954dbd3a0
Ian Wienand
2011-07-29
Subject
tar: ignore file size (assume 0) for hardlinks
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archival/libarchive/get_header_tar.c+13 -3
| @@ -348,10 +348,20 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle) | |
| /* Set bits 12-15 of the files mode */ | |
| /* (typeflag was not trashed because chksum does not use getOctal) */ | |
| switch (tar.typeflag) { | |
| - | /* busybox identifies hard links as being regular files with 0 size and a link name */ |
| - | case '1': |
| + | case '1': /* hardlink */ |
| + | /* we mark hardlinks as regular files with zero size and a link name */ |
| file_header->mode |= S_IFREG; | |
| - | break; |
| + | /* on size of link fields from star(4) |
| + | * ... For tar archives written by pre POSIX.1-1988 |
| + | * implementations, the size field usually contains the size of |
| + | * the file and needs to be ignored as no data may follow this |
| + | * header type. For POSIX.1- 1988 compliant archives, the size |
| + | * field needs to be 0. For POSIX.1-2001 compliant archives, |
| + | * the size field may be non zero, indicating that file data is |
| + | * included in the archive. |
| + | * i.e; always assume this is zero for safety. |
| + | */ |
| + | goto size0; |
| case '7': | |
| /* case 0: */ | |
| case '0': | |