1 | cdef extern from "errno.h": |
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2 | int errno |
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3 | |
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4 | cdef extern from "stdlib.h": |
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5 | ctypedef long size_t |
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6 | |
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7 | cdef extern from "sys/types.h": |
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8 | ctypedef long pid_t |
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9 | |
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10 | cdef extern from "sys/socket.h": |
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11 | ctypedef long socklen_t |
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12 | struct sockaddr: |
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13 | pass |
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14 | |
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15 | int socket(int, int, int) |
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16 | int bind(int, sockaddr *, socklen_t) |
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17 | size_t send(int, void *, size_t, int) |
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18 | size_t recvfrom(int, void *, size_t, int, sockaddr *, socklen_t *) |
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19 | |
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20 | enum: |
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21 | SOCK_DGRAM |
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22 | PF_NETLINK |
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23 | AF_NETLINK |
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24 | |
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25 | cdef extern from "linux/netlink.h": |
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26 | enum: |
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27 | NETLINK_CONNECTOR |
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28 | NLMSG_DONE |
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29 | struct sockaddr_nl: |
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30 | unsigned long nl_family |
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31 | unsigned long nl_pad |
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32 | unsigned long nl_pid |
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33 | unsigned long nl_groups |
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34 | struct nlmsghdr: |
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35 | long nlmsg_len |
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36 | long nlmsg_type |
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37 | long nlmsg_flags |
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38 | long nlmsg_seq |
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39 | long nlmsg_pid |
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40 | long NLMSG_LENGTH(long) |
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41 | void * NLMSG_DATA(void *) |
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42 | |
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43 | cdef extern from "linux/connector.h": |
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44 | enum: |
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45 | CN_IDX_PROC |
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46 | CN_VAL_PROC |
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47 | struct cb_id: |
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48 | long idx |
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49 | long val |
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50 | struct cn_msg: |
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51 | cb_id id |
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52 | long seq |
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53 | long ack |
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54 | long len |
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55 | long flags |
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56 | char data[0] |
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57 | |
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58 | cdef extern from "linux/cn_proc.h": |
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59 | enum proc_cn_mcast_op: |
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60 | PROC_CN_MCAST_LISTEN |
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61 | PROC_CN_MCAST_IGNORE |
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62 | |
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63 | enum what: |
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64 | C_PROC_EVENT_NONE "PROC_EVENT_NONE" |
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65 | C_PROC_EVENT_FORK "PROC_EVENT_FORK" |
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66 | C_PROC_EVENT_EXEC "PROC_EVENT_EXEC" |
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67 | C_PROC_EVENT_UID "PROC_EVENT_UID" |
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68 | C_PROC_EVENT_GID "PROC_EVENT_GID" |
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69 | C_PROC_EVENT_EXIT "PROC_EVENT_EXIT" |
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70 | |
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71 | struct ack_proc_event: |
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72 | long err |
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73 | struct fork_proc_event: |
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74 | pid_t parent_pid |
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75 | pid_t parent_tgid |
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76 | pid_t child_pid |
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77 | pid_t child_tgid |
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78 | struct exec_proc_event: |
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79 | pid_t process_pid |
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80 | pid_t process_tgid |
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81 | union id_proc_event_r: |
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82 | long ruid |
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83 | long rgid |
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84 | union id_proc_event_e: |
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85 | long euid |
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86 | long egid |
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87 | struct id_proc_event: |
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88 | pid_t process_pid |
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89 | pid_t process_tgid |
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90 | id_proc_event_r r |
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91 | id_proc_event_e e |
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92 | struct exit_proc_event: |
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93 | pid_t process_pid |
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94 | pid_t process_tgid |
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95 | long exit_code |
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96 | long exit_signal |
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97 | |
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98 | union event_data: |
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99 | ack_proc_event ack |
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100 | fork_proc_event fork |
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101 | exec_proc_event exec_ "exec" |
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102 | id_proc_event id_ "id" |
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103 | exit_proc_event exit_ "exit" |
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104 | |
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105 | struct proc_event: |
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106 | what what |
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107 | long cpu |
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108 | long timestamp_ns |
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109 | event_data event_data |
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110 | |
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111 | cdef extern from "string.h": |
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112 | char * strerror(int) |
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113 | |
