linux_dsm_epyc7002/fs/orangefs/orangefs-utils.c

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License cleanup: add SPDX GPL-2.0 license identifier to files with no license Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 21:07:57 +07:00
// SPDX-License-Identifier: GPL-2.0
/*
* (C) 2001 Clemson University and The University of Chicago
*
* See COPYING in top-level directory.
*/
#include <linux/kernel.h>
#include "protocol.h"
#include "orangefs-kernel.h"
#include "orangefs-dev-proto.h"
#include "orangefs-bufmap.h"
__s32 fsid_of_op(struct orangefs_kernel_op_s *op)
{
__s32 fsid = ORANGEFS_FS_ID_NULL;
if (op) {
switch (op->upcall.type) {
case ORANGEFS_VFS_OP_FILE_IO:
fsid = op->upcall.req.io.refn.fs_id;
break;
case ORANGEFS_VFS_OP_LOOKUP:
fsid = op->upcall.req.lookup.parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_CREATE:
fsid = op->upcall.req.create.parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_GETATTR:
fsid = op->upcall.req.getattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_REMOVE:
fsid = op->upcall.req.remove.parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_MKDIR:
fsid = op->upcall.req.mkdir.parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_READDIR:
fsid = op->upcall.req.readdir.refn.fs_id;
break;
case ORANGEFS_VFS_OP_SETATTR:
fsid = op->upcall.req.setattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_SYMLINK:
fsid = op->upcall.req.sym.parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_RENAME:
fsid = op->upcall.req.rename.old_parent_refn.fs_id;
break;
case ORANGEFS_VFS_OP_STATFS:
fsid = op->upcall.req.statfs.fs_id;
break;
case ORANGEFS_VFS_OP_TRUNCATE:
fsid = op->upcall.req.truncate.refn.fs_id;
break;
case ORANGEFS_VFS_OP_RA_FLUSH:
fsid = op->upcall.req.ra_cache_flush.refn.fs_id;
break;
case ORANGEFS_VFS_OP_FS_UMOUNT:
fsid = op->upcall.req.fs_umount.fs_id;
break;
case ORANGEFS_VFS_OP_GETXATTR:
fsid = op->upcall.req.getxattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_SETXATTR:
fsid = op->upcall.req.setxattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_LISTXATTR:
fsid = op->upcall.req.listxattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_REMOVEXATTR:
fsid = op->upcall.req.removexattr.refn.fs_id;
break;
case ORANGEFS_VFS_OP_FSYNC:
fsid = op->upcall.req.fsync.refn.fs_id;
break;
default:
break;
}
}
return fsid;
}
static int orangefs_inode_flags(struct ORANGEFS_sys_attr_s *attrs)
{
int flags = 0;
if (attrs->flags & ORANGEFS_IMMUTABLE_FL)
flags |= S_IMMUTABLE;
else
flags &= ~S_IMMUTABLE;
if (attrs->flags & ORANGEFS_APPEND_FL)
flags |= S_APPEND;
else
flags &= ~S_APPEND;
if (attrs->flags & ORANGEFS_NOATIME_FL)
flags |= S_NOATIME;
else
flags &= ~S_NOATIME;
return flags;
}
static int orangefs_inode_perms(struct ORANGEFS_sys_attr_s *attrs)
{
int perm_mode = 0;
if (attrs->perms & ORANGEFS_O_EXECUTE)
perm_mode |= S_IXOTH;
if (attrs->perms & ORANGEFS_O_WRITE)
perm_mode |= S_IWOTH;
if (attrs->perms & ORANGEFS_O_READ)
perm_mode |= S_IROTH;
if (attrs->perms & ORANGEFS_G_EXECUTE)
perm_mode |= S_IXGRP;
if (attrs->perms & ORANGEFS_G_WRITE)
perm_mode |= S_IWGRP;
if (attrs->perms & ORANGEFS_G_READ)
perm_mode |= S_IRGRP;
if (attrs->perms & ORANGEFS_U_EXECUTE)
perm_mode |= S_IXUSR;
if (attrs->perms & ORANGEFS_U_WRITE)
perm_mode |= S_IWUSR;
if (attrs->perms & ORANGEFS_U_READ)
perm_mode |= S_IRUSR;
if (attrs->perms & ORANGEFS_G_SGID)
perm_mode |= S_ISGID;
if (attrs->perms & ORANGEFS_U_SUID)
perm_mode |= S_ISUID;
return perm_mode;
}
/*
* NOTE: in kernel land, we never use the sys_attr->link_target for
* anything, so don't bother copying it into the sys_attr object here.
