On 2020/7/18 14:15, Daeho Jeong wrote:
> From: Daeho Jeong
>
> Added a new ioctl to send discard commands or/and zero out
> to selected data area of a regular file for security reason.
>
> The way of handling range.len of F2FS_IOC_SEC_TRIM_FILE:
> 1. Added -1 value support for range.len to secur
From: Daeho Jeong
Added a new ioctl to send discard commands or/and zero out
to selected data area of a regular file for security reason.
The way of handling range.len of F2FS_IOC_SEC_TRIM_FILE:
1. Added -1 value support for range.len to secure trim the whole blocks
starting from range.start
On Fri, Jun 12, 2020 at 09:00:58AM +0900, Daeho Jeong wrote:
> For the incremental way of erasing, we might as well support the
> (offset, length) option in a unit of 4KiB.
>
> So, you might use this ioctl like the below. Does it work for you?
> struct f2fs_sec_trim {
> u64 startblk;
>
For the incremental way of erasing, we might as well support the
(offset, length) option in a unit of 4KiB.
So, you might use this ioctl like the below. Does it work for you?
struct f2fs_sec_trim {
u64 startblk;
u64 blklen;
u32 flags;
};
sectrim.startblk = 0;
sectrim.blkle
On Fri, Jun 12, 2020 at 07:49:12AM +0900, Daeho Jeong wrote:
> 2020년 6월 12일 (금) 오전 1:27, Eric Biggers 님이 작성:
> >
> > On Thu, Jun 11, 2020 at 12:16:52PM +0900, Daeho Jeong wrote:
> > > + for (index = pg_start; index < pg_end;) {
> > > + struct dnode_of_data dn;
> > > + un
2020년 6월 12일 (금) 오전 1:27, Eric Biggers 님이 작성:
>
> On Thu, Jun 11, 2020 at 12:16:52PM +0900, Daeho Jeong wrote:
> > + for (index = pg_start; index < pg_end;) {
> > + struct dnode_of_data dn;
> > + unsigned int end_offset;
> > +
> > + set_new_dnode(&dn, inode,
On Thu, Jun 11, 2020 at 12:16:52PM +0900, Daeho Jeong wrote:
> + for (index = pg_start; index < pg_end;) {
> + struct dnode_of_data dn;
> + unsigned int end_offset;
> +
> + set_new_dnode(&dn, inode, NULL, NULL, 0);
> + ret = f2fs_get_dnode_of_data
On Thu, Jun 11, 2020 at 08:04:06PM +0900, Daeho Jeong wrote:
> > > +static int f2fs_sec_trim_file(struct file *filp, unsigned long arg)
> > > +{
> > > + struct inode *inode = file_inode(filp);
> > > + struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
> > > + struct address_space *mapping = i
2020년 6월 11일 (목) 오후 5:56, Chao Yu 님이 작성:
>
> On 2020/6/11 11:16, Daeho Jeong wrote:
> > From: Daeho Jeong
> >
> > Added a new ioctl to send discard commands or/and zero out
> > to whole data area of a regular file for security reason.
> >
> > Signed-off-by: Daeho Jeong
> > ---
> > fs/f2fs/f2fs.h
On 2020/6/11 11:16, Daeho Jeong wrote:
> From: Daeho Jeong
>
> Added a new ioctl to send discard commands or/and zero out
> to whole data area of a regular file for security reason.
>
> Signed-off-by: Daeho Jeong
> ---
> fs/f2fs/f2fs.h | 8 +++
> fs/f2fs/file.c | 143
From: Daeho Jeong
Added a new ioctl to send discard commands or/and zero out
to whole data area of a regular file for security reason.
Signed-off-by: Daeho Jeong
---
fs/f2fs/f2fs.h | 8 +++
fs/f2fs/file.c | 143 +
2 files changed, 151 insertion
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