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/qnx4/dir.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 kernel/fs/qnx4/dir.c (limited to 'kernel/fs/qnx4/dir.c') diff --git a/kernel/fs/qnx4/dir.c b/kernel/fs/qnx4/dir.c new file mode 100644 index 000000000..b218f9658 --- /dev/null +++ b/kernel/fs/qnx4/dir.c @@ -0,0 +1,81 @@ +/* + * QNX4 file system, Linux implementation. + * + * Version : 0.2.1 + * + * Using parts of the xiafs filesystem. + * + * History : + * + * 28-05-1998 by Richard Frowijn : first release. + * 20-06-1998 by Frank Denis : Linux 2.1.99+ & dcache support. + */ + +#include +#include "qnx4.h" + +static int qnx4_readdir(struct file *file, struct dir_context *ctx) +{ + struct inode *inode = file_inode(file); + unsigned int offset; + struct buffer_head *bh; + struct qnx4_inode_entry *de; + struct qnx4_link_info *le; + unsigned long blknum; + int ix, ino; + int size; + + QNX4DEBUG((KERN_INFO "qnx4_readdir:i_size = %ld\n", (long) inode->i_size)); + QNX4DEBUG((KERN_INFO "pos = %ld\n", (long) ctx->pos)); + + while (ctx->pos < inode->i_size) { + blknum = qnx4_block_map(inode, ctx->pos >> QNX4_BLOCK_SIZE_BITS); + bh = sb_bread(inode->i_sb, blknum); + if (bh == NULL) { + printk(KERN_ERR "qnx4_readdir: bread failed (%ld)\n", blknum); + return 0; + } + ix = (ctx->pos >> QNX4_DIR_ENTRY_SIZE_BITS) % QNX4_INODES_PER_BLOCK; + for (; ix < QNX4_INODES_PER_BLOCK; ix++, ctx->pos += QNX4_DIR_ENTRY_SIZE) { + offset = ix * QNX4_DIR_ENTRY_SIZE; + de = (struct qnx4_inode_entry *) (bh->b_data + offset); + if (!de->di_fname[0]) + continue; + if (!(de->di_status & (QNX4_FILE_USED|QNX4_FILE_LINK))) + continue; + if (!(de->di_status & QNX4_FILE_LINK)) + size = QNX4_SHORT_NAME_MAX; + else + size = QNX4_NAME_MAX; + size = strnlen(de->di_fname, size); + QNX4DEBUG((KERN_INFO "qnx4_readdir:%.*s\n", size, de->di_fname)); + if (!(de->di_status & QNX4_FILE_LINK)) + ino = blknum * QNX4_INODES_PER_BLOCK + ix - 1; + else { + le = (struct qnx4_link_info*)de; + ino = ( le32_to_cpu(le->dl_inode_blk) - 1 ) * + QNX4_INODES_PER_BLOCK + + le->dl_inode_ndx; + } + if (!dir_emit(ctx, de->di_fname, size, ino, DT_UNKNOWN)) { + brelse(bh); + return 0; + } + } + brelse(bh); + } + return 0; +} + +const struct file_operations qnx4_dir_operations = +{ + .llseek = generic_file_llseek, + .read = generic_read_dir, + .iterate = qnx4_readdir, + .fsync = generic_file_fsync, +}; + +const struct inode_operations qnx4_dir_inode_operations = +{ + .lookup = qnx4_lookup, +}; -- cgit 1.2.3-korg