PostgreSQL Source Code git master
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 */