Overhaul sqfs_istream_t/sqfs_ostream_t error handling

Report an error number from the implementations, change the users to
forward that error number (which also means libtar write header/link
now returns an error code) and all subsequent binaries to use
sqfs_perror() instead of relying on the function to print an error
internally.

Also, make sure to preserve errno/GetLastError() in the implementations
and print out a stringified error in sqfs_perror() if the error code
indicates an I/O error.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/tar/src/iterator.c b/lib/tar/src/iterator.c
index 93c931c..ed35b73 100644
--- a/lib/tar/src/iterator.c
+++ b/lib/tar/src/iterator.c
@@ -231,7 +231,7 @@ retry:
 
 	return 0;
 fail:
-	tar->state = ret < 0 ? SQFS_ERROR_IO : 1;
+	tar->state = ret < 0 ? ret : 1;
 	return tar->state;
 }