From: Eric Biggers <ebiggers3@gmail.com>
Date: Tue, 27 May 2014 02:22:23 +0000 (-0500)
Subject: resource.c:  Don't call lseek() if not necessary
X-Git-Tag: v1.7.0~81
X-Git-Url: https://wimlib.net/git/?p=wimlib;a=commitdiff_plain;h=4a6f090f05ef6959a547b3d40940897d879ce050

resource.c:  Don't call lseek() if not necessary

To be reading a pipable resource from a pipe, is_pipable must be set in
the 'struct wim_resource_spec', so check that first before calling
filedes_is_seekable().
---

diff --git a/src/resource.c b/src/resource.c
index 5c0225ab..d2a4c309 100644
--- a/src/resource.c
+++ b/src/resource.c
@@ -169,7 +169,7 @@ read_compressed_wim_resource(const struct wim_resource_spec * const rspec,
 	struct filedes * const in_fd = &rspec->wim->in_fd;
 
 	/* Determine if we're reading a pipable resource from a pipe or not.  */
-	const bool is_pipe_read = !filedes_is_seekable(in_fd);
+	const bool is_pipe_read = (rspec->is_pipable && !filedes_is_seekable(in_fd));
 
 	/* Determine if the chunk table is in an altenate format.  */
 	const bool alt_chunk_table = (rspec->flags & WIM_RESHDR_FLAG_PACKED_STREAMS)