/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Copyright by The HDF Group. * * Copyright by the Board of Trustees of the University of Illinois. * * All rights reserved. * * * * This file is part of HDF5. The full HDF5 copyright notice, including * * terms governing use, modification, and redistribution, is contained in * * the files COPYING and Copyright.html. COPYING can be found at the root * * of the source code distribution tree; Copyright.html can be found at the * * root level of an installed copy of the electronic HDF5 document set and * * is linked from the top-level documents page. It can also be found at * * http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * * access to either file, you may request a copy from help@hdfgroup.org. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /*------------------------------------------------------------------------- * * Created: H5Plapl.c * July 14 2006 * James Laird * * Purpose: Link access property list class routines * *------------------------------------------------------------------------- */ /****************/ /* Module Setup */ /****************/ #define H5P_PACKAGE /*suppress error about including H5Ppkg */ /***********/ /* Headers */ /***********/ #include "H5private.h" /* Generic Functions */ #include "H5Eprivate.h" /* Error handling */ #include "H5Iprivate.h" /* IDs */ #include "H5Lprivate.h" /* Links */ #include "H5MMprivate.h" /* Memory management */ #include "H5Ppkg.h" /* Property lists */ /****************/ /* Local Macros */ /****************/ /* ======== Link access properties ======== */ /* Definitions for number of soft links to traverse */ #define H5L_ACS_NLINKS_SIZE sizeof(size_t) #define H5L_ACS_NLINKS_DEF H5L_NUM_LINKS /*max symlinks to follow per lookup */ #define H5L_ACS_NLINKS_ENC H5P__encode_size_t #define H5L_ACS_NLINKS_DEC H5P__decode_size_t /* Definitions for external link prefix */ #define H5L_ACS_ELINK_PREFIX_SIZE sizeof(char *) #define H5L_ACS_ELINK_PREFIX_DEF NULL /*default is no prefix */ #define H5L_ACS_ELINK_PREFIX_ENC H5P_lacc_elink_pref_enc #define H5L_ACS_ELINK_PREFIX_DEC H5P_lacc_elink_pref_dec #define H5L_ACS_ELINK_PREFIX_DEL H5P_lacc_elink_pref_del #define H5L_ACS_ELINK_PREFIX_COPY H5P_lacc_elink_pref_copy #define H5L_ACS_ELINK_PREFIX_CMP H5P_lacc_elink_pref_cmp #define H5L_ACS_ELINK_PREFIX_CLOSE H5P_lacc_elink_pref_close /* Definitions for setting fapl of external link access */ #define H5L_ACS_ELINK_FAPL_SIZE sizeof(hid_t) #define H5L_ACS_ELINK_FAPL_DEF H5P_DEFAULT #define H5L_ACS_ELINK_FAPL_ENC H5P_lacc_elink_fapl_enc #define H5L_ACS_ELINK_FAPL_DEC H5P_lacc_elink_fapl_dec #define H5L_ACS_ELINK_FAPL_DEL H5P_lacc_elink_fapl_del #define H5L_ACS_ELINK_FAPL_COPY H5P_lacc_elink_fapl_copy #define H5L_ACS_ELINK_FAPL_CMP H5P_lacc_elink_fapl_cmp #define H5L_ACS_ELINK_FAPL_CLOSE H5P_lacc_elink_fapl_close /* Definitions for file access flags for external link traversal */ #define H5L_ACS_ELINK_FLAGS_SIZE sizeof(unsigned) #define H5L_ACS_ELINK_FLAGS_DEF H5F_ACC_DEFAULT #define H5L_ACS_ELINK_FLAGS_ENC H5P__encode_unsigned #define H5L_ACS_ELINK_FLAGS_DEC H5P__decode_unsigned /* Definitions for callback function for external link traversal */ #define H5L_ACS_ELINK_CB_SIZE sizeof(H5L_elink_cb_t) #define H5L_ACS_ELINK_CB_DEF {NULL,NULL} /******************/ /* Local Typedefs */ /******************/ /********************/ /* Package Typedefs */ /********************/ /********************/ /* Local Prototypes */ /********************/ /* Property class callbacks */ static herr_t H5P_lacc_reg_prop(H5P_genclass_t *pclass); /* Property list callbacks */ static herr_t H5P_lacc_elink_pref_enc(const void *value, void **_pp, size_t *size); static herr_t H5P_lacc_elink_pref_dec(const void **_pp, void *value); static herr_t H5P_lacc_elink_pref_del(hid_t prop_id, const char* name, size_t size, void* value); static herr_t H5P_lacc_elink_pref_copy(const char* name, size_t size, void* value); static int H5P_lacc_elink_pref_cmp(const void *value1, const void *value2, size_t size); static herr_t H5P_lacc_elink_pref_close(const char* name, size_t size, void* value); static herr_t H5P_lacc_elink_fapl_enc(const void *value, void **_pp, size_t *size); static herr_t H5P_lacc_elink_fapl_dec(const void **_pp, void *value); static herr_t H5P_lacc_elink_fapl_del(hid_t prop_id, const char* name, size_t