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cache: add sanity-check for sector size 

Add sanity-check for sector size to avoid strange crashes if it is
too large.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31914 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2010-08-03 16:01:40 +00:00 committed by Uoti Urpala
parent 2e6ff523dd
commit 837b6d245d
2 changed files with 9 additions and 2 deletions
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8
stream/cache2.c
View File

@ -497,13 +497,19 @@ static void *ThreadProc( void *s ){
int cache_stream_fill_buffer(stream_t *s){
int len;
int sector_size;
if(!s->cache_pid) return stream_fill_buffer(s);
// cache_stats(s->cache_data);
if(s->pos!=((cache_vars_t*)s->cache_data)->read_filepos) mp_msg(MSGT_CACHE,MSGL_ERR,"!!! read_filepos differs!!! report this bug...\n");
sector_size = ((cache_vars_t*)s->cache_data)->sector_size;
if (sector_size > STREAM_MAX_SECTOR_SIZE) {
mp_msg(MSGT_CACHE, MSGL_ERR, "Sector size %i larger than maximum %i\n", sector_size, STREAM_MAX_SECTOR_SIZE);
sector_size = STREAM_MAX_SECTOR_SIZE;
}
len=cache_read(s->cache_data,s->buffer, ((cache_vars_t*)s->cache_data)->sector_size);
len=cache_read(s->cache_data,s->buffer, sector_size);
//printf("cache_stream_fill_buffer->read -> %d\n",len);
if(len<=0){ s->eof=1; s->buf_pos=s->buf_len=0; return 0; }

3
stream/stream.h
View File

@ -53,6 +53,7 @@
#define STREAMTYPE_BLURAY 20
#define STREAM_BUFFER_SIZE 2048
#define STREAM_MAX_SECTOR_SIZE (8*1024)
#define VCD_SECTOR_SIZE 2352
#define VCD_SECTOR_OFFS 24
@ -166,7 +167,7 @@ typedef struct stream {
#ifdef CONFIG_NETWORKING
streaming_ctrl_t *streaming_ctrl;
#endif
unsigned char buffer[STREAM_BUFFER_SIZE>VCD_SECTOR_SIZE?STREAM_BUFFER_SIZE:VCD_SECTOR_SIZE];
unsigned char buffer[STREAM_BUFFER_SIZE>STREAM_MAX_SECTOR_SIZE?STREAM_BUFFER_SIZE:STREAM_MAX_SECTOR_SIZE];
} stream_t;
#ifdef CONFIG_NETWORKING