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![Christian Brauner](/assets/img/avatar_default.png)
In4053d2500b
("orangefs: rework posix acl handling when creating new filesystem objects") we tried to precalculate the correct mode when creating a new inode. However, this leads to regressions when creating new filesystem objects. Even if we precalculate the mode we still need to call __orangefs_setattr() to perform additional checks and we also need to update the mode of ACL_TYPE_ACCESS acls set on the inode. The patch referenced above regressed that. Restore that part of the old behavior and remove the mode precalculation as it doesn't get us anything anymore. Fixes:4053d2500b
("orangefs: rework posix acl handling when creating new filesystem objects") Reported-by: Mike Marshall <hubcap@omnibond.com> Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
560 lines
15 KiB
C
560 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) 2001 Clemson University and The University of Chicago
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* Copyright 2018 Omnibond Systems, L.L.C.
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*
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* See COPYING in top-level directory.
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*/
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#include <linux/kernel.h>
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#include "protocol.h"
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#include "orangefs-kernel.h"
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#include "orangefs-dev-proto.h"
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#include "orangefs-bufmap.h"
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__s32 fsid_of_op(struct orangefs_kernel_op_s *op)
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{
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__s32 fsid = ORANGEFS_FS_ID_NULL;
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if (op) {
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switch (op->upcall.type) {
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case ORANGEFS_VFS_OP_FILE_IO:
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fsid = op->upcall.req.io.refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_LOOKUP:
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fsid = op->upcall.req.lookup.parent_refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_CREATE:
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fsid = op->upcall.req.create.parent_refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_GETATTR:
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fsid = op->upcall.req.getattr.refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_REMOVE:
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fsid = op->upcall.req.remove.parent_refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_MKDIR:
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fsid = op->upcall.req.mkdir.parent_refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_READDIR:
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fsid = op->upcall.req.readdir.refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_SETATTR:
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fsid = op->upcall.req.setattr.refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_SYMLINK:
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fsid = op->upcall.req.sym.parent_refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_RENAME:
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fsid = op->upcall.req.rename.old_parent_refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_STATFS:
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fsid = op->upcall.req.statfs.fs_id;
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break;
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case ORANGEFS_VFS_OP_TRUNCATE:
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fsid = op->upcall.req.truncate.refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_RA_FLUSH:
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fsid = op->upcall.req.ra_cache_flush.refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_FS_UMOUNT:
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fsid = op->upcall.req.fs_umount.fs_id;
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break;
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case ORANGEFS_VFS_OP_GETXATTR:
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fsid = op->upcall.req.getxattr.refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_SETXATTR:
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fsid = op->upcall.req.setxattr.refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_LISTXATTR:
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fsid = op->upcall.req.listxattr.refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_REMOVEXATTR:
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fsid = op->upcall.req.removexattr.refn.fs_id;
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break;
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case ORANGEFS_VFS_OP_FSYNC:
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fsid = op->upcall.req.fsync.refn.fs_id;
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break;
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default:
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break;
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}
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}
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return fsid;
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}
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static int orangefs_inode_flags(struct ORANGEFS_sys_attr_s *attrs)
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{
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int flags = 0;
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if (attrs->flags & ORANGEFS_IMMUTABLE_FL)
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flags |= S_IMMUTABLE;
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else
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flags &= ~S_IMMUTABLE;
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if (attrs->flags & ORANGEFS_APPEND_FL)
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flags |= S_APPEND;
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else
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flags &= ~S_APPEND;
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if (attrs->flags & ORANGEFS_NOATIME_FL)
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flags |= S_NOATIME;
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else
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flags &= ~S_NOATIME;
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return flags;
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}
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static int orangefs_inode_perms(struct ORANGEFS_sys_attr_s *attrs)
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{
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int perm_mode = 0;
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if (attrs->perms & ORANGEFS_O_EXECUTE)
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perm_mode |= S_IXOTH;
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if (attrs->perms & ORANGEFS_O_WRITE)
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perm_mode |= S_IWOTH;
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if (attrs->perms & ORANGEFS_O_READ)
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perm_mode |= S_IROTH;
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if (attrs->perms & ORANGEFS_G_EXECUTE)
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perm_mode |= S_IXGRP;
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if (attrs->perms & ORANGEFS_G_WRITE)
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perm_mode |= S_IWGRP;
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if (attrs->perms & ORANGEFS_G_READ)
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perm_mode |= S_IRGRP;
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if (attrs->perms & ORANGEFS_U_EXECUTE)
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perm_mode |= S_IXUSR;
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if (attrs->perms & ORANGEFS_U_WRITE)
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perm_mode |= S_IWUSR;
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if (attrs->perms & ORANGEFS_U_READ)
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perm_mode |= S_IRUSR;
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if (attrs->perms & ORANGEFS_G_SGID)
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perm_mode |= S_ISGID;
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if (attrs->perms & ORANGEFS_U_SUID)
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perm_mode |= S_ISUID;
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return perm_mode;
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}
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/*
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* NOTE: in kernel land, we never use the sys_attr->link_target for
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* anything, so don't bother copying it into the sys_attr object here.
