25 lines
930 B
Plaintext
25 lines
930 B
Plaintext
recv
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====
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:title: Shellcode Compiler Runtime
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---------------------------------------------
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ssize_t recv(int fd, void* buf, size_t n, int flags);
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---------------------------------------------
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Reads `n` bytes from the socket `fd`, and places the result in `buf`. Returns the number of bytes read, or
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the negation of the error code on error. It is possible for the number of bytes read to be smaller than the number
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of bytes requested.
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IMPORTANT: If the system call is interrupted, this function will return `-EINTR`. This differs from most C runtimes,
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where `-1` is returned with `errno` set to `EINTR`. As this runtime does not have `errno`, callers should check
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for `-EINTR` and a result less than zero in the error checking code.
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See also
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--------
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link:recv_all.html[recv_all],
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link:recvfrom.html[recvfrom],
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link:send.html[send],
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link:send_all.html[send_all],
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link:send_string.html[send_string],
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link:sendto.html[sendto]
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