diff options
| -rw-r--r-- | src/H5Dvirtual.c | 230 | ||||
| -rw-r--r-- | src/H5system.c | 2 |
2 files changed, 212 insertions, 20 deletions
diff --git a/src/H5Dvirtual.c b/src/H5Dvirtual.c index e0a4a83..4882e9f 100644 --- a/src/H5Dvirtual.c +++ b/src/H5Dvirtual.c @@ -763,6 +763,208 @@ done: FUNC_LEAVE_NOAPI(ret_value) } /* H5D__virtual_build_name() */ + +/*-------------------------------------------------------------------------- + * Function: H5D_getenv_prefix_name -- + * + * Purpose: Get the first pathname in the list of pathnames stored in env_prefix, + * which is separated by the environment delimiter. + * env_prefix is modified to point to the remaining pathnames + * in the list. + * + * Return: A pointer to a pathname +--------------------------------------------------------------------------*/ +static char * +H5D_getenv_prefix_name(char **env_prefix/*in,out*/) +{ + char *retptr=NULL; + char *strret=NULL; + + FUNC_ENTER_NOAPI_NOINIT_NOERR + + strret = HDstrchr(*env_prefix, H5_COLON_SEPC); + if (strret == NULL) { + retptr = *env_prefix; + *env_prefix = strret; + } else { + retptr = *env_prefix; + *env_prefix = strret + 1; + *strret = '\0'; + } + + FUNC_LEAVE_NOAPI(retptr) +} /* end H5D_getenv_prefix_name() */ + +/*------------------------------------------------------------------------- + * Function: H5D__virtual_open_file + * + * Purpose: Attempts to open a source dataset file. + * + * Return: Non-negative on success/Negative on failure + *------------------------------------------------------------------------- + */ +static H5F_t * +H5D__virtual_open_file(H5P_genplist_t *plist, const H5F_t *vdset_file, + const char *file_name, + hid_t fapl_id, hid_t dxpl_id) +{ + H5F_t *src_file = NULL; /* Source file */ + H5F_t *ret_value = NULL; /* Actual return value */ + char *full_name = NULL; /* File name with prefix */ + char *my_prefix; /* Library's copy of the prefix */ + unsigned intent; /* File access permissions */ + char *actual_file_name = NULL; /* Virtual file's actual name */ + char *temp_file_name = NULL; /* Temporary pointer to file name */ + size_t temp_file_name_len; /* Length of temporary file name */ + + FUNC_ENTER_STATIC + + /* Simplify intent flags for open calls */ + intent = H5F_INTENT(vdset_file); + intent &= (H5F_ACC_RDWR | H5F_ACC_SWMR_WRITE | H5F_ACC_SWMR_READ); + + /* Copy the file name to use */ + if(NULL == (temp_file_name = H5MM_strdup(file_name))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") + temp_file_name_len = HDstrlen(temp_file_name); + + /* target file_name is an absolute pathname: see RM for detailed description */ + if(H5_CHECK_ABSOLUTE(file_name) || H5_CHECK_ABS_PATH(file_name)) { + /* Try opening file */ + if(NULL == (src_file = H5F_open(file_name, intent, H5P_FILE_CREATE_DEFAULT, fapl_id, dxpl_id))) { + char *ptr; + + H5E_clear_stack(NULL); + + /* get last component of file_name */ + H5_GET_LAST_DELIMITER(file_name, ptr) + HDassert(ptr); + + /* Increment past delimiter */ + ptr++; + + /* Copy into the temp. file name */ + HDstrncpy(temp_file_name, ptr, temp_file_name_len); + temp_file_name[temp_file_name_len - 1] = '\0'; + } /* end if */ + } /* end if */ + else if(H5_CHECK_ABS_DRIVE(file_name)) { + /* Try opening file */ + if(NULL == (src_file = H5F_open(file_name, intent, H5P_FILE_CREATE_DEFAULT, fapl_id, dxpl_id))) { + + H5E_clear_stack(NULL); + + /* strip "<drive-letter>:" */ + HDstrncpy(temp_file_name, &file_name[2], temp_file_name_len); + temp_file_name[temp_file_name_len - 1] = '\0'; + } /* end if */ + } /* end if */ + + /* try searching from paths set in the environment variable */ + if(src_file == NULL) { + char *env_prefix; + + if(NULL != (env_prefix = HDgetenv("HDF5_VDS_PREFIX"))) { + char *tmp_env_prefix, *saved_env; + + if(NULL == (saved_env = tmp_env_prefix = H5MM_strdup(env_prefix))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") + + while((tmp_env_prefix) && (*tmp_env_prefix)) { + char *out_prefix_name; + + out_prefix_name = H5D_getenv_prefix_name(&tmp_env_prefix/*in,out*/); + if(out_prefix_name && (*out_prefix_name)) { + if(H5D__virtual_build_name(out_prefix_name, temp_file_name, &full_name/*out*/) < 0) { + saved_env = (char *)H5MM_xfree(saved_env); + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, NULL, "can't prepend prefix to filename") + } /* end if */ + + src_file = H5F_open(full_name, intent, H5P_FILE_CREATE_DEFAULT, fapl_id, dxpl_id); + full_name = (char *)H5MM_xfree(full_name); + if(src_file != NULL) + break; + H5E_clear_stack(NULL); + } /* end if */ + } /* end while */ + saved_env = (char *)H5MM_xfree(saved_env); + } /* end if */ + } /* end if */ + + /* try searching from property list */ + if(src_file == NULL) { + size_t size = 0; + if((size = H5Pget_virtual_prefix(plist, NULL, 0)) < 0) + HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get vds prefix") + /* Allocate a buffer to hold the filename + prefix + possibly the delimiter + terminating null byte */ + if(NULL == (my_prefix = (char *)H5MM_malloc(size + 1))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "unable to allocate prefix buffer") + if(H5Pget_virtual_prefix(plist, my_prefix, size+1) < 0) + HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, NULL, "can't get vds prefix") + if(my_prefix) { + if(H5D__virtual_build_name(my_prefix, temp_file_name, &full_name/*out*/) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, NULL, "can't prepend prefix to filename") + if(NULL == (src_file = H5F_open(full_name, intent, H5P_FILE_CREATE_DEFAULT, fapl_id, dxpl_id))) + H5E_clear_stack(NULL); + full_name = (char *)H5MM_xfree(full_name); + } /* end if */ + } /* end if */ + + /* try searching from main file's "extpath": see description in H5F_open() & H5_build_extpath() */ + if(src_file == NULL) { + char *vdspath; + + if(NULL != (vdspath = H5F_EXTPATH(vdset_file))) { + if(H5D__virtual_build_name(vdspath, temp_file_name, &full_name/*out*/) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, NULL, "can't prepend prefix to filename") + if(NULL == (src_file = H5F_open(full_name, intent, H5P_FILE_CREATE_DEFAULT, fapl_id, dxpl_id))) + H5E_clear_stack(NULL); + full_name = (char *)H5MM_xfree(full_name); + } /* end if */ + } /* end if */ + + /* try the relative file_name stored in temp_file_name */ + if(src_file == NULL) { + if(NULL == (src_file = H5F_open(temp_file_name, intent, H5P_FILE_CREATE_DEFAULT, fapl_id, dxpl_id))) + H5E_clear_stack(NULL); + } /* end if */ + + /* try the 'resolved' name for the virtual file */ + if(src_file == NULL) { + char *ptr = NULL; + + /* Copy resolved file name */ + if(NULL == (actual_file_name = H5MM_strdup(H5F_ACTUAL_NAME(vdset_file)))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTALLOC, NULL, "can't duplicate resolved file name string") + + /* get last component of file_name */ + H5_GET_LAST_DELIMITER(actual_file_name, ptr) + if(!ptr) + HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENFILE, NULL, "unable to open vds file, vds file name = '%s', temp_file_name = '%s'", file_name, temp_file_name) + + /* Truncate filename portion from actual file name path */ + *ptr = '\0'; + + /* Build new file name for the external file */ + if(H5D__virtual_build_name(actual_file_name, temp_file_name, &full_name/*out*/) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, NULL, "can't prepend prefix to filename") + + /* Try opening with the resolved name */ + if(NULL == (src_file = H5F_open(full_name, intent, H5P_FILE_CREATE_DEFAULT, fapl_id, dxpl_id))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENFILE, NULL, "unable