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Update libiso_msgs with new Thomas changes.

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release-1.5.4.branch
Vreixo Formoso 15 years ago
parent 57025a614d
commit 88eea232aa
3 changed files with 182 additions and 60 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 94
      src/libiso_msgs.c
  2. 146
      src/libiso_msgs.h
  3. 2
      src/libisofs.h

94
src/libiso_msgs.c
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@ -1,7 +1,8 @@
/* libiso_msgs
Message handling facility of libiso.
Copyright (C) 2006 Thomas Schmitt <scdbackup@gmx.net>, provided under GPL
Copyright (C) 2006 - 2008 Thomas Schmitt <scdbackup@gmx.net>,
provided under GPL version 2
*/
#include <stdio.h>
@ -39,7 +40,7 @@ static int libiso_msgs_item_new(struct libiso_msgs_item **item,
if(ret==0)
o->timestamp= tv.tv_sec+0.000001*tv.tv_usec;
o->process_id= getpid();
o->driveno= -1;
o->origin= -1;
o->severity= LIBISO_MSGS_SEV_ALL;
o->priority= LIBISO_MSGS_PRIO_ZERO;
o->error_code= 0;
@ -108,12 +109,12 @@ int libiso_msgs_item_get_msg(struct libiso_msgs_item *item,
int libiso_msgs_item_get_origin(struct libiso_msgs_item *item,
double *timestamp, pid_t *process_id, int *driveno,
double *timestamp, pid_t *process_id, int *origin,
int flag)
{
*timestamp= item->timestamp;
*process_id= item->process_id;
*driveno= item->driveno;
*origin= item->origin;
return(1);
}
@ -137,6 +138,7 @@ int libiso_msgs_new(struct libiso_msgs **m, int flag)
(*m)= o= (struct libiso_msgs *) malloc(sizeof(struct libiso_msgs));
if(o==NULL)
return(-1);
o->refcount= 1;
o->oldest= NULL;
o->youngest= NULL;
o->count= 0;
@ -152,6 +154,36 @@ int libiso_msgs_new(struct libiso_msgs **m, int flag)
}
static int libiso_msgs_lock(struct libiso_msgs *m, int flag)
{
#ifndef LIBISO_MSGS_SINGLE_THREADED
int ret;
ret= pthread_mutex_lock(&(m->lock_mutex));
if(ret!=0)
return(0);
#endif
return(1);
}
static int libiso_msgs_unlock(struct libiso_msgs *m, int flag)
{
#ifndef LIBISO_MSGS_SINGLE_THREADED
int ret;
ret= pthread_mutex_unlock(&(m->lock_mutex));
if(ret!=0)
return(0);
#endif
return(1);
}
int libiso_msgs_destroy(struct libiso_msgs **m, int flag)
{
struct libiso_msgs *o;
@ -160,6 +192,14 @@ int libiso_msgs_destroy(struct libiso_msgs **m, int flag)
o= *m;
if(o==NULL)
return(0);
if(o->refcount > 1) {
if(libiso_msgs_lock(*m,0)<=0)
return(-1);
o->refcount--;
libiso_msgs_unlock(*m,0);
*m= NULL;
return(1);
}
#ifndef LIBISO_MSGS_SINGLE_THREADED
if(pthread_mutex_destroy(&(o->lock_mutex))!=0) {
@ -178,43 +218,27 @@ int libiso_msgs_destroy(struct libiso_msgs **m, int flag)
}
int libiso_msgs_set_severities(struct libiso_msgs *m, int queue_severity,
int print_severity, const char *print_id, int flag)
int libiso_msgs_refer(struct libiso_msgs **pt, struct libiso_msgs *m, int flag)
{
m->queue_severity= queue_severity;
m->print_severity= print_severity;
strncpy(m->print_id,print_id,80);
m->print_id[80]= 0;
return(1);
}
static int libiso_msgs_lock(struct libiso_msgs *m, int flag)
{
#ifndef LIBISO_MSGS_SINGLE_THREADED
int ret;
ret= pthread_mutex_lock(&(m->lock_mutex));
if(ret!=0)
if(libiso_msgs_lock(m,0)<=0)
return(0);
#endif
m->refcount++;
*pt= m;
libiso_msgs_unlock(m,0);
return(1);
}
static int libiso_msgs_unlock(struct libiso_msgs *m, int flag)
