[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/affs/symlink.c b/src/kernel/linux/v4.14/fs/affs/symlink.c
new file mode 100644
index 0000000..a7531b2
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/affs/symlink.c
@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/fs/affs/symlink.c
+ *
+ * 1995 Hans-Joachim Widmaier - Modified for affs.
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * affs symlink handling code
+ */
+
+#include "affs.h"
+
+static int affs_symlink_readpage(struct file *file, struct page *page)
+{
+ struct buffer_head *bh;
+ struct inode *inode = page->mapping->host;
+ char *link = page_address(page);
+ struct slink_front *lf;
+ int i, j;
+ char c;
+ char lc;
+
+ pr_debug("get_link(ino=%lu)\n", inode->i_ino);
+
+ bh = affs_bread(inode->i_sb, inode->i_ino);
+ if (!bh)
+ goto fail;
+ i = 0;
+ j = 0;
+ lf = (struct slink_front *)bh->b_data;
+ lc = 0;
+
+ if (strchr(lf->symname,':')) { /* Handle assign or volume name */
+ struct affs_sb_info *sbi = AFFS_SB(inode->i_sb);
+ char *pf;
+ spin_lock(&sbi->symlink_lock);
+ pf = sbi->s_prefix ? sbi->s_prefix : "/";
+ while (i < 1023 && (c = pf[i]))
+ link[i++] = c;
+ spin_unlock(&sbi->symlink_lock);
+ while (i < 1023 && lf->symname[j] != ':')
+ link[i++] = lf->symname[j++];
+ if (i < 1023)
+ link[i++] = '/';
+ j++;
+ lc = '/';
+ }
+ while (i < 1023 && (c = lf->symname[j])) {
+ if (c == '/' && lc == '/' && i < 1020) { /* parent dir */
+ link[i++] = '.';
+ link[i++] = '.';
+ }
+ link[i++] = c;
+ lc = c;
+ j++;
+ }
+ link[i] = '\0';
+ affs_brelse(bh);
+ SetPageUptodate(page);
+ unlock_page(page);
+ return 0;
+fail:
+ SetPageError(page);
+ unlock_page(page);
+ return -EIO;
+}
+
+const struct address_space_operations affs_symlink_aops = {
+ .readpage = affs_symlink_readpage,
+};
+
+const struct inode_operations affs_symlink_inode_operations = {
+ .get_link = page_get_link,
+ .setattr = affs_notify_change,
+};