New -find action make_md5 to equip files from old images with MD5

xorriso/xorriso.1

@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO 1 "Aug 20, 2009"
+.TH XORRISO 1 "Aug 22, 2009"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -1461,6 +1461,11 @@ namespace "isofs".
 and reports if mismatch.
 .br
 E.g.: -find / -not -pending_data -exec check_md5 FAILURE --
+\fBmake_md5\fR equips a data file with an MD5 sum of its content. Useful to
+upgrade the files in the loaded image to full MD5 coverage by the next
+commit with -md5 "on".
+.br
+E.g.: -find / -type f -not -has_md5 -exec make_md5 --
 .br
 \fBsetfattr\fR sets or deletes xattr name value pairs.
 .br

xorriso/xorriso.c

@@ -4956,6 +4956,7 @@ int Xorriso_destroy(struct XorrisO **xorriso, int flag)
 int Xorriso_set_change_pending(struct XorrisO *xorriso, int flag)
 {
  xorriso->volset_change_pending= 1;
+ if(!(flag & 2))
    xorriso->hln_change_pending= 1;
  return(1);
 }
@@ -7106,9 +7107,19 @@ int Xorriso_status(struct XorrisO *xorriso, char *filter, FILE *fp, int flag)
  if(!(is_default && no_defaults))
    Xorriso_status_result(xorriso,filter,fp,flag&2);
 
- is_default= ((xorriso->do_md5 & (1 | 2 | 4 | 8)) == 0);
+ is_default= ((xorriso->do_md5 & 31) == 0);
- sprintf(line, "-md5 %s\n", (xorriso->do_md5 & 1 ?
+ sprintf(line, "-md5 ");
-                           xorriso->do_md5 & 8 ? "all" : "on" : "off"));
+ if(xorriso->do_md5 & 1) {
+   if((xorriso->do_md5 & (8)) == (8)) {
+     strcat(line, "all\n");
+   } else {
+     strcat(line, "on");
+     if(xorriso->do_md5 & 8)
+       strcat(line, ":stability_check_on");
+     strcat(line, "\n");
+   }
+ } else
+   strcat(line, "off\n");
  if(!(is_default && no_defaults))
    Xorriso_status_result(xorriso,filter,fp,flag&2);
 
@@ -12557,10 +12568,7 @@ int Xorriso_report_md5_outcome(struct XorrisO *xorriso, char *severity,
  int has_md5;
 
  has_md5= Xorriso_image_has_md5(xorriso, 0);
- if (has_md5 <= 0) {
+ if(xorriso->find_check_md5_result & 1) {
-   sprintf(xorriso->result_line,
-           "There is no MD5 checksum array loaded.\n");
- } else if(xorriso->find_check_md5_result & 1) {
    sprintf(xorriso->result_line,
            "Mismatch detected between file contents and MD5 checksums.\n");
  } else if(xorriso->find_check_md5_result & 8) {
@@ -12568,7 +12576,12 @@ int Xorriso_report_md5_outcome(struct XorrisO *xorriso, char *severity,
            "File contents and their MD5 checksums match.\n");
  } else {
    sprintf(xorriso->result_line,
-           "Not a single file with MD5 checksum was found.\n");
+           "Not a single file with MD5 checksum was found.");
+   if(has_md5 <= 0)
+     strcat(xorriso->result_line,
+            " (There is no MD5 checksum array loaded.)\n");
+   else
+     strcat(xorriso->result_line, "\n");
  }
  Xorriso_result(xorriso,0);
  if(xorriso->find_check_md5_result & 2) {
@@ -13457,15 +13470,6 @@ int Xorriso_option_check_md5(struct XorrisO *xorriso,
    Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
    goto ex;
  }
- ret= Xorriso_image_has_md5(xorriso, 0);
- if(ret <= 0) {
-   sprintf(xorriso->info_text,
-           "-check_md5: There is no MD5 checksum array loaded.");
-   if (strcmp(severity, "ALL") == 0)
-       severity= "WARNING";
-   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, severity, 0);
-   ret= -1; goto ex;
- }
 
