diff options
Diffstat (limited to 'source4/printing/printing_db.c')
| -rw-r--r-- | source4/printing/printing_db.c | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/source4/printing/printing_db.c b/source4/printing/printing_db.c deleted file mode 100644 index 0aa8dfafa5..0000000000 --- a/source4/printing/printing_db.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - Unix SMB/Netbios implementation. - Version 3.0 - printing backend routines - Copyright (C) Andrew Tridgell 1992-2000 - Copyright (C) Jeremy Allison 2002 - - 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 "printing.h" - -static struct tdb_print_db *print_db_head; - -/**************************************************************************** - Function to find or create the printer specific job tdb given a printername. - Limits the number of tdb's open to MAX_PRINT_DBS_OPEN. -****************************************************************************/ - -struct tdb_print_db *get_print_db_byname(const char *printername) -{ - struct tdb_print_db *p = NULL, *last_entry = NULL; - int num_open = 0; - pstring printdb_path; - BOOL done_become_root = False; - - for (p = print_db_head, last_entry = print_db_head; p; p = p->next) { - /* Ensure the list terminates... JRA. */ - SMB_ASSERT(p->next != print_db_head); - - if (p->tdb && strequal(p->printer_name, printername)) { - DLIST_PROMOTE(print_db_head, p); - p->ref_count++; - return p; - } - num_open++; - last_entry = p; - } - - /* Not found. */ - if (num_open >= MAX_PRINT_DBS_OPEN) { - /* Try and recycle the last entry. */ - DLIST_PROMOTE(print_db_head, last_entry); - - for (p = print_db_head; p; p = p->next) { - if (p->ref_count) - continue; - if (p->tdb) { - if (tdb_close(print_db_head->tdb)) { - DEBUG(0,("get_print_db: Failed to close tdb for printer %s\n", - print_db_head->printer_name )); - return NULL; - } - } - p->tdb = NULL; - p->ref_count = 0; - memset(p->printer_name, '\0', sizeof(p->printer_name)); - break; - } - if (p) { - DLIST_PROMOTE(print_db_head, p); - p = print_db_head; - } - } - - if (!p) { - /* Create one. */ - p = (struct tdb_print_db *)malloc(sizeof(struct tdb_print_db)); - if (!p) { - DEBUG(0,("get_print_db: malloc fail !\n")); - return NULL; - } - ZERO_STRUCTP(p); - DLIST_ADD(print_db_head, p); - } - - pstrcpy(printdb_path, lock_path("printing/")); - pstrcat(printdb_path, printername); - pstrcat(printdb_path, ".tdb"); - - if (geteuid() != 0) { - become_root(); - done_become_root = True; - } - - p->tdb = tdb_open_log(printdb_path, 5000, TDB_DEFAULT, O_RDWR|O_CREAT, 0600); - - if (done_become_root) - unbecome_root(); - - if (!p->tdb) { - DEBUG(0,("get_print_db: Failed to open printer backend database %s.\n", - printdb_path )); - DLIST_REMOVE(print_db_head, p); - SAFE_FREE(p); - return NULL; - } - fstrcpy(p->printer_name, printername); - p->ref_count++; - return p; -} - -/*************************************************************************** - Remove a reference count. -****************************************************************************/ - -void release_print_db( struct tdb_print_db *pdb) -{ - pdb->ref_count--; - SMB_ASSERT(pdb->ref_count >= 0); -} - -/*************************************************************************** - Close all open print db entries. -****************************************************************************/ - -void close_all_print_db(void) -{ - struct tdb_print_db *p = NULL, *next_p = NULL; - - for (p = print_db_head; p; p = next_p) { - next_p = p->next; - - if (p->tdb) - tdb_close(p->tdb); - DLIST_REMOVE(print_db_head, p); - ZERO_STRUCTP(p); - SAFE_FREE(p); - } -} - - -/**************************************************************************** - Fetch and clean the pid_t record list for all pids interested in notify - messages. data needs freeing on exit. -****************************************************************************/ - -TDB_DATA get_printer_notify_pid_list(TDB_CONTEXT *tdb, const char *printer_name, BOOL cleanlist) -{ - TDB_DATA data; - size_t i; - - ZERO_STRUCT(data); - - data = tdb_fetch_by_string( tdb, NOTIFY_PID_LIST_KEY ); - - if (!data.dptr) { - ZERO_STRUCT(data); - return data; - } - - if (data.dsize % 8) { - DEBUG(0,("get_printer_notify_pid_list: Size of record for printer %s not a multiple of 8 !\n", printer_name )); - tdb_delete_by_string(tdb, NOTIFY_PID_LIST_KEY ); - SAFE_FREE(data.dptr); - ZERO_STRUCT(data); - return data; - } - - if (!cleanlist) - return data; - - /* - * Weed out all dead entries. - */ - - for( i = 0; i < data.dsize; i += 8) { - pid_t pid = (pid_t)IVAL(data.dptr, i); - - if (pid == sys_getpid()) - continue; - - /* Entry is dead if process doesn't exist or refcount is zero. */ - - while ((i < data.dsize) && ((IVAL(data.dptr, i + 4) == 0) || !process_exists(pid))) { - - /* Refcount == zero is a logic error and should never happen. */ - if (IVAL(data.dptr, i + 4) == 0) { - DEBUG(0,("get_printer_notify_pid_list: Refcount == 0 for pid = %u printer %s !\n", - (unsigned int)pid, printer_name )); - } - - if (data.dsize - i > 8) - memmove( &data.dptr[i], &data.dptr[i+8], data.dsize - i - 8); - data.dsize -= 8; - } - } - - return data; -} - - |