5d026c7242
Adds support for qnx6fs readonly support to the linux kernel. * Mount option The option mmi_fs can be used to mount Harman Becker/Audi MMI 3G HDD qnx6fs filesystems. * Documentation A high level filesystem stucture description can be found in the Documentation/filesystems directory. (qnx6.txt) * Additional features - Active (stable) superblock selection - Superblock checksum check (enforced) - Supports mount of qnx6 filesystems with to host different endianess - Automatic endianess detection - Longfilename support (with non-enfocing crc check) - All blocksizes (512, 1024, 2048 and 4096 supported) Signed-off-by: Kai Bankett <chaosman@ontika.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
42 lines
942 B
C
42 lines
942 B
C
/*
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* QNX6 file system, Linux implementation.
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*
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* Version : 1.0.0
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*
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* History :
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*
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* 01-02-2012 by Kai Bankett (chaosman@ontika.net) : first release.
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* 16-02-2012 pagemap extension by Al Viro
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*
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*/
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#include "qnx6.h"
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struct dentry *qnx6_lookup(struct inode *dir, struct dentry *dentry,
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struct nameidata *nd)
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{
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unsigned ino;
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struct page *page;
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struct inode *foundinode = NULL;
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const char *name = dentry->d_name.name;
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int len = dentry->d_name.len;
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if (len > QNX6_LONG_NAME_MAX)
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return ERR_PTR(-ENAMETOOLONG);
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ino = qnx6_find_entry(len, dir, name, &page);
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if (ino) {
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foundinode = qnx6_iget(dir->i_sb, ino);
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qnx6_put_page(page);
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if (IS_ERR(foundinode)) {
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QNX6DEBUG((KERN_ERR "qnx6: lookup->iget -> "
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" error %ld\n", PTR_ERR(foundinode)));
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return ERR_CAST(foundinode);
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}
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} else {
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QNX6DEBUG((KERN_INFO "qnx6_lookup: not found %s\n", name));
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return NULL;
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}
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d_add(dentry, foundinode);
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return NULL;
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}
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