diff options
Diffstat (limited to 'libgui/msg.c')
| -rw-r--r-- | libgui/msg.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libgui/msg.c b/libgui/msg.c index 3f58267..677ad52 100644 --- a/libgui/msg.c +++ b/libgui/msg.c @@ -1,12 +1,15 @@ // MIT License, Copyright (c) 2021 Marvin Borner #include <assert.h> +#include <errno.h> #include <msg.h> #include <print.h> #include <sys.h> int msg_send(u32 pid, enum message_type type, void *data, u32 size) { + if (!data) + return -EFAULT; assert((signed)pid != -1 && size >= sizeof(struct message_header)); char path[32] = { 0 }; sprintf(path, "/proc/%d/msg", pid); |