[lvm-devel] master - thin: fix read size compare
Zdenek Kabelac
zkabelac at fedoraproject.org
Tue Feb 23 11:26:00 UTC 2016
Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=f501f083bf1ea9f60a8b18aa9b5d59f3459ee4a6
Commit: f501f083bf1ea9f60a8b18aa9b5d59f3459ee4a6
Parent: 05eb87ca2defb6e7e7bd9759bab566de7cb6e3f0
Author: Zdenek Kabelac <zkabelac at redhat.com>
AuthorDate: Tue Feb 23 12:11:15 2016 +0100
Committer: Zdenek Kabelac <zkabelac at redhat.com>
CommitterDate: Tue Feb 23 12:22:18 2016 +0100
thin: fix read size compare
Fix the compare with 'unsigned' sizeof() and error read -1 result.
So the read error is correctly recognized.
---
WHATS_NEW | 1 +
lib/activate/dev_manager.c | 2 +-
2 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/WHATS_NEW b/WHATS_NEW
index f15d885..355712c 100644
--- a/WHATS_NEW
+++ b/WHATS_NEW
@@ -1,5 +1,6 @@
Version 2.02.144 -
=====================================
+ Fir read error detection when checking for uninitialized thin-pool header.
Fix error path for internal error in lvmetad vg lookup code.
Version 2.02.143 - 21st February 2016
diff --git a/lib/activate/dev_manager.c b/lib/activate/dev_manager.c
index 2826218..15d6bb9 100644
--- a/lib/activate/dev_manager.c
+++ b/lib/activate/dev_manager.c
@@ -1841,7 +1841,7 @@ static int _pool_callback(struct dm_tree_node *node,
return 0;
}
/* let's assume there is no problem to read 64 bytes */
- if (read(fd, buf, sizeof(buf)) < sizeof(buf)) {
+ if (read(fd, buf, sizeof(buf)) < (int)sizeof(buf)) {
log_sys_error("read", argv[args]);
if (close(fd))
log_sys_error("close", argv[args]);
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