glibc/sysdeps/unix/sysv/linux/ttyname.h
Paul Eggert 581c785bf3 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2022-01-01 11:40:24 -08:00

43 lines
1.5 KiB
C

/* Copyright (C) 2016-2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, see <https://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <stdbool.h>
#include <sys/sysmacros.h>
#include <sys/types.h>
#include <sys/stat.h>
/* Return true if this is a UNIX98 pty device, as defined in
linux/Documentation/devices.txt (on linux < 4.10) or
linux/Documentation/admin-guide/devices.txt (on linux >= 4.10). */
static inline bool
is_pty (struct __stat64_t64 *sb)
{
int m = __gnu_dev_major (sb->st_rdev);
return (136 <= m && m <= 143);
}
static inline bool
is_mytty (const struct __stat64_t64 *mytty, const struct __stat64_t64 *maybe)
{
return (maybe->st_ino == mytty->st_ino
&& maybe->st_dev == mytty->st_dev
&& S_ISCHR (maybe->st_mode)
&& maybe->st_rdev == mytty->st_rdev
);
}