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Merge tag 'ovl-fixes-4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs

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Miklos writes:
  "overlayfs fixes for 4.19-rc7

   This update fixes a couple of regressions in the stacked file update
   added in this cycle, as well as some older bugs uncovered by
   syzkaller.

   There's also one trivial naming change that touches other parts of
   the fs subsystem."

* tag 'ovl-fixes-4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: fix format of setxattr debug
  ovl: fix access beyond unterminated strings
  ovl: make symbol 'ovl_aops' static
  vfs: swap names of {do,vfs}_clone_file_range()
  ovl: fix freeze protection bypass in ovl_clone_file_range()
  ovl: fix freeze protection bypass in ovl_write_iter()
  ovl: fix memory leak on unlink of indexed file
This commit is contained in:
Greg Kroah-Hartman
2018-10-04 13:24:38 -07:00
parent ac0657edb1 1a8f8d2a44
commit 010bd965f9
10 changed files with 30 additions and 24 deletions
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17
include/linux/fs.h
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@@ -1828,8 +1828,10 @@ extern ssize_t vfs_copy_file_range(struct file *, loff_t , struct file *,
extern int vfs_clone_file_prep_inodes(struct inode *inode_in, loff_t pos_in,
struct inode *inode_out, loff_t pos_out,
u64 *len, bool is_dedupe);
extern int do_clone_file_range(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out, u64 len);
extern int vfs_clone_file_range(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out, u64 len);
struct file *file_out, loff_t pos_out, u64 len);
extern int vfs_dedupe_file_range_compare(struct inode *src, loff_t srcoff,
struct inode *dest, loff_t destoff,
loff_t len, bool *is_same);
@@ -2773,19 +2775,6 @@ static inline void file_end_write(struct file *file)
__sb_end_write(file_inode(file)->i_sb, SB_FREEZE_WRITE);
}
static inline int do_clone_file_range(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out,
u64 len)
{
int ret;
file_start_write(file_out);
ret = vfs_clone_file_range(file_in, pos_in, file_out, pos_out, len);
file_end_write(file_out);
return ret;
}
/*
* get_write_access() gets write permission for a file.
* put_write_access() releases this write permission.