From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/fs/affs/symlink.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 kernel/fs/affs/symlink.c (limited to 'kernel/fs/affs/symlink.c') diff --git a/kernel/fs/affs/symlink.c b/kernel/fs/affs/symlink.c new file mode 100644 index 000000000..f39b71c39 --- /dev/null +++ b/kernel/fs/affs/symlink.c @@ -0,0 +1,81 @@ +/* + * 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 = kmap(page); + struct slink_front *lf; + int err; + int i, j; + char c; + char lc; + + pr_debug("follow_link(ino=%lu)\n", inode->i_ino); + + err = -EIO; + 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); + kunmap(page); + unlock_page(page); + return 0; +fail: + SetPageError(page); + kunmap(page); + unlock_page(page); + return err; +} + +const struct address_space_operations affs_symlink_aops = { + .readpage = affs_symlink_readpage, +}; + +const struct inode_operations affs_symlink_inode_operations = { + .readlink = generic_readlink, + .follow_link = page_follow_link_light, + .put_link = page_put_link, + .setattr = affs_notify_change, +}; -- cgit 1.2.3-korg