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37 * Stores functions and path defines for files and directories
38 * on the filesystem for Linux, that are used by the Linux EAL.
41 #ifndef _EAL_LINUXAPP_FILESYSTEM_H
42 #define _EAL_LINUXAPP_FILESYSTEM_H
44 /** Path of rte config file. */
45 #define RUNTIME_CONFIG_FMT "%s/.%s_config"
50 #include <rte_string_fns.h>
51 #include "eal_internal_cfg.h"
53 static const char *default_config_dir = "/var/run";
55 static inline const char *
56 eal_runtime_config_path(void)
58 static char buffer[PATH_MAX]; /* static so auto-zeroed */
59 const char *directory = default_config_dir;
60 const char *home_dir = getenv("HOME");
62 if (getuid() != 0 && home_dir != NULL)
64 rte_snprintf(buffer, sizeof(buffer) - 1, RUNTIME_CONFIG_FMT, directory,
65 internal_config.hugefile_prefix);
69 /** Path of hugepage info file. */
70 #define HUGEPAGE_INFO_FMT "%s/.%s_hugepage_info"
72 static inline const char *
73 eal_hugepage_info_path(void)
75 static char buffer[PATH_MAX]; /* static so auto-zeroed */
76 const char *directory = default_config_dir;
77 const char *home_dir = getenv("HOME");
79 if (getuid() != 0 && home_dir != NULL)
81 rte_snprintf(buffer, sizeof(buffer) - 1, HUGEPAGE_INFO_FMT, directory,
82 internal_config.hugefile_prefix);
86 /** String format for hugepage map files. */
87 #define HUGEFILE_FMT "%s/%smap_%d"
89 static inline const char *
90 eal_get_hugefile_path(char *buffer, size_t buflen, const char *hugedir, int f_id)
92 rte_snprintf(buffer, buflen, HUGEFILE_FMT, hugedir,
93 internal_config.hugefile_prefix, f_id);
94 buffer[buflen - 1] = '\0';
98 /** define the default filename prefix for the %s values above */
99 #define HUGEFILE_PREFIX_DEFAULT "rte"
101 /** Function to read a single numeric value from a file on the filesystem.
102 * Used to read information from files on /sys */
103 int eal_parse_sysfs_value(const char *filename, unsigned long *val);
105 #endif /* _EAL_LINUXAPP_FILESYSTEM_H */