Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git

[sfrench/cifs-2.6.git] / fs / cifs / dir.c

diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 16b21522e8fe1bbd06a97a7da2297e38cc8056d3..1d0ca3eaaca51f282bcec21163493fda104b5cad 100644 (file)
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -3,7 +3,7 @@
  *
  *   vfs operations that deal with dentries
  * 
- *   Copyright (C) International Business Machines  Corp., 2002,2003
+ *   Copyright (C) International Business Machines  Corp., 2002,2005
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   This library is free software; you can redistribute it and/or modify
@@ -48,13 +48,14 @@ build_path_from_dentry(struct dentry *direntry)
        struct dentry *temp;
        int namelen = 0;
        char *full_path;
-       char dirsep = CIFS_DIR_SEP(CIFS_SB(direntry->d_sb));
+       char dirsep;
 
        if(direntry == NULL)
                return NULL;  /* not much we can do if dentry is freed and
                we need to reopen the file after it was closed implicitly
                when the server crashed */
 
+       dirsep = CIFS_DIR_SEP(CIFS_SB(direntry->d_sb));
 cifs_bp_rename_retry:
        for (temp = direntry; !IS_ROOT(temp);) {
                namelen += (1 + temp->d_name.len);
@@ -138,9 +139,9 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
        cifs_sb = CIFS_SB(inode->i_sb);
        pTcon = cifs_sb->tcon;
 
-       down(&direntry->d_sb->s_vfs_rename_sem);
+       mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
        full_path = build_path_from_dentry(direntry);
-       up(&direntry->d_sb->s_vfs_rename_sem);
+       mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
        if(full_path == NULL) {
                FreeXid(xid);
                return -ENOMEM;
@@ -200,8 +201,8 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
                        (oplock & CIFS_CREATE_ACTION))
                        if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
                                CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode,
-                                       (__u64)current->euid,
-                                       (__u64)current->egid,
+                                       (__u64)current->fsuid,
+                                       (__u64)current->fsgid,
                                        0 /* dev */,
                                        cifs_sb->local_nls, 
                                        cifs_sb->mnt_cifs_flags & 
@@ -228,8 +229,15 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
                else {
                        rc = cifs_get_inode_info(&newinode, full_path,
                                                 buf, inode->i_sb,xid);
-                       if(newinode)
+                       if(newinode) {
                                newinode->i_mode = mode;
+                               if((oplock & CIFS_CREATE_ACTION) &&
+                                 (cifs_sb->mnt_cifs_flags & 
+                                    CIFS_MOUNT_SET_UID)) {
+                                       newinode->i_uid = current->fsuid;
+                                       newinode->i_gid = current->fsgid;
+                               }
+                       }
                }
 
                if (rc != 0) {
@@ -248,12 +256,10 @@ cifs_create(struct inode *inode, struct dentry *direntry, int mode,
                        CIFSSMBClose(xid, pTcon, fileHandle);
                } else if(newinode) {
                        pCifsFile =
-                          kmalloc(sizeof (struct cifsFileInfo), GFP_KERNEL);
+                          kzalloc(sizeof (struct cifsFileInfo), GFP_KERNEL);
                        
                        if(pCifsFile == NULL)
                                goto cifs_create_out;
-                       memset((char *)pCifsFile, 0,
-                              sizeof (struct cifsFileInfo));
                        pCifsFile->netfid = fileHandle;
                        pCifsFile->pid = current->tgid;
                        pCifsFile->pInode = newinode;
@@ -310,15 +316,15 @@ int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode,
        cifs_sb = CIFS_SB(inode->i_sb);
        pTcon = cifs_sb->tcon;
 
-       down(&direntry->d_sb->s_vfs_rename_sem);
+       mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
        full_path = build_path_from_dentry(direntry);
-       up(&direntry->d_sb->s_vfs_rename_sem);
+       mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
        if(full_path == NULL)
                rc = -ENOMEM;
        else if (pTcon->ses->capabilities & CAP_UNIX) {
                if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
                        rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path,
-                               mode,(__u64)current->euid,(__u64)current->egid,
+                               mode,(__u64)current->fsuid,(__u64)current->fsgid,
                                device_number, cifs_sb->local_nls,
                                cifs_sb->mnt_cifs_flags & 
                                        CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -465,12 +471,20 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry, struct name
                        direntry->d_op = &cifs_dentry_ops;
                d_add(direntry, newInode);
 
-               /* since paths are not looked up by component - the parent directories are presumed to be good here */
+               /* since paths are not looked up by component - the parent 
+                  directories are presumed to be good here */
                renew_parental_timestamps(direntry);
 
        } else if (rc == -ENOENT) {
                rc = 0;
+               direntry->d_time = jiffies;
+               if (pTcon->nocase)
+                       direntry->d_op = &cifs_ci_dentry_ops;
+               else
+                       direntry->d_op = &cifs_dentry_ops;
                d_add(direntry, NULL);
+       /*      if it was once a directory (but how can we tell?) we could do  
+                       shrink_dcache_parent(direntry); */
        } else {
                cERROR(1,("Error 0x%x on cifs_get_inode_info in lookup of %s",
                           rc,full_path));
@@ -489,21 +503,20 @@ cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
 {
        int isValid = 1;
 
-/*     lock_kernel(); *//* surely we do not want to lock the kernel for a whole network round trip which could take seconds */
-
        if (direntry->d_inode) {
                if (cifs_revalidate(direntry)) {
-                       /* unlock_kernel(); */
                        return 0;
                }
        } else {
-               cFYI(1,
-                    ("In cifs_d_revalidate with no inode but name = %s and dentry 0x%p",
-                     direntry->d_name.name, direntry));
+               cFYI(1, ("neg dentry 0x%p name = %s",
+                        direntry, direntry->d_name.name));
+               if(time_after(jiffies, direntry->d_time + HZ) || 
+                       !lookupCacheEnabled) {
+                       d_drop(direntry);
+                       isValid = 0;
+               } 
        }
 
-/*    unlock_kernel(); */
-
        return isValid;
 }