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32 lines
728 B
32 lines
728 B
20 years ago
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/*
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* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
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* Licensed under the GPL
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*/
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#include <sys/mman.h>
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int switcheroo(int fd, int prot, void *from, void *to, int size)
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{
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if(munmap(to, size) < 0){
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return(-1);
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}
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if(mmap(to, size, prot, MAP_SHARED | MAP_FIXED, fd, 0) != to){
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return(-1);
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}
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if(munmap(from, size) < 0){
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return(-1);
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}
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return(0);
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}
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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