mirror of
https://github.com/aljazceru/lightning.git
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f8344baf64
ccan/autodata, ccan/breakpoint, ccan/crypto/hmac_sha256, ccan/crypto/hkdf_sha256, ccan/fdpass and ccan/io/fdpass. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
66 lines
1.2 KiB
Plaintext
66 lines
1.2 KiB
Plaintext
#include "config.h"
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#include <stdio.h>
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#include <string.h>
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/**
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* fdpass - routines to pass a file descriptor over a socket.
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*
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* This code handles all the hairy details of fd passing.
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*
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* License: CC0 (Public domain)
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* Maintainer: Rusty Russell <rusty@rustcorp.com.au>
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*
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* Example:
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* // Outputs hello!
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* #include <ccan/fdpass/fdpass.h>
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* #include <sys/socket.h>
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* #include <sys/un.h>
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* #include <stdio.h>
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* #include <stdlib.h>
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* #include <unistd.h>
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*
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* static void child(int sockfd)
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* {
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* char buffer[6];
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* int newfd = fdpass_recv(sockfd);
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* read(newfd, buffer, sizeof(buffer));
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* printf("%.*s\n", (int)sizeof(buffer), buffer);
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* exit(0);
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* }
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*
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* static void parent(int sockfd)
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* {
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* int pfds[2];
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*
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* pipe(pfds);
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* fdpass_send(sockfd, pfds[0]);
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* close(pfds[0]);
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* write(pfds[1], "hello!", 6);
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* exit(0);
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* }
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*
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* int main(void)
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* {
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* int sv[2];
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*
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* socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
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* if (fork() == 0)
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* child(sv[0]);
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* else
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* parent(sv[1]);
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* }
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*/
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int main(int argc, char *argv[])
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{
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/* Expect exactly one argument */
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if (argc != 2)
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return 1;
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if (strcmp(argv[1], "depends") == 0)
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return 0;
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return 1;
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}
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