* [f2fs-dev] [PATCH 0/3] f2fs: use generic helpers for FS_IOC_{SETFLAGS, FSSETXATTR} @ 2019-07-01 20:26 Eric Biggers 2019-07-01 20:26 ` [f2fs-dev] [PATCH 1/3] f2fs: use generic checking and prep function for FS_IOC_SETFLAGS Eric Biggers ` (2 more replies) 0 siblings, 3 replies; 10+ messages in thread From: Eric Biggers @ 2019-07-01 20:26 UTC (permalink / raw) To: Darrick J . Wong; +Cc: linux-fsdevel, Jaegeuk Kim, linux-f2fs-devel This series converts f2fs to use the new VFS helper functions that check the parameters of the FS_IOC_SETFLAGS and FS_IOC_FSSETXATTR ioctls. This applies to the merge of the f2fs/dev and xfs/vfs-for-next branches: https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git/log/?h=dev https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/log/?h=vfs-for-next i.e., this series will apply to mainline after these two branches get merged into it for 5.3. Don't apply it to the f2fs tree by itself yet. See: https://lore.kernel.org/lkml/20190701110603.5abcbb2c@canb.auug.org.au/T/#u Eric Biggers (3): f2fs: use generic checking and prep function for FS_IOC_SETFLAGS f2fs: use generic checking function for FS_IOC_FSSETXATTR f2fs: remove redundant check from f2fs_setflags_common() fs/f2fs/file.c | 63 ++++++++++++++++++-------------------------------- 1 file changed, 23 insertions(+), 40 deletions(-) -- 2.22.0.410.gd8fdbe21b5-goog _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply [flat|nested] 10+ messages in thread
* [f2fs-dev] [PATCH 1/3] f2fs: use generic checking and prep function for FS_IOC_SETFLAGS 2019-07-01 20:26 [f2fs-dev] [PATCH 0/3] f2fs: use generic helpers for FS_IOC_{SETFLAGS, FSSETXATTR} Eric Biggers @ 2019-07-01 20:26 ` Eric Biggers 2019-07-03 1:58 ` Chao Yu 2019-07-07 20:41 ` Darrick J. Wong 2019-07-01 20:26 ` [f2fs-dev] [PATCH 2/3] f2fs: use generic checking function for FS_IOC_FSSETXATTR Eric Biggers 2019-07-01 20:26 ` [f2fs-dev] [PATCH 3/3] f2fs: remove redundant check from f2fs_setflags_common() Eric Biggers 2 siblings, 2 replies; 10+ messages in thread From: Eric Biggers @ 2019-07-01 20:26 UTC (permalink / raw) To: Darrick J . Wong; +Cc: linux-fsdevel, Jaegeuk Kim, linux-f2fs-devel From: Eric Biggers <ebiggers@google.com> Make the f2fs implementation of FS_IOC_SETFLAGS use the new VFS helper function vfs_ioc_setflags_prepare(). This is based on a patch from Darrick Wong, but reworked to apply after commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags"). Originally-from: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Eric Biggers <ebiggers@google.com> --- fs/f2fs/file.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index e7c368db81851f..b5b941e6448657 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1765,7 +1765,8 @@ static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) { struct inode *inode = file_inode(filp); - u32 fsflags; + struct f2fs_inode_info *fi = F2FS_I(inode); + u32 fsflags, old_fsflags; u32 iflags; int ret; @@ -1789,8 +1790,14 @@ static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) inode_lock(inode); + old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags); + ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags); + if (ret) + goto out; + ret = f2fs_setflags_common(inode, iflags, f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL)); +out: inode_unlock(inode); mnt_drop_write_file(filp); return ret; -- 2.22.0.410.gd8fdbe21b5-goog _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [f2fs-dev] [PATCH 1/3] f2fs: use generic checking and prep function for FS_IOC_SETFLAGS 2019-07-01 20:26 ` [f2fs-dev] [PATCH 1/3] f2fs: use generic checking and prep function for FS_IOC_SETFLAGS Eric Biggers @ 2019-07-03 1:58 ` Chao Yu 2019-07-07 20:41 ` Darrick J. Wong 1 sibling, 0 replies; 10+ messages in thread From: Chao Yu @ 2019-07-03 1:58 UTC (permalink / raw) To: Eric Biggers, Darrick J . Wong Cc: linux-fsdevel, Jaegeuk Kim, linux-f2fs-devel On 2019/7/2 4:26, Eric Biggers wrote: > From: Eric Biggers <ebiggers@google.com> > > Make the f2fs implementation of FS_IOC_SETFLAGS use the new VFS helper > function vfs_ioc_setflags_prepare(). > > This is based on a patch from Darrick Wong, but reworked to apply after > commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 > i_flags"). > > Originally-from: Darrick J. Wong <darrick.wong@oracle.com> > Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Thanks, _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [f2fs-dev] [PATCH 1/3] f2fs: use generic checking and prep function for FS_IOC_SETFLAGS 2019-07-01 20:26 ` [f2fs-dev] [PATCH 1/3] f2fs: use generic checking and prep function for FS_IOC_SETFLAGS Eric Biggers 2019-07-03 1:58 ` Chao Yu @ 2019-07-07 20:41 ` Darrick J. Wong 1 sibling, 0 replies; 10+ messages in thread From: Darrick J. Wong @ 2019-07-07 20:41 UTC (permalink / raw) To: Eric Biggers; +Cc: linux-fsdevel, Jaegeuk Kim, linux-f2fs-devel On Mon, Jul 01, 2019 at 01:26:28PM -0700, Eric Biggers wrote: > From: Eric Biggers <ebiggers@google.com> > > Make the f2fs implementation of FS_IOC_SETFLAGS use the new VFS helper > function vfs_ioc_setflags_prepare(). > > This is based on a patch from Darrick Wong, but reworked to apply after > commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 > i_flags"). > > Originally-from: Darrick J. Wong <darrick.wong@oracle.com> > Signed-off-by: Eric Biggers <ebiggers@google.com> LGTM, Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> --D > --- > fs/f2fs/file.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c > index e7c368db81851f..b5b941e6448657 100644 > --- a/fs/f2fs/file.c > +++ b/fs/f2fs/file.c > @@ -1765,7 +1765,8 @@ static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) > static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) > { > struct inode *inode = file_inode(filp); > - u32 fsflags; > + struct f2fs_inode_info *fi = F2FS_I(inode); > + u32 fsflags, old_fsflags; > u32 iflags; > int ret; > > @@ -1789,8 +1790,14 @@ static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) > > inode_lock(inode); > > + old_fsflags = f2fs_iflags_to_fsflags(fi->i_flags); > + ret = vfs_ioc_setflags_prepare(inode, old_fsflags, fsflags); > + if (ret) > + goto out; > + > ret = f2fs_setflags_common(inode, iflags, > f2fs_fsflags_to_iflags(F2FS_SETTABLE_FS_FL)); > +out: > inode_unlock(inode); > mnt_drop_write_file(filp); > return ret; > -- > 2.22.0.410.gd8fdbe21b5-goog > _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply [flat|nested] 10+ messages in thread
* [f2fs-dev] [PATCH 2/3] f2fs: use generic checking function for FS_IOC_FSSETXATTR 2019-07-01 20:26 [f2fs-dev] [PATCH 0/3] f2fs: use generic helpers for FS_IOC_{SETFLAGS, FSSETXATTR} Eric Biggers 2019-07-01 20:26 ` [f2fs-dev] [PATCH 1/3] f2fs: use generic checking and prep function for FS_IOC_SETFLAGS Eric Biggers @ 2019-07-01 20:26 ` Eric Biggers 2019-07-03 1:58 ` Chao Yu 2019-07-07 20:41 ` Darrick J. Wong 2019-07-01 20:26 ` [f2fs-dev] [PATCH 3/3] f2fs: remove redundant check from f2fs_setflags_common() Eric Biggers 2 siblings, 2 replies; 10+ messages in thread From: Eric Biggers @ 2019-07-01 20:26 UTC (permalink / raw) To: Darrick J . Wong; +Cc: linux-fsdevel, Jaegeuk Kim, linux-f2fs-devel From: Eric Biggers <ebiggers@google.com> Make the f2fs implementation of FS_IOC_FSSETXATTR use the new VFS helper function vfs_ioc_fssetxattr_check(), and remove the project quota check since it's now done by the helper function. This is based on a patch from Darrick Wong, but reworked to apply after commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags"). Originally-from: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Eric Biggers <ebiggers@google.com> --- fs/f2fs/file.c | 45 ++++++++++++++------------------------------- 1 file changed, 14 insertions(+), 31 deletions(-) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index b5b941e6448657..ae1a54ecc9fccc 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -2857,52 +2857,32 @@ static inline u32 f2fs_xflags_to_iflags(u32 xflags) return iflags; } -static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) +static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa) { - struct inode *inode = file_inode(filp); struct f2fs_inode_info *fi = F2FS_I(inode); - struct fsxattr fa; - memset(&fa, 0, sizeof(struct fsxattr)); - fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags); + simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags)); if (f2fs_sb_has_project_quota(F2FS_I_SB(inode))) - fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, - fi->i_projid); - - if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) - return -EFAULT; - return 0; + fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid); } -static int f2fs_ioctl_check_project(struct inode *inode, struct fsxattr *fa) +static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) { - /* - * Project Quota ID state is only allowed to change from within the init - * namespace. Enforce that restriction only if we are trying to change - * the quota ID state. Everything else is allowed in user namespaces. - */ - if (current_user_ns() == &init_user_ns) - return 0; - - if (__kprojid_val(F2FS_I(inode)->i_projid) != fa->fsx_projid) - return -EINVAL; + struct inode *inode = file_inode(filp); + struct fsxattr fa; - if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) { - if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT)) - return -EINVAL; - } else { - if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT) - return -EINVAL; - } + f2fs_fill_fsxattr(inode, &fa); + if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) + return -EFAULT; return 0; } static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) { struct inode *inode = file_inode(filp); - struct fsxattr fa; + struct fsxattr fa, old_fa; u32 iflags; int err; @@ -2925,9 +2905,12 @@ static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) return err; inode_lock(inode); - err = f2fs_ioctl_check_project(inode, &fa); + + f2fs_fill_fsxattr(inode, &old_fa); + err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa); if (err) goto out; + err = f2fs_setflags_common(inode, iflags, f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS)); if (err) -- 2.22.0.410.gd8fdbe21b5-goog _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [f2fs-dev] [PATCH 2/3] f2fs: use generic checking function for FS_IOC_FSSETXATTR 2019-07-01 20:26 ` [f2fs-dev] [PATCH 2/3] f2fs: use generic checking function for FS_IOC_FSSETXATTR Eric Biggers @ 2019-07-03 1:58 ` Chao Yu 2019-07-07 20:41 ` Darrick J. Wong 1 sibling, 0 replies; 10+ messages in thread From: Chao Yu @ 2019-07-03 1:58 UTC (permalink / raw) To: Eric Biggers, Darrick J . Wong Cc: linux-fsdevel, Jaegeuk Kim, linux-f2fs-devel On 2019/7/2 4:26, Eric Biggers wrote: > From: Eric Biggers <ebiggers@google.com> > > Make the f2fs implementation of FS_IOC_FSSETXATTR use the new VFS helper > function vfs_ioc_fssetxattr_check(), and remove the project quota check > since it's now done by the helper function. > > This is based on a patch from Darrick Wong, but reworked to apply after > commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 > i_flags"). > > Originally-from: Darrick J. Wong <darrick.wong@oracle.com> > Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Thanks, _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [f2fs-dev] [PATCH 2/3] f2fs: use generic checking function for FS_IOC_FSSETXATTR 2019-07-01 20:26 ` [f2fs-dev] [PATCH 2/3] f2fs: use generic checking function for FS_IOC_FSSETXATTR Eric Biggers 2019-07-03 1:58 ` Chao Yu @ 2019-07-07 20:41 ` Darrick J. Wong 1 sibling, 0 replies; 10+ messages in thread From: Darrick J. Wong @ 2019-07-07 20:41 UTC (permalink / raw) To: Eric Biggers; +Cc: linux-fsdevel, Jaegeuk Kim, linux-f2fs-devel On Mon, Jul 01, 2019 at 01:26:29PM -0700, Eric Biggers wrote: > From: Eric Biggers <ebiggers@google.com> > > Make the f2fs implementation of FS_IOC_FSSETXATTR use the new VFS helper > function vfs_ioc_fssetxattr_check(), and remove the project quota check > since it's now done by the helper function. > > This is based on a patch from Darrick Wong, but reworked to apply after > commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 > i_flags"). > > Originally-from: Darrick J. Wong <darrick.wong@oracle.com> > Signed-off-by: Eric Biggers <ebiggers@google.com> Looks ok, Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> --D > --- > fs/f2fs/file.c | 45 ++++++++++++++------------------------------- > 1 file changed, 14 insertions(+), 31 deletions(-) > > diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c > index b5b941e6448657..ae1a54ecc9fccc 100644 > --- a/fs/f2fs/file.c > +++ b/fs/f2fs/file.c > @@ -2857,52 +2857,32 @@ static inline u32 f2fs_xflags_to_iflags(u32 xflags) > return iflags; > } > > -static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) > +static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa) > { > - struct