Index: namei_ops.c
===================================================================
RCS file: /cvs/openafs/src/vol/namei_ops.c,v
retrieving revision 1.2
diff -u -r1.2 namei_ops.c
--- namei_ops.c	2000/11/04 10:06:23	1.2
+++ namei_ops.c	2001/03/27 06:49:36
@@ -22,6 +22,12 @@
 #include <sys/file.h>
 #include <sys/param.h>
 #include <lock.h>
+#ifdef AFS_AIX_ENV
+#include <sys/lockf.h>
+#endif
+#ifdef AFS_SUN5_ENV
+#include <unistd.h>
+#endif
 #include <afs/afsutil.h>
 #include <lwp.h>
 #include "nfs.h"
@@ -805,7 +811,11 @@
     namei_GetLCOffsetAndIndexFromIno(ino, &offset, &index);
 
     if (lockit) {
+#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
+	if (lockf(h->fd_fd, F_LOCK, 0) < 0)
+#else
 	if (flock(h->fd_fd, LOCK_EX)<0)
+#endif
 	    return -1;
     }
 
@@ -820,7 +830,11 @@
 
  bad_getLinkByte:
     if (lockit)
+#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
+	lockf(h->fd_fd, F_ULOCK, 0);
+#else
 	flock(h->fd_fd, LOCK_UN);
+#endif
     return -1;
 }
 
@@ -834,13 +848,16 @@
     short row;
     int code;
 
-
     fdP = IH_OPEN(ih);
     if (fdP == NULL)
 	return -1;
 
     /* Only one manipulates at a time. */
+#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
+    if (lockf(fdP->fd_fd, F_LOCK, 0) < 0) {
+#else
     if (flock(fdP->fd_fd, LOCK_EX)<0) {
+#endif
 	FDH_REALLYCLOSE(fdP);
 	return -1;
     }
@@ -877,12 +894,20 @@
 	goto badGetFreeTag;
     }
     FDH_SYNC(fdP);
+#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
+    lockf(fdP->fd_fd, F_ULOCK, 0);
+#else
     flock(fdP->fd_fd, LOCK_UN);
+#endif
     FDH_REALLYCLOSE(fdP);
     return col;;
 
  badGetFreeTag:
+#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
+    lockf(fdP->fd_fd, F_ULOCK, 0);
+#else
     flock(fdP->fd_fd, LOCK_UN);
+#endif
     FDH_REALLYCLOSE(fdP);
     return -1;
 }
@@ -902,9 +927,12 @@
 
     namei_GetLCOffsetAndIndexFromIno(ino, &offset, &index);
 
-
     if (!locked) {
+#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
+	if (lockf(fdP->fd_fd, F_LOCK, 0) < 0) {
+#else
 	if (flock(fdP->fd_fd, LOCK_EX)<0) {
+#endif
 	    return -1;
 	}
     }
@@ -943,7 +971,11 @@
 
     
 bad_SetLinkCount:
+#if defined(AFS_AIX_ENV) || defined(AFS_SUN5_ENV)
+    lockf(fdP->fd_fd, F_ULOCK, 0);
+#else
     flock(fdP->fd_fd, LOCK_UN);
+#endif
 
     return code;
 }