share/share.h

   1 #ifndef UST_SHARE_H
   2 #define UST_SHARE_H
   3
   4 #include <unistd.h>
   5 #include <errno.h>
   6
   7 /* This write is patient because it restarts if it was incomplete.
   8  */
   9
  10 static inline ssize_t patient_write(int fd, const void *buf, size_t count)
  11 {
  12         const char *bufc = (const char *) buf;
  13         int result;
  14
  15         for(;;) {
  16                 result = write(fd, bufc, count);
  17                 if(result == -1 && errno == EINTR) {
  18                         continue;
  19                 }
  20                 if(result <= 0) {
  21                         return result;
  22                 }
  23                 count -= result;
  24                 bufc += result;
  25
  26                 if(count == 0) {
  27                         break;
  28                 }
  29         }
  30
  31         return bufc-(const char *)buf;
  32 }
  33
  34 #endif /* UST_SHARE_H */