iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

bcachefs: Support FS_XFLAG_PROJINHERIT

Browse Source 
We already have support for the flag's semantics: inode options are
inherited by children if they were explicitly set on the parent. This
patch just maps the FS_XFLAG_PROJINHERIT flag to the "this option was
epxlicitly set" bit.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2022-10-12 16:21:08 -04:00
parent bf9cb250ed
commit 65ff2d3a7a
1 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
fs/bcachefs/fs-ioctl.c
View File

@ -26,6 +26,9 @@ struct flags_set {
unsigned flags;
unsigned projid;
bool set_projinherit;
bool projinherit;
};
static int bch2_inode_flags_set(struct bch_inode_info *inode,
@ -50,6 +53,11 @@ static int bch2_inode_flags_set(struct bch_inode_info *inode,
(newflags & (BCH_INODE_NODUMP|BCH_INODE_NOATIME)) != newflags)
return -EINVAL;
if (s->set_projinherit) {
bi->bi_fields_set &= ~(1 << Inode_opt_project);
bi->bi_fields_set |= ((int) s->projinherit << Inode_opt_project);
}
bi->bi_flags &= ~s->mask;
bi->bi_flags |= newflags;
@ -107,6 +115,10 @@ static int bch2_ioc_fsgetxattr(struct bch_inode_info *inode,
struct fsxattr fa = { 0 };
fa.fsx_xflags = map_flags(bch_flags_to_xflags, inode->ei_inode.bi_flags);
if (inode->ei_inode.bi_fields_set & (1 << Inode_opt_project))
fa.fsx_xflags |= FS_XFLAG_PROJINHERIT;
fa.fsx_projid = inode->ei_qid.q[QTYP_PRJ];
return copy_to_user(arg, &fa, sizeof(fa));
@ -138,6 +150,10 @@ static int bch2_ioc_fssetxattr(struct bch_fs *c,
if (copy_from_user(&fa, arg, sizeof(fa)))
return -EFAULT;
s.set_projinherit = true;
s.projinherit = (fa.fsx_xflags & FS_XFLAG_PROJINHERIT) != 0;
fa.fsx_xflags &= ~FS_XFLAG_PROJINHERIT;
s.flags = map_flags_rev(bch_flags_to_xflags, fa.fsx_xflags);
if (fa.fsx_xflags)
return -EOPNOTSUPP;