f4be6a9a29
snprintf guarantees to always correctly place a null terminator in the buffer string. So manually placing a null terminator in a buffer right after a call to snprintf is redundant code. Additionally, there is no need to use 'sizeof(buffer) - 1' in snprintf as this means we are not using the last character in the buffer. 'sizeof(buffer)' is enough. Cc: stable@dpdk.org Signed-off-by: Michael Santana <msantana@redhat.com> Acked-by: Bruce Richardson <bruce.richardson@intel.com> Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
|
|
* Copyright(c) 2010-2018 Intel Corporation
|
|
*/
|
|
|
|
/**
|
|
* @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. */
|
|
|
|
#include <stdint.h>
|
|
#include <limits.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <rte_string_fns.h>
|
|
#include "eal_internal_cfg.h"
|
|
|
|
/* sets up platform-specific runtime data dir */
|
|
int
|
|
eal_create_runtime_dir(void);
|
|
|
|
int
|
|
eal_clean_runtime_dir(void);
|
|
|
|
/** Function to return hugefile prefix that's currently set up */
|
|
const char *
|
|
eal_get_hugefile_prefix(void);
|
|
|
|
#define RUNTIME_CONFIG_FNAME "config"
|
|
static inline const char *
|
|
eal_runtime_config_path(void)
|
|
{
|
|
static char buffer[PATH_MAX]; /* static so auto-zeroed */
|
|
|
|
snprintf(buffer, sizeof(buffer), "%s/%s", rte_eal_get_runtime_dir(),
|
|
RUNTIME_CONFIG_FNAME);
|
|
return buffer;
|
|
}
|
|
|
|
/** Path of primary/secondary communication unix socket file. */
|
|
#define MP_SOCKET_FNAME "mp_socket"
|
|
static inline const char *
|
|
eal_mp_socket_path(void)
|
|
{
|
|
static char buffer[PATH_MAX]; /* static so auto-zeroed */
|
|
|
|
snprintf(buffer, sizeof(buffer), "%s/%s", rte_eal_get_runtime_dir(),
|
|
MP_SOCKET_FNAME);
|
|
return buffer;
|
|
}
|
|
|
|
#define FBARRAY_NAME_FMT "%s/fbarray_%s"
|
|
static inline const char *
|
|
eal_get_fbarray_path(char *buffer, size_t buflen, const char *name) {
|
|
snprintf(buffer, buflen, FBARRAY_NAME_FMT, rte_eal_get_runtime_dir(),
|
|
name);
|
|
return buffer;
|
|
}
|
|
|
|
/** Path of hugepage info file. */
|
|
#define HUGEPAGE_INFO_FNAME "hugepage_info"
|
|
static inline const char *
|
|
eal_hugepage_info_path(void)
|
|
{
|
|
static char buffer[PATH_MAX]; /* static so auto-zeroed */
|
|
|
|
snprintf(buffer, sizeof(buffer), "%s/%s", rte_eal_get_runtime_dir(),
|
|
HUGEPAGE_INFO_FNAME);
|
|
return buffer;
|
|
}
|
|
|
|
/** Path of hugepage data file. */
|
|
#define HUGEPAGE_DATA_FNAME "hugepage_data"
|
|
static inline const char *
|
|
eal_hugepage_data_path(void)
|
|
{
|
|
static char buffer[PATH_MAX]; /* static so auto-zeroed */
|
|
|
|
snprintf(buffer, sizeof(buffer), "%s/%s", rte_eal_get_runtime_dir(),
|
|
HUGEPAGE_DATA_FNAME);
|
|
return buffer;
|
|
}
|
|
|
|
/** String format for hugepage map files. */
|
|
#define HUGEFILE_FMT "%s/%smap_%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,
|
|
eal_get_hugefile_prefix(), f_id);
|
|
return buffer;
|
|
}
|
|
|
|
/** 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 */
|