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linux/fs/orangefs/protocol.h
Greg Kroah-Hartman b24413180f 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>
2017-11-02 11:10:55 +01:00

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/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/spinlock_types.h>
#include <linux/slab.h>
#include <linux/ioctl.h>
/* pvfs2-config.h ***********************************************************/
#define ORANGEFS_VERSION_MAJOR 2
#define ORANGEFS_VERSION_MINOR 9
#define ORANGEFS_VERSION_SUB 0
/* khandle stuff ***********************************************************/
/*
* The 2.9 core will put 64 bit handles in here like this:
* 1234 0000 0000 5678
* The 3.0 and beyond cores will put 128 bit handles in here like this:
* 1234 5678 90AB CDEF
* The kernel module will always use the first four bytes and
* the last four bytes as an inum.
*/
struct orangefs_khandle {
unsigned char u[16];
} __aligned(8);
/*
* kernel version of an object ref.
*/
struct orangefs_object_kref {
struct orangefs_khandle khandle;
__s32 fs_id;
__s32 __pad1;
};
/*
* compare 2 khandles assumes little endian thus from large address to
* small address
*/
static inline int ORANGEFS_khandle_cmp(const struct orangefs_khandle *kh1,
const struct orangefs_khandle *kh2)
{
int i;
for (i = 15; i >= 0; i--) {
if (kh1->u[i] > kh2->u[i])
return 1;
if (kh1->u[i] < kh2->u[i])
return -1;
}
return 0;
}
static inline void ORANGEFS_khandle_to(const struct orangefs_khandle *kh,
void *p, int size)
{
memcpy(p, kh->u, 16);
memset(p + 16, 0, size - 16);
}
static inline void ORANGEFS_khandle_from(struct orangefs_khandle *kh,
void *p, int size)
{
memset(kh, 0, 16);
memcpy(kh->u, p, 16);
}
/* pvfs2-types.h ************************************************************/
typedef __u32 ORANGEFS_uid;
typedef __u32 ORANGEFS_gid;
typedef __s32 ORANGEFS_fs_id;
typedef __u32 ORANGEFS_permissions;
typedef __u64 ORANGEFS_time;
typedef __s64 ORANGEFS_size;
typedef __u64 ORANGEFS_flags;
typedef __u64 ORANGEFS_ds_position;
typedef __s32 ORANGEFS_error;
typedef __s64 ORANGEFS_offset;
#define ORANGEFS_SUPER_MAGIC 0x20030528
/*
* ORANGEFS error codes are a signed 32-bit integer. Error codes are negative, but
* the sign is stripped before decoding.
*/
/* Bit 31 is not used since it is the sign. */
/*
* Bit 30 specifies that this is a ORANGEFS error. A ORANGEFS error is either an
* encoded errno value or a ORANGEFS protocol error.
*/
#define ORANGEFS_ERROR_BIT (1 << 30)
/*
* Bit 29 specifies that this is a ORANGEFS protocol error and not an encoded
* errno value.
*/
#define ORANGEFS_NON_ERRNO_ERROR_BIT (1 << 29)
/*
* Bits 9, 8, and 7 specify the error class, which encodes the section of
* server code the error originated in for logging purposes. It is not used
* in the kernel except to be masked out.
