mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
b24413180f
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>
188 lines
5.6 KiB
C
188 lines
5.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef CEPH_MSGR_H
|
|
#define CEPH_MSGR_H
|
|
|
|
/*
|
|
* Data types for message passing layer used by Ceph.
|
|
*/
|
|
|
|
#define CEPH_MON_PORT 6789 /* default monitor port */
|
|
|
|
/*
|
|
* client-side processes will try to bind to ports in this
|
|
* range, simply for the benefit of tools like nmap or wireshark
|
|
* that would like to identify the protocol.
|
|
*/
|
|
#define CEPH_PORT_FIRST 6789
|
|
#define CEPH_PORT_START 6800 /* non-monitors start here */
|
|
#define CEPH_PORT_LAST 6900
|
|
|
|
/*
|
|
* tcp connection banner. include a protocol version. and adjust
|
|
* whenever the wire protocol changes. try to keep this string length
|
|
* constant.
|
|
*/
|
|
#define CEPH_BANNER "ceph v027"
|
|
#define CEPH_BANNER_MAX_LEN 30
|
|
|
|
|
|
/*
|
|
* Rollover-safe type and comparator for 32-bit sequence numbers.
|
|
* Comparator returns -1, 0, or 1.
|
|
*/
|
|
typedef __u32 ceph_seq_t;
|
|
|
|
static inline __s32 ceph_seq_cmp(__u32 a, __u32 b)
|
|
{
|
|
return (__s32)a - (__s32)b;
|
|
}
|
|
|
|
|
|
/*
|
|
* entity_name -- logical name for a process participating in the
|
|
* network, e.g. 'mds0' or 'osd3'.
|
|
*/
|
|
struct ceph_entity_name {
|
|
__u8 type; /* CEPH_ENTITY_TYPE_* */
|
|
__le64 num;
|
|
} __attribute__ ((packed));
|
|
|
|
#define CEPH_ENTITY_TYPE_MON 0x01
|
|
#define CEPH_ENTITY_TYPE_MDS 0x02
|
|
#define CEPH_ENTITY_TYPE_OSD 0x04
|
|
#define CEPH_ENTITY_TYPE_CLIENT 0x08
|
|
#define CEPH_ENTITY_TYPE_AUTH 0x20
|
|
|
|
#define CEPH_ENTITY_TYPE_ANY 0xFF
|
|
|
|
extern const char *ceph_entity_type_name(int type);
|
|
|
|
/*
|
|
* entity_addr -- network address
|
|
*/
|
|
struct ceph_entity_addr {
|
|
__le32 type;
|
|
__le32 nonce; /* unique id for process (e.g. pid) */
|
|
struct sockaddr_storage in_addr;
|
|
} __attribute__ ((packed));
|
|
|
|
struct ceph_entity_inst {
|
|
struct ceph_entity_name name;
|
|
struct ceph_entity_addr addr;
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
/* used by message exchange protocol */
|
|
#define CEPH_MSGR_TAG_READY 1 /* server->client: ready for messages */
|
|
#define CEPH_MSGR_TAG_RESETSESSION 2 /* server->client: reset, try again */
|
|
#define CEPH_MSGR_TAG_WAIT 3 /* server->client: wait for racing
|
|
incoming connection */
|
|
#define CEPH_MSGR_TAG_RETRY_SESSION 4 /* server->client + cseq: try again
|
|
with higher cseq */
|
|
#define CEPH_MSGR_TAG_RETRY_GLOBAL 5 /* server->client + gseq: try again
|
|
with higher gseq */
|
|
#define CEPH_MSGR_TAG_CLOSE 6 /* closing pipe */
|
|
#define CEPH_MSGR_TAG_MSG 7 /* message */
|
|
#define CEPH_MSGR_TAG_ACK 8 /* message ack */
|
|
#define CEPH_MSGR_TAG_KEEPALIVE 9 /* just a keepalive byte! */
|
|
#define CEPH_MSGR_TAG_BADPROTOVER 10 /* bad protocol version */
|
|
#define CEPH_MSGR_TAG_BADAUTHORIZER 11 /* bad authorizer */
|
|
#define CEPH_MSGR_TAG_FEATURES 12 /* insufficient features */
|
|
#define CEPH_MSGR_TAG_SEQ 13 /* 64-bit int follows with seen seq number */
