Honour the USTAR prefix field, this enables a 155 byte path length plus the normal 100 byte filename.

The catch is gnu tar cannot create archives that use the prefix field, you need to use s-tar.

1 files changed, 6 insertions, 2 deletions

diff --git a/archival/libunarchive/get_header_tar.c b/archival/libunarchive/get_header_tar.c
index 07b9ae36f..668fa5a2c 100644
--- a/archival/libunarchive/get_header_tar.c
+++ b/archival/libunarchive/get_header_tar.c
@@ -71,7 +71,7 @@ file_header_t *get_header_tar(FILE *tar_stream)
         }
 
         /* If there is no filename its an empty header, skip it */
-        if (xstrlen(tar.formated.name) == 0) {
+        if (tar.formated.name[0] == 0) {
                 return(NULL);
         }
 
@@ -90,7 +90,11 @@ file_header_t *get_header_tar(FILE *tar_stream)
 
         /* convert to type'ed variables */
         tar_entry = xcalloc(1, sizeof(file_header_t));
-        tar_entry->name = xstrdup(tar.formated.name);
+        if (tar.formated.prefix[0] == 0) {
+                tar_entry->name = xstrdup(tar.formated.name);
+        } else {
+                tar_entry->name = concat_path_file(tar.formated.prefix, tar.formated.name);
+        }
 
         tar_entry->mode = strtol(tar.formated.mode, NULL, 8);
 #ifdef CONFIG_FEATURE_TAR_OLD_FORMAT