e8c1d0fe7c
*alen has to be initialized to the size of the buffer by the caller, and we are supposed to put the real size of the address in there, but not copy more than the original *alen value (truncate).
57 lines
929 B
C
57 lines
929 B
C
/* posix */
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <string.h>
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#include <errno.h>
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/* bsd extensions */
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#include <sys/uio.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <sys/un.h>
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#include "priv.h"
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int
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getsockname(int fd, struct sockaddr *addr, int *alen)
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{
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Rock *r;
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int len, olen;
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struct sockaddr_un *lunix;
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r = _sock_findrock(fd, 0);
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if(r == 0){
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errno = ENOTSOCK;
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return -1;
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}
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len = 0;
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switch(r->domain){
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case PF_INET:
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case PF_INET6:
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_sock_ingetaddr(r, &r->addr, &len, "local");
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break;
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case PF_UNIX:
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lunix = (struct sockaddr_un*)&r->addr;
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len = &lunix->sun_path[strlen(lunix->sun_path)] - (char*)lunix;
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break;
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default:
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errno = EAFNOSUPPORT;
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return -1;
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}
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if(alen != 0){
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olen = *alen;
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*alen = len;
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if(olen < len)
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len = olen;
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}
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if(addr != 0 && len > 0)
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memmove(addr, &r->addr, len);
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return 0;
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}
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