VServer 1.9.2 (patch-2.6.8.1-vs1.9.2.diff)

[linux-2.6.git] / fs / open.c

diff --git a/fs/open.c b/fs/open.c
index 1ded0f7..4bd34f4 100644 (file)
--- a/fs/open.c
+++ b/fs/open.c
@@ -22,8 +22,13 @@
 #include <asm/uaccess.h>
 #include <linux/fs.h>
 #include <linux/pagemap.h>
+#include <linux/vs_base.h>
+#include <linux/vs_limit.h>
+#include <linux/vs_dlimit.h>
 #include <linux/vserver/xid.h>
 
+#include <asm/unistd.h>
+
 int vfs_statfs(struct super_block *sb, struct kstatfs *buf)
 {
        int retval = -ENODEV;
@@ -39,6 +44,8 @@ int vfs_statfs(struct super_block *sb, struct kstatfs *buf)
                        if (retval == 0 && buf->f_frsize == 0)
                                buf->f_frsize = buf->f_bsize;
                }
+               if (!vx_check(0, VX_ADMIN|VX_WATCH))
+                       vx_vsi_statfs(sb, buf);
        }
        return retval;
 }
@@ -336,7 +343,7 @@ asmlinkage long sys_ftruncate64(unsigned int fd, loff_t length)
 }
 #endif
 
-#if !(defined(__alpha__) || defined(__ia64__))
+#ifdef __ARCH_WANT_SYS_UTIME
 
 /*
  * sys_utime() can be implemented in user-level using sys_utimes().
@@ -606,9 +613,6 @@ asmlinkage long sys_fchmod(unsigned int fd, mode_t mode)
        dentry = file->f_dentry;
        inode = dentry->d_inode;
 
-       err = -EPERM;
-       if (IS_BARRIER(inode) && !vx_check(0, VX_ADMIN))
-               goto out_putf;
        err = -EROFS;
        if (IS_RDONLY(inode))
                goto out_putf;
@@ -641,10 +645,6 @@ asmlinkage long sys_chmod(const char __user * filename, mode_t mode)
                goto out;
        inode = nd.dentry->d_inode;
 
-       error = -EPERM;
-       if (IS_BARRIER(inode) && !vx_check(0, VX_ADMIN))
-               goto dput_and_out;
-
        error = -EROFS;
        if (IS_RDONLY(inode))
                goto dput_and_out;
@@ -788,7 +788,7 @@ struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
        if (!f)
                goto cleanup_dentry;
        f->f_flags = flags;
-       f->f_mode = (flags+1) & O_ACCMODE;
+       f->f_mode = ((flags+1) & O_ACCMODE) | FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE;
        inode = dentry->d_inode;
        if (f->f_mode & FMODE_WRITE) {
                error = get_write_access(inode);
@@ -797,7 +797,6 @@ struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
        }
 
        f->f_mapping = inode->i_mapping;
-       file_ra_state_init(&f->f_ra, f->f_mapping);
        f->f_dentry = dentry;
        f->f_vfsmnt = mnt;
        f->f_pos = 0;
@@ -811,12 +810,13 @@ struct file *dentry_open(struct dentry *dentry, struct vfsmount *mnt, int flags)
        }
        f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC);
 
+       file_ra_state_init(&f->f_ra, f->f_mapping->host->i_mapping);
+
        /* NB: we're sure to have correct a_ops only after f_op->open */
        if (f->f_flags & O_DIRECT) {
-               if (!f->f_mapping || !f->f_mapping->a_ops ||
-                       !f->f_mapping->a_ops->direct_IO) {
-                               fput(f);
-                               f = ERR_PTR(-EINVAL);
+               if (!f->f_mapping->a_ops || !f->f_mapping->a_ops->direct_IO) {
+                       fput(f);
+                       f = ERR_PTR(-EINVAL);
                }
        }
 
@@ -887,7 +887,7 @@ repeat:
        FD_SET(fd, files->open_fds);
        FD_CLR(fd, files->close_on_exec);
        files->next_fd = fd + 1;
-       vx_openfd_inc(fd);
+       // vx_openfd_inc(fd);
 #if 1
        /* Sanity check */
        if (files->fd[fd] != NULL) {
@@ -909,6 +909,7 @@ static inline void __put_unused_fd(struct files_struct *files, unsigned int fd)
        __FD_CLR(fd, files->open_fds);
        if (fd < files->next_fd)
                files->next_fd = fd;
+       // vx_openfd_dec(fd);
 }
 
 void fastcall put_unused_fd(unsigned int fd)
@@ -1042,7 +1043,6 @@ asmlinkage long sys_close(unsigned int fd)
        FD_CLR(fd, files->close_on_exec);
        __put_unused_fd(files, fd);
        spin_unlock(&files->file_lock);
-       vx_openfd_dec(fd);
        return filp_close(filp, files);
 
 out_unlock:
@@ -1079,3 +1079,15 @@ int generic_file_open(struct inode * inode, struct file * filp)
 }
 
 EXPORT_SYMBOL(generic_file_open);
+
+/*
+ * This is used by subsystems that don't want seekable
+ * file descriptors
+ */
+int nonseekable_open(struct inode *inode, struct file *filp)
+{
+       filp->f_mode &= ~(FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE);
+       return 0;
+}
+
+EXPORT_SYMBOL(nonseekable_open);