From 97f17497d162afdb82c8704bf097f0fee3724b2e Mon Sep 17 00:00:00 2001 From: "C.J. Collier" Date: Tue, 14 Jun 2016 07:50:17 -0700 Subject: Imported Upstream version 16.04 Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757 Signed-off-by: C.J. Collier --- lib/librte_eal/common/eal_filesystem.h | 118 +++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 lib/librte_eal/common/eal_filesystem.h (limited to 'lib/librte_eal/common/eal_filesystem.h') diff --git a/lib/librte_eal/common/eal_filesystem.h b/lib/librte_eal/common/eal_filesystem.h new file mode 100644 index 00000000..fdb4a70b --- /dev/null +++ b/lib/librte_eal/common/eal_filesystem.h @@ -0,0 +1,118 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * @file + * Stores functions and path defines for files and directories + * on the filesystem for Linux, that are used by the Linux EAL. + */ + +#ifndef EAL_FILESYSTEM_H +#define EAL_FILESYSTEM_H + +/** Path of rte config file. */ +#define RUNTIME_CONFIG_FMT "%s/.%s_config" + +#include +#include +#include +#include + +#include +#include "eal_internal_cfg.h" + +static const char *default_config_dir = "/var/run"; + +static inline const char * +eal_runtime_config_path(void) +{ + static char buffer[PATH_MAX]; /* static so auto-zeroed */ + const char *directory = default_config_dir; + const char *home_dir = getenv("HOME"); + + if (getuid() != 0 && home_dir != NULL) + directory = home_dir; + snprintf(buffer, sizeof(buffer) - 1, RUNTIME_CONFIG_FMT, directory, + internal_config.hugefile_prefix); + return buffer; +} + +/** Path of hugepage info file. */ +#define HUGEPAGE_INFO_FMT "%s/.%s_hugepage_info" + +static inline const char * +eal_hugepage_info_path(void) +{ + static char buffer[PATH_MAX]; /* static so auto-zeroed */ + const char *directory = default_config_dir; + const char *home_dir = getenv("HOME"); + + if (getuid() != 0 && home_dir != NULL) + directory = home_dir; + snprintf(buffer, sizeof(buffer) - 1, HUGEPAGE_INFO_FMT, directory, + internal_config.hugefile_prefix); + return buffer; +} + +/** String format for hugepage map files. */ +#define HUGEFILE_FMT "%s/%smap_%d" +#define TEMP_HUGEFILE_FMT "%s/%smap_temp_%d" + +static inline const char * +eal_get_hugefile_path(char *buffer, size_t buflen, const char *hugedir, int f_id) +{ + snprintf(buffer, buflen, HUGEFILE_FMT, hugedir, + internal_config.hugefile_prefix, f_id); + buffer[buflen - 1] = '\0'; + return buffer; +} + +#ifdef RTE_EAL_SINGLE_FILE_SEGMENTS +static inline const char * +eal_get_hugefile_temp_path(char *buffer, size_t buflen, const char *hugedir, int f_id) +{ + snprintf(buffer, buflen, TEMP_HUGEFILE_FMT, hugedir, + internal_config.hugefile_prefix, f_id); + buffer[buflen - 1] = '\0'; + return buffer; +} +#endif + +/** define the default filename prefix for the %s values above */ +#define HUGEFILE_PREFIX_DEFAULT "rte" + +/** Function to read a single numeric value from a file on the filesystem. + * Used to read information from files on /sys */ +int eal_parse_sysfs_value(const char *filename, unsigned long *val); + +#endif /* EAL_FILESYSTEM_H */ -- cgit 1.2.3-korg