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67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
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/* unistd.h related helpers.
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Copyright (C) 2023 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 _UNISTD_EXT_H
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#define _UNISTD_EXT_H
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#include <error.h>
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#include <errno.h>
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#include <libintl.h>
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#include <unistd.h>
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/* Helpers used in catgets/gencat.c and malloc/memusage*.c */
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static inline void
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write_all (int fd, const void *buffer, size_t length)
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{
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const char *p = buffer;
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const char *end = p + length;
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while (p < end)
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{
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ssize_t ret = write (fd, p, end - p);
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if (ret < 0)
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error (EXIT_FAILURE, errno,
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gettext ("write of %zu bytes failed after %td: %m"),
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length, p - (const char *) buffer);
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if (ret == 0)
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error (EXIT_FAILURE, 0,
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gettext ("write returned 0 after writing %td bytes of %zu"),
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p - (const char *) buffer, length);
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p += ret;
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}
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}
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static inline void
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read_all (int fd, void *buffer, size_t length)
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{
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char *p = buffer;
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char *end = p + length;
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while (p < end)
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{
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ssize_t ret = read (fd, p, end - p);
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if (ret < 0)
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error (EXIT_FAILURE, errno,
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gettext ("read of %zu bytes failed after %td: %m"),
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length, p - (char *) buffer);
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p += ret;
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}
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}
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#endif
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