int libiso_msgs_set_severities(struct libiso_msgs *m, int queue_severity,
int print_severity, char *print_id, int flag)
{
#ifndef LIBISO_MSGS_SINGLE_THREADED
int ret;
ret= pthread_mutex_unlock(&(m->lock_mutex));
if(ret!=0)
if(libiso_msgs_lock(m,0)<=0)
return(0);
#endif
m->queue_severity= queue_severity;
m->print_severity= print_severity;
strncpy(m->print_id,print_id,80);
m->print_id[80]= 0;
libiso_msgs_unlock(m,0);
return(1);
}
@ -287,7 +311,7 @@ int libiso_msgs__sev_to_text(int severity, char **severity_name,
}
int libiso_msgs_submit(struct libiso_msgs *m, int driveno, int error_code,
int libiso_msgs_submit(struct libiso_msgs *m, int origin, int error_code,
int severity, int priority, char *msg_text,
int os_errno, int flag)
{
@ -325,7 +349,7 @@ int libiso_msgs_submit(struct libiso_msgs *m, int driveno, int error_code,
ret= libiso_msgs_item_new(&item,m->youngest,0);
if(ret<=0)
goto failed;
item->driveno= driveno;
item->origin= origin;
item->error_code= error_code;
item->severity= severity;
item->priority= priority;

146
src/libiso_msgs.h
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@ -1,8 +1,8 @@
/* libiso_msgs
Message handling facility of libisofs.
Copyright (C) 2006-2007 Thomas Schmitt <scdbackup@gmx.net>,
provided under GPL
Message handling facility of libiso.
Copyright (C) 2006-2008 Thomas Schmitt <scdbackup@gmx.net>,
provided under GPL version 2
*/
@ -23,7 +23,7 @@ struct libiso_msgs_item {
double timestamp;
pid_t process_id;
int driveno;
int origin;
int severity;
int priority;
@ -43,6 +43,8 @@ struct libiso_msgs_item {
struct libiso_msgs {
int refcount;
struct libiso_msgs_item *oldest;
struct libiso_msgs_item *youngest;
int count;
@ -68,6 +70,31 @@ struct libiso_msgs {
#ifndef LIBISO_MSGS_H_INTERNAL
/* Architectural aspects */
/*
libiso_msgs is designed to serve in libraries which want to offer their
applications a way to control the output of library messages. It shall be
incorporated by an owner, i.e. a software entity which encloses the code
of the .c file.
Owner of libdax_msgs is libburn. A fully compatible variant named libiso_msgs
is owned by libisofs and can get generated by a script of the libburn
project: libburn/libiso_msgs_to_xyz_msgs.sh .
Reason: One cannot link two owners of the same variant together because
both would offer the same functions to the linker. For that situation one
has to create a compatible variant as it is done for libisofs.
Compatible variants may get plugged together by call combinations like
burn_set_messenger(iso_get_messenger());
A new variant would demand a _set_messenger() function if it has to work
with libisofs. If only libburn is planned as link partner then a simple
_get_messenger() does suffice.
Take care to shutdown libburn before its provider of the *_msgs object
gets shut down.
*/
/* Public Opaque Handles */
/** A pointer to this is a opaque handle to a message handling facility */
@ -86,7 +113,7 @@ struct libiso_msgs_item;
/* It is well advisable to let applications select severities via strings and
forwarded functions libiso_msgs__text_to_sev(), libiso_msgs__sev_to_text().
These macros are for use by libdax/libburn only.
These macros are for use by the owner of libiso_msgs.
*/
/** Use this to get messages of any severity. Do not use for submitting.
