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* fhandler.cc (fhandler_base::write): Don't attempt to sparsify

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an already sparse file.  Drop check for FILE_SUPPORTS_SPARSE_FILES
	flag.  Explicitely set FILE_ATTRIBUTE_SPARSE_FILE attribute in
	cached attributes.
	(fhandler_base::lseek): Only set did_lseek if sparseness is supported.
	* fhandler_disk_file.cc (fhandler_disk_file::ftruncate): Don't attempt
	to sparsify an already sparse file.  Explicitely set
	FILE_ATTRIBUTE_SPARSE_FILE attribute in cached attributes.
	* mount.cc (oopt): Add "sparse" flag.
	(fillout_mntent): Ditto.
	* path.h (enum path_types): Add PATH_SPARSE.
	(path_conv::support_sparse): New method.
	(path_conv::fs_flags): Constify.
	(path_conv::fs_name_len): Ditto.
	include/sys/mount.h: Replace unused MOUNT_MIXED flag with MOUNT_SPARSE.
This commit is contained in:
Corinna Vinschen
2012-12-14 10:45:29 +00:00
parent 60f901f4a9
commit 05297cca5f
6 changed files with 48 additions and 12 deletions
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4
winsup/cygwin/include/sys/mount.h
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@@ -26,8 +26,8 @@ enum
device mount */
MOUNT_CYGWIN_EXEC = 0x00040, /* file or directory is or contains a
cygwin executable */
MOUNT_MIXED = 0x00080, /* reads are text, writes are binary
not yet implemented */
MOUNT_SPARSE = 0x00080, /* Support automatic sparsifying of
files. */
MOUNT_NOTEXEC = 0x00100, /* don't check files for executable magic */
MOUNT_DEVFS = 0x00200, /* /device "filesystem" */
MOUNT_PROC = 0x00400, /* /proc "filesystem" */