From: Michael Tremer <michael.tremer@ipfire.org>
Date: Fri, 16 Dec 2022 10:23:48 +0000 (+0000)
Subject: jail: epoll: Only register for the operations we actually need
X-Git-Tag: 0.9.29~416
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e48beb249173285d9039d66e2de6591b943a887c;p=pakfire.git

jail: epoll: Only register for the operations we actually need

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/libpakfire/jail.c b/src/libpakfire/jail.c
index c53dce035..20785045e 100644
--- a/src/libpakfire/jail.c
+++ b/src/libpakfire/jail.c
@@ -641,8 +641,6 @@ static int pakfire_jail_wait(struct pakfire_jail* jail, struct pakfire_jail_exec
 		goto ERROR;
 	}
 
-	ev.events = EPOLLIN|EPOLLOUT|EPOLLHUP;
-
 	// Turn file descriptors into non-blocking mode and add them to epoll()
 	for (unsigned int i = 0; i < sizeof(fds) / sizeof(*fds); i++) {
 		int fd = fds[i];
@@ -651,6 +649,13 @@ static int pakfire_jail_wait(struct pakfire_jail* jail, struct pakfire_jail_exec
 		if (fd <= 0)
 			continue;
 
+		ev.events = EPOLLHUP;
+
+		if (fd == stdin)
+			ev.events |= EPOLLOUT;
+		else
+			ev.events |= EPOLLIN;
+
 		// Read flags
 		int flags = fcntl(fd, F_GETFL, 0);