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[/] [or1k/] [tags/] [LINUX_2_4_26_OR32/] [linux/] [linux-2.4/] [fs/] [coda/] [dir.c] - Blame information for rev 1765

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/*
 * Directory operations for Coda filesystem
 * Original version: (C) 1996 P. Braam and M. Callahan
 * Rewritten for Linux 2.1. (C) 1997 Carnegie Mellon University
 *
 * Carnegie Mellon encourages users to contribute improvements to
 * the Coda project. Contact Peter Braam (coda@cs.cmu.edu).
 */
 
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/stat.h>
#include <linux/errno.h>
#include <linux/locks.h>
#include <linux/string.h>
#include <linux/smp_lock.h>
 
#include <asm/uaccess.h>
 
#include <linux/coda.h>
#include <linux/coda_linux.h>
#include <linux/coda_psdev.h>
#include <linux/coda_fs_i.h>
#include <linux/coda_cache.h>
#include <linux/coda_proc.h>
 
/* dir inode-ops */
static int coda_create(struct inode *dir, struct dentry *new, int mode);
static int coda_mknod(struct inode *dir, struct dentry *new, int mode, int rdev);
static struct dentry *coda_lookup(struct inode *dir, struct dentry *target);
static int coda_link(struct dentry *old_dentry, struct inode *dir_inode,
                     struct dentry *entry);
static int coda_unlink(struct inode *dir_inode, struct dentry *entry);
static int coda_symlink(struct inode *dir_inode, struct dentry *entry,
                        const char *symname);
static int coda_mkdir(struct inode *dir_inode, struct dentry *entry, int mode);
static int coda_rmdir(struct inode *dir_inode, struct dentry *entry);
static int coda_rename(struct inode *old_inode, struct dentry *old_dentry,
                       struct inode *new_inode, struct dentry *new_dentry);
 
/* dir file-ops */
static int coda_readdir(struct file *file, void *dirent, filldir_t filldir);
 
/* dentry ops */
static int coda_dentry_revalidate(struct dentry *de, int);
static int coda_dentry_delete(struct dentry *);
 
/* support routines */
static int coda_venus_readdir(struct file *filp, filldir_t filldir,
                              void *dirent, struct dentry *dir);
int coda_fsync(struct file *, struct dentry *dentry, int datasync);
 
int coda_hasmknod;
 
struct dentry_operations coda_dentry_operations =
{
        d_revalidate:   coda_dentry_revalidate,
        d_delete:       coda_dentry_delete,
};
 
struct inode_operations coda_dir_inode_operations =
{
        create:         coda_create,
        lookup:         coda_lookup,
        link:           coda_link,
        unlink:         coda_unlink,
        symlink:        coda_symlink,
        mkdir:          coda_mkdir,
        rmdir:          coda_rmdir,
        mknod:          coda_mknod,
        rename:         coda_rename,
        permission:     coda_permission,
        revalidate:     coda_revalidate_inode,
        setattr:        coda_notify_change,
};
 
struct file_operations coda_dir_operations = {
        llseek:         generic_file_llseek,
        read:           generic_read_dir,
        readdir:        coda_readdir,
        open:           coda_open,
        flush:          coda_flush,
        release:        coda_release,
        fsync:          coda_fsync,
};
 
 
/* inode operations for directories */
/* access routines: lookup, readlink, permission */
static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry)
{
        struct inode *res_inode = NULL;
        struct ViceFid resfid = {0,0,0};
        int dropme = 0; /* to indicate entry should not be cached */
        int type = 0;
        int error = 0;
        const char *name = entry->d_name.name;
        size_t length = entry->d_name.len;
 
        if ( length > CODA_MAXNAMLEN ) {
                printk("name too long: lookup, %s (%*s)\n",
                       coda_i2s(dir), (int)length, name);
                return ERR_PTR(-ENAMETOOLONG);
        }
 