|
|
#define CEPH_MSGR_TAG_KEEPALIVE2 14 /* keepalive2 byte + ceph_timespec */
|
|
#define CEPH_MSGR_TAG_KEEPALIVE2_ACK 15 /* keepalive2 reply */
|
|
|
|
|
|
/*
|
|
* connection negotiation
|
|
*/
|
|
struct ceph_msg_connect {
|
|
__le64 features; /* supported feature bits */
|
|
__le32 host_type; /* CEPH_ENTITY_TYPE_* */
|
|
__le32 global_seq; /* count connections initiated by this host */
|
|
__le32 connect_seq; /* count connections initiated in this session */
|
|
__le32 protocol_version;
|
|
__le32 authorizer_protocol;
|
|
__le32 authorizer_len;
|
|
__u8 flags; /* CEPH_MSG_CONNECT_* */
|
|
} __attribute__ ((packed));
|
|
|
|
struct ceph_msg_connect_reply {
|
|
__u8 tag;
|
|
__le64 features; /* feature bits for this session */
|
|
__le32 global_seq;
|
|
__le32 connect_seq;
|
|
__le32 protocol_version;
|
|
__le32 authorizer_len;
|
|
__u8 flags;
|
|
} __attribute__ ((packed));
|
|
|
|
#define CEPH_MSG_CONNECT_LOSSY 1 /* messages i send may be safely dropped */
|
|
|
|
|
|
/*
|
|
* message header
|
|
*/
|
|
struct ceph_msg_header_old {
|
|
__le64 seq; /* message seq# for this session */
|
|
__le64 tid; /* transaction id */
|
|
__le16 type; /* message type */
|
|
__le16 priority; /* priority. higher value == higher priority */
|
|
__le16 version; /* version of message encoding */
|
|
|
|
__le32 front_len; /* bytes in main payload */
|
|
__le32 middle_len;/* bytes in middle payload */
|
|
__le32 data_len; /* bytes of data payload */
|
|
__le16 data_off; /* sender: include full offset;
|
|
receiver: mask against ~PAGE_MASK */
|
|
|
|
struct ceph_entity_inst src, orig_src;
|
|
__le32 reserved;
|
|
__le32 crc; /* header crc32c */
|
|
} __attribute__ ((packed));
|
|
|
|
struct ceph_msg_header {
|
|
__le64 seq; /* message seq# for this session */
|
|
__le64 tid; /* transaction id */
|
|
__le16 type; /* message type */
|
|
__le16 priority; /* priority. higher value == higher priority */
|
|
__le16 version; /* version of message encoding */
|
|
|
|
__le32 front_len; /* bytes in main payload */
|
|
__le32 middle_len;/* bytes in middle payload */
|
|
__le32 data_len; /* bytes of data payload */
|
|
__le16 data_off; /* sender: include full offset;
|
|
receiver: mask against ~PAGE_MASK */
|
|
|
|
struct ceph_entity_name src;
|
|
__le16 compat_version;
|
|
__le16 reserved;
|
|
__le32 crc; /* header crc32c */
|
|
} __attribute__ ((packed));
|
|
|
|
#define CEPH_MSG_PRIO_LOW 64
|
|
#define CEPH_MSG_PRIO_DEFAULT 127
|
|
#define CEPH_MSG_PRIO_HIGH 196
|
|
#define CEPH_MSG_PRIO_HIGHEST 255
|
|
|
|
/*
|
|
* follows data payload
|
|
*/
|
|
struct ceph_msg_footer_old {
|
|
__le32 front_crc, middle_crc, data_crc;
|
|
__u8 flags;
|
|
} __attribute__ ((packed));
|
|
|
|
struct ceph_msg_footer {
|
|
__le32 front_crc, middle_crc, data_crc;
|
|
// sig holds the 64 bits of the digital signature for the message PLR
|
|
__le64 sig;
|
|
__u8 flags;
|
|
} __attribute__ ((packed));
|
|
|
|
#define CEPH_MSG_FOOTER_COMPLETE (1<<0) /* msg wasn't aborted */
|
|
#define CEPH_MSG_FOOTER_NOCRC (1<<1) /* no data crc */
|
|
#define CEPH_MSG_FOOTER_SIGNED (1<<2) /* msg was signed */
|
|
|
|
|
|
#endif
|