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polldaemon: proper error check in _poll_vg fn

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could theoretically cause NULL pointer dereference
This commit is contained in:
Ondrej Kozina 2015-03-31 11:26:53 +02:00
parent b9e6e66de1
commit 663254d7a5
1 changed files with 2 additions and 2 deletions
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4
tools/polldaemon.c
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@ -191,7 +191,7 @@ static int _wait_for_single_lv(struct cmd_context *cmd, const char *name, const
static int _poll_vg(struct cmd_context *cmd, const char *vgname,
struct volume_group *vg, struct processing_handle *handle)
{
struct daemon_parms *parms = (struct daemon_parms *) handle->custom_handle;
struct daemon_parms *parms;
struct lv_list *lvl;
struct dm_list *sls;
struct dm_str_list *sl;
@ -199,7 +199,7 @@ static int _poll_vg(struct cmd_context *cmd, const char *vgname,
const char *name;
int finished;
if (!parms) {
if (!handle || !(parms = (struct daemon_parms *) handle->custom_handle)) {
log_error(INTERNAL_ERROR "Handle is undefined.");
return ECMD_FAILED;
}