        CDEBUG(D_INODE, "name %s, len %ld in ino %ld, fid %s\n",
               name, (long)length, dir->i_ino, coda_i2s(dir));
 
        /* control object, create inode on the fly */
        if (coda_isroot(dir) && coda_iscontrol(name, length)) {
                error = coda_cnode_makectl(&res_inode, dir->i_sb);
                CDEBUG(D_SPECIAL,
                       "Lookup on CTL object; dir ino %ld, count %d\n",
                       dir->i_ino, atomic_read(&dir->i_count));
                dropme = 1;
                goto exit;
        }
 
        error = venus_lookup(dir->i_sb, coda_i2f(dir),
                             (const char *)name, length, &type, &resfid);
 
        res_inode = NULL;
        if (!error) {
                if (type & CODA_NOCACHE) {
                        type &= (~CODA_NOCACHE);
                        CDEBUG(D_INODE, "dropme set for %s\n",
                               coda_f2s(&resfid));
                        dropme = 1;
                }
 
                error = coda_cnode_make(&res_inode, &resfid, dir->i_sb);
                if (error) return ERR_PTR(error);
        } else if (error != -ENOENT) {
                CDEBUG(D_INODE, "error for %s(%*s)%d\n",
                       coda_i2s(dir), (int)length, name, error);
                return ERR_PTR(error);
        }
        CDEBUG(D_INODE, "lookup: %s is (%s), type %d result %d, dropme %d\n",
               name, coda_f2s(&resfid), type, error, dropme);
 
exit:
        entry->d_time = 0;
        entry->d_op = &coda_dentry_operations;
        d_add(entry, res_inode);
        if ( dropme ) {
                d_drop(entry);
                coda_flag_inode(res_inode, C_VATTR);
        }
        return NULL;
}
 
 
int coda_permission(struct inode *inode, int mask)
{
        int error;
 
        coda_vfs_stat.permission++;
 
        if ( mask == 0 )
                return 0;
 
        if ( coda_access_cache ) {
                coda_permission_stat.count++;
 
                if ( coda_cache_check(inode, mask) ) {
                        coda_permission_stat.hit_count++;
                        return 0;
                }
        }
 
        CDEBUG(D_INODE, "mask is %o\n", mask);
        error = venus_access(inode->i_sb, coda_i2f(inode), mask);
 
        CDEBUG(D_INODE, "fid: %s, ino: %ld (mask: %o) error: %d\n",
               coda_i2s(inode), inode->i_ino, mask, error);
 
        if (!error)
                coda_cache_enter(inode, mask);
 
        return error;
}
 
 
static inline void coda_dir_changed(struct inode *dir, int link)
{
#ifdef REQUERY_VENUS_FOR_MTIME
        /* invalidate the directory cnode's attributes so we refetch the
         * attributes from venus next time the inode is referenced */
        coda_flag_inode(dir, C_VATTR);
#else
        /* optimistically we can also act as if our nose bleeds. The
         * granularity of the mtime is coarse anyways so we might actually be
         * right most of the time. Note: we only do this for directories. */
        dir->i_mtime = dir->i_ctime = CURRENT_TIME;
#endif
        if (link)
                dir->i_nlink += link;
}
 
/* creation routines: create, mknod, mkdir, link, symlink */
static int coda_create(struct inode *dir, struct dentry *de, int mode)
{
        int error=0;
        const char *name=de->d_name.name;
        int length=de->d_name.len;
        struct inode *inode;
        struct ViceFid newfid;
        struct coda_vattr attrs;
 
        coda_vfs_stat.create++;
 
