eal: add shared indexed file-backed array

[dpdk.git] / 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
index 4708dd5..1c6048b 100644 (file)
--- a/lib/librte_eal/common/eal_filesystem.h
+++ b/lib/librte_eal/common/eal_filesystem.h
@@ -13,6 +13,7 @@
 
 /** Path of rte config file. */
 #define RUNTIME_CONFIG_FMT "%s/.%s_config"
+#define FBARRAY_FMT "%s/%s_%s"
 
 #include <stdint.h>
 #include <limits.h>
@@ -55,6 +56,18 @@ eal_mp_socket_path(void)
        return buffer;
 }
 
+static inline const char *
+eal_get_fbarray_path(char *buffer, size_t buflen, const char *name) {
+       const char *directory = "/tmp";
+       const char *home_dir = getenv("HOME");
+
+       if (getuid() != 0 && home_dir != NULL)
+               directory = home_dir;
+       snprintf(buffer, buflen - 1, FBARRAY_FMT, directory,
+                       internal_config.hugefile_prefix, name);
+       return buffer;
+}
+
 /** Path of hugepage info file. */
 #define HUGEPAGE_INFO_FMT "%s/.%s_hugepage_info"