to open vds file, vds file name = '%s', temp_file_name = '%s'", file_name, temp_file_name) + full_name = (char *)H5MM_xfree(full_name); + } /* end if */ + + /* Success */ + ret_value = src_file; +done: + if((NULL == ret_value) && src_file) + if(H5F_try_close(src_file, NULL) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CANTCLOSEFILE, FAIL, "can't close source file") + + FUNC_LEAVE_NOAPI(ret_value) +} /* H5D__virtual_open_file() */ + /*------------------------------------------------------------------------- * Function: H5D__virtual_open_source_dset @@ -787,6 +989,8 @@ H5D__virtual_open_source_dset(const H5D_t *vdset, H5G_loc_t src_root_loc; /* Object location of source file root group */ herr_t ret_value = SUCCEED; /* Return value */ char *full_name = NULL; /* File name with prefix */ + unsigned intent; /* File access permissions */ + H5P_genplist_t *plist; /* Property list pointer */ FUNC_ENTER_STATIC @@ -796,27 +1000,15 @@ H5D__virtual_open_source_dset(const H5D_t *vdset, HDassert(!source_dset->dset); HDassert(source_dset->file_name); HDassert(source_dset->dset_name); - vds_prefix = vdset->shared->vds_prefix; /* Check if we need to open the source file */ if(HDstrcmp(source_dset->file_name, ".")) { - if(vds_prefix && HDstrlen(vds_prefix) > 0) { - if(H5D__virtual_build_name(vds_prefix, source_dset->file_name, &full_name/*out*/) < 0) - HGOTO_ERROR(H5E_LINK, H5E_CANTGET, FAIL, "can't prepend prefix to filename") - /* Open the source file */ - if(NULL == (src_file = H5F_open(full_name, H5F_INTENT(vdset->oloc.file) & (H5F_ACC_RDWR | H5F_ACC_SWMR_WRITE | H5F_ACC_SWMR_READ), H5P_FILE_CREATE_DEFAULT, vdset->shared->layout.storage.u.virt.source_fapl, dxpl_id))) - H5E_clear_stack(NULL); /* Quick hack until proper support for H5Fopen with missing file is implemented */ - else - src_file_open = TRUE; - full_name = (char *)H5MM_xfree(full_name); - } - else { - /* Open the source file */ - if(NULL == (src_file = H5F_open(source_dset->file_name, H5F_INTENT(vdset->oloc.file) & (H5F_ACC_RDWR | H5F_ACC_SWMR_WRITE | H5F_ACC_SWMR_READ), H5P_FILE_CREATE_DEFAULT, vdset->shared->layout.storage.u.virt.source_fapl, dxpl_id))) - H5E_clear_stack(NULL); /* Quick hack until proper support for H5Fopen with missing file is implemented */ - else - src_file_open = TRUE; - } + if((plist = H5D_get_access_plist(vdset)) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTGET, FAIL, "Can't get access plist") + if(NULL == (src_file = H5D__virtual_open_file(plist, vdset->oloc.file, source_dset->file_name, vdset->shared->layout.storage.u.virt.source_fapl, dxpl_id))) + H5E_clear_stack(NULL); /* Quick hack until proper support for H5Fopen with missing file is implemented */ + else + src_file_open = TRUE; } /* end if */ else /* Source file is ".", use the virtual dataset's file */ @@ -2312,7 +2504,7 @@ H5D__virtual_pre_io(H5D_io_info_t *io_info, /* Check if anything is selected */ if(select_nelmts > (hssize_t)0) { /* Open source dataset */ - if(!storage->list[i].source_dset.dset) + if(!storage->list[i].source_dset.dset) /* Try to open dataset */ if(H5D__virtual_open_source_dset(io_info->dset, &storage->list[i], &storage->list[i].source_dset, io_info->md_dxpl_id) < 0) HGOTO_ERROR(H5E_DATASET, H5E_CANTOPENOBJ, FAIL, "unable to open source dataset") diff --git a/src/H5system.c b/src/H5system.c index a8726c2..7b3a0eb 100644 --- a/src/H5system.c +++ b/src/H5system.c @@ -1043,7 +1043,7 @@ H5_build_extpath(const char *name, char **extpath /*out*/) * Unix: does not apply */ if(H5_CHECK_ABS_DRIVE(name)) { - drive = name[0] - 'A' + 1; + drive = toupper(name[0]) - 'A' + 1; retcwd = HDgetdcwd(drive, cwdpath, MAX_PATH_LEN); HDstrncpy(new_name, &name[2], name_len); } /* end if */ |