Applications now could call iscygtty(STDIN_FILENO) in order to detect whether they are running from Cygwin/MSys terminal.
Without that, they have no choice but to think that stdin is redirected from a named pipe. Signed-off-by: Mihail Konev <k....@ya.ru> Moved-from: https://github.com/Alexpux/mingw-w64/pull/3 --- mingw-w64-headers/include/iscygtty.c | 69 ++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 mingw-w64-headers/include/iscygtty.c diff --git a/mingw-w64-headers/include/iscygtty.c b/mingw-w64-headers/include/iscygtty.c new file mode 100644 index 000000000000..f7344b8b20c4 --- /dev/null +++ b/mingw-w64-headers/include/iscygtty.c @@ -0,0 +1,69 @@ +#ifndef __ISCYGTTY_C__ +#define __ISCYGTTY_C__ + +#include <io.h> +#include <winternl.h> + +static int iscygtty(int fd) { + intptr_t h_fd = _get_osfhandle(fd); + + char ntfn_bytes[sizeof(OBJECT_NAME_INFORMATION) + 256 * sizeof(WCHAR)]; + OBJECT_NAME_INFORMATION *ntfn = (OBJECT_NAME_INFORMATION*) ntfn_bytes; + NTSTATUS status; + ULONG ntfn_size = sizeof(ntfn_bytes); + + USHORT i, l; + wchar_t c, *s0; + + memset(ntfn, 0, ntfn_size); + status = NtQueryObject((HANDLE)h_fd, ObjectNameInformation, + ntfn, ntfn_size, &ntfn_size); + + if (!NT_SUCCESS(status)) + return 0; + + l = ntfn->Name.Length; + s0 = ntfn->Name.Buffer; + + /* Check for "\Device\NamedPipe" */ + { + USHORT l1 = l; + wchar_t *s1 = s0; + wchar_t expect[] = L"\\Device\\NamedPipe\\"; + + if (s0[0] == '\\' && s0[1] == '\\' && s0[2] == '?' && s0[3] == '\\') { + l1 -= 4; + s1 += 4; + } + for (i = 0; i < l1; i++) { + wchar_t e = expect[i]; + c = s1[i]; + if (!e) + break; + if (c != e) + return 0; + } + } + + /* Look for "-pty%d-" */ + for (i = 0; i < l; i++) { + c = s0[i]; + if (c == '-') { + wchar_t *s = s0 + i + 1; + c = *s; + if ((c == 'p' || c == 't') && s[1] == 't' && s[2] == 'y' && + (c = s[3]) && (c >= '0') && (c <= '9')) + { + s += 4; + while ((c = *s) && (c >= '0') && (c <= '9')) + s++; + if (c == '-' || c == 0) + return 1; + } + } + } + + return 0; +} + +#endif /* __ISCYGTTY_C__ */ -- 2.9.2 ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Mingw-w64-public mailing list Mingw-w64-public@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
