diff options
| -rw-r--r-- | src/mman/mprotect.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/mman/mprotect.c b/src/mman/mprotect.c index 1db2aea..5ab2d8b 100644 --- a/src/mman/mprotect.c +++ b/src/mman/mprotect.c @@ -1,7 +1,11 @@ #include <sys/mman.h> +#include <limits.h> #include "syscall.h" int mprotect(void *addr, size_t len, int prot) { - return syscall(SYS_mprotect, addr, len, prot); + size_t start, end; + start = (size_t)addr & -PAGE_SIZE; + end = (size_t)((char *)addr + len + PAGE_SIZE-1) & -PAGE_SIZE; + return syscall(SYS_mprotect, start, end-start, prot); } |