diff options
Diffstat (limited to 'source3/smbd/open.c')
| -rw-r--r-- | source3/smbd/open.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/source3/smbd/open.c b/source3/smbd/open.c index 258e463ecf..b23da55542 100644 --- a/source3/smbd/open.c +++ b/source3/smbd/open.c @@ -649,6 +649,20 @@ files_struct *open_file_shared(connection_struct *conn,char *fname, SMB_STRUCT_S num_share_modes = open_mode_check(conn, fname, dev, inode, share_mode, &flags, &oplock_request, &all_current_opens_are_level_II); if(num_share_modes == -1) { + + /* + * This next line is a subtlety we need for MS-Access. If a file open will + * fail due to share permissions and also for security (access) + * reasons, we need to return the access failed error, not the + * share error. This means we must attempt to open the file anyway + * in order to get the UNIX access error - even if we're going to + * fail the open for share reasons. This is bad, as we're burning + * another fd if there are existing locks but there's nothing else + * we can do. We also ensure we're not going to create or tuncate + * the file as we only want an access decision at this stage. JRA. + */ + open_file(fsp,conn,fname,psbuf,flags|(flags2&~(O_TRUNC|O_CREAT)),mode); + unlock_share_entry(conn, dev, inode); file_free(fsp); return NULL; @@ -676,14 +690,6 @@ files_struct *open_file_shared(connection_struct *conn,char *fname, SMB_STRUCT_S return NULL; } - /* not that we ignore failure for the following. It is - basically a hack for NFS, and NFS will never set one of - these only read them. Nobody but Samba can ever set a deny - mode and we have already checked our more authoritative - locking database for permission to set this deny mode. If - the kernel refuses the operations then the kernel is wrong */ - kernel_flock(fsp, deny_mode); - /* * Deal with the race condition where two smbd's detect the file doesn't * exist and do the create at the same time. One of them will win and @@ -710,6 +716,14 @@ files_struct *open_file_shared(connection_struct *conn,char *fname, SMB_STRUCT_S */ } + /* note that we ignore failure for the following. It is + basically a hack for NFS, and NFS will never set one of + these only read them. Nobody but Samba can ever set a deny + mode and we have already checked our more authoritative + locking database for permission to set this deny mode. If + the kernel refuses the operations then the kernel is wrong */ + kernel_flock(fsp, deny_mode); + /* * At this point onwards, we can guarentee that the share entry * is locked, whether we created the file or not, and that the |