mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-12 22:19:10 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Implement more security stuff

Browse source 
- Support deterministic stacks on OpenBSD
- Support OpenBSD system call origin verification
- Fix overrun by one in chibicc string token allocator
- Get all chibicc tests passing under Address Sanitizer
This commit is contained in:
Justine Tunney 2021-02-02 20:21:06 -08:00
parent cbfd4ccd1e
commit c843243322
56 changed files with 376 additions and 245 deletions
Download patch file Download diff file Expand all files Collapse all files

6
libc/sysv/consts.sh
View file

@ -237,8 +237,9 @@ syscon mmap MAP_SHARED 1 1 1 1 1 # forced consensus & faked nt
syscon mmap MAP_PRIVATE 2 2 2 2 2 # forced consensus & faked nt
syscon mmap MAP_FIXED 0x10 0x10 0x10 0x10 0x10 # unix consensus; openbsd appears to forbid; faked nt
syscon mmap MAP_ANONYMOUS 0x20 0x1000 0x1000 0x1000 0x20 # bsd consensus; faked nt
syscon mmap MAP_GROWSDOWN 0x0100 0 0x0400 0x4000 0x100000 # mandatory for OpenBSD stacks; MAP_STACK on Free/OpenBSD; MEM_TOP_DOWN on NT
syscon mmap MAP_CONCEAL 0 0 0x20000 0x8000 0 # omit from core dumps; MAP_NOCORE on FreeBSD
syscon mmap MAP_NORESERVE 0x4000 0x40 0 0 0 # Linux calls it "reserve"; NT calls it "commit"? which is default?
syscon mmap MAP_GROWSDOWN 0x0100 0 0x0400 0x0400 0x100000 # MAP_STACK on BSD; MEM_TOP_DOWN on NT
syscon mmap MAP_HUGETLB 0x040000 0 0 0 0x80000000 # kNtSecLargePages
syscon mmap MAP_HUGE_MASK 63 0 0 0 0
syscon mmap MAP_HUGE_SHIFT 26 0 0 0 0
@ -246,6 +247,8 @@ syscon mmap MAP_LOCKED 0x2000 0 0 0 0
syscon mmap MAP_NONBLOCK 0x10000 0 0 0 0
syscon mmap MAP_POPULATE 0x8000 0 0 0 0 # can avoid madvise(MADV_WILLNEED) on private file mapping
syscon mmap MAP_TYPE 15 0 0 0 0 # what is it
syscon compat MAP_STACK 0x0100 0 0x0400 0x4000 0x100000 # use MAP_GROWSDOWN
syscon compat MAP_NOCORE 0 0 0x20000 0x8000 0 # use MAP_CONCEAL
syscon compat MAP_ANON 0x20 0x1000 0x1000 0x1000 0x20 # bsd consensus; faked nt
syscon compat MAP_STACK 0x020000 0 0x0400 0x4000 0x100000
syscon compat MAP_EXECUTABLE 0x1000 0 0 0 0 # ignored
@ -3112,6 +3115,7 @@ syscon nr __NR_io_uring_setup 0x01a9 -1 -1 -1 -1
syscon nr __NR_io_uring_enter 0x01aa -1 -1 -1 -1
syscon nr __NR_io_uring_register 0x01ab -1 -1 -1 -1
syscon nr __NR_pledge -1 -1 -1 0x006c -1
syscon nr __NR_msyscall -1 -1 -1 0x0025 -1
syscon nr __NR_ktrace -1 -1 0x002d 0x002d -1
syscon nr __NR_kqueue -1 0x200016a 0x016a 0x010d -1
syscon nr __NR_kevent -1 0x2000171 0x0230 0x0048 -1