static int dos_write(direntry_t *entry, MainParam_t *mp, int needfilter) /* write a messy dos file to another messy dos file */ { int result; Arg_t * arg = (Arg_t *) (mp->arg); const char *targetName = mpPickTargetName(mp); if(entry && arg->preserveAttributes) arg->attr = entry->dir.attr; else arg->attr = ATTR_ARCHIVE; arg->needfilter = needfilter; if (entry && mp->targetDir == entry->Dir){ arg->ch.ignore_entry = -1; arg->ch.source = entry->entry; } else { arg->ch.ignore_entry = -1; arg->ch.source = -2; } result = mwrite_one(mp->targetDir, targetName, 0, writeit, (void *)arg, &arg->ch); if(result == 1) return GOT_ONE; else return ERROR_ONE; }
Stream_t *createDir(Stream_t *Dir, const char *filename, ClashHandling_t *ch, unsigned char attr, time_t mtime) { CreateArg_t arg; int ret; arg.Dir = Dir; arg.attr = attr; arg.mtime = mtime; if (!getfreeMinClusters(Dir, 1)) return NULL; ret = mwrite_one(Dir, filename,0, makeit, &arg, ch); if(ret < 1) return NULL; else return arg.NewDir; }
void mlabel(int argc, char **argv, int type) { char *newLabel; int verbose, clear, interactive, show; direntry_t entry; int result=0; char longname[VBUFSIZE]; char shortname[45]; ClashHandling_t ch; struct MainParam_t mp; Stream_t *RootDir; int c; int mangled; enum { SER_NONE, SER_RANDOM, SER_SET } set_serial = SER_NONE; long serial = 0; int need_write_boot = 0; int have_boot = 0; char *eptr; union bootsector boot; Stream_t *Fs=0; int r; struct label_blk_t *labelBlock; int isRo=0; int *isRop=NULL; init_clash_handling(&ch); ch.name_converter = label_name; ch.ignore_entry = -2; verbose = 0; clear = 0; show = 0; if(helpFlag(argc, argv)) usage(0); while ((c = getopt(argc, argv, "i:vcsnN:h")) != EOF) { switch (c) { case 'i': set_cmd_line_image(optarg, 0); break; case 'v': verbose = 1; break; case 'c': clear = 1; break; case 's': show = 1; break; case 'n': set_serial = SER_RANDOM; srandom((long)time (0)); serial=random(); break; case 'N': set_serial = SER_SET; serial = strtol(optarg, &eptr, 16); if(*eptr) { fprintf(stderr, "%s not a valid serial number\n", optarg); exit(1); } break; case 'h': usage(0); default: usage(1); } } if (argc - optind != 1 || !argv[optind][0] || argv[optind][1] != ':') usage(1); init_mp(&mp); newLabel = argv[optind]+2; if(strlen(newLabel) > VBUFSIZE) { fprintf(stderr, "Label too long\n"); FREE(&RootDir); exit(1); } interactive = !show && !clear &&!newLabel[0] && (set_serial == SER_NONE); if(!clear && !newLabel[0]) { isRop = &isRo; } RootDir = open_root_dir(argv[optind][0], isRop ? 0 : O_RDWR, isRop); if(isRo) { show = 1; interactive = 0; } if(!RootDir) { fprintf(stderr, "%s: Cannot initialize drive\n", argv[0]); exit(1); } initializeDirentry(&entry, RootDir); r=vfat_lookup(&entry, 0, 0, ACCEPT_LABEL | MATCH_ANY, shortname, longname); if (r == -2) { FREE(&RootDir); exit(1); } if(show || interactive){ if(isNotFound(&entry)) printf(" Volume has no label\n"); else if (*longname) printf(" Volume label is %s (abbr=%s)\n", longname, shortname); else printf(" Volume label is %s\n", shortname); } /* ask for new label */ if(interactive){ newLabel = longname; fprintf(stderr,"Enter the new volume label : "); if(fgets(newLabel, VBUFSIZE, stdin) == NULL) { newLabel[0] = '\0'; fprintf(stderr, "\n"); } if(newLabel[0]) newLabel[strlen(newLabel)-1] = '\0'; } if((!show || newLabel[0]) && !isNotFound(&entry)){ /* if we have a label, wipe it out before putting new one */ if(interactive && newLabel[0] == '\0') if(ask_confirmation("Delete volume label (y/n): ")){ FREE(&RootDir); exit(0); } entry.dir.attr = 0; /* for old mlabel */ wipeEntry(&entry); } if (newLabel[0] != '\0') { ch.ignore_entry = 1; result = mwrite_one(RootDir,newLabel,0,labelit,NULL,&ch) ? 