@ -118,7 +145,7 @@ struct libiso_msgs_item;
*/
#define LIBISO_MSGS_SEV_SORRY 0x60000000
/** An error message which puts the whole operation of libdax in question
/** An error message which puts the whole operation of the program in question
*/
#define LIBISO_MSGS_SEV_FATAL 0x70000000
@ -134,7 +161,7 @@ struct libiso_msgs_item;
/* Registered Priorities */
/* Priorities are to be used by libburn/libdax only. */
/* Priorities are to be selected by the programmers and not by the user. */
#define LIBISO_MSGS_PRIO_ZERO 0x00000000
#define LIBISO_MSGS_PRIO_LOW 0x10000000
@ -146,12 +173,23 @@ struct libiso_msgs_item;
#define LIBISO_MSGS_PRIO_NEVER 0x7fffffff
/* Origin numbers of libburn drives may range from 0 to 1048575 */
#define LIBISO_MSGS_ORIGIN_DRIVE_BASE 0
#define LIBISO_MSGS_ORIGIN_DRIVE_TOP 0xfffff
/* Origin numbers of libisofs images may range from 1048575 to 2097152 */
#define LIBISO_MSGS_ORIGIN_IMAGE_BASE 0x100000
#define LIBISO_MSGS_ORIGIN_IMAGE_TOP 0x1fffff
/* Public Functions */
/* Calls initiated from inside libdax/libburn */
/* Calls initiated from inside the direct owner (e.g. from libburn) */
/** Create new empty message handling facility with queue.
/** Create new empty message handling facility with queue and issue a first
official reference to it.
@param flag Bitfield for control purposes (unused yet, submit 0)
@return >0 success, <=0 failure
*/
@ -160,18 +198,37 @@ int libiso_msgs_new(struct libiso_msgs **m, int flag);
/** Destroy a message handling facility and all its eventual messages.
The submitted pointer gets set to NULL.
Actually only the last destroy call of all offical references to the object
will really dispose it. All others just decrement the reference counter.
Call this function only with official reference pointers obtained by
libiso_msgs_new() or libiso_msgs_refer(), and only once per such pointer.
@param flag Bitfield for control purposes (unused yet, submit 0)
@return 1 for success, 0 for pointer to NULL
@return 1 for success, 0 for pointer to NULL, -1 for fatal error
*/
int libiso_msgs_destroy(struct libiso_msgs **m, int flag);
/** Create an official reference to an existing libiso_msgs object. The
references keep the object alive at least until it is released by
a matching number of destroy calls. So each reference MUST be revoked
by exactly one call to libiso_msgs_destroy().
@param pt The pointer to be set and registered
@param m A pointer to the existing object
@param flag Bitfield for control purposes (unused yet, submit 0)
@return 1 for success, 0 for failure
*/
int libiso_msgs_refer(struct libiso_msgs **pt, struct libiso_msgs *o, int flag);
/** Submit a message to a message handling facility.
@param driveno libdax drive number. Use -1 if no number is known.
@param origin program specific identification number of the originator of
a message. E.g. drive number. Programs should have an own
range of origin numbers. See above LIBISO_MSGS_ORIGIN_*_BASE
Use -1 if no number is known.
@param error_code Unique error code. Use only registered codes. See below.
The same unique error_code may be issued at different
occasions but those should be equivalent out of the view
of a libdax application. (E.g. "cannot open ATA drive"
of a libiso_msgs application. (E.g. "cannot open ATA drive"
versus "cannot open SCSI drive" would be equivalent.)
@param severity The LIBISO_MSGS_SEV_* of the event.
@param priority The LIBISO_MSGS_PRIO_* number of the event.
