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Replaced some large local variables by other means in libburn/read.c

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This commit is contained in:
Thomas Schmitt 2011-05-23 15:51:49 +00:00
parent c88214e221
commit d6cb95e554
2 changed files with 18 additions and 17 deletions
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2
libburn/trunk/cdrskin/cdrskin_timestamp.h
View File

@ -1 +1 @@
#define Cdrskin_timestamP "2011.05.23.154011" #define Cdrskin_timestamP "2011.05.23.155217"

33
libburn/trunk/libburn/read.c
View File

@ -1,7 +1,7 @@
/* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */ /* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */
/* Copyright (c) 2004 - 2006 Derek Foreman, Ben Jansens /* Copyright (c) 2004 - 2006 Derek Foreman, Ben Jansens
Copyright (c) 2006 - 2010 Thomas Schmitt <scdbackup@gmx.net> Copyright (c) 2006 - 2011 Thomas Schmitt <scdbackup@gmx.net>
Provided under GPL version 2 or later. Provided under GPL version 2 or later.
*/ */
@ -54,7 +54,7 @@ void burn_disc_read(struct burn_drive *d, const struct burn_read_opts *o)
int drive_lba; int drive_lba;
unsigned short crc; unsigned short crc;
unsigned char fakesub[96]; unsigned char fakesub[96];
struct buffer page; struct buffer page; <- needs to become dynamic memory
int speed; int speed;
/* ts A61007 : if this function gets revived, then these /* ts A61007 : if this function gets revived, then these
@ -286,8 +286,12 @@ void burn_packet_process(struct burn_drive *d, unsigned char *data,
/* so yeah, when you uncomment these, make them write zeros insted of crap /* so yeah, when you uncomment these, make them write zeros insted of crap
static void write_empty_sector(int fd) static void write_empty_sector(int fd)
{ {
char sec[2352]; static char sec[2352], initialized = 0;
if (!initialized) {
memset(sec, 0, 2352);
initialized = 1;
}
burn_print(1, "writing an 'empty' sector\n"); burn_print(1, "writing an 'empty' sector\n");
write(fd, sec, 2352); write(fd, sec, 2352);
} }
@ -339,7 +343,7 @@ int burn_read_data(struct burn_drive *d, off_t byte_address,
int alignment = 2048, start, upto, chunksize = 1, err, cpy_size, i; int alignment = 2048, start, upto, chunksize = 1, err, cpy_size, i;
int sose_mem = 0, fd = -1, ret; int sose_mem = 0, fd = -1, ret;
char msg[81], *wpt; char msg[81], *wpt;
struct buffer buf, *buffer_mem = d->buffer; struct buffer *buf = NULL, *buffer_mem = d->buffer;
/* /*
#define Libburn_read_data_adr_logginG 1 #define Libburn_read_data_adr_logginG 1
@ -353,7 +357,7 @@ int burn_read_data(struct burn_drive *d, off_t byte_address,
fprintf(log_fp, "%d\n", (int) (byte_address / 2048)); fprintf(log_fp, "%d\n", (int) (byte_address / 2048));
#endif /* Libburn_read_data_logginG */ #endif /* Libburn_read_data_logginG */
BURN_ALLOC_MEM(buf, struct buffer, 1);
*data_count = 0; *data_count = 0;
sose_mem = d->silent_on_scsi_error; sose_mem = d->silent_on_scsi_error;
@ -362,20 +366,20 @@ int burn_read_data(struct burn_drive *d, off_t byte_address,
d->global_index, 0x00020142, d->global_index, 0x00020142,
LIBDAX_MSGS_SEV_FATAL, LIBDAX_MSGS_PRIO_HIGH, LIBDAX_MSGS_SEV_FATAL, LIBDAX_MSGS_PRIO_HIGH,
"Drive is not grabbed on random access read", 0, 0); "Drive is not grabbed on random access read", 0, 0);
return 0; {ret = 0; goto ex;}
} }
if (d->drive_role == 0) { if (d->drive_role == 0) {
libdax_msgs_submit(libdax_messenger, d->global_index, libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020146, 0x00020146,
LIBDAX_MSGS_SEV_FATAL, LIBDAX_MSGS_PRIO_HIGH, LIBDAX_MSGS_SEV_FATAL, LIBDAX_MSGS_PRIO_HIGH,
"Drive is a virtual placeholder (null-drive)", 0, 0); "Drive is a virtual placeholder (null-drive)", 0, 0);
return 0; {ret = 0; goto ex;}
} else if (d->drive_role == 3) { } else if (d->drive_role == 3) {
libdax_msgs_submit(libdax_messenger, d->global_index, libdax_msgs_submit(libdax_messenger, d->global_index,
0x00020151, 0x00020151,
LIBDAX_MSGS_SEV_FAILURE, LIBDAX_MSGS_PRIO_HIGH, LIBDAX_MSGS_SEV_FAILURE, LIBDAX_MSGS_PRIO_HIGH,
"Read attempt on write-only drive", 0, 0); "Read attempt on write-only drive", 0, 0);
return 0; {ret = 0; goto ex;}
} }
if ((byte_address % alignment) != 0) { if ((byte_address % alignment) != 0) {
sprintf(msg, sprintf(msg,
@ -385,7 +389,7 @@ int burn_read_data(struct burn_drive *d, off_t byte_address,
0x00020143, 0x00020143,
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH, LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
msg, 0, 0); msg, 0, 0);
return 0; {ret = 0; goto ex;}
} }
if (d->media_read_capacity != 0x7fffffff && byte_address >= if (d->media_read_capacity != 0x7fffffff && byte_address >=
((off_t) d->media_read_capacity + (off_t) 1) * (off_t) 2048) { ((off_t) d->media_read_capacity + (off_t) 1) * (off_t) 2048) {
@ -399,7 +403,7 @@ int burn_read_data(struct burn_drive *d, off_t byte_address,
LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH, LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
msg, 0, 0); msg, 0, 0);
} }
return 0; {ret = 0; goto ex;}
} }
if (d->busy != BURN_DRIVE_IDLE) { if (d->busy != BURN_DRIVE_IDLE) {
@ -407,7 +411,7 @@ int burn_read_data(struct burn_drive *d, off_t byte_address,
d->global_index, 0x00020145, d->global_index, 0x00020145,
LIBDAX_MSGS_SEV_FATAL, LIBDAX_MSGS_PRIO_HIGH, LIBDAX_MSGS_SEV_FATAL, LIBDAX_MSGS_PRIO_HIGH,
"Drive is busy on attempt to read data", 0, 0); "Drive is busy on attempt to read data", 0, 0);
return 0; {ret = 0; goto ex;}
} }
if (d->drive_role != 1) { if (d->drive_role != 1) {
@ -457,7 +461,7 @@ int burn_read_data(struct burn_drive *d, off_t byte_address,
} }
d->busy = BURN_DRIVE_READING_SYNC; d->busy = BURN_DRIVE_READING_SYNC;
d->buffer = &buf; d->buffer = buf;
start = byte_address / 2048; start = byte_address / 2048;
upto = start + data_size / 2048; upto = start + data_size / 2048;
@ -524,10 +528,7 @@ int burn_read_data(struct burn_drive *d, off_t byte_address,
ret = 1; ret = 1;
ex:; ex:;
/* <<< let it open until drive is given up or writing shall happen BURN_FREE_MEM(buf);
if (fd != -1)
close(fd);
*/
d->buffer = buffer_mem; d->buffer = buffer_mem;
d->busy = BURN_DRIVE_IDLE; d->busy = BURN_DRIVE_IDLE;
return ret; return ret;