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1831ae68 FD |
1 | /* |
2 | * Copyright (C) 2019 - Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com> | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, | |
6 | * as published by the Free Software Foundation. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
11 | * for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public License | |
14 | * along with this library; if not, write to the Free Software Foundation, | |
15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
18 | #include <lttng/event-rule/event-rule-internal.h> | |
19 | #include <lttng/event-rule/kretprobe-internal.h> | |
20 | #include <common/macros.h> | |
21 | #include <common/error.h> | |
22 | #include <common/runas.h> | |
23 | #include <assert.h> | |
24 | ||
25 | #define IS_KRETPROBE_EVENT_RULE(rule) ( \ | |
26 | lttng_event_rule_get_type(rule) == LTTNG_EVENT_RULE_TYPE_KRETPROBE \ | |
27 | ) | |
28 | ||
29 | static | |
30 | void lttng_event_rule_kretprobe_destroy(struct lttng_event_rule *rule) | |
31 | { | |
32 | struct lttng_event_rule_kretprobe *kretprobe; | |
33 | ||
34 | kretprobe = container_of(rule, struct lttng_event_rule_kretprobe, | |
35 | parent); | |
36 | ||
37 | /* | |
38 | * TODO | |
39 | */ | |
40 | free(kretprobe); | |
41 | } | |
42 | ||
43 | static | |
44 | bool lttng_event_rule_kretprobe_validate( | |
45 | const struct lttng_event_rule *rule) | |
46 | { | |
47 | /* TODO */ | |
48 | return false; | |
49 | } | |
50 | ||
51 | static | |
52 | int lttng_event_rule_kretprobe_serialize( | |
53 | const struct lttng_event_rule *rule, | |
54 | struct lttng_dynamic_buffer *buf, int *fd_to_send) | |
55 | { | |
56 | /* TODO */ | |
57 | return -1; | |
58 | } | |
59 | ||
60 | static | |
61 | bool lttng_event_rule_kretprobe_is_equal(const struct lttng_event_rule *_a, | |
62 | const struct lttng_event_rule *_b) | |
63 | { | |
64 | /* TODO */ | |
65 | return false; | |
66 | } | |
67 | ||
68 | static | |
69 | enum lttng_error_code lttng_event_rule_kretprobe_populate(struct lttng_event_rule *rule, uid_t uid, gid_t gid) | |
70 | { | |
71 | /* Nothing to do */ | |
72 | return LTTNG_OK; | |
73 | } | |
74 | ||
75 | static const char *lttng_event_rule_kretprobe_get_filter( | |
76 | const struct lttng_event_rule *rule) | |
77 | { | |
78 | /* Not supported */ | |
79 | return NULL; | |
80 | } | |
81 | ||
82 | static const struct lttng_filter_bytecode * | |
83 | lttng_event_rule_kretprobe_get_filter_bytecode( | |
84 | const struct lttng_event_rule *rule) | |
85 | { | |
86 | /* Not supported */ | |
87 | return NULL; | |
88 | } | |
89 | ||
90 | static struct lttng_event_exclusion * | |
91 | lttng_event_rule_kretprobe_generate_exclusions(struct lttng_event_rule *rule) | |
92 | { | |
93 | /* Not supported */ | |
94 | return NULL; | |
95 | } | |
96 | ||
97 | struct lttng_event_rule *lttng_event_rule_kretprobe_create() | |
98 | { | |
99 | struct lttng_event_rule_kretprobe *rule; | |
100 | ||
101 | rule = zmalloc(sizeof(struct lttng_event_rule_kretprobe)); | |
102 | if (!rule) { | |
103 | return NULL; | |
104 | } | |
105 | ||
106 | lttng_event_rule_init(&rule->parent, LTTNG_EVENT_RULE_TYPE_KRETPROBE); | |
107 | rule->parent.validate = lttng_event_rule_kretprobe_validate; | |
108 | rule->parent.serialize = lttng_event_rule_kretprobe_serialize; | |
109 | rule->parent.equal = lttng_event_rule_kretprobe_is_equal; | |
110 | rule->parent.destroy = lttng_event_rule_kretprobe_destroy; | |
111 | rule->parent.populate = lttng_event_rule_kretprobe_populate; | |
112 | rule->parent.get_filter = lttng_event_rule_kretprobe_get_filter; | |
113 | rule->parent.get_filter_bytecode = lttng_event_rule_kretprobe_get_filter_bytecode; | |
114 | rule->parent.generate_exclusions = lttng_event_rule_kretprobe_generate_exclusions; | |
115 | return &rule->parent; | |
116 | } | |
117 | ||
118 | LTTNG_HIDDEN | |
119 | ssize_t lttng_event_rule_kretprobe_create_from_buffer( | |
120 | const struct lttng_buffer_view *view, | |
121 | struct lttng_event_rule **_event_rule) | |
122 | { | |
123 | /* TODO */ | |
124 | return -1; | |
125 | } | |
126 | ||
127 | enum lttng_event_rule_status lttng_event_rule_kretprobe_set_source( | |
128 | struct lttng_event_rule *rule, const char *source) | |
129 | { | |
130 | return LTTNG_EVENT_RULE_STATUS_UNSUPPORTED; | |
131 | } | |
132 | ||
133 | enum lttng_event_rule_status lttng_event_rule_kretprobe_set_name( | |
134 | struct lttng_event_rule *rule, const char *name) | |
135 | { | |
136 | return LTTNG_EVENT_RULE_STATUS_UNSUPPORTED; | |
137 | } | |
138 | ||
139 | enum lttng_event_rule_status lttng_event_rule_kretprobe_get_name( | |
140 | const struct lttng_event_rule *rule, const char **name) | |
141 | { | |
142 | return LTTNG_EVENT_RULE_STATUS_UNSUPPORTED; | |
143 | } | |
144 | ||
145 | LTTNG_HIDDEN | |
146 | uint64_t lttng_event_rule_kretprobe_get_address( | |
147 | const struct lttng_event_rule *rule) | |
148 | { | |
149 | assert("Not implemented" && 0); | |
150 | } | |
151 | ||
152 | LTTNG_HIDDEN | |
153 | uint64_t lttng_event_rule_kretprobe_get_offset( | |
154 | const struct lttng_event_rule *rule) | |
155 | { | |
156 | assert("Not implemented" && 0); | |
157 | } | |
158 | ||
159 | LTTNG_HIDDEN | |
160 | const char *lttng_event_rule_kretprobe_get_symbol_name( | |
161 | const struct lttng_event_rule *rule) | |
162 | { | |
163 | assert("Not implemented" && 0); | |
164 | } |