diff options
Diffstat (limited to 'src/H5L.c')
| -rw-r--r-- | src/H5L.c | 421 |
1 files changed, 318 insertions, 103 deletions
@@ -48,54 +48,67 @@ /* Local Typedefs */ /******************/ -/* User data for path traversal routine for getting link metadata */ +/* User data for path traversal routine for getting link info by name */ typedef struct { - H5L_info_t *linfo; /* Buffer to return to user */ - hid_t dxpl_id; /* dxpl to use in callback */ + H5L_info_t *linfo; /* Buffer to return to user */ + hid_t dxpl_id; /* dxpl to use in callback */ } H5L_trav_ud1_t; /* User data for path traversal callback to creating a link */ typedef struct { - H5F_t *file; /* Pointer to the file */ - hid_t dxpl_id; /* Dataset transfer property list */ - hid_t lcpl_id; /* Link creation property list */ - H5G_name_t *path; /* Path to object being linked */ - H5O_link_t *lnk; /* Pointer to link information to insert */ + H5F_t *file; /* Pointer to the file */ + hid_t dxpl_id; /* Dataset transfer property list */ + hid_t lcpl_id; /* Link creation property list */ + H5G_name_t *path; /* Path to object being linked */ + H5O_link_t *lnk; /* Pointer to link information to insert */ } H5L_trav_ud2_t; /* User data for path traversal routine for moving and renaming a link */ typedef struct { - const char *dst_name; /* Destination name for moving object */ - H5T_cset_t cset; /* Char set for new name */ - H5G_loc_t *dst_loc; /* Destination location for moving object */ - hbool_t copy; /* TRUE if this is a copy operation */ - hid_t lapl_id; /* lapl to use in callback */ - hid_t dxpl_id; /* dxpl to use in callback */ + const char *dst_name; /* Destination name for moving object */ + H5T_cset_t cset; /* Char set for new name */ + H5G_loc_t *dst_loc; /* Destination location for moving object */ + hbool_t copy; /* TRUE if this is a copy operation */ + hid_t lapl_id; /* lapl to use in callback */ + hid_t dxpl_id; /* dxpl to use in callback */ } H5L_trav_ud3_t; /* User data for path traversal routine for getting soft link value */ typedef struct { - size_t size; /* Size of user buffer */ - void *buf; /* User buffer */ + size_t size; /* Size of user buffer */ + void *buf; /* User buffer */ } H5L_trav_ud4_t; /* User data for path traversal routine for removing link (i.e. unlink) */ typedef struct { - hid_t dxpl_id; /* Dataset transfer property list */ + hid_t dxpl_id; /* Dataset transfer property list */ } H5L_trav_ud5_t; /* User data for path traversal routine for moving and renaming an object */ typedef struct { - H5F_t *file; /* Pointer to the file */ - H5O_link_t *lnk; /* Pointer to link information to insert */ - hbool_t copy; /* TRUE if this is a copy operation */ - hid_t dxpl_id; /* Dataset transfer property list */ + H5F_t *file; /* Pointer to the file */ + H5O_link_t *lnk; /* Pointer to link information to insert */ + hbool_t copy; /* TRUE if this is a copy operation */ + hid_t dxpl_id; /* Dataset transfer property list */ } H5L_trav_ud6_t; +/* User data for path traversal routine for getting link info by index */ +typedef struct { + /* In */ + H5L_index_t idx_type; /* Index to use */ + H5_iter_order_t order; /* Order to iterate in index */ + hsize_t n; /* Offset of link within index */ + hid_t dxpl_id; /* dxpl to use in callback */ + + /* Out */ + H5L_info_t *linfo; /* Buffer to return to user */ +} H5L_trav_ud7_t; + /********************/ /* Local Prototypes */ /********************/ +static int H5L_find_class_idx(H5L_type_t id); static herr_t H5L_link_cb(H5G_loc_t *grp_loc/*in*/, const char *name, const H5O_link_t *lnk, H5G_loc_t *obj_loc, void *_udata/*in,out*/, H5G_own_loc_t *own_loc/*out*/); @@ -117,7 +130,12 @@ static herr_t H5L_move_dest_cb(H5G_loc_t *grp_loc/*in*/, static herr_t H5L_get_info_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name, const H5O_link_t *lnk, H5G_loc_t UNUSED *obj_loc, void *_udata/*in,out*/, H5G_own_loc_t *own_loc/*out*/); -static int H5L_find_class_idx(H5L_type_t id); +static herr_t H5L_get_info_by_idx_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name, + const H5O_link_t *lnk, H5G_loc_t UNUSED *obj_loc, void *_udata/*in,out*/, + H5G_own_loc_t *own_loc/*out*/); +static herr_t H5L_get_info_by_idx(const H5G_loc_t *loc, const char *group_name, + H5L_index_t idx_type, H5_iter_order_t order, hsize_t n, + H5L_info_t *linkbuf/*out*/, hid_t lapl_id, hid_t dxpl_id); /*********************/ /* Package Variables */ @@ -669,6 +687,11 @@ H5Lget_info(hid_t loc_id, const char *name, H5L_info_t *linkbuf /*out*/, HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!name || !*name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified") + if(H5P_DEFAULT == lapl_id) + lapl_id = H5P_LINK_ACCESS_DEFAULT; + else + if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") /* Get the creation time */ if(H5L_get_info(&loc, name, linkbuf, lapl_id, H5AC_ind_dxpl_id) < 0) @@ -680,6 +703,54 @@ done: /*------------------------------------------------------------------------- + * Function: H5Lget_info_by_idx + * + * Purpose: Gets metadata for a link, according to the order within an + * index. + * + * Return: Success: Non-negative with information in LINKBUF + * Failure: Negative + * + * Programmer: Quincey Koziol + * Monday, November 6, 2006 + * + *------------------------------------------------------------------------- + */ +herr_t +H5Lget_info_by_idx(hid_t loc_id, const char *group_name, + H5L_index_t idx_type, H5_iter_order_t order, hsize_t n, + H5L_info_t *linkbuf /*out*/, hid_t lapl_id) +{ + H5G_loc_t loc; + herr_t ret_value = SUCCEED; + + FUNC_ENTER_API(H5Lget_info_by_idx, FAIL) + + /* Check arguments */ + if(H5G_loc(loc_id, &loc)) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") + if(!group_name || !*group_name) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name specified") + if(idx_type <= H5L_INDEX_UNKNOWN || idx_type >= H5L_INDEX_N) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") + if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") + if(H5P_DEFAULT == lapl_id) + lapl_id = H5P_LINK_ACCESS_DEFAULT; + else + if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") + + /* Get the creation time */ + if(H5L_get_info_by_idx(&loc, group_name, idx_type, order, n, linkbuf, lapl_id, H5AC_ind_dxpl_id) < 0) + HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "unable to get link info") + +done: + FUNC_LEAVE_API(ret_value) +} /* end H5Gget_info_by_idx() */ + + +/*------------------------------------------------------------------------- * Function: H5Lregister * * Purpose: Registers a class of user-defined links, or changes the @@ -716,9 +787,9 @@ H5Lregister(const H5L_class_t *cls) if(cls->version != H5L_LINK_CLASS_T_VERS) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid H5L_class_t version number") - if (cls->id < H5L_TYPE_UD_MIN || cls->id > H5L_TYPE_MAX) + if(cls->id < H5L_TYPE_UD_MIN || cls->id > H5L_TYPE_MAX) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid link identification number") - if (cls->trav_func == NULL) + if(cls->trav_func == NULL) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no traversal function specified") /* Do it */ @@ -748,7 +819,7 @@ done: herr_t H5Lunregister(H5L_type_t id) { - herr_t ret_value=SUCCEED; /* Return value */ + herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(H5Lunregister, FAIL) H5TRACE1("e","Ll",id); @@ -785,18 +856,18 @@ htri_t H5Lis_registered(H5L_type_t id) { size_t i; /* Local index variable */ - htri_t ret_value=FALSE; /* Return value */ + htri_t ret_value = FALSE; /* Return value */ FUNC_ENTER_API(H5Lis_registered, FAIL) /* Check args */ - if(id<0 || id>H5L_TYPE_MAX) + if(id < 0 || id > H5L_TYPE_MAX) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid link type id number") /* Is the link class already registered? */ - for(i=0; i<H5L_table_used_g; i++) - if(H5L_table_g[i].id==id) { - ret_value=TRUE; + for(i = 0; i < H5L_table_used_g; i++) + if(H5L_table_g[i].id == id) { + ret_value = TRUE; break; } /* end if */ @@ -832,12 +903,12 @@ static int H5L_find_class_idx(H5L_type_t id) { size_t i; /* Local index variable */ - int ret_value=FAIL; /* Return value */ + int ret_value = FAIL; /* Return value */ FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5L_find_class_idx) - for (i=0; i<H5L_table_used_g; i++) - if (H5L_table_g[i].id == id) + for(i = 0; i < H5L_table_used_g; i++) + if(H5L_table_g[i].id == id) HGOTO_DONE((int)i) done: @@ -863,16 +934,16 @@ const H5L_class_t * H5L_find_class(H5L_type_t id) { int idx; /* Filter index in global table */ - H5L_class_t *ret_value=NULL; /* Return value */ + H5L_class_t *ret_value = NULL; /* Return value */ FUNC_ENTER_NOAPI(H5L_find_class, NULL) /* Get the index in the global table */ - if((idx=H5L_find_class_idx(id))<0) + if((idx = H5L_find_class_idx(id)) < 0) HGOTO_ERROR(H5E_LINK, H5E_NOTREGISTERED, NULL, "unable to find link class") /* Set return value */ - ret_value=H5L_table_g+idx; + ret_value = H5L_table_g+idx; done: FUNC_LEAVE_NOAPI(ret_value) @@ -951,25 +1022,25 @@ done: herr_t H5L_unregister(H5L_type_t id) { - size_t i; /* Local index variable */ - herr_t ret_value=SUCCEED; /* Return value */ + size_t i; /* Local index variable */ + herr_t ret_value = SUCCEED; /* Return value */ - FUNC_ENTER_NOAPI(H5L_unregister,FAIL) + FUNC_ENTER_NOAPI(H5L_unregister, FAIL) - assert (id>=0 && id<=H5L_TYPE_MAX); + HDassert(id >= 0 && id <= H5L_TYPE_MAX); /* Is the filter already registered? */ - for (i=0; i<H5L_table_used_g; i++) - if (H5L_table_g[i].id==id) + for(i = 0; i < H5L_table_used_g; i++) + if(H5L_table_g[i].id == id) break; /* Fail if filter not found */ - if (i>=H5L_table_used_g) + if(i >= H5L_table_used_g) HGOTO_ERROR(H5E_LINK, H5E_NOTREGISTERED, FAIL, "link class is not registered") /* Remove filter from table */ /* Don't worry about shrinking table size (for now) */ - HDmemmove(&H5L_table_g[i],&H5L_table_g[i+1],sizeof(H5L_class_t)*((H5L_table_used_g-1)-i)); + HDmemmove(&H5L_table_g[i], &H5L_table_g[i + 1], sizeof(H5L_class_t) * ((H5L_table_used_g - 1) - i)); H5L_table_used_g--; done: @@ -1014,7 +1085,7 @@ H5L_link(H5G_loc_t *new_loc, const char *new_name, H5G_loc_t *obj_loc, lnk.u.hard.addr = obj_loc->oloc->addr; /* Create the link */ - if( H5L_create_real(new_loc, new_name, obj_loc->path, obj_loc->oloc->file, &lnk, lcpl_id, lapl_id, dxpl_id) <0) + if(H5L_create_real(new_loc, new_name, obj_loc->path, obj_loc->oloc->file, &lnk, lcpl_id, lapl_id, dxpl_id) < 0) HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create new link to object") done: @@ -1113,12 +1184,12 @@ done: /* Close the location given to the user callback if it was created */ if(grp_id >= 0) { - if(H5I_dec_ref(grp_id) <0) + if(H5I_dec_ref(grp_id) < 0) HDONE_ERROR(H5E_ATOM, H5E_CANTRELEASE, FAIL, "unable to close atom from UD callback") } else if(grp != NULL) { - if(H5G_close(grp) <0) + if(H5G_close(grp) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "unable to close group given to UD callback") } else if(temp_loc_init) @@ -1288,16 +1359,14 @@ H5L_create_hard(H5G_loc_t *cur_loc, const char *cur_name, /* Create actual link to the object. Pass in NULL for the path, since this * function shouldn't change an object's user path. */ - if(H5L_create_real(link_loc, link_name, NULL, link_file, &lnk, lcpl_id, - lapl_id, dxpl_id) < 0) + if(H5L_create_real(link_loc, link_name, NULL, link_file, &lnk, lcpl_id, lapl_id, dxpl_id) < 0) HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create new link to object") done: /* Free the object header location */ - if(loc_valid) { + if(loc_valid) if(H5G_loc_free(&obj_loc) < 0) HDONE_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "unable to free location") - } /* Free the normalized path name */ if(norm_cur_name) @@ -1343,8 +1412,7 @@ H5L_create_soft(const char *target_path, H5G_loc_t *link_loc, lnk.u.soft.name = norm_target; /* Create actual link to the object */ - if(H5L_create_real(link_loc, link_name, NULL, NULL, &lnk, lcpl_id, - lapl_id, dxpl_id) < 0) + if(H5L_create_real(link_loc, link_name, NULL, NULL, &lnk, lcpl_id, lapl_id, dxpl_id) < 0) HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create new link to object") done: @@ -1405,8 +1473,7 @@ H5L_create_ud(H5G_loc_t *link_loc, const char *link_name, const void * ud_data, lnk.type = type; /* Create actual link to the object */ - if(H5L_create_real(link_loc, link_name, NULL, NULL, &lnk, lcpl_id, - lapl_id, dxpl_id) < 0) + if(H5L_create_real(link_loc, link_name, NULL, NULL, &lnk, lcpl_id, lapl_id, dxpl_id) < 0) HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to register new name for object") done: @@ -1736,25 +1803,25 @@ H5L_move_dest_cb(H5G_loc_t *grp_loc/*in*/, const char *name, { if((link_class->copy_func)(udata->lnk->name, grp_id, udata->lnk->u.ud.udata, udata->lnk->u.ud.size) < 0) HGOTO_ERROR(H5E_LINK, H5E_CALLBACK, FAIL, "UD copy callback returned error") - } + } /* end if */ else { if((link_class->move_func)(udata->lnk->name, grp_id, udata->lnk->u.ud.udata, udata->lnk->u.ud.size) < 0) HGOTO_ERROR(H5E_LINK, H5E_CALLBACK, FAIL, "UD move callback returned error") - } - } - } + } /* end else */ + } /* end if */ + } /* end if */ done: /* Close the location given to the user callback if it was created */ if(grp_id >= 0) { - if(H5I_dec_ref(grp_id) <0) + if(H5I_dec_ref(grp_id) < 0) HDONE_ERROR(H5E_ATOM, H5E_CANTRELEASE, FAIL, "unable to close atom from UD callback") } else if(grp != NULL) { - if(H5G_close(grp) <0) + if(H5G_close(grp) < 0) HDONE_ERROR(H5E_FILE, H5E_CANTRELEASE, FAIL, "unable to close group given to UD callback") } else if(temp_loc_init) @@ -1809,7 +1876,7 @@ H5L_move_cb(H5G_loc_t *grp_loc/*in*/, const char *name, const H5O_link_t *lnk, /* Get object type */ switch(lnk->type) { case H5L_TYPE_HARD: - if(H5G_UNKNOWN == (type = H5O_obj_type(obj_loc->oloc, udata->dxpl_id))) + if(H5G_UNKNOWN == (type = H5O_obj_type(obj_loc->oloc, udata->dxpl_id))) HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "unable to get object type to move") break; @@ -1826,6 +1893,7 @@ H5L_move_cb(H5G_loc_t *grp_loc/*in*/, const char *name, const H5O_link_t *lnk, /* Set up user data for move_dest_cb */ if((udata_out.lnk = H5O_copy(H5O_LINK_ID, lnk, NULL)) == NULL) HGOTO_ERROR(H5E_LINK, H5E_CANTCOPY, FAIL, "unable to copy link to be moved") + /* In this special case, the link's name is going to be replaced at its * destination, so we should free it here. */ @@ -1857,10 +1925,10 @@ H5L_move_cb(H5G_loc_t *grp_loc/*in*/, const char *name, const H5O_link_t *lnk, if(H5G_obj_remove(grp_loc->oloc, orig_name, &type, udata->dxpl_id) < 0) HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "unable to remove old name") H5RS_decr(dst_name_r); - } + } /* end if */ done: - /* Cleanup */ + /* Cleanup */ if(orig_name) H5MM_xfree(orig_name); @@ -1875,7 +1943,7 @@ done: else if(udata_out.lnk->type >= H5L_TYPE_UD_MIN && udata_out.lnk->u.ud.size > 0) udata_out.lnk->u.ud.udata = H5MM_xfree(udata_out.lnk->u.ud.udata); H5MM_xfree(udata_out.lnk); - } + } /* end if */ /* Indicate that this callback didn't take ownership of the group * * location for the object */ @@ -1988,14 +2056,13 @@ done: *------------------------------------------------------------------------- */ static herr_t -H5L_get_info_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name, const H5O_link_t *lnk, - H5G_loc_t UNUSED *obj_loc, void *_udata/*in,out*/, H5G_own_loc_t *own_loc/*out*/) +H5L_get_info_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name, + const H5O_link_t *lnk, H5G_loc_t UNUSED *obj_loc, void *_udata/*in,out*/, + H5G_own_loc_t *own_loc/*out*/) { H5L_trav_ud1_t *udata = (H5L_trav_ud1_t *)_udata; /* User data passed in */ H5L_info_t *linfo = udata->linfo; - const H5L_class_t *link_class; /* User-defined link class */ - ssize_t cb_ret; /* Return value from UD callback */ - herr_t ret_value = SUCCEED; /* Return value */ + herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT(H5L_get_info_cb) @@ -2013,34 +2080,39 @@ H5L_get_info_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name, const switch(lnk->type) { - case H5L_TYPE_HARD: - linfo->u.address = lnk->u.hard.addr; - break; - - case H5L_TYPE_SOFT: - linfo->u.link_size = HDstrlen(lnk->u.soft.name) + 1; /*count the null terminator*/ - break; - - default: - if(lnk->type < H5L_TYPE_UD_MIN || lnk->type > H5L_TYPE_MAX) - HGOTO_ERROR(H5E_LINK, H5E_BADTYPE, FAIL, "unknown link class") - - /* User-defined link; call its query function to get the link udata size. */ - /* Get the link class for this type of link. It's okay if the class - * isn't registered, though--we just can't give any more information - * about it - */ - link_class = H5L_find_class(lnk->type); - - if(link_class != NULL && link_class->query_func != NULL) { - if((cb_ret = (link_class->query_func)(lnk->name, lnk->u.ud.udata, lnk->u.ud.size, NULL, (size_t)0)) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CALLBACK, FAIL, "query buffer size callback returned failure") - - linfo->u.link_size = cb_ret; - } - else { - linfo->u.link_size = 0; - } + case H5L_TYPE_HARD: + linfo->u.address = lnk->u.hard.addr; + break; + + case H5L_TYPE_SOFT: + linfo->u.link_size = HDstrlen(lnk->u.soft.name) + 1; /*count the null terminator*/ + break; + + default: + { + const H5L_class_t *link_class; /* User-defined link class */ + + if(lnk->type < H5L_TYPE_UD_MIN || lnk->type > H5L_TYPE_MAX) + HGOTO_ERROR(H5E_LINK, H5E_BADTYPE, FAIL, "unknown link class") + + /* User-defined link; call its query function to get the link udata size. */ + /* Get the link class for this type of link. It's okay if the class + * isn't registered, though--we just can't give any more information + * about it + */ + link_class = H5L_find_class(lnk->type); + + if(link_class != NULL && link_class->query_func != NULL) { + ssize_t cb_ret; /* Return value from UD callback */ + + if((cb_ret = (link_class->query_func)(lnk->name, lnk->u.ud.udata, lnk->u.ud.size, NULL, (size_t)0)) < 0) + HGOTO_ERROR(H5E_LINK, H5E_CALLBACK, FAIL, "query buffer size callback returned failure") + + linfo->u.link_size = cb_ret; + } /* end if */ + else + linfo->u.link_size = 0; + } /* end case */ } /* end switch */ } /* end if */ @@ -2066,12 +2138,13 @@ done: *------------------------------------------------------------------------- */ herr_t -H5L_get_info(const H5G_loc_t *loc, const char *name, H5L_info_t *linkbuf/*out*/, hid_t lapl_id, hid_t dxpl_id) +H5L_get_info(const H5G_loc_t *loc, const char *name, + H5L_info_t *linkbuf/*out*/, hid_t lapl_id, hid_t dxpl_id) { - H5L_trav_ud1_t udata; - herr_t ret_value = SUCCEED; /* Return value */ + H5L_trav_ud1_t udata; /* User data for callback */ + herr_t ret_value = SUCCEED; /* Return value */ - FUNC_ENTER_NOAPI_NOINIT(H5L_get_info) + FUNC_ENTER_NOAPI(H5L_get_info, FAIL) udata.linfo = linkbuf; udata.dxpl_id = dxpl_id; @@ -2086,6 +2159,148 @@ done: /*------------------------------------------------------------------------- + * Function: H5L_get_info_by_idx_cb + * + * Purpose: Callback for retrieving a link's metadata according to an + * index's order. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * Monday, November 6 2006 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5L_get_info_by_idx_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name, + const H5O_link_t UNUSED *lnk, H5G_loc_t *obj_loc, void *_udata/*in,out*/, + H5G_own_loc_t *own_loc/*out*/) +{ + H5L_trav_ud7_t *udata = (H5L_trav_ud7_t *)_udata; /* User data passed in */ + H5O_link_t grp_lnk; /* Link within group */ + H5L_info_t *linfo = udata->linfo; + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI_NOINIT(H5L_get_info_by_idx_cb) + +#ifdef QAK +HDfprintf(stderr, "%s: grp_loc = %p\n", FUNC, grp_loc); +HDfprintf(stderr, "%s: name = %p\n", FUNC, name); +if(name) + HDfprintf(stderr, "%s: name = '%s'\n", FUNC, name); +HDfprintf(stderr, "%s: lnk = %p\n", FUNC, lnk); +if(lnk && lnk->name) + HDfprintf(stderr, "%s: lnk->name = '%s'\n", FUNC, lnk->name); +HDfprintf(stderr, "%s: obj_loc = %p\n", FUNC, obj_loc); +if(obj_loc) { + HDfprintf(stderr, "%s: obj_loc->oloc = %p\n", FUNC, obj_loc->oloc); + if(obj_loc->oloc) + HDfprintf(stderr, "%s: obj_loc->oloc->addr = %a\n", FUNC, obj_loc->oloc->addr); +} /* end if */ +#endif /* QAK */ + + /* Check if the name of the group resolved to a valid object */ + if(obj_loc == NULL) + HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "group doesn't exist") + + /* Query link */ + if(H5G_obj_lookup_by_idx(obj_loc->oloc, udata->idx_type, udata->order, + udata->n, &grp_lnk, udata->dxpl_id) < 0) + HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "link not found") + + /* Get information from the link */ + if(linfo) { + linfo->cset = grp_lnk.cset; + linfo->corder = grp_lnk.corder; + linfo->corder_valid = grp_lnk.corder_valid; + linfo->type = grp_lnk.type; + + switch(grp_lnk.type) { + case H5L_TYPE_HARD: + linfo->u.address = grp_lnk.u.hard.addr; + break; + + case H5L_TYPE_SOFT: + linfo->u.link_size = HDstrlen(grp_lnk.u.soft.name) + 1; /*count the null terminator*/ + break; + + default: + { + const H5L_class_t *link_class; /* User-defined link class */ + + if(grp_lnk.type < H5L_TYPE_UD_MIN || grp_lnk.type > H5L_TYPE_MAX) + HGOTO_ERROR(H5E_LINK, H5E_BADTYPE, FAIL, "unknown link class") + + /* User-defined link; call its query function to get the link udata size. */ + /* Get the link class for this type of link. It's okay if the class + * isn't registered, though--we just can't give any more information + * about it + */ + link_class = H5L_find_class(grp_lnk.type); + + if(link_class != NULL && link_class->query_func != NULL) { + ssize_t cb_ret; /* Return value from UD callback */ + + if((cb_ret = (link_class->query_func)(grp_lnk.name, grp_lnk.u.ud.udata, grp_lnk.u.ud.size, NULL, (size_t)0)) < 0) + HGOTO_ERROR(H5E_LINK, H5E_CALLBACK, FAIL, "query buffer size callback returned failure") + + linfo->u.link_size = cb_ret; + } /* end if */ + else + linfo->u.link_size = 0; + } /* end case */ + } /* end switch */ + } /* end if */ + +done: + /* Indicate that this callback didn't take ownership of the group * + * location for the object */ + *own_loc = H5G_OWN_NONE; + + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5L_get_info_by_idx_cb() */ + + +/*------------------------------------------------------------------------- + * Function: H5L_get_info_by_idx + * + * Purpose: Returns metadata about a link, according to an order within + * an index. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Quincey Koziol + * Monday, November 6 2006 + * + *------------------------------------------------------------------------- + */ +static herr_t +H5L_get_info_by_idx(const H5G_loc_t *loc, const char *group_name, + H5L_index_t idx_type, H5_iter_order_t order, hsize_t n, + H5L_info_t *linkbuf/*out*/, hid_t lapl_id, hid_t dxpl_id) +{ + H5L_trav_ud7_t udata; /* User data for callback */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI_NOINIT(H5L_get_info_by_idx) + + /* Set up user data for callback */ + udata.idx_type = idx_type; + udata.order = order; + udata.n = n; + udata.dxpl_id = dxpl_id; + udata.linfo = linkbuf; + + /* Traverse the group hierarchy to locate the object to get info about */ + if(H5G_traverse(loc, group_name, H5G_TARGET_SLINK|H5G_TARGET_UDLINK, H5L_get_info_by_idx_cb, &udata, lapl_id, dxpl_id) < 0) + HGOTO_ERROR(H5E_SYM, H5E_EXISTS, FAIL, "name doesn't exist") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* H5L_get_info_by_idx() */ + + +/*------------------------------------------------------------------------- * Function: H5L_get_default_lcpl * * Purpose: Accessor for the default Link Creation Property List @@ -2102,7 +2317,7 @@ done: hid_t H5L_get_default_lcpl(void) { - hid_t ret_value = FAIL; /* Return value */ + hid_t ret_value; /* Return value */ FUNC_ENTER_NOAPI(H5L_get_default_lcpl, FAIL) |