*/
static inline int copy_attributes_from_inode(struct inode *inode,
struct ORANGEFS_sys_attr_s *attrs,
struct iattr *iattr)
{
umode_t tmp_mode;
if (!iattr || !inode || !attrs) {
gossip_err("NULL iattr (%p), inode (%p), attrs (%p) "
"in copy_attributes_from_inode!\n",
iattr,
inode,
attrs);
return -EINVAL;
}
/*
* We need to be careful to only copy the attributes out of the
* iattr object that we know are valid.
*/
attrs->mask = 0;
if (iattr->ia_valid & ATTR_UID) {
orangefs: fix namespace handling In orangefs_inode_getxattr(), an fsuid is written to dmesg. The kuid is converted to a userspace uid via from_kuid(current_user_ns(), [...]), but since dmesg is global, init_user_ns should be used here instead. In copy_attributes_from_inode(), op_alloc() and fill_default_sys_attrs(), upcall structures are populated with uids/gids that have been mapped into the caller's namespace. However, those upcall structures are read by another process (the userspace filesystem driver), and that process might be running in another namespace. This effectively lets any user spoof its uid and gid as seen by the userspace filesystem driver. To fix the second issue, I just construct the opcall structures with init_user_ns uids/gids and require the filesystem server to run in the init namespace. Since orangefs is full of global state anyway (as the error message in DUMP_DEVICE_ERROR explains, there can only be one userspace orangefs filesystem driver at once), that shouldn't be a problem. [ Why does orangefs even exist in the kernel if everything does upcalls into userspace? What does orangefs do that couldn't be done with the FUSE interface? If there is no good answer to those questions, I'd prefer to see orangefs kicked out of the kernel. Can that be done for something that shipped in a release? According to commit f7ab093f74bf ("Orangefs: kernel client part 1"), they even already have a FUSE daemon, and the only rational reason (apart from "but most of our users report preferring to use our kernel module instead") given for not wanting to use FUSE is one "in-the-works" feature that could probably be integated into FUSE instead. ] This patch has been compile-tested. Signed-off-by: Jann Horn <jannh@google.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-06-25 06:51:52 +07:00
attrs->owner = from_kuid(&init_user_ns, iattr->ia_uid);
attrs->mask |= ORANGEFS_ATTR_SYS_UID;
gossip_debug(GOSSIP_UTILS_DEBUG, "(UID) %d\n", attrs->owner);
}
if (iattr->ia_valid & ATTR_GID) {
orangefs: fix namespace handling In orangefs_inode_getxattr(), an fsuid is written to dmesg. The kuid is converted to a userspace uid via from_kuid(current_user_ns(), [...]), but since dmesg is global, init_user_ns should be used here instead. In copy_attributes_from_inode(), op_alloc() and fill_default_sys_attrs(), upcall structures are populated with uids/gids that have been mapped into the caller's namespace. However, those upcall structures are read by another process (the userspace filesystem driver), and that process might be running in another namespace. This effectively lets any user spoof its uid and gid as seen by the userspace filesystem driver. To fix the second issue, I just construct the opcall structures with init_user_ns uids/gids and require the filesystem server to run in the init namespace. Since orangefs is full of global state anyway (as the error message in DUMP_DEVICE_ERROR explains, there can only be one userspace orangefs filesystem driver at once), that shouldn't be a problem. [ Why does orangefs even exist in the kernel if everything does upcalls into userspace? What does orangefs do that couldn't be done with the FUSE interface? If there is no good answer to those questions, I'd prefer to see orangefs kicked out of the kernel. Can that be done for something that shipped in a release? According to commit f7ab093f74bf ("Orangefs: kernel client part 1"), they even already have a FUSE daemon, and the only rational reason (apart from "but most of our users report preferring to use our kernel module instead") given for not wanting to use FUSE is one "in-the-works" feature that could probably be integated into FUSE instead. ] This patch has been compile-tested. Signed-off-by: Jann Horn <jannh@google.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2016-06-25 06:51:52 +07:00
