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96107564e2
the kernel wrongly expects the cmsg length field to be size_t instead of socklen_t. in order to work around the issue, we have to impose a length limit and copy to a local buffer. the length limit should be more than sufficient for any real-world use; these headers are only used for passing file descriptors and permissions between processes over unix sockets.
18 lines
239 B
C
18 lines
239 B
C
struct msghdr
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{
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void *msg_name;
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socklen_t msg_namelen;
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struct iovec *msg_iov;
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int msg_iovlen;
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void *msg_control;
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socklen_t msg_controllen;
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int msg_flags;
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};
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struct cmsghdr
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{
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socklen_t cmsg_len;
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int cmsg_level;
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int cmsg_type;
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};
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