From 6d87fea4dd7152df4a4605a3846c3bf10f869e0c Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Wed, 9 Dec 2009 06:55:19 -0500
Subject: [PATCH] gen_init_cpio: fixed fwrite warning
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On compilers with security warnings enabled by default, we get:
usr/gen_init_cpio.c: In function ‘cpio_mkfile’:
usr/gen_init_cpio.c:357: warning: ignoring return value of ‘fwrite’,
declared with attribute warn_unused_result
So check the return value and handle errors accordingly.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
---
usr/gen_init_cpio.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/usr/gen_init_cpio.c b/usr/gen_init_cpio.c
index 83b3dde1a83b7..b2b3c2d1cf8bd 100644
--- a/usr/gen_init_cpio.c
+++ b/usr/gen_init_cpio.c
@@ -354,7 +354,10 @@ static int cpio_mkfile(const char *name, const char *location,
push_pad();
if (size) {
- fwrite(filebuf, size, 1, stdout);
+ if (fwrite(filebuf, size, 1, stdout) != 1) {
+ fprintf(stderr, "writing filebuf failed\n");
+ goto error;
+ }
offset += size;
push_pad();
}
--
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