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Perform minor fixups

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One of those fixups is making sure that AF_LOCAL is equal to AF_UNIX on
the New Technology. See #122
This commit is contained in:
Justine Tunney 2021-03-13 19:39:17 -08:00
parent 83d0c3b870
commit 807706a099
14 changed files with 76 additions and 134 deletions
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6
libc/runtime/hook.greg.c
View file

@ -19,6 +19,7 @@
#include "libc/bits/bits.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/sigbits.h"
#include "libc/calls/struct/sigset.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/symbols.internal.h"
@ -45,14 +46,15 @@
privileged void __hook(void *ifunc, struct SymbolTable *symbols) {
size_t i;
intptr_t addr;
sigset_t oldmask;
uint64_t code, mcode;
unsigned char *p, *pe;
sigset_t mask, oldmask;
const intptr_t kMcount = (intptr_t)&mcount;
const intptr_t kProgramCodeStart = (intptr_t)&_ereal;
const intptr_t kPrivilegedStart = (intptr_t)&__privileged_start;
const bool kIsBinaryAligned = !(kPrivilegedStart & (PAGESIZE - 1));
sigprocmask(SIG_BLOCK, &kSigsetFull, &oldmask);
sigfillset(&mask);
sigprocmask(SIG_BLOCK, &mask, &oldmask);
if (mprotect((void *)symbols->addr_base,
kPrivilegedStart - symbols->addr_base,
kIsBinaryAligned ? PROT_READ | PROT_WRITE