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pg_backup_tar.h
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1 /*
2  * src/bin/pg_dump/pg_backup_tar.h
3  *
4  * TAR Header (see "ustar interchange format" in POSIX 1003.1)
5  *
6  * Offset Length Contents
7  * 0 100 bytes File name ('\0' terminated, 99 maximum length)
8  * 100 8 bytes File mode (in octal ascii)
9  * 108 8 bytes User ID (in octal ascii)
10  * 116 8 bytes Group ID (in octal ascii)
11  * 124 12 bytes File size (in octal ascii)
12  * 136 12 bytes Modify time (Unix timestamp in octal ascii)
13  * 148 8 bytes Header checksum (in octal ascii)
14  * 156 1 bytes Type flag (see below)
15  * 157 100 bytes Linkname, if symlink ('\0' terminated, 99 maximum length)
16  * 257 6 bytes Magic ("ustar\0")
17  * 263 2 bytes Version ("00")
18  * 265 32 bytes User name ('\0' terminated, 31 maximum length)
19  * 297 32 bytes Group name ('\0' terminated, 31 maximum length)
20  * 329 8 bytes Major device ID (in octal ascii)
21  * 337 8 bytes Minor device ID (in octal ascii)
22  * 345 155 bytes File name prefix (not used in our implementation)
23  * 500 12 bytes Padding
24  *
25  * 512 (s+p)bytes File contents, padded out to 512-byte boundary
26  */
27 
28 /* The type flag defines the type of file */
29 #define LF_OLDNORMAL '\0' /* Normal disk file, Unix compatible */
30 #define LF_NORMAL '0' /* Normal disk file */
31 #define LF_LINK '1' /* Link to previously dumped file */
32 #define LF_SYMLINK '2' /* Symbolic link */
33 #define LF_CHR '3' /* Character special file */
34 #define LF_BLK '4' /* Block special file */
35 #define LF_DIR '5' /* Directory */
36 #define LF_FIFO '6' /* FIFO special file */
37 #define LF_CONTIG '7' /* Contiguous file */