inode *inode = file_inode(filp); > struct f2fs_inode_info *fi = F2FS_I(inode); > - struct fsxattr fa; > > - memset(&fa, 0, sizeof(struct fsxattr)); > - fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags); > + simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags)); > > if (f2fs_sb_has_project_quota(F2FS_I_SB(inode))) > - fa.fsx_projid = (__u32)from_kprojid(&init_user_ns, > - fi->i_projid); > - > - if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) > - return -EFAULT; > - return 0; > + fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid); > } > > -static int f2fs_ioctl_check_project(struct inode *inode, struct fsxattr *fa) > +static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg) > { > - /* > - * Project Quota ID state is only allowed to change from within the init > - * namespace. Enforce that restriction only if we are trying to change > - * the quota ID state. Everything else is allowed in user namespaces. > - */ > - if (current_user_ns() == &init_user_ns) > - return 0; > - > - if (__kprojid_val(F2FS_I(inode)->i_projid) != fa->fsx_projid) > - return -EINVAL; > + struct inode *inode = file_inode(filp); > + struct fsxattr fa; > > - if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) { > - if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT)) > - return -EINVAL; > - } else { > - if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT) > - return -EINVAL; > - } > + f2fs_fill_fsxattr(inode, &fa); > > + if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa))) > + return -EFAULT; > return 0; > } > > static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) > { > struct inode *inode = file_inode(filp); > - struct fsxattr fa; > + struct fsxattr fa, old_fa; > u32 iflags; > int err; > > @@ -2925,9 +2905,12 @@ static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg) > return err; > > inode_lock(inode); > - err = f2fs_ioctl_check_project(inode, &fa); > + > + f2fs_fill_fsxattr(inode, &old_fa); > + err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa); > if (err) > goto out; > + > err = f2fs_setflags_common(inode, iflags, > f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS)); > if (err) > -- > 2.22.0.410.gd8fdbe21b5-goog > _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply [flat|nested] 10+ messages in thread
* [f2fs-dev] [PATCH 3/3] f2fs: remove redundant check from f2fs_setflags_common() 2019-07-01 20:26 [f2fs-dev] [PATCH 0/3] f2fs: use generic helpers for FS_IOC_{SETFLAGS, FSSETXATTR} Eric Biggers 2019-07-01 20:26 ` [f2fs-dev] [PATCH 1/3] f2fs: use generic checking and prep function for FS_IOC_SETFLAGS Eric Biggers 2019-07-01 20:26 ` [f2fs-dev] [PATCH 2/3] f2fs: use generic checking function for FS_IOC_FSSETXATTR Eric Biggers @ 2019-07-01 20:26 ` Eric Biggers 2019-07-03 1:58 ` Chao Yu 2019-07-07 20:42 ` Darrick J. Wong 2 siblings, 2 replies; 10+ messages in thread From: Eric Biggers @ 2019-07-01 20:26 UTC (permalink / raw) To: Darrick J . Wong; +Cc: linux-fsdevel, Jaegeuk Kim, linux-f2fs-devel From: Eric Biggers <ebiggers@google.com> Now that f2fs_ioc_setflags() and f2fs_ioc_fssetxattr() call the VFS helper functions which check for permission to change the immutable and append-only flags, it's no longer needed to do this check in f2fs_setflags_common() too. So remove it. This is based on a patch from Darrick Wong, but reworked to apply after commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags"). Originally-from: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Eric Biggers <ebiggers@google.com> --- fs/f2fs/file.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index ae1a54ecc9fccc..e8b81f6f5c2b15 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1648,19 +1648,12 @@ static int f2fs_file_flush(struct file *file, fl_owner_t id) static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask) { struct f2fs_inode_info *fi = F2FS_I(inode); - u32 oldflags; /* Is it quota file? Do not allow user to mess with it */ if (IS_NOQUOTA(inode)) return -EPERM; - oldflags = fi->i_flags; - - if ((iflags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL)) - if (!capable(CAP_LINUX_IMMUTABLE)) - return -EPERM; - - fi->i_flags = iflags | (oldflags & ~mask); + fi->i_flags = iflags | (fi->i_flags & ~mask); if (fi->i_flags & F2FS_PROJINHERIT_FL) set_inode_flag(inode, FI_PROJ_INHERIT); -- 2.22.0.410.gd8fdbe21b5-goog _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [f2fs-dev] [PATCH 3/3] f2fs: remove redundant check from f2fs_setflags_common() 2019-07-01 20:26 ` [f2fs-dev] [PATCH 3/3] f2fs: remove redundant check from f2fs_setflags_common() Eric Biggers @ 2019-07-03 1:58 ` Chao Yu 2019-07-07 20:42 ` Darrick J. Wong 1 sibling, 0 replies; 10+ messages in thread From: Chao Yu @ 2019-07-03 1:58 UTC (permalink / raw) To: Eric Biggers, Darrick J . Wong Cc: linux-fsdevel, Jaegeuk Kim, linux-f2fs-devel On 2019/7/2 4:26, Eric Biggers wrote: > From: Eric Biggers <ebiggers@google.com> > > Now that f2fs_ioc_setflags() and f2fs_ioc_fssetxattr() call the VFS > helper functions which check for permission to change the immutable and > append-only flags, it's no longer needed to do this check in > f2fs_setflags_common() too. So remove it. > > This is based on a patch from Darrick Wong, but reworked to apply after > commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 > i_flags"). > > Originally-from: Darrick J. Wong <darrick.wong@oracle.com> > Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Thanks, _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [f2fs-dev] [PATCH 3/3] f2fs: remove redundant check from f2fs_setflags_common() 2019-07-01 20:26 ` [f2fs-dev] [PATCH 3/3] f2fs: remove redundant check from f2fs_setflags_common() Eric Biggers 2019-07-03 1:58 ` Chao Yu @ 2019-07-07 20:42 ` Darrick J. Wong 1 sibling, 0 replies; 10+ messages in thread From: Darrick J. Wong @ 2019-07-07 20:42 UTC (permalink / raw) To: Eric Biggers; +Cc: linux-fsdevel, Jaegeuk Kim, linux-f2fs-devel On Mon, Jul 01, 2019 at 01:26:30PM -0700, Eric Biggers wrote: > From: Eric Biggers <ebiggers@google.com> > > Now that f2fs_ioc_setflags() and f2fs_ioc_fssetxattr() call the VFS > helper functions which check for permission to change the immutable and > append-only flags, it's no longer needed to do this check in > f2fs_setflags_common() too. So remove it. > > This is based on a patch from Darrick Wong, but reworked to apply after > commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4 > i_flags"). > > Originally-from: Darrick J. Wong <darrick.wong@oracle.com> > Signed-off-by: Eric Biggers <ebiggers@google.com> Looks ok, Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> --D > --- > fs/f2fs/file.c | 9 +-------- > 1 file changed, 1 insertion(+), 8 deletions(-) > > diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c > index ae1a54ecc9fccc..e8b81f6f5c2b15 100644 > --- a/fs/f2fs/file.c > +++ b/fs/f2fs/file.c > @@ -1648,19 +1648,12 @@ static int f2fs_file_flush(struct file *file, fl_owner_t id) > static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask) > { > struct f2fs_inode_info *fi = F2FS_I(inode); > - u32 oldflags; > > /* Is it quota file? Do not allow user to mess with it */ > if (IS_NOQUOTA(inode)) > return -EPERM; > > - oldflags = fi->i_flags; > - > - if ((iflags ^ oldflags) & (F2FS_APPEND_FL | F2FS_IMMUTABLE_FL)) > - if (!capable(CAP_LINUX_IMMUTABLE)) > - return -EPERM; > - > - fi->i_flags = iflags | (oldflags & ~mask); > + fi->i_flags = iflags | (fi->i_flags & ~mask); > > if (fi->i_flags & F2FS_PROJINHERIT_FL) > set_inode_flag(inode, FI_PROJ_INHERIT); > -- > 2.22.0.410.gd8fdbe21b5-goog > _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel ^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2019-07-07 20:43 UTC | newest] Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2019-07-01 20:26 [f2fs-dev] [PATCH 0/3] f2fs: use generic helpers for FS_IOC_{SETFLAGS, FSSETXATTR} Eric Biggers 2019-07-01 20:26 ` [f2fs-dev] [PATCH 1/3] f2fs: use generic checking and prep function for FS_IOC_SETFLAGS Eric Biggers 2019-07-03 1:58 ` Chao Yu 2019-07-07 20:41 ` Darrick J. Wong 2019-07-01 20:26 ` [f2fs-dev] [PATCH 2/3] f2fs: use generic checking function for FS_IOC_FSSETXATTR Eric Biggers 2019-07-03 1:58 ` Chao Yu 2019-07-07 20:41 ` Darrick J. Wong 2019-07-01 20:26 ` [f2fs-dev] [PATCH 3/3] f2fs: remove redundant check from f2fs_setflags_common() Eric Biggers 2019-07-03 1:58 ` Chao Yu 2019-07-07 20:42 ` Darrick J. Wong
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