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*/
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static inline void copy_attributes_from_inode(struct inode *inode,
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struct ORANGEFS_sys_attr_s *attrs)
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{
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struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
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attrs->mask = 0;
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if (orangefs_inode->attr_valid & ATTR_UID) {
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attrs->owner = from_kuid(&init_user_ns, inode->i_uid);
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attrs->mask |= ORANGEFS_ATTR_SYS_UID;
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gossip_debug(GOSSIP_UTILS_DEBUG, "(UID) %d\n", attrs->owner);
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}
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if (orangefs_inode->attr_valid & ATTR_GID) {
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attrs->group = from_kgid(&init_user_ns, inode->i_gid);
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attrs->mask |= ORANGEFS_ATTR_SYS_GID;
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gossip_debug(GOSSIP_UTILS_DEBUG, "(GID) %d\n", attrs->group);
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}
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if (orangefs_inode->attr_valid & ATTR_ATIME) {
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attrs->mask |= ORANGEFS_ATTR_SYS_ATIME;
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if (orangefs_inode->attr_valid & ATTR_ATIME_SET) {
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attrs->atime = (time64_t)inode->i_atime.tv_sec;
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attrs->mask |= ORANGEFS_ATTR_SYS_ATIME_SET;
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}
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}
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if (orangefs_inode->attr_valid & ATTR_MTIME) {
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attrs->mask |= ORANGEFS_ATTR_SYS_MTIME;
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if (orangefs_inode->attr_valid & ATTR_MTIME_SET) {
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attrs->mtime = (time64_t)inode->i_mtime.tv_sec;
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attrs->mask |= ORANGEFS_ATTR_SYS_MTIME_SET;
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}
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}
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if (orangefs_inode->attr_valid & ATTR_CTIME)
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attrs->mask |= ORANGEFS_ATTR_SYS_CTIME;
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/*
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* ORANGEFS cannot set size with a setattr operation. Probably not
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* likely to be requested through the VFS, but just in case, don't
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* worry about ATTR_SIZE
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*/
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if (orangefs_inode->attr_valid & ATTR_MODE) {
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attrs->perms = ORANGEFS_util_translate_mode(inode->i_mode);
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attrs->mask |= ORANGEFS_ATTR_SYS_PERM;
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}
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}
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static int orangefs_inode_type(enum orangefs_ds_type objtype)
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{
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if (objtype == ORANGEFS_TYPE_METAFILE)
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return S_IFREG;
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else if (objtype == ORANGEFS_TYPE_DIRECTORY)
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return S_IFDIR;
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else if (objtype == ORANGEFS_TYPE_SYMLINK)
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return S_IFLNK;
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else
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return -1;
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}
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static void orangefs_make_bad_inode(struct inode *inode)
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{
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if (is_root_handle(inode)) {
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/*
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* if this occurs, the pvfs2-client-core was killed but we
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* can't afford to lose the inode operations and such
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* associated with the root handle in any case.
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*/
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gossip_debug(GOSSIP_UTILS_DEBUG,
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"*** NOT making bad root inode %pU\n",
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get_khandle_from_ino(inode));
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} else {
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gossip_debug(GOSSIP_UTILS_DEBUG,
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"*** making bad inode %pU\n",
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get_khandle_from_ino(inode));
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make_bad_inode(inode);
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}
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}
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static int orangefs_inode_is_stale(struct inode *inode,
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struct ORANGEFS_sys_attr_s *attrs, char *link_target)
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{
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struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
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int type = orangefs_inode_type(attrs->objtype);
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/*
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* If the inode type or symlink target have changed then this
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* inode is stale.
