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Throw error if imported_iso interval would be overwritten by multi-session

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This commit is contained in:
Thomas Schmitt
2017-08-26 11:47:14 +02:00
parent cace41ec16
commit 028f9275d3
4 changed files with 17 additions and 5 deletions
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14
libisofs/ecma119.c
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@ -2013,12 +2013,11 @@ int iso_interval_reader_keep(Ecma119Image *target,
if (!target->opts->appendable)
return 0;
/* --- From here on return either 1 or <0 --- */
/* multi-session write offset must be larger than interval end */
if (target->opts->ms_block <= ivr->end_byte / BLOCK_SIZE)
/* >>> ??? return error ??? */
return 0;
return ISO_MULTI_OVER_IMPORTED;
return 1;
}
@ -2036,6 +2035,8 @@ int iso_interval_reader_start_size(Ecma119Image *t, char *path,
return ret;
*start_byte = ivr->start_byte;
keep = iso_interval_reader_keep(t, ivr, 0);
if (keep < 0)
return(keep);
iso_interval_reader_destroy(&ivr, 0);
return ISO_SUCCESS + (keep > 0);
}
@ -2066,7 +2067,10 @@ int iso_write_partition_file(Ecma119Image *target, char *path,
&ivr, &byte_count, 0);
if (ret < 0)
goto ex;
if (iso_interval_reader_keep(target, ivr, 0)) {
ret = iso_interval_reader_keep(target, ivr, 0);
if (ret < 0)
goto ex;
if (ret > 0) {
/* From imported_iso and for add-on session. Leave it in place. */
ret = ISO_SUCCESS;
goto ex;