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tar: ignore file size (assume 0) for hardlinks

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Signed-off-by: Ian Wienand <ianw@vmware.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Ian Wienand 2011-07-29 08:33:47 +02:00 committed by Denys Vlasenko
parent 67905e2d7c
commit 954dbd3a00
1 changed files with 13 additions and 3 deletions
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16
archival/libarchive/get_header_tar.c
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@ -348,10 +348,20 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle)
/* Set bits 12-15 of the files mode */ /* Set bits 12-15 of the files mode */
/* (typeflag was not trashed because chksum does not use getOctal) */ /* (typeflag was not trashed because chksum does not use getOctal) */
switch (tar.typeflag) { switch (tar.typeflag) {
/* busybox identifies hard links as being regular files with 0 size and a link name */ case '1': /* hardlink */
case '1': /* we mark hardlinks as regular files with zero size and a link name */
file_header->mode |= S_IFREG; 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 '7':
/* case 0: */ /* case 0: */
case '0': case '0':