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*/
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if (type == -1 || inode_wrong_type(inode, type)) {
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orangefs_make_bad_inode(inode);
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return 1;
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}
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if (type == S_IFLNK && strncmp(orangefs_inode->link_target,
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link_target, ORANGEFS_NAME_MAX)) {
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orangefs_make_bad_inode(inode);
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return 1;
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}
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return 0;
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}
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int orangefs_inode_getattr(struct inode *inode, int flags)
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{
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struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
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struct orangefs_kernel_op_s *new_op;
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loff_t inode_size;
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int ret, type;
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gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU flags %d\n",
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__func__, get_khandle_from_ino(inode), flags);
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again:
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spin_lock(&inode->i_lock);
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/* Must have all the attributes in the mask and be within cache time. */
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if ((!flags && time_before(jiffies, orangefs_inode->getattr_time)) ||
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orangefs_inode->attr_valid || inode->i_state & I_DIRTY_PAGES) {
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if (orangefs_inode->attr_valid) {
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spin_unlock(&inode->i_lock);
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write_inode_now(inode, 1);
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goto again;
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}
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spin_unlock(&inode->i_lock);
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return 0;
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}
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spin_unlock(&inode->i_lock);
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new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
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if (!new_op)
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return -ENOMEM;
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new_op->upcall.req.getattr.refn = orangefs_inode->refn;
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/*
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* Size is the hardest attribute to get. The incremental cost of any
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* other attribute is essentially zero.
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*/
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if (flags)
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new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_ALL_NOHINT;
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else
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new_op->upcall.req.getattr.mask =
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ORANGEFS_ATTR_SYS_ALL_NOHINT & ~ORANGEFS_ATTR_SYS_SIZE;
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ret = service_operation(new_op, __func__,
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get_interruptible_flag(inode));
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if (ret != 0)
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goto out;
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again2:
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spin_lock(&inode->i_lock);
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/* Must have all the attributes in the mask and be within cache time. */
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if ((!flags && time_before(jiffies, orangefs_inode->getattr_time)) ||
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orangefs_inode->attr_valid || inode->i_state & I_DIRTY_PAGES) {
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if (orangefs_inode->attr_valid) {
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spin_unlock(&inode->i_lock);
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write_inode_now(inode, 1);
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goto again2;
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}
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if (inode->i_state & I_DIRTY_PAGES) {
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ret = 0;
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goto out_unlock;
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}
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gossip_debug(GOSSIP_UTILS_DEBUG, "%s: in cache or dirty\n",
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__func__);
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ret = 0;
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goto out_unlock;
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}
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if (!(flags & ORANGEFS_GETATTR_NEW)) {
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ret = orangefs_inode_is_stale(inode,
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&new_op->downcall.resp.getattr.attributes,
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new_op->downcall.resp.getattr.link_target);
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if (ret) {
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ret = -ESTALE;
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goto out_unlock;
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}
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}
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type = orangefs_inode_type(new_op->
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downcall.resp.getattr.attributes.objtype);
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switch (type) {
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case S_IFREG:
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inode->i_flags = orangefs_inode_flags(&new_op->
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downcall.resp.getattr.attributes);
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if (flags) {
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inode_size = (loff_t)new_op->
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downcall.resp.getattr.attributes.size;
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inode->i_size = inode_size;
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inode->i_blkbits = ffs(new_op->downcall.resp.getattr.
