rpm2cpio: handle unseekable input correctly

function                                             old     new   delta
data_skip                                             14      20      +6
seek_by_jump                                          67      72      +5
data_align                                            81      84      +3
seek_by_read                                          20      19      -1
skip_header                                           99      94      -5
rpm2cpio_main                                        183     177      -6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/3 up/down: 14/-12)              Total: 2 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

4 files changed, 8 insertions, 8 deletions

diff --git a/archival/libunarchive/data_align.c b/archival/libunarchive/data_align.c
index 9f2e8432f..0c8542bf5 100644
--- a/archival/libunarchive/data_align.c
+++ b/archival/libunarchive/data_align.c
@@ -10,6 +10,6 @@ void FAST_FUNC data_align(archive_handle_t *archive_handle, unsigned boundary)
 {
         unsigned skip_amount = (boundary - (archive_handle->offset % boundary)) % boundary;
 
-        archive_handle->seek(archive_handle, skip_amount);
+        archive_handle->seek(archive_handle->src_fd, skip_amount);
         archive_handle->offset += skip_amount;
 }
diff --git a/archival/libunarchive/data_skip.c b/archival/libunarchive/data_skip.c
index 438750fe5..06d3dced4 100644
--- a/archival/libunarchive/data_skip.c
+++ b/archival/libunarchive/data_skip.c
@@ -8,5 +8,5 @@
 
 void FAST_FUNC data_skip(archive_handle_t *archive_handle)
 {
-        archive_handle->seek(archive_handle, archive_handle->file_header->size);
+        archive_handle->seek(archive_handle->src_fd, archive_handle->file_header->size);
 }
diff --git a/archival/libunarchive/seek_by_jump.c b/archival/libunarchive/seek_by_jump.c
index 0a259c963..7181cb3ce 100644
--- a/archival/libunarchive/seek_by_jump.c
+++ b/archival/libunarchive/seek_by_jump.c
@@ -6,13 +6,13 @@
 #include "libbb.h"
 #include "unarchive.h"
 
-void FAST_FUNC seek_by_jump(const archive_handle_t *archive_handle, unsigned amount)
+void FAST_FUNC seek_by_jump(int fd, off_t amount)
 {
         if (amount
-         && lseek(archive_handle->src_fd, (off_t) amount, SEEK_CUR) == (off_t) -1
+         && lseek(fd, amount, SEEK_CUR) == (off_t) -1
         ) {
                 if (errno == ESPIPE)
-                        seek_by_read(archive_handle, amount);
+                        seek_by_read(fd, amount);
                 else
                         bb_perror_msg_and_die("seek failure");
         }
diff --git a/archival/libunarchive/seek_by_read.c b/archival/libunarchive/seek_by_read.c
index 2326a7512..af65e5d85 100644
--- a/archival/libunarchive/seek_by_read.c
+++ b/archival/libunarchive/seek_by_read.c
@@ -9,8 +9,8 @@
 /*  If we are reading through a pipe, or from stdin then we can't lseek,
  *  we must read and discard the data to skip over it.
  */
-void FAST_FUNC seek_by_read(const archive_handle_t *archive_handle, unsigned jump_size)
+void FAST_FUNC seek_by_read(int fd, off_t amount)
 {
-        if (jump_size)
-                bb_copyfd_exact_size(archive_handle->src_fd, -1, jump_size);
+        if (amount)
+                bb_copyfd_exact_size(fd, -1, amount);
 }