41 lines
629 B
C++
41 lines
629 B
C++
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/mman.h>
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#include <strings.h>
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#include <iostream>
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#include <unistd.h>
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#include <signal.h>
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using namespace std;
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int main(int argc, char **argv)
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{
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::signal(SIGXFSZ, SIG_IGN);
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if (argc!=3)
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{
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puts("usage: posixFallocateTester <filename> <size in bytes>");
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return 1;
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}
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const size_t N = ::atoi(argv[2]);
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int fd = open(argv[1], O_RDWR| O_CREAT |O_TRUNC, 0666 );
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if (fd < 0)
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{
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perror("open failed");
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exit(1);
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}
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if (::posix_fallocate(fd, 0, N) != 0)
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{
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perror("posix_fallocate failed");
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exit(1);
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}
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}
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