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attributes.blksize);
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inode->i_bytes = inode_size;
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inode->i_blocks =
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(inode_size + 512 - inode_size % 512)/512;
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}
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break;
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case S_IFDIR:
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if (flags) {
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inode->i_size = PAGE_SIZE;
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inode_set_bytes(inode, inode->i_size);
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}
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set_nlink(inode, 1);
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break;
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case S_IFLNK:
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if (flags & ORANGEFS_GETATTR_NEW) {
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inode->i_size = (loff_t)strlen(new_op->
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downcall.resp.getattr.link_target);
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ret = strscpy(orangefs_inode->link_target,
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new_op->downcall.resp.getattr.link_target,
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ORANGEFS_NAME_MAX);
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if (ret == -E2BIG) {
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ret = -EIO;
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goto out_unlock;
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}
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inode->i_link = orangefs_inode->link_target;
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}
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break;
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/* i.e. -1 */
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default:
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/* XXX: ESTALE? This is what is done if it is not new. */
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orangefs_make_bad_inode(inode);
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ret = -ESTALE;
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goto out_unlock;
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}
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inode->i_uid = make_kuid(&init_user_ns, new_op->
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downcall.resp.getattr.attributes.owner);
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inode->i_gid = make_kgid(&init_user_ns, new_op->
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downcall.resp.getattr.attributes.group);
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inode->i_atime.tv_sec = (time64_t)new_op->
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downcall.resp.getattr.attributes.atime;
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inode->i_mtime.tv_sec = (time64_t)new_op->
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downcall.resp.getattr.attributes.mtime;
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inode->i_ctime.tv_sec = (time64_t)new_op->
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downcall.resp.getattr.attributes.ctime;
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inode->i_atime.tv_nsec = 0;
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inode->i_mtime.tv_nsec = 0;
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inode->i_ctime.tv_nsec = 0;
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/* special case: mark the root inode as sticky */
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inode->i_mode = type | (is_root_handle(inode) ? S_ISVTX : 0) |
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orangefs_inode_perms(&new_op->downcall.resp.getattr.attributes);
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orangefs_inode->getattr_time = jiffies +
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orangefs_getattr_timeout_msecs*HZ/1000;
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ret = 0;
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out_unlock:
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spin_unlock(&inode->i_lock);
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out:
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op_release(new_op);
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return ret;
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}
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int orangefs_inode_check_changed(struct inode *inode)
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{
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struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
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struct orangefs_kernel_op_s *new_op;
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int ret;
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gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
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get_khandle_from_ino(inode));
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new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
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if (!new_op)
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return -ENOMEM;
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new_op->upcall.req.getattr.refn = orangefs_inode->refn;
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new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_TYPE |
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ORANGEFS_ATTR_SYS_LNK_TARGET;
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ret = service_operation(new_op, __func__,
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get_interruptible_flag(inode));
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if (ret != 0)
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goto out;
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ret = orangefs_inode_is_stale(inode,
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&new_op->downcall.resp.getattr.attributes,
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new_op->downcall.resp.getattr.link_target);
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out:
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op_release(new_op);
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return ret;
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}
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/*
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* issues a orangefs setattr request to make sure the new attribute values
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* take effect if successful. returns 0 on success; -errno otherwise
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*/
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int orangefs_inode_setattr(struct inode *inode)
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{
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struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
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struct orangefs_kernel_op_s *new_op;
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int ret;
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new_op = op_alloc(ORANGEFS_VFS_OP_SETATTR);
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if (!new_op)
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return -ENOMEM;
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spin_lock(&inode->i_lock);
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new_op->upcall.uid = from_kuid(&init_user_ns, orangefs_inode->attr_uid);
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new_op->upcall.gid = from_kgid(&init_user_ns, orangefs_inode->attr_gid);
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new_op->upcall.req.setattr.refn = orangefs_inode->refn;
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copy_attributes_from_inode(inode,
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&new_op->upcall.req.setattr.attributes);
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orangefs_inode->attr_valid = 0;
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if (!new_op->upcall.req.setattr.attributes.mask) {
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spin_unlock(&inode->i_lock);
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op_release(new_op);
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return 0;
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}
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spin_unlock(&inode->i_lock);
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ret = service_operation(new_op, __func__,
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get_interruptible_flag(inode) | ORANGEFS_OP_WRITEBACK);
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gossip_debug(GOSSIP_UTILS_DEBUG,
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"orangefs_inode_setattr: returning %d\n", ret);
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if (ret)
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orangefs_make_bad_inode(inode);
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op_release(new_op);
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|
|
if (ret == 0)
|
|
orangefs_inode->getattr_time = jiffies - 1;
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* The following is a very dirty hack that is now a permanent part of the
|
|
* ORANGEFS protocol. See protocol.h for more error definitions.
