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work around linux bug in mprotect
[oweals/musl.git]
/
src
/
mman
/
mprotect.c
1
#include <sys/mman.h>
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#include <limits.h>
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#include "syscall.h"
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int mprotect(void *addr, size_t len, int prot)
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{
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size_t start, end;
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start = (size_t)addr & -PAGE_SIZE;
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end = (size_t)((char *)addr + len + PAGE_SIZE-1) & -PAGE_SIZE;
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return syscall(SYS_mprotect, start, end-start, prot);
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}