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Fix termios struct on Linux

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The termios::c_cc field turned out to be incorrectly defined on Linux
due to some confusion between the glibc and kernel definitions. We'll
be using the kernel definition, since it has the strongest consensus.

Fields have been have been added to struct stat for BSD compatibility
such as st_birthtim, plus the GLIBC compatibility of isystem/sys/stat
has been improved.
This commit is contained in:
Justine Tunney 2021-09-03 22:19:41 -07:00
parent 0584684a82
commit 5b60e5a37d
52 changed files with 358 additions and 296 deletions
Download patch file Download diff file Expand all files Collapse all files

32
libc/calls/ioctl_tcgets.c
View file

@ -20,6 +20,7 @@
#include "libc/calls/ioctl.h"
#include "libc/calls/struct/metatermios.internal.h"
#include "libc/calls/termios.internal.h"
#include "libc/calls/ttydefaults.h"
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
#include "libc/sysv/consts/termios.h"
@ -27,13 +28,33 @@
int ioctl_tcgets_nt(int, struct termios *) hidden;
static int ioctl_tcgets_metal(int fd, struct termios *tio) {
memset(tio, 0, sizeof(*tio));
tio->c_iflag = TTYDEF_IFLAG;
tio->c_oflag = TTYDEF_OFLAG;
tio->c_lflag = TTYDEF_LFLAG;
tio->c_cflag = TTYDEF_CFLAG;
return 0;
}
static int ioctl_tcgets_sysv(int fd, struct termios *tio) {
int rc;
union metatermios t;
if ((rc = sys_ioctl(fd, TCGETS, &t)) != -1) {
__termios2linux(tio, &t);
union metatermios mt;
if (IsLinux()) {
if (IsAsan() && !__asan_is_valid(tio, sizeof(*tio))) return efault();
return sys_ioctl(fd, TCGETS, tio);
} else {
if ((rc = sys_ioctl(fd, TCGETS, &mt)) != -1) {
if (IsXnu()) {
COPY_TERMIOS(tio, &mt.xnu);
} else if (IsFreebsd() || IsOpenbsd() || IsNetbsd()) {
COPY_TERMIOS(tio, &mt.bsd);
} else {
unreachable;
}
}
return rc;
}
return rc;
}
/**
@ -51,9 +72,10 @@ int ioctl_tcgets(int fd, ...) {
va_end(va);
if (fd >= 0) {
if (!tio) return efault();
if (IsAsan() && !__asan_is_valid(tio, sizeof(*tio))) return efault();
if (fd < g_fds.n && g_fds.p[fd].kind == kFdZip) {
return enotty();
} else if (IsMetal()) {
return ioctl_tcgets_metal(fd, tio);
} else if (!IsWindows()) {
return ioctl_tcgets_sysv(fd, tio);
} else {