46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* pgtar.h
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* Functions for manipulating tarfile datastructures (src/port/tar.c)
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*
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*
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* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/pgtar.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_TAR_H
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#define PG_TAR_H
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#define TAR_BLOCK_SIZE 512
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enum tarError
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{
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TAR_OK = 0,
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TAR_NAME_TOO_LONG,
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TAR_SYMLINK_TOO_LONG
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};
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extern enum tarError tarCreateHeader(char *h, const char *filename,
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const char *linktarget, pgoff_t size,
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mode_t mode, uid_t uid, gid_t gid,
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time_t mtime);
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extern uint64 read_tar_number(const char *s, int len);
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extern void print_tar_number(char *s, int len, uint64 val);
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extern int tarChecksum(char *header);
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/*
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* Compute the number of padding bytes required for an entry in a tar
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* archive. We must pad out to a multiple of TAR_BLOCK_SIZE. Since that's
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* a power of 2, we can use TYPEALIGN().
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*/
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static inline size_t
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tarPaddingBytesRequired(size_t len)
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{
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return TYPEALIGN(TAR_BLOCK_SIZE, len) - len;
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}
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#endif
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