mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-18 20:35:24 +00:00
27e965f538
The initial version of libbtrfsutil did not follow a unified naming scheme that's usually used for libraries like those provide by util-linux. Add aliases that are "btrfs_util_" + object + action + suffix. The library version changes to 1.3 but there's no new functionality, only the aliases added. New functions can be added in the future without possible confusion when the same action could apply to different objects. Issue: #574 Signed-off-by: David Sterba <dsterba@suse.com>
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/*
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* Copyright (C) 2018 Facebook
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*
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* This file is part of libbtrfsutil.
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*
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* libbtrfsutil is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* libbtrfsutil 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libbtrfsutil. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef BTRFS_UTIL_INTERNAL_H
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#define BTRFS_UTIL_INTERNAL_H
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#include <asm/byteorder.h>
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#include <string.h>
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#include <errno.h>
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#include <unistd.h>
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#include "btrfsutil.h"
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#include "btrfs.h"
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#include "btrfs_tree.h"
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#define PUBLIC __attribute__((visibility("default")))
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#define LIBBTRFSUTIL_ALIAS(orig) __attribute__((alias(#orig)))
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#define le16_to_cpu __le16_to_cpu
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#define le32_to_cpu __le32_to_cpu
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#define le64_to_cpu __le64_to_cpu
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#define SAVE_ERRNO_AND_CLOSE(fd) do { \
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int saved_errno = errno; \
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\
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close(fd); \
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errno = saved_errno; \
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} while (0)
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/*
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* Accessors of search header that is commonly mapped to a byte buffer so the
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* alignment is not guraranteed
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*/
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static inline __u64 btrfs_search_header_transid(const struct btrfs_ioctl_search_header *sh)
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{
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__u64 tmp;
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memcpy(&tmp, &sh->transid, sizeof(__u64));
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return tmp;
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}
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static inline __u64 btrfs_search_header_objectid(const struct btrfs_ioctl_search_header *sh)
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{
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__u64 tmp;
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memcpy(&tmp, &sh->objectid, sizeof(__u64));
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return tmp;
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}
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static inline __u64 btrfs_search_header_offset(const struct btrfs_ioctl_search_header *sh)
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{
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__u64 tmp;
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memcpy(&tmp, &sh->offset, sizeof(__u64));
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return tmp;
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}
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static inline __u32 btrfs_search_header_type(const struct btrfs_ioctl_search_header *sh)
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{
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__u32 tmp;
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memcpy(&tmp, &sh->type, sizeof(__u32));
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return tmp;
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}
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static inline __u32 btrfs_search_header_len(const struct btrfs_ioctl_search_header *sh)
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{
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__u32 tmp;
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memcpy(&tmp, &sh->len, sizeof(__u32));
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return tmp;
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}
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#endif /* BTRFS_UTIL_INTERNAL_H */
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