33e25b3394
Some guards are missing or have a wrong name. Others have LINUXAPP in their name but are now common. Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com> Acked-by: Bruce Richardson <bruce.richardson@intel.com>
119 lines
3.9 KiB
C
119 lines
3.9 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* Stores functions and path defines for files and directories
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* on the filesystem for Linux, that are used by the Linux EAL.
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*/
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#ifndef EAL_FILESYSTEM_H
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#define EAL_FILESYSTEM_H
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/** Path of rte config file. */
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#define RUNTIME_CONFIG_FMT "%s/.%s_config"
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#include <stdint.h>
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#include <limits.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <rte_string_fns.h>
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#include "eal_internal_cfg.h"
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static const char *default_config_dir = "/var/run";
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static inline const char *
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eal_runtime_config_path(void)
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{
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static char buffer[PATH_MAX]; /* static so auto-zeroed */
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const char *directory = default_config_dir;
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const char *home_dir = getenv("HOME");
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if (getuid() != 0 && home_dir != NULL)
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directory = home_dir;
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snprintf(buffer, sizeof(buffer) - 1, RUNTIME_CONFIG_FMT, directory,
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internal_config.hugefile_prefix);
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return buffer;
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}
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/** Path of hugepage info file. */
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#define HUGEPAGE_INFO_FMT "%s/.%s_hugepage_info"
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static inline const char *
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eal_hugepage_info_path(void)
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{
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static char buffer[PATH_MAX]; /* static so auto-zeroed */
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const char *directory = default_config_dir;
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const char *home_dir = getenv("HOME");
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if (getuid() != 0 && home_dir != NULL)
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directory = home_dir;
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snprintf(buffer, sizeof(buffer) - 1, HUGEPAGE_INFO_FMT, directory,
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internal_config.hugefile_prefix);
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return buffer;
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}
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/** String format for hugepage map files. */
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#define HUGEFILE_FMT "%s/%smap_%d"
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#define TEMP_HUGEFILE_FMT "%s/%smap_temp_%d"
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static inline const char *
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eal_get_hugefile_path(char *buffer, size_t buflen, const char *hugedir, int f_id)
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{
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snprintf(buffer, buflen, HUGEFILE_FMT, hugedir,
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internal_config.hugefile_prefix, f_id);
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buffer[buflen - 1] = '\0';
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return buffer;
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}
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#ifdef RTE_EAL_SINGLE_FILE_SEGMENTS
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static inline const char *
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eal_get_hugefile_temp_path(char *buffer, size_t buflen, const char *hugedir, int f_id)
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{
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snprintf(buffer, buflen, TEMP_HUGEFILE_FMT, hugedir,
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internal_config.hugefile_prefix, f_id);
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buffer[buflen - 1] = '\0';
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return buffer;
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}
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#endif
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/** define the default filename prefix for the %s values above */
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#define HUGEFILE_PREFIX_DEFAULT "rte"
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/** Function to read a single numeric value from a file on the filesystem.
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* Used to read information from files on /sys */
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int eal_parse_sysfs_value(const char *filename, unsigned long *val);
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#endif /* EAL_FILESYSTEM_H */
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