#define OLD_GZIP_MAGIC grub_le_to_cpu16 (0x9E1F)
/* Compression methods (see algorithm.doc) */
-#define STORED 0
-#define COMPRESSED 1
-#define PACKED 2
-#define LZHED 3
+#define GRUB_GZ_STORED 0
+#define GRUB_GZ_COMPRESSED 1
+#define GRUB_GZ_PACKED 2
+#define GRUB_GZ_LZHED 3
/* methods 4 to 7 reserved */
-#define DEFLATED 8
-#define MAX_METHODS 9
+#define GRUB_GZ_DEFLATED 8
+#define GRUB_GZ_MAX_METHODS 9
/* gzip flag byte */
-#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */
-#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
-#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
-#define COMMENT 0x10 /* bit 4 set: file comment present */
-#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
-#define RESERVED 0xC0 /* bit 6,7: reserved */
+#define GRUB_GZ_ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */
+#define GRUB_GZ_CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
+#define GRUB_GZ_EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
+#define GRUB_GZ_ORIG_NAME 0x08 /* bit 3 set: original file name present */
+#define GRUB_GZ_COMMENT 0x10 /* bit 4 set: file comment present */
+#define GRUB_GZ_ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
+#define GRUB_GZ_RESERVED 0xC0 /* bit 6,7: reserved */
-#define UNSUPPORTED_FLAGS (CONTINUATION | ENCRYPTED | RESERVED)
+#define GRUB_GZ_UNSUPPORTED_FLAGS (GRUB_GZ_CONTINUATION | GRUB_GZ_ENCRYPTED | GRUB_GZ_RESERVED)
/* inflate block codes */
#define INFLATE_STORED 0
* problem occurs from here on, then we have corrupt or otherwise
* bad data, and the error should be reported to the user.
*/
- if (hdr.method != DEFLATED
- || (hdr.flags & UNSUPPORTED_FLAGS)
- || ((hdr.flags & EXTRA_FIELD)
+ if (hdr.method != GRUB_GZ_DEFLATED
+ || (hdr.flags & GRUB_GZ_UNSUPPORTED_FLAGS)
+ || ((hdr.flags & GRUB_GZ_EXTRA_FIELD)
&& (grub_file_read (gzio->file, &extra_len, 2) != 2
|| eat_field (gzio->file,
grub_le_to_cpu16 (extra_len))))
- || ((hdr.flags & ORIG_NAME) && eat_field (gzio->file, -1))
- || ((hdr.flags & COMMENT) && eat_field (gzio->file, -1)))
+ || ((hdr.flags & GRUB_GZ_ORIG_NAME) && eat_field (gzio->file, -1))
+ || ((hdr.flags & GRUB_GZ_COMMENT) && eat_field (gzio->file, -1)))
return 0;
gzio->data_offset = grub_file_tell (gzio->file);
flg = get_byte (gzio);
/* Check that compression method is DEFLATE. */
- if ((cmf & 0xf) != DEFLATED)
+ if ((cmf & 0xf) != GRUB_GZ_DEFLATED)
{
/* TRANSLATORS: It's about given file having some strange format, not
complete lack of gzip support. */