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annotate mpffs/ls.c @ 30:9c3c5a572b57

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mpffs-ls works with the length code stubbed out
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 30 Jun 2013 06:28:58 +0000
parents
children 3cca8070ef0f
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30
9c3c5a572b57 mpffs-ls works with the length code stubbed out
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 /*
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2 * This module contains the main function and other code specific to mpffs-ls
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3 */
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4
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5 #include <sys/types.h>
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6 #include <ctype.h>
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7 #include <stdio.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <stdlib.h>
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11 #include <unistd.h>
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12 #include "types.h"
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13 #include "struct.h"
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14
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15 extern char *imgfile;
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16 extern struct objinfo root;
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17 extern int verbose;
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18
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19 char workpath[512];
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20
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21 u_long
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22 get_file_size(head)
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23 struct objinfo *head;
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24 {
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25 return(0); /* stub, remains to be implemented */
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26 }
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27
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28 dump_dir(firstent, path_prefix)
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29 {
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30 int ent;
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31 struct objinfo obj;
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32 u_long size;
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33
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34 for (ent = firstent; ent != 0xFFFF; ent = obj.sibling) {
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35 obj.entryno = ent;
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36 get_index_entry(&obj);
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37 if (!obj.type) /* skip deleted objects w/o further validation */
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38 continue;
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39 validate_chunk(&obj);
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40 validate_obj_name(&obj);
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41 if (path_prefix + strlen(obj.dataptr) + 2 > sizeof workpath) {
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42 fprintf(stderr,
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43 "handling object at index %x, name \"%s\": path buffer overflow\n",
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44 obj.entryno, (char *)obj.dataptr);
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45 exit(1);
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46 }
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47 sprintf(workpath + path_prefix, "/%s", (char *)obj.dataptr);
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48 switch (obj.type) {
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49 case 0xF2:
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50 /* directory */
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51 printf("d %s\n", workpath);
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52 dump_dir(obj.descend, strlen(workpath));
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53 continue;
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54 case 0xF1:
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55 /* regular file */
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56 size = get_file_size(&obj);
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57 printf("- %7lu %s\n", size, workpath);
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58 continue;
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59 case 0xE1:
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60 /* special .journal file */
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61 printf("j %s\n", workpath);
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62 continue;
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63 default:
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64 printf("%s (index entry #%x): unexpected type %02X; skipping\n",
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65 workpath, obj.entryno, obj.type);
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66 continue;
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67 }
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68 }
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69 }
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70
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71 usage()
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72 {
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73 fprintf(stderr, "usage: mpffs-ls [options] ffs-image\n");
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74 exit(1);
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75 }
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76
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77 main(argc, argv)
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78 char **argv;
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79 {
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80 extern int optind;
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81
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82 parse_cmdline_options(argc, argv);
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83 if (argc - optind != 1)
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84 usage();
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85 imgfile = argv[optind];
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86 preliminaries();
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87 dump_dir(root.descend, 0);
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88 exit(0);
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89 }