49 lines
1.7 KiB
C
Executable File
49 lines
1.7 KiB
C
Executable File
/* -*- Mode: c; indent-tabs-mode: nil -*-
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libparted - a library for manipulating disk partitions
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Copyright (C) 2007, 2009-2014, 2019-2023 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <inttypes.h>
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#include <uuid/uuid.h>
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/* hack: use the ext2 uuid library to generate a reasonably random (hopefully
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* with /dev/random) number. Unfortunately, we can only use 4 bytes of it.
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* We make sure to avoid returning zero which may be interpreted as no FAT
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* serial number or no MBR signature.
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*/
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static inline uint32_t
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generate_random_uint32 (void)
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{
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union {
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uuid_t uuid;
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uint32_t i;
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} uu32;
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uuid_generate (uu32.uuid);
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return uu32.i > 0 ? uu32.i : 0xffffffff;
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}
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/* Return nonzero if FS_TYPE_NAME starts with "linux-swap".
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This must match the NUL-terminated "linux-swap" as well
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as "linux-swap(v0)" and "linux-swap(v1)". */
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static inline int
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is_linux_swap (char const *fs_type_name)
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{
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char const *prefix = "linux-swap";
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return strncmp (fs_type_name, prefix, strlen (prefix)) == 0;
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}
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