mm: variable length argument support

[pandora-kernel.git] / fs / gfs2 / ops_export.c

diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index aad9183..b8312ed 100644 (file)
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -11,6 +11,7 @@
 #include <linux/spinlock.h>
 #include <linux/completion.h>
 #include <linux/buffer_head.h>
+#include <linux/exportfs.h>
 #include <linux/gfs2_ondisk.h>
 #include <linux/crc32.h>
 #include <linux/lm_interface.h>
@@ -22,10 +23,14 @@
 #include "glops.h"
 #include "inode.h"
 #include "ops_dentry.h"
-#include "ops_export.h"
+#include "ops_fstype.h"
 #include "rgrp.h"
 #include "util.h"
 
+#define GFS2_SMALL_FH_SIZE 4
+#define GFS2_LARGE_FH_SIZE 8
+#define GFS2_OLD_FH_SIZE 10
+
 static struct dentry *gfs2_decode_fh(struct super_block *sb,
                                     __u32 *p,
                                     int fh_len,
@@ -35,31 +40,28 @@ static struct dentry *gfs2_decode_fh(struct super_block *sb,
                                     void *context)
 {
        __be32 *fh = (__force __be32 *)p;
-       struct gfs2_fh_obj fh_obj;
-       struct gfs2_inum_host *this, parent;
+       struct gfs2_inum_host inum, parent;
 
-       this            = &fh_obj.this;
-       fh_obj.imode    = DT_UNKNOWN;
        memset(&parent, 0, sizeof(struct gfs2_inum));
 
        switch (fh_len) {
        case GFS2_LARGE_FH_SIZE:
+       case GFS2_OLD_FH_SIZE:
                parent.no_formal_ino = ((u64)be32_to_cpu(fh[4])) << 32;
                parent.no_formal_ino |= be32_to_cpu(fh[5]);
                parent.no_addr = ((u64)be32_to_cpu(fh[6])) << 32;
                parent.no_addr |= be32_to_cpu(fh[7]);
-               fh_obj.imode = be32_to_cpu(fh[8]);
        case GFS2_SMALL_FH_SIZE:
-               this->no_formal_ino = ((u64)be32_to_cpu(fh[0])) << 32;
-               this->no_formal_ino |= be32_to_cpu(fh[1]);
-               this->no_addr = ((u64)be32_to_cpu(fh[2])) << 32;
-               this->no_addr |= be32_to_cpu(fh[3]);
+               inum.no_formal_ino = ((u64)be32_to_cpu(fh[0])) << 32;
+               inum.no_formal_ino |= be32_to_cpu(fh[1]);
+               inum.no_addr = ((u64)be32_to_cpu(fh[2])) << 32;
+               inum.no_addr |= be32_to_cpu(fh[3]);
                break;
        default:
                return NULL;
        }
 
-       return gfs2_export_ops.find_exported_dentry(sb, &fh_obj, &parent,
+       return gfs2_export_ops.find_exported_dentry(sb, &inum, &parent,
                                                    acceptable, context);
 }
 
@@ -75,10 +77,10 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *p, int *len,
            (connectable && *len < GFS2_LARGE_FH_SIZE))
                return 255;
 
-       fh[0] = cpu_to_be32(ip->i_num.no_formal_ino >> 32);
-       fh[1] = cpu_to_be32(ip->i_num.no_formal_ino & 0xFFFFFFFF);
-       fh[2] = cpu_to_be32(ip->i_num.no_addr >> 32);
-       fh[3] = cpu_to_be32(ip->i_num.no_addr & 0xFFFFFFFF);
+       fh[0] = cpu_to_be32(ip->i_no_formal_ino >> 32);
+       fh[1] = cpu_to_be32(ip->i_no_formal_ino & 0xFFFFFFFF);
+       fh[2] = cpu_to_be32(ip->i_no_addr >> 32);
+       fh[3] = cpu_to_be32(ip->i_no_addr & 0xFFFFFFFF);
        *len = GFS2_SMALL_FH_SIZE;
 
        if (!connectable || inode == sb->s_root->d_inode)
@@ -90,13 +92,10 @@ static int gfs2_encode_fh(struct dentry *dentry, __u32 *p, int *len,
        igrab(inode);
        spin_unlock(&dentry->d_lock);
 