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114 | cdef extern from "unistd.h": |
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115 | pid_t getpid() |
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116 | int close(int) |
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117 | |
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118 | |
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119 | PROC_EVENT_NONE = C_PROC_EVENT_NONE |
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120 | PROC_EVENT_FORK = C_PROC_EVENT_FORK |
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121 | PROC_EVENT_EXEC = C_PROC_EVENT_EXEC |
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122 | PROC_EVENT_UID = C_PROC_EVENT_UID |
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123 | PROC_EVENT_GID = C_PROC_EVENT_GID |
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124 | PROC_EVENT_EXIT = C_PROC_EVENT_EXIT |
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125 | |
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126 | |
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127 | cdef class ProcEvent: |
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128 | cdef public long what |
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129 | cdef public long cpu |
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130 | cdef public long timestamp_ns |
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131 | |
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132 | |
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133 | cdef class AckProcEvent(ProcEvent): |
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134 | cdef public long err |
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135 | |
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136 | def __repr__(self): |
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137 | return "<AckProcEvent err=%d>" % self.err |
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138 | |
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139 | |
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140 | cdef class ForkProcEvent(ProcEvent): |
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141 | cdef public long parent_pid |
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142 | cdef public long parent_tgid |
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143 | cdef public long child_pid |
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144 | cdef public long child_tgid |
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145 | |
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146 | def __repr__(self): |
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147 | return "<ForkProcEvent ppid=%d ptgid=%d pid=%d tgid=%d>" % ( |
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148 | self.parent_pid, |
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149 | self.parent_tgid, |
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150 | self.child_pid, |
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151 | self.child_tgid) |
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152 | |
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153 | |
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154 | cdef class ExecProcEvent(ProcEvent): |
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155 | cdef public long process_pid |
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156 | cdef public long process_tgid |
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157 | |
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158 | def __repr__(self): |
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159 | return "<ExecProcEvent pid=%d tgid=%d>" % ( |
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160 | self.process_pid, |
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161 | self.process_tgid) |
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162 | |
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163 | |
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164 | cdef class UidProcEvent(ProcEvent): |
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165 | cdef public long process_pid |
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166 | cdef public long process_tgid |
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167 | cdef public long ruid |
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168 | cdef public long euid |
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169 | |
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170 | def __repr__(self): |
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171 | return "<UidProcEvent pid=%d tgid=%d ruid=%d euid=%d>" % ( |
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172 | self.process_pid, |
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173 | self.process_tgid, |
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174 | self.ruid, |
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175 | self.euid) |
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176 | |
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177 | |
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178 | cdef class GidProcEvent(ProcEvent): |
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179 | cdef public long process_pid |
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180 | cdef public long process_tgid |
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181 | cdef public long rgid |
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182 | cdef public long egid |
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183 | |
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184 | def __repr__(self): |
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185 | return "<GidProcEvent pid=%d tgid=%d rgid=%d egid=%d>" % ( |
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186 | self.process_pid, |
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187 | self.process_tgid, |
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188 | self.rgid, |
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189 | self.egid) |
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190 | |
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191 | |
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192 | cdef class ExitProcEvent(ProcEvent): |
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193 | cdef public long process_pid |
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194 | cdef public long process_tgid |
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195 | cdef public long exit_code |
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196 | cdef public long exit_signal |
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197 | |
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198 | def __repr__(self): |
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199 | return "<ExitProcEvent pid=%d tgid=%d code=%d signal=%d>" % ( |
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200 | self.process_pid, |
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201 | self.process_tgid, |
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202 | self.exit_code, |
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203 | self.exit_signal) |
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204 | |
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205 | |
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206 | cdef class UnknownProcEvent(ProcEvent): |
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207 | def __repr__(self): |
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208 | return "<UnknownProcEvent what=%d>" % self.what |
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209 | |
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210 | |
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211 | cdef class Connector: |
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212 | cdef int sock |
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213 | cdef public object closed |
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214 | |
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215 | def __cinit__(self): |
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216 | self.closed = False |
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217 | |
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218 | cdef int flags |
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219 | cdef sockaddr_nl my_addr |
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220 | cdef char buf[4096] |
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221 | cdef nlmsghdr *nl_hdr |
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222 | cdef cn_msg *cn_hdr |
