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Kernel+LibC+crash: Add mprotect() syscall

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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. :^)
This commit is contained in:
Andreas Kling 2019-08-12 19:33:24 +02:00
parent 4917445e2e
commit 7d6689055f
7 changed files with 36 additions and 1 deletions
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3
Kernel/Syscall.h
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@ -122,7 +122,8 @@ struct timeval;
__ENUMERATE_SYSCALL(dbgputstr) \
__ENUMERATE_SYSCALL(watch_file) \
__ENUMERATE_SYSCALL(share_buffer_globally) \
__ENUMERATE_SYSCALL(set_process_icon)
__ENUMERATE_SYSCALL(set_process_icon) \
__ENUMERATE_SYSCALL(mprotect)
namespace Syscall {