size, void* value); static herr_t H5P_lacc_elink_fapl_copy(const char* name, size_t size, void* value); static int H5P_lacc_elink_fapl_cmp(const void *value1, const void *value2, size_t size); static herr_t H5P_lacc_elink_fapl_close(const char* name, size_t size, void* value); /*********************/ /* Package Variables */ /*********************/ /* Dataset creation property list class library initialization object */ const H5P_libclass_t H5P_CLS_LACC[1] = {{ "link access", /* Class name for debugging */ H5P_TYPE_LINK_ACCESS, /* Class type */ &H5P_CLS_ROOT_g, /* Parent class ID */ &H5P_CLS_LINK_ACCESS_g, /* Pointer to class ID */ &H5P_LST_LINK_ACCESS_g, /* Pointer to default property list ID */ H5P_lacc_reg_prop, /* Default property registration routine */ NULL, /* Class creation callback */ NULL, /* Class creation callback info */ NULL, /* Class copy callback */ NULL, /* Class copy callback info */ NULL, /* Class close callback */ NULL /* Class close callback info */ }}; /*****************************/ /* Library Private Variables */ /*****************************/ /*******************/ /* Local Variables */ /*******************/ /* Property value defaults */ static const size_t H5L_def_nlinks_g = H5L_ACS_NLINKS_DEF; /* Default number of soft links to traverse */ static const char *H5L_def_elink_prefix_g = H5L_ACS_ELINK_PREFIX_DEF; /* Default external link prefix string */ static const hid_t H5L_def_fapl_id_g = H5L_ACS_ELINK_FAPL_DEF; /* Default fapl for external link access */ static const unsigned H5L_def_elink_flags_g = H5L_ACS_ELINK_FLAGS_DEF; /* Default file access flags for external link traversal */ static const H5L_elink_cb_t H5L_def_elink_cb_g = H5L_ACS_ELINK_CB_DEF; /* Default external link traversal callback */ /*------------------------------------------------------------------------- * Function: H5P_lacc_reg_prop * * Purpose: Register the dataset creation property list class's properties * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * October 31, 2006 * * Modifications: * Vailin Choi, Sept. 12th 2008 * Register the setting of file access property list for link access * *------------------------------------------------------------------------- */ static herr_t H5P_lacc_reg_prop(H5P_genclass_t *pclass) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT /* Register property for number of links traversed */ if(H5P_register_real(pclass, H5L_ACS_NLINKS_NAME, H5L_ACS_NLINKS_SIZE, &H5L_def_nlinks_g, NULL, NULL, NULL, H5L_ACS_NLINKS_ENC, H5L_ACS_NLINKS_DEC, NULL, NULL, NULL, NULL) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class") /* Register property for external link prefix */ if(H5P_register_real(pclass, H5L_ACS_ELINK_PREFIX_NAME, H5L_ACS_ELINK_PREFIX_SIZE, &H5L_def_elink_prefix_g, NULL, NULL, NULL, H5L_ACS_ELINK_PREFIX_ENC, H5L_ACS_ELINK_PREFIX_DEC, H5L_ACS_ELINK_PREFIX_DEL, H5L_ACS_ELINK_PREFIX_COPY, H5L_ACS_ELINK_PREFIX_CMP, H5L_ACS_ELINK_PREFIX_CLOSE) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class") /* Register fapl for link access */ if(H5P_register_real(pclass, H5L_ACS_ELINK_FAPL_NAME, H5L_ACS_ELINK_FAPL_SIZE, &H5L_def_fapl_id_g, NULL, NULL, NULL, H5L_ACS_ELINK_FAPL_ENC, H5L_ACS_ELINK_FAPL_DEC, H5L_ACS_ELINK_FAPL_DEL, H5L_ACS_ELINK_FAPL_COPY, H5L_ACS_ELINK_FAPL_CMP, H5L_ACS_ELINK_FAPL_CLOSE) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class") /* Register property for external link file access flags */ if(H5P_register_real(pclass, H5L_ACS_ELINK_FLAGS_NAME, H5L_ACS_ELINK_FLAGS_SIZE, &H5L_def_elink_flags_g, NULL, NULL, NULL, H5L_ACS_ELINK_FLAGS_ENC, H5L_ACS_ELINK_FLAGS_DEC, NULL, NULL, NULL, NULL) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class") /* Register property for external link file traversal callback */ /* (Note: this property should not have an encode/decode callback -QAK) */ if(H5P_register_real(pclass, H5L_ACS_ELINK_CB_NAME, H5L_ACS_ELINK_CB_SIZE, &H5L_def_elink_cb_g, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5P_lacc_reg_prop() */ /*------------------------------------------------------------------------- * Function: H5P_lacc_elink_fapl_enc * * Purpose: Callback routine which is called whenever the elink FAPL * property in the dataset access property list is * encoded. * * Return: Success: Non-negative * Failure: Negative * * Programmer: Quincey Koziol * Wednesday, August 15, 2012 * *------------------------------------------------------------------------- */ static herr_t H5P_lacc_elink_fapl_enc(const void *value, void **_pp, size_t *size) { const hid_t *elink_fapl = (const hid_t *)value; /* Property to encode */ uint8_t **pp = (uint8_t **)_pp; H5P_genplist_t *fapl_plist; /* Pointer to property list */ hbool_t non_default_fapl = FALSE; /* Whether the FAPL is non-default */ size_t enc_size = 0; /* FAPL's encoded size */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT /* Check for non-default FAPL */ if(*elink_fapl != H5P_DEFAULT) { if(NULL == (fapl_plist = (H5P_genplist_t *)H5P_object_verify(*elink_fapl, H5P_FILE_ACCESS))) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get property list") non_default_fapl = TRUE; } /* end if */ if(NULL != *pp) { /* Store whether the FAPL is non-default */ *(*pp)++ = (uint8_t)non_default_fapl; } /* end if */ /* Encode the property list, if non-default */ /* (if *pp == NULL, will only compute the size) */ if(non_default_fapl) { if(H5P__encode(fapl_plist, TRUE, *pp, &enc_size) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTENCODE, FAIL, "can't encode property list") if(*pp) *pp += enc_size; } /* end if */ *size += (1 + enc_size); /* Non-default flag, plus encoded property list size */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5P_lacc_elink_fapl_enc() */ /*------------------------------------------------------------------------- * Function: H5P_lacc_elink_fapl_dec * * Purpose: Callback routine which is called whenever the elink FAPL * property in the dataset access property list is * decoded. * * Return: Success: Non-negative * Failure: Negative * * Programmer: Quincey Koziol * Wednesday, August 15, 2012 * *------------------------------------------------------------------------- */ static herr_t H5P_lacc_elink_fapl_dec(const void **_pp, void *_value) { hid_t *elink_fapl = (hid_t *)_value; /* The elink FAPL value */ const uint8_t **pp = (const uint8_t **)_pp; hbool_t non_default_fapl; /* Whether the FAPL is non-default */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT HDassert(pp); HDassert(*pp); HDassert(elink_fapl); HDcompile_assert(sizeof(size_t) <= sizeof(uint64_t)); /* Determine if the FAPL is non-default */ non_default_fapl = (hbool_t)*(*pp)++; if(non_default_fapl) { H5P_genplist_t *fapl_plist; /* Pointer to property list */ size_t enc_size = 0; /* Encoded size of property list */ /* Decode the property list */ if((*elink_fapl = H5P__decode(*pp)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTDECODE, FAIL, "can't decode property") /* Get the property list object */ if(NULL == (fapl_plist = (H5P_genplist_t *)H5P_object_verify(*elink_fapl, H5P_FILE_ACCESS))) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get property list") /* Compute the encoded size of the property list */ if(H5P__encode(fapl_plist, TRUE, NULL, &enc_size) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTENCODE, FAIL, "can't compute encoded property list size") *pp += enc_size; } /* end if */ else *elink_fapl = H5P_DEFAULT; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5P_lacc_elink_fapl_dec() */ /*-------------------------------------------------------------------------- * Function: H5P_lacc_elink_fapl_del * * Purpose: Close the FAPL for link access * * Return: Success: Non-negative * Failure: Negative * * Programmer: Vailin Choi * Tuesday, Sept 23, 2008 * *-------------------------------------------------------------------------- */ /* ARGSUSED */ static herr_t H5P_lacc_elink_fapl_del(hid_t UNUSED prop_id, const char UNUSED *name, size_t UNUSED size, void *value) { hid_t l_fapl_id; herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI(FAIL) HDassert(value); l_fapl_id = (*(const hid_t *)value); if((l_fapl_id > H5P_DEFAULT) && (H5I_dec_ref(l_fapl_id) < 0)) HGOTO_ERROR(H5E_PLIST, H5E_CANTRELEASE, FAIL, "unable to close atom for file access property list") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5P_lacc_elink_fapl_del() */ /*-------------------------------------------------------------------------- * Function: H5P_lacc_elink_fapl_copy * * Purpose: Copy the FAPL for link access * * Return: Success: Non-negative * Failure: Negative * * Programmer: Vailin Choi * Tuesday, Sept 23, 2008 * *-------------------------------------------------------------------------- */ /* ARGSUSED */ static herr_t H5P_lacc_elink_fapl_copy(const char