feat: add liteos patch ability

Signed-off-by: jason_gitee <yangjie140@huawei.com>

fs/vfs/BUILD.gn

@@ -110,7 +110,10 @@ kernel_module(module_name) {
     "$LITEOSTOPDIR/fs/vfs/vnode_hash.c",
   ]
 
-  include_dirs = [ "$LITEOSTOPDIR/syscall" ]
+  include_dirs = [
+    "$LITEOSTOPDIR/syscall",
+    "$LITEOSTOPDIR/fs/zpfs/include",
+  ]
   public_configs = [ ":public" ]
 }
 

fs/vfs/Makefile

@@ -101,6 +101,7 @@ LOCAL_INCLUDE := \
 	-I $(LITEOSTOPDIR)/drivers/mtd/multi_partition/include\
 	-I $(LITEOSTOPDIR)/fs/vfs/include/operation\
 	-I $(LITEOSTOPDIR)/syscall\
+	-I $(LITEOSTOPDIR)/fs/zpfs/include
 
 ifeq ($(LOSCFG_FS_FAT), y)
 LOCAL_INCLUDE += -I $(LITEOSTHIRDPARTY)/FatFs/source

fs/vfs/include/vnode.h

@@ -159,6 +159,7 @@ int VnodeDevInit(void);
 int VnodeAlloc(struct VnodeOps *vop, struct Vnode **vnode);
 int VnodeFree(struct Vnode *vnode);
 int VnodeLookup(const char *path, struct Vnode **vnode, uint32_t flags);
+int VnodeLookupAt(const char *path, struct Vnode **vnode, uint32_t flags, struct Vnode *orgVnode);
 int VnodeHold(void);
 int VnodeDrop(void);
 void VnodeRefDec(struct Vnode *vnode);

fs/vfs/vnode.c

@@ -360,14 +360,21 @@ STEP_FINISH:
     return ret;
 }
 
-int VnodeLookup(const char *path, struct Vnode **result, uint32_t flags)
+int VnodeLookupAt(const char *path, struct Vnode **result, uint32_t flags, struct Vnode *orgVnode)
 {
+    int ret;
     struct Vnode *startVnode = NULL;
     char *normalizedPath = NULL;
 
-    int ret = PreProcess(path, &startVnode, &normalizedPath);
+    if (orgVnode != NULL) {
-    if (ret != LOS_OK) {
+        startVnode = orgVnode;
-        goto OUT_FREE_PATH;
+        normalizedPath = strdup(path);
+    } else {
+        ret = PreProcess(path, &startVnode, &normalizedPath);
+        if (ret != LOS_OK) {
+            PRINT_ERR("[VFS]lookup failed, invalid path err = %d\n", ret);
+            goto OUT_FREE_PATH;
+        }
     }
 
     if (normalizedPath[0] == '/' && normalizedPath[1] == '\0') {
@@ -404,6 +411,11 @@ OUT_FREE_PATH:
     return ret;
 }
 
+int VnodeLookup(const char *path, struct Vnode **vnode, uint32_t flags)
+{
+    return VnodeLookupAt(path, vnode, flags, NULL);
+}
+
 static void ChangeRootInternal(struct Vnode *rootOld, char *dirname)
 {
     int ret;

fs/zpfs/BUILD.gn

@@ -33,7 +33,9 @@ module_switch = defined(LOSCFG_FS_ZPFS)
 module_name = get_path_info(rebase_path("."), "name")
 kernel_module(module_name) {
   sources = [
-    "vfs_zpfs.c",
+    "src/vfs_zpfs.c",
-    "zpfs.c",
+    "src/zpfs.c",
   ]
+
+  include_dirs = [ "include" ]
 }

fs/zpfs/Makefile

@@ -31,14 +31,10 @@ include $(LITEOSTOPDIR)/config.mk
 
 MODULE_NAME := $(notdir $(shell pwd))
 
-LOCAL_SRCS := $(wildcard *.c)
+LOCAL_SRCS := $(wildcard src/*.c)
-LOCAL_INCLUDE = \
+LOCAL_INCLUDE := \
-    -I $(LITEOSTOPDIR)/fs/include \
+		-I $(LITEOSTOPDIR)/fs/zpfs/include
-    -I $(LITEOSTOPDIR)/fs/zpfs \
-    -I $(LITEOSTOPDIR)/../../third_party/NuttX/liteos/fs/include\
-    -I $(LITEOSTOPDIR)/../../third_party/NuttX/liteos/fs/include/inode
 
