include/share.h

   1 #ifndef UST_SHARE_H
   2 #define UST_SHARE_H
   3
   4 /* write() */
   5 #include <unistd.h>
   6
   7 /* send() */
   8 #include <sys/types.h>
   9 #include <sys/socket.h>
  10
  11 #include <errno.h>
  12
  13 /* This write is patient because it restarts if it was incomplete.
  14  */
  15
  16 static __inline__ ssize_t patient_write(int fd, const void *buf, size_t count)
  17 {
  18         const char *bufc = (const char *) buf;
  19         int result;
  20
  21         for(;;) {
  22                 result = write(fd, bufc, count);
  23                 if(result == -1 && errno == EINTR) {
  24                         continue;
  25                 }
  26                 if(result <= 0) {
  27                         return result;
  28                 }
  29                 count -= result;
  30                 bufc += result;
  31
  32                 if(count == 0) {
  33                         break;
  34                 }
  35         }
  36
  37         return bufc-(const char *)buf;
  38 }
  39
  40 static __inline__ ssize_t patient_send(int fd, const void *buf, size_t count, int flags)
  41 {
  42         const char *bufc = (const char *) buf;
  43         int result;
  44
  45         for(;;) {
  46                 result = send(fd, bufc, count, flags);
  47                 if(result == -1 && errno == EINTR) {
  48                         continue;
  49                 }
  50                 if(result <= 0) {
  51                         return result;
  52                 }
  53                 count -= result;
  54                 bufc += result;
  55
  56                 if(count == 0) {
  57                         break;
  58                 }
  59         }
  60
  61         return bufc-(const char *)buf;
  62 }
  63
  64 #endif /* UST_SHARE_H */