[RFC PATCH v3 4/9] libcamera: process: Return error if already running

[Barnabás Pőcze]

Returning 0 when a running process is already managed can be
confusing since the parameters might be completely different,
causing the caller to mistakenly assume that the program it
specified has been started.

Signed-off-by: Barnabás Pőcze <barnabas.pocze at ideasonboard.com>
---
 src/libcamera/process.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libcamera/process.cpp b/src/libcamera/process.cpp
index aa9e8f519..716523acc 100644
--- a/src/libcamera/process.cpp
+++ b/src/libcamera/process.cpp
@@ -241,7 +241,7 @@ int Process::start(const std::string &path,
 	int ret;
 
 	if (pid_ > 0)
-		return 0;
+		return -EBUSY;
 
 	int childPid = fork();
 	if (childPid == -1) {
-- 
2.49.0