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libisofs/src/libiso_msgs.h

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/* libiso_msgs
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Message handling facility of libiso.
Copyright (C) 2006-2008 Thomas Schmitt <scdbackup@gmx.net>,
provided under GPL version 2
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*/
/*
*Never* set this macro outside libiso_msgs.c !
The entrails of the message handling facility are not to be seen by
the other library components or the applications.
*/
#ifdef LIBISO_MSGS_H_INTERNAL
#ifndef LIBISO_MSGS_SINGLE_THREADED
#include <pthread.h>
#endif
struct libiso_msgs_item {
double timestamp;
pid_t process_id;
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int origin;
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int severity;
int priority;
/* Apply for your developer's error code range at
libburn-hackers@pykix.org
Report introduced codes in the list below. */
int error_code;
char *msg_text;
int os_errno;
struct libiso_msgs_item *prev,*next;
};
struct libiso_msgs {
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int refcount;
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struct libiso_msgs_item *oldest;
struct libiso_msgs_item *youngest;
int count;
int queue_severity;
int print_severity;
char print_id[81];
#ifndef LIBISO_MSGS_SINGLE_THREADED
pthread_mutex_t lock_mutex;
#endif
};
#endif /* LIBISO_MSGS_H_INTERNAL */
#ifndef LIBISO_MSGS_H_INCLUDED
#define LIBISO_MSGS_H_INCLUDED 1
#ifndef LIBISO_MSGS_H_INTERNAL
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/* 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.
*/
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/* Public Opaque Handles */
/** A pointer to this is a opaque handle to a message handling facility */
struct libiso_msgs;
/** A pointer to this is a opaque handle to a single message item */
struct libiso_msgs_item;
#endif /* ! LIBISO_MSGS_H_INTERNAL */
/* Public Macros */
/* Registered Severities */
/* It is well advisable to let applications select severities via strings and
forwarded functions libiso_msgs__text_to_sev(), libiso_msgs__sev_to_text().
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These macros are for use by the owner of libiso_msgs.
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*/
/** Use this to get messages of any severity. Do not use for submitting.
*/
#define LIBISO_MSGS_SEV_ALL 0x00000000
/** Debugging messages not to be visible to normal users by default
*/
#define LIBISO_MSGS_SEV_DEBUG 0x10000000
/** Update of a progress report about long running actions
*/
#define LIBISO_MSGS_SEV_UPDATE 0x20000000
/** Not so usual events which were gracefully handled
*/
#define LIBISO_MSGS_SEV_NOTE 0x30000000
/** Possibilities to achieve a better result
*/
#define LIBISO_MSGS_SEV_HINT 0x40000000
/** Warnings about problems which could not be handled optimally
*/
#define LIBISO_MSGS_SEV_WARNING 0x50000000
/** Non-fatal error messages indicating that parts of the action failed
but processing will/should go on
*/
#define LIBISO_MSGS_SEV_SORRY 0x60000000
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/** error messages indicating that the operation has failed, but you can
still continue using the library and even retry the operation
*/
#define LIBISO_MSGS_SEV_ERROR 0x6A000000
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/** An error message which puts the whole operation of the program in question
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*/
#define LIBISO_MSGS_SEV_FATAL 0x70000000
/** A message from an abort handler which will finally finish libburn
*/
#define LIBISO_MSGS_SEV_ABORT 0x71000000
/** A severity to exclude resp. discard any possible message.
Do not use this severity for submitting.
*/
#define LIBISO_MSGS_SEV_NEVER 0x7fffffff
/* Registered Priorities */
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/* Priorities are to be selected by the programmers and not by the user. */
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#define LIBISO_MSGS_PRIO_ZERO 0x00000000
#define LIBISO_MSGS_PRIO_LOW 0x10000000
#define LIBISO_MSGS_PRIO_MEDIUM 0x20000000
#define LIBISO_MSGS_PRIO_HIGH 0x30000000
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#define LIBISO_MSGS_PRIO_TOP 0x70000000
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/* Do not use this priority for submitting */
#define LIBISO_MSGS_PRIO_NEVER 0x7fffffff
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/* 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
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/* Public Functions */
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/* Calls initiated from inside the direct owner (e.g. from libburn) */
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/** Create new empty message handling facility with queue and issue a first
official reference to it.
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@param flag Bitfield for control purposes (unused yet, submit 0)
@return >0 success, <=0 failure
*/
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.
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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.
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@param flag Bitfield for control purposes (unused yet, submit 0)
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@return 1 for success, 0 for pointer to NULL, -1 for fatal error
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*/
int libiso_msgs_destroy(struct libiso_msgs **m, int flag);
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/** 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);
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/** Submit a message to a message handling facility.
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@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.
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@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
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of a libiso_msgs application. (E.g. "cannot open ATA drive"
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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.
