30 lines
1,015 B
C
30 lines
1,015 B
C
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#ifndef __LIB_USTAR_H
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#define __LIB_USTAR_H
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/* Support for the standard Posix "ustar" format. See the
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documentation of the "pax" utility in [SUSv3] for the the
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"ustar" format specification. */
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#include <stdbool.h>
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/* Type of a file entry in an archive.
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The values here are the bytes that appear in the file format.
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Only types of interest to Pintos are listed here. */
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enum ustar_type
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{
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USTAR_REGULAR = '0', /* Ordinary file. */
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USTAR_DIRECTORY = '5', /* Directory. */
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USTAR_EOF = -1 /* End of archive (not an official value). */
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};
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/* Size of a ustar archive header, in bytes. */
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#define USTAR_HEADER_SIZE 512
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bool ustar_make_header (const char *file_name, enum ustar_type,
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int size, char header[USTAR_HEADER_SIZE]);
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const char *ustar_parse_header (const char header[USTAR_HEADER_SIZE],
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const char **file_name,
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enum ustar_type *, int *size);
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#endif /* lib/ustar.h */
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