fast track m_adj from tail didn't adjust pkthdr.len

[unix-history] / usr / src / sys / nfs / nfs_syscalls.c

diff --git a/usr/src/sys/nfs/nfs_syscalls.c b/usr/src/sys/nfs/nfs_syscalls.c
index 1ad338f..c375d25 100644 (file)
--- a/usr/src/sys/nfs/nfs_syscalls.c
+++ b/usr/src/sys/nfs/nfs_syscalls.c
@@ -17,7 +17,7 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *

- *     @(#)nfs_syscalls.c      7.1 (Berkeley) %G%
+ *     @(#)nfs_syscalls.c      7.2 (Berkeley) %G%

  */
 
 #include "param.h"
  */
 
 #include "param.h"


@@ -31,6 +31,7 @@
 #include "proc.h"
 #include "uio.h"
 #include "malloc.h"
 #include "proc.h"
 #include "uio.h"
 #include "malloc.h"

+#include "buf.h"

 #include "mbuf.h"
 #include "socket.h"
 #include "socketvar.h"
 #include "mbuf.h"
 #include "socket.h"
 #include "socketvar.h"


@@ -40,6 +41,8 @@
 /* Global defs. */
 extern u_long nfs_prog, nfs_vers;
 extern int (*nfsrv_procs[NFS_NPROCS])();
 /* Global defs. */
 extern u_long nfs_prog, nfs_vers;
 extern int (*nfsrv_procs[NFS_NPROCS])();

+extern struct buf nfs_bqueue;
+extern int nfs_iodwant;

 struct file *getsock();
 
 /*
 struct file *getsock();
 
 /*


@@ -195,3 +198,42 @@ nfssvc()
                m_freem(nam);
        }
 }
                m_freem(nam);
        }
 }

+
+#ifndef notyet
+/*
+ * Nfs pseudo system call for asynchronous i/o daemons.
+ * These babies just pretend to be disk interrupt service routines
+ * for client nfs. They are mainly here for read ahead
+ * Never returns unless it fails or gets killed
+ */
+async_daemon()
+{
+       register struct buf *bp, *dp;
+       int error;
+
+       /*
+        * Must be super user
+        */
+       if (error = suser(u.u_cred, &u.u_acflag))
+               RETURN (error);
+       dp = &nfs_bqueue;
+       /*
+        * Just loop arround doin our stuff until SIGKILL
+        */
+       for (;;) {
+               while (dp->b_actf == NULL) {
+                       nfs_iodwant++;
+                       sleep((caddr_t)&nfs_iodwant, PZERO+1);
+               }
+               /* Take one off the end of the list */
+               bp = dp->b_actl;
+               if (bp->b_actl == dp) {
+                       dp->b_actf = dp->b_actl = (struct buf *)0;
+               } else {
+                       dp->b_actl = bp->b_actl;
+                       bp->b_actl->b_actf = dp;
+               }
+               (void) nfs_doio(bp);
+       }
+}
+#endif