mirror of
https://github.com/ioacademy-jikim/debugging
synced 2025-06-08 08:26:14 +00:00
37 lines
1.0 KiB
C
37 lines
1.0 KiB
C
/* Test program that invokes the Linux system call rt_sigqueueinfo(). */
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#include <signal.h>
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#include <string.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <syscall.h>
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#include <unistd.h>
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int main(int argc, char **argv)
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{
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siginfo_t *si;
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const size_t sz = sizeof(*si);
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if (argc == 1) {
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fprintf(stderr, "sizeof(*si) = %zu\n", sz);
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fprintf(stdout, "offsetof(siginfo_t, si_signo) = %zd\n",
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offsetof(siginfo_t, si_signo));
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fprintf(stdout, "offsetof(siginfo_t, si_errno) = %zd\n",
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offsetof(siginfo_t, si_errno));
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fprintf(stdout, "offsetof(siginfo_t, si_code) = %zd\n",
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offsetof(siginfo_t, si_code));
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fprintf(stdout, "offsetof(siginfo_t, _sifields) = %zd\n",
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offsetof(siginfo_t, _sifields));
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}
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si = calloc(1, sz);
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si->si_signo = SIGWINCH;
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si->si_code = SI_QUEUE;
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si->si_pid = getpid();
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si->si_uid = getuid();
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syscall(__NR_rt_sigqueueinfo, getpid(), SIGWINCH, si);
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free(si);
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fprintf(stderr, "Done.\n");
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return 0;
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}
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