-       fh[4] = cpu_to_be32(ip->i_num.no_formal_ino >> 32);
-       fh[5] = cpu_to_be32(ip->i_num.no_formal_ino & 0xFFFFFFFF);
-       fh[6] = cpu_to_be32(ip->i_num.no_addr >> 32);
-       fh[7] = cpu_to_be32(ip->i_num.no_addr & 0xFFFFFFFF);
-
-       fh[8]  = cpu_to_be32(inode->i_mode);
-       fh[9]  = 0;     /* pad to double word */
+       fh[4] = cpu_to_be32(ip->i_no_formal_ino >> 32);
+       fh[5] = cpu_to_be32(ip->i_no_formal_ino & 0xFFFFFFFF);
+       fh[6] = cpu_to_be32(ip->i_no_addr >> 32);
+       fh[7] = cpu_to_be32(ip->i_no_addr & 0xFFFFFFFF);
        *len = GFS2_LARGE_FH_SIZE;
 
        iput(inode);
@@ -144,7 +143,8 @@ static int gfs2_get_name(struct dentry *parent, char *name,
        ip = GFS2_I(inode);
 
        *name = 0;
-       gnfd.inum = ip->i_num;
+       gnfd.inum.no_addr = ip->i_no_addr;
+       gnfd.inum.no_formal_ino = ip->i_no_formal_ino;
        gnfd.name = name;
 
        error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &gh);
@@ -192,8 +192,7 @@ static struct dentry *gfs2_get_parent(struct dentry *child)
 static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
 {
        struct gfs2_sbd *sdp = sb->s_fs_info;
-       struct gfs2_fh_obj *fh_obj = (struct gfs2_fh_obj *)inum_obj;
-       struct gfs2_inum_host *inum = &fh_obj->this;
+       struct gfs2_inum_host *inum = inum_obj;
        struct gfs2_holder i_gh, ri_gh, rgd_gh;
        struct gfs2_rgrpd *rgd;
        struct inode *inode;
@@ -202,9 +201,9 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
 
        /* System files? */
 
-       inode = gfs2_ilookup(sb, inum);
+       inode = gfs2_ilookup(sb, inum->no_addr);
        if (inode) {
-               if (GFS2_I(inode)->i_num.no_formal_ino != inum->no_formal_ino) {
+               if (GFS2_I(inode)->i_no_formal_ino != inum->no_formal_ino) {
                        iput(inode);
                        return ERR_PTR(-ESTALE);
                }
@@ -236,7 +235,9 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
        gfs2_glock_dq_uninit(&rgd_gh);
        gfs2_glock_dq_uninit(&ri_gh);
 
-       inode = gfs2_inode_lookup(sb, inum, fh_obj->imode);
+       inode = gfs2_inode_lookup(sb, DT_UNKNOWN,
+                                       inum->no_addr,
+                                       0);
        if (!inode)
                goto fail;
        if (IS_ERR(inode)) {
@@ -250,6 +251,15 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb, void *inum_obj)
                goto fail;
        }
 
+       /* Pick up the works we bypass in gfs2_inode_lookup */
+       if (inode->i_state & I_NEW) 
+               gfs2_set_iop(inode);
+
+       if (GFS2_I(inode)->i_no_formal_ino != inum->no_formal_ino) {
+               iput(inode);
+               goto fail;
+       }
+
        error = -EIO;
        if (GFS2_I(inode)->i_di.di_flags & GFS2_DIF_SYSTEM) {
                iput(inode);