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Add seccomp bpf sandboxing to redbean

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It's now possible to pass the `-S` or `-SS` flags to sandbox redbean
worker proecsses after they've been forked. The first `-S` flag is
intended to be a permissive builtin policy that limits system calls to
only that which the various parts of redbean serving need. The second
`-SS` flag is intended to be more restrictive, preventing things like
the Lua extensions you download off the web from using the HTTP client
or sockets APIs. In upcoming changes you'll be able to implement your
own Berkeley Packet Filter sandbox programs and load them via Lua.
This commit is contained in:
Justine Tunney 2022-04-18 08:54:42 -07:00
parent 7166679620
commit 5a132f9652
79 changed files with 2271 additions and 651 deletions
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libc/sock/internal.h
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@ -132,6 +132,7 @@ int sys_select_nt(int, fd_set *, fd_set *, fd_set *, struct timeval *) hidden;
int sys_shutdown_nt(struct Fd *, int) hidden;
int sys_setsockopt_nt(struct Fd *, int, int, const void *, uint32_t) hidden;
bool __asan_is_valid_msghdr(const struct msghdr *);
ssize_t sys_send_nt(int, const struct iovec *, size_t, uint32_t) hidden;
ssize_t sys_recv_nt(struct Fd *, const struct iovec *, size_t, uint32_t) hidden;
size_t __iovec2nt(struct NtIovec[hasatleast 16], const struct iovec *,