diff options
Diffstat (limited to 'src/H5L.c')
| -rw-r--r-- | src/H5L.c | 2176 |
1 files changed, 6 insertions, 2170 deletions
@@ -21,17 +21,13 @@ /* Headers */ /***********/ #include "H5private.h" /* Generic Functions */ -#include "H5ACprivate.h" /* Metadata cache */ #include "H5CXprivate.h" /* API Contexts */ -#include "H5Dprivate.h" /* Datasets */ #include "H5Eprivate.h" /* Error handling */ #include "H5ESprivate.h" /* Event Sets */ -#include "H5Fprivate.h" /* File access */ #include "H5Gprivate.h" /* Groups */ #include "H5Iprivate.h" /* IDs */ #include "H5Lpkg.h" /* Links */ #include "H5MMprivate.h" /* Memory management */ -#include "H5Oprivate.h" /* File objects */ #include "H5Pprivate.h" /* Property lists */ #include "H5VLprivate.h" /* Virtual Object Layer */ #include "H5VLnative_private.h" /* Native VOL */ @@ -40,96 +36,14 @@ /* Local Macros */ /****************/ -#define H5L_MIN_TABLE_SIZE 32 /* Minimum size of the user-defined link type table if it is allocated */ - /******************/ /* Local Typedefs */ /******************/ -/* User data for path traversal routine for getting link info by name */ -typedef struct { - H5L_info2_t *linfo; /* Buffer to return to user */ -} H5L_trav_gi_t; - -/* User data for path traversal callback to creating a link */ -typedef struct { - H5F_t * file; /* Pointer to the file */ - H5P_genplist_t * lc_plist; /* Link creation property list */ - H5G_name_t * path; /* Path to object being linked */ - H5O_obj_create_t *ocrt_info; /* Pointer to object creation info */ - H5O_link_t * lnk; /* Pointer to link information to insert */ -} H5L_trav_cr_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 */ - const H5G_loc_t *dst_loc; /* Destination location for moving object */ - unsigned dst_target_flags; /* Target flags for destination object */ - hbool_t copy; /* TRUE if this is a copy operation */ - size_t orig_nlinks; /* The original value for the # of soft / UD links that can be traversed */ -} H5L_trav_mv_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 */ -} H5L_trav_mv2_t; - -/* User data for path traversal routine for checking if a link exists */ -typedef struct { - /* Down */ - char *sep; /* Pointer to next separator in the string */ - - /* Up */ - hbool_t *exists; /* Whether the link exists or not */ -} H5L_trav_le_t; - -/* User data for path traversal routine for getting link value */ -typedef struct { - size_t size; /* Size of user buffer */ - void * buf; /* User buffer */ -} H5L_trav_gv_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*/); -static herr_t H5L__create_real(const H5G_loc_t *link_loc, const char *link_name, H5G_name_t *obj_path, - H5F_t *obj_file, H5O_link_t *lnk, H5O_obj_create_t *ocrt_info, hid_t lcpl_id); -static herr_t H5L__get_val_real(const H5O_link_t *lnk, void *buf, size_t size); -static herr_t H5L__get_val_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*/); -static herr_t H5L__get_val_by_idx_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*/); -static herr_t H5L__delete_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*/); -static herr_t H5L__delete_by_idx_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*/); -static herr_t H5L__move_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*/); -static herr_t H5L__move_dest_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*/); -static herr_t H5L__exists_final_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*/); -static herr_t H5L__exists_inter_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*/); -static herr_t H5L__get_info_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*/); -static herr_t H5L__get_info_by_idx_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*/); -static herr_t H5L__get_name_by_idx_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*/); static herr_t H5L__create_soft_api_common(const char *link_target, hid_t link_loc_id, const char *link_name, hid_t lcpl_id, hid_t lapl_id, void **token_ptr, H5VL_object_t **_vol_obj_ptr); @@ -151,9 +65,6 @@ static herr_t H5L__iterate_api_common(hid_t group_id, H5_index_t idx_type, H5_it /* Package Variables */ /*********************/ -/* Package initialization variable */ -hbool_t H5_PKG_INIT_VAR = FALSE; - /*****************************/ /* Library Private Variables */ /*****************************/ @@ -162,99 +73,6 @@ hbool_t H5_PKG_INIT_VAR = FALSE; /* Local Variables */ /*******************/ -/* Information about user-defined links */ -static size_t H5L_table_alloc_g = 0; -static size_t H5L_table_used_g = 0; -static H5L_class_t *H5L_table_g = NULL; - -/*------------------------------------------------------------------------- - * Function: H5L_init - * - * Purpose: Initialize the interface from some other package. - * - * Return: Success: non-negative - * - * Failure: negative - * - * Programmer: James Laird - * Thursday, July 13, 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L_init(void) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - /* FUNC_ENTER() does all the work */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L_init() */ - -/*------------------------------------------------------------------------- - * Function: H5L__init_package - * - * Purpose: Initialize information specific to H5L interface. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: James Laird - * Tuesday, January 24, 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__init_package(void) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Initialize user-defined link classes */ - if (H5L_register_external() < 0) - HGOTO_ERROR(H5E_LINK, H5E_NOTREGISTERED, FAIL, "unable to register external link class") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L_init_package() */ - -/*------------------------------------------------------------------------- - * Function: H5L_term_package - * - * Purpose: Terminate any resources allocated in H5L__init_package. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: James Laird - * Tuesday, January 24, 2006 - * - *------------------------------------------------------------------------- - */ -int -H5L_term_package(void) -{ - int n = 0; - - FUNC_ENTER_NOAPI_NOINIT_NOERR - - if (H5_PKG_INIT_VAR) { - /* Free the table of link types */ - if (H5L_table_g) { - H5L_table_g = (H5L_class_t *)H5MM_xfree(H5L_table_g); - H5L_table_used_g = H5L_table_alloc_g = 0; - n++; - } /* end if */ - - /* Mark the interface as uninitialized */ - if (0 == n) - H5_PKG_INIT_VAR = FALSE; - } /* end if */ - - FUNC_LEAVE_NOAPI(n) -} /* H5L_term_package() */ - /*------------------------------------------------------------------------- * Function: H5Lmove * @@ -1603,8 +1421,8 @@ done: htri_t H5Lis_registered(H5L_type_t id) { - size_t i; /* Local index variable */ - htri_t ret_value = FALSE; /* Return value */ + hbool_t is_registered = FALSE; + htri_t ret_value = FALSE; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE1("t", "Ll", id); @@ -1614,11 +1432,10 @@ H5Lis_registered(H5L_type_t id) 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; - break; - } /* end if */ + if (H5L_is_registered(id, &is_registered) < 0) + HGOTO_ERROR(H5E_LINK, H5E_BADTYPE, FAIL, "could not determine registration status of UD link type") + + ret_value = is_registered ? TRUE : FALSE; done: FUNC_LEAVE_API(ret_value) @@ -2110,1984 +1927,3 @@ H5Lunpack_elink_val(const void *_ext_linkval, size_t link_size, unsigned *flags, done: FUNC_LEAVE_API(ret_value) } /* end H5Lunpack_elink_val() */ - -/* - *------------------------------------------------------------------------- - *------------------------------------------------------------------------- - * N O A P I F U N C T I O N S B E Y O N D T H I S P O I N T - *------------------------------------------------------------------------- - *------------------------------------------------------------------------- - */ - -/*------------------------------------------------------------------------- - * Function: H5L__find_class_idx - * - * Purpose: Given a link class ID, return the offset in the global array - * that holds all the registered link classes. - * - * Return: Success: Non-negative index of entry in global - * link class table. - * Failure: Negative - * - * Programmer: James Laird - * Monday, July 10, 2006 - * - *------------------------------------------------------------------------- - */ -static int -H5L__find_class_idx(H5L_type_t id) -{ - size_t i; /* Local index variable */ - int ret_value = FAIL; /* Return value */ - - FUNC_ENTER_STATIC_NOERR - - for (i = 0; i < H5L_table_used_g; i++) - if (H5L_table_g[i].id == id) - HGOTO_DONE((int)i) - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__find_class_idx */ - -/*------------------------------------------------------------------------- - * Function: H5L_find_class - * - * Purpose: Given a link class ID return a pointer to a global struct that - * defines the link class. - * - * Return: Success: Ptr to entry in global link class table. - * Failure: NULL - * - * Programmer: James Laird - * Monday, July 10, 2006 - * - *------------------------------------------------------------------------- - */ -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 */ - - FUNC_ENTER_NOAPI(NULL) - - /* Get the index in the global table */ - 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; - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L_find_class */ - -/*------------------------------------------------------------------------- - * Function: H5L_register - * - * Purpose: Registers a class of user-defined links, or changes the - * behavior of an existing class. - * - * See H5Lregister for full documentation. