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Fix bugs in cosmocc toolchain

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This change integrates e58abc1110b335a3341e8ad5821ad8e3880d9bb2 from
https://github.com/ahgamut/musl-cross-make/ which fixes the issues we
were having with our C language extension for symbolic constants. This
change also performs some code cleanup and bug fixes to getaddrinfo().
It's now possible to compile projects like ncurses, readline and python
without needing to patch anything upstream, except maybe a line or two.
Pretty soon it should be possible to build a Linux distro on Cosmo.
This commit is contained in:
Justine Tunney 2023-06-08 23:44:03 -07:00
parent 22f81a8d50
commit 23e235b7a5
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GPG key ID: BE714B4575D6E328
272 changed files with 3491 additions and 4350 deletions
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23
libc/calls/pledge-linux.c
View file

@ -1260,8 +1260,8 @@ static privileged void OnSigSys(int sig, siginfo_t *si, void *vctx) {
}
}
if (!found) {
Log("error: bad syscall ", GetSyscallName(si->si_syscall),
" (ord=", ord, ")\n", NULL);
Log("error: bad syscall ", GetSyscallName(si->si_syscall), " (ord=", ord,
")\n", NULL);
}
switch (mode & PLEDGE_PENALTY_MASK) {
case PLEDGE_PENALTY_KILL_PROCESS:
@ -1366,24 +1366,6 @@ static privileged void AllowMonitor(struct Filter *f) {
AppendFilter(f, PLEDGE(fragment));
}
// SYSCALL is only allowed in the .privileged section
// We assume program image is loaded in 32-bit spaces
static privileged void AppendOriginVerification(struct Filter *f) {
long x = (long)__privileged_start;
long y = (long)__privileged_end;
struct sock_filter fragment[] = {
/*L0*/ BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(instruction_pointer) + 4),
/*L1*/ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, 0, 5 - 2),
/*L2*/ BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(instruction_pointer)),
/*L3*/ BPF_JUMP(BPF_JMP | BPF_JGE | BPF_K, x, 0, 5 - 4),
/*L4*/ BPF_JUMP(BPF_JMP | BPF_JGE | BPF_K, y, 0, 6 - 5),
/*L5*/ BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_KILL),
/*L6*/ BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(nr)),
/*L7*/ /* next filter */
};
AppendFilter(f, PLEDGE(fragment));
}
// The first argument of sys_clone_linux() must NOT have:
//
// - CLONE_NEWNS (0x00020000)
@ -1615,7 +1597,6 @@ static privileged void AllowGetsockoptRestrict(struct Filter *f) {
// - MAP_HUGETLB (0x40000)
//
static privileged void AllowMmapExec(struct Filter *f) {
long y = (long)__privileged_end;
static const struct sock_filter fragment[] = {
/*L0*/ BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, __NR_linux_mmap, 0, 6 - 1),
/*L1*/ BPF_STMT(BPF_LD | BPF_W | BPF_ABS, OFF(args[3])), // flags