[PATCH] gen_init_cpio: fixed fwrite warning

[Mike Frysinger]

On compilers with security warnings enabled by default, we get:

usr/gen_init_cpio.c: In function âcpio_mkfileâ:
usr/gen_init_cpio.c:357: warning: ignoring return value of âfwriteâ,
                                  declared with attribute warn_unused_result

So check the return value and handle errors accordingly.

Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx>
---
 usr/gen_init_cpio.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/usr/gen_init_cpio.c b/usr/gen_init_cpio.c
index 83b3dde..b2b3c2d 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();
 		}
-- 
1.6.5.5

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