From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 5 Dec 2016 17:16:47 +0000 (+0100)
Subject: trace: use the cloned environment pointer
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=794669c9ea00f4fc14a14899bcd2c9ea518c1a69;p=project%2Fprocd.git

trace: use the cloned environment pointer

Fixes an issue where it would overwrite the first environment variable
with the preload one

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/trace/trace.c b/trace/trace.c
index 662010e..fdffaba 100644
--- a/trace/trace.c
+++ b/trace/trace.c
@@ -187,9 +187,9 @@ int main(int argc, char **argv, char **envp)
 
 		_envp = calloc(envc, sizeof(char *));
 		memcpy(&_envp[1], _envp, envc * sizeof(char *));
-		*envp = preload;
+		*_envp = preload;
 
-		ret = execve(_argv[0], _argv, envp);
+		ret = execve(_argv[0], _argv, _envp);
 		ERROR("failed to exec %s: %s\n", _argv[0], strerror(errno));
 
 		free(_argv);