skalibs

Mirror/fork of https://skarnet.org/software/skalibs/
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ipc_local.c (593B)

      1 /* ISC license. */
      2 
      3 #include <skalibs/nonposix.h>
      4 #include <sys/socket.h>
      5 #include <sys/un.h>
      6 #include <string.h>
      7 
      8 #include <skalibs/bytestr.h>
      9 #include <skalibs/socket.h>
     10 
     11 int ipc_local (int s, char *p, size_t l, int *trunc)
     12 {
     13   struct sockaddr_un sa ;
     14   socklen_t dummy = sizeof sa ;
     15   memset(&sa, 0, sizeof sa) ;
     16   if (getsockname(s, (struct sockaddr *)&sa, &dummy) == -1) return -1 ;
     17   dummy = byte_chr(sa.sun_path, dummy, 0) ;
     18   *trunc = 1 ;
     19   if (!l) return 0 ;
     20   if (l < (dummy + 1)) dummy = l - 1 ;
     21   else *trunc = 0 ;
     22   memcpy(p, sa.sun_path, dummy) ;
     23   p[dummy] = 0 ;
     24   return 0 ;
     25 }