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Diffstat (limited to 'source/smbd/notify.c')
| -rw-r--r-- | source/smbd/notify.c | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/source/smbd/notify.c b/source/smbd/notify.c deleted file mode 100644 index 9adf827c794..00000000000 --- a/source/smbd/notify.c +++ /dev/null @@ -1,225 +0,0 @@ -/* - Unix SMB/CIFS implementation. - change notify handling - Copyright (C) Andrew Tridgell 2000 - Copyright (C) Jeremy Allison 1994-1998 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include "includes.h" - -static struct cnotify_fns *cnotify; - -/**************************************************************************** - This is the structure to queue to implement NT change - notify. It consists of smb_size bytes stored from the - transact command (to keep the mid, tid etc around). - Plus the fid to examine and notify private data. -*****************************************************************************/ - -struct change_notify { - struct change_notify *next, *prev; - files_struct *fsp; - connection_struct *conn; - uint32 flags; - char request_buf[smb_size]; - void *change_data; -}; - -static struct change_notify *change_notify_list; - -/**************************************************************************** - Setup the common parts of the return packet and send it. -*****************************************************************************/ - -static void change_notify_reply_packet(char *inbuf, NTSTATUS error_code) -{ - char outbuf[smb_size+38]; - - memset(outbuf, '\0', sizeof(outbuf)); - construct_reply_common(inbuf, outbuf); - - ERROR_NT(error_code); - - /* - * Seems NT needs a transact command with an error code - * in it. This is a longer packet than a simple error. - */ - set_message(outbuf,18,0,False); - - if (!send_smb(smbd_server_fd(),outbuf)) - exit_server("change_notify_reply_packet: send_smb failed."); -} - -/**************************************************************************** - Remove an entry from the list and free it, also closing any - directory handle if necessary. -*****************************************************************************/ - -static void change_notify_remove(struct change_notify *cnbp) -{ - cnotify->remove_notify(cnbp->change_data); - DLIST_REMOVE(change_notify_list, cnbp); - ZERO_STRUCTP(cnbp); - SAFE_FREE(cnbp); -} - -/**************************************************************************** - Delete entries by fnum from the change notify pending queue. -*****************************************************************************/ - -void remove_pending_change_notify_requests_by_fid(files_struct *fsp) -{ - struct change_notify *cnbp, *next; - - for (cnbp=change_notify_list; cnbp; cnbp=next) { - next=cnbp->next; - if (cnbp->fsp->fnum == fsp->fnum) { - change_notify_remove(cnbp); - } - } -} - -/**************************************************************************** - Delete entries by mid from the change notify pending queue. Always send reply. -*****************************************************************************/ - -void remove_pending_change_notify_requests_by_mid(int mid) -{ - struct change_notify *cnbp, *next; - - for (cnbp=change_notify_list; cnbp; cnbp=next) { - next=cnbp->next; - if(SVAL(cnbp->request_buf,smb_mid) == mid) { - change_notify_reply_packet(cnbp->request_buf,NT_STATUS_CANCELLED); - change_notify_remove(cnbp); - } - } -} - -/**************************************************************************** - Delete entries by filename and cnum from the change notify pending queue. - Always send reply. -*****************************************************************************/ - -void remove_pending_change_notify_requests_by_filename(files_struct *fsp) -{ - struct change_notify *cnbp, *next; - - for (cnbp=change_notify_list; cnbp; cnbp=next) { - next=cnbp->next; - /* - * We know it refers to the same directory if the connection number and - * the filename are identical. - */ - if((cnbp->fsp->conn == fsp->conn) && strequal(cnbp->fsp->fsp_name,fsp->fsp_name)) { - change_notify_reply_packet(cnbp->request_buf,NT_STATUS_CANCELLED); - change_notify_remove(cnbp); - } - } -} - -/**************************************************************************** - Return true if there are pending change notifies. -****************************************************************************/ - -int change_notify_timeout(void) -{ - return cnotify->select_time; -} - -/**************************************************************************** - Process the change notify queue. Note that this is only called as root. - Returns True if there are still outstanding change notify requests on the - queue. -*****************************************************************************/ - -BOOL process_pending_change_notify_queue(time_t t) -{ - struct change_notify *cnbp, *next; - uint16 vuid; - - for (cnbp=change_notify_list; cnbp; cnbp=next) { - next=cnbp->next; - - vuid = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID : SVAL(cnbp->request_buf,smb_uid); - - if (cnotify->check_notify(cnbp->conn, vuid, cnbp->fsp->fsp_name, cnbp->flags, cnbp->change_data, t)) { - DEBUG(10,("process_pending_change_notify_queue: dir %s changed !\n", cnbp->fsp->fsp_name )); - change_notify_reply_packet(cnbp->request_buf,STATUS_NOTIFY_ENUM_DIR); - change_notify_remove(cnbp); - } - } - - return (change_notify_list != NULL); -} - -/**************************************************************************** - Now queue an entry on the notify change list. - We only need to save smb_size bytes from this incoming packet - as we will always by returning a 'read the directory yourself' - error. -****************************************************************************/ - -BOOL change_notify_set(char *inbuf, files_struct *fsp, connection_struct *conn, uint32 flags) -{ - struct change_notify *cnbp; - - if((cnbp = (struct change_notify *)malloc(sizeof(*cnbp))) == NULL) { - DEBUG(0,("change_notify_set: malloc fail !\n" )); - return -1; - } - - ZERO_STRUCTP(cnbp); - - memcpy(cnbp->request_buf, inbuf, smb_size); - cnbp->fsp = fsp; - cnbp->conn = conn; - cnbp->flags = flags; - cnbp->change_data = cnotify->register_notify(conn, fsp->fsp_name, flags); - - if (!cnbp->change_data) { - SAFE_FREE(cnbp); - return False; - } - - DLIST_ADD(change_notify_list, cnbp); - - /* Push the MID of this packet on the signing queue. */ - srv_defer_sign_response(SVAL(inbuf,smb_mid)); - - return True; -} - -/**************************************************************************** - Initialise the change notify subsystem. -****************************************************************************/ - -BOOL init_change_notify(void) -{ -#if HAVE_KERNEL_CHANGE_NOTIFY - if (lp_kernel_change_notify()) - cnotify = kernel_notify_init(); -#endif - if (!cnotify) cnotify = hash_notify_init(); - - if (!cnotify) { - DEBUG(0,("Failed to init change notify system\n")); - return False; - } - - return True; -} |