diff options
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/h5diff.c | 625 | ||||
| -rw-r--r-- | tools/lib/h5diff.h | 1 |
2 files changed, 587 insertions, 39 deletions
diff --git a/tools/lib/h5diff.c b/tools/lib/h5diff.c index ad42a94..1615b8c 100644 --- a/tools/lib/h5diff.c +++ b/tools/lib/h5diff.c @@ -20,6 +20,31 @@ #include "h5tools.h" #include "h5tools_utils.h" +/* This code is layout for common code among tools */ +typedef enum toolname_t { + TOOL_H5DIFF, TOOL_H5LS, TOOL__H5DUMP /* add as necessary */ +} h5tool_toolname_t; +/* this struct can be used to differntiate among tools if necessary */ +typedef struct { + h5tool_toolname_t toolname; + int mode; +} h5tool_opt_t; + +/* To return link's target info + * Functions: + * H5tools_get_softlink_target_info() + * H5tools_get_extlink_target_info() + * Note: this may be move to h5tools code if used by other tools + */ +typedef struct { + const char *buf; /* IN: must be allocated along with H5Lget_info[li.u.val_size] */ + H5O_type_t type; /* OUT: target type */ + const char *path; /* OUT: target name */ + int is_path_malloced; /* VAR: Set to TRUE if path is malloced, so can be freed by checking this later. Needed when ext-link's target is soft-link */ + const char *extfile; /* OUT: if external link, external filename */ + hid_t extfile_id; /* OUT: if external link, external file id */ + h5tool_opt_t opt; /* IN: options */ +} h5tool_link_trg_info_t; /* * Debug printf macros. The prefix allows output filtering by test scripts. */ @@ -168,6 +193,236 @@ static void print_incoming_data(void) #endif /*------------------------------------------------------------------------- + * Function: H5tools_get_softlink_target_info + * + * Purpose: Get target object's type and path from soft-link path + * + * Patameters: + * - [IN] fileid : soft-link file id + * - [IN] linkpath : soft-link's source path + * - [IN] h5li : soft-link's source H5L_info_t + * - [OUT] trg_info: returning target info (refer to struct) + * + * Return: + * Success - 1 and return data via trg_info struct + * Fail - 0 + * + * Note: + * trg_info->buf must be allocated along with H5Lget_info[li.u.val_size] + * before passing to this function. + * + * Programmer: Jonathan Kim + * + * Date: Jan 20, 2010 + *-------------------------------------------------------------------------*/ +static int H5tools_get_softlink_target_info(hid_t file_id, const char * linkpath, H5L_info_t h5li, h5tool_link_trg_info_t *s_trg_info) +{ + H5O_type_t otype = H5O_TYPE_UNKNOWN; + H5O_info_t oinfo; + H5L_info_t linfo; + int ret = 0; /* init to fail */ + + + if((H5Lexists(file_id, linkpath, H5P_DEFAULT) <= 0)) + { + parallel_print("error: \"%s\" doesn't exist \n",linkpath); + goto out; + } + + if(H5Lget_info(file_id, linkpath, &linfo, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link info from \"%s\"\n",linkpath); + goto out; + } + + /* get target name for softlink */ + if(linfo.type == H5L_TYPE_SOFT) + { + /* s_trg_info->buf should be already allocated out of + * this function and free when done */ + if(H5Lget_val(file_id, linkpath, s_trg_info->buf, h5li.u.val_size, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link value from \"%s\"\n",s_trg_info->path); + goto out; + } + /* target path */ + s_trg_info->path = s_trg_info->buf; + } + /* if obj is hard link, will still get the type */ + else if (linfo.type == H5L_TYPE_HARD) + { + s_trg_info->path = linkpath; + } + + /*-------------------------------------------------------------- + * if link target or object exit, get type + */ + if((H5Lexists(file_id, s_trg_info->path, H5P_DEFAULT) == TRUE)) + { + + if(H5Oget_info_by_name(file_id, s_trg_info->path, &oinfo, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get object information for \"%s\"\n", s_trg_info->path); + goto out; + } + + otype = oinfo.type; + + + /* check unknown type */ + if (otype < H5O_TYPE_GROUP || otype >=H5O_TYPE_NTYPES) + { + parallel_print("<%s> is unknown type\n", s_trg_info->path); + goto out; + } + } + else + { + parallel_print("error: \"%s\" doesn't exist \n", s_trg_info->path); + goto out; + } + + /* set target obj type to return */ + s_trg_info->type = otype; + + /* succeed */ + ret = 1; +out: + return ret; +} + +/*------------------------------------------------------------------------- + * Function: H5tools_get_extlink_target_info + * + * Purpose: Get target object's type, path, file_id and filename from + * external-link + * + * Patameters: + * - [IN] fileid : external-link source file-id + * - [IN] linkpath : external-link source path + * - [IN] h5li : external-link source H5L_info_t + * - [OUT] trg_info : returning target info (refer to struct) + * + * Return: + * Success - 1 and return data via trg_info struct + * Fail - 0 + * + * Note: + * - trg_info->buf must be allocated along with H5Lget_info[li.u.val_size] + * before passing to this function. + * - if target is soft-link, trg_info->path will be malloced. so check if + * trg_info->is_path_malloced==TRUE, then free trg_info->path along with freeing + * trg_info->buf outside of this function. + * + * Programmer: Jonathan Kim + * + * Date: Jan 20, 2010 + *-------------------------------------------------------------------------*/ +static int H5tools_get_extlink_target_info(hid_t fileid, const char *linkpath, H5L_info_t h5li, h5tool_link_trg_info_t *trg_info) +{ + + hid_t extfile_id; + const char *extlink_file; + const char *extlink_path; + h5tool_link_trg_info_t soft_trg_info; + H5L_info_t slinfo; + int ret=0; /* init to Fail */ + + /* init */ + HDmemset(&soft_trg_info, 0, sizeof(h5tool_link_trg_info_t)); + trg_info->type = H5O_TYPE_UNKNOWN; + + if(H5Lget_val(fileid, linkpath, trg_info->buf, h5li.u.val_size, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link value from \"%s\"\n",linkpath); + goto out; + } + /*--------------------------------------- + * get target filename and object path + */ + if(H5Lunpack_elink_val(trg_info->buf, h5li.u.val_size, NULL, &extlink_file, &extlink_path)<0) + { + parallel_print("error: unable to unpack external link value\n"); + goto out; + } + + /* return target filename and obj path */ + trg_info->path = extlink_path; + trg_info->extfile = extlink_file; + + /* --------------------------------- + * get file id from external file + * mimicked from h5diff() for Parallel code + * , but not sure if it's needed + */ + H5E_BEGIN_TRY + { + /* open file */ + if((extfile_id = h5tools_fopen(extlink_file, H5F_ACC_RDONLY, H5P_DEFAULT, NULL, NULL, (size_t)0)) < 0) + { + parallel_print("error: <%s>: unable to open file\n", extlink_file); +#ifdef H5_HAVE_PARALLEL + if(g_Parallel) + /* Let tasks know that they won't be needed */ + phdiff_dismiss_workers(); +#endif + goto out; + } /* end if */ + } H5E_END_TRY; + + /* get external file id */ + trg_info->extfile_id = extfile_id; + + /* -------------------------------------------------- + * check if target is soft link, if so allocate buffer + */ + if((H5Lexists(trg_info->extfile_id, trg_info->path, H5P_DEFAULT) <= 0)) + { + parallel_print("error: \"%s\" doesn't exist \n", trg_info->path); + goto out; + } + if(H5Lget_info(trg_info->extfile_id, trg_info->path, &slinfo, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link