*/
#define ORANGEFS_ERROR_CLASS_BITS 0x380
/* Bits 6 - 0 are reserved for the actual error code. */
#define ORANGEFS_ERROR_NUMBER_BITS 0x7f
/* Encoded errno values decoded by PINT_errno_mapping in orangefs-utils.c. */
/* Our own ORANGEFS protocol error codes. */
#define ORANGEFS_ECANCEL (1|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)
#define ORANGEFS_EDEVINIT (2|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)
#define ORANGEFS_EDETAIL (3|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)
#define ORANGEFS_EHOSTNTFD (4|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)
#define ORANGEFS_EADDRNTFD (5|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)
#define ORANGEFS_ENORECVR (6|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)
#define ORANGEFS_ETRYAGAIN (7|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)
#define ORANGEFS_ENOTPVFS (8|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)
#define ORANGEFS_ESECURITY (9|ORANGEFS_NON_ERRNO_ERROR_BIT|ORANGEFS_ERROR_BIT)
/* permission bits */
#define ORANGEFS_O_EXECUTE (1 << 0)
#define ORANGEFS_O_WRITE (1 << 1)
#define ORANGEFS_O_READ (1 << 2)
#define ORANGEFS_G_EXECUTE (1 << 3)
#define ORANGEFS_G_WRITE (1 << 4)
#define ORANGEFS_G_READ (1 << 5)
#define ORANGEFS_U_EXECUTE (1 << 6)
#define ORANGEFS_U_WRITE (1 << 7)
#define ORANGEFS_U_READ (1 << 8)
/* no ORANGEFS_U_VTX (sticky bit) */
#define ORANGEFS_G_SGID (1 << 10)
#define ORANGEFS_U_SUID (1 << 11)
#define ORANGEFS_ITERATE_START 2147483646
#define ORANGEFS_ITERATE_END 2147483645
#define ORANGEFS_IMMUTABLE_FL FS_IMMUTABLE_FL
#define ORANGEFS_APPEND_FL FS_APPEND_FL
#define ORANGEFS_NOATIME_FL FS_NOATIME_FL
#define ORANGEFS_MIRROR_FL 0x01000000ULL
#define ORANGEFS_O_EXECUTE (1 << 0)
#define ORANGEFS_FS_ID_NULL ((__s32)0)
#define ORANGEFS_ATTR_SYS_UID (1 << 0)
#define ORANGEFS_ATTR_SYS_GID (1 << 1)
#define ORANGEFS_ATTR_SYS_PERM (1 << 2)
#define ORANGEFS_ATTR_SYS_ATIME (1 << 3)
#define ORANGEFS_ATTR_SYS_CTIME (1 << 4)
#define ORANGEFS_ATTR_SYS_MTIME (1 << 5)
#define ORANGEFS_ATTR_SYS_TYPE (1 << 6)
#define ORANGEFS_ATTR_SYS_ATIME_SET (1 << 7)
#define ORANGEFS_ATTR_SYS_MTIME_SET (1 << 8)
#define ORANGEFS_ATTR_SYS_SIZE (1 << 20)
#define ORANGEFS_ATTR_SYS_LNK_TARGET (1 << 24)
#define ORANGEFS_ATTR_SYS_DFILE_COUNT (1 << 25)
#define ORANGEFS_ATTR_SYS_DIRENT_COUNT (1 << 26)
#define ORANGEFS_ATTR_SYS_BLKSIZE (1 << 28)
#define ORANGEFS_ATTR_SYS_MIRROR_COPIES_COUNT (1 << 29)
#define ORANGEFS_ATTR_SYS_COMMON_ALL \
(ORANGEFS_ATTR_SYS_UID | \
ORANGEFS_ATTR_SYS_GID | \
ORANGEFS_ATTR_SYS_PERM | \
ORANGEFS_ATTR_SYS_ATIME | \
ORANGEFS_ATTR_SYS_CTIME | \
ORANGEFS_ATTR_SYS_MTIME | \
ORANGEFS_ATTR_SYS_TYPE)
#define ORANGEFS_ATTR_SYS_ALL_SETABLE \
(ORANGEFS_ATTR_SYS_COMMON_ALL-ORANGEFS_ATTR_SYS_TYPE)
#define ORANGEFS_ATTR_SYS_ALL_NOHINT \
(ORANGEFS_ATTR_SYS_COMMON_ALL | \
ORANGEFS_ATTR_SYS_SIZE | \
ORANGEFS_ATTR_SYS_LNK_TARGET | \
ORANGEFS_ATTR_SYS_DFILE_COUNT | \
ORANGEFS_ATTR_SYS_MIRROR_COPIES_COUNT | \
ORANGEFS_ATTR_SYS_DIRENT_COUNT | \
ORANGEFS_ATTR_SYS_BLKSIZE)
#define ORANGEFS_XATTR_REPLACE 0x2
#define ORANGEFS_XATTR_CREATE 0x1
#define ORANGEFS_MAX_SERVER_ADDR_LEN 256
#define ORANGEFS_NAME_MAX 256
/*
* max extended attribute name len as imposed by the VFS and exploited for the
* upcall request types.
* NOTE: Please retain them as multiples of 8 even if you wish to change them
* This is *NECESSARY* for supporting 32 bit user-space binaries on a 64-bit
* kernel. Due to implementation within DBPF, this really needs to be
* ORANGEFS_NAME_MAX, which it was the same value as, but no reason to let it
* break if that changes in the future.
