||
43 | ctf_align_pos(pos, integer_declaration->p.alignment); | |
44 | if (!ctf_pos_access_ok(pos, array_declaration->len * CHAR_BIT)) | |
45 | return -EFAULT; | |
46 | ||
47 | g_string_assign(array_definition->string, ""); | |
48 | g_string_insert_len(array_definition->string, | |
49 | 0, (char *) ctf_get_pos_addr(pos), | |
50 | array_declaration->len); | |
51 | ctf_move_pos(pos, array_declaration->len * CHAR_BIT); | |
52 | return 0; | |
53 | } | |
54 | } | |
55 | } | |
56 | return array_rw(ppos, definition); | |
57 | } | |
58 | ||
59 | int ctf_array_write(struct stream_pos *ppos, struct definition *definition) | |
60 | { | |
61 | struct definition_array *array_definition = | |
62 | container_of(definition, struct definition_array, p); | |
63 | struct declaration_array *array_declaration = | |
64 | array_definition->declaration; | |
65 | struct declaration *elem = array_declaration->elem; | |
66 | struct ctf_stream_pos *pos = | |
67 | container_of(ppos, struct ctf_stream_pos, parent); | |
68 | ||
69 | if (elem->id == CTF_TYPE_INTEGER) { | |
70 | struct declaration_integer *integer_declaration = | |
71 | container_of(elem, struct declaration_integer, p); | |
72 | ||
73 | if (integer_declaration->encoding == CTF_STRING_UTF8 | |
74 | || integer_declaration->encoding == CTF_STRING_ASCII) { | |
75 | ||
76 | if (integer_declaration->len == CHAR_BIT | |
77 | && integer_declaration->p.alignment == CHAR_BIT) { | |
78 | ||
79 | ctf_align_pos(pos, integer_declaration->p.alignment); | |
80 | if (!ctf_pos_access_ok(pos, array_declaration->len * CHAR_BIT)) | |
81 | return -EFAULT; | |
82 | ||
83 | memcpy((char *) ctf_get_pos_addr(pos), | |
84 | array_definition->string->str, | |
85 | array_declaration->len); | |
86 | ctf_move_pos(pos, array_declaration->len * CHAR_BIT); | |
87 | return 0; | |
88 | } | |
89 | } | |
90 | } | |
91 | return array_rw(ppos, definition); | |
d06d03db | 92 | } |