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Kernel+LibC: Add minherit() and MAP_INHERIT_ZERO

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This patch adds the minherit() syscall originally invented by OpenBSD.
Only the MAP_INHERIT_ZERO mode is supported for now. If set on an mmap
region, that region will be zeroed out on fork().
This commit is contained in:
Andreas Kling 2020-04-12 20:22:26 +02:00
parent dd00175ae2
commit c19b56dc99
8 changed files with 58 additions and 1 deletions
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Kernel/Process.h
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@ -204,6 +204,7 @@ public:
int sys$set_mmap_name(const Syscall::SC_set_mmap_name_params*);
int sys$mprotect(void*, size_t, int prot);
int sys$madvise(void*, size_t, int advice);
int sys$minherit(void*, size_t, int inherit);
int sys$purge(int mode);
int sys$select(const Syscall::SC_select_params*);
int sys$poll(pollfd*, int nfds, int timeout);