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Make ZipOS and Qemu work better

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This change improves the dirstream library in a lot of respects,
especially for /zip/... files. Also turn off MAP_STACK on Aarch64
because Qemu seems to implement it differently than Linux and it's
probably responsible for a lot of mysterious crashes.
This commit is contained in:
Justine Tunney 2023-08-15 18:24:53 -07:00
parent 4658ae539f
commit 110559ce6a
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GPG key ID: BE714B4575D6E328
48 changed files with 748 additions and 500 deletions
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6
libc/calls/fstatat.c
View file

@ -29,10 +29,10 @@
#include "libc/intrin/weaken.h"
#include "libc/log/log.h"
#include "libc/mem/alloca.h"
#include "libc/runtime/zipos.internal.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/at.h"
#include "libc/sysv/errfuns.h"
#include "libc/runtime/zipos.internal.h"
static inline const char *__strace_fstatat_flags(char buf[12], int flags) {
if (flags == AT_SYMLINK_NOFOLLOW) return "AT_SYMLINK_NOFOLLOW";
@ -56,7 +56,9 @@ int fstatat(int dirfd, const char *path, struct stat *st, int flags) {
/* execve() depends on this */
int rc;
struct ZiposUri zipname;
if (__isfdkind(dirfd, kFdZip)) {
if (IsAsan() && !__asan_is_valid(st, sizeof(*st))) {
rc = efault();
} else if (__isfdkind(dirfd, kFdZip)) {
STRACE("zipos dirfd not supported yet");
rc = einval();
} else if (_weaken(__zipos_stat) &&