From: Eugene Syromyatnikov <evgsyr@gmail.com>
Date: Sat, 26 Aug 2017 22:24:37 +0000 (+0200)
Subject: dm: return RVAL_DECODED instead of 0 if we can't decode command
X-Git-Tag: v4.19~49
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9885c967a4f77576c9b37af6b8605ab74a30447b;p=strace

dm: return RVAL_DECODED instead of 0 if we can't decode command

Return RVAL_DECODED if we can't decode command in order to avoid being
called on exiting.

* dm.c (dm_ioctl): Return RVAL_DECODED instead of 0 if command can't be
decoded.
---

diff --git a/dm.c b/dm.c
index bf122d94..327a5e1a 100644
--- a/dm.c
+++ b/dm.c
@@ -578,7 +578,7 @@ dm_ioctl(struct tcb *const tcp, const unsigned int code, const kernel_ulong_t ar
 	case DM_DEV_SET_GEOMETRY:
 		return dm_known_ioctl(tcp, code, arg);
 	default:
-		return 0;
+		return RVAL_DECODED;
 	}
 }
 
@@ -587,7 +587,7 @@ dm_ioctl(struct tcb *const tcp, const unsigned int code, const kernel_ulong_t ar
 int
 dm_ioctl(struct tcb *const tcp, const unsigned int code, const kernel_ulong_t arg)
 {
-	return 0;
+	return RVAL_DECODED;
 }
 
 # endif /* DM_VERSION_MAJOR == 4 */