summaryrefslogtreecommitdiffstats
path: root/fs/xfs/xfs_iops.c
diff options
context:
space:
mode:
authorChristian Brauner <christian.brauner@ubuntu.com>2021-01-21 14:19:43 +0100
committerChristian Brauner <christian.brauner@ubuntu.com>2021-01-24 14:27:20 +0100
commit549c7297717c32ee53f156cd949e055e601f67bb (patch)
treed096bc02f780bdee69a701952d5568f4be9972c1 /fs/xfs/xfs_iops.c
parentexec: handle idmapped mounts (diff)
downloadlinux-549c7297717c32ee53f156cd949e055e601f67bb.tar.xz
linux-549c7297717c32ee53f156cd949e055e601f67bb.zip
fs: make helpers idmap mount aware
Extend some inode methods with an additional user namespace argument. A filesystem that is aware of idmapped mounts will receive the user namespace the mount has been marked with. This can be used for additional permission checking and also to enable filesystems to translate between uids and gids if they need to. We have implemented all relevant helpers in earlier patches. As requested we simply extend the exisiting inode method instead of introducing new ones. This is a little more code churn but it's mostly mechanical and doesnt't leave us with additional inode methods. Link: https://lore.kernel.org/r/20210121131959.646623-25-christian.brauner@ubuntu.com Cc: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'fs/xfs/xfs_iops.c')
-rw-r--r--fs/xfs/xfs_iops.c52
1 files changed, 30 insertions, 22 deletions
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 26d22edef741..f5dfa128af64 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -220,29 +220,32 @@ xfs_generic_create(
STATIC int
xfs_vn_mknod(
- struct inode *dir,
- struct dentry *dentry,
- umode_t mode,
- dev_t rdev)
+ struct user_namespace *mnt_userns,
+ struct inode *dir,
+ struct dentry *dentry,
+ umode_t mode,
+ dev_t rdev)
{
return xfs_generic_create(dir, dentry, mode, rdev, false);
}
STATIC int
xfs_vn_create(
- struct inode *dir,
- struct dentry *dentry,
- umode_t mode,
- bool flags)
+ struct user_namespace *mnt_userns,
+ struct inode *dir,
+ struct dentry *dentry,
+ umode_t mode,
+ bool flags)
{
return xfs_generic_create(dir, dentry, mode, 0, false);
}
STATIC int
xfs_vn_mkdir(
- struct inode *dir,
- struct dentry *dentry,
- umode_t mode)
+ struct user_namespace *mnt_userns,
+ struct inode *dir,
+ struct dentry *dentry,
+ umode_t mode)
{
return xfs_generic_create(dir, dentry, mode | S_IFDIR, 0, false);
}
@@ -361,9 +364,10 @@ xfs_vn_unlink(
STATIC int
xfs_vn_symlink(
- struct inode *dir,
- struct dentry *dentry,
- const char *symname)
+ struct user_namespace *mnt_userns,
+ struct inode *dir,
+ struct dentry *dentry,
+ const char *symname)
{
struct inode *inode;
struct xfs_inode *cip = NULL;
@@ -403,11 +407,12 @@ xfs_vn_symlink(
STATIC int
xfs_vn_rename(
- struct inode *odir,
- struct dentry *odentry,
- struct inode *ndir,
- struct dentry *ndentry,
- unsigned int flags)
+ struct user_namespace *mnt_userns,
+ struct inode *odir,
+ struct dentry *odentry,
+ struct inode *ndir,
+ struct dentry *ndentry,
+ unsigned int flags)
{
struct inode *new_inode = d_inode(ndentry);
int omode = 0;
@@ -529,6 +534,7 @@ xfs_stat_blksize(
STATIC int
xfs_vn_getattr(
+ struct user_namespace *mnt_userns,
const struct path *path,
struct kstat *stat,
u32 request_mask,
@@ -1047,6 +1053,7 @@ xfs_vn_setattr_size(
STATIC int
xfs_vn_setattr(
+ struct user_namespace *mnt_userns,
struct dentry *dentry,
struct iattr *iattr)
{
@@ -1144,9 +1151,10 @@ xfs_vn_fiemap(
STATIC int
xfs_vn_tmpfile(
- struct inode *dir,
- struct dentry *dentry,
- umode_t mode)
+ struct user_namespace *mnt_userns,
+ struct inode *dir,
+ struct dentry *dentry,
+ umode_t mode)
{
return xfs_generic_create(dir, dentry, mode, 0, true);
}