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Moved storage location of suffix from xorriso into IsoExternalFilterCommand

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This commit is contained in:
Thomas Schmitt 2009-04-02 18:07:27 +02:00
parent 0a265d9d4f
commit 437713cd8e
2 changed files with 59 additions and 74 deletions
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73
libisofs/filters/external.c
View File

@ -46,11 +46,6 @@ typedef struct
int out_eof;
uint8_t pipebuf[2048]; /* buffers in case of EAGAIN on write() */
int pipebuf_fill;
#ifdef Libisofs_extf_old_behavior_bit_0
int is_0_run;
#endif
} ExternalFilterRuntime;
@ -72,11 +67,6 @@ int extf_running_new(ExternalFilterRuntime **running, int send_fd, int recv_fd,
o->out_eof = 0;
memset(o->pipebuf, 0, sizeof(o->pipebuf));
o->pipebuf_fill = 0;
#ifdef Libisofs_extf_old_behavior_bit_0
o->is_0_run = 0;
#endif
return 1;
}
@ -128,26 +118,10 @@ int extf_stream_open_flag(IsoStream *stream, int flag)
return ISO_NULL_POINTER;
}
data = (ExternalFilterStreamData*)stream->data;
if (data->running != NULL) {
return ISO_FILE_ALREADY_OPENED;
}
#ifdef Libisofs_extf_old_behavior_bit_0
if (data->cmd->behavior & 1) {
if (iso_stream_get_size(data->orig) == 0) {
/* Do not fork. Place message for .read and .close */;
ret = extf_running_new(&running, -1, -1, 0, 0);
if (ret < 0) {
return ret;
}
running->is_0_run = 1;
data->running = running;
return 1;
}
}
#endif /* Libisofs_extf_old_behavior_bit_0 */
if (data->size < 0 && !(flag & 1)) {
/* Do the size determination run now, so that the size gets cached
and .get_size() will not fail on an opened stream.
@ -260,11 +234,6 @@ static
int extf_stream_close(IsoStream *stream)
{
int ret, status;
#ifdef Libisofs_extf_old_behavior_bit_0
int is_0_run;
#endif
ExternalFilterStreamData *data;
if (stream == NULL) {
@ -276,11 +245,6 @@ int extf_stream_close(IsoStream *stream)
return 1;
}
#ifdef Libisofs_extf_old_behavior_bit_0
is_0_run = data->running->is_0_run;
if (!is_0_run) {
#endif
if(data->running->recv_fd != -1)
close(data->running->recv_fd);
if(data->running->send_fd != -1)
@ -291,19 +255,8 @@ int extf_stream_close(IsoStream *stream)
kill(data->running->pid, SIGKILL);
waitpid(data->running->pid, &status, 0);
}
#ifdef Libisofs_extf_old_behavior_bit_0
}
#endif
free(data->running);
data->running = NULL;
#ifdef Libisofs_extf_old_behavior_bit_0
if (is_0_run)
return 1;
#endif
return iso_stream_close(data->orig);
}
@ -324,13 +277,7 @@ int extf_stream_read(IsoStream *stream, void *buf, size_t desired)
if (running == NULL) {
return ISO_FILE_NOT_OPENED;
}
#ifdef Libisofs_extf_old_behavior_bit_0
if (running->out_eof || running->is_0_run) {
#else
if (running->out_eof) {
#endif
return 0;
}
@ -506,6 +453,7 @@ int extf_update_size(IsoStream *stream)
}
static
IsoStream *extf_get_input_stream(IsoStream *stream, int flag)
{
ExternalFilterStreamData *data;
@ -632,11 +580,7 @@ int iso_file_add_external_filter(IsoFile *file, IsoExternalFilterCommand *cmd,
IsoStream *stream;
off_t original_size = 0, filtered_size = 0;
#ifdef Libisofs_extf_old_behavior_bit_0
if (cmd->behavior & (2 | 4)) {
#else
if (cmd->behavior & (1 | 2 | 4)) {
#endif
original_size = iso_file_get_size(file);
if (original_size <= 0 ||
((cmd->behavior & 4) && original_size <= 2048)) {
@ -669,3 +613,18 @@ int iso_file_add_external_filter(IsoFile *file, IsoExternalFilterCommand *cmd,
return ISO_SUCCESS;
}
int iso_file_get_external_filter(IsoFile *file, IsoExternalFilterCommand **cmd,
int flag)
{
IsoStream *stream;
ExternalFilterStreamData *data;
stream = iso_file_get_stream(file);
if (stream->class != &extf_stream_class)
return 0;
data = stream->data;
*cmd = data->cmd;
return 1;
}

44
libisofs/libisofs.h
View File

@ -4695,6 +4695,11 @@ struct iso_external_filter_command
*/
int refcount;
/* An optional instance id.
* Set to empty text if no individual name for this object is intended.
*/
char *name;
/* Absolute local filesystem path to the executable program. */
char *path;
@ -4709,25 +4714,25 @@ struct iso_external_filter_command
char **argv;
/* A bit field which controls behavior variations:
#ifdef Libisofs_extf_old_behavior_bit_0
* bit0= Shortcut: 0 sized input will surely yield 0 sized output
#else
* bit0= Do not install filter if the input has size 0.
#endif
* bit1= Do not install filter if the output is not smaller than the input.
* bit2= Do not install filter if the number of output blocks is
* not smaller than the number of input blocks. Block size is 2048.
* Assume that non-empty input yields non-empty output and thus do
* not attempt to attach a filter to files smaller than 2049 bytes.
* bit3= suffix was removed rather than to be added.
* (Removal and adding suffixes is the task of the application.
* This behavior bit serves only as reminder for the application.)
*/
int behavior;
/* An optional instance id.
* Set to NULL if no individual name for this object is intended.
/* The eventual suffix which is supposed to be added to the IsoFile name
* resp. to be removed from the name.
* (This is to be done by the application, not by calls
* iso_file_add_external_filter() or iso_file_remove_filter().
* The value recorded here serves only as reminder for the application.)
*/
char *name;
char *suffix;
};
typedef struct iso_external_filter_command IsoExternalFilterCommand;
@ -4781,6 +4786,27 @@ int iso_file_add_external_filter(IsoFile *file, IsoExternalFilterCommand *cmd,
int iso_file_remove_filter(IsoFile *file, int flag);
/* ts A90402 */
/**
* Obtain the IsoExternalFilterCommand which is associated with the top filter
* stream from a data file.
* @param file
* The data file node which shall show filtered content.
* @param cmd
* Will return the external IsoExternalFilterCommand. This does not
* increment .refcount.
* @param flag
* Bitfield for control purposes, unused yet, submit 0.
* @return
* 1 on success, 0 if the top stream of the file is not an external filter
* <0 on error
*
* @since 0.6.18
*/
int iso_file_get_external_filter(IsoFile *file, IsoExternalFilterCommand **cmd,
int flag);
/* ------------------------------------------------------------------------- */
#ifdef LIBISOFS_WITHOUT_LIBBURN