info from \"%s\"\n", trg_info->path); + goto out; + } + + /* if ext-link's target is soft-link */ + if(slinfo.type == H5L_TYPE_SOFT) + { + size_t bufsize = (h5li.u.val_size > slinfo.u.val_size)?h5li.u.val_size:slinfo.u.val_size; + soft_trg_info.buf = (char*)HDcalloc(bufsize, sizeof(char)); + HDassert(trg_info->path); + } + + /* get target obj type */ + if(H5tools_get_softlink_target_info(trg_info->extfile_id, trg_info->path, h5li, &soft_trg_info)==0) + { + parallel_print("error: unable to get link info from \"%s\"\n", trg_info->path); + goto out; + } + + /* target obj type */ + trg_info->type = soft_trg_info.type; + + /* if ext-link's target is soft-link */ + if(slinfo.type == H5L_TYPE_SOFT) + { + trg_info->path = HDstrdup(soft_trg_info.buf); + HDassert(trg_info->path); + /* set TRUE so this can be freed later */ + trg_info->is_path_malloced = TRUE; + } + + /* Success */ + ret=1; +out: + if(soft_trg_info.buf) + HDfree(soft_trg_info.buf); + + return ret; +} +/*------------------------------------------------------------------------- * Function: h5diff * * Purpose: public function, can be called in an application program. @@ -826,9 +1081,34 @@ hsize_t diff_compare(hid_t file1_id, int f1 = 0; int f2 = 0; hsize_t nfound = 0; + ssize_t i,j; + + /* local variables for diff() */ + hid_t l_fileid1=file1_id; + hid_t l_fileid2=file2_id; + h5trav_type_t obj1type, obj2type; + const char *obj1name, *obj2name; + + /* softlink info to get target name and type */ + h5tool_link_trg_info_t softlinkinfo1; + h5tool_link_trg_info_t softlinkinfo2; + + /* external link file id */ + hid_t extfile1_id = (-1); + hid_t extfile2_id = (-1); + h5tool_link_trg_info_t extlinkinfo1; + h5tool_link_trg_info_t extlinkinfo2; - ssize_t i = h5trav_getindex (info1, obj1_name); - ssize_t j = h5trav_getindex (info2, obj2_name); + /* init softlink info */ + HDmemset(&softlinkinfo1, 0, sizeof(h5tool_link_trg_info_t)); + HDmemset(&softlinkinfo2, 0, sizeof(h5tool_link_trg_info_t)); + + /* init external link info */ + HDmemset(&extlinkinfo1, 0, sizeof(h5tool_link_trg_info_t)); + HDmemset(&extlinkinfo2, 0, sizeof(h5tool_link_trg_info_t)); + + i = h5trav_getindex (info1, obj1_name); + j = h5trav_getindex (info2, obj2_name); if (i == -1) { @@ -849,28 +1129,206 @@ hsize_t diff_compare(hid_t file1_id, } /* use the name with "/" first, as obtained by iterator function */ - obj1_name = info1->paths[i].path; - obj2_name = info2->paths[j].path; + obj1name = info1->paths[i].path; + obj2name = info2->paths[j].path; + + obj1type = info1->paths[i].type; + obj2type = info2->paths[j].type; + /*----------------------------------------------------------------- + * follow link option, compare with target object + */ + if (options->linkfollow) + { + H5L_info_t li1, li2; + + /*------------------------------------------------------------ + * Soft links + *------------------------------------------------------------*/ + + /*------------------------ + * if object1 softlink + */ + if (obj1type == H5TRAV_TYPE_LINK) + { + if(H5Lget_info(file1_id, obj1_name, &li1, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link info from \"%s\"\n",obj1_name); + goto out; + } + + softlinkinfo1.buf = (char*)HDcalloc(li1.u.val_size, sizeof(char)); + HDassert(softlinkinfo1.buf); + + /* get type and name of target object */ + if(H5tools_get_softlink_target_info(file1_id, obj1_name, li1, &softlinkinfo1)==0) + { + parallel_print("error: unable to get softlink info from \"%s\"\n",obj1_name); + goto out; + } + + /* set target name and type to pass diff() */ + obj1type = softlinkinfo1.type; + obj1name = softlinkinfo1.path; + } + + /*------------------------ + * if object2 is softlink + */ + if (obj2type == H5TRAV_TYPE_LINK) + { + if(H5Lget_info(file2_id, obj2_name, &li2, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link info from \"%s\"\n",obj2_name); + goto out; + } + + + softlinkinfo2.buf = (char*)HDcalloc(li2.u.val_size, sizeof(char)); + HDassert(softlinkinfo2.buf); + + /* get type and name of target object */ + if(H5tools_get_softlink_target_info(file2_id, obj2_name, li2, &softlinkinfo2)==0) + { + parallel_print("error: unable to get softlink info from \"%s\"\n",obj2_name); + goto out; + } + + /* set target name and type to pass diff() */ + obj2type = softlinkinfo2.type; + obj2name = softlinkinfo2.path; + } + + /*------------------------------------------------------------ + * External links + *------------------------------------------------------------*/ + + /*------------------------------- + * if object1 is external link + */ + if (obj1type == H5TRAV_TYPE_UDLINK) + { + if(H5Lget_info(file1_id, obj1_name, &li1, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link info from \"%s\"\n",obj1_name); + goto out; + } + + /* for external link */ + if(li1.type == H5L_TYPE_EXTERNAL) + { + extlinkinfo1.buf = (char*)HDcalloc(li1.u.val_size, sizeof(char)); + HDassert(extlinkinfo1.buf); + + /* get type and name of target object */ + if(H5tools_get_extlink_target_info(file1_id, obj1_name, li1, &extlinkinfo1)==0) + { + parallel_print("error: unable to get external link info from \"%s\"\n",obj1_name); + goto out; + } + + /* if valid actual object */ + if (extlinkinfo1.type < H5O_TYPE_GROUP || extlinkinfo1.type >= H5O_TYPE_NTYPES) + { + if (options->m_verbose) + { + parallel_print("<%s> is invaild type\n", obj1_name); + } + goto out; + } + + /* set target fileid, name and type to pass diff() */ + l_fileid1 = extlinkinfo1.extfile_id; + obj1name = extlinkinfo1.path; + obj1type = extlinkinfo1.type; + } + } + + /*------------------------------- + * if object2 is external link + */ + if (obj2type == H5TRAV_TYPE_UDLINK) + { + if(H5Lget_info(file2_id, obj2_name, &li2, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link info from \"%s\"\n",obj2_name); + goto out; + } + /* for external link */ + if(li2.type == H5L_TYPE_EXTERNAL) + { + extlinkinfo2.buf = (char*)HDcalloc(li2.u.val_size, sizeof(char)); + HDassert(extlinkinfo2.buf); + + /* get type and name of target object */ + if(H5tools_get_extlink_target_info(file2_id, obj2_name, li2, &extlinkinfo2)==0) + { + parallel_print("error: unable to get external link info from \"%s\"\n",obj2_name); + goto out; + } + /* if valid actual object */ + if (extlinkinfo2.type < H5O_TYPE_GROUP || extlinkinfo2.type >= H5O_TYPE_NTYPES) + { + if (options->m_verbose) + { + parallel_print("<%s> is invaild type\n", obj2_name); + } + goto out; + } + + /* set target fileid, name and type to pass diff() */ + l_fileid2 = extlinkinfo2.extfile_id; + obj2name = extlinkinfo2.path; + obj2type = extlinkinfo2.type; + } + } + } /* end of linkfollow */ + /* objects are not the same type */ - if (info1->paths[i].type != info2->paths[j].type) + if (obj1type != obj2type) { if (options->m_verbose||options->m_list_not_cmp) { parallel_print("<%s> is of type %s and <%s> is of type %s\n", - obj1_name, get_type(info1->paths[i].type), obj2_name, - get_type(info2->paths[j].type)); + obj1name, get_type(obj1type), obj2name, + get_type(obj2type)); } options->not_cmp=1; - return 0; + goto out; } - nfound = diff(file1_id, - obj1_name, - file2_id, - obj2_name, - options, - info1->paths[i].type); + nfound = diff(l_fileid1, obj1name, + l_fileid2, obj2name, + options, obj1type); + +out: + /* free soft link buffer */ + if (softlinkinfo1.buf) + HDfree(softlinkinfo1.buf); + if (softlinkinfo2.buf) + HDfree(softlinkinfo2.buf); + /* free external link buffer */ + if (extlinkinfo1.buf); + { + HDfree(extlinkinfo1.buf); + /* case for ext-link's target is soft-link */ + if(extlinkinfo1.is_path_malloced) + HDfree(extlinkinfo1.path); + } + if (extlinkinfo2.buf); + { + HDfree(extlinkinfo2.buf); + /* case for ext-link's target is soft-link */ + if(extlinkinfo2.is_path_malloced) + HDfree(extlinkinfo2.path); + } + + /* close external file */ + H5E_BEGIN_TRY + { + H5Fclose(extfile1_id); + H5Fclose(extfile2_id); + } H5E_END_TRY; return nfound; } @@ -909,6 +1367,17 @@ hsize_t diff(hid_t file1_id, int ret; hsize_t nfound = 0; + char *extlinkbuf1=NULL; + char *extlinkbuf2=NULL; + + /* used in soft link case (H5TRAV_TYPE_LINK) */ + h5tool_link_trg_info_t softlinkinfo1; + h5tool_link_trg_info_t softlinkinfo2; + /*init */ + HDmemset(&softlinkinfo1,0,sizeof(h5tool_link_trg_info_t)); + HDmemset(&softlinkinfo2,0,sizeof(h5tool_link_trg_info_t)); + + switch(type) { /*------------------------------------------------------------------------- @@ -1022,35 +1491,66 @@ hsize_t diff(hid_t file1_id, case H5TRAV_TYPE_LINK: { H5L_info_t li1, li2; - char *buf1, *buf2; if(H5Lget_info(file1_id, path1, &li1, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link info from \"%s\"\n", path1); goto out; + } if(H5Lget_info(file2_id, path2, &li2, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link info from \"%s\"\n", path2); goto out; + } - buf1 = HDmalloc(li1.u.val_size); - buf2 = HDmalloc(li2.u.val_size); + softlinkinfo1.buf = (char*)HDcalloc(li1.u.val_size, sizeof(char)); + HDassert(softlinkinfo1.buf); + softlinkinfo2.buf = (char*)HDcalloc(li2.u.val_size, sizeof(char)); + HDassert(softlinkinfo2.buf); - if(H5Lget_val(file1_id, path1, buf1, li1.u.val_size, H5P_DEFAULT) < 0) + if(H5tools_get_softlink_target_info(file1_id,path1,li1,&softlinkinfo1)==0) + { + parallel_print("error: unable to get softlink info from \"%s\"\n", path1); goto out; - if(H5Lget_val(file2_id, path2, buf2, li2.u.val_size, H5P_DEFAULT) < 0) + } + if(H5tools_get_softlink_target_info(file2_id,path2,li2,&softlinkinfo2)==0) + { + parallel_print("error: unable to get softlink info from \"%s\"\n", path2); goto out; + } - ret = HDstrcmp(buf1, buf2); + ret = HDstrcmp(softlinkinfo1.path, softlinkinfo2.path); - /* if "buf1" != "buf2" then the links are "different" */ + /* if the target link name is not same then the links are "different" */ nfound = (ret != 0) ? 1 : 0; if(print_objname(options, nfound)) do_print_objname("link", path1, path2); + if (options->linkfollow) + { + /* objects are not the same type */ + if (softlinkinfo1.type != softlinkinfo2.type) + { + if (options->m_verbose||options->m_list_not_cmp) + { + parallel_print("<%s> is of type %d and <%s> is of type %d\n", softlinkinfo1.path, softlinkinfo1.type, softlinkinfo2.path, softlinkinfo2.type); + } + options->not_cmp=1; + goto out; + } + + nfound += diff(file1_id, softlinkinfo1.path, + file2_id, softlinkinfo2.path, + options, softlinkinfo1.type); + } + /* always print the number of differences found in verbose mode */ if(options->m_verbose) print_found(nfound); - HDfree(buf1); - HDfree(buf2); + HDfree(softlinkinfo1.buf); + HDfree(softlinkinfo2.buf); } break; @@ -1063,45 +1563,80 @@ hsize_t diff(hid_t file1_id, H5L_info_t li1, li2; if(H5Lget_info(file1_id, path1, &li1, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get udlink info