diff options
Diffstat (limited to 'src/include/pgtar.h')
| -rw-r--r-- | src/include/pgtar.h | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/src/include/pgtar.h b/src/include/pgtar.h index 0a875903a71..0f08dc0c2ca 100644 --- a/src/include/pgtar.h +++ b/src/include/pgtar.h @@ -11,6 +11,10 @@ * *------------------------------------------------------------------------- */ +#ifndef PG_TAR_H +#define PG_TAR_H + +#define TAR_BLOCK_SIZE 512 enum tarError { @@ -19,8 +23,23 @@ enum tarError TAR_SYMLINK_TOO_LONG }; -extern enum tarError tarCreateHeader(char *h, const char *filename, const char *linktarget, - pgoff_t size, mode_t mode, uid_t uid, gid_t gid, time_t mtime); +extern enum tarError tarCreateHeader(char *h, const char *filename, + const char *linktarget, pgoff_t size, + mode_t mode, uid_t uid, gid_t gid, + time_t mtime); extern uint64 read_tar_number(const char *s, int len); extern void print_tar_number(char *s, int len, uint64 val); extern int tarChecksum(char *header); + +/* + * Compute the number of padding bytes required for an entry in a tar + * archive. We must pad out to a multiple of TAR_BLOCK_SIZE. Since that's + * a power of 2, we can use TYPEALIGN(). + */ +static inline size_t +tarPaddingBytesRequired(size_t len) +{ + return TYPEALIGN(TAR_BLOCK_SIZE, len) - len; +} + +#endif |