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Make the Windows Console work better

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The stdio reader thread now appears to be working recursively along
cosmopolitan subprocesses. For example, it's now possible to launch
vim.com from the unbourne.com bestline repl, thanks to hacks plus a
bug fix to select() timeouts.
This commit is contained in:
Justine Tunney 2023-09-07 16:03:19 -07:00
parent 032b1f3449
commit 8bdaddd81d
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
68 changed files with 580 additions and 346 deletions
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31
libc/calls/fdatasync.c
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@ -18,39 +18,46 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/cp.internal.h"
#include "libc/calls/struct/stat.h"
#include "libc/calls/internal.h"
#include "libc/calls/syscall-nt.internal.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
#include "libc/intrin/strace.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/errfuns.h"
/**
* Blocks until kernel flushes non-metadata buffers for fd to disk.
*
* @return 0 on success, or -1 w/ errno
* @raise ECANCELED if thread was cancelled in masked mode
* @raise EROFS if `fd` is on a read-only filesystem e.g. /zip
* @raise EINVAL if `fd` is a special file w/o synchronization
* @raise ENOSPC if disk space was exhausted
* @raise EBADF if `fd` isn't an open file
* @raise EINTR if signal was delivered
* @raise EIO if an i/o error happened
* @see sync(), fsync(), sync_file_range()
* @see __nosync to secretly disable
* @raise ECANCELED if thread was cancelled in masked mode
* @raise EINTR if signal was delivered
* @cancellationpoint
* @asyncsignalsafe
*/
int fdatasync(int fd) {
int rc;
struct stat st;
if (__nosync != 0x5453455454534146) {
BEGIN_CANCELLATION_POINT;
if (!IsWindows()) {
bool fake = __nosync == 0x5453455454534146;
BEGIN_CANCELLATION_POINT;
if (__isfdkind(fd, kFdZip)) {
rc = erofs();
} else if (!IsWindows()) {
if (!fake) {
rc = sys_fdatasync(fd);
} else {
rc = sys_fdatasync_nt(fd);
rc = sys_fsync_fake(fd);
}
END_CANCELLATION_POINT;
STRACE("fdatasync(%d) → %d% m", fd, rc);
} else {
rc = fstat(fd, &st);
STRACE("fdatasync_fake(%d) → %d% m", fd, rc);
rc = sys_fdatasync_nt(fd, fake);
}
END_CANCELLATION_POINT;
STRACE("fdatasync%s(%d) → %d% m", fake ? "_fake" : "", fd, rc);
return rc;
}