4 * Strings read/write functions.
6 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
21 #include <babeltrace/babeltrace-internal.h>
22 #include <babeltrace/ctf/types.h>
23 #include <limits.h> /* C99 limits */
26 int ctf_string_read(struct stream_pos
*ppos
, struct definition
*definition
)
28 struct definition_string
*string_definition
=
29 container_of(definition
, struct definition_string
, p
);
30 const struct declaration_string
*string_declaration
=
31 string_definition
->declaration
;
32 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
37 ctf_align_pos(pos
, string_declaration
->p
.alignment
);
39 srcaddr
= ctf_get_pos_addr(pos
);
40 if (pos
->offset
== EOF
)
43 max_len
= pos
->packet_size
- pos
->offset
- 1;
46 len
= strnlen(srcaddr
, max_len
) + 1; /* Add \0 */
47 /* Truncated string, unexpected. Trace probably corrupted. */
48 if (srcaddr
[len
- 1] != '\0')
51 if (string_definition
->alloc_len
< len
) {
52 string_definition
->value
=
53 g_realloc(string_definition
->value
, len
);
54 string_definition
->alloc_len
= len
;
56 printf_debug("CTF string read %s\n", srcaddr
);
57 memcpy(string_definition
->value
, srcaddr
, len
);
58 string_definition
->len
= len
;
59 ctf_move_pos(pos
, len
* CHAR_BIT
);
63 int ctf_string_write(struct stream_pos
*ppos
,
64 struct definition
*definition
)
66 struct definition_string
*string_definition
=
67 container_of(definition
, struct definition_string
, p
);
68 const struct declaration_string
*string_declaration
=
69 string_definition
->declaration
;
70 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
74 ctf_align_pos(pos
, string_declaration
->p
.alignment
);
75 assert(string_definition
->value
!= NULL
);
76 len
= string_definition
->len
;
78 if (!ctf_pos_access_ok(pos
, len
))
83 destaddr
= ctf_get_pos_addr(pos
);
84 memcpy(destaddr
, string_definition
->value
, len
);
86 ctf_move_pos(pos
, len
* CHAR_BIT
);
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