TLA  Line data    Source code

       1                 : /*-------------------------------------------------------------------------
       2                 :  *
       3                 :  * pgtar.h
       4                 :  *    Functions for manipulating tarfile datastructures (src/port/tar.c)
       5                 :  *
       6                 :  *
       7                 :  * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
       8                 :  * Portions Copyright (c) 1994, Regents of the University of California
       9                 :  *
      10                 :  * src/include/pgtar.h
      11                 :  *
      12                 :  *-------------------------------------------------------------------------
      13                 :  */
      14                 : #ifndef PG_TAR_H
      15                 : #define PG_TAR_H
      16                 : 
      17                 : #define     TAR_BLOCK_SIZE  512
      18                 : 
      19                 : enum tarError
      20                 : {
      21                 :     TAR_OK = 0,
      22                 :     TAR_NAME_TOO_LONG,
      23                 :     TAR_SYMLINK_TOO_LONG
      24                 : };
      25                 : 
      26                 : extern enum tarError tarCreateHeader(char *h, const char *filename,
      27                 :                                      const char *linktarget, pgoff_t size,
      28                 :                                      mode_t mode, uid_t uid, gid_t gid,
      29                 :                                      time_t mtime);
      30                 : extern uint64 read_tar_number(const char *s, int len);
      31                 : extern void print_tar_number(char *s, int len, uint64 val);
      32                 : extern int  tarChecksum(char *header);
      33                 : 
      34                 : /*
      35                 :  * Compute the number of padding bytes required for an entry in a tar
      36                 :  * archive. We must pad out to a multiple of TAR_BLOCK_SIZE. Since that's
      37                 :  * a power of 2, we can use TYPEALIGN().
      38                 :  */
      39                 : static inline size_t
      40 CBC      461376 : tarPaddingBytesRequired(size_t len)
      41                 : {
      42          461376 :     return TYPEALIGN(TAR_BLOCK_SIZE, len) - len;
      43                 : }
      44                 : 
      45                 : #endif