  if(!(flag & (2 | 4))) {
    Xorriso_pacifier_reset(xorriso, 0);
@@ -15172,6 +15176,19 @@ not_enough_exec_arguments:;
        i+= 1;
        Findjob_set_action_target(job, 35, argv[i], 0);
        flag|= 8;
+       if(!(flag&2)) {
+         Xorriso_pacifier_reset(xorriso, 0);
+         mem_lut= xorriso->last_update_time;
+       }
+       if(!(flag & 1))
+         xorriso->find_check_md5_result= 0;
+     } else if(strcmp(cpt, "make_md5")==0) {
+       Findjob_set_action_target(job, 36, NULL, 0);
+       flag|= 8;
+       if(!(flag&2)) {
+         Xorriso_pacifier_reset(xorriso, 0);
+         mem_lut= xorriso->last_update_time;
+       }
      } else {
        sprintf(xorriso->info_text, "-find -exec: unknown action %s",
                Text_shellsafe(argv[i], sfe, 0));
@@ -15190,7 +15207,7 @@ sorry_ex:;
                       0);
  else if(flag & 8) {
    cpt= start_path;
-   ret= Xorriso_findi_sorted(xorriso, first_job, (off_t) 0, 1, &cpt, 8);
+   ret= Xorriso_findi_sorted(xorriso, first_job, (off_t) 0, 1, &cpt, 0);
  } else
    ret= Xorriso_findi(xorriso, first_job, NULL, (off_t) 0, NULL,
                       start_path, &dir_stbuf, 0, (flag&4)>>1);
@@ -15204,6 +15221,8 @@ ex:;
  else if(mem_lut!=xorriso->last_update_time && mem_lut!=0.0 && !(flag&2))
    Xorriso_pacifier_callback(xorriso, "content bytes read",
                              xorriso->pacifier_count, 0, "", 1);
+ if(first_job->action == 35 && !(flag & 1))
+   Xorriso_report_md5_outcome(xorriso, first_job->target, 0);
  if(access_acl_text != NULL)
    free(access_acl_text);
  if(default_acl_text != NULL)
@@ -16595,7 +16614,7 @@ int Xorriso_option_md5(struct XorrisO *xorriso, char *mode, int flag)
    if(l == 3 && strncmp(cpt, "off", l) == 0)
      xorriso->do_md5&= ~31;
    else if(l == 2 && strncmp(cpt, "on", l) == 0)
-     xorriso->do_md5|= 7 | 16;
+     xorriso->do_md5= (xorriso->do_md5 & ~31) | 7 | 16;
    else if(l == 3 && strncmp(cpt, "all", l) == 0)
      xorriso->do_md5|= 31;
    else if(l == 18 && strncmp(cpt, "stability_check_on", l) == 0)

xorriso/xorriso_private.h

@@ -128,6 +128,7 @@ struct XorrisO { /* the global context of xorriso */
                  bit1= write session MD5
                  bit2= write MD5 for each data file
                  bit3= make file content stability check by double reading
+                 bit4= use recorded MD5 as proxy of ISO file
                */
 
  int relax_compliance;        /* opaque bitfield to be set by xorrisoburn */
@@ -444,6 +445,7 @@ struct XorrisO { /* the global context of xorriso */
 };
 
 
+/* @param flag bit0= do not set hln_change_pending */
 int Xorriso_set_change_pending(struct XorrisO *xorriso, int flag);
 
 int Xorriso_prepare_regex(struct XorrisO *xorriso, char *adr, int flag);
@@ -956,6 +958,7 @@ struct FindjoB {
    33= get_any_xattr
    34= get_md5
    35= check_md5
+   36= make_md5
  */
  int action;
  int prune;

xorriso/xorriso_timestamp.h

@@ -1 +1 @@
-#define Xorriso_timestamP "2009.08.20.204309"
+#define Xorriso_timestamP "2009.08.22.184241"

