yrashk

void api::OpenFiles(RiruFile *files, size_t count) {
    struct sockaddr_un addr{};
    int fd;
    socklen_t socklen;
    uint8_t *data;
    uint32_t data_size;
    int32_t reply[count];
    uint32_t reply_size;
    std::vector<int> fds;

yrashk

As tested on Linux:

• An SCM_RIGHTS ancillary message is "attached" to the range of data bytes sent in the same sendmsg() call.
• However, as always, recvmsg() calls on the receiving end don't necessarily map 1:1 to sendmsg() calls. Messages can be coalesced or split.
• The recvmsg() call that receives the first byte of the ancillary message's byte range also receives the ancillary message itself.
• To prevent multiple ancillary messages being delivered