34 lines
965 B
C
34 lines
965 B
C
/*
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* pivot_root.c - Change the root file system
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*
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* Copyright (C) 2000 Werner Almesberger
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdio.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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#define pivot_root(new_root,put_old) syscall(SYS_pivot_root,new_root,put_old)
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int main(int argc, const char **argv)
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{
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if (argc != 3) {
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fprintf(stderr, "usage: %s new_root put_old\n", argv[0]);
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return 1;
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}
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if (pivot_root(argv[1], argv[2]) < 0) {
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perror("pivot_root");
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return 1;
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}
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return 0;
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}
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