UNUSED *name, size_t UNUSED size, void *value) { hid_t l_fapl_id; herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI(FAIL) HDassert(value); l_fapl_id = (*(const hid_t *)value); if(l_fapl_id > H5P_DEFAULT) { H5P_genplist_t *l_fapl_plist; if(NULL == (l_fapl_plist = (H5P_genplist_t *)H5P_object_verify(l_fapl_id, H5P_FILE_ACCESS))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "can't get property list") if(((*(hid_t *)value) = H5P_copy_plist(l_fapl_plist, FALSE)) < 0) HGOTO_ERROR(H5E_INTERNAL, H5E_CANTINIT, FAIL, "unable to copy file access properties") } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5P_lacc_elink_fapl_copy() */ /*------------------------------------------------------------------------- * Function: H5P_lacc_elink_fapl_cmp * * Purpose: Callback routine which is called whenever the elink FAPL * property in the link access property list is * compared. * * Return: zero if VALUE1 and VALUE2 are equal, non zero otherwise. * * Programmer: Quincey Koziol * Wednesday, August 15, 2012 * *------------------------------------------------------------------------- */ static int H5P_lacc_elink_fapl_cmp(const void *value1, const void *value2, size_t UNUSED size) { const hid_t *fapl1 = (const hid_t *)value1; const hid_t *fapl2 = (const hid_t *)value2; H5P_genplist_t *obj1, *obj2; /* Property lists to compare */ int ret_value = 0; FUNC_ENTER_NOAPI_NOINIT_NOERR /* Check for comparison with default value */ if(*fapl1 == 0 && *fapl2 > 0) HGOTO_DONE(1); if(*fapl1 > 0 && *fapl2 == 0) HGOTO_DONE(-1); /* Get the property list objects */ obj1 = (H5P_genplist_t *)H5I_object(*fapl1); obj2 = (H5P_genplist_t *)H5I_object(*fapl2); /* Check for NULL property lists */ if(obj1 == NULL && obj2 != NULL) HGOTO_DONE(1); if(obj1 != NULL && obj2 == NULL) HGOTO_DONE(-1); if(obj1 && obj2) { herr_t status; status = H5P_cmp_plist(obj1, obj2, &ret_value); HDassert(status >= 0); } /* end if */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5P_lacc_elink_fapl_cmp() */ /*-------------------------------------------------------------------------- * Function: H5P_lacc_elink_fapl_close * * Purpose: Close the FAPL for link access * * Return: Success: Non-negative * Failure: Negative * * Programmer: Vailin Choi * Tuesday, Sept 23, 2008 * *--------------------------------------------------------------------------- */ /* ARGSUSED */ static herr_t H5P_lacc_elink_fapl_close(const char UNUSED *name, size_t UNUSED size, void *value) { hid_t l_fapl_id; herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI_NOINIT HDassert(value); l_fapl_id = (*(const hid_t *)value); if((l_fapl_id > H5P_DEFAULT) && (H5I_dec_ref(l_fapl_id) < 0)) HGOTO_ERROR(H5E_PLIST, H5E_CANTRELEASE, FAIL, "unable to close atom for file access property list") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5P_lacc_elink_fapl_close() */ /*------------------------------------------------------------------------- * Function: H5P_lacc_elink_pref_enc * * Purpose: Callback routine which is called whenever the elink flags * property in the dataset access property list is * encoded. * * Return: Success: Non-negative * Failure: Negative * * Programmer: Mohamad Chaarawi * Monday, October 10, 2011 * *------------------------------------------------------------------------- */ static herr_t H5P_lacc_elink_pref_enc(const void *value, void **_pp, size_t *size) { const char *elink_pref = *(const char * const *)value; uint8_t **pp = (uint8_t **)_pp; size_t len = 0; uint64_t enc_value; unsigned enc_size; FUNC_ENTER_NOAPI_NOINIT_NOERR HDcompile_assert(sizeof(size_t) <= sizeof(uint64_t)); /* calculate prefix length */ if(NULL != elink_pref) len = HDstrlen(elink_pref); enc_value = (uint64_t)len; enc_size = H5V_limit_enc_size(enc_value); HDassert(enc_size < 256); if(NULL != *pp) { /* encode the length of the prefix */ *(*pp)++ = (uint8_t)enc_size; UINT64ENCODE_VAR(*pp, enc_value, enc_size); /* encode the prefix */ if(NULL != elink_pref) { HDmemcpy(*(char **)pp, elink_pref, len); *pp += len; } /* end if */ } /* end if */ *size += (1 + enc_size); if(NULL != elink_pref) *size += len; FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5P_lacc_elink_pref_enc() */ /*------------------------------------------------------------------------- * Function: H5P_lacc_elink_pref_dec * * Purpose: Callback routine which is called whenever the elink prefix * property