| Date: Sun, 29 Feb 2004 22:54:49 +0000
Threaded read9pmsg.
Diffstat:
A src/libthread/read9pmsg.c | 32 +++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+), 0 deletions(-)
--- |
| t@@ -0,0 +1,32 @@
+#include
+#include
+#include
+#include
+
+int
+threadread9pmsg(int fd, void *abuf, uint n)
+{
+ int m, len;
+ uchar *buf;
+
+ buf = abuf;
+
+ /* read count */
+ m = threadreadn(fd, buf, BIT32SZ);
+ if(m != BIT32SZ){
+ if(m < 0)
+ return -1;
+ return 0;
+ }
+
+ len = GBIT32(buf);
+ if(len <= BIT32SZ || len > n){
+ werrstr("bad length in 9P2000 message header");
+ return -1;
+ }
+ len -= BIT32SZ;
+ m = threadreadn(fd, buf+BIT32SZ, len);
+ if(m < len)
+ return 0;
+ return BIT32SZ+m;
+} |