attrs->group = from_kgid(&init_user_ns, iattr->ia_gid);
attrs->mask |= ORANGEFS_ATTR_SYS_GID;
gossip_debug(GOSSIP_UTILS_DEBUG, "(GID) %d\n", attrs->group);
}
if (iattr->ia_valid & ATTR_ATIME) {
attrs->mask |= ORANGEFS_ATTR_SYS_ATIME;
if (iattr->ia_valid & ATTR_ATIME_SET) {
attrs->atime = (time64_t)iattr->ia_atime.tv_sec;
attrs->mask |= ORANGEFS_ATTR_SYS_ATIME_SET;
}
}
if (iattr->ia_valid & ATTR_MTIME) {
attrs->mask |= ORANGEFS_ATTR_SYS_MTIME;
if (iattr->ia_valid & ATTR_MTIME_SET) {
attrs->mtime = (time64_t)iattr->ia_mtime.tv_sec;
attrs->mask |= ORANGEFS_ATTR_SYS_MTIME_SET;
}
}
if (iattr->ia_valid & ATTR_CTIME)
attrs->mask |= ORANGEFS_ATTR_SYS_CTIME;
/*
* ORANGEFS cannot set size with a setattr operation. Probably not
* likely to be requested through the VFS, but just in case, don't
* worry about ATTR_SIZE
*/
if (iattr->ia_valid & ATTR_MODE) {
tmp_mode = iattr->ia_mode;
if (tmp_mode & (S_ISVTX)) {
if (is_root_handle(inode)) {
/*
* allow sticky bit to be set on root (since
* it shows up that way by default anyhow),
* but don't show it to the server
*/
tmp_mode -= S_ISVTX;
} else {
gossip_debug(GOSSIP_UTILS_DEBUG,
"%s: setting sticky bit not supported.\n",
__func__);
return -EINVAL;
}
}
if (tmp_mode & (S_ISUID)) {
gossip_debug(GOSSIP_UTILS_DEBUG,
"%s: setting setuid bit not supported.\n",
__func__);
return -EINVAL;
}
attrs->perms = ORANGEFS_util_translate_mode(tmp_mode);
attrs->mask |= ORANGEFS_ATTR_SYS_PERM;
}
return 0;
}
static int orangefs_inode_type(enum orangefs_ds_type objtype)
{
if (objtype == ORANGEFS_TYPE_METAFILE)
return S_IFREG;
else if (objtype == ORANGEFS_TYPE_DIRECTORY)
return S_IFDIR;
else if (objtype == ORANGEFS_TYPE_SYMLINK)
return S_IFLNK;
else
return -1;
}
static void orangefs_make_bad_inode(struct inode *inode)
{
if (is_root_handle(inode)) {
/*
* if this occurs, the pvfs2-client-core was killed but we
* can't afford to lose the inode operations and such
* associated with the root handle in any case.
*/
gossip_debug(GOSSIP_UTILS_DEBUG,
"*** NOT making bad root inode %pU\n",
get_khandle_from_ino(inode));
} else {
gossip_debug(GOSSIP_UTILS_DEBUG,
"*** making bad inode %pU\n",
get_khandle_from_ino(inode));
make_bad_inode(inode);
}
}
static int orangefs_inode_is_stale(struct inode *inode,
struct ORANGEFS_sys_attr_s *attrs, char *link_target)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
int type = orangefs_inode_type(attrs->objtype);
/*
* If the inode type or symlink target have changed then this
* inode is stale.
*/
if (type == -1 || !(inode->i_mode & type)) {
orangefs_make_bad_inode(inode);
return 1;
}
if (type == S_IFLNK && strncmp(orangefs_inode->link_target,
link_target, ORANGEFS_NAME_MAX)) {
orangefs_make_bad_inode(inode);
return 1;
}
return 0;
}
int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
u32 request_mask)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
struct orangefs_kernel_op_s *new_op;
loff_t inode_size;
int ret, type;
gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
get_khandle_from_ino(inode));
if (!new && !bypass) {
/*
* Must have all the attributes in the mask and be within cache
* time.
*/
if ((request_mask & orangefs_inode->getattr_mask) ==
request_mask &&
time_before(jiffies, orangefs_inode->getattr_time))
return 0;
}
new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
if (!new_op)
return -ENOMEM;
new_op->upcall.req.getattr.refn = orangefs_inode->refn;
/*
* Size is the hardest attribute to get. The incremental cost of any
* other attribute is essentially zero.
*/
if (request_mask & STATX_SIZE || new)
new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_ALL_NOHINT;
else
new_op->upcall.req.getattr.mask =
ORANGEFS_ATTR_SYS_ALL_NOHINT & ~ORANGEFS_ATTR_SYS_SIZE;
ret = service_operation(new_op, __func__,
get_interruptible_flag(inode));
if (ret != 0)
goto out;
if (!new) {
ret = orangefs_inode_is_stale(inode,
&new_op->downcall.resp.getattr.attributes,
new_op->downcall.resp.getattr.link_target);
if (ret) {
ret = -ESTALE;
goto out;
}
}
type = orangefs_inode_type(new_op->
downcall.resp.getattr.attributes.objtype);
switch (type) {
case S_IFREG:
inode->i_flags = orangefs_inode_flags(&new_op->
downcall.resp.getattr.attributes);
if (request_mask & STATX_SIZE || new) {
inode_size = (loff_t)new_op->
downcall.resp.getattr.attributes.size;
inode->i_size = inode_size;
inode->i_blkbits = ffs(new_op->downcall.resp.getattr.
