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| author | AsumFace <asumface@gmail.com> | 2019-08-23 21:58:06 +0200 |
|---|---|---|
| committer | Nikolaus Rath <Nikolaus@rath.org> | 2019-08-23 20:58:06 +0100 |
| commit | 1d8e8ca94a3faa635afd1a3bd8d7d26472063a3f (patch) | |
| tree | 97817a6d7b696afeb5f0a27314973eb11d21fd05 | |
| parent | f0e08cc700d629da2d46def8b620b0ed858cc0d9 (diff) | |
| download | libfuse-1d8e8ca94a3faa635afd1a3bd8d7d26472063a3f.tar.gz | |
Clarify bitfield padding issue (#445)
* Clarify bitfield padding issue
* Add a more elaborate note to fuse_file_info
| -rw-r--r-- | include/fuse_common.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/include/fuse_common.h b/include/fuse_common.h index 0481aac..efee194 100644 --- a/include/fuse_common.h +++ b/include/fuse_common.h @@ -83,7 +83,13 @@ struct fuse_file_info { unsigned int cache_readdir : 1; /** Padding. Reserved for future use*/ - unsigned int padding : 26; + unsigned int padding : 25; + /* The following int was once allocated by accident, it is kept for + backwards compatibility. `padding2` may be used to implement additional + flags in the future just like `padding`. For the sake of compatibility + make sure that the bitfields fit into blocks of 32 bits exactly so that + no hidden padding exists in between. */ + unsigned int padding2 : 32; /** File handle id. May be filled in by filesystem in create, * open, and opendir(). Available in most other file operations on the @@ -246,7 +252,7 @@ struct fuse_loop_config { #define FUSE_CAP_READDIRPLUS (1 << 13) /** - * Indicates that the filesystem supports adaptive readdirplus. + * Indicates that the filesystem supports adaptive readdirplus. * * If FUSE_CAP_READDIRPLUS is not set, this flag has no effect. * |