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Check result of lstat

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If lstat returns errno different from ENOENT, do not use the content of
struct stat 'buf'.
This commit is contained in:
Zdenek Kabelac 2012-02-08 10:43:42 +00:00
parent 3959c60250
commit 7b408a08ef
2 changed files with 5 additions and 3 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.91 -
===================================
Do not use lstat() results when failed in _rm_link().
Remove a "waiting for another thread" log message from dmeventd plugins.
Version 2.02.90 - 1st February 2012

7
lib/activate/fs.c
View File

@ -1,6 +1,6 @@
/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
* Copyright (C) 2004-2012 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
@ -225,6 +225,7 @@ static int _mk_link(const char *dev_dir, const char *vg_name,
static int _rm_link(const char *dev_dir, const char *vg_name,
const char *lv_name, int check_udev)
{
int r;
struct stat buf;
static char lv_path[PATH_MAX];
@ -234,14 +235,14 @@ static int _rm_link(const char *dev_dir, const char *vg_name,
return 0;
}
if (lstat(lv_path, &buf) && errno == ENOENT)
if ((r = lstat(lv_path, &buf)) && errno == ENOENT)
return 1;
else if (dm_udev_get_sync_support() && udev_checking() && check_udev)
log_warn("The link %s should have been removed by udev "
"but it is still present. Falling back to "
"direct link removal.", lv_path);
if (!S_ISLNK(buf.st_mode)) {
if (r || !S_ISLNK(buf.st_mode)) {
log_error("%s not symbolic link - not removing", lv_path);
return 0;
}