attributes.blksize);
spin_lock(&inode->i_lock);
inode->i_bytes = inode_size;
inode->i_blocks =
(inode_size + 512 - inode_size % 512)/512;
spin_unlock(&inode->i_lock);
}
break;
case S_IFDIR:
if (request_mask & STATX_SIZE || new) {
inode->i_size = PAGE_SIZE;
spin_lock(&inode->i_lock);
inode_set_bytes(inode, inode->i_size);
spin_unlock(&inode->i_lock);
}
set_nlink(inode, 1);
break;
case S_IFLNK:
if (new) {
inode->i_size = (loff_t)strlen(new_op->
downcall.resp.getattr.link_target);
ret = strscpy(orangefs_inode->link_target,
new_op->downcall.resp.getattr.link_target,
ORANGEFS_NAME_MAX);
if (ret == -E2BIG) {
ret = -EIO;
goto out;
}
inode->i_link = orangefs_inode->link_target;
}
break;
/* i.e. -1 */
default:
/* XXX: ESTALE? This is what is done if it is not new. */
orangefs_make_bad_inode(inode);
ret = -ESTALE;
goto out;
}
inode->i_uid = make_kuid(&init_user_ns, new_op->
downcall.resp.getattr.attributes.owner);
inode->i_gid = make_kgid(&init_user_ns, new_op->
downcall.resp.getattr.attributes.group);
inode->i_atime.tv_sec = (time64_t)new_op->
downcall.resp.getattr.attributes.atime;
inode->i_mtime.tv_sec = (time64_t)new_op->
downcall.resp.getattr.attributes.mtime;
inode->i_ctime.tv_sec = (time64_t)new_op->
downcall.resp.getattr.attributes.ctime;
inode->i_atime.tv_nsec = 0;
inode->i_mtime.tv_nsec = 0;
inode->i_ctime.tv_nsec = 0;
/* special case: mark the root inode as sticky */
inode->i_mode = type | (is_root_handle(inode) ? S_ISVTX : 0) |
orangefs_inode_perms(&new_op->downcall.resp.getattr.attributes);
orangefs_inode->getattr_time = jiffies +
orangefs_getattr_timeout_msecs*HZ/1000;
if (request_mask & STATX_SIZE || new)
orangefs_inode->getattr_mask = STATX_BASIC_STATS;
else
orangefs_inode->getattr_mask = STATX_BASIC_STATS & ~STATX_SIZE;
ret = 0;
out:
op_release(new_op);
return ret;
}
int orangefs_inode_check_changed(struct inode *inode)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
struct orangefs_kernel_op_s *new_op;
int ret;
gossip_debug(GOSSIP_UTILS_DEBUG, "%s: called on inode %pU\n", __func__,
get_khandle_from_ino(inode));
new_op = op_alloc(ORANGEFS_VFS_OP_GETATTR);
if (!new_op)
return -ENOMEM;
new_op->upcall.req.getattr.refn = orangefs_inode->refn;
new_op->upcall.req.getattr.mask = ORANGEFS_ATTR_SYS_TYPE |
ORANGEFS_ATTR_SYS_LNK_TARGET;
ret = service_operation(new_op, __func__,
get_interruptible_flag(inode));
if (ret != 0)
goto out;
ret = orangefs_inode_is_stale(inode,
&new_op->downcall.resp.getattr.attributes,
new_op->downcall.resp.getattr.link_target);
out:
op_release(new_op);
return ret;
}
/*
* issues a orangefs setattr request to make sure the new attribute values
* take effect if successful. returns 0 on success; -errno otherwise
*/
int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr)
{
struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
struct orangefs_kernel_op_s *new_op;
int ret;
new_op = op_alloc(ORANGEFS_VFS_OP_SETATTR);
if (!new_op)
return -ENOMEM;
new_op->upcall.req.setattr.refn = orangefs_inode->refn;
ret = copy_attributes_from_inode(inode,
&new_op->upcall.req.setattr.attributes,
iattr);
if (ret >= 0) {
ret = service_operation(new_op, __func__,
get_interruptible_flag(inode));
gossip_debug(GOSSIP_UTILS_DEBUG,
"orangefs_inode_setattr: returning %d\n",
ret);
}
op_release(new_op);
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