@ -180,12 +237,13 @@ int libiso_msgs_destroy(struct libiso_msgs **m, int flag);
@param flag Bitfield for control purposes (unused yet, submit 0)
@return 1 on success, 0 on rejection, <0 for severe errors
*/
int libiso_msgs_submit(struct libiso_msgs *m, int driveno, int error_code,
int libiso_msgs_submit(struct libiso_msgs *m, int origin, int error_code,
int severity, int priority, char *msg_text,
int os_errno, int flag);
/* Calls from applications (to be forwarded by libdax/libburn) */
/* Calls from applications (to be forwarded by direct owner) */
/** Convert a registered severity number into a severity name
@ -209,12 +267,12 @@ int libiso_msgs__text_to_sev(char *severity_name, int *severity,
LIBISO_MSGS_SEV_ALL) and for messages to be printed directly to stderr
(default LIBISO_MSGS_SEV_NEVER).
@param print_id A text of at most 80 characters to be printed before
any eventually printed message (default is "libdax: ").
any eventually printed message (default is "libiso: ").
@param flag Bitfield for control purposes (unused yet, submit 0)
@return always 1 for now
*/
int libiso_msgs_set_severities(struct libiso_msgs *m, int queue_severity,
int print_severity, const char *print_id, int flag);
int print_severity, char *print_id, int flag);
/** Obtain a message item that has at least the given severity and priority.
@ -256,7 +314,7 @@ int libiso_msgs_item_get_msg(struct libiso_msgs_item *item,
@return 1 on success, 0 on invalid item, <0 for servere errors
*/
int libiso_msgs_item_get_origin(struct libiso_msgs_item *item,
double *timestamp, pid_t *process_id, int *driveno,
double *timestamp, pid_t *process_id, int *origin,
int flag);
@ -276,7 +334,7 @@ int libiso_msgs_item_get_rank(struct libiso_msgs_item *item,
Format: error_code (LIBISO_MSGS_SEV_*,LIBISO_MSGS_PRIO_*) = explanation
If no severity or priority are fixely associates, use "(,)".
If no severity or priority are fixely associated, use "(,)".
------------------------------------------------------------------------------
Range "libiso_msgs" : 0x00000000 to 0x0000ffff
@ -284,6 +342,7 @@ Range "libiso_msgs" : 0x00000000 to 0x0000ffff
0x00000000 (ALL,ZERO) = Initial setting in new libiso_msgs_item
0x00000001 (DEBUG,ZERO) = Test error message
0x00000002 (DEBUG,ZERO) = Debugging message
0x00000003 (FATAL,HIGH) = Out of virtual memory
------------------------------------------------------------------------------
@ -304,6 +363,7 @@ Range "scdbackup" : 0x00020000 to 0x0002ffff
0x00020006 (FATAL,HIGH) = Too many scsi siblings
0x00020007 (NOTE,HIGH) = Closed O_EXCL scsi siblings
0x00020008 (SORRY,HIGH) = Device busy. Failed to fcntl-lock
0x00020009 (SORRY,HIGH) = Neither stdio-path nor its directory exist
General library operations:
@ -313,7 +373,7 @@ Range "scdbackup" : 0x00020000 to 0x0002ffff
0x00020104 (SORRY,HIGH) = NULL pointer caught
0x00020105 (SORRY,HIGH) = Drive is already released
0x00020106 (SORRY,HIGH) = Drive is busy on attempt to close
0x00020107 (SORRY,HIGH) = Drive is busy on attempt to shut down library
0x00020107 (WARNING,HIGH) = A drive is still busy on shutdown of library
0x00020108 (SORRY,HIGH) = Drive is not grabbed on disc status inquiry
0x00020108 (FATAL,HIGH) = Could not allocate new drive object
0x00020109 (FATAL,HIGH) = Library not running
@ -371,13 +431,38 @@ Range "scdbackup" : 0x00020000 to 0x0002ffff
0x0002013d (DEBUG,LOW) = Waiting for free buffer space takes long time
0x0002013e (SORRY,HIGH) = Timeout with waiting for free buffer. Now disabled
