static int setup_source(struct Source *p,char *frag) {
struct stat filestat;
// Open the fragment file rw if possible, else ro
- range = strrchr( frag, '/' ); // last '/'
- p->filename = range? strndup( frag, range - frag ) : frag;
+ // First try the fragment in full, thereafter with range appendix
+ if ( stat( frag, &filestat ) == 0 ) {
+ p->filename = strdup( frag );
+ range = 0;
+ } else {
+ range = strrchr( frag, '/' ); // last '/'
+ p->filename = range? strndup( frag, range - frag ) : frag;
+ }
p->fd = open( p->filename, O_RDWR );
int rdonly = 0;
if ( p->fd < 0 ) {
perror( p->filename );
return 1; // Error return
}
- if ( stat( p->filename, &filestat ) ) {
+ if ( ( range == 0 ) && stat( p->filename, &filestat ) ) {
perror( p->filename );
return 1;
}
p->to = filestat.st_size;
// Process any range variation
if ( range && *(++range) ) {
- int a,b;
+ long int a,b;
if ( 0 ) {
- } else if ( RANGE( sscanf( range, "%d:%d%n", &a, &b, &c ), 2 )) {
+ } else if ( RANGE( sscanf( range, "%ld:%ld%n", &a, &b, &c ), 2 )) {
p->from = ( a < 0 )? ( p->to + a ) : a;
p->to = ( b < 0 )? ( p->to + b ) : b;
- } else if ( RANGE( sscanf( range, "%d+%d%n", &a, &b, &c ), 2 )) {
+ } else if ( RANGE( sscanf( range, "%ld+%ld%n", &a, &b, &c ), 2 )) {
p->from = ( a < 0 )? ( p->to + a ) : a;
p->to = ( ( b < 0 )? p->to : p->from ) + b;
- } else if ( RANGE( sscanf( range, "%d+%n", &a, &c ), 1 )) {
+ } else if ( RANGE( sscanf( range, "%ld+%n", &a, &c ), 1 )) {
p->from = ( a < 0 )? ( p->to + a ) : a;
- } else if ( RANGE( sscanf( range, ":%d%n", &b, &c ), 1 )) {
+ } else if ( RANGE( sscanf( range, ":%ld%n", &b, &c ), 1 )) {
p->to = ( b < 0 )? ( p->to + b ) : b;
- } else if ( RANGE( sscanf( range, "%d:%n", &a, &c ), 1 )) {
+ } else if ( RANGE( sscanf( range, "%ld:%n", &a, &c ), 1 )) {
p->from = ( a < 0 )? ( p->to + a ) : a;
- } else if ( RANGE( sscanf( range, "%d%n", &a, &c ), 1 )) {
+ } else if ( RANGE( sscanf( range, "%ld%n", &a, &c ), 1 )) {
if ( a >= 0 ) {
p->from = a;
} else {
return size;
}
+#define PUSHBUF 104857600
+/**
+ * Write data from overlay to source.
+ */
+static void push_oly(off_t beg, off_t end) {
+ static char * buffer = 0;
+ // Pretend that there isn't an overlay
+ char *filename = overlay.source.filename;
+ if ( buffer == 0 ) {
+ buffer = malloc( PUSHBUF );
+ if ( buffer == 0 ) {
+ fprintf( stderr, "** OOM!!\n" );
+ exit( 1 );
+ }
+ }
+ overlay.source.filename = 0;
+ while ( beg < end ) {
+ off_t size = end - beg;
+ if ( size > PUSHBUF ) {
+ size = PUSHBUF;
+ }
+ if ( lseek( overlay.source.fd, beg, SEEK_SET ) < 0 ) {
+ fprintf( stderr, "** Cannot seek overlay at %ld\n", beg );
+ break;
+ }
+ size = read( overlay.source.fd, buffer, size );
+ if ( write_block( beg, buffer, size ) < 0 ) {
+ fprintf( stderr, "** Cannot push %ld bytes at %ld\n", size, beg );
+ }
+ beg += size;
+ }
+ overlay.source.filename = filename;
+}
+
static void fusefile_destroy(void *data) {
char *mnt = (char*) data; // As passed to fuse_main
#if DEBUG
/**
* Dump the current fragmentation to stdout.
*/
-static int dump_fragments() {
+static int dump_fragments(int push) {
int oly = 0;
int src = 0;
size_t pos = 0;
for ( ; src < sources.count &&
ENDSOURCE( sources.array[ src ] ) <= x; src++ ) {
// Dump sources.array[src] in full
- fprintf( stdout, "%s/%ld:%ld\n",
- sources.array[ src ].filename,
- pos - sources.array[ src ].start,
- sources.array[ src ].to );
+ if ( !push ) {
+ fprintf( stdout, "%s/%ld:%ld\n",
+ sources.array[ src ].filename,
+ pos - sources.array[ src ].start,
+ sources.array[ src ].to );
+ }
pos = ENDSOURCE( sources.array[ src ] );
}
- if ( sources.array[ src ].start < x ) {
+ if ( ( src < sources.count ) && ( sources.array[ src ].start < x ) ) {
// Dump sources.array[src] up to x;
- fprintf( stdout, "%s/%ld:%ld\n",
- sources.array[ src ].filename,
- pos - sources.array[ src ].start,
- x - sources.array[ src ].start );
+ if ( !push ) {
+ fprintf( stdout, "%s/%ld:%ld\n",
+ sources.array[ src ].filename,
+ pos - sources.array[ src ].start,
+ x - sources.array[ src ].start );
+ }
pos = ENDSOURCE( sources.array[ src ] );
}
if ( oly < overlay.count ) {
- fprintf( stdout, "%s/%ld:%ld\n",
- overlay.source.filename,
- overlay.table[ oly ].beg,
- overlay.table[ oly ].end );
+ if ( !push ) {
+ fprintf( stdout, "%s/%ld:%ld\n",
+ overlay.source.filename,
+ overlay.table[ oly ].beg,
+ overlay.table[ oly ].end );
+ } else {
+ push_oly( overlay.table[ oly ].beg, overlay.table[ oly ].end );
+ }
pos = overlay.table[ oly++ ].end;
}
for ( ; src < sources.count &&
}
fuseargc = setup_argv( fuseargc, &argv );
if ( strcmp( "-dump", argv[ 1 ] ) == 0 ) {
- return dump_fragments();
+ return dump_fragments( 0 );
+ }
+ if ( strcmp( "-push", argv[ 1 ] ) == 0 ) {
+ return dump_fragments( 1 );
}
struct fuse_args args = FUSE_ARGS_INIT( fuseargc, argv );
if ( fuse_parse_cmdline( &args, &mnt, &mt, &fg ) ) {