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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/mount.cc
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@@ -1028,6 +1028,7 @@ struct opt
{"override", MOUNT_OVERRIDE, 0},
{"posix=0", MOUNT_NOPOSIX, 0},
{"posix=1", MOUNT_NOPOSIX, 1},
{"sparse", MOUNT_SPARSE, 0},
{"text", MOUNT_BINARY, 1},
{"user", MOUNT_SYSTEM, 1}
};
@@ -1667,6 +1668,9 @@ fillout_mntent (const char *native_path, const char *posix_path, unsigned flags)
if (flags & MOUNT_NOPOSIX)
strcat (_my_tls.locals.mnt_opts, (char *) ",posix=0");
if (flags & MOUNT_SPARSE)
strcat (_my_tls.locals.mnt_opts, (char *) ",sparse");
if (!(flags & MOUNT_SYSTEM)) /* user mount */
strcat (_my_tls.locals.mnt_opts, (char *) ",user");