@param msg_text Printable and human readable message text.
@param os_errno Eventual error code from operating system (0 if none)
@param flag Bitfield for control purposes (unused yet, submit 0)
@return 1 on success, 0 on rejection, <0 for severe errors
*/
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int libiso_msgs_submit(struct libiso_msgs *m, int origin, int error_code,
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int severity, int priority, char *msg_text,
int os_errno, int flag);
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/* Calls from applications (to be forwarded by direct owner) */
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/** Convert a registered severity number into a severity name
@param flag Bitfield for control purposes:
bit0= list all severity names in a newline separated string
@return >0 success, <=0 failure
*/
int libiso_msgs__sev_to_text(int severity, char **severity_name,
int flag);
/** Convert a severity name into a severity number,
@param flag Bitfield for control purposes (unused yet, submit 0)
@return >0 success, <=0 failure
*/
int libiso_msgs__text_to_sev(char *severity_name, int *severity,
int flag);
/** Set minimum severity for messages to be queued (default
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
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any eventually printed message (default is "libiso: ").
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@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,
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int print_severity, char *print_id, int flag);
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/** Obtain a message item that has at least the given severity and priority.
Usually all older messages of lower severity are discarded then. If no
item of sufficient severity was found, all others are discarded from the
queue.
@param flag Bitfield for control purposes (unused yet, submit 0)
@return 1 if a matching item was found, 0 if not, <0 for severe errors
*/
int libiso_msgs_obtain(struct libiso_msgs *m, struct libiso_msgs_item **item,
int severity, int priority, int flag);
/** Destroy a message item obtained by libiso_msgs_obtain(). The submitted
pointer gets set to NULL.
Caution: Copy eventually obtained msg_text before destroying the item,
if you want to use it further.
@param flag Bitfield for control purposes (unused yet, submit 0)
@return 1 for success, 0 for pointer to NULL, <0 for severe errors
*/
int libiso_msgs_destroy_item(struct libiso_msgs *m,
struct libiso_msgs_item **item, int flag);
/** Obtain from a message item the three application oriented components as
submitted with the originating call of libiso_msgs_submit().
Caution: msg_text becomes a pointer into item, not a copy.
@param flag Bitfield for control purposes (unused yet, submit 0)
@return 1 on success, 0 on invalid item, <0 for servere errors
*/
int libiso_msgs_item_get_msg(struct libiso_msgs_item *item,
int *error_code, char **msg_text, int *os_errno,
int flag);
/** Obtain from a message item the submitter identification submitted
with the originating call of libiso_msgs_submit().
@param flag Bitfield for control purposes (unused yet, submit 0)
@return 1 on success, 0 on invalid item, <0 for servere errors
*/
int libiso_msgs_item_get_origin(struct libiso_msgs_item *item,
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double *timestamp, pid_t *process_id, int *origin,
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int flag);
/** Obtain from a message item severity and priority as submitted
with the originating call of libiso_msgs_submit().
@param flag Bitfield for control purposes (unused yet, submit 0)
@return 1 on success, 0 on invalid item, <0 for servere errors
*/
int libiso_msgs_item_get_rank(struct libiso_msgs_item *item,
int *severity, int *priority, int flag);
#ifdef LIDBAX_MSGS_________________
/* Registered Error Codes */
Format: error_code (LIBISO_MSGS_SEV_*,LIBISO_MSGS_PRIO_*) = explanation
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If no severity or priority are fixely associated, use "(,)".
