diff options
Diffstat (limited to 'arch/um/drivers/port_user.c')
| -rw-r--r-- | arch/um/drivers/port_user.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/um/drivers/port_user.c b/arch/um/drivers/port_user.c index 3e32351dadad..3c62ae81df62 100644 --- a/arch/um/drivers/port_user.c +++ b/arch/um/drivers/port_user.c @@ -5,6 +5,7 @@ #include <stdio.h> #include <stdlib.h> +#include <string.h> #include <errno.h> #include <termios.h> #include <unistd.h> @@ -179,6 +180,17 @@ int port_connection(int fd, int *socket, int *pid_out) if (new < 0) return -errno; + err = os_access(argv[2], X_OK); + if (err < 0) { + printk(UM_KERN_ERR "port_connection : error accessing port-helper " + "executable at %s: %s\n", argv[2], strerror(-err)); + if (env == NULL) + printk(UM_KERN_ERR "Set UML_PORT_HELPER environment " + "variable to path to uml-utilities port-helper " + "binary\n"); + goto out_close; + } + err = os_pipe(socket, 0, 0); if (err < 0) goto out_close; |