32 lines
460 B
C
32 lines
460 B
C
/*
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newroot.c
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Replace the current root with a new one
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int main(int argc, char *argv[])
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{
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int r;
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char *dev;
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if (argc != 2)
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{
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fprintf(stderr, "Usage: newroot <block-special>\n");
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exit(1);
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}
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dev= argv[1];
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r= mount(dev, "/", 0 /* !ro */);
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if (r != 0)
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{
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fprintf(stderr, "newroot: mount failed: %s\n", strerror(errno));
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exit(1);
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}
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return 0;
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}
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