in the dataset access property list is * decoded. * * Return: Success: Non-negative * Failure: Negative * * Programmer: Mohamad Chaarawi * Monday, October 10, 2011 * *------------------------------------------------------------------------- */ static herr_t H5P_lacc_elink_pref_dec(const void **_pp, void *_value) { char **elink_pref = (char **)_value; const uint8_t **pp = (const uint8_t **)_pp; size_t len; uint64_t enc_value; /* Decoded property value */ unsigned enc_size; /* Size of encoded property */ herr_t ret_value = SUCCEED; FUNC_ENTER_NOAPI_NOINIT HDassert(pp); HDassert(*pp); HDassert(elink_pref); HDcompile_assert(sizeof(size_t) <= sizeof(uint64_t)); /* Decode the size */ enc_size = *(*pp)++; HDassert(enc_size < 256); /* Decode the value */ UINT64DECODE_VAR(*pp, enc_value, enc_size); len = enc_value; if(0 != len) { /* Make a copy of the user's prefix string */ if(NULL == (*elink_pref = (char *)H5MM_malloc(len + 1))) HGOTO_ERROR(H5E_RESOURCE, H5E_CANTINIT, FAIL, "memory allocation failed for prefix") HDstrncpy(*elink_pref, *(const char **)pp, len); (*elink_pref)[len] = '\0'; *pp += len; } /* end if */ else *elink_pref = NULL; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5P_lacc_elink_pref_dec() */ /*------------------------------------------------------------------------- * Function: H5P_lacc_elink_pref_del * * Purpose: Frees memory used to store the external link prefix string * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * November 2, 2006 * *------------------------------------------------------------------------- */ /* ARGSUSED */ static herr_t H5P_lacc_elink_pref_del(hid_t UNUSED prop_id, const char UNUSED *name, size_t UNUSED size, void *value) { FUNC_ENTER_NOAPI_NOINIT_NOERR HDassert(value); H5MM_xfree(*(void **)value); FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5P_lacc_elink_pref_del() */ /*------------------------------------------------------------------------- * Function: H5P_lacc_elink_pref_copy * * Purpose: Creates a copy of the external link prefix string * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * November 2, 2006 * *------------------------------------------------------------------------- */ /* ARGSUSED */ static herr_t H5P_lacc_elink_pref_copy(const char UNUSED *name, size_t UNUSED size, void *value) { FUNC_ENTER_NOAPI_NOINIT_NOERR HDassert(value); *(char **)value = H5MM_xstrdup(*(const char **)value); FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5P_lacc_elink_pref_copy() */ /*------------------------------------------------------------------------- * Function: H5P_lacc_elink_pref_cmp * * Purpose: Callback routine which is called whenever the elink prefix * property in the dataset creation property list is * compared. * * Return: zero if VALUE1 and VALUE2 are equal, non zero otherwise. * * Programmer: Mohamad Chaarawi * Thursday, November 3, 2011 * *------------------------------------------------------------------------- */ static int H5P_lacc_elink_pref_cmp(const void *value1, const void *value2, size_t UNUSED size) { const char *pref1 = *(const char * const *)value1; const char *pref2 = *(const char * const *)value2; int ret_value = 0; FUNC_ENTER_NOAPI_NOINIT_NOERR if(NULL == pref1 && NULL != pref2) HGOTO_DONE(1); if(NULL != pref1 && NULL == pref2) HGOTO_DONE(-1); if(NULL != pref1 && NULL != pref2) ret_value = HDstrcmp(pref1, pref2); done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5P_lacc_elink_pref_cmp() */ /*------------------------------------------------------------------------- * Function: H5P_lacc_elink_pref_close * * Purpose: Frees memory used to store the external link prefix string * * Return: Non-negative on success/Negative on failure * * Programmer: Quincey Koziol * November 2, 2006 * *------------------------------------------------------------------------- */ /* ARGSUSED */ static herr_t H5P_lacc_elink_pref_close(const char UNUSED *name, size_t UNUSED size, void *value) { FUNC_ENTER_NOAPI_NOINIT_NOERR HDassert(value); H5MM_xfree(*(void **)value); FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5P_lacc_elink_pref_close() */ /*------------------------------------------------------------------------- * Function: H5Pset_nlinks * * Purpose: Set the number of soft or UD link traversals allowed before * the library assumes it has found a cycle and aborts the * traversal. * * The limit on soft