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: James Laird - * Monday, July 10, 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L_register(const H5L_class_t *cls) -{ - size_t i; /* Local index variable */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - HDassert(cls); - HDassert(cls->id >= 0 && cls->id <= H5L_TYPE_MAX); - - /* Is the link type already registered? */ - for (i = 0; i < H5L_table_used_g; i++) - if (H5L_table_g[i].id == cls->id) - break; - - /* Filter not already registered */ - if (i >= H5L_table_used_g) { - if (H5L_table_used_g >= H5L_table_alloc_g) { - size_t n = MAX(H5L_MIN_TABLE_SIZE, (2 * H5L_table_alloc_g)); - H5L_class_t *table = (H5L_class_t *)H5MM_realloc(H5L_table_g, (n * sizeof(H5L_class_t))); - if (!table) - HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to extend link type table") - H5L_table_g = table; - H5L_table_alloc_g = n; - } /* end if */ - - /* Initialize */ - i = H5L_table_used_g++; - } /* end if */ - - /* Copy link class info into table */ - H5MM_memcpy(H5L_table_g + i, cls, sizeof(H5L_class_t)); - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L_register */ - -/*------------------------------------------------------------------------- - * Function: H5L_unregister - * - * Purpose: Unregisters a class of user-defined links. - * - * See H5Lunregister for full documentation. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: James Laird - * Monday, July 10, 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L_unregister(H5L_type_t id) -{ - size_t i; /* Local index variable */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - 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) - break; - - /* Fail if filter not found */ - 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)); - H5L_table_used_g--; - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L_unregister() */ - -/*------------------------------------------------------------------------- - * Function: H5L_link - * - * Purpose: Creates a link from OBJ_ID to CUR_NAME. See H5Olink() for - * full documentation. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: James Laird - * Tuesday, December 13, 2005 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L_link(const H5G_loc_t *new_loc, const char *new_name, H5G_loc_t *obj_loc, hid_t lcpl_id) -{ - H5O_link_t lnk; /* Link to insert */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI_NOINIT - - /* Check args */ - HDassert(new_loc); - HDassert(obj_loc); - HDassert(new_name && *new_name); - - /* The link callback will check that the object isn't being hard linked - * into a different file, so we don't need to do it here (there could be - * external links along the path). - */ - - /* Construct link information for eventual insertion */ - lnk.type = H5L_TYPE_HARD; - 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, NULL, lcpl_id) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create new link to object") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L_link() */ - -/*------------------------------------------------------------------------- - * Function: H5L_link_object - * - * Purpose: Creates a new object and a link to it. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Monday, April 9, 2007 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L_link_object(const H5G_loc_t *new_loc, const char *new_name, H5O_obj_create_t *ocrt_info, hid_t lcpl_id) -{ - H5O_link_t lnk; /* Link to insert */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI_NOINIT - - /* Check args */ - HDassert(new_loc); - HDassert(new_name && *new_name); - HDassert(ocrt_info); - - /* The link callback will check that the object isn't being hard linked - * into a different file, so we don't need to do it here (there could be - * external links along the path). - */ - - /* Construct link information for eventual insertion */ - lnk.type = H5L_TYPE_HARD; - - /* Create the link */ - if (H5L__create_real(new_loc, new_name, NULL, NULL, &lnk, ocrt_info, lcpl_id) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create new link to object") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L_link_object() */ - -/*------------------------------------------------------------------------- - * Function: H5L__link_cb - * - * Purpose: Callback for creating a link to an object. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Monday, September 19, 2005 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__link_cb(H5G_loc_t *grp_loc /*in*/, const char *name, const H5O_link_t H5_ATTR_UNUSED *lnk, - H5G_loc_t *obj_loc, void *_udata /*in,out*/, H5G_own_loc_t *own_loc /*out*/) -{ - H5L_trav_cr_t *udata = (H5L_trav_cr_t *)_udata; /* User data passed in */ - H5G_t * grp = NULL; /* H5G_t for this group, opened to pass to user callback */ - hid_t grp_id = FAIL; /* Id for this group (passed to user callback */ - H5G_loc_t temp_loc; /* For UD callback */ - hbool_t temp_loc_init = FALSE; /* Temporary location for UD callback (temp_loc) has been initialized */ - hbool_t obj_created = FALSE; /* Whether an object was created (through a hard link) */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Check if the name in this group resolved to a valid location */ - /* (which is not what we want) */ - if (obj_loc != NULL) - HGOTO_ERROR(H5E_LINK, H5E_EXISTS, FAIL, "name already exists") - - /* Check for crossing file boundaries with a new hard link */ - if (udata->lnk->type == H5L_TYPE_HARD) { - /* Check for creating an object */ - /* (only for hard links) */ - if (udata->ocrt_info) { - H5G_loc_t new_loc; /* Group location for new object */ - - /* Create new object at this location */ - if (NULL == - (udata->ocrt_info->new_obj = H5O_obj_create(grp_loc->oloc->file, udata->ocrt_info->obj_type, - udata->ocrt_info->crt_info, &new_loc))) - HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create object") - - /* Set address for hard link */ - udata->lnk->u.hard.addr = new_loc.oloc->addr; - - /* Set object path to use for setting object name (below) */ - udata->path = new_loc.path; - - /* Indicate that an object was created */ - obj_created = TRUE; - } /* end if */ - else { - /* Check that both objects are in same file */ - if (!H5F_SAME_SHARED(grp_loc->oloc->file, udata->file)) - HGOTO_ERROR(H5E_LINK, H5E_BADVALUE, FAIL, "interfile hard links are not allowed") - } /* end else */ - } /* end if */ - - /* Set 'standard' aspects of link */ - udata->lnk->corder = - 0; /* Will be re-written during group insertion, if the group is tracking creation order */ - udata->lnk->corder_valid = FALSE; /* Creation order not valid (yet) */ - - /* Check for non-default link creation properties */ - if (udata->lc_plist) { - /* Get character encoding property */ - if (H5CX_get_encoding(&udata->lnk->cset) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't get 'character set' property") - } /* end if */ - else - udata->lnk->cset = H5F_DEFAULT_CSET; /* Default character encoding for link */ - - /* Set the link's name correctly */ - /* Casting away const OK -QAK */ - udata->lnk->name = (char *)name; - - /* Insert link into group */ - if (H5G_obj_insert(grp_loc->oloc, name, udata->lnk, TRUE, - udata->ocrt_info ? udata->ocrt_info->obj_type : H5O_TYPE_UNKNOWN, - udata->ocrt_info ? udata->ocrt_info->crt_info : NULL) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create new link for object") - - /* Set object's path if it has been passed in and is not set */ - if (udata->path != NULL && udata->path->user_path_r == NULL) - if (H5G_name_set(grp_loc->path, udata->path, name) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "cannot set name") - - /* If link is a user-defined link, trigger its creation callback if it has one */ - if (udata->lnk->type >= H5L_TYPE_UD_MIN) { - const H5L_class_t *link_class; /* User-defined link class */ - - /* Get the link class for this type of link. */ - if (NULL == (link_class = H5L_find_class(udata->lnk->type))) - HGOTO_ERROR(H5E_LINK, H5E_NOTREGISTERED, FAIL, "unable to get class of UD link") - - if (link_class->create_func != NULL) { - H5O_loc_t temp_oloc; - H5G_name_t temp_path; - - /* Create a temporary location (or else H5G_open will do a shallow - * copy and wipe out grp_loc) - */ - H5G_name_reset(&temp_path); - if (H5O_loc_copy_deep(&temp_oloc, grp_loc->oloc) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTCOPY, FAIL, "unable to copy object location") - - temp_loc.oloc = &temp_oloc; - temp_loc.path = &temp_path; - temp_loc_init = TRUE; - - /* Set up location for user-defined callback */ - if (NULL == (grp = H5G_open(&temp_loc))) - HGOTO_ERROR(H5E_LINK, H5E_CANTOPENOBJ, FAIL, "unable to open group") - if ((grp_id = H5VL_wrap_register(H5I_GROUP, grp, TRUE)) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTREGISTER, FAIL, "unable to register ID for group") - - /* Make callback */ - if ((link_class->create_func)(name, grp_id, udata->lnk->u.ud.udata, udata->lnk->u.ud.size, - H5P_DEFAULT) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CALLBACK, FAIL, "link creation callback failed") - } /* end if */ - } /* end if */ - -done: - /* Check if an object was created */ - if (obj_created) { - H5O_loc_t oloc; /* Object location for created object */ - - /* Set up object location */ - HDmemset(&oloc, 0, sizeof(oloc)); - oloc.file = grp_loc->oloc->file; - oloc.addr = udata->lnk->u.hard.addr; - - /* Decrement refcount on new object's object header in memory */ - if (H5O_dec_rc_by_loc(&oloc) < 0) - HDONE_ERROR(H5E_LINK, H5E_CANTDEC, FAIL, "unable to decrement refcount on newly created object") - } /* end if */ - - /* Close the location given to the user callback if it was created */ - if (grp_id >= 0) { - if (H5I_dec_app_ref(grp_id) < 0) - HDONE_ERROR(H5E_LINK, H5E_CANTRELEASE, FAIL, "unable to close ID from UD callback") - } /* end if */ - else if (grp != NULL) { - if (H5G_close(grp) < 0) - HDONE_ERROR(H5E_LINK, H5E_CANTRELEASE, FAIL, "unable to close group given to UD callback") - } /* end if */ - else if (temp_loc_init) - H5G_loc_free(&temp_loc); - - /* 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__link_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L__create_real - * - * Purpose: Creates a link at a path location - * - * lnk should have linkclass-specific information already - * set, but this function will take care of setting name. - * - * obj_path can be NULL if the object's path doesn't need to - * be set, and obj_file can be NULL if the object is not a - * hard link. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Monday, December 5, 2005 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__create_real(const H5G_loc_t *link_loc, const char *link_name, H5G_name_t *obj_path, H5F_t *obj_file, - H5O_link_t *lnk, H5O_obj_create_t *ocrt_info, hid_t lcpl_id) -{ - char * norm_link_name = NULL; /* Pointer to normalized link name */ - unsigned target_flags = H5G_TARGET_NORMAL; /* Flags to pass to group traversal function */ - H5P_genplist_t *lc_plist = NULL; /* Link creation property list */ - H5L_trav_cr_t udata; /* User data for callback */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Check args */ - HDassert(link_loc); - HDassert(link_name && *link_name); - HDassert(lnk); - HDassert(lnk->type >= H5L_TYPE_HARD && lnk->type <= H5L_TYPE_MAX); - - /* Get normalized link name */ - if ((norm_link_name = H5G_normalize(link_name)) == NULL) - HGOTO_ERROR(H5E_LINK, H5E_BADVALUE, FAIL, "can't normalize name") - - /* Check for flags present in creation property list */ - if (lcpl_id != H5P_DEFAULT) { - unsigned crt_intmd_group; - - /* Get link creation property list */ - if (NULL == (lc_plist = (H5P_genplist_t *)H5I_object(lcpl_id))) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list") - - /* Get intermediate group creation property */ - if (H5CX_get_intermediate_group(&crt_intmd_group) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't get 'create intermediate group' property") - - if (crt_intmd_group > 0) - target_flags |= H5G_CRT_INTMD_GROUP; - } /* end if */ - - /* Set up user data - * FILE is used to make sure that hard links don't cross files, and - * should be NULL for other link types. - * LC_PLIST is a pointer to the link creation property list. - * PATH is a pointer to the path of the object being inserted if this is - * a hard link; this is used to set the paths to objects when they are - * created. For other link types, this is NULL. - * OCRT_INFO is a pointer to the structure for object creation. - * LNK is the link struct passed into this function. At this point all - * of its fields should be populated except for name, which is set when - * inserting it in the callback. - */ - udata.file = obj_file; - udata.lc_plist = lc_plist; - udata.path = obj_path; - udata.ocrt_info = ocrt_info; - udata.lnk = lnk; - - /* Traverse the destination path & create new link */ - if (H5G_traverse(link_loc, link_name, target_flags, H5L__link_cb, &udata) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTINSERT, FAIL, "can't insert link") - -done: - /* Free the normalized path name */ - if (norm_link_name) - H5MM_xfree(norm_link_name); - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__create_real() */ - -/*------------------------------------------------------------------------- - * Function: H5L__create_hard - * - * Purpose: Creates a hard link from NEW_NAME to CUR_NAME. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Robb Matzke - * Monday, April 6, 1998 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__create_hard(H5G_loc_t *cur_loc, const char *cur_name, const H5G_loc_t *link_loc, const char *link_name, - hid_t lcpl_id) -{ - char * norm_cur_name = NULL; /* Pointer to normalized current name */ - H5F_t * link_file = NULL; /* Pointer to file to link to */ - H5O_link_t lnk; /* Link to insert */ - H5G_loc_t obj_loc; /* Location of object to link to */ - H5G_name_t path; /* obj_loc's path*/ - H5O_loc_t oloc; /* obj_loc's oloc */ - hbool_t loc_valid = FALSE; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Check args */ - HDassert(cur_loc); - HDassert(cur_name && *cur_name); - HDassert(link_loc); - HDassert(link_name && *link_name); - - /* Get normalized copy of the current name */ - if ((norm_cur_name = H5G_normalize(cur_name)) == NULL) - HGOTO_ERROR(H5E_LINK, H5E_BADVALUE, FAIL, "can't normalize name") - - /* Set up link data specific to hard links */ - lnk.type = H5L_TYPE_HARD; - - /* Get object location for object pointed to */ - obj_loc.path = &path; - obj_loc.oloc = &oloc; - H5G_loc_reset(&obj_loc); - if (H5G_loc_find(cur_loc, norm_cur_name, &obj_loc) < 0) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "source object not found") - loc_valid = TRUE; - - /* Construct link information for eventual insertion */ - lnk.u.hard.addr = obj_loc.oloc->addr; - - /* Set destination's file information */ - link_file = obj_loc.oloc->file; - - /* 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, NULL, lcpl_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 (H5G_loc_free(&obj_loc) < 0) - HDONE_ERROR(H5E_LINK, H5E_CANTRELEASE, FAIL, "unable to free location") - - /* Free the normalized path name */ - if (norm_cur_name) - H5MM_xfree(norm_cur_name); - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__create_hard() */ - -/*------------------------------------------------------------------------- - * Function: H5L__create_soft - * - * Purpose: Creates a soft link from LINK_NAME to TARGET_PATH. - * - * Return: SUCCEED/FAIL - * - * Programmer: Robb Matzke - * Monday, April 6, 1998 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__create_soft(const char *target_path, const H5G_loc_t *link_loc, const char *link_name, hid_t lcpl_id) -{ - char * norm_target = NULL; /* Pointer to normalized current name */ - H5O_link_t lnk; /* Link to insert */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Check args */ - HDassert(link_loc); - HDassert(target_path && *target_path); - HDassert(link_name && *link_name); - - /* Get normalized copy of the link target */ - if ((norm_target = H5G_normalize(target_path)) == NULL) - HGOTO_ERROR(H5E_LINK, H5E_BADVALUE, FAIL, "can't normalize name") - - /* Set up link data specific to soft links */ - lnk.type = H5L_TYPE_SOFT; - lnk.u.soft.name = norm_target; - - /* Create actual link to the object */ - if (H5L__create_real(link_loc, link_name, NULL, NULL, &lnk, NULL, lcpl_id) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create new link to object") - -done: - /* Free the normalized target name */ - if (norm_target) - H5MM_xfree(norm_target); - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__create_soft() */ - -/*------------------------------------------------------------------------- - * Function: H5L__create_ud - * - * Purpose: Creates a user-defined link. See H5Lcreate_ud for - * full documentation. