From: Karel Zak <kzak@redhat.com>
Date: Thu, 5 Mar 2009 19:59:30 +0000 (+0100)
Subject: swapon: add error messages for lseek and write
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5dd53f43b22b4d7dcc97c633fe058723439d649d;p=util-linux

swapon: add error messages for lseek and write

Thanks to Hugh Dickins.

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

diff --git a/mount/swapon.c b/mount/swapon.c
index e342293d..55933b10 100644
--- a/mount/swapon.c
+++ b/mount/swapon.c
@@ -246,12 +246,16 @@ swap_rewrite_signature(const char *devname, unsigned int pagesize)
 		return -1;
 	}
 
-	if (lseek(fd, pagesize - SWAP_SIGNATURE_SZ, SEEK_SET) < 0)
+	if (lseek(fd, pagesize - SWAP_SIGNATURE_SZ, SEEK_SET) < 0) {
+		warn(_("%s: lseek failed"), devname);
 		goto err;
+	}
 
 	if (write(fd, (void *) SWAP_SIGNATURE,
-			SWAP_SIGNATURE_SZ) != SWAP_SIGNATURE_SZ)
+			SWAP_SIGNATURE_SZ) != SWAP_SIGNATURE_SZ) {
+		warn(_("%s: write signature failed"), devname);
 		goto err;
+	}
 
 	rc  = 0;
 err: