* fhandler.cc (fhandler_base::write): Don't attempt to sparsify
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.
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@ -26,8 +26,8 @@ enum
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device mount */
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MOUNT_CYGWIN_EXEC = 0x00040, /* file or directory is or contains a
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cygwin executable */
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MOUNT_MIXED = 0x00080, /* reads are text, writes are binary
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not yet implemented */
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MOUNT_SPARSE = 0x00080, /* Support automatic sparsifying of
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files. */
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MOUNT_NOTEXEC = 0x00100, /* don't check files for executable magic */
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MOUNT_DEVFS = 0x00200, /* /device "filesystem" */
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MOUNT_PROC = 0x00400, /* /proc "filesystem" */
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