commit 7f8463fe702174bd613df9d308cc899af25ae02e

Author: Steve Dickson <steved@redhat.com>

Date:   Wed Feb 23 15:19:51 2022 -0500

    systemd: Fix format-overflow warning

    rpc-pipefs-generator.c:35:23: error: '%s' directive output between 0 and 2147483653 bytes may exceed minimum required size of 4095 [-Werror=format-overflow=]

       35 |         sprintf(path, "%s/%s", dirname, pipefs_unit);

          |                       ^

    Signed-off-by: Steve Dickson <steved@redhat.com>

diff --git a/systemd/rpc-pipefs-generator.c b/systemd/rpc-pipefs-generator.c

index c24db567..7b2bb4f7 100644

--- a/systemd/rpc-pipefs-generator.c

+++ b/systemd/rpc-pipefs-generator.c

@@ -28,11 +28,12 @@ static int generate_mount_unit(const char *pipefs_path, const char *pipefs_unit,

 {

 	char	*path;

 	FILE	*f;

+	size_t size = (strlen(dirname) + 1 + strlen(pipefs_unit) + 1);

-	path = malloc(strlen(dirname) + 1 + strlen(pipefs_unit));

+	path = malloc(size);

 	if (!path)

 		return 1;

-	sprintf(path, "%s/%s", dirname, pipefs_unit);

+	snprintf(path, size, "%s/%s", dirname, pipefs_unit);

 	f = fopen(path, "w");

 	if (!f)

 	{