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31 lines
461 B
C
31 lines
461 B
C
#define _GNU_SOURCE
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <errno.h>
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int main()
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{
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int fds[2];
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int status;
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uint8_t buffer;
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status = pipe2(fds, O_NONBLOCK);
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if (status < 0) {
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perror("pipe2");
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exit(EXIT_FAILURE);
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}
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(void) alarm(5);
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(void) read(fds[0], &buffer, 1);
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if (errno != EAGAIN && errno != EWOULDBLOCK) {
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perror("read");
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exit(EXIT_FAILURE);
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}
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exit(EXIT_SUCCESS);
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}
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