claunia/libcdio-osx
Archived
1
0
Fork 0
Code Issues 2 Pull Requests Actions Packages Projects Releases Wiki Activity

Two patches from Peter J. Creath

Browse Source 
Fix bug in handling arithmetic with unsigned numbers
  Return success if reading 0 audio blocks.
This commit is contained in:
rocky
2005-10-07 00:06:45 +00:00
parent 8fc87950ba
commit 14811c97db
1 changed files with 13 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
lib/driver/read.c
View File

@@ -1,5 +1,5 @@
/*
$Id: read.c,v 1.7 2005/03/18 12:56:00 rocky Exp $
$Id: read.c,v 1.8 2005/10/07 00:06:45 rocky Exp $
Copyright (C) 2005 Rocky Bernstein <rocky@panix.com>
@@ -60,14 +60,16 @@
cdio_get_track_lsn(p_cdio, CDIO_CDROM_LEADOUT_TRACK); \
if ( i_lsn > end_lsn ) { \
cdio_info("Trying to access past end of disk lsn: %ld, end lsn: %ld", \
(long int) i_lsn, (long int) end_lsn); \
return DRIVER_OP_ERROR; \
} \
if ( i_lsn + i_blocks -1 > end_lsn ) { \
(long int) i_lsn, (long int) end_lsn); \
return DRIVER_OP_ERROR; \
} \
/* Care is used in the expression below to be correct with */ \
/* respect to unsigned integers. */ \
if ( i_lsn + i_blocks > end_lsn + 1 ) { \
cdio_info("Request truncated to end disk; lsn: %ld, end lsn: %ld", \
(long int) i_lsn, (long int) end_lsn); \
i_blocks = end_lsn - i_lsn + 1; \
} \
(long int) i_lsn, (long int) end_lsn); \
i_blocks = end_lsn - i_lsn + 1; \
} \
}
/*!
@@ -122,6 +124,9 @@ cdio_read_audio_sectors (const CdIo_t *p_cdio, void *p_buf, lsn_t i_lsn,
uint32_t i_blocks)
{
check_lsn_blocks(i_lsn, i_blocks);
if (i_blocks == 0) return DRIVER_OP_SUCCESS;
if (p_cdio->op.read_audio_sectors)
return (p_cdio->op.read_audio_sectors) (p_cdio->env, p_buf, i_lsn,
i_blocks);