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authorAl Viro <viro@zeniv.linux.org.uk>2010-03-23 17:37:36 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2010-05-22 02:31:17 +0400
commit7ed1ee6118ae77330cae2a6d5e9383532f7dfb48 (patch)
tree5f91faf8ddb9b210f9f66b15bd5c82c04e9a54e9 /fs/open.c
parente8c26255992474a2161c63ce9d385827302e4530 (diff)
downloadlinux-7ed1ee6118ae77330cae2a6d5e9383532f7dfb48.tar.xz
Take statfs variants to fs/statfs.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/open.c')
-rw-r--r--fs/open.c166
1 files changed, 0 insertions, 166 deletions
diff --git a/fs/open.c b/fs/open.c
index 74e5cd9f718e..5463266db9e6 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -17,7 +17,6 @@
#include <linux/securebits.h>
#include <linux/security.h>
#include <linux/mount.h>
-#include <linux/vfs.h>
#include <linux/fcntl.h>
#include <linux/slab.h>
#include <asm/uaccess.h>
@@ -33,171 +32,6 @@
#include "internal.h"
-int vfs_statfs(struct dentry *dentry, struct kstatfs *buf)
-{
- int retval = -ENODEV;
-
- if (dentry) {
- retval = -ENOSYS;
- if (dentry->d_sb->s_op->statfs) {
- memset(buf, 0, sizeof(*buf));
- retval = security_sb_statfs(dentry);
- if (retval)
- return retval;
- retval = dentry->d_sb->s_op->statfs(dentry, buf);
- if (retval == 0 && buf->f_frsize == 0)
- buf->f_frsize = buf->f_bsize;
- }
- }
- return retval;
-}
-
-EXPORT_SYMBOL(vfs_statfs);
-
-static int vfs_statfs_native(struct dentry *dentry, struct statfs *buf)
-{
- struct kstatfs st;
- int retval;
-
- retval = vfs_statfs(dentry, &st);
- if (retval)
- return retval;
-
- if (sizeof(*buf) == sizeof(st))
- memcpy(buf, &st, sizeof(st));
- else {
- if (sizeof buf->f_blocks == 4) {
- if ((st.f_blocks | st.f_bfree | st.f_bavail |
- st.f_bsize | st.f_frsize) &
- 0xffffffff00000000ULL)
- return -EOVERFLOW;
- /*
- * f_files and f_ffree may be -1; it's okay to stuff
- * that into 32 bits
- */
- if (st.f_files != -1 &&
- (st.f_files & 0xffffffff00000000ULL))
- return -EOVERFLOW;
- if (st.f_ffree != -1 &&
- (st.f_ffree & 0xffffffff00000000ULL))
- return -EOVERFLOW;
- }
-
- buf->f_type = st.f_type;
- buf->f_bsize = st.f_bsize;
- buf->f_blocks = st.f_blocks;
- buf->f_bfree = st.f_bfree;
- buf->f_bavail = st.f_bavail;
- buf->f_files = st.f_files;
- buf->f_ffree = st.f_ffree;
- buf->f_fsid = st.f_fsid;
- buf->f_namelen = st.f_namelen;
- buf->f_frsize = st.f_frsize;
- memset(buf->f_spare, 0, sizeof(buf->f_spare));
- }
- return 0;
-}
-
-static int vfs_statfs64(struct dentry *dentry, struct statfs64 *buf)
-{
- struct kstatfs st;
- int retval;
-
- retval = vfs_statfs(dentry, &st);
- if (retval)
- return retval;
-
- if (sizeof(*buf) == sizeof(st))
- memcpy(buf, &st, sizeof(st));
- else {
- buf->f_type = st.f_type;
- buf->f_bsize = st.f_bsize;
- buf->f_blocks = st.f_blocks;
- buf->f_bfree = st.f_bfree;
- buf->f_bavail = st.f_bavail;
- buf->f_files = st.f_files;
- buf->f_ffree = st.f_ffree;
- buf->f_fsid = st.f_fsid;
- buf->f_namelen = st.f_namelen;
- buf->f_frsize = st.f_frsize;
- memset(buf->f_spare, 0, sizeof(buf->f_spare));
- }
- return 0;
-}
-
-SYSCALL_DEFINE2(statfs, const char __user *, pathname, struct statfs __user *, buf)
-{
- struct path path;
- int error;
-
- error = user_path(pathname, &path);
- if (!error) {
- struct statfs tmp;
- error = vfs_statfs_native(path.dentry, &tmp);
- if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
- error = -EFAULT;
- path_put(&path);
- }
- return error;
-}
-
-SYSCALL_DEFINE3(statfs64, const char __user *, pathname, size_t, sz, struct statfs64 __user *, buf)
-{
- struct path path;
- long error;
-
- if (sz != sizeof(*buf))
- return -EINVAL;
- error = user_path(pathname, &path);
- if (!error) {
- struct statfs64 tmp;
- error = vfs_statfs64(path.dentry, &tmp);
- if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
- error = -EFAULT;
- path_put(&path);
- }
- return error;
-}
-
-SYSCALL_DEFINE2(fstatfs, unsigned int, fd, struct statfs __user *, buf)
-{
- struct file * file;
- struct statfs tmp;
- int error;
-
- error = -EBADF;
- file = fget(fd);
- if (!file)
- goto out;
- error = vfs_statfs_native(file->f_path.dentry, &tmp);
- if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
- error = -EFAULT;
- fput(file);
-out:
- return error;
-}
-
-SYSCALL_DEFINE3(fstatfs64, unsigned int, fd, size_t, sz, struct statfs64 __user *, buf)
-{
- struct file * file;
- struct statfs64 tmp;
- int error;
-
- if (sz != sizeof(*buf))
- return -EINVAL;
-
- error = -EBADF;
- file = fget(fd);
- if (!file)
- goto out;
- error = vfs_statfs64(file->f_path.dentry, &tmp);
- if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
- error = -EFAULT;
- fput(file);
-out:
- return error;
-}
-
int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
struct file *filp)
{