0 : 1; } have_boot = 0; if( (!show || newLabel[0]) || set_serial != SER_NONE) { Fs = GetFs(RootDir); have_boot = (force_read(Fs,boot.characters,0,sizeof(boot)) == sizeof(boot)); } if(WORD_S(fatlen)) { labelBlock = &boot.boot.ext.old.labelBlock; } else { labelBlock = &boot.boot.ext.fat32.labelBlock; } if(!show || newLabel[0]){ dos_name_t dosname; const char *shrtLabel; doscp_t *cp; if(!newLabel[0]) shrtLabel = "NO NAME "; else shrtLabel = newLabel; cp = GET_DOSCONVERT(Fs); label_name(cp, shrtLabel, verbose, &mangled, &dosname); if(have_boot && boot.boot.descr >= 0xf0 && labelBlock->dos4 == 0x29) { strncpy(labelBlock->label, dosname.base, 11); need_write_boot = 1; } } if((set_serial != SER_NONE) & have_boot) { if(have_boot && boot.boot.descr >= 0xf0 && labelBlock->dos4 == 0x29) { set_dword(labelBlock->serial, serial); need_write_boot = 1; } } if(need_write_boot) { force_write(Fs, (char *)&boot, 0, sizeof(boot)); } FREE(&RootDir); exit(result); }
int fatlabel_set_label(const char* device_name, const char* new_label) { if (strlen(new_label) > VBUFSIZE) return -1; /* * 1. Init clash handling */ struct ClashHandling_t ch; init_clash_handling(&ch); ch.name_converter = label_name; ch.ignore_entry = -2; /* * 2. Open root dir */ struct Stream_t* RootDir = fs_init(device_name, O_RDWR); if (RootDir) RootDir = OpenRoot(RootDir); if (!RootDir) { fprintf(stderr, "Opening root dir failed.\n"); return -2; } /* * 3. Init dir entry */ struct direntry_t entry; initializeDirentry(&entry, RootDir); /* * 4. Lookup vfat */ char longname[VBUFSIZE]; char shortname[45]; if (vfat_lookup(&entry, 0, 0, ACCEPT_LABEL | MATCH_ANY, shortname, longname) == -2) { fprintf(stderr, "Looking up vfat failed.\n"); free_stream(&RootDir); return -3; } /* * 5. Wipe existing entry. */ if (!isNotFound(&entry)) { /* if we have a label, wipe it out before putting new one */ entry.dir.attr = 0; /* for old mlabel */ wipeEntry(&entry); } /* * 6. Write new entry */ ch.ignore_entry = 1; /* don't try to write the label if it's empty */ int result = strlen(new_label) ? mwrite_one(RootDir, new_label, labelit, &ch) : 0; /* * 7. Load FAT boot record */ union bootsector boot; struct Stream_t* Fs = GetFs(RootDir); int have_boot = force_read(Fs, boot.characters, 0, sizeof(boot)) == sizeof(boot); struct label_blk_t* labelBlock = WORD_S(fatlen) ? &boot.boot.ext.old.labelBlock : &boot.boot.ext.fat32.labelBlock; /* * 8. Get "dosconvert" struct */ struct dos_name_t dosname; struct doscp_t* cp = GET_DOSCONVERT(Fs); /* * 9. Convert label */ int mangled = 0; label_name(cp, new_label, &mangled, &dosname); /* * 10. Overwrite FAT boot record */ if (have_boot && boot.boot.descr >= 0xf0 && labelBlock->dos4 == 0x29) { strncpy(labelBlock->label, dosname.base, 11); force_write(Fs, (char *)&boot, 0, sizeof(boot)); } free_stream(&RootDir); fs_close(Fs); return result; }