diff options
Diffstat (limited to 'src/H5FDonion.c')
| -rw-r--r-- | src/H5FDonion.c | 50 |
1 files changed, 33 insertions, 17 deletions
diff --git a/src/H5FDonion.c b/src/H5FDonion.c index 3270b82..da06168 100644 --- a/src/H5FDonion.c +++ b/src/H5FDonion.c @@ -354,60 +354,76 @@ done: FUNC_LEAVE_API(ret_value) } /* end H5Pset_fapl_onion() */ +/*------------------------------------------------------------------------- + * Function: H5FDget_onion_revision_count + * + * Purpose: Get the number of revisions in an onion file + * + * Return: SUCCEED/FAIL + *------------------------------------------------------------------------- + */ herr_t -H5FDonion_get_revision_count(const char *filename, hid_t fapl_id, size_t *revision_count) +H5FDonion_get_revision_count(const char *filename, hid_t fapl_id, size_t *revision_count /*out*/) { - H5P_genplist_t *plist = NULL; - herr_t ret_value = SUCCEED; - H5FD_t * file_drv_ptr = NULL; + H5P_genplist_t *plist = NULL; + H5FD_t * file = NULL; + herr_t ret_value = SUCCEED; + FUNC_ENTER_API(FAIL) H5TRACE3("e", "*si*z", filename, fapl_id, revision_count); - /* Check the file name */ + /* Check args */ if (!filename || !HDstrcmp(filename, "")) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a valid file name") + if (!revision_count) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "revision count can't be null") /* Make sure using the correct driver */ if (NULL == (plist = H5P_object_verify(fapl_id, H5P_FILE_ACCESS))) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a valid FAPL ID") - if (H5FD_ONION != H5P_peek_driver(plist)) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "not a Onion VFL driver") - if (!revision_count) - HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "revision count can't be null") - /* Open the file with the driver */ - if (NULL == (file_drv_ptr = H5FD_open(filename, H5F_ACC_RDONLY, fapl_id, HADDR_UNDEF))) + if (NULL == (file = H5FD_open(filename, H5F_ACC_RDONLY, fapl_id, HADDR_UNDEF))) HGOTO_ERROR(H5E_VFL, H5E_CANTOPENFILE, FAIL, "unable to open file with onion driver") /* Call the private function */ - if (H5FD__get_onion_revision_count(file_drv_ptr, revision_count) < 0) + if (H5FD__get_onion_revision_count(file, revision_count) < 0) HGOTO_ERROR(H5E_VFL, H5E_CANTGET, FAIL, "failed to get the number of revisions") +done: /* Close H5FD_t structure pointer */ - if (H5FD_close(file_drv_ptr) < 0) + if (file && H5FD_close(file) < 0) HGOTO_ERROR(H5E_VFL, H5E_CANTCLOSEFILE, FAIL, "unable to close file") - file_drv_ptr = NULL; - -done: FUNC_LEAVE_API(ret_value) } +/*------------------------------------------------------------------------- + * Function: H5FD__get_onion_revision_count + * + * Purpose: Private version of H5FDget_onion_revision_count() + * + * Return: SUCCEED/FAIL + *------------------------------------------------------------------------- + */ static herr_t H5FD__get_onion_revision_count(H5FD_t *file, size_t *revision_count) { - herr_t ret_value = SUCCEED; uint64_t op_code; uint64_t flags; + herr_t ret_value = SUCCEED; FUNC_ENTER_PACKAGE + HDassert(file); + HDassert(revision_count); + op_code = H5FD_CTL__GET_NUM_REVISIONS; flags = H5FD_CTL__FAIL_IF_UNKNOWN_FLAG; - /* Call private function */ + /* Get the number of revisions via the ctl callback */ if (H5FD_ctl(file, op_code, flags, NULL, (void **)&revision_count) < 0) HGOTO_ERROR(H5E_VFL, H5E_FCNTL, FAIL, "VFD ctl request failed") |