flocksim.h   flocksim.h 
/* ========================================================================
* Copyright 1988-2006 University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
*
* ========================================================================
*/
/* /*
* Program: flock() emulation via fcntl() locking * Program: flock() emulation via fcntl() locking
* *
* Author: Mark Crispin * Author: Mark Crispin
* Networks and Distributed Computing * Networks and Distributed Computing
* Computing & Communications * Computing & Communications
* University of Washington * University of Washington
* Administration Building, AG-44 * Administration Building, AG-44
* Seattle, WA 98195 * Seattle, WA 98195
* Internet: MRC@CAC.Washington.EDU * Internet: MRC@CAC.Washington.EDU
* *
* Date: 10 April 2001 * Date: 10 April 2001
* Last Edited: 22 January 2002 * Last Edited: 30 August 2006
*
* The IMAP toolkit provided in this Distribution is
* Copyright 2002 University of Washington.
* The full text of our legal notices is contained in the file called
* CPYRIGHT, included with this Distribution.
*/ */
#define flock flocksim /* use ours instead of theirs */ #define flock flocksim /* use ours instead of theirs */
#undef LOCK_SH #undef LOCK_SH
#define LOCK_SH 1 /* shared lock */ #define LOCK_SH 1 /* shared lock */
#undef LOCK_EX #undef LOCK_EX
#define LOCK_EX 2 /* exclusive lock */ #define LOCK_EX 2 /* exclusive lock */
#undef LOCK_NB #undef LOCK_NB
#define LOCK_NB 4 /* no blocking */ #define LOCK_NB 4 /* no blocking */
skipping to change at line 47 skipping to change at line 55
safe_delete (dtb,stream,mbx) : (*dtb->mbxdel) (stream,mbx) safe_delete (dtb,stream,mbx) : (*dtb->mbxdel) (stream,mbx)
#undef SAFE_RENAME #undef SAFE_RENAME
#define SAFE_RENAME(dtb,stream,old,newname) (dtb->flags & DR_LOCKING) ? \ #define SAFE_RENAME(dtb,stream,old,newname) (dtb->flags & DR_LOCKING) ? \
safe_rename (dtb,stream,old,newname) : (*dtb->mbxren) (stream,old,newname ) safe_rename (dtb,stream,old,newname) : (*dtb->mbxren) (stream,old,newname )
#undef SAFE_STATUS #undef SAFE_STATUS
#define SAFE_STATUS(dtb,stream,mbx,bits) (dtb->flags & DR_LOCKING) ? \ #define SAFE_STATUS(dtb,stream,mbx,bits) (dtb->flags & DR_LOCKING) ? \
safe_status (dtb,stream,mbx,bits) : (*dtb->status) (stream,mbx,bits) safe_status (dtb,stream,mbx,bits) : (*dtb->status) (stream,mbx,bits)
#undef SAFE_SCAN_CONTENTS #undef SAFE_SCAN_CONTENTS
#define SAFE_SCAN_CONTENTS(dtb,name,contents,csiz,fsiz) \ #define SAFE_SCAN_CONTENTS(dtb,name,contents,csiz,fsiz) \
(!dtb || (dtb->flags & DR_LOCKING)) ? \ (!dtb || (dtb->flags & DR_LOCKING)) ? \
safe_scan_contents (name,contents,csiz,fsiz) : \ safe_scan_contents (dtb,name,contents,csiz,fsiz) : \
dummy_scan_contents (name,contents,csiz,fsiz) scan_contents (dtb,name,contents,csiz,fsiz)
#undef SAFE_COPY #undef SAFE_COPY
#define SAFE_COPY(dtb,stream,seq,mbx,bits) (dtb->flags & DR_LOCKING) ? \ #define SAFE_COPY(dtb,stream,seq,mbx,bits) (dtb->flags & DR_LOCKING) ? \
safe_copy (dtb,stream,seq,mbx,bits) : (*dtb->copy) (stream,seq,mbx,bits) safe_copy (dtb,stream,seq,mbx,bits) : (*dtb->copy) (stream,seq,mbx,bits)
#undef SAFE_APPEND #undef SAFE_APPEND
#define SAFE_APPEND(dtb,stream,mbx,af,data) (dtb->flags & DR_LOCKING) ? \ #define SAFE_APPEND(dtb,stream,mbx,af,data) (dtb->flags & DR_LOCKING) ? \
safe_append (dtb,stream,mbx,af,data) : (*dtb->append) (stream,mbx,af,data ) safe_append (dtb,stream,mbx,af,data) : (*dtb->append) (stream,mbx,af,data )
#undef MM_EXISTS #undef MM_EXISTS
#define MM_EXISTS (lockslavep ? slave_exists : mm_exists) #define MM_EXISTS (lockslavep ? slave_exists : mm_exists)
#undef MM_EXPUNGED #undef MM_EXPUNGED
skipping to change at line 85 skipping to change at line 93
#define MM_FATAL (lockslavep ? slave_fatal : mm_fatal) #define MM_FATAL (lockslavep ? slave_fatal : mm_fatal)
#undef MM_APPEND #undef MM_APPEND
#define MM_APPEND(af) (lockslavep ? slave_append : (*af)) #define MM_APPEND(af) (lockslavep ? slave_append : (*af))
/* Function prototypes */ /* Function prototypes */
int flocksim (int fd,int operation); int flocksim (int fd,int operation);
long safe_delete (DRIVER *dtb,MAILSTREAM *stream,char *mbx); long safe_delete (DRIVER *dtb,MAILSTREAM *stream,char *mbx);
long safe_rename (DRIVER *dtb,MAILSTREAM *stream,char *old,char *newname); long safe_rename (DRIVER *dtb,MAILSTREAM *stream,char *old,char *newname);
long safe_status (DRIVER *dtb,MAILSTREAM *stream,char *mbx,long flags); long safe_status (DRIVER *dtb,MAILSTREAM *stream,char *mbx,long flags);
long safe_scan_contents (char *name,char *contents,unsigned long csiz, long safe_scan_contents (DRIVER *dtb,char *name,char *contents,
unsigned long fsiz); unsigned long csiz,unsigned long fsiz);
long safe_copy (DRIVER *dtb,MAILSTREAM *stream,char *seq,char *mbx,long fla gs); long safe_copy (DRIVER *dtb,MAILSTREAM *stream,char *seq,char *mbx,long fla gs);
long safe_append (DRIVER *dtb,MAILSTREAM *stream,char *mbx,append_t af, long safe_append (DRIVER *dtb,MAILSTREAM *stream,char *mbx,append_t af,
void *data); void *data);
void slave_exists (MAILSTREAM *stream,unsigned long number); void slave_exists (MAILSTREAM *stream,unsigned long number);
void slave_expunged (MAILSTREAM *stream,unsigned long number); void slave_expunged (MAILSTREAM *stream,unsigned long number);
void slave_flags (MAILSTREAM *stream,unsigned long number); void slave_flags (MAILSTREAM *stream,unsigned long number);
void slave_notify (MAILSTREAM *stream,char *string,long errflg); void slave_notify (MAILSTREAM *stream,char *string,long errflg);
void slave_status (MAILSTREAM *stream,char *mailbox,MAILSTATUS *status); void slave_status (MAILSTREAM *stream,char *mailbox,MAILSTATUS *status);
void slave_log (char *string,long errflg); void slave_log (char *string,long errflg);
 End of changes. 4 change blocks. 
10 lines changed or deleted 18 lines changed or added

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