*/
#define ORANGEFS_MAX_XATTR_NAMELEN ORANGEFS_NAME_MAX /* Not the same as
* XATTR_NAME_MAX defined
* by <linux/xattr.h>
*/
#define ORANGEFS_MAX_XATTR_VALUELEN 8192 /* Not the same as XATTR_SIZE_MAX
* defined by <linux/xattr.h>
*/
#define ORANGEFS_MAX_XATTR_LISTLEN 16 /* Not the same as XATTR_LIST_MAX
* defined by <linux/xattr.h>
*/
/*
* ORANGEFS I/O operation types, used in both system and server interfaces.
*/
enum ORANGEFS_io_type {
ORANGEFS_IO_READ = 1,
ORANGEFS_IO_WRITE = 2
};
/*
* If this enum is modified the server parameters related to the precreate pool
* batch and low threshold sizes may need to be modified to reflect this
* change.
*/
enum orangefs_ds_type {
ORANGEFS_TYPE_NONE = 0,
ORANGEFS_TYPE_METAFILE = (1 << 0),
ORANGEFS_TYPE_DATAFILE = (1 << 1),
ORANGEFS_TYPE_DIRECTORY = (1 << 2),
ORANGEFS_TYPE_SYMLINK = (1 << 3),
ORANGEFS_TYPE_DIRDATA = (1 << 4),
ORANGEFS_TYPE_INTERNAL = (1 << 5) /* for the server's private use */
};
/*
* ORANGEFS_certificate simply stores a buffer with the buffer size.
* The buffer can be converted to an OpenSSL X509 struct for use.
*/
struct ORANGEFS_certificate {
__u32 buf_size;
unsigned char *buf;
};
/*
* A credential identifies a user and is signed by the client/user
* private key.
*/
struct ORANGEFS_credential {
__u32 userid; /* user id */
__u32 num_groups; /* length of group_array */
__u32 *group_array; /* groups for which the user is a member */
char *issuer; /* alias of the issuing server */
__u64 timeout; /* seconds after epoch to time out */
__u32 sig_size; /* length of the signature in bytes */
unsigned char *signature; /* digital signature */
struct ORANGEFS_certificate certificate; /* user certificate buffer */
};
#define extra_size_ORANGEFS_credential (ORANGEFS_REQ_LIMIT_GROUPS * \
sizeof(__u32) + \
ORANGEFS_REQ_LIMIT_ISSUER + \
ORANGEFS_REQ_LIMIT_SIGNATURE + \
extra_size_ORANGEFS_certificate)
/* This structure is used by the VFS-client interaction alone */
struct ORANGEFS_keyval_pair {
char key[ORANGEFS_MAX_XATTR_NAMELEN];
__s32 key_sz; /* __s32 for portable, fixed-size structures */
__s32 val_sz;
char val[ORANGEFS_MAX_XATTR_VALUELEN];
};
/* pvfs2-sysint.h ***********************************************************/
/* Describes attributes for a file, directory, or symlink. */
struct ORANGEFS_sys_attr_s {
__u32 owner;
__u32 group;
__u32 perms;
__u64 atime;
__u64 mtime;
__u64 ctime;
__s64 size;
/* NOTE: caller must free if valid */
char *link_target;
/* Changed to __s32 so that size of structure does not change */
__s32 dfile_count;
/* Changed to __s32 so that size of structure does not change */
__s32 distr_dir_servers_initial;
/* Changed to __s32 so that size of structure does not change */
__s32 distr_dir_servers_max;
/* Changed to __s32 so that size of structure does not change */
__s32 distr_dir_split_size;
__u32 mirror_copies_count;
/* NOTE: caller must free if valid */
char *dist_name;
/* NOTE: caller must free if valid */
char *dist_params;
__s64 dirent_count;
enum orangefs_ds_type objtype;
__u64 flags;
__u32 mask;
__s64 blksize;
};
#define ORANGEFS_LOOKUP_LINK_NO_FOLLOW 0
/* pint-dev.h ***************************************************************/
/* parameter structure used in ORANGEFS_DEV_DEBUG ioctl command */
struct dev_mask_info_s {
