66 lines
2.1 KiB
Diff
66 lines
2.1 KiB
Diff
From f22cca4722fa66e424562e69f4afa2bca0af871d Mon Sep 17 00:00:00 2001
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From: "Anthony G. Basile" <blueness@gentoo.org>
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Date: Sun, 28 Jul 2013 09:08:34 -0400
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Subject: [PATCH] libc: add isfdtype()
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isfdtype(int fd, int fdtype) check whether a file descriptor fd is
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of type fdtype, where the types are defined in stat(2). It is
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supported in glibc and BSD, and used by utilities such as acpid.
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Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
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Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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---
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libc/misc/file/isfdtype.c | 40 ++++++++++++++++++++++++++++++++++++++++
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1 file changed, 40 insertions(+)
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create mode 100644 libc/misc/file/isfdtype.c
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diff --git a/libc/misc/file/isfdtype.c b/libc/misc/file/isfdtype.c
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new file mode 100644
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index 0000000..4d9199b
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--- /dev/null
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+++ libc/misc/file/isfdtype.c
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@@ -0,0 +1,40 @@
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+/* Determine whether descriptor has given property.
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+ Copyright (C) 1996-2013 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <http://www.gnu.org/licenses/>. */
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+
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+#include <errno.h>
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+#include <sys/stat.h>
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+#include <sys/socket.h>
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+#include <sys/types.h>
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+#ifdef __UCLIBC_HAS_LFS__
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+# include <_lfs_64.h>
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+#else
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+# define stat64 stat
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+# define fstat64 fstat
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+#endif
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+
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+int
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+isfdtype (int fildes, int fdtype)
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+{
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+ struct stat64 st;
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+ int save_error = errno;
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+ int result = fstat64 (fildes, &st);
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+ __set_errno (save_error);
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+ if (result)
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+ return result;
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+ return (st.st_mode & S_IFMT) == (mode_t) fdtype;
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+}
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--
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1.8.3.2.733.gf8abaeb
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