From: Karel Zak <kzak@redhat.com>
Date: Thu, 21 Jun 2012 06:28:49 +0000 (+0200)
Subject: lib/sysfs: use warn_unused_result for sysfs_init()
X-Git-Tag: v2.22-rc1~249
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1aae31c0488299023346bd2b4f8a8046a8546a8c;p=thirdparty%2Futil-linux.git

lib/sysfs: use warn_unused_result for sysfs_init()

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/include/sysfs.h b/include/sysfs.h
index 8604aca5e7..19cf9e8e04 100644
--- a/include/sysfs.h
+++ b/include/sysfs.h
@@ -32,8 +32,8 @@ extern char *sysfs_devno_path(dev_t devno, char *buf, size_t bufsiz);
 extern char *sysfs_devno_to_devpath(dev_t devno, char *buf, size_t bufsiz);
 extern dev_t sysfs_devname_to_devno(const char *name, const char *parent);
 
-extern int sysfs_init(struct sysfs_cxt *cxt, dev_t devno,
-				struct sysfs_cxt *parent);
+extern int sysfs_init(struct sysfs_cxt *cxt, dev_t devno, struct sysfs_cxt *parent)
+					__attribute__ ((warn_unused_result));
 extern void sysfs_deinit(struct sysfs_cxt *cxt);
 
 extern DIR *sysfs_opendir(struct sysfs_cxt *cxt, const char *attr);
diff --git a/lib/sysfs.c b/lib/sysfs.c
index b4fb7cdda6..ad90c19c83 100644
--- a/lib/sysfs.c
+++ b/lib/sysfs.c
@@ -622,7 +622,8 @@ int main(int argc, char *argv[])
 	printf("PARTITION: %s\n",
 		sysfs_devno_has_attribute(devno, "partition") ? "YES" : "NOT");
 
-	sysfs_init(&cxt, devno, NULL);
+	if (sysfs_init(&cxt, devno, NULL))
+		return EXIT_FAILURE;
 
 	len = sysfs_readlink(&cxt, NULL, path, sizeof(path) - 1);
 	if (len > 0) {