|
|
*/
|
|
|
|
/* The order matches include/orangefs-types.h in the OrangeFS source. */
|
|
static int PINT_errno_mapping[] = {
|
|
0, EPERM, ENOENT, EINTR, EIO, ENXIO, EBADF, EAGAIN, ENOMEM,
|
|
EFAULT, EBUSY, EEXIST, ENODEV, ENOTDIR, EISDIR, EINVAL, EMFILE,
|
|
EFBIG, ENOSPC, EROFS, EMLINK, EPIPE, EDEADLK, ENAMETOOLONG,
|
|
ENOLCK, ENOSYS, ENOTEMPTY, ELOOP, EWOULDBLOCK, ENOMSG, EUNATCH,
|
|
EBADR, EDEADLOCK, ENODATA, ETIME, ENONET, EREMOTE, ECOMM,
|
|
EPROTO, EBADMSG, EOVERFLOW, ERESTART, EMSGSIZE, EPROTOTYPE,
|
|
ENOPROTOOPT, EPROTONOSUPPORT, EOPNOTSUPP, EADDRINUSE,
|
|
EADDRNOTAVAIL, ENETDOWN, ENETUNREACH, ENETRESET, ENOBUFS,
|
|
ETIMEDOUT, ECONNREFUSED, EHOSTDOWN, EHOSTUNREACH, EALREADY,
|
|
EACCES, ECONNRESET, ERANGE
|
|
};
|
|
|
|
int orangefs_normalize_to_errno(__s32 error_code)
|
|
{
|
|
__u32 i;
|
|
|
|
/* Success */
|
|
if (error_code == 0) {
|
|
return 0;
|
|
/*
|
|
* This shouldn't ever happen. If it does it should be fixed on the
|
|
* server.
|
|
*/
|
|
} else if (error_code > 0) {
|
|
gossip_err("orangefs: error status received.\n");
|
|
gossip_err("orangefs: assuming error code is inverted.\n");
|
|
error_code = -error_code;
|
|
}
|
|
|
|
/*
|
|
* XXX: This is very bad since error codes from ORANGEFS may not be
|
|
* suitable for return into userspace.
|
|
*/
|
|
|
|
/*
|
|
* Convert ORANGEFS error values into errno values suitable for return
|
|
* from the kernel.
|
|
*/
|
|
if ((-error_code) & ORANGEFS_NON_ERRNO_ERROR_BIT) {
|
|
if (((-error_code) &
|
|
(ORANGEFS_ERROR_NUMBER_BITS|ORANGEFS_NON_ERRNO_ERROR_BIT|
|
|
ORANGEFS_ERROR_BIT)) == ORANGEFS_ECANCEL) {
|
|
/*
|
|
* cancellation error codes generally correspond to
|
|
* a timeout from the client's perspective
|
|
*/
|
|
error_code = -ETIMEDOUT;
|
|
} else {
|
|
/* assume a default error code */
|
|
gossip_err("%s: bad error code :%d:.\n",
|
|
__func__,
|
|
error_code);
|
|
error_code = -EINVAL;
|
|
}
|
|
|
|
/* Convert ORANGEFS encoded errno values into regular errno values. */
|
|
} else if ((-error_code) & ORANGEFS_ERROR_BIT) {
|
|
i = (-error_code) & ~(ORANGEFS_ERROR_BIT|ORANGEFS_ERROR_CLASS_BITS);
|
|
if (i < ARRAY_SIZE(PINT_errno_mapping))
|
|
error_code = -PINT_errno_mapping[i];
|
|
else
|
|
error_code = -EINVAL;
|
|
|
|
/*
|
|
* Only ORANGEFS protocol error codes should ever come here. Otherwise
|
|
* there is a bug somewhere.
|
|
*/
|
|
} else {
|
|
gossip_err("%s: unknown error code.\n", __func__);
|
|
error_code = -EINVAL;
|
|
}
|
|
return error_code;
|
|
}
|
|
|
|
#define NUM_MODES 11
|
|
__s32 ORANGEFS_util_translate_mode(int mode)
|
|
{
|
|
int ret = 0;
|
|
int i = 0;
|
|
static int modes[NUM_MODES] = {
|
|
S_IXOTH, S_IWOTH, S_IROTH,
|
|
S_IXGRP, S_IWGRP, S_IRGRP,
|
|
S_IXUSR, S_IWUSR, S_IRUSR,
|
|
S_ISGID, S_ISUID
|
|
};
|
|
static int orangefs_modes[NUM_MODES] = {
|
|
ORANGEFS_O_EXECUTE, ORANGEFS_O_WRITE, ORANGEFS_O_READ,
|
|
ORANGEFS_G_EXECUTE, ORANGEFS_G_WRITE, ORANGEFS_G_READ,
|
|
ORANGEFS_U_EXECUTE, ORANGEFS_U_WRITE, ORANGEFS_U_READ,
|
|
ORANGEFS_G_SGID, ORANGEFS_U_SUID
|
|
};
|
|
|
|
for (i = 0; i < NUM_MODES; i++)
|
|
if (mode & modes[i])
|
|
ret |= orangefs_modes[i];
|
|
|
|
return ret;
|
|
}
|
|
#undef NUM_MODES
|