4 * Strings read/write functions.
6 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
8 * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
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14 * copies of the Software, and to permit persons to whom the Software is
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17 * The above copyright notice and this permission notice shall be included in
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21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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29 #include <babeltrace/babeltrace-internal.h>
30 #include <babeltrace/ctf/types.h>
31 #include <limits.h> /* C99 limits */
34 int ctf_string_read(struct bt_stream_pos
*ppos
, struct bt_definition
*definition
)
36 struct definition_string
*string_definition
=
37 container_of(definition
, struct definition_string
, p
);
38 const struct declaration_string
*string_declaration
=
39 string_definition
->declaration
;
40 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
45 ctf_align_pos(pos
, string_declaration
->p
.alignment
);
47 srcaddr
= ctf_get_pos_addr(pos
);
48 if (pos
->offset
== EOF
)
51 max_len
= pos
->packet_size
- pos
->offset
- 1;
54 len
= strnlen(srcaddr
, max_len
) + 1; /* Add \0 */
55 /* Truncated string, unexpected. Trace probably corrupted. */
56 if (srcaddr
[len
- 1] != '\0')
59 if (string_definition
->alloc_len
< len
) {
60 string_definition
->value
=
61 g_realloc(string_definition
->value
, len
);
62 string_definition
->alloc_len
= len
;
64 printf_debug("CTF string read %s\n", srcaddr
);
65 memcpy(string_definition
->value
, srcaddr
, len
);
66 string_definition
->len
= len
;
67 ctf_move_pos(pos
, len
* CHAR_BIT
);
71 int ctf_string_write(struct bt_stream_pos
*ppos
,
72 struct bt_definition
*definition
)
74 struct definition_string
*string_definition
=
75 container_of(definition
, struct definition_string
, p
);
76 const struct declaration_string
*string_declaration
=
77 string_definition
->declaration
;
78 struct ctf_stream_pos
*pos
= ctf_pos(ppos
);
82 ctf_align_pos(pos
, string_declaration
->p
.alignment
);
83 assert(string_definition
->value
!= NULL
);
84 len
= string_definition
->len
;
86 if (!ctf_pos_access_ok(pos
, len
))
91 destaddr
= ctf_get_pos_addr(pos
);
92 memcpy(destaddr
, string_definition
->value
, len
);
94 ctf_move_pos(pos
, len
* CHAR_BIT
);
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