        CDEBUG(D_INODE, "name: %s, length %d, mode %o\n", name, length, mode);
 
        if (coda_isroot(dir) && coda_iscontrol(name, length))
                return -EPERM;
 
        error = venus_create(dir->i_sb, coda_i2f(dir), name, length,
                                0, mode, 0, &newfid, &attrs);
 
        if ( error ) {
                CDEBUG(D_INODE, "create: %s, result %d\n",
                       coda_f2s(&newfid), error);
                d_drop(de);
                return error;
        }
 
        inode = coda_iget(dir->i_sb, &newfid, &attrs);
        if ( IS_ERR(inode) ) {
                d_drop(de);
                return PTR_ERR(inode);
        }
 
        /* invalidate the directory cnode's attributes */
        coda_dir_changed(dir, 0);
        d_instantiate(de, inode);
        return 0;
}
 
static int coda_mknod(struct inode *dir, struct dentry *de, int mode, int rdev)
{
        int error=0;
        const char *name=de->d_name.name;
        int length=de->d_name.len;
        struct inode *inode;
        struct ViceFid newfid;
        struct coda_vattr attrs;
 
        if ( coda_hasmknod == 0 )
                return -EIO;
 
        coda_vfs_stat.create++;
 
        CDEBUG(D_INODE, "name: %s, length %d, mode %o, rdev %x\n",
               name, length, mode, rdev);
 
        if (coda_isroot(dir) && coda_iscontrol(name, length))
                return -EPERM;
 
        error = venus_create(dir->i_sb, coda_i2f(dir), name, length,
                                0, mode, rdev, &newfid, &attrs);
 
        if ( error ) {
                CDEBUG(D_INODE, "mknod: %s, result %d\n",
                       coda_f2s(&newfid), error);
                d_drop(de);
                return error;
        }
 
        inode = coda_iget(dir->i_sb, &newfid, &attrs);
        if ( IS_ERR(inode) ) {
                d_drop(de);
                return PTR_ERR(inode);
        }
 
        /* invalidate the directory cnode's attributes */
        coda_dir_changed(dir, 0);
        d_instantiate(de, inode);
        return 0;
}
 
static int coda_mkdir(struct inode *dir, struct dentry *de, int mode)
{
        struct inode *inode;
        struct coda_vattr attrs;
        const char *name = de->d_name.name;
        int len = de->d_name.len;
        int error;
        struct ViceFid newfid;
 
        coda_vfs_stat.mkdir++;
 
        if (coda_isroot(dir) && coda_iscontrol(name, len))
                return -EPERM;
 
        CDEBUG(D_INODE, "mkdir %s (len %d) in %s, mode %o.\n",
               name, len, coda_i2s(dir), mode);
 
        attrs.va_mode = mode;
        error = venus_mkdir(dir->i_sb, coda_i2f(dir),
                               name, len, &newfid, &attrs);
 
        if ( error ) {
                CDEBUG(D_INODE, "mkdir error: %s result %d\n",
                       coda_f2s(&newfid), error);
                d_drop(de);
                return error;
        }
 
        CDEBUG(D_INODE, "mkdir: new dir has fid %s.\n",
               coda_f2s(&newfid));
 
        inode = coda_iget(dir->i_sb, &newfid, &attrs);
        if ( IS_ERR(inode) ) {
                d_drop(de);
                return PTR_ERR(inode);
        }
 
        /* invalidate the directory cnode's attributes */
        coda_dir_changed(dir, 1);
        d_instantiate(de, inode);
        return 0;
}
 
/* try to make de an entry in dir_inodde linked to source_de */
static int coda_link(struct dentry *source_de, struct inode *dir_inode,
          struct dentry *de)
{
        struct inode *inode = source_de->d_inode;
        const char * name = de->d_name.name;
        int len = de->d_name.len;
        int error;
 
        coda_vfs_stat.link++;
 
        if (coda_isroot(dir_inode) && coda_iscontrol(name, len))
                return -EPERM;
 
