tstring.c - plan9port - [fork] Plan 9 from user space
  HTML git clone git://src.adamsgaard.dk/plan9port
   DIR Log
   DIR Files
   DIR Refs
   DIR README
   DIR LICENSE
       ---
       tstring.c (736B)
       ---
            1 #include <u.h>
            2 #include <libc.h>
            3 #include <venti.h>
            4 
            5 int
            6 vtputstring(Packet *p, char *s)
            7 {
            8         uchar buf[2];
            9         int n;
           10 
           11         if(s == nil){
           12                 werrstr("null string in packet");
           13                 return -1;
           14         }
           15         n = strlen(s);
           16         if(n > VtMaxStringSize){
           17                 werrstr("string too long in packet");
           18                 return -1;
           19         }
           20         buf[0] = n>>8;
           21         buf[1] = n;
           22         packetappend(p, buf, 2);
           23         packetappend(p, (uchar*)s, n);
           24         return 0;
           25 }
           26 
           27 int
           28 vtgetstring(Packet *p, char **ps)
           29 {
           30         uchar buf[2];
           31         int n;
           32         char *s;
           33 
           34         if(packetconsume(p, buf, 2) < 0)
           35                 return -1;
           36         n = (buf[0]<<8) + buf[1];
           37         if(n > VtMaxStringSize) {
           38                 werrstr("string too long in packet");
           39                 return -1;
           40         }
           41         s = vtmalloc(n+1);
           42         if(packetconsume(p, (uchar*)s, n) < 0){
           43                 vtfree(s);
           44                 return -1;
           45         }
           46         s[n] = 0;
           47         *ps = s;
           48         return 0;
           49 }