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fa185f0d45
The new type struct fd_to_filename makes the allocation of the backing storage explicit. Hurd uses /dev/fd, not /proc/self/fd. Co-Authored-By: Paul Eggert <eggert@cs.ucla.edu>
38 lines
1.4 KiB
C
38 lines
1.4 KiB
C
/* Query filename corresponding to an open FD.
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Copyright (C) 2001-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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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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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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<https://www.gnu.org/licenses/>. */
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#ifndef _FD_TO_FILENAME_H
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#define _FD_TO_FILENAME_H
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#include <arch-fd_to_filename.h>
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#include <intprops.h>
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struct fd_to_filename
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{
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/* A positive int value has at most 10 decimal digits. */
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char buffer[sizeof (FD_TO_FILENAME_PREFIX) + INT_STRLEN_BOUND (int)];
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};
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/* Writes a /proc/self/fd-style path for DESCRIPTOR to *STORAGE and
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returns a pointer to the start of the string. DESCRIPTOR must be
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non-negative. */
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char *__fd_to_filename (int descriptor, struct fd_to_filename *storage)
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attribute_hidden;
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#endif /* _FD_TO_FILENAME_H */
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