        CDEBUG(D_INODE, "old: fid: %s\n", coda_i2s(inode));
        CDEBUG(D_INODE, "directory: %s\n", coda_i2s(dir_inode));
 
        error = venus_link(dir_inode->i_sb, coda_i2f(inode),
                           coda_i2f(dir_inode), (const char *)name, len);
 
        if (error) {
                d_drop(de);
                goto out;
        }
 
        coda_dir_changed(dir_inode, 0);
        atomic_inc(&inode->i_count);
        d_instantiate(de, inode);
        inode->i_nlink++;
 
out:
        CDEBUG(D_INODE, "link result %d\n",error);
        return(error);
}
 
 
static int coda_symlink(struct inode *dir_inode, struct dentry *de,
                        const char *symname)
{
        const char *name = de->d_name.name;
        int len = de->d_name.len;
        int symlen;
        int error=0;
 
        coda_vfs_stat.symlink++;
 
        if (coda_isroot(dir_inode) && coda_iscontrol(name, len))
                return -EPERM;
 
        symlen = strlen(symname);
        if ( symlen > CODA_MAXPATHLEN )
                return -ENAMETOOLONG;
 
        CDEBUG(D_INODE, "symname: %s, length: %d\n", symname, symlen);
 
        /*
         * This entry is now negative. Since we do not create
         * an inode for the entry we have to drop it.
         */
        d_drop(de);
        error = venus_symlink(dir_inode->i_sb, coda_i2f(dir_inode), name, len,
                              symname, symlen);
 
        /* mtime is no good anymore */
        if ( !error )
                coda_dir_changed(dir_inode, 0);
 
        CDEBUG(D_INODE, "in symlink result %d\n",error);
        return error;
}
 
/* destruction routines: unlink, rmdir */
int coda_unlink(struct inode *dir, struct dentry *de)
{
        int error;
        const char *name = de->d_name.name;
        int len = de->d_name.len;
 
        coda_vfs_stat.unlink++;
 
        CDEBUG(D_INODE, " %s in %s, dirino %ld\n", name ,
               coda_i2s(dir), dir->i_ino);
 
        error = venus_remove(dir->i_sb, coda_i2f(dir), name, len);
        if ( error ) {
                CDEBUG(D_INODE, "upc returned error %d\n", error);
                return error;
        }
 
        coda_dir_changed(dir, 0);
        de->d_inode->i_nlink--;
 
        return 0;
}
 
int coda_rmdir(struct inode *dir, struct dentry *de)
{
        const char *name = de->d_name.name;
        int len = de->d_name.len;
        int error;
 
        coda_vfs_stat.rmdir++;
 
        if (!d_unhashed(de))
                return -EBUSY;
        error = venus_rmdir(dir->i_sb, coda_i2f(dir), name, len);
 
        if ( error ) {
                CDEBUG(D_INODE, "upc returned error %d\n", error);
                return error;
        }
 
        coda_dir_changed(dir, -1);
        de->d_inode->i_nlink--;
        d_delete(de);
 
        return 0;
}
 
/* rename */
static int coda_rename(struct inode *old_dir, struct dentry *old_dentry,
                       struct inode *new_dir, struct dentry *new_dentry)
{
        const char *old_name = old_dentry->d_name.name;
        const char *new_name = new_dentry->d_name.name;
        int old_length = old_dentry->d_name.len;
        int new_length = new_dentry->d_name.len;
        int link_adjust = 0;
        int error;
 
        coda_vfs_stat.rename++;
 
        CDEBUG(D_INODE, "old: %s, (%d length), new: %s"
               "(%d length). old:d_count: %d, new:d_count: %d\n",
               old_name, old_length, new_name, new_length,
               atomic_read(&old_dentry->d_count), atomic_read(&new_dentry->d_count));
 
        error = venus_rename(old_dir->i_sb, coda_i2f(old_dir),
                             coda_i2f(new_dir), old_length, new_length,
                             (const char *) old_name, (const char *)new_name);
 
        if ( !error ) {
                if ( new_dentry->d_inode ) {
                        if ( S_ISDIR(new_dentry->d_inode->i_mode) )
                                link_adjust = 1;
 
