From 7d53b43a3a482f2ae4b5eedb907345473c244f01 Mon Sep 17 00:00:00 2001 From: Thomas Schmitt Date: Wed, 5 Sep 2007 19:56:30 +0000 Subject: [PATCH] Changes in plans as discussed up to Sep 5 2007 --- libisoburn/burn_wrap.c | 190 +++++++++++++++------------------------- libisoburn/isoburn.c | 7 +- libisoburn/isoburn.h | 14 +-- libisoburn/libisoburn.h | 4 +- 4 files changed, 80 insertions(+), 135 deletions(-) diff --git a/libisoburn/burn_wrap.c b/libisoburn/burn_wrap.c index 19788789..8a5d4d50 100644 --- a/libisoburn/burn_wrap.c +++ b/libisoburn/burn_wrap.c @@ -53,15 +53,26 @@ static int isoburn_welcome_media(struct isoburn **o, struct burn_drive *d, ret= burn_disc_get_multi_caps(d, BURN_WRITE_NONE, &caps, 0); if(ret<=0) goto ex; + ret= isoburn_new(o, 0); + if(ret<=0) + goto ex; + (*o)->drive= d; if(caps->start_adr) { /* set emulation to overwriteable */ - ret= isoburn_new(o, 0); - if(ret<=0) - goto ex; (*o)->emulation_mode= 1; - (*o)->drive= d; ret= isoburn_start_emulation(*o, 0); - if(ret<=0) + if(ret<=0) { + (*o)->emulation_mode= -1; goto ex; + } + } else { + + /* >>> recognize unsuitable media */; + + } + ret = isoburn_read_volset(*o); + if(ret<=0) { + (*o)->emulation_mode= -1; + goto ex; } ret= 1; ex: @@ -72,48 +83,69 @@ ex: int isoburn_drive_scan_and_grab(struct burn_drive_info *drive_infos[], - char* adr, int load) + char *adr, int load) { - int ret; + int ret, treatment= 0; struct stat stbuf; - char libburn_drive_adr[BURN_DRIVE_ADR_LEN]; + char libburn_drive_adr[BURN_DRIVE_ADR_LEN], *adrpt, *stdio_adr= NULL; struct isoburn *o= NULL; - ret= burn_drive_convert_fs_adr(adr, libburn_drive_adr); - if(ret<0) - return(ret); - if(ret==0) { - if(stat(adr,&stbuf)!=-1) { + adrpt= adr; + if(strncmp(adr, "grow:", 5)==0) { + treatment= 1; + adrpt+= 5; + if(stat(adrpt,&stbuf)!=-1) if(S_ISREG(stbuf.st_mode) || S_ISBLK(stbuf.st_mode)) { - ret= burn_drive_grab_dummy(drive_infos, adr); - if(ret<=0) - return(ret); - o->emulation_mode= 2; /* standard i/o */ - } else { - - /* >>> unsuitable file type */; - - return(0); + stdio_adr= calloc(strlen(adrpt)+6+1, 1); + if(stdio_adr==NULL) + {ret= -1; goto ex;} + sprintf(stdio_adr, "stdio:%s", adrpt); /* use pseudo-drive */ + adrpt= stdio_adr; } - } else { + } else if(strncmp(adr, "modify:", 7)==0) { + treatment= 2; + adrpt+= 7; + } + ret= burn_drive_convert_fs_adr(adrpt, libburn_drive_adr); + if(treatment==0) { + if(ret>0) + treatment= 1; + else + treatment= 2; + } else if(treatment==1 && ret<=0) { - /* >>> file not found */; + /* >>> unsuitable media */; - return(0); - } - } else { - ret= burn_drive_scan_and_grab(drive_infos, adr, load); + ret= 0; goto ex; + } + o->treatment= treatment; + + if(treatment==1) { + ret= burn_drive_scan_and_grab(drive_infos, adrpt, load); if(ret<=0) goto ex; ret= isoburn_welcome_media(&o, (*drive_infos)[0].drive, 0); if(ret<=0) goto ex; + } else { + if(stat(adrpt,&stbuf)!=-1) + if(! S_ISREG(stbuf.st_mode)) { + + /* >>> unsuitable target for modify */; + + ret= 0; goto ex; + } + + /* >>> welcome file for modfication treatment */; + } ret= 1; ex: if(ret<=0) isoburn_destroy(&o,0); + if(stdio_adr!=NULL) + free(stdio_adr); return(ret); } @@ -237,98 +269,22 @@ int isoburn_disc_track_lba_nwa(struct burn_drive *d, void isoburn_disc_write(struct burn_write_opts *opts, struct burn_disc *disc) { + int ret, multi= 1; + struct isoburn *o; + struct burn_drive *drive; + + drive= burn_write_opts_get_drive(opts); + ret= isoburn_find_emulator(&o, drive, 0); + if(ret<0) + return; + if(o!=NULL) + if(o->emulation_mode!=0) + multi= 0; + burn_write_opts_set_multi(opts, multi); burn_disc_write(opts, disc); } -#ifdef NIX - -int isoburn_random_access_write(struct burn_drive *d, off_t byte_address, - char *data, off_t data_count, int flag) -{ - int ret, mode = O_RDWR | O_LARGEFILE | O_CREAT; - struct isoburn *o; - - ret= isoburn_find_emulator(&o, d, 0); - if(ret<0) - return(0); - if(o->emulation_mode==2) { - if(flag&1) - mode|= O_SYNC; - o->stdio_fd= open(o->stdio_path, mode); - if(o->stdio_fd==-1) { - - /* >>> cannot open stdio_path */; - return(0); - } - if(lseek(o->stdio_fd, byte_address, SEEK_SET)==-1) { - - /* >>> cannot reach given byte_address */; - ret= 0; goto close_stdio; - } - if(write(o->stdio_fd, data, data_count) != data_count) { - - /* >>> cannot write desired number of bytes */; - ret= 0; goto