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------------------------------------------------------------------------------
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
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0x00000003 (FATAL,HIGH) = Out of virtual memory
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------------------------------------------------------------------------------
Range "elmom" : 0x00010000 to 0x0001ffff
------------------------------------------------------------------------------
Range "scdbackup" : 0x00020000 to 0x0002ffff
Acessing and defending drives:
0x00020001 (SORRY,LOW) = Cannot open busy device
0x00020002 (SORRY,HIGH) = Encountered error when closing drive
0x00020003 (SORRY,HIGH) = Could not grab drive
0x00020004 (NOTE,HIGH) = Opened O_EXCL scsi sibling
0x00020005 (SORRY,HIGH) = Failed to open device
0x00020006 (FATAL,HIGH) = Too many scsi siblings
0x00020007 (NOTE,HIGH) = Closed O_EXCL scsi siblings
0x00020008 (SORRY,HIGH) = Device busy. Failed to fcntl-lock
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0x00020009 (SORRY,HIGH) = Neither stdio-path nor its directory exist
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General library operations:
0x00020101 (WARNING,HIGH) = Cannot find given worker item
0x00020102 (SORRY,HIGH) = A drive operation is still going on
0x00020103 (WARNING,HIGH) = After scan a drive operation is still going on
0x00020104 (SORRY,HIGH) = NULL pointer caught
0x00020105 (SORRY,HIGH) = Drive is already released
0x00020106 (SORRY,HIGH) = Drive is busy on attempt to close
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0x00020107 (WARNING,HIGH) = A drive is still busy on shutdown of library
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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
0x0002010a (FATAL,HIGH) = Unsuitable track mode
0x0002010b (FATAL,HIGH) = Burn run failed
0x0002010c (FATAL,HIGH) = Failed to transfer command to drive
0x0002010d (DEBUG,HIGH) = Could not inquire TOC
0x0002010e (FATAL,HIGH) = Attempt to read ATIP from ungrabbed drive
0x0002010f (DEBUG,HIGH) = SCSI error condition on command
0x00020110 (FATAL,HIGH) = Persistent drive address too long
0x00020111 (FATAL,HIGH) = Could not allocate new auxiliary object
0x00020112 (SORRY,HIGH) = Bad combination of write_type and block_type
0x00020113 (FATAL,HIGH) = Drive capabilities not inquired yet
0x00020114 (SORRY,HIGH) = Attempt to set ISRC with bad data
0x00020115 (SORRY,HIGH) = Attempt to set track mode to unusable value
0x00020116 (FATAL,HIGH) = Track mode has unusable value
0x00020117 (FATAL,HIGH) = toc_entry of drive is already in use
0x00020118 (DEBUG,HIGH) = Closing track
0x00020119 (DEBUG,HIGH) = Closing session
0x0002011a (NOTE,HIGH) = Padding up track to minimum size
0x0002011b (FATAL,HIGH) = Attempt to read track info from ungrabbed drive
0x0002011c (FATAL,HIGH) = Attempt to read track info from busy drive
0x0002011d (FATAL,HIGH) = SCSI error on write
0x0002011e (SORRY,HIGH) = Unsuitable media detected
0x0002011f (SORRY,HIGH) = Burning is restricted to a single track
0x00020120 (NOTE,HIGH) = FORMAT UNIT ignored
0x00020121 (FATAL,HIGH) = Write preparation setup failed
0x00020122 (FATAL,HIGH) = SCSI error on format_unit
0x00020123 (SORRY,HIGH) = DVD Media are unsuitable for desired track type
0x00020124 (SORRY,HIGH) = SCSI error on set_streaming
0x00020125 (SORRY,HIGH) = Write start address not supported
0x00020126 (SORRY,HIGH) = Write start address not properly aligned
0x00020127 (NOTE,HIGH) = Write start address is ...
0x00020128 (FATAL,HIGH) = Unsupported inquiry_type with mmc_get_performance
0x00020129 (SORRY,HIGH) = Will not format media type
0x0002012a (FATAL,HIGH) = Cannot inquire write mode capabilities
0x0002012b (FATAL,HIGH) = Drive offers no suitable write mode with this job
0x0002012c (SORRY,HIGH) = Too many logical tracks recorded
0x0002012d (FATAL,HIGH) = Exceeding range of permissible write addresses
0x0002012e (NOTE,HIGH) = Activated track default size
0x0002012f (SORRY,HIGH) = SAO is restricted to single fixed size session
0x00020130 (SORRY,HIGH) = Drive and media state unsuitable for blanking
0x00020131 (SORRY,HIGH) = No suitable formatting type offered by drive
0x00020132 (SORRY,HIGH) = Selected format is not suitable for libburn
0x00020133 (SORRY,HIGH) = Cannot mix data and audio in SAO mode
0x00020134 (NOTE,HIGH) = Defaulted TAO to DAO
0x00020135 (SORRY,HIGH) = Cannot perform TAO, job unsuitable for DAO
0x00020136 (SORRY,HIGH) = DAO burning restricted to single fixed size track
0x00020137 (HINT,HIGH) = TAO would be possible
0x00020138 (FATAL,HIGH) = Cannot reserve track
0x00020139 (SORRY,HIGH) = Write job parameters are unsuitable
0x0002013a (FATAL,HIGH) = No suitable media detected
0x0002013b (DEBUG,HIGH) = SCSI command indicates host or driver error
0x0002013c (SORRY,HIGH) = Malformed capabilities page 2Ah received
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
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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
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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
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------------------------------------------------------------------------------
Range "vreixo" : 0x00030000 to 0x0003ffff
Handling of iso directory depth restrictions on tree creation time. Note that this doesn't involve the RR reparent. It just ignore the files that break iso restrictions (see ECMA-119, 6.8.2.1).
2007-12-15 17:29:40 +00:00
Image creation:
0x00030100 (NOTE,MEDIUM) = File cannot be added to image (ignored)
Implement Writer for file contents. Some aspects, such as better reporting of file bigger or smaller than expected is needed, but all situations are handled propertly.
