| 1 | /* |
| 2 | * Copyright (C) 2019 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> |
| 3 | * |
| 4 | * SPDX-License-Identifier: LGPL-2.1-only |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #include <assert.h> |
| 9 | #include <common/error.h> |
| 10 | #include <common/macros.h> |
| 11 | #include <common/runas.h> |
| 12 | #include <lttng/event-rule/event-rule-internal.h> |
| 13 | #include <lttng/event-rule/kretprobe-internal.h> |
| 14 | |
| 15 | #define IS_KRETPROBE_EVENT_RULE(rule) \ |
| 16 | (lttng_event_rule_get_type(rule) == LTTNG_EVENT_RULE_TYPE_KRETPROBE) |
| 17 | |
| 18 | static void lttng_event_rule_kretprobe_destroy(struct lttng_event_rule *rule) |
| 19 | { |
| 20 | struct lttng_event_rule_kretprobe *kretprobe; |
| 21 | |
| 22 | kretprobe = container_of( |
| 23 | rule, struct lttng_event_rule_kretprobe, parent); |
| 24 | |
| 25 | /* |
| 26 | * TODO |
| 27 | */ |
| 28 | free(kretprobe); |
| 29 | } |
| 30 | |
| 31 | static bool lttng_event_rule_kretprobe_validate( |
| 32 | const struct lttng_event_rule *rule) |
| 33 | { |
| 34 | /* TODO */ |
| 35 | return false; |
| 36 | } |
| 37 | |
| 38 | static int lttng_event_rule_kretprobe_serialize( |
| 39 | const struct lttng_event_rule *rule, |
| 40 | struct lttng_dynamic_buffer *buf, |
| 41 | int *fd_to_send) |
| 42 | { |
| 43 | /* TODO */ |
| 44 | return -1; |
| 45 | } |
| 46 | |
| 47 | static bool lttng_event_rule_kretprobe_is_equal( |
| 48 | const struct lttng_event_rule *_a, |
| 49 | const struct lttng_event_rule *_b) |
| 50 | { |
| 51 | /* TODO */ |
| 52 | return false; |
| 53 | } |
| 54 | |
| 55 | static enum lttng_error_code lttng_event_rule_kretprobe_populate( |
| 56 | struct lttng_event_rule *rule, uid_t uid, gid_t gid) |
| 57 | { |
| 58 | /* Nothing to do */ |
| 59 | return LTTNG_OK; |
| 60 | } |
| 61 | |
| 62 | static const char *lttng_event_rule_kretprobe_get_filter( |
| 63 | const struct lttng_event_rule *rule) |
| 64 | { |
| 65 | /* Not supported */ |
| 66 | return NULL; |
| 67 | } |
| 68 | |
| 69 | static const struct lttng_bytecode * |
| 70 | lttng_event_rule_kretprobe_get_filter_bytecode( |
| 71 | const struct lttng_event_rule *rule) |
| 72 | { |
| 73 | /* Not supported */ |
| 74 | return NULL; |
| 75 | } |
| 76 | |
| 77 | static struct lttng_event_exclusion * |
| 78 | lttng_event_rule_kretprobe_generate_exclusions(struct lttng_event_rule *rule) |
| 79 | { |
| 80 | /* Not supported */ |
| 81 | return NULL; |
| 82 | } |
| 83 | |
| 84 | struct lttng_event_rule *lttng_event_rule_kretprobe_create() |
| 85 | { |
| 86 | struct lttng_event_rule_kretprobe *rule; |
| 87 | |
| 88 | rule = zmalloc(sizeof(struct lttng_event_rule_kretprobe)); |
| 89 | if (!rule) { |
| 90 | return NULL; |
| 91 | } |
| 92 | |
| 93 | lttng_event_rule_init(&rule->parent, LTTNG_EVENT_RULE_TYPE_KRETPROBE); |
| 94 | rule->parent.validate = lttng_event_rule_kretprobe_validate; |
| 95 | rule->parent.serialize = lttng_event_rule_kretprobe_serialize; |
| 96 | rule->parent.equal = lttng_event_rule_kretprobe_is_equal; |
| 97 | rule->parent.destroy = lttng_event_rule_kretprobe_destroy; |
| 98 | rule->parent.populate = lttng_event_rule_kretprobe_populate; |
| 99 | rule->parent.get_filter = lttng_event_rule_kretprobe_get_filter; |
| 100 | rule->parent.get_filter_bytecode = |
| 101 | lttng_event_rule_kretprobe_get_filter_bytecode; |
| 102 | rule->parent.generate_exclusions = |
| 103 | lttng_event_rule_kretprobe_generate_exclusions; |
| 104 | return &rule->parent; |
| 105 | } |
| 106 | |
| 107 | LTTNG_HIDDEN |
| 108 | ssize_t lttng_event_rule_kretprobe_create_from_buffer( |
| 109 | const struct lttng_buffer_view *view, |
| 110 | struct lttng_event_rule **_event_rule) |
| 111 | { |
| 112 | /* TODO */ |
| 113 | return -1; |
| 114 | } |
| 115 | |
| 116 | enum lttng_event_rule_status lttng_event_rule_kretprobe_set_source( |
| 117 | struct lttng_event_rule *rule, const char *source) |
| 118 | { |
| 119 | return LTTNG_EVENT_RULE_STATUS_UNSUPPORTED; |
| 120 | } |
| 121 | |
| 122 | enum lttng_event_rule_status lttng_event_rule_kretprobe_set_name( |
| 123 | struct lttng_event_rule *rule, const char *name) |
| 124 | { |
| 125 | return LTTNG_EVENT_RULE_STATUS_UNSUPPORTED; |
| 126 | } |
| 127 | |
| 128 | enum lttng_event_rule_status lttng_event_rule_kretprobe_get_name( |
| 129 | const struct lttng_event_rule *rule, const char **name) |
| 130 | { |
| 131 | return LTTNG_EVENT_RULE_STATUS_UNSUPPORTED; |
| 132 | } |
| 133 | |
| 134 | LTTNG_HIDDEN |
| 135 | uint64_t lttng_event_rule_kretprobe_get_address( |
| 136 | const struct lttng_event_rule *rule) |
| 137 | { |
| 138 | assert("Not implemented" && 0); |
| 139 | } |
| 140 | |
| 141 | LTTNG_HIDDEN |
| 142 | uint64_t lttng_event_rule_kretprobe_get_offset( |
| 143 | const struct lttng_event_rule *rule) |
| 144 | { |
| 145 | assert("Not implemented" && 0); |
| 146 | } |
| 147 | |
| 148 | LTTNG_HIDDEN |
| 149 | const char *lttng_event_rule_kretprobe_get_symbol_name( |
| 150 | const struct lttng_event_rule *rule) |
| 151 | { |
| 152 | assert("Not implemented" && 0); |
| 153 | } |