kernel patch that allows logging file accesses via nfs

1 files changed, 61 insertions, 0 deletions

diff --git a/move/tools/kernel-nfsd.patch b/move/tools/kernel-nfsd.patch
new file mode 100644
index 000000000..8f56eb697
--- /dev/null
+++ b/move/tools/kernel-nfsd.patch
@@ -0,0 +1,61 @@
+--- linux-2.4.22/fs/nfsd/vfs.c.pix	2003-10-17 16:27:36.000000000 +0200
++++ linux-2.4.22/fs/nfsd/vfs.c	2003-10-24 17:36:58.000000000 +0200
+@@ -418,6 +418,41 @@
+ 
+ 
+ 
++static unsigned int i2a(char* dest,unsigned int x) {
++  register unsigned int tmp=x;
++  register unsigned int len=0;
++  if (x>=100) { *dest++=tmp/100+'0'; tmp=tmp%100; ++len; }
++  if (x>=10) { *dest++=tmp/10+'0'; tmp=tmp%10; ++len; }
++  *dest++=tmp+'0';
++  return len+1;
++}
++
++static char *inet_ntoa_r(struct in_addr in,char* buf) {
++  unsigned int len;
++  unsigned char *ip=(unsigned char*)∈
++  len=i2a(buf,ip[0]); buf[len]='.'; ++len;
++  len+=i2a(buf+ len,ip[1]); buf[len]='.'; ++len;
++  len+=i2a(buf+ len,ip[2]); buf[len]='.'; ++len;
++  len+=i2a(buf+ len,ip[3]); buf[len]=0;
++  return buf;
++}
++
++static char *inet_ntoa(struct in_addr in) {
++  static char buf[20];
++  return inet_ntoa_r(in,buf);
++}
++
++static void printk_debug_file_access(struct svc_rqst *rqstp, struct dentry *dentry) {
++  printk("nfsd (%s): ", inet_ntoa(rqstp->rq_addr.sin_addr));
++  while (1) {
++    if (dentry == dentry->d_parent) break;
++    printk("%s/", dentry->d_name.name);
++    dentry = dentry->d_parent;
++  }
++  printk("\n");
++}
++
++
+ /*
+  * Open an existing file or directory.
+  * The access argument indicates the type of open (read/write/lock)
+@@ -489,6 +524,8 @@
+ 			atomic_dec(&filp->f_count);
+ 		}
+ 	}
++	if (err == 0) printk_debug_file_access(rqstp, dentry);
++
+ out_nfserr:
+ 	if (err)
+ 		err = nfserrno(err);
+@@ -1101,6 +1138,7 @@
+ 		goto out_nfserr;
+ 	*lenp = err;
+ 	err = 0;
++	printk_debug_file_access(rqstp, dentry);
+ out:
+ 	return err;
+