skalibs

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siovec_scatter.c (429B)

      1 /* ISC license. */
      2 
      3 #include <sys/uio.h>
      4 #include <string.h>
      5 #include <skalibs/siovec.h>
      6 
      7 size_t siovec_scatter (struct iovec const *v, unsigned int n, char const *s, size_t len)
      8 {
      9   size_t w = 0 ;
     10   unsigned int i = 0 ;
     11   for (; i < n && w < len ; i++)
     12   {
     13     size_t chunklen = v[i].iov_len ;
     14     if (w + chunklen > len) chunklen = len - w ;
     15     memmove(v[i].iov_base, s + w, chunklen) ;
     16     w += chunklen ;
     17   }
     18   return w ;
     19 }