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223 | cdef proc_cn_mcast_op *mcop_msg |
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224 | |
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225 | self.sock = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR) |
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226 | |
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227 | my_addr.nl_family = AF_NETLINK |
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228 | my_addr.nl_groups = CN_IDX_PROC |
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229 | my_addr.nl_pid = getpid() |
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230 | |
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231 | if bind(self.sock, <sockaddr *>&my_addr, sizeof(my_addr)) < 0: |
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232 | raise IOError(errno, strerror(errno)) |
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233 | |
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234 | nl_hdr = <nlmsghdr *>buf |
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235 | nl_hdr.nlmsg_len = NLMSG_LENGTH(sizeof(cn_msg) + sizeof(proc_cn_mcast_op)) |
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236 | nl_hdr.nlmsg_type = NLMSG_DONE |
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237 | nl_hdr.nlmsg_flags = 0 |
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238 | nl_hdr.nlmsg_seq = 0 |
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239 | nl_hdr.nlmsg_pid = getpid() |
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240 | |
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241 | cn_hdr = <cn_msg *>NLMSG_DATA(nl_hdr) |
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242 | cn_hdr.id.idx = CN_IDX_PROC |
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243 | cn_hdr.id.val = CN_VAL_PROC |
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244 | cn_hdr.seq = 0 |
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245 | cn_hdr.ack = 0 |
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246 | cn_hdr.len = sizeof(proc_cn_mcast_op) |
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247 | |
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248 | mcop_msg = <proc_cn_mcast_op *>cn_hdr.data |
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249 | mcop_msg[0] = PROC_CN_MCAST_LISTEN |
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250 | |
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251 | if send(self.sock, nl_hdr, nl_hdr.nlmsg_len, 0) != nl_hdr.nlmsg_len: |
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252 | raise IOError(errno, strerror(errno)) |
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253 | |
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254 | def __dealloc__(self): |
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255 | if not self.closed: |
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256 | close(self.sock) |
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257 | |
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258 | def fileno(self): |
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259 | return self.sock |
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260 | |
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261 | def close(self): |
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262 | if not self.closed: |
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263 | close(self.sock) |
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264 | self.closed = True |
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265 | |
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266 | def recv_event(self): |
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267 | cdef char buf[4096] |
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268 | cdef sockaddr_nl from_addr |
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269 | cdef socklen_t s |
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270 | cdef proc_event *ev |
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271 | cdef object ret |
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272 | |
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273 | s = sizeof(from_addr) |
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274 | |
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275 | while True: |
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276 | if recvfrom(self.sock, buf, sizeof(buf), 0, |
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277 | <sockaddr *>&from_addr, &s) == -1: |
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278 | raise IOError(errno, strerror(errno)) |
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279 | |
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280 | if from_addr.nl_pid != 0: |
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281 | # Ignore messages that don't come from the kernel |
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282 | continue |
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283 | |
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284 | ev = <proc_event *>((<cn_msg *>NLMSG_DATA(buf)).data) |
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285 | |
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286 | if ev.what == PROC_EVENT_FORK: |
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287 | ret = ForkProcEvent() |
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288 | ret.parent_pid = ev.event_data.fork.parent_pid |
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289 | ret.parent_tgid = ev.event_data.fork.parent_tgid |
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290 | ret.child_pid = ev.event_data.fork.child_pid |
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291 | ret.child_tgid = ev.event_data.fork.child_tgid |
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292 | elif ev.what == PROC_EVENT_EXEC: |
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293 | ret = ExecProcEvent() |
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294 | ret.process_pid = ev.event_data.exec_.process_pid |
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295 | ret.process_tgid = ev.event_data.exec_.process_tgid |
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296 | elif ev.what == PROC_EVENT_UID: |
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297 | ret = UidProcEvent() |
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298 | ret.process_pid = ev.event_data.id_.process_pid |
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299 | ret.process_tgid = ev.event_data.id_.process_tgid |
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300 | ret.ruid = ev.event_data.id_.r.ruid |
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301 | ret.euid = ev.event_data.id_.e.euid |
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302 | elif ev.what == PROC_EVENT_GID: |
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303 | ret = GidProcEvent() |
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304 | ret.process_pid = ev.event_data.id_.process_pid |
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305 | ret.process_tgid = ev.event_data.id_.process_tgid |
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306 | ret.rgid = ev.event_data.id_.r.rgid |
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307 | ret.egid = ev.event_data.id_.e.egid |
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308 | elif ev.what == PROC_EVENT_EXIT: |
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309 | ret = ExitProcEvent() |
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310 | ret.process_pid = ev.event_data.exit_.process_pid |
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311 | ret.process_tgid = ev.event_data.exit_.process_tgid |
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312 | ret.exit_code = ev.event_data.exit_.exit_code |
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313 | ret.exit_signal = ev.event_data.exit_.exit_signal |
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314 | else: |
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315 | ret = UnknownProcEvent() |
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316 | |
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317 | ret.what = ev.what |
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318 | ret.cpu = ev.cpu |
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319 | ret.timestamp_ns = ev.timestamp_ns |
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320 | |
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321 | return ret |
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