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Kernel+LibC+crash: Add mprotect() syscall
This patch adds the mprotect() syscall to allow changing the protection flags for memory regions. We don't do any region splitting/merging yet, so this only works on whole mmap() regions. Added a "crash -r" flag to verify that we crash when you attempt to write to read-only memory. :^)
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7 changed files with 36 additions and 1 deletions
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@ -21,6 +21,7 @@ __BEGIN_DECLS
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void* mmap(void* addr, size_t, int prot, int flags, int fd, off_t);
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void* mmap_with_name(void* addr, size_t, int prot, int flags, int fd, off_t, const char* name);
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int munmap(void*, size_t);
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int mprotect(void*, size_t, int prot);
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int set_mmap_name(void*, size_t, const char*);
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int shm_open(const char* name, int flags, mode_t);
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int shm_unlink(const char* name);
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