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: James Laird - * Friday, May 19, 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__create_ud(const H5G_loc_t *link_loc, const char *link_name, const void *ud_data, size_t ud_data_size, - H5L_type_t type, hid_t lcpl_id) -{ - H5O_link_t lnk; /* Link to insert */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Check args */ - HDassert(type >= H5L_TYPE_UD_MIN && type <= H5L_TYPE_MAX); - HDassert(link_loc); - HDassert(link_name && *link_name); - HDassert(ud_data_size == 0 || ud_data); - - /* Initialize the link struct's pointer to its udata buffer */ - lnk.u.ud.udata = NULL; - - /* Make sure that this link class is registered */ - if (H5L__find_class_idx(type) < 0) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "link class has not been registered with library") - - /* Fill in UD link-specific information in the link struct*/ - if (ud_data_size > 0) { - lnk.u.ud.udata = H5MM_malloc((size_t)ud_data_size); - H5MM_memcpy(lnk.u.ud.udata, ud_data, (size_t)ud_data_size); - } /* end if */ - else - lnk.u.ud.udata = NULL; - - lnk.u.ud.size = ud_data_size; - lnk.type = type; - - /* Create actual link to the object */ - if (H5L__create_real(link_loc, link_name, NULL, NULL, &lnk, NULL, lcpl_id) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to register new name for object") - -done: - /* Free the link's udata buffer if it's been allocated */ - H5MM_xfree(lnk.u.ud.udata); - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__create_ud() */ - -/*------------------------------------------------------------------------- - * Function: H5L__get_val_real - * - * Purpose: Retrieve link value from a link object - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Monday, November 13 2006 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__get_val_real(const H5O_link_t *lnk, void *buf, size_t size) -{ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Sanity check */ - HDassert(lnk); - - /* Check for soft link */ - if (H5L_TYPE_SOFT == lnk->type) { - /* Copy to output buffer */ - if (size > 0 && buf) { - HDstrncpy((char *)buf, lnk->u.soft.name, size); - if (HDstrlen(lnk->u.soft.name) >= size) - ((char *)buf)[size - 1] = '\0'; - } /* end if */ - } /* end if */ - /* Check for user-defined link */ - else if (lnk->type >= H5L_TYPE_UD_MIN) { - const H5L_class_t *link_class; /* User-defined link class */ - - /* 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 ((link_class->query_func)(lnk->name, lnk->u.ud.udata, lnk->u.ud.size, buf, size) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CALLBACK, FAIL, "query callback returned failure") - } /* end if */ - else if (buf && size > 0) - ((char *)buf)[0] = '\0'; - } /* end if */ - else - HGOTO_ERROR(H5E_LINK, H5E_BADTYPE, FAIL, "object is not a symbolic or user-defined link") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__get_val_real() */ - -/*------------------------------------------------------------------------- - * Function: H5L__get_val_cb - * - * Purpose: Callback for retrieving link value or udata. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Tuesday, September 20, 2005 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__get_val_cb(H5G_loc_t H5_ATTR_UNUSED *grp_loc /*in*/, const char *name, const H5O_link_t *lnk, - H5G_loc_t H5_ATTR_UNUSED *obj_loc, void *_udata /*in,out*/, H5G_own_loc_t *own_loc /*out*/) -{ - H5L_trav_gv_t *udata = (H5L_trav_gv_t *)_udata; /* User data passed in */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Check if the name in this group resolved to a valid link */ - if (lnk == NULL) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "'%s' doesn't exist", name) - - /* Retrieve the value for the link */ - if (H5L__get_val_real(lnk, udata->buf, udata->size) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't retrieve link value") - -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_val_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L__get_val - * - * Purpose: Returns the value of a symbolic link or the udata for a - * user-defined link. - * - * Return: Success: Non-negative, with at most SIZE bytes of the - * link value copied into the BUF buffer. If the - * link value is larger than SIZE characters - * counting the null terminator then the BUF - * result will not be null terminated. - * - * Failure: Negative - * - * Programmer: Robb Matzke - * Monday, April 13, 1998 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__get_val(const H5G_loc_t *loc, const char *name, void *buf /*out*/, size_t size) -{ - H5L_trav_gv_t udata; /* User data for callback */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Sanity check */ - HDassert(loc); - HDassert(name && *name); - - /* Set up user data for retrieving information */ - udata.size = size; - udata.buf = buf; - - /* Traverse the group hierarchy to locate the object to get info about */ - if (H5G_traverse(loc, name, H5G_TARGET_SLINK | H5G_TARGET_UDLINK, H5L__get_val_cb, &udata) < 0) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "name doesn't exist") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5L__get_val() */ - -/*------------------------------------------------------------------------- - * Function: H5L__get_val_by_idx_cb - * - * Purpose: Callback for retrieving a link's value according to an - * index's order. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Monday, November 13 2006 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__get_val_by_idx_cb(H5G_loc_t H5_ATTR_UNUSED *grp_loc /*in*/, const char H5_ATTR_UNUSED *name, - const H5O_link_t H5_ATTR_UNUSED *lnk, H5G_loc_t *obj_loc, void *_udata /*in,out*/, - H5G_own_loc_t *own_loc /*out*/) -{ - H5L_trav_gvbi_t *udata = (H5L_trav_gvbi_t *)_udata; /* User data passed in */ - H5O_link_t fnd_lnk; /* Link within group */ - hbool_t lnk_copied = FALSE; /* Whether the link was copied */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Check if the name of the group resolved to a valid object */ - if (obj_loc == NULL) - HGOTO_ERROR(H5E_LINK, 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, &fnd_lnk) < 0) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "link not found") - lnk_copied = TRUE; - - /* Retrieve the value for the link */ - if (H5L__get_val_real(&fnd_lnk, udata->buf, udata->size) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't retrieve link value") - -done: - /* Reset the link information, if we have a copy */ - if (lnk_copied) - H5O_msg_reset(H5O_LINK_ID, &fnd_lnk); - - /* 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_val_by_idx_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L__get_val_by_idx - * - * Purpose: Internal routine to query a link value according to the - * index within a group - * - * Return: SUCCEED/FAIL - * - * Programmer: Quincey Koziol - * December 27, 2017 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__get_val_by_idx(const H5G_loc_t *loc, const char *name, H5_index_t idx_type, H5_iter_order_t order, - hsize_t n, void *buf /*out*/, size_t size) -{ - H5L_trav_gvbi_t udata; /* User data for callback */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Check arguments */ - HDassert(loc); - HDassert(name && *name); - - /* Set up user data for retrieving information */ - udata.idx_type = idx_type; - udata.order = order; - udata.n = n; - udata.buf = buf; - udata.size = size; - - /* Traverse the group hierarchy to locate the object to get info about */ - if (H5G_traverse(loc, name, H5G_TARGET_SLINK | H5G_TARGET_UDLINK, H5L__get_val_by_idx_cb, &udata) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't get link info for index: %llu", (unsigned long long)n) - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__get_val_by_idx() */ - -/*------------------------------------------------------------------------- - * Function: H5L__delete_cb - * - * Purpose: Callback for deleting a link. This routine - * actually deletes the link - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Monday, September 19, 2005 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__delete_cb(H5G_loc_t *grp_loc /*in*/, const char *name, const H5O_link_t *lnk, - H5G_loc_t H5_ATTR_UNUSED *obj_loc, void H5_ATTR_UNUSED *_udata /*in,out*/, - H5G_own_loc_t *own_loc /*out*/) -{ - herr_t ret_value = SUCCEED; - - FUNC_ENTER_STATIC - - /* Check if the group resolved to a valid link */ - if (grp_loc == NULL) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "group doesn't exist") - - /* Check if the name in this group resolved to a valid link */ - if (name == NULL) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "name doesn't exist") - - /* Check for non-existent (NULL) link. - * Note that this can also occur when attempting to remove '.' - */ - if (lnk == NULL) - HGOTO_ERROR(H5E_LINK, H5E_CANTDELETE, FAIL, - "callback link pointer is NULL (specified link may be '.' or not exist)") - - /* Remove the link from the group */ - if (H5G_obj_remove(grp_loc->oloc, grp_loc->path->full_path_r, name) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTDELETE, FAIL, "unable to remove link from group") - -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__delete_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L__delete - * - * Purpose: Delete a link from a group. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Robb Matzke - * Thursday, September 17, 1998 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__delete(const H5G_loc_t *loc, const char *name) -{ - char * norm_name = NULL; /* Pointer to normalized name */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Sanity check */ - HDassert(loc); - HDassert(name && *name); - - /* Get normalized copy of the name */ - if ((norm_name = H5G_normalize(name)) == NULL) - HGOTO_ERROR(H5E_LINK, H5E_BADVALUE, FAIL, "can't normalize name") - - /* Set up user data for unlink operation */ - if (H5G_traverse(loc, norm_name, H5G_TARGET_SLINK | H5G_TARGET_UDLINK | H5G_TARGET_MOUNT, H5L__delete_cb, - NULL) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTREMOVE, FAIL, "can't unlink object") - -done: - /* Free the normalized path name */ - if (norm_name) - H5MM_xfree(norm_name); - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__delete() */ - -/*------------------------------------------------------------------------- - * Function: H5L__delete_by_idx_cb - * - * Purpose: Callback for removing a link according to an index's order. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Monday, November 13 2006 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__delete_by_idx_cb(H5G_loc_t H5_ATTR_UNUSED *grp_loc /*in*/, const char H5_ATTR_UNUSED *name, - const H5O_link_t H5_ATTR_UNUSED *lnk, H5G_loc_t *obj_loc, void *_udata /*in,out*/, - H5G_own_loc_t *own_loc /*out*/) -{ - H5L_trav_gvbi_t *udata = (H5L_trav_gvbi_t *)_udata; /* User data passed in */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC_TAG((obj_loc) ? (obj_loc->oloc->addr) : HADDR_UNDEF) - - /* Check if the name of the group resolved to a valid object */ - if (obj_loc == NULL) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "group doesn't exist") - - /* Delete link */ - if (H5G_obj_remove_by_idx(obj_loc->oloc, obj_loc->path->full_path_r, udata->idx_type, udata->order, - udata->n) < 0) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "link not found") - -done: - /* Indicate that this callback didn't take ownership of the group * - * location for the object */ - *own_loc = H5G_OWN_NONE; - - FUNC_LEAVE_NOAPI_TAG(ret_value) -} /* end H5L__delete_by_idx_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L__delete_by_idx - * - * Purpose: Internal routine to delete a link according to its index - * within a group. - * - * Return: SUCCEED/FAIL - * - * Programmer: Quincey Koziol - * December 27, 2017 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__delete_by_idx(const H5G_loc_t *loc, const char *name, H5_index_t idx_type, H5_iter_order_t order, - hsize_t n) -{ - H5L_trav_rmbi_t udata; /* User data for callback */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Sanity check */ - HDassert(loc); - HDassert(name && *name); - - /* Set up user data for unlink operation */ - udata.idx_type = idx_type; - udata.order = order; - udata.n = n; - - /* Traverse the group hierarchy to remove the link */ - if (H5G_traverse(loc, name, H5G_TARGET_SLINK | H5G_TARGET_UDLINK | H5G_TARGET_MOUNT, - H5L__delete_by_idx_cb, &udata) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTDELETE, FAIL, "link doesn't exist") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__delete_by_idx() */ - -/*------------------------------------------------------------------------- - * Function: H5L__move_dest_cb - * - * Purpose: Second callback for moving and renaming an object. This routine - * inserts a new link into the group returned by the traversal. - * It is called by H5L__move_cb. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: James Laird - * Monday, April 3, 2006 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__move_dest_cb(H5G_loc_t *grp_loc /*in*/, const char *name, const H5O_link_t H5_ATTR_UNUSED *lnk, - H5G_loc_t *obj_loc, void *_udata /*in,out*/, H5G_own_loc_t *own_loc /*out*/) -{ - H5L_trav_mv2_t *udata = (H5L_trav_mv2_t *)_udata; /* User data passed in */ - H5G_t * grp = NULL; /* H5G_t for this group, opened to pass to user callback */ - hid_t grp_id = FAIL; /* ID for this group (passed to user callback */ - H5G_loc_t temp_loc; /* For UD callback */ - hbool_t temp_loc_init = FALSE; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Make sure an object with this name doesn't already exist */ - if (obj_loc != NULL) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "an object with that name already exists") - - /* Check for crossing file boundaries with a new hard link */ - if (udata->lnk->type == H5L_TYPE_HARD) - /* Check that both objects are in same file */ - if (!H5F_SAME_SHARED(grp_loc->oloc->file, udata->file)) - HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "moving a link across files is not allowed") - - /* Give the object its new name */ - /* Casting away const okay -JML */ - HDassert(udata->lnk->name == NULL); - udata->lnk->name = (char *)name; - - /* Insert the link into the group */ - if (H5G_obj_insert(grp_loc->oloc, name, udata->lnk, TRUE, H5O_TYPE_UNKNOWN, NULL) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to create new link to object") - - /* If the link was a user-defined link, call its move callback if it has one */ - if (udata->lnk->type >= H5L_TYPE_UD_MIN) { - const H5L_class_t *link_class; /* User-defined link class */ - - /* Get the link class for this type of link. */ - if (NULL == (link_class = H5L_find_class(udata->lnk->type))) - HGOTO_ERROR(H5E_LINK, H5E_NOTREGISTERED, FAIL, "link class is not registered") - - if ((!udata->copy && link_class->move_func) || (udata->copy && link_class->copy_func)) { - H5O_loc_t temp_oloc; - H5G_name_t temp_path; - - /* Create a temporary location (or else H5G_open will do a shallow - * copy and wipe out grp_loc) - */ - H5G_name_reset(&temp_path); - if (H5O_loc_copy_deep(&temp_oloc, grp_loc->oloc) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTCOPY, FAIL, "unable to copy object location") - - temp_loc.oloc = &temp_oloc; - temp_loc.path = &temp_path; - temp_loc_init = TRUE; - - /* Set up location for user-defined callback */ - if (NULL == (grp = H5G_open(&temp_loc))) - HGOTO_ERROR(H5E_LINK, H5E_CANTOPENOBJ, FAIL, "unable to open group") - if ((grp_id = H5VL_wrap_register(H5I_GROUP, grp, TRUE)) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTREGISTER, FAIL, "unable to register group ID") - - if (udata->copy) { - 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_app_ref(grp_id) < 0) - HDONE_ERROR(H5E_LINK, H5E_CANTRELEASE, FAIL, "unable to close ID from