                        coda_dir_changed(old_dir, -link_adjust);
                        coda_dir_changed(new_dir,  link_adjust);
                        coda_flag_inode(new_dentry->d_inode, C_VATTR);
                } else {
                        coda_flag_inode(old_dir, C_VATTR);
                        coda_flag_inode(new_dir, C_VATTR);
                }
        }
 
        CDEBUG(D_INODE, "result %d\n", error);
 
        return error;
}
 
 
/* file operations for directories */
int coda_readdir(struct file *coda_file, void *dirent, filldir_t filldir)
{
        struct dentry *coda_dentry = coda_file->f_dentry;
        struct coda_file_info *cfi;
        struct file *host_file;
        int ret;
 
        cfi = CODA_FTOC(coda_file);
        if (!cfi || cfi->cfi_magic != CODA_MAGIC) BUG();
        host_file = cfi->cfi_container;
 
        coda_vfs_stat.readdir++;
 
        down(&host_file->f_dentry->d_inode->i_sem);
        host_file->f_pos = coda_file->f_pos;
 
        if ( !host_file->f_op->readdir ) {
                /* Venus: we must read Venus dirents from the file */
                ret = coda_venus_readdir(host_file, filldir, dirent, coda_dentry);
        } else {
                /* potemkin case: we were handed a directory inode */
                /* We can't call vfs_readdir because we are already holding
                 * the inode semaphore. */
                ret = -ENOENT;
                if (!IS_DEADDIR(host_file->f_dentry->d_inode))
                        ret = host_file->f_op->readdir(host_file, filldir, dirent);
        }
 
        coda_file->f_pos = host_file->f_pos;
        up(&host_file->f_dentry->d_inode->i_sem);
 
        return ret;
}
 
static inline unsigned int CDT2DT(unsigned char cdt)
{
        unsigned int dt;
 
        switch(cdt) {
        case CDT_UNKNOWN: dt = DT_UNKNOWN; break;
        case CDT_FIFO:    dt = DT_FIFO;    break;
        case CDT_CHR:     dt = DT_CHR;     break;
        case CDT_DIR:     dt = DT_DIR;     break;
        case CDT_BLK:     dt = DT_BLK;     break;
        case CDT_REG:     dt = DT_REG;     break;
        case CDT_LNK:     dt = DT_LNK;     break;
        case CDT_SOCK:    dt = DT_SOCK;    break;
        case CDT_WHT:     dt = DT_WHT;     break;
        default:          dt = DT_UNKNOWN; break;
        }
        return dt;
}
 
/* support routines */
static int coda_venus_readdir(struct file *filp, filldir_t filldir,
                              void *dirent, struct dentry *dir)
{
        int result = 0; /* # of entries returned */
        struct venus_dirent *vdir;
        unsigned long vdir_size =
            (unsigned long)(&((struct venus_dirent *)0)->d_name);
        unsigned int type;
        struct qstr name;
        ino_t ino;
        int ret, i;
 
        vdir = (struct venus_dirent *)kmalloc(sizeof(*vdir), GFP_KERNEL);
        if (!vdir) return -ENOMEM;
 
        i = filp->f_pos;
        switch(i) {
        case 0:
                ret = filldir(dirent, ".", 1, 0, dir->d_inode->i_ino, DT_DIR);
                if (ret < 0) break;
                result++;
                filp->f_pos++;
                /* fallthrough */
        case 1:
                ret = filldir(dirent, "..", 2, 1, dir->d_parent->d_inode->i_ino, DT_DIR);
                if (ret < 0) break;
                result++;
                filp->f_pos++;
                /* fallthrough */
        default:
        while (1) {
                /* read entries from the directory file */
                ret = kernel_read(filp, filp->f_pos - 2, (char *)vdir,
                                  sizeof(*vdir));
                if (ret < 0) {
                        printk("coda_venus_readdir: read dir failed %d\n", ret);
                        break;
                }
                if (ret == 0) break; /* end of directory file reached */
 
