75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h> /* Definition of AT_* constants */
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#include <unistd.h>
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#include <string.h>
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#include <stdio.h>
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#include <signal.h>
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static const char *kat = "/tmp/FIFO-TMP-SERWER";
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static const char *kat_1 = "/tmp/FIFO-TMP-1-";
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static const char *kat_2 = "/tmp/FIFO-TMP-2-";
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int f, f1, f2;
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void end()
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{
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close(f);
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close(f1);
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close(f2);
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unlink(kat);
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exit(0);
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}
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int main()
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{
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pid_t pid;
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char kat_1_pid[100];
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char kat_2_pid[100];
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signal(SIGTERM, end);
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signal(SIGINT, end);
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if (mkfifo(kat, 0600) == -1)
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{
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printf("mkfifo open error\n");
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return;
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}
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if ((f = open(kat, O_RDONLY)) == -1)
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{
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unlink(kat);
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printf("kat open error\n");
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return;
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}
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for (;;)
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{
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read(f, &pid, sizeof(pid_t));
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printf("pid: %d\n", pid);
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strcpy(kat_1_pid, kat_1);
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strcpy(kat_2_pid, kat_2);
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sprintf(kat_1_pid + strlen(kat_1), "%d", pid);
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sprintf(kat_2_pid + strlen(kat_2), "%d", pid);
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// printf(kat_1_pid);
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// printf(kat_2_pid);
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if ((f2 = open(kat_2_pid, O_RDONLY)) == -1)
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{
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unlink(kat);
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close(f);
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printf("kat2 open error\n");
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return;
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}
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printf("f2 open\n");
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if ((f1 = open(kat_1_pid, O_WRONLY)) == -1)
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{
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unlink(kat);
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close(f2);
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close(f);
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printf("kat1 open error\n");
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return;
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}
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printf("f1 open\n");
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double d2, d;
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read(f2, &d, sizeof(double));
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d2 = d * d;
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write(f1, &d2, sizeof(double));
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close(f1);
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close(f2);
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}
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} |