UD callback") - } /* end if */ - else if (grp != NULL) { - if (H5G_close(grp) < 0) - HDONE_ERROR(H5E_LINK, H5E_CANTRELEASE, FAIL, "unable to close group given to UD callback") - } /* end if */ - else if (temp_loc_init) - H5G_loc_free(&temp_loc); - - /* Indicate that this callback didn't take ownership of the group * - * location for the object */ - *own_loc = H5G_OWN_NONE; - - /* Reset the "name" field in udata->lnk because it is owned by traverse() - * and must not be manipulated after traverse closes */ - udata->lnk->name = NULL; - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__move_dest_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L__move_cb - * - * Purpose: Callback for moving and renaming an object. This routine - * replaces the names of open objects with the moved object - * in the path - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: James Laird - * Friday, April 3, 2006 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__move_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*/) -{ - H5L_trav_mv_t *udata = (H5L_trav_mv_t *)_udata; /* User data passed in */ - H5L_trav_mv2_t udata_out; /* User data for H5L__move_dest_cb traversal */ - char * orig_name = NULL; /* The name of the link in this group */ - hbool_t link_copied = FALSE; /* Has udata_out.lnk been allocated? */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Check if the name in this group resolved to a valid link */ - if (obj_loc == NULL) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "name doesn't exist") - - /* Check for operations on '.' */ - if (lnk == NULL) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "the name of a link must be supplied to move or copy") - - /* Set up user data for move_dest_cb */ - if (NULL == (udata_out.lnk = (H5O_link_t *)H5O_msg_copy(H5O_LINK_ID, lnk, 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. - */ - udata_out.lnk->name = (char *)H5MM_xfree(udata_out.lnk->name); - link_copied = TRUE; - - udata_out.lnk->cset = udata->cset; - udata_out.file = grp_loc->oloc->file; - udata_out.copy = udata->copy; - - /* Keep a copy of link's name (it's "owned" by the H5G_traverse() routine) */ - orig_name = H5MM_xstrdup(name); - - /* Reset the # of soft / UD links that can be traversed, so that the second - * (destination) traversal has the correct value - */ - if (H5CX_set_nlinks(udata->orig_nlinks) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTSET, FAIL, "can't reset # of soft / UD links to traverse") - - /* Insert the link into its new location */ - if (H5G_traverse(udata->dst_loc, udata->dst_name, udata->dst_target_flags, H5L__move_dest_cb, - &udata_out) < 0) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to follow symbolic link") - - /* If this is a move and not a copy operation, change the object's name and remove the old link */ - if (!udata->copy) { - H5RS_str_t *dst_name_r; /* Ref-counted version of dest name */ - - /* Make certain that the destination name is a full (not relative) path */ - if (*(udata->dst_name) != '/') { - HDassert(udata->dst_loc->path->full_path_r); - - /* Create reference counted string for full dst path */ - if ((dst_name_r = H5G_build_fullpath_refstr_str(udata->dst_loc->path->full_path_r, - udata->dst_name)) == NULL) - HGOTO_ERROR(H5E_LINK, H5E_PATH, FAIL, "can't build destination path name") - } /* end if */ - else - dst_name_r = H5RS_wrap(udata->dst_name); - HDassert(dst_name_r); - - /* Fix names up */ - if (H5G_name_replace(lnk, H5G_NAME_MOVE, obj_loc->oloc->file, obj_loc->path->full_path_r, - udata->dst_loc->oloc->file, dst_name_r) < 0) { - H5RS_decr(dst_name_r); - HGOTO_ERROR(H5E_LINK, H5E_CANTINIT, FAIL, "unable to replace name") - } /* end if */ - - /* Remove the old link */ - if (H5G_obj_remove(grp_loc->oloc, grp_loc->path->full_path_r, orig_name) < 0) { - H5RS_decr(dst_name_r); - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to remove old name") - } /* end if */ - - H5RS_decr(dst_name_r); - } /* end if */ - -done: - /* Cleanup */ - if (orig_name) - H5MM_xfree(orig_name); - - /* If udata_out.lnk was copied, free any memory allocated - * In this special case, the H5L__move_dest_cb callback resets the name - * so H5O_msg_free shouldn't try to free it - */ - if (link_copied) - H5O_msg_free(H5O_LINK_ID, udata_out.lnk); - - /* 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__move_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L__move - * - * Purpose: Atomically move or copy a link. - * - * Creates a copy of a link in a new destination with a new name. - * SRC_LOC and SRC_NAME together define the link's original - * location, while DST_LOC and DST_NAME together define its - * final location. - * - * If copy_flag is FALSE, the original link is removed - * (effectively moving the link). - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: James Laird - * Monday, May 1, 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__move(const H5G_loc_t *src_loc, const char *src_name, const H5G_loc_t *dst_loc, const char *dst_name, - hbool_t copy_flag, hid_t lcpl_id) -{ - unsigned dst_target_flags = H5G_TARGET_NORMAL; - H5T_cset_t char_encoding = H5F_DEFAULT_CSET; /* Character encoding for link */ - H5P_genplist_t *lc_plist; /* Link creation property list */ - H5L_trav_mv_t udata; /* User data for traversal */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Sanity check */ - HDassert(src_loc); - HDassert(dst_loc); - HDassert(src_name && *src_name); - HDassert(dst_name && *dst_name); - - /* Check for flags present in creation property list */ - if (lcpl_id != H5P_DEFAULT) { - unsigned crt_intmd_group; - - if (NULL == (lc_plist = (H5P_genplist_t *)H5I_object(lcpl_id))) - HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a property list") - - /* Get intermediate group creation property */ - if (H5CX_get_intermediate_group(&crt_intmd_group) < 0) - HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get property value for creating missing groups") - - /* Set target flags for source and destination */ - if (crt_intmd_group > 0) - dst_target_flags |= H5G_CRT_INTMD_GROUP; - - /* Get character encoding property */ - if (H5CX_get_encoding(&char_encoding) < 0) - HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get property value for character encoding") - } /* end if */ - - /* Set up user data */ - udata.dst_loc = dst_loc; - udata.dst_name = dst_name; - udata.dst_target_flags = dst_target_flags; - udata.cset = char_encoding; - udata.copy = copy_flag; - - /* Retrieve the original # of soft / UD links that can be traversed, so - * that the countdown can be reset after the first path is traversed. - */ - if (H5CX_get_nlinks(&udata.orig_nlinks) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "unable to retrieve # of soft / UD links to traverse") - - /* Do the move */ - if (H5G_traverse(src_loc, src_name, H5G_TARGET_MOUNT | H5G_TARGET_SLINK | H5G_TARGET_UDLINK, H5L__move_cb, - &udata) < 0) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "unable to find link") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__move() */ - -/*------------------------------------------------------------------------- - * Function: H5L__exists_final_cb - * - * Purpose: Callback for checking whether a link exists, as the final - * component of a path - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Friday, March 16 2007 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__exists_final_cb(H5G_loc_t H5_ATTR_UNUSED *grp_loc /*in*/, const char H5_ATTR_UNUSED *name, - const H5O_link_t *lnk, H5G_loc_t H5_ATTR_UNUSED *obj_loc, void *_udata /*in,out*/, - H5G_own_loc_t *own_loc /*out*/) -{ - H5L_trav_le_t *udata = (H5L_trav_le_t *)_udata; /* User data passed in */ - - FUNC_ENTER_STATIC_NOERR - - /* Check if the name in this group resolved to a valid link */ - *udata->exists = (hbool_t)(lnk != NULL); - - /* Indicate that this callback didn't take ownership of the group * - * location for the object */ - *own_loc = H5G_OWN_NONE; - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5L__exists_final_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L__exists_inter_cb - * - * Purpose: Callback for checking whether a link exists, as an intermediate - * component of a path - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Thursday, December 31 2015 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__exists_inter_cb(H5G_loc_t H5_ATTR_UNUSED *grp_loc /*in*/, const char H5_ATTR_UNUSED *name, - const H5O_link_t *lnk, H5G_loc_t *obj_loc, void *_udata /*in,out*/, - H5G_own_loc_t *own_loc /*out*/) -{ - H5L_trav_le_t *udata = (H5L_trav_le_t *)_udata; /* User data passed in */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Check if the name in this group resolved to a valid link */ - if (lnk != NULL) { - /* Check for more components to the path */ - if (udata->sep) { - H5G_traverse_t cb_func; /* Callback function for tranversal */ - char * next; /* Pointer to next component name */ - - /* Look for another separator */ - next = udata->sep; - if (NULL == (udata->sep = HDstrchr(udata->sep, '/'))) - cb_func = H5L__exists_final_cb; - else { - /* Chew through adjacent separators, if present */ - do { - *udata->sep = '\0'; - udata->sep++; - } while ('/' == *udata->sep); - cb_func = H5L__exists_inter_cb; - } /* end else */ - if (H5G_traverse(obj_loc, next, H5G_TARGET_SLINK | H5G_TARGET_UDLINK, cb_func, udata) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't determine if link exists") - } /* end if */ - else - *udata->exists = TRUE; - } /* end if */ - else - *udata->exists = FALSE; - - /* Indicate that this callback didn't take ownership of the group * - * location for the object */ - *own_loc = H5G_OWN_NONE; - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__exists_inter_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L_exists_tolerant - * - * Purpose: Returns whether a link exists in a group - * - * Note: Same as H5L__exists, except that missing links are reported - * as 'FALSE' instead of causing failures - * - * Return: Non-negative (TRUE/FALSE) on success/Negative on failure - * - * Programmer: Quincey Koziol - * Thursday, December 31 2015 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L_exists_tolerant(const H5G_loc_t *loc, const char *name, hbool_t *exists) -{ - H5L_trav_le_t udata; /* User data for traversal */ - H5G_traverse_t cb_func; /* Callback function for tranversal */ - char * name_copy = NULL; /* Duplicate of name */ - char * name_trav; /* Name to traverse */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - /* Sanity checks */ - HDassert(loc); - HDassert(name); - HDassert(exists); - - /* Copy the name and skip leading '/'s */ - name_trav = name_copy = H5MM_strdup(name); - while ('/' == *name_trav) - name_trav++; - - /* A path of "/" will always exist in a file */ - if ('\0' == *name_trav) - *exists = TRUE; - else { - /* Set up user data & correct callback */ - udata.exists = exists; - if (NULL == (udata.sep = HDstrchr(name_trav, '/'))) - cb_func = H5L__exists_final_cb; - else { - /* Chew through adjacent separators, if present */ - do { - *udata.sep = '\0'; - udata.sep++; - } while ('/' == *udata.sep); - cb_func = H5L__exists_inter_cb; - } /* end else */ - - /* Traverse the group hierarchy to locate the link to check */ - if (H5G_traverse(loc, name_trav, H5G_TARGET_SLINK | H5G_TARGET_UDLINK, cb_func, &udata) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't determine if link exists") - } - -done: - /* Release duplicated string */ - H5MM_xfree(name_copy); - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5L_exists_tolerant() */ - -/*------------------------------------------------------------------------- - * Function: H5L__exists - * - * Purpose: Returns whether a link exists in a group - * - * Note: Same as H5L_exists_tolerant, except that missing links are reported - * as failures - * - * Return: Non-negative on success, with *exists set/Negative on failure - * - * Programmer: Quincey Koziol - * Friday, March 16 2007 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__exists(const H5G_loc_t *loc, const char *name, hbool_t *exists) -{ - H5L_trav_le_t udata; /* User data for traversal */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Sanity checks */ - HDassert(loc); - HDassert(name); - HDassert(exists); - - /* A path of "/" will always exist in a file */ - if (0 == HDstrcmp(name, "/")) - *exists = TRUE; - else { - /* Traverse the group hierarchy to locate the object to get info about */ - udata.exists = exists; - if (H5G_traverse(loc, name, H5G_TARGET_SLINK | H5G_TARGET_UDLINK, H5L__exists_final_cb, &udata) < 0) - HGOTO_ERROR(H5E_LINK, H5E_EXISTS, FAIL, "link doesn't exist") - } - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5L__exists() */ - -/*------------------------------------------------------------------------- - * Function: H5L__get_info_cb - * - * Purpose: Callback for retrieving a link's metadata - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: James Laird - * Monday, April 17 2006 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__get_info_cb(H5G_loc_t *grp_loc /*in*/, const char H5_ATTR_UNUSED *name, const H5O_link_t *lnk, - H5G_loc_t H5_ATTR_UNUSED *obj_loc, void *_udata /*in,out*/, H5G_own_loc_t *own_loc /*out*/) -{ - H5L_trav_gi_t *udata = (H5L_trav_gi_t *)_udata; /* User data passed in */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Check if the name in this group resolved to a valid link */ - if (lnk == NULL) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "name doesn't exist") - - /* Get information from the link */ - if (H5G_link_to_info(grp_loc->oloc, lnk, udata->linfo) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't get link info") - -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_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L_get_info - * - * Purpose: Returns metadata about a link. - * - * Return: SUCCEED/FAIL - * - * Programmer: James Laird - * Monday, April 17 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L_get_info(const H5G_loc_t *loc, const char *name, H5L_info2_t *linfo /*out*/) -{ - H5L_trav_gi_t udata; /* User data for callback */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - udata.linfo = linfo; - - /* Traverse the group hierarchy to locate the object to get info about */ - if (H5G_traverse(loc, name, H5G_TARGET_SLINK | H5G_TARGET_UDLINK, H5L__get_info_cb, &udata) < 0) - HGOTO_ERROR(H5E_LINK, H5E_EXISTS, FAIL, "name doesn't exist") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5L_get_info() */ - -/*------------------------------------------------------------------------- - * 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 H5_ATTR_UNUSED *grp_loc /*in*/, const char H5_ATTR_UNUSED *name, - const H5O_link_t H5_ATTR_UNUSED *lnk, H5G_loc_t *obj_loc, void *_udata /*in,out*/, - H5G_own_loc_t *own_loc /*out*/) -{ - H5L_trav_gibi_t *udata = (H5L_trav_gibi_t *)_udata; /* User data passed in */ - H5O_link_t fnd_lnk; /* Link within group */ - hbool_t lnk_copied = FALSE; /* Whether the link was copied */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Check if the name of the group resolved to a valid object */ - if (obj_loc == NULL) - HGOTO_ERROR(H5E_LINK, 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, &fnd_lnk) < 0) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "link not found") - lnk_copied = TRUE; - - /* Get information from the link */ - if (H5G_link_to_info(obj_loc->oloc, &fnd_lnk, udata->linfo) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't get link info") - -done: - /* Reset the link information, if we have a copy */ - if (lnk_copied) - H5O_msg_reset(H5O_LINK_ID, &fnd_lnk); - - /* 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: Internal routine to retrieve link info according to an - * index's order. - * - * Return: SUCCEED/FAIL - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__get_info_by_idx(const H5G_loc_t *loc, const char *name, H5_index_t idx_type, H5_iter_order_t order, - hsize_t n, H5L_info2_t *linfo /*out*/) -{ - H5L_trav_gibi_t udata; /* User data for callback */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Check arguments */ - HDassert(loc); - HDassert(name && *name); - HDassert(linfo); - - /* Set up user data for callback */ - udata.idx_type = idx_type; - udata.order = order; - udata.n = n; - udata.linfo = linfo; - - /* Traverse the group hierarchy to locate the object to get info about */ - if (H5G_traverse(loc, name, H5G_TARGET_SLINK | H5G_TARGET_UDLINK, H5L__get_info_by_idx_cb, &udata) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "unable to get link info") - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__get_info_by_idx() */ - -/*------------------------------------------------------------------------- - * Function: H5L__get_name_by_idx_cb - * - * Purpose: Callback for retrieving a link's name according to an - * index's order. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Saturday, November 11 2006 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5L__get_name_by_idx_cb(H5G_loc_t H5_ATTR_UNUSED *grp_loc /*in*/, const char H5_ATTR_UNUSED *name, - const H5O_link_t H5_ATTR_UNUSED *lnk, H5G_loc_t *obj_loc, void *_udata /*in,out*/, - H5G_own_loc_t *own_loc /*out*/) -{ - H5L_trav_gnbi_t *udata = (H5L_trav_gnbi_t *)_udata; /* User data passed in */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_STATIC - - /* Check if the name of the group resolved to a valid object */ - if (obj_loc == NULL) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "group doesn't exist") - - /* Query link */ - if ((udata->name_len = H5G_obj_get_name_by_idx(obj_loc->oloc, udata->idx_type, udata->order, udata->n, - udata->name, udata->size)) < 0) - HGOTO_ERROR(H5E_LINK, H5E_NOTFOUND, FAIL, "link not found") - -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_name_by_idx_cb() */ - -/*------------------------------------------------------------------------- - * Function: H5L__get_name_by_idx - * - * Purpose: Internal routine to retrieve link name according to an - * index's order. - * - * Return: SUCCEED/FAIL - * - *------------------------------------------------------------------------- - */ -ssize_t -H5L__get_name_by_idx(const H5G_loc_t *loc, const char *group_name, H5_index_t idx_type, H5_iter_order_t order, - hsize_t n, char *name /*out*/, size_t size) -{ - H5L_trav_gnbi_t udata; /* User data for callback */ - ssize_t ret_value = FAIL; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Check arguments */ - HDassert(loc); - HDassert(group_name && *group_name); - - /* Set up user data for callback */ - udata.idx_type = idx_type; - udata.order = order; - udata.n = n; - udata.name = name; - udata.size = size; - udata.name_len = -1; - - /* Traverse the group hierarchy to locate the link to get name of */ - if (H5G_traverse(loc, group_name, H5G_TARGET_SLINK | H5G_TARGET_UDLINK, H5L__get_name_by_idx_cb, &udata) < - 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't get name") - - /* Set the return value */ - ret_value = udata.name_len; - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__get_name_by_idx() */ - -/*------------------------------------------------------------------------- - * Function: H5L__link_copy_file - * - * Purpose: Copy a link and the object it points to from one file to - * another. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: Quincey Koziol - * Sep 29 2006 - * - *------------------------------------------------------------------------- - */ -herr_t -H5L__link_copy_file(H5F_t *dst_file, const H5O_link_t *_src_lnk, const H5O_loc_t *src_oloc, - H5O_link_t *dst_lnk, H5O_copy_t *cpy_info) -{ - H5O_link_t tmp_src_lnk; /* Temporary copy of src link, when needed */ - const H5O_link_t *src_lnk = _src_lnk; /* Source link */ - hbool_t dst_lnk_init = FALSE; /* Whether the destination link is initialized */ - hbool_t expanded_link_open = FALSE; /* Whether the target location has been opened */ - H5G_loc_t tmp_src_loc; /* Group location holding target object */ - H5G_name_t tmp_src_path; /* Path for target object */ - H5O_loc_t tmp_src_oloc; /* Object location for target object */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* check arguments */ - HDassert(dst_file); - HDassert(src_lnk); - HDassert(dst_lnk); - HDassert(cpy_info); - - /* Expand soft or external link, if requested */ - if ((H5L_TYPE_SOFT == src_lnk->type && cpy_info->expand_soft_link) || - (H5L_TYPE_EXTERNAL == src_lnk->type && cpy_info->expand_ext_link)) { - H5G_loc_t lnk_grp_loc; /* Group location holding link */ - H5G_name_t lnk_grp_path; /* Path for link */ - htri_t tar_exists; /* Whether the target object exists */ - - /* Set up group location for link */ - H5G_name_reset(&lnk_grp_path); - lnk_grp_loc.path = &lnk_grp_path; - lnk_grp_loc.oloc = (H5O_loc_t *)src_oloc; /* Casting away const OK -QAK */ - - /* Check if the target object exists */ - if ((tar_exists = H5G_loc_exists(&lnk_grp_loc, src_lnk->name)) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTCOPY, FAIL, "unable to check if target object exists") - - if (tar_exists) { - /* Make a temporary copy of the link, so that it will not change the - * info in the cache when we change it to a hard link */ - if (NULL == H5O_msg_copy(H5O_LINK_ID, src_lnk, &tmp_src_lnk)) - HGOTO_ERROR(H5E_LINK, H5E_CANTCOPY, FAIL, "unable to copy message") - - /* Set up group location for target object. Let H5G_traverse expand - * the link. */ - tmp_src_loc.path = &tmp_src_path; - tmp_src_loc.oloc = &tmp_src_oloc; - if (H5G_loc_reset(&tmp_src_loc) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTCOPY, FAIL, "unable to reset location") - - /* Find the target object */ - if (H5G_loc_find(&lnk_grp_loc, src_lnk->name, &tmp_src_loc) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTCOPY, FAIL, "unable to find target object") - expanded_link_open = TRUE; - - /* Convert symbolic link to hard link */ - if (tmp_src_lnk.type == H5L_TYPE_SOFT) - tmp_src_lnk.u.soft.name = (char *)H5MM_xfree(tmp_src_lnk.u.soft.name); - else if (tmp_src_lnk.u.ud.size > 0) - tmp_src_lnk.u.ud.udata = H5MM_xfree(tmp_src_lnk.u.ud.udata); - tmp_src_lnk.type = H5L_TYPE_HARD; - tmp_src_lnk.u.hard.addr = tmp_src_oloc.addr; - src_lnk = &tmp_src_lnk; - } /* end if */ - } /* end if */ - - /* Copy src link information to dst link information */ - if (NULL == H5O_msg_copy(H5O_LINK_ID, src_lnk, dst_lnk)) - HGOTO_ERROR(H5E_LINK, H5E_CANTCOPY, FAIL, "unable to copy message") - dst_lnk_init = TRUE; - - /* Check if object in source group is a hard link & copy it */ - if (H5L_TYPE_HARD == src_lnk->type) { - H5O_loc_t new_dst_oloc; /* Copied object location in destination */ - - /* Set up copied object location to fill in */ - H5O_loc_reset(&new_dst_oloc); - new_dst_oloc.file = dst_file; - - if (!expanded_link_open) { - /* Build temporary object location for source */ - H5O_loc_reset(&tmp_src_oloc); - tmp_src_oloc.file = src_oloc->file; - tmp_src_oloc.addr = src_lnk->u.hard.addr; - } /* end if */ - HDassert(H5F_addr_defined(tmp_src_oloc.addr)); - - /* Copy the shared object from source to destination */ - /* Don't care about obj_type or udata because those are only important - * for old style groups */ - if (H5O_copy_header_map(&tmp_src_oloc, &new_dst_oloc, cpy_info, TRUE, NULL, NULL) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTCOPY, FAIL, "unable to copy object") - - /* Copy new destination object's information for eventual insertion */ - dst_lnk->u.hard.addr = new_dst_oloc.addr; - } /* end if */ - -done: - /* Check if we used a temporary src link */ - if (src_lnk != _src_lnk) { - HDassert(src_lnk == &tmp_src_lnk); - H5O_msg_reset(H5O_LINK_ID, &tmp_src_lnk); - } /* end if */ - if (ret_value < 0) - if (dst_lnk_init) - H5O_msg_reset(H5O_LINK_ID, dst_lnk); - /* Check if we need to free the temp source oloc */ - if (expanded_link_open) - if (H5G_loc_free(&tmp_src_loc) < 0) - HDONE_ERROR(H5E_LINK, H5E_CANTFREE, FAIL, "unable to free object") - - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L__link_copy_file() */ - -/*------------------------------------------------------------------------- - * Function: H5L_iterate - * - * Purpose: Iterates through links in a group - * - * Return: SUCCEED/FAIL - * - *------------------------------------------------------------------------- - */ -herr_t -H5L_iterate(H5G_loc_t *loc, const char *group_name, H5_index_t idx_type, H5_iter_order_t order, - hsize_t *idx_p, H5L_iterate2_t op, void *op_data) -{ - H5G_link_iterate_t lnk_op; /* Link operator */ - hsize_t last_lnk; /* Index of last object looked at */ - hsize_t idx; /* Internal location to hold index */ - herr_t ret_value = FAIL; /* Return value */ - - FUNC_ENTER_NOAPI_NOINIT - - /* Sanity checks */ - HDassert(loc); - HDassert(group_name); - HDassert(op); - - /* Set up iteration beginning/end info */ - idx = (idx_p == NULL ? 0 : *idx_p); - last_lnk = 0; - - /* Build link operator info */ - lnk_op.op_type = H5G_LINK_OP_NEW; - lnk_op.op_func.op_new = op; - - /* Iterate over the links */ - if ((ret_value = H5G_iterate(loc, group_name, idx_type, order, idx, &last_lnk, &lnk_op, op_data)) < 0) - HGOTO_ERROR(H5E_LINK, H5E_BADITER, FAIL, "link iteration failed") - - /* Set the index we stopped at */ - if (idx_p) - *idx_p = last_lnk; - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* end H5L_iterate() */ |