or UD link traversals is designed to * terminate link traversal if one or more links form a cycle. * However, users may have a file with a legitimate path * formed of a large number of soft or user-defined links. * This property can be used to allow traversal of as many * links as desired. * * Return: Non-negative on success/Negative on failure * * Programmer: James Laird * Friday, July 14, 2006 * *------------------------------------------------------------------------- */ herr_t H5Pset_nlinks(hid_t plist_id, size_t nlinks) { H5P_genplist_t *plist; /* Property list pointer */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE2("e", "iz", plist_id, nlinks); if(nlinks <= 0) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "number of links must be positive"); /* Get the plist structure */ if(NULL == (plist = H5P_object_verify(plist_id, H5P_LINK_ACCESS))) HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID") /* Set number of links */ if(H5P_set(plist, H5L_ACS_NLINKS_NAME, &nlinks) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set nlink info") done: FUNC_LEAVE_API(ret_value) } /* end H5Pset_nlinks() */ /*------------------------------------------------------------------------- * Function: H5Pget_nlinks * * Purpose: Gets the number of soft or user-defined links that can be * traversed before a failure occurs. * * Retrieves the current setting for the nlinks property on * the given property list. * * Return: Non-negative on success/Negative on failure * * Programmer: James Laird * Friday, July 14, 2006 * *------------------------------------------------------------------------- */ herr_t H5Pget_nlinks(hid_t plist_id, size_t *nlinks) { H5P_genplist_t *plist; /* Property list pointer */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE2("e", "i*z", plist_id, nlinks); if(!nlinks) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid pointer passed in"); /* Get the plist structure */ if(NULL == (plist = H5P_object_verify(plist_id, H5P_LINK_ACCESS))) HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID") /* Get the current number of links */ if(H5P_get(plist, H5L_ACS_NLINKS_NAME, nlinks) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get number of links") done: FUNC_LEAVE_API(ret_value) } /*------------------------------------------------------------------------- * Function: H5Pset_elink_prefix * * Purpose: Set a prefix to be applied to the path of any external links * traversed. The prefix is appended to the filename stored * in the external link. * * Return: Non-negative on success/Negative on failure * * Programmer: James Laird * Thursday, August 3, 2006 * *------------------------------------------------------------------------- */ herr_t H5Pset_elink_prefix(hid_t plist_id, const char *prefix) { H5P_genplist_t *plist; /* Property list pointer */ char *my_prefix; /* Copy of prefix string */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE2("e", "i*s", plist_id, prefix); /* Get the plist structure */ if(NULL == (plist = H5P_object_verify(plist_id, H5P_LINK_ACCESS))) HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID") /* Get current prefix value */ if(H5P_get(plist, H5L_ACS_ELINK_PREFIX_NAME, &my_prefix) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get prefix info") /* Free existing prefix, if there is one */ H5MM_xfree(my_prefix); /* Make a copy of the user's prefix string */ if(NULL == (my_prefix = H5MM_xstrdup(prefix))) HGOTO_ERROR(H5E_PLIST, H5E_CANTCOPY, FAIL, "can't copy prefix") /* Set prefix */ if(H5P_set(plist, H5L_ACS_ELINK_PREFIX_NAME, &my_prefix) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set prefix info") done: FUNC_LEAVE_API(ret_value) } /* end H5Pset_elink_prefix() */ /*------------------------------------------------------------------------- * Function: H5Pget_elink_prefix * * Purpose: Gets the prefix to be applied to any external link * traversals made using this property list. * * If the pointer is not NULL, it points to a user-allocated * buffer. * * Return: Non-negative on success/Negative on failure * * Programmer: James Laird * Thursday, August 3, 2006 * *------------------------------------------------------------------------- */ ssize_t H5Pget_elink_prefix(hid_t plist_id, char *prefix, size_t size) { H5P_genplist_t *plist; /* Property list pointer */ char *my_prefix; /* Library's copy of the prefix */ size_t