-LOCAL_FLAGS := $(LITEOS_GCOV_OPTS)
+LOCAL_FLAGS := $(LOCAL_INCLUDE) $(LITEOS_GCOV_OPTS)
 
 include $(MODULE)
-

kernel/common/rootfs/los_rootfs.c

@@ -81,6 +81,17 @@ STATIC INT32 AddEmmcParts(INT32 rootAddr, INT32 rootSize, INT32 userAddr, INT32
         return LOS_NOK;
     }
 
+#ifdef LOSCFG_PLATFORM_PATCHFS
+    UINT64 patchStartCnt = userAddr / EMMC_SEC_SIZE;
+    UINT64 patchSizeCnt = PATCH_SIZE / EMMC_SEC_SIZE;
+    ret = add_mmc_partition(emmc, patchStartCnt, patchSizeCnt);
+    if (ret != LOS_OK) {
+        PRINT_ERR("Failed to add mmc patch partition!\n");
+        return LOS_NOK;
+    }
+    userAddr += PATCH_SIZE;
+#endif
+
     UINT64 storageStartCnt = userAddr / EMMC_SEC_SIZE;
     UINT64 storageSizeCnt = userSize / EMMC_SEC_SIZE;
     UINT64 userdataStartCnt = storageStartCnt + storageSizeCnt;
@@ -235,6 +246,35 @@ STATIC INT32 MountPartitions(CHAR *fsType, UINT32 mountFlags)
         return ret;
     }
 
+#ifdef LOSCFG_STORAGE_EMMC
+#ifdef LOSCFG_PLATFORM_PATCHFS
+    /* Mount patch */
+    ret = mkdir(PATCH_DIR_NAME, DEFAULT_MOUNT_DIR_MODE);
+    if ((ret != LOS_OK) && ((err = get_errno()) != EEXIST)) {
+        PRINT_ERR("Failed to mkdir %s, errno %d: %s\n", PATCH_DIR_NAME, err, strerror(err));
+        return ret;
+    }
+
+    ret = mount(PATCH_DEV_NAME, PATCH_DIR_NAME, fsType, 0, DEFAULT_MOUNT_DATA);
+    if ((ret != LOS_OK) && ((err = get_errno()) == ENOTSUP)) {
+        ret = format(PATCH_DEV_NAME, 0, FM_FAT32);
+        if (ret != LOS_OK) {
+            PRINT_ERR("Failed to format %s\n", PATCH_DEV_NAME);
+            return ret;
+        }
+
+        ret = mount(PATCH_DEV_NAME, PATCH_DIR_NAME, fsType, 0, DEFAULT_MOUNT_DATA);
+        if (ret != LOS_OK) {
+            err = get_errno();
+        }
+    }
+    if (ret != LOS_OK) {
+        PRINT_ERR("Failed to mount %s, errno %d: %s\n", PATCH_DIR_NAME, err, strerror(err));
+        return ret;
+    }
+#endif
+#endif
+
     /* Mount userfs */
     ret = mkdir(STORAGE_DIR_NAME, DEFAULT_MOUNT_DIR_MODE);
     if ((ret != LOS_OK) && ((err = get_errno()) != EEXIST)) {

kernel/common/rootfs/los_rootfs.h

@@ -38,6 +38,9 @@
 #define STORAGE_DIR_NAME        "/storage"
 #ifdef LOSCFG_STORAGE_EMMC
 #define USERDATA_DIR_NAME       "/userdata"
+#ifdef LOSCFG_PLATFORM_PATCHFS
+#define PATCH_DIR_NAME          "/patch"
+#endif
 #endif
 #define DEFAULT_MOUNT_DIR_MODE  0755
 #define DEFAULT_MOUNT_DATA      NULL
@@ -64,11 +67,20 @@
 #define USERFS_SIZE             (CFIFLASH_CAPACITY - ROOTFS_ADDR - ROOTFS_SIZE)
 #elif defined (LOSCFG_STORAGE_EMMC)
 #define ROOT_DEV_NAME           "/dev/mmcblk0p0"
+#ifdef LOSCFG_PLATFORM_PATCHFS
+#define PATCH_DEV_NAME          "/dev/mmcblk0p1"
+#define USER_DEV_NAME           "/dev/mmcblk0p2"
+#define USERDATA_DEV_NAME       "/dev/mmcblk0p3"
+#else
 #define USER_DEV_NAME           "/dev/mmcblk0p1"
 #define USERDATA_DEV_NAME       "/dev/mmcblk0p2"
+#endif
 #define ROOTFS_ADDR             0xA00000
 #define ROOTFS_SIZE             0x1400000
 #define USERFS_SIZE             0x3200000
+#ifdef LOSCFG_PLATFORM_PATCHFS
+#define PATCH_SIZE              0x200000
+#endif
 #ifdef DEFAULT_MOUNT_DIR_MODE
 #undef DEFAULT_MOUNT_DIR_MODE
 #endif