xorriso/xorrisoburn.c

@@ -7621,6 +7621,10 @@ int Xorriso_findi_action(struct XorrisO *xorriso, struct FindjoB *job,
      xorriso->find_check_md5_result|= 4;
    if(ret >= 0)
      ret= 1;
+ } else if(action == 36) { /* make_md5 */
+   ret = Xorriso_make_md5(xorriso, (void *) node, show_path, 0);
+   if(ret >= 0)
+     ret= 1;
  } else { /* includes : 15 in_iso */
    sprintf(xorriso->result_line, "%s\n", Text_shellsafe(show_path, sfe, 0));
    Xorriso_result(xorriso, 0);
@@ -7969,7 +7973,7 @@ int Xorriso_findi(struct XorrisO *xorriso, struct FindjoB *job,
  if(action==1 || action==2 || action==3 || action==17 || action == 28 ||
     action == 32)
    hflag|= 2; /* need freedom to manipulate image */
- if(action==14 || action==17 || action == 28)
+ if(action==14 || action==17 || action == 28 || action == 35 || action == 36)
    hflag|= 4; /* need LBA sorted iteration for good data reading performance */
  ret= Xorriso_findi_iter(xorriso, dir_node, &mem,
                          &iter, &node_array, &node_count, &node_idx,
@@ -8180,7 +8184,6 @@ int Xorriso_path_from_lba(struct XorrisO *xorriso, IsoNode *node, int lba,
 /* @param flag bit0= do not dive into trees
                bit1= do not perform job->action on resulting node array
                bit2= do not free node_array after all actions are done
-               bit3= eventually issue MD5 mismatch event
 */
 int Xorriso_findi_sorted(struct XorrisO *xorriso, struct FindjoB *job,
                          off_t boss_mem, int filec, char **filev, int flag)
@@ -8194,8 +8197,6 @@ int Xorriso_findi_sorted(struct XorrisO *xorriso, struct FindjoB *job,
 
  array_job.start_path= NULL;
 
- if((flag & 8) && job->action == 35)
-   xorriso->find_check_md5_result= 0;
  if(job->action>=9 && job->action<=13) { /* actions which have own findjobs */
    /* array_job replaces the hindmost job in the chain */
    for(hindmost= job; hindmost->subjob != NULL; hindmost= hindmost->subjob)
@@ -8293,15 +8294,13 @@ int Xorriso_findi_sorted(struct XorrisO *xorriso, struct FindjoB *job,
 
    ret= Xorriso_findi_action(xorriso, hindmost, NULL, (off_t) 0,
                              abs_path, abs_path, node, 0, 1);
-   if(ret <= 0)
+   if(ret <= 0 || xorriso->request_to_abort)
      if(Xorriso_eval_problem_status(xorriso, ret, 1|2)<0)
        goto ex;
  }
 
  ret= 1;
 ex:;
- if((flag & 8) && job->action == 35)
-   Xorriso_report_md5_outcome(xorriso, job->target, 0);
  if(!(flag & (2 | 4)))
    Xorriso_destroy_node_array(xorriso, 0);
  if(hmboss != NULL)
@@ -12282,6 +12281,38 @@ ex:;
 }
 
 
+int Xorriso_make_md5(struct XorrisO *xorriso, void *in_node, char *path,
+                     int flag)
+{
+ int ret;
+ off_t size;
+ IsoNode *node;
+ 
+ node= (IsoNode *) in_node;
+ if(node == NULL) {
+   ret= Xorriso_get_node_by_path(xorriso, path, NULL, &node, 0);
+   if(ret <= 0)
+     return(ret);
+ }
+ if(!LIBISO_ISREG(node))
+   return(0);
+ ret= iso_file_make_md5((IsoFile *) node, 0);
+ size= iso_file_get_size((IsoFile *) node);
+ xorriso->pacifier_count+= size;
+ xorriso->pacifier_byte_count+= size;
+ Xorriso_pacifier_callback(xorriso, "content bytes read",
+                           xorriso->pacifier_count, 0, "", 0);
+ Xorriso_process_msg_queues(xorriso, 0);
+ if(ret < 0) {
+   Xorriso_report_iso_error(xorriso, "", ret,
+                            "Error when computing MD5", 0, "FAILURE", 1);
+   return(0);
+ }
+ Xorriso_set_change_pending(xorriso, 1);
+ return(1);
+}
+
+
 /* @param node      Opaque handle to IsoNode which is to be inquired instead of                     path if it is not NULL.
    @param path      is used as address if node is NULL.
    @param flag      bit0= do not report to result but only indicate outcome

xorriso/xorrisoburn.h

@@ -459,6 +459,8 @@ int Xorriso_finish_hl_update(struct XorrisO *xorriso, int flag);
 int Xorriso_get_md5(struct XorrisO *xorriso, void *in_node, char *path,
                     char md5[16], int flag);
 
+int Xorriso_make_md5(struct XorrisO *xorriso, void *in_node, char *path,
+                     int flag);
 
 int Xorriso_md5_start(struct XorrisO *xorriso, void **ctx, int flag);