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42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* Copyright (C) 1991-2024 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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#include <errno.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <hurd.h>
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/* Truncate FILE_NAME to LENGTH bytes. */
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int
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__truncate (const char *file_name, off_t length)
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{
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error_t err;
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file_t file = __file_name_lookup (file_name, O_WRITE, 0);
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if (file == MACH_PORT_NULL)
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return -1;
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err = __file_set_size (file, length);
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__mach_port_deallocate (__mach_task_self (), file);
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if (err)
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return __hurd_fail (err);
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return 0;
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}
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weak_alias (__truncate, truncate)
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