/* * 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_shared = qnx4_readdir, .fsync = generic_file_fsync, }; const struct inode_operations qnx4_dir_inode_operations = { .lookup = qnx4_lookup, }; xt.git/log/include/uapi/rdma'>
path: root/include/uapi/rdma
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