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Refactor pledge() to be more configurable

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The earlier iterations did too much guesswork when it came to things
like stderr logging and syscall origin verification. This change will
make things more conformant to existing practices. The __pledge_mode
extension now can be configured in a better way.

There's also a new `-q` flag added to pledge.com, e.g.

    o//tool/build/pledge.com -qv. ls

Is a good way to disable warnings about `tty` access attempts.
This commit is contained in:
Justine Tunney 2022-08-11 11:27:25 -07:00
parent 6b8b58fdf5
commit 625aa365f1
36 changed files with 203 additions and 168 deletions
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2
libc/calls/pledge.internal.h
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@ -13,7 +13,7 @@ struct Pledges {
hidden extern const struct Pledges kPledge[PROMISE_LEN_];
int sys_pledge_linux(unsigned long, enum PledgeMode, bool) hidden;
int sys_pledge_linux(unsigned long, int) hidden;
int ParsePromises(const char *, unsigned long *) hidden;
COSMOPOLITAN_C_END_