                /* catch truncated reads */
                if (ret < vdir_size || ret < vdir_size + vdir->d_namlen) {
                        printk("coda_venus_readdir: short read: %ld\n",
                               filp->f_dentry->d_inode->i_ino);
                        ret = -EBADF;
                        break;
                }
                /* validate whether the directory file actually makes sense */
                if (vdir->d_reclen < vdir_size + vdir->d_namlen ||
                    vdir->d_namlen > CODA_MAXNAMLEN) {
                        printk("coda_venus_readdir: Invalid dir: %ld\n",
                               filp->f_dentry->d_inode->i_ino);
                        ret = -EBADF;
                        break;
                }
 
                name.len = vdir->d_namlen;
                name.name = vdir->d_name;
 
                /* Make sure we skip '.' and '..', we already got those */
                if (name.name[0] == '.' && (name.len == 1 ||
                    (vdir->d_name[1] == '.' && name.len == 2)))
                        vdir->d_fileno = name.len = 0;
 
                /* skip null entries */
                if (vdir->d_fileno && name.len) {
                        /* try to look up this entry in the dcache, that way
                         * userspace doesn't have to worry about breaking
                         * getcwd by having mismatched inode numbers for
                         * internal volume mountpoints. */
                        ino = find_inode_number(dir, &name);
                        if (!ino) ino = vdir->d_fileno;
 
                        type = CDT2DT(vdir->d_type);
                        ret = filldir(dirent, name.name, name.len, filp->f_pos,
                                      ino, type);
                        /* failure means no space for filling in this round */
                        if (ret < 0) break;
                        result++;
                }
                /* we'll always have progress because d_reclen is unsigned and
                 * we've already established it is non-zero. */
                filp->f_pos += vdir->d_reclen;
        }
        }
        kfree(vdir);
        return result ? result : ret;
}
 
/* called when a cache lookup succeeds */
static int coda_dentry_revalidate(struct dentry *de, int flags)
{
        struct inode *inode = de->d_inode;
        struct coda_inode_info *cii;
 
        if (!inode)
                return 1;
        lock_kernel();
        if (coda_isroot(inode))
                goto out;
        if (is_bad_inode(inode))
                goto bad;
 
        cii = ITOC(de->d_inode);
        if (!(cii->c_flags & (C_PURGE | C_FLUSH)))
                goto out;
 
        shrink_dcache_parent(de);
 
        /* propagate for a flush */
        if (cii->c_flags & C_FLUSH)
                coda_flag_inode_children(inode, C_FLUSH);
 
        if (atomic_read(&de->d_count) > 1) {
                /* pretend it's valid, but don't change the flags */
                CDEBUG(D_DOWNCALL, "BOOM for: ino %ld, %s\n",
                       de->d_inode->i_ino, coda_f2s(&cii->c_fid));
                goto out;
        }
 
        /* clear the flags. */
        cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH);
 
bad:
        unlock_kernel();
        return 0;
out:
        unlock_kernel();
        return 1;
}
 
/*
 * This is the callback from dput() when d_count is going to 0.
 * We use this to unhash dentries with bad inodes.
 */
static int coda_dentry_delete(struct dentry * dentry)
{
        int flags;
 
        if (!dentry->d_inode)
                return 0;
 
        flags = (ITOC(dentry->d_inode)->c_flags) & C_PURGE;
        if (is_bad_inode(dentry->d_inode) || flags) {
                CDEBUG(D_DOWNCALL, "bad inode, unhashing %s/%s, %ld\n",
                       dentry->d_parent->d_name.name, dentry->d_name.name,
                       dentry->d_inode->i_ino);
                return 1;
        }
        return 0;
}
 
 
 
