mirror of https://github.com/OpenIPC/firmware.git
140 lines
3.5 KiB
Diff
140 lines
3.5 KiB
Diff
--- linux-4.9.37/fs/yaffs2/yaffs_attribs.c 1970-01-01 03:00:00.000000000 +0300
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+++ linux-4.9.y/fs/yaffs2/yaffs_attribs.c 2021-06-07 13:01:34.000000000 +0300
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@@ -0,0 +1,136 @@
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+/*
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+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
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+ *
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+ * Copyright (C) 2002-2011 Aleph One Ltd.
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+ * for Toby Churchill Ltd and Brightstar Engineering
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+ *
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+ * Created by Charles Manning <charles@aleph1.co.uk>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ */
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+
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+#include "yaffs_guts.h"
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+#include "yaffs_attribs.h"
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+
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+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0))
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+#define IATTR_UID ia_uid
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+#define IATTR_GID ia_gid
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+#else
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+#define IATTR_UID ia_uid.val
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+#define IATTR_GID ia_gid.val
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+#endif
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+
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+/*
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+ * Loading attibs from/to object header assumes the object header
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+ * is in cpu endian.
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+ */
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+void yaffs_load_attribs(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh)
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+{
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+ obj->yst_uid = oh->yst_uid;
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+ obj->yst_gid = oh->yst_gid;
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+ obj->yst_atime = oh->yst_atime;
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+ obj->yst_mtime = oh->yst_mtime;
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+ obj->yst_ctime = oh->yst_ctime;
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+ obj->yst_rdev = oh->yst_rdev;
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+}
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+
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+void yaffs_load_attribs_oh(struct yaffs_obj_hdr *oh, struct yaffs_obj *obj)
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+{
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+ oh->yst_uid = obj->yst_uid;
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+ oh->yst_gid = obj->yst_gid;
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+ oh->yst_atime = obj->yst_atime;
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+ oh->yst_mtime = obj->yst_mtime;
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+ oh->yst_ctime = obj->yst_ctime;
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+ oh->yst_rdev = obj->yst_rdev;
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+
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+}
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+
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+void yaffs_load_current_time(struct yaffs_obj *obj, int do_a, int do_c)
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+{
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+ obj->yst_mtime = Y_CURRENT_TIME;
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+ if (do_a)
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+ obj->yst_atime = obj->yst_mtime;
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+ if (do_c)
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+ obj->yst_ctime = obj->yst_mtime;
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+}
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+
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+void yaffs_attribs_init(struct yaffs_obj *obj, u32 gid, u32 uid, u32 rdev)
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+{
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+ yaffs_load_current_time(obj, 1, 1);
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+ obj->yst_rdev = rdev;
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+ obj->yst_uid = uid;
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+ obj->yst_gid = gid;
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+}
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+
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+static loff_t yaffs_get_file_size(struct yaffs_obj *obj)
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+{
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+ YCHAR *alias = NULL;
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+ obj = yaffs_get_equivalent_obj(obj);
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+
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+ switch (obj->variant_type) {
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+ case YAFFS_OBJECT_TYPE_FILE:
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+ return obj->variant.file_variant.file_size;
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+ case YAFFS_OBJECT_TYPE_SYMLINK:
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+ alias = obj->variant.symlink_variant.alias;
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+ if (!alias)
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+ return 0;
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+ return strnlen(alias, YAFFS_MAX_ALIAS_LENGTH);
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+ default:
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+ return 0;
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+ }
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+}
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+
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+int yaffs_set_attribs(struct yaffs_obj *obj, struct iattr *attr)
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+{
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+ unsigned int valid = attr->ia_valid;
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+
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+ if (valid & ATTR_MODE)
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+ obj->yst_mode = attr->ia_mode;
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+ if (valid & ATTR_UID)
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+ obj->yst_uid = attr->IATTR_UID;
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+ if (valid & ATTR_GID)
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+ obj->yst_gid = attr->IATTR_GID;
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+
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+ if (valid & ATTR_ATIME)
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+ obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime);
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+ if (valid & ATTR_CTIME)
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+ obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime);
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+ if (valid & ATTR_MTIME)
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+ obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime);
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+
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+ if (valid & ATTR_SIZE)
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+ yaffs_resize_file(obj, attr->ia_size);
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+
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+ yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
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+
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+ return YAFFS_OK;
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+
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+}
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+
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+int yaffs_get_attribs(struct yaffs_obj *obj, struct iattr *attr)
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+{
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+ unsigned int valid = 0;
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+
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+ attr->ia_mode = obj->yst_mode;
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+ valid |= ATTR_MODE;
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+ attr->IATTR_UID = obj->yst_uid;
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+ valid |= ATTR_UID;
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+ attr->IATTR_GID = obj->yst_gid;
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+ valid |= ATTR_GID;
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+
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+ Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime;
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+ valid |= ATTR_ATIME;
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+ Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime;
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+ valid |= ATTR_CTIME;
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+ Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime;
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+ valid |= ATTR_MTIME;
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+
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+ attr->ia_size = yaffs_get_file_size(obj);
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+ valid |= ATTR_SIZE;
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+
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+ attr->ia_valid = valid;
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+
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+ return YAFFS_OK;
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+}
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