33 lines
602 B
C
33 lines
602 B
C
/* vim: tabstop=4 shiftwidth=4 noexpandtab
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* pipe test
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <syscall.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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DEFN_SYSCALL1(wait, 17, unsigned int);
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DEFN_SYSCALL0(mkpipe, 21);
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int main(int argc, char ** argv) {
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int fd = syscall_mkpipe();
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printf("%d <- pipe\n", fd);
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int pid = getpid();
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uint32_t f = fork();
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if (getpid() != pid) {
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char buf[512];
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int r = read(fd, buf, 13);
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printf("[%d] %s\n", r, buf);
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return 0;
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} else {
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char * buf = "Hello world!";
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write(fd, buf, strlen(buf) + 1);
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return 0;
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}
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return 0;
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}
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