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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-04-12 20:08:00 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-04-12 20:11:44 -0400 |
| commit | 1f9f4328155a6944903e2364f38bb6ed1e1ea9e9 (patch) | |
| tree | 56e597c4a4b92d18c60a37991bbf95371bae2f9f /fs/nfs/inode.c | |
| parent | 63cdd7edfd2871e63f4ca001ff6b8e1e166a74ae (diff) | |
| download | linux-1f9f4328155a6944903e2364f38bb6ed1e1ea9e9.tar.bz2 | |
NFS: nfs_setattr_update_inode() should clear the suid/sgid bits
When we do a 'chown' or 'chgrp', the server will clear the suid/sgid
bits. Ensure that we mirror that in nfs_setattr_update_inode().
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/inode.c')
| -rw-r--r-- | fs/nfs/inode.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 8c2d5f333e81..d34da63202cc 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -636,8 +636,7 @@ nfs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, } /* Optimization: if the end result is no change, don't RPC */ - attr->ia_valid &= NFS_VALID_ATTRS; - if ((attr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0) + if (((attr->ia_valid & NFS_VALID_ATTRS) & ~(ATTR_FILE|ATTR_OPEN)) == 0) return 0; trace_nfs_setattr_enter(inode); @@ -719,6 +718,13 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, } if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) { NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_CTIME; + if ((attr->ia_valid & ATTR_KILL_SUID) != 0 && + inode->i_mode & S_ISUID) + inode->i_mode &= ~S_ISUID; + if ((attr->ia_valid & ATTR_KILL_SGID) != 0 && + (inode->i_mode & (S_ISGID | S_IXGRP)) == + (S_ISGID | S_IXGRP)) + inode->i_mode &= ~S_ISGID; if ((attr->ia_valid & ATTR_MODE) != 0) { int mode = attr->ia_mode & S_IALLUGO; mode |= inode->i_mode & ~S_IALLUGO; |