mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 14:30:53 +07:00
945ffe54bb
qnx4 wrte support has never been fully implement, is broken since the dawn of time and hasn't been actively developed since before git history started. Instead of letting it further bitrot and complicate API transition (like the new truncate code) remove it. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Anders Larsen <al@alarsen.net> Cc: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/*
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* QNX4 file system, Linux implementation.
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*
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* Version : 0.2.1
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*
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* Using parts of the xiafs filesystem.
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*
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* History :
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*
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* 28-05-1998 by Richard Frowijn : first release.
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* 20-06-1998 by Frank Denis : Linux 2.1.99+ & dcache support.
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*/
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#include <linux/smp_lock.h>
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#include <linux/buffer_head.h>
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#include "qnx4.h"
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static int qnx4_readdir(struct file *filp, void *dirent, filldir_t filldir)
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{
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struct inode *inode = filp->f_path.dentry->d_inode;
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unsigned int offset;
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struct buffer_head *bh;
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struct qnx4_inode_entry *de;
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struct qnx4_link_info *le;
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unsigned long blknum;
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int ix, ino;
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int size;
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QNX4DEBUG(("qnx4_readdir:i_size = %ld\n", (long) inode->i_size));
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QNX4DEBUG(("filp->f_pos = %ld\n", (long) filp->f_pos));
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lock_kernel();
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while (filp->f_pos < inode->i_size) {
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blknum = qnx4_block_map( inode, filp->f_pos >> QNX4_BLOCK_SIZE_BITS );
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bh = sb_bread(inode->i_sb, blknum);
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if(bh==NULL) {
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printk(KERN_ERR "qnx4_readdir: bread failed (%ld)\n", blknum);
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break;
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}
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ix = (int)(filp->f_pos >> QNX4_DIR_ENTRY_SIZE_BITS) % QNX4_INODES_PER_BLOCK;
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while (ix < QNX4_INODES_PER_BLOCK) {
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offset = ix * QNX4_DIR_ENTRY_SIZE;
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de = (struct qnx4_inode_entry *) (bh->b_data + offset);
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size = strlen(de->di_fname);
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if (size) {
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if ( !( de->di_status & QNX4_FILE_LINK ) && size > QNX4_SHORT_NAME_MAX )
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size = QNX4_SHORT_NAME_MAX;
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else if ( size > QNX4_NAME_MAX )
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size = QNX4_NAME_MAX;
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if ( ( de->di_status & (QNX4_FILE_USED|QNX4_FILE_LINK) ) != 0 ) {
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QNX4DEBUG(("qnx4_readdir:%.*s\n", size, de->di_fname));
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if ( ( de->di_status & QNX4_FILE_LINK ) == 0 )
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ino = blknum * QNX4_INODES_PER_BLOCK + ix - 1;
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else {
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le = (struct qnx4_link_info*)de;
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ino = ( le32_to_cpu(le->dl_inode_blk) - 1 ) *
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QNX4_INODES_PER_BLOCK +
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le->dl_inode_ndx;
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}
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if (filldir(dirent, de->di_fname, size, filp->f_pos, ino, DT_UNKNOWN) < 0) {
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brelse(bh);
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goto out;
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}
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}
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}
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ix++;
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filp->f_pos += QNX4_DIR_ENTRY_SIZE;
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}
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brelse(bh);
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}
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out:
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unlock_kernel();
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return 0;
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}
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const struct file_operations qnx4_dir_operations =
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{
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.read = generic_read_dir,
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.readdir = qnx4_readdir,
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.fsync = simple_fsync,
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};
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const struct inode_operations qnx4_dir_inode_operations =
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{
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.lookup = qnx4_lookup,
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};
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