/*
 * This is called when we want to check if the inode has
 * changed on the server.  Coda makes this easy since the
 * cache manager Venus issues a downcall to the kernel when this
 * happens
 */
int coda_revalidate_inode(struct dentry *dentry)
{
        struct coda_vattr attr;
        int error = 0;
        int old_mode;
        ino_t old_ino;
        struct inode *inode = dentry->d_inode;
        struct coda_inode_info *cii = ITOC(inode);
 
        CDEBUG(D_INODE, "revalidating: %*s/%*s\n",
               dentry->d_name.len, dentry->d_name.name,
               dentry->d_parent->d_name.len, dentry->d_parent->d_name.name);
 
        lock_kernel();
        if ( !cii->c_flags )
                goto ok;
 
        if (cii->c_flags & (C_VATTR | C_PURGE | C_FLUSH)) {
                error = venus_getattr(inode->i_sb, &(cii->c_fid), &attr);
                if ( error )
                        goto return_bad_inode;
 
                /* this inode may be lost if:
                   - it's ino changed
                   - type changes must be permitted for repair and
                   missing mount points.
                */
                old_mode = inode->i_mode;
                old_ino = inode->i_ino;
                coda_vattr_to_iattr(inode, &attr);
 
                if ((old_mode & S_IFMT) != (inode->i_mode & S_IFMT)) {
                        printk("Coda: inode %ld, fid %s changed type!\n",
                               inode->i_ino, coda_f2s(&(cii->c_fid)));
                }
 
                /* the following can happen when a local fid is replaced
                   with a global one, here we lose and declare the inode bad */
                if (inode->i_ino != old_ino)
                        goto return_bad_inode;
 
                coda_flag_inode_children(inode, C_FLUSH);
                cii->c_flags &= ~(C_VATTR | C_PURGE | C_FLUSH);
        }
 
ok:
        unlock_kernel();
        return 0;
 
return_bad_inode:
        unlock_kernel();
        return -EIO;
}
 
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[/] [or1k/] [tags/] [LINUX_2_4_26_OR32/] [linux/] [linux-2.4/] [fs/] [coda/] [dir.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1275	phoenix
2			`/*`
3			`* Directory operations for Coda filesystem`
4			`* Original version: (C) 1996 P. Braam and M. Callahan`
5			`* Rewritten for Linux 2.1. (C) 1997 Carnegie Mellon University`
6			`*`
7			`* Carnegie Mellon encourages users to contribute improvements to`
8			`* the Coda project. Contact Peter Braam (coda@cs.cmu.edu).`
9			`*/`
10
11			`#include <linux/types.h>`
12			`#include <linux/kernel.h>`
13			`#include <linux/sched.h>`
14			`#include <linux/fs.h>`
15			`#include <linux/file.h>`
16			`#include <linux/stat.h>`
17			`#include <linux/errno.h>`
18			`#include <linux/locks.h>`
19			`#include <linux/string.h>`
20			`#include <linux/smp_lock.h>`
21
22			`#include <asm/uaccess.h>`
23
24			`#include <linux/coda.h>`
25			`#include <linux/coda_linux.h>`
26			`#include <linux/coda_psdev.h>`
27			`#include <linux/coda_fs_i.h>`
28			`#include <linux/coda_cache.h>`
29			`#include <linux/coda_proc.h>`
30
31			`/* dir inode-ops */`
32			`static int coda_create(struct inode dir, struct dentry new, int mode);`
33			`static int coda_mknod(struct inode dir, struct dentry new, int mode, int rdev);`
34			`static struct dentry coda_lookup(struct inode dir, struct dentry *target);`
35			`static int coda_link(struct dentry old_dentry, struct inode dir_inode,`
36			`struct dentry *entry);`
37			`static int coda_unlink(struct inode dir_inode, struct dentry entry);`
38			`static int coda_symlink(struct inode dir_inode, struct dentry entry,`
39			`const char *symname);`
40			`static int coda_mkdir(struct inode dir_inode, struct dentry entry, int mode);`