2007-12-20 21:17:18 +00:00
0x00030101 (NOTE,MEDIUM) = File cannot be writing to image (ignored)
Add write function. Fix bug in PVD writing and dir. record len computation.
2007-12-22 13:45:00 +00:00
0x00030102 (FATAL,HIGH) = Write error
Implement ECMA-119 burn_source and writer thread handling. At this time, nglibisofs is able to output an image!! Note that communication between writer and read thread is done via a pipe. That will be replaced by a ring buffer in the near future.
2007-12-22 16:09:28 +00:00
0x00030103 (FATAL,HIGH) = Read error
0x00030110 (FATAL,HIGH) = Cannot create writer thread
Handling of iso directory depth restrictions on tree creation time. Note that this doesn't involve the RR reparent. It just ignore the files that break iso restrictions (see ECMA-119, 6.8.2.1).
2007-12-15 17:29:40 +00:00
Support for setting an output charset for RR NM entries. It will default to input charset (i.e. the locale charset for now). Names will be stored internally in that locale charset. Note that input charset musn't be changed by user. Instead, we can provide an input charset property to IsoFilesystem implementations.
2007-12-27 23:20:02 +00:00
0x00030500 (SORRY,HIGH) = Charset conversion error
Update libiso_msgs with new Thomas changes.
2008-01-19 00:04:19 +00:00
Add message queue facilities. Each IsoImage will have its own msg queue.
2007-12-02 19:11:44 +00:00
General:
0x00031001 (SORRY,HIGH) = Cannot read file (ignored)
0x00031002 (FATAL,HIGH) = Cannot read file (operation canceled)
0x00031003 (FATAL,HIGH) = File doesnt exist
0x00031004 (FATAL,HIGH) = Read access denied
Image reading:
0x00031000 (FATAL,HIGH) = Unsupported ISO-9660 image
0x00031001 (HINT,MEDIUM) = Unsupported Vol Desc that will be ignored
0x00031002 (FATAL,HIGH) = Damaged ISO-9660 image
0x00031003 (SORRY,HIGH) = Cannot read previous image file
Rock-Ridge:
0x00030101 (HINT,MEDIUM) = Unsupported SUSP entry that will be ignored
0x00030102 (SORRY,HIGH) = Wrong/damaged SUSP entry
0x00030103 (WARNING,MEDIUM)= Multiple SUSP ER entries where found
0x00030111 (SORRY,HIGH) = Unsupported RR feature
0x00030112 (SORRY,HIGH) = Error in a Rock Ridge entry
Add function to create an IsoFileSource from an ISO image.
2007-12-31 20:51:35 +00:00
0x00030113 (WARNING,MEDIUM)= Wrong/Damaged Rock Ridge
Add message queue facilities. Each IsoImage will have its own msg queue.
2007-12-02 19:11:44 +00:00
El-Torito:
0x00030201 (HINT,MEDIUM) = Unsupported Boot Vol Desc that will be ignored
0x00030202 (SORRY,HIGH) = Wrong El-Torito catalog
0x00030203 (HINT,MEDIUM) = Unsupported El-Torito feature
0x00030204 (SORRY,HIGH) = Invalid file to be an El-Torito image
0x00030205 (WARNING,MEDIUM)= Cannot properly patch isolinux image
0x00030206 (WARNING,MEDIUM)= Copying El-Torito from a previous image without
enought info about it
Joliet:
0x00030301 (NOTE,MEDIUM) = Unsupported file type for Joliet tree
Update libiso_msgs with new Thomas changes.
2008-01-19 00:04:19 +00:00
------------------------------------------------------------------------------
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
Add message queue facilities. Each IsoImage will have its own msg queue.
2007-12-02 19:11:44 +00:00
------------------------------------------------------------------------------
#endif /* LIDBAX_MSGS_________________ */
#ifdef LIBISO_MSGS_H_INTERNAL
/* Internal Functions */
/** Lock before doing side effect operations on m */
static int libiso_msgs_lock(struct libiso_msgs *m, int flag);
/** Unlock after effect operations on m are done */
static int libiso_msgs_unlock(struct libiso_msgs *m, int flag);
/** Create new empty message item.
@param link Previous item in queue
@param flag Bitfield for control purposes (unused yet, submit 0)
@return >0 success, <=0 failure
*/
static int libiso_msgs_item_new(struct libiso_msgs_item **item,
struct libiso_msgs_item *link, int flag);
/** Destroy a message item obtained by libiso_msgs_obtain(). The submitted
pointer gets set to NULL.
@param flag Bitfield for control purposes (unused yet, submit 0)
@return 1 for success, 0 for pointer to NULL
*/
static int libiso_msgs_item_destroy(struct libiso_msgs_item **item, int flag);
#endif /* LIBISO_MSGS_H_INTERNAL */
#endif /* ! LIBISO_MSGS_H_INCLUDED */
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