len; /* Length of prefix string */ ssize_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE3("Zs", "i*sz", plist_id, prefix, size); /* Get the plist structure */ if(NULL == (plist = H5P_object_verify(plist_id, H5P_LINK_ACCESS))) HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID") /* Get the current prefix */ if(H5P_get(plist, H5L_ACS_ELINK_PREFIX_NAME, &my_prefix) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get external link prefix") /* Check for prefix being set */ if(my_prefix) { /* Copy to user's buffer, if given */ len = HDstrlen(my_prefix); if(prefix) { HDstrncpy(prefix, my_prefix, MIN(len + 1, size)); if(len >= size) prefix[size - 1] = '\0'; } /* end if */ } /* end if */ else len = 0; /* Set return value */ ret_value = (ssize_t)len; done: FUNC_LEAVE_API(ret_value) } /* end H5Pget_elink_prefix() */ /*------------------------------------------------------------------------- * Function: H5Pset_elink_fapl * * Purpose: Sets the file access property list for link access * * Return: Non-negative on success/Negative on failure * * Programmer: * Vailin Choi; Tuesday, September 12th, 2008 * *------------------------------------------------------------------------- */ herr_t H5Pset_elink_fapl(hid_t lapl_id, hid_t fapl_id) { H5P_genplist_t *plist, *fapl_plist; /* Property list pointer */ hid_t l_fapl_id, new_fapl_id; herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE2("e", "ii", lapl_id, fapl_id); /* Check arguments */ if(NULL == (plist = H5P_object_verify(lapl_id, H5P_LINK_ACCESS))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a link access property list"); /* Get the current file access property list for the link access */ if(H5P_get(plist, H5L_ACS_ELINK_FAPL_NAME, &l_fapl_id) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get fapl") /* Close the current file access property list if set */ if((l_fapl_id > H5P_DEFAULT) && (H5I_dec_ref(l_fapl_id) < 0)) HGOTO_ERROR(H5E_PLIST, H5E_CANTRELEASE, FAIL, "unable to close atom for file access property list") if(NULL == (fapl_plist = H5P_object_verify(fapl_id, H5P_FILE_ACCESS))) HGOTO_ERROR(H5E_PLIST, H5E_BADTYPE, FAIL, "not a file access property list"); /* Make a copy of the property list for FAPL_ID */ if((new_fapl_id = H5P_copy_plist(fapl_plist, FALSE)) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTINIT, FAIL, "unable to copy file access properties") /* Set the file access property list for the link access */ if(H5P_set(plist, H5L_ACS_ELINK_FAPL_NAME, &new_fapl_id) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set fapl for link") done: FUNC_LEAVE_API(ret_value) } /* end H5Pset_elink_fapl() */ /*------------------------------------------------------------------------- * Function: H5Pget_elink_fapl * * Purpose: Gets the file access property list identifier that is * set for link access property. * * Return: Non-negative on success/Negative on failure * * Programmer: * Vailin Choi; Tuesday, September 12th, 2008 * *------------------------------------------------------------------------- */ hid_t H5Pget_elink_fapl(hid_t lapl_id) { H5P_genplist_t *plist, *fapl_plist; /* Property list pointer */ hid_t l_fapl_id; hid_t ret_value=FAIL; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE1("i", "i", lapl_id); /* Get the plist structure */ if(NULL == (plist = H5P_object_verify(lapl_id, H5P_LINK_ACCESS))) HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID") if(H5P_get(plist, H5L_ACS_ELINK_FAPL_NAME, &l_fapl_id) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get fapl for links") if(l_fapl_id > H5P_DEFAULT) { if(NULL==(fapl_plist = H5P_object_verify(l_fapl_id, H5P_FILE_ACCESS))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a file access property list"); if((ret_value = H5P_copy_plist(fapl_plist, TRUE)) < 0) HGOTO_ERROR(H5E_INTERNAL, H5E_CANTINIT, FAIL, "unable to copy file access properties") } else ret_value = l_fapl_id; done: FUNC_LEAVE_API(ret_value); } /* end H5Pget_elink_fapl() */ /*------------------------------------------------------------------------- * Function: H5Pset_elink_acc_flags * * Purpose: Sets the file access flags to be used when traversing an * external link. This should be either H5F_ACC_RDONLY or * H5F_ACC_RDWR, or H5F_ACC_DEFAULT to unset the value. * * Return: Non-negative on success/Negative on failure * * Programmer: Neil Fortner * Tuesday, December 9, 2008 * *------------------------------------------------------------------------- */ herr_t H5Pset_elink_acc_flags(hid_t lapl_id, unsigned flags) { H5P_genplist_t *plist; /* Property list pointer */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE2("e", "iIu", lapl_id, flags); /* Check that flags are valid */ if((flags != H5F_ACC_RDWR) && (flags != H5F_ACC_RDONLY) && (flags != H5F_ACC_DEFAULT)) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid file open flags") /* Get the plist structure */ if(NULL == (plist = H5P_object_verify(lapl_id, H5P_LINK_ACCESS))) HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID") /* Set flags */ if(H5P_set(plist, H5L_ACS_ELINK_FLAGS_NAME, &flags) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set access flags") done: FUNC_LEAVE_API(ret_value) } /* end H5Pset_elink_acc_flags() */ /*------------------------------------------------------------------------- * Function: H5Pget_elink_acc_flags * * Purpose: Gets the file access flags to be used when traversing an * external link. * * Return: Non-negative on success/Negative on failure * * Programmer: Neil Fortner * Tuesday, December 9, 2008 * *------------------------------------------------------------------------- */ herr_t H5Pget_elink_acc_flags(hid_t lapl_id, unsigned *flags) { H5P_genplist_t *plist; /* Property list pointer */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE2("e", "i*Iu", lapl_id, flags); /* Get the plist structure */ if(NULL == (plist = H5P_object_verify(lapl_id, H5P_LINK_ACCESS))) HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID") /* Get flags */ if (flags) if(H5P_get(plist, H5L_ACS_ELINK_FLAGS_NAME, flags)<0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, 0, "can't get access flags") done: FUNC_LEAVE_API(ret_value) } /* end H5Pget_elink_acc_flags() */ /*------------------------------------------------------------------------- * Function: H5Pset_elink_cb * * Purpose: Sets the file access flags to be used when traversing an * external link. This should be either H5F_ACC_RDONLY or * H5F_ACC_RDWR. * * Return: Non-negative on success/Negative on failure * * Programmer: Neil Fortner * Tuesday, December 15, 2008 * *------------------------------------------------------------------------- */ herr_t H5Pset_elink_cb(hid_t lapl_id, H5L_elink_traverse_t func, void *op_data) { H5P_genplist_t *plist; /* Property list pointer */ H5L_elink_cb_t cb_info; /* Callback info struct */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE3("e", "ix*x", lapl_id, func, op_data); /* Check if the callback function is NULL and the user data is non-NULL. * This is almost certainly an error as the user data will not be used. */ if(!func && op_data) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "callback is NULL while user data is not") /* Get the plist structure */ if(NULL == (plist = H5P_object_verify(lapl_id, H5P_LINK_ACCESS))) HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID") /* Populate the callback info struct */ cb_info.func = func; cb_info.user_data = op_data; /* Set callback info */ if(H5P_set(plist, H5L_ACS_ELINK_CB_NAME, &cb_info) < 0) HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set callback info") done: FUNC_LEAVE_API(ret_value) } /* end H5Pset_elink_acc_flags() */ /*------------------------------------------------------------------------- * Function: H5Pget_elink_cb * * Purpose: Gets the file access flags to be used when traversing an * external link. * * Return: Non-negative on success/Negative on failure * * Programmer: Neil Fortner * Tuesday, December 15, 2008 * *------------------------------------------------------------------------- */ herr_t H5Pget_elink_cb(hid_t lapl_id, H5L_elink_traverse_t *func, void **op_data) { H5P_genplist_t *plist; /* Property list pointer */ H5L_elink_cb_t cb_info; /* Callback info struct */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE3("e", "i*x**x", lapl_id, func, op_data); /* Get the plist structure */ if(NULL == (plist = H5P_object_verify(lapl_id, H5P_LINK_ACCESS))) HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID") /* Get callback_info */ if(H5P_get(plist, H5L_ACS_ELINK_CB_NAME, &cb_info)<0) HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get callback info") if(func) *func = cb_info.func; if(op_data) *op_data = cb_info.user_data; done: FUNC_LEAVE_API(ret_value) } /* end H5Pget_elink_cb() */