enum {
KERNEL_MASK,
CLIENT_MASK,
} mask_type;
__u64 mask_value;
};
struct dev_mask2_info_s {
__u64 mask1_value;
__u64 mask2_value;
};
/* pvfs2-util.h *************************************************************/
__s32 ORANGEFS_util_translate_mode(int mode);
/* pvfs2-debug.h ************************************************************/
#include "orangefs-debug.h"
/* pvfs2-internal.h *********************************************************/
#define llu(x) (unsigned long long)(x)
#define lld(x) (long long)(x)
/* pint-dev-shared.h ********************************************************/
#define ORANGEFS_DEV_MAGIC 'k'
#define ORANGEFS_READDIR_DEFAULT_DESC_COUNT 5
#define DEV_GET_MAGIC 0x1
#define DEV_GET_MAX_UPSIZE 0x2
#define DEV_GET_MAX_DOWNSIZE 0x3
#define DEV_MAP 0x4
#define DEV_REMOUNT_ALL 0x5
#define DEV_DEBUG 0x6
#define DEV_UPSTREAM 0x7
#define DEV_CLIENT_MASK 0x8
#define DEV_CLIENT_STRING 0x9
#define DEV_MAX_NR 0xa
/* supported ioctls, codes are with respect to user-space */
enum {
ORANGEFS_DEV_GET_MAGIC = _IOW(ORANGEFS_DEV_MAGIC, DEV_GET_MAGIC, __s32),
ORANGEFS_DEV_GET_MAX_UPSIZE =
_IOW(ORANGEFS_DEV_MAGIC, DEV_GET_MAX_UPSIZE, __s32),
ORANGEFS_DEV_GET_MAX_DOWNSIZE =
_IOW(ORANGEFS_DEV_MAGIC, DEV_GET_MAX_DOWNSIZE, __s32),
ORANGEFS_DEV_MAP = _IO(ORANGEFS_DEV_MAGIC, DEV_MAP),
ORANGEFS_DEV_REMOUNT_ALL = _IO(ORANGEFS_DEV_MAGIC, DEV_REMOUNT_ALL),
ORANGEFS_DEV_DEBUG = _IOR(ORANGEFS_DEV_MAGIC, DEV_DEBUG, __s32),
ORANGEFS_DEV_UPSTREAM = _IOW(ORANGEFS_DEV_MAGIC, DEV_UPSTREAM, int),
ORANGEFS_DEV_CLIENT_MASK = _IOW(ORANGEFS_DEV_MAGIC,
DEV_CLIENT_MASK,
struct dev_mask2_info_s),
ORANGEFS_DEV_CLIENT_STRING = _IOW(ORANGEFS_DEV_MAGIC,
DEV_CLIENT_STRING,
char *),
ORANGEFS_DEV_MAXNR = DEV_MAX_NR,
};
/*
* version number for use in communicating between kernel space and user
* space. Zero signifies the upstream version of the kernel module.
*/
#define ORANGEFS_KERNEL_PROTO_VERSION 0
#define ORANGEFS_MINIMUM_USERSPACE_VERSION 20903
/*
* describes memory regions to map in the ORANGEFS_DEV_MAP ioctl.
* NOTE: See devorangefs-req.c for 32 bit compat structure.
* Since this structure has a variable-sized layout that is different
* on 32 and 64 bit platforms, we need to normalize to a 64 bit layout
* on such systems before servicing ioctl calls from user-space binaries
* that may be 32 bit!
*/
struct ORANGEFS_dev_map_desc {
void *ptr;
__s32 total_size;
__s32 size;
__s32 count;
};
/* gossip.h *****************************************************************/
#ifdef GOSSIP_DISABLE_DEBUG
#define gossip_debug(mask, fmt, ...) \
do { \
if (0) \
printk(KERN_DEBUG fmt, ##__VA_ARGS__); \
} while (0)
#else
extern __u64 orangefs_gossip_debug_mask;
/* try to avoid function call overhead by checking masks in macro */
#define gossip_debug(mask, fmt, ...) \
do { \
if (orangefs_gossip_debug_mask & (mask)) \
printk(KERN_DEBUG fmt, ##__VA_ARGS__); \
} while (0)
#endif /* GOSSIP_DISABLE_DEBUG */
/* do file and line number printouts w/ the GNU preprocessor */
#define gossip_ldebug(mask, fmt, ...) \
gossip_debug(mask, "%s: " fmt, __func__, ##__VA_ARGS__)
#define gossip_err pr_err
#define gossip_lerr(fmt, ...) \
gossip_err("%s line %d: " fmt, \
__FILE__, __LINE__, ##__VA_ARGS__)
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