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Diffstat (limited to 'libparted/labels/misc.h')
-rw-r--r-- | libparted/labels/misc.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/libparted/labels/misc.h b/libparted/labels/misc.h new file mode 100644 index 0000000..7c11388 --- /dev/null +++ b/libparted/labels/misc.h @@ -0,0 +1,48 @@ +/* -*- Mode: c; indent-tabs-mode: nil -*- + + libparted - a library for manipulating disk partitions + Copyright (C) 2007, 2009-2014, 2019-2023 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <inttypes.h> +#include <uuid/uuid.h> + +/* hack: use the ext2 uuid library to generate a reasonably random (hopefully + * with /dev/random) number. Unfortunately, we can only use 4 bytes of it. + * We make sure to avoid returning zero which may be interpreted as no FAT + * serial number or no MBR signature. + */ +static inline uint32_t +generate_random_uint32 (void) +{ + union { + uuid_t uuid; + uint32_t i; + } uu32; + + uuid_generate (uu32.uuid); + + return uu32.i > 0 ? uu32.i : 0xffffffff; +} + +/* Return nonzero if FS_TYPE_NAME starts with "linux-swap". + This must match the NUL-terminated "linux-swap" as well + as "linux-swap(v0)" and "linux-swap(v1)". */ +static inline int +is_linux_swap (char const *fs_type_name) +{ + char const *prefix = "linux-swap"; + return strncmp (fs_type_name, prefix, strlen (prefix)) == 0; +} |