From 61ae843fb77abd280a78294664996916aa77958d Mon Sep 17 00:00:00 2001
From: haotuo <haotuo@huawei.com>
Date: Tue, 12 Mar 2024 10:12:29 +0800
Subject: [PATCH] Add fdsan interfaces

Signed-off-by: haotuo <haotuo@huawei.com>
Change-Id: I79a0598f8df03feb73f8c9f9203ccfa090485d77
---
 third_party/musl/ndk_musl_include/stdio.h     | 115 ++++++++++++++++++
 .../musl/ndk_script/adapter/libc.ndk.json     |   8 ++
 2 files changed, 123 insertions(+)

diff --git a/third_party/musl/ndk_musl_include/stdio.h b/third_party/musl/ndk_musl_include/stdio.h
index 5c4407e93..f09898cd9 100644
--- a/third_party/musl/ndk_musl_include/stdio.h
+++ b/third_party/musl/ndk_musl_include/stdio.h
@@ -212,6 +212,121 @@ typedef struct _IO_cookie_io_functions_t {
 #define off64_t off_t
 #endif
 
+/**
+ * @brief Enumerates fd owner type.
+ *
+ * @since 12
+ */
+enum fdsan_owner_type {
+	/* Default type value */
+	FDSAN_OWNER_TYPE_DEFAULT = 0,
+	/* Max value */
+	FDSAN_OWNER_TYPE_MAX = 255,
+	/* File */
+	FDSAN_OWNER_TYPE_FILE = 1,
+	/* Directory */
+	FDSAN_OWNER_TYPE_DIRECTORY = 2,
+	/* Unique fd */
+	FDSAN_OWNER_TYPE_UNIQUE_FD = 3,
+	/* Zip archive */
+	FDSAN_OWNER_TYPE_ZIP_ARCHIVE = 4,
+};
+
+/**
+ * @brief Create an owner tag using specified fdsan_owner_type and at least 56 bits tag value.
+ *
+ * @param type: Indicate the specified fdsan_owner_type.
+ * @param tag: Indicate the specified tag value, at least 56 bits, usually specified as sturct address such as FILE*.
+ * @return Return the created tag, which can be used to exchange.
+ * @since 12
+ */
+uint64_t fdsan_create_owner_tag(enum fdsan_owner_type type, uint64_t tag);
+
+/**
+ * @brief Exchange owner tag for specified fd.
+ *
+ * This method will check if param expected_tag is euqal to current owner tag, fdsan error will occur if not.
+ *
+ * @param fd: Specified fd.
+ * @param expected_tag: Used to check if equal to current owner tag.
+ * @param new_tag: Used to exchange the specified fd owner tag.
+ * @since 12
+ */
+void fdsan_exchange_owner_tag(int fd, uint64_t expected_tag, uint64_t new_tag);
+
+/**
+ * @brief Check fd owner tag and close fd.
+ *
+ * This method will check if param tag is euqal to current owner tag, fdsan error will occur if not,
+ * then call syscall to close fd.
+ *
+ * @param fd: Specified fd.
+ * @param tag: Used to check if equal to current owner tag.
+ * @return Return close result, 0 success and -1 if fail.
+ * @since 12
+ */
+int fdsan_close_with_tag(int fd, uint64_t tag);
+
+/**
+ * @brief Get specified fd's owner tag.
+ *
+ * @param fd: Specified fd.
+ * @return Return tag value of specified fd, return 0 if fd is not in fd table.
+ * @since 12
+ */
+uint64_t fdsan_get_owner_tag(int fd);
+
+/**
+ * @brief Get owner fd type
+ *
+ * @param tag: Specified tag, which usually comes from {@link fdsan_get_owner_tag}
+ * @return Return type value of tag, possible value: FILE*, DIR*, unique_fd, ZipArchive, unknown type and so on.
+ * @since 12
+ */
+const char* fdsan_get_tag_type(uint64_t tag);
+
+/**
+ * @brief Get owner fd tag value.
+ *
+ * @param tag: Specified tag, which usually comes from {@link fdsan_get_owner_tag}
+ * @return Return value of tag, last 56 bits are valid.
+ * @since 12
+ */
+uint64_t fdsan_get_tag_value(uint64_t tag);
+
+/**
+ * @brief Enumerates fdsan error level.
+ *
+ * @since 12
+ */
+enum fdsan_error_level {
+	/* Do nothing if fdsan error occurs. */
+	FDSAN_ERROR_LEVEL_DISABLED,
+	/* Warning once if fdsan error occurs, and then downgrade to FDSAN_ERROR_LEVEL_DISABLED. */
+	FDSAN_ERROR_LEVEL_WARN_ONCE,
+	/* Keep warning only if fdsan error occurs. */
+	FDSAN_ERROR_LEVEL_WARN_ALWAYS,
+	/* Abort on fdsan error. */
+	FDSAN_ERROR_LEVEL_FATAL,
+};
+
+/**
+ * @brief Get fdsan error level.
+ *
+ * @return Return fdsan error level enumerate value.
+ * @since 12
+ */
+enum fdsan_error_level fdsan_get_error_level();
+
+/**
+ * @brief Set fdsan error level.
+ *
+ * @param new_level: Used to set fdsan error level.
+ * @return Return old fdsan error level enumerate value.
+ * @since 12
+ */
+enum fdsan_error_level fdsan_set_error_level(enum fdsan_error_level new_level);
+
 #include <fortify/stdio.h>
 
 #ifdef __cplusplus
diff --git a/third_party/musl/ndk_script/adapter/libc.ndk.json b/third_party/musl/ndk_script/adapter/libc.ndk.json
index e72f5997b..09454d9ff 100644
--- a/third_party/musl/ndk_script/adapter/libc.ndk.json
+++ b/third_party/musl/ndk_script/adapter/libc.ndk.json
@@ -362,6 +362,14 @@
     { "name": "fdim" },
     { "name": "fdimf" },
     { "name": "fdiml" },
+    { "name": "fdsan_create_owner_tag" },
+    { "name": "fdsan_exchange_owner_tag" },
+    { "name": "fdsan_close_with_tag" },
+    { "name": "fdsan_get_owner_tag" },
+    { "name": "fdsan_get_tag_type" },
+    { "name": "fdsan_get_tag_value" },
+    { "name": "fdsan_get_error_level" },
+    { "name": "fdsan_set_error_level" },
     { "name": "fdopen" },
     { "name": "fdopendir" },
     { "name": "feclearexcept" },
-- 
Gitee