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Make improvements for Actually Portable Emacs

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- Get SIGWINCH working again on the New Technology
- Correctly handle O_NOFOLLOW in open() on Windows
- Implement synthetic umask() functionality on Windows
- Do a better job managing file execute access on Windows
- Fill in `st_uid` and `st_gid` with username hash on Windows
- Munge UNICODE control pictures into control codes on Windows
- Do a better job ensuring Windows console settings are restored
- Introduce KPRINTF_LOG environment variable to log kprintf to a file
This commit is contained in:
Justine Tunney 2023-08-19 06:41:06 -07:00
parent 9c7b81ee0f
commit 965516e313
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
108 changed files with 1126 additions and 807 deletions
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13
libc/calls/fstat-nt.c
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@ -17,9 +17,11 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/struct/stat.h"
#include "libc/calls/syscall_support-nt.internal.h"
#include "libc/fmt/conv.h"
#include "libc/intrin/atomic.h"
#include "libc/intrin/bsr.h"
#include "libc/intrin/strace.internal.h"
#include "libc/macros.internal.h"
@ -70,25 +72,27 @@ static textwindows uint32_t GetSizeOfReparsePoint(int64_t fh) {
textwindows int sys_fstat_nt(int64_t handle, struct stat *st) {
int filetype;
uint32_t umask;
uint64_t actualsize;
struct NtFileCompressionInfo fci;
struct NtByHandleFileInformation wst;
if (!st) return efault();
if ((filetype = GetFileType(handle))) {
bzero(st, sizeof(*st));
umask = atomic_load_explicit(&__umask, memory_order_acquire);
switch (filetype) {
case kNtFileTypeChar:
st->st_mode = S_IFCHR | 0644;
st->st_mode = S_IFCHR | (0666 & ~umask);
break;
case kNtFileTypePipe:
st->st_mode = S_IFIFO | 0644;
st->st_mode = S_IFIFO | (0666 & ~umask);
break;
case kNtFileTypeDisk:
if (GetFileInformationByHandle(handle, &wst)) {
st->st_mode = 0555;
st->st_mode = 0555 & ~umask;
st->st_flags = wst.dwFileAttributes;
if (!(wst.dwFileAttributes & kNtFileAttributeReadonly)) {
st->st_mode |= 0200;
st->st_mode |= 0222 & ~umask;
}
if (wst.dwFileAttributes & kNtFileAttributeDirectory) {
st->st_mode |= S_IFDIR;
@ -101,6 +105,7 @@ textwindows int sys_fstat_nt(int64_t handle, struct stat *st) {
st->st_mtim = FileTimeToTimeSpec(wst.ftLastWriteFileTime);
st->st_ctim = FileTimeToTimeSpec(wst.ftCreationFileTime);
st->st_birthtim = st->st_ctim;
st->st_gid = st->st_uid = __synthesize_uid();
st->st_size = (uint64_t)wst.nFileSizeHigh << 32 | wst.nFileSizeLow;
st->st_blksize = 4096;
st->st_dev = wst.dwVolumeSerialNumber;