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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
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GPG key ID: BE714B4575D6E328
108 changed files with 1126 additions and 807 deletions
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92
libc/calls/tcgetwinsize-nt.c
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@ -17,67 +17,45 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/internal.h"
#include "libc/calls/state.internal.h"
#include "libc/calls/struct/fd.internal.h"
#include "libc/calls/struct/winsize.h"
#include "libc/calls/struct/winsize.internal.h"
#include "libc/calls/syscall_support-nt.internal.h"
#include "libc/errno.h"
#include "libc/macros.internal.h"
#include "libc/nt/console.h"
#include "libc/nt/enum/startf.h"
#include "libc/nt/startupinfo.h"
#include "libc/nt/struct/consolescreenbufferinfoex.h"
#include "libc/nt/struct/startupinfo.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/fileno.h"
#include "libc/sysv/errfuns.h"
textwindows int tcgetwinsize_nt(struct Fd *fd, struct winsize *ws) {
int i, e, rc;
uint32_t mode;
struct Fd *fds[3];
struct NtStartupInfo startinfo;
struct NtConsoleScreenBufferInfoEx sbinfo;
rc = -1;
e = errno;
if (ws) {
__fds_lock();
fds[0] = fd, fds[1] = g_fds.p + 1, fds[2] = g_fds.p + 0;
GetStartupInfo(&startinfo);
for (i = 0; i < ARRAYLEN(fds); ++i) {
if (fds[i]->kind == kFdFile || fds[i]->kind == kFdConsole) {
if (GetConsoleMode(__getfdhandleactual(i), &mode)) {
bzero(&sbinfo, sizeof(sbinfo));
sbinfo.cbSize = sizeof(sbinfo);
if (GetConsoleScreenBufferInfoEx(__getfdhandleactual(i), &sbinfo)) {
ws->ws_col = sbinfo.srWindow.Right - sbinfo.srWindow.Left + 1;
ws->ws_row = sbinfo.srWindow.Bottom - sbinfo.srWindow.Top + 1;
ws->ws_xpixel = 0;
ws->ws_ypixel = 0;
errno = e;
rc = 0;
break;
} else if (startinfo.dwFlags & kNtStartfUsecountchars) {
ws->ws_col = startinfo.dwXCountChars;
ws->ws_row = startinfo.dwYCountChars;
ws->ws_xpixel = 0;
ws->ws_ypixel = 0;
errno = e;
rc = 0;
break;
} else {
__winerr();
}
} else {
enotty();
}
} else {
ebadf();
}
}
__fds_unlock();
} else {
efault();
textwindows int tcgetwinsize_nt(int fd, struct winsize *ws) {
// The Linux man page doesn't list EBADF as an errno for this.
if (!__isfdopen(fd)) {
return enotty();
}
// Unlike _check_sigwinch() this is an API so be stricter.
intptr_t hConsoleOutput;
if (fd == STDIN_FILENO) {
uint32_t dwMode;
// WIN32 doesn't allow GetConsoleScreenBufferInfoEx(stdin)
if (GetConsoleMode(g_fds.p[STDIN_FILENO].handle, &dwMode)) {
hConsoleOutput = g_fds.p[STDOUT_FILENO].handle;
if (GetConsoleMode(hConsoleOutput, &dwMode)) {
hConsoleOutput = g_fds.p[STDERR_FILENO].handle;
}
} else {
return enotty();
}
} else if (g_fds.p[fd].kind == kFdConsole) {
hConsoleOutput = g_fds.p[fd].extra;
} else {
hConsoleOutput = g_fds.p[fd].handle;
}
// Query the console.
struct NtConsoleScreenBufferInfoEx sr = {.cbSize = sizeof(sr)};
if (GetConsoleScreenBufferInfoEx(hConsoleOutput, &sr)) {
ws->ws_col = sr.srWindow.Right - sr.srWindow.Left + 1;
ws->ws_row = sr.srWindow.Bottom - sr.srWindow.Top + 1;
return 0;
} else {
return enotty();
}
return rc;
}