55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
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* Low-level extraction code to overcome rust's libc not having the best access
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* to siginfo_t details.
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*/
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#include <stdbool.h>
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#include <signal.h>
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#include <stdint.h>
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struct Const {
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int native;
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// The signal this applies to, or -1 if it applies to anything.
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int signal;
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uint8_t translated;
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};
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// Warning: must be in sync with the rust source code
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struct Const consts[] = {
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#ifdef SI_KERNEL
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{ SI_KERNEL, -1, 1 },
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#endif
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{ SI_USER, -1, 2 },
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#ifdef SI_TKILL
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{ SI_TKILL, -1, 3 },
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#endif
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{ SI_QUEUE, -1, 4 },
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{ SI_MESGQ, -1, 5 },
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{ CLD_EXITED, SIGCHLD, 6 },
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{ CLD_KILLED, SIGCHLD, 7 },
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{ CLD_DUMPED, SIGCHLD, 8 },
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{ CLD_TRAPPED, SIGCHLD, 9 },
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{ CLD_STOPPED, SIGCHLD, 10 },
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{ CLD_CONTINUED, SIGCHLD, 11 },
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};
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uint8_t sighook_signal_cause(const siginfo_t *info) {
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const size_t const_len = sizeof consts / sizeof *consts;
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size_t i;
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for (i = 0; i < const_len; i ++) {
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if (
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consts[i].native == info->si_code &&
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(consts[i].signal == -1 || consts[i].signal == info->si_signo)
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) {
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return consts[i].translated;
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}
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}
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return 0; // The "Unknown" variant
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}
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pid_t sighook_signal_pid(const siginfo_t *info) {
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return info->si_pid;
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}
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uid_t sighook_signal_uid(const siginfo_t *info) {
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return info->si_uid;
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}
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