from \"%s\"\n", path1); goto out; + } if(H5Lget_info(file2_id, path2, &li2, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get udlink info from \"%s\"\n", path2); goto out; + } /* Only external links will have a query function registered */ - if(li1.type == H5L_TYPE_EXTERNAL && li2.type == H5L_TYPE_EXTERNAL) { - char *buf1, *buf2; + if(li1.type == H5L_TYPE_EXTERNAL && li2.type == H5L_TYPE_EXTERNAL) + { - buf1 = HDmalloc(li1.u.val_size); - buf2 = HDmalloc(li2.u.val_size); + extlinkbuf1 = (char*)HDcalloc(li1.u.val_size, sizeof(char)); + HDassert(extlinkbuf1); + extlinkbuf2 = (char*)HDcalloc(li2.u.val_size, sizeof(char)); + HDassert(extlinkbuf2); - if(H5Lget_val(file1_id, path1, buf1, li1.u.val_size, H5P_DEFAULT) < 0) { - HDfree(buf1); - HDfree(buf2); + if(H5Lget_val(file1_id, path1, extlinkbuf1, li1.u.val_size, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link value from \"%s\"\n",path1); goto out; } /* end if */ - if(H5Lget_val(file2_id, path2, buf2, li2.u.val_size, H5P_DEFAULT) < 0) { - HDfree(buf1); - HDfree(buf2); + if(H5Lget_val(file2_id, path2, extlinkbuf2, li2.u.val_size, H5P_DEFAULT) < 0) + { + parallel_print("error: unable to get link value from \"%s\"\n",path2); goto out; } /* end if */ /* If the buffers are the same size, compare them */ - if(li1.u.val_size == li2.u.val_size) { - ret = HDmemcmp(buf1, buf2, li1.u.val_size); + if(li1.u.val_size == li2.u.val_size) + { + ret = HDmemcmp(extlinkbuf1, extlinkbuf2, li1.u.val_size); } else ret = 1; - /* if "buf1" != "buf2" then the links are "different" */ + /* if "extlinkbuf1" != "extlinkbuf2" then the links are "different" */ nfound = (ret != 0) ? 1 : 0; if(print_objname(options, nfound)) do_print_objname("external link", path1, path2); - HDfree(buf1); - HDfree(buf2); + if (options->linkfollow) + { + const char *extlink_file1; + const char *extlink_path1; + const char *extlink_file2; + const char *extlink_path2; + + /* get file name and obj path */ + if(H5Lunpack_elink_val(extlinkbuf1, li1.u.val_size, NULL, &extlink_file1, &extlink_path1)<0) + { + parallel_print("error: unable to unpack external link value of obj1\n"); + goto out; + } + + /* get file name and obj path */ + if(H5Lunpack_elink_val(extlinkbuf2, li2.u.val_size, NULL, &extlink_file2, &extlink_path2)<0) + { + parallel_print("error: unable to unpack external link value of obj2\n"); + goto out; + } + + nfound = h5diff(extlink_file1, extlink_file2, + extlink_path1, extlink_path2, options); + } + + HDfree(extlinkbuf1); + HDfree(extlinkbuf2); } /* end if */ - else { + else + { /* If one or both of these links isn't an external link, we can only * compare information from H5Lget_info since we don't have a query * function registered for them. @@ -1137,6 +1672,18 @@ hsize_t diff(hid_t file1_id, out: options->err_stat = 1; + /* free buf used for softlink */ + if (softlinkinfo1.buf) + HDfree(softlinkinfo1.buf); + if (softlinkinfo2.buf) + HDfree(softlinkinfo2.buf); + + /* free buf used for softlink */ + if (extlinkbuf1) + HDfree(extlinkbuf1); + if (extlinkbuf2) + HDfree(extlinkbuf2); + /* close */ /* disable error reporting */ H5E_BEGIN_TRY { diff --git a/tools/lib/h5diff.h b/tools/lib/h5diff.h index df264dd..090d3d9 100644 --- a/tools/lib/h5diff.h +++ b/tools/lib/h5diff.h @@ -35,6 +35,7 @@ typedef struct { double percent; /* relative error value */ int n; /* count, compare up to count */ hsize_t count; /* count value */ + int linkfollow; /* link follow*/ int err_stat; /* an error ocurred (1, error, 0, no error) */ int cmn_objs; /* do we have common objects */ int not_cmp; /* are the objects comparable */ |