libvirt/2b32735a-virCommand-env.patch
2012-10-11 14:35:56 +00:00

39 lines
1.3 KiB
Diff

commit 2b32735af480055e27400068d27364d521071117
Author: Richard W.M. Jones <rjones@redhat.com>
Date: Mon Sep 24 17:35:47 2012 +0100
command: Change virCommandAddEnv so it replaces existing environment variables.
Index: libvirt-0.10.2/src/util/command.c
===================================================================
--- libvirt-0.10.2.orig/src/util/command.c
+++ libvirt-0.10.2/src/util/command.c
@@ -985,11 +985,26 @@ virCommandNonblockingFDs(virCommandPtr c
}
/* Add an environment variable to the cmd->env list. 'env' is a
- * string like "name=value".
+ * string like "name=value". If the named environment variable is
+ * already set, then it is replaced in the list.
*/
static inline void
virCommandAddEnv(virCommandPtr cmd, char *env)
{
+ size_t namelen;
+ size_t i;
+
+ /* Search for the name in the existing environment. */
+ namelen = strcspn(env, "=");
+ for (i = 0; i < cmd->nenv; ++i) {
+ /* + 1 because we want to match the '=' character too. */
+ if (STREQLEN(cmd->env[i], env, namelen + 1)) {
+ VIR_FREE(cmd->env[i]);
+ cmd->env[i] = env;
+ return;
+ }
+ }
+
/* Arg plus trailing NULL. */
if (VIR_RESIZE_N(cmd->env, cmd->maxenv, cmd->nenv, 1 + 1) < 0) {
VIR_FREE(env);