 | | If the value of si_code is less than or equal to 0, then the signal was generated by a user process (using one of the functions kill, _lwp_kill, sigsend, abort, or raise). If this is the case, then the si_pid element of the structure will contain the process ID of the process that sent the signal, and the si_uid element will contain the user ID of the process that sent the signal. When si_code is less than or equal to 0, it will contain one of the following values: | |
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