0x0002013f (DEBUG,LOW) = Reporting total time spent with waiting for buffer
0x00020140 (FATAL,HIGH) = Drive is busy on attempt to write random access
0x00020141 (SORRY,HIGH) = Write data count not properly aligned
0x00020142 (FATAL,HIGH) = Drive is not grabbed on random access write
0x00020143 (SORRY,HIGH) = Read start address not properly aligned
0x00020144 (SORRY,HIGH) = SCSI error on read
0x00020145 (FATAL,HIGH) = Drive is busy on attempt to read data
0x00020146 (FATAL,HIGH) = Drive is a virtual placeholder
0x00020147 (SORRY,HIGH) = Cannot address start byte
0x00020148 (SORRY,HIGH) = Cannot write desired amount of data
0x00020149 (SORRY,HIGH) = Unsuitable filetype for pseudo-drive
0x0002014a (SORRY,HIGH) = Cannot read desired amount of data
0x0002014b (SORRY,HIGH) = Drive is already registered resp. scanned
0x0002014c (FATAL,HIGH) = Emulated drive caught in SCSI function
0x0002014d (SORRY,HIGH) = Asynchromous SCSI error
0x0002014f (SORRY,HIGH) = Timeout with asynchromous SCSI command
0x00020150 (DEBUG,LOW) = Reporting asynchronous waiting time
0x00020151 (FATAL,HIGH) = Read attempt on write-only drive
0x00020152 (FATAL,HIGH) = Cannot start fifo thread
0x00020153 (SORRY,HIGH) = Read error on fifo input
0x00020154 (NOTE,HIGH) = Forwarded input error ends output
0x00020155 (SORRY,HIGH) = Desired fifo buffer too large
0x00020156 (SORRY,HIGH) = Desired fifo buffer too small
0x00020157 (FATAL,HIGH) = burn_source is not a fifo object
0x00020158 (DEBUG,LOW) = Reporting thread disposal precautions
0x00020159 (DEBUG,HIGH) = TOC Format 0 returns inconsistent data
libiso_audioxtr:
0x00020200 (SORRY,HIGH) = Cannot open audio source file
0x00020201 (SORRY,HIGH) = Audio source file has unsuitable format
0x00020202 (SORRY,HIGH) = Failed to prepare reading of audio data
------------------------------------------------------------------------------
Range "vreixo" : 0x00030000 to 0x0003ffff
@ -390,7 +475,7 @@ Range "vreixo" : 0x00030000 to 0x0003ffff
0x00030110 (FATAL,HIGH) = Cannot create writer thread
0x00030500 (SORRY,HIGH) = Charset conversion error
General:
0x00031001 (SORRY,HIGH) = Cannot read file (ignored)
0x00031002 (FATAL,HIGH) = Cannot read file (operation canceled)
@ -422,8 +507,21 @@ Range "vreixo" : 0x00030000 to 0x0003ffff
Joliet:
0x00030301 (NOTE,MEDIUM) = Unsupported file type for Joliet tree
------------------------------------------------------------------------------
Range "application" : 0x00040000 to 0x0004ffff
0x00040000 (ABORT,HIGH) : Application supplied message
0x00040001 (FATAL,HIGH) : Application supplied message
0x00040002 (SORRY,HIGH) : Application supplied message
0x00040003 (WARNING,HIGH) : Application supplied message
0x00040004 (HINT,HIGH) : Application supplied message
0x00040005 (NOTE,HIGH) : Application supplied message
0x00040006 (UPDATE,HIGH) : Application supplied message
0x00040007 (DEBUG,HIGH) : Application supplied message
------------------------------------------------------------------------------
#endif /* LIDBAX_MSGS_________________ */

2
src/libisofs.h
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@ -384,7 +384,7 @@ struct iso_read_image_features
unsigned int hasJoliet :1;
/**
* It will be set to 1 if the image is an ISO 9660:1999, i.e. it ha
* It will be set to 1 if the image is an ISO 9660:1999, i.e. it has
* a version 2 Enhanced Volume Descriptor.
*/
unsigned int hasIso1999 :1;

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