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thin: fix read size compare

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Fix the compare with 'unsigned' sizeof() and error read -1 result.
So the read error is correctly recognized.
This commit is contained in:
Zdenek Kabelac 2016-02-23 12:11:15 +01:00
parent 05eb87ca2d
commit f501f083bf
2 changed files with 2 additions and 1 deletions
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1
WHATS_NEW
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@ -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

2
lib/activate/dev_manager.c
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@ -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]);