close_stdio; - } - - ret= 1; -close_stdio:; - close(o->stdio_fd); o->stdio_fd= -1; - } else if(o->emulation_mode==-1) - ret= 0; - else - ret= burn_random_access_write(d, byte_address, data, data_count, flag); - return(ret); -} - - -int burn_read_data(struct burn_drive *d, off_t byte_address, - char data[], off_t data_size, off_t *data_count, int flag) -{ - int ret, mode = O_RDONLY | O_LARGEFILE; - off_t count, todo; - struct isoburn *o; - - ret= isoburn_find_emulator(&o, d, 0); - if(ret<0) - return(0); - if(o->emulation_mode==2) { - o->stdio_fd= open(o->stdio_path, mode); - if(o->stdio_fd==-1) { - - /* >>> cannot open stdio_path */; - return(0); - } - if(lseek(o->stdio_fd, byte_address, SEEK_SET)==-1) { - - /* >>> cannot reach given byte_address */; - ret= 0; goto close_stdio; - } - for(todo= data_size; todo>0; ) { - count= read(o->stdio_fd, data+(data_size-todo), todo); - if(count<=0) - break; - todo-= count; - } - if(todo>0) { - - /* >>> cannot read desired number of bytes */; - ret= 0; goto close_stdio; - } - ret= 1; -close_stdio:; - close(o->stdio_fd); o->stdio_fd= -1; - } else if(o->emulation_mode==-1) - ret= 0; - else - ret= burn_read_data(d, byte_address, data, data_size, data_count, flag); - return(ret); -} - -#endif /* NIX */ - - void isoburn_drive_release(struct burn_drive *drive, int eject) { int ret; @@ -380,7 +336,7 @@ void isoburn_write_opts_set_start_byte(struct burn_write_opts *opts, drive= burn_write_opts_get_drive(opts); ret= isoburn_find_emulator(&o, drive, 0); - if(ret<=0) + if(ret<=0) /* no emulation, no burn_write_opts_set_start_byte() */ goto ex; ret= burn_disc_get_multi_caps(drive, BURN_WRITE_NONE, &caps, 0); if(ret<=0) diff --git a/libisoburn/isoburn.c b/libisoburn/isoburn.c index f512955e..3b4a15ea 100644 --- a/libisoburn/isoburn.c +++ b/libisoburn/isoburn.c @@ -49,12 +49,7 @@ int isoburn_new(struct isoburn **objpt, int flag) o->emulation_mode= 0; o->min_start_byte= 0; o->nwa= 0; - -#ifdef NIX - o->stdio_path= NULL; - o->stdio_fd= -1; -#endif /* NIX */ - + o->treatment= 1; o->target_ropts= NULL; o->new_wopts= NULL; for(i=0;i<65536;i++) diff --git a/libisoburn/isoburn.h b/libisoburn/isoburn.h index 232a7a3a..10b6b4e9 100644 --- a/libisoburn/isoburn.h +++ b/libisoburn/isoburn.h @@ -25,7 +25,6 @@ struct isoburn { /* -1= inappropriate media state detected */ /* 0= libburn multi-session media, resp. undecided yet */ /* 1= random access media */ - /* 2= standard i/o file */ int emulation_mode; /* Although rarely used, libburn can operate on several */ @@ -44,18 +43,12 @@ struct isoburn { /* Aligned start address to be used for processing (counted in blocks) */ int nwa; -#ifdef NIX - - /* Path for eventual stdandard i/o (see .emulation_mode) */ - char *stdio_path; - - /* File descriptor for stdandard i/o. Points to stdio_path object if not -1 */ - int stdio_fd; - -#endif /* NIX */ /* --- Vreixo's part --- */ + /* Expansion treatment strategy: 1= grow, 2= modify, (any use for 0 ?) */ + int treatment; + /* The options for reading the old image. */ /* target_ropts.size will contain the number of blocks of the image. */ struct ecma119_read_opts *target_ropts; @@ -101,6 +94,7 @@ int isoburn_start_emulation(struct isoburn *o, int flag); int isoburn_new_rwopts(struct isoburn *o); int isoburn_free_rwopts(struct isoburn *o); int isoburn_invalidate_iso(struct isoburn *o, int flag); +int isoburn_read_volset(struct isoburn *o); #endif /* Isoburn_includeD */ diff --git a/libisoburn/libisoburn.h b/libisoburn/libisoburn.h index 4967ede0..cab47381 100644 --- a/libisoburn/libisoburn.h +++ b/libisoburn/libisoburn.h @@ -104,7 +104,7 @@ int isoburn_disc_track_lba_nwa(struct burn_drive *d, struct burn_write_opts *o, BURN_DRIVE_IDLE is returned. Wrapper for: burn_disc_write() */ -int isoburn_disc_write(struct burn_write_opts *o, struct burn_disc *disc); +void isoburn_disc_write(struct burn_write_opts *o, struct burn_disc *disc); /** Call this after isoburn_disc_write has finished and burn_drive_wrote_well() @@ -112,7 +112,7 @@ int isoburn_disc_write(struct burn_write_opts *o, struct burn_disc *disc); multi-session functionality, if needed at all. Let libisoburn decide. Not a wrapper, but peculiar to libburn. */ -int isoburn_update_iso_descriptors(struct burn_drive *drive); +int isoburn_activate_session(struct burn_drive *drive); /** Release an aquired drive.