mirror of
https://github.com/ibm-s390-linux/s390-tools.git
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b627b8d8e1
This commit is based on the s390-tools-1.39.0 version. Changes on top of s390-tools-1.39.0: - Add MIT license to all source files - Add LICENSE file - Transform REAMDE to README.md (markdown) - Add AUTHORS.md file - Add CONTRIBUTING.md file - Move changelog from README to CHANGELOG.md file Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
242 lines
6.5 KiB
C++
242 lines
6.5 KiB
C++
/*
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* FCP report generators
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*
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* Utility classes to read and access FCP configuration information
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*
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* Copyright IBM Corp. 2008, 2017
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef ZIOMON_CFGREADER
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#define ZIOMON_CFGREADER
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#include <stdio.h>
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#include <list>
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#include <linux/types.h>
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extern "C" {
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#include "ziomon_util.h"
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}
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using std::list;
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/**
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* Parses a file holding the system-wide available devices. Since this
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* is more than what is in the data, the devices are filtered, stripping
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* it down to devices only actually used in the data.
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*/
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class ConfigReader {
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public:
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ConfigReader(int *rc, const char *filename);
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~ConfigReader();
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/// rc is only set on error!
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__u32 get_chpid_by_host_id(__u32 h, int *rc) const;
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/// rc is only set on error!
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__u32 get_chpid_by_devno(__u32 devno, int *rc) const;
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/// rc is only set on error!
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__u32 get_chpid_by_ident(const struct hctl_ident *ident, int *rc) const;
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/// rc is only set on error!
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__u32 get_chpid_by_mm_internal(__u32 mm, int *rc) const;
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/// rc is only set on error!
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__u32 get_host_id_by_chpid(__u32 chpid, int *rc) const;
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/// rc is only set on error!
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__u32 get_devno_by_host_id(__u32 h, int *rc) const;
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/// rc is only set on error!
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__u32 get_devno_by_ident(const struct hctl_ident *ident, int *rc) const;
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/// rc is only set on error!
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__u32 get_devno_by_mm_internal(__u32 mm, int *rc) const;
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/// rc is only set on error!
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__u32 get_mp_mm_by_multipath(const char* mp, int *rc) const;
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/// rc is only set on error!
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const char* get_multipath_by_mp_mm(__u32 mp_mm, int *rc) const;
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/// rc is only set on error!
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__u64 get_wwpn_by_ident(const struct hctl_ident *ident, int *rc) const;
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/// rc is only set on error!
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__u64 get_wwpn_by_mm_internal(__u32 mm, int *rc) const;
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/// rc is only set on error!
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__u32 get_mp_mm_by_ident(const struct hctl_ident *ident, int *rc) const;
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/// rc is only set on error!
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__u32 get_mp_mm_by_mm_internal(__u32 mm, int *rc) const;
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/// rc is only set on error!
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__u64 get_lun_by_mm_internal(__u32 mm_internal, int *rc) const;
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/// rc is only set on error!
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const char* get_dev_by_mm_internal(__u32 mm_internal, int *rc) const;
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/// rc is only set on error!
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__u32 get_mm_by_ident(const struct hctl_ident *id, int *rc) const;
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/// rc is only set on error!
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__u32 get_mm_by_device(const char *dev, int *rc) const;
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/// rc is only set on error!
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const struct hctl_ident* get_ident_by_mm_internal(__u32 mm, int *rc) const;
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void get_unique_wwpns(list<__u64> &lst) const;
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void get_unique_devnos(list<__u32> &lst) const;
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void get_unique_chpids(list<__u32> &lst) const;
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void get_unique_mp_mms(list<__u32> &lst) const;
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void get_unique_mms(list<__u32> &mms) const;
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void get_unique_devices(list<struct hctl_ident> &idents) const;
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void get_unique_host_ids(list<__u32> &host_ids) const;
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void get_devnos_by_chpid(list<__u32> &devnos, __u32 chpid) const;
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void get_devnos_by_host_id(list<__u32> &devnos, __u32 host_id) const;
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void get_mms_by_chpid(list<__u32> &mms, __u32 chpid) const;
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void get_mms_by_mp_mm(list<__u32> &mms, __u32 mp_mm) const;
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void get_mms_by_wwpn(list<__u32> &mms, __u64 wwpn) const;
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void get_mms_by_devno(list<__u32> &mms, __u32 devno) const;
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void get_mms_by_lun(list<__u32> &mms, __u64 lun) const;
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/// returns 'true' in case it exists, 'false' otherwise
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bool verify_chpid(__u32 chpid) const;
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/// returns 'true' in case it exists, 'false' otherwise
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bool verify_device(const char *) const;
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/// returns 'true' in case it exists, 'false' otherwise
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bool verify_mp_device(const char *) const;
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/// returns 'true' in case it exists, 'false' otherwise
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bool verify_wwpn(__u64 wwpn) const;
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/// returns 'true' in case it exists, 'false' otherwise
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bool verify_devno(__u32 devno) const;
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/// returns 'true' in case it exists, 'false' otherwise
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bool verify_lun(__u64 lun) const;
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/// debugging
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void dump(FILE *fp) const;
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private:
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/** compare currently held devices with devices as found
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* in the actual data, and remove anything that is unused */
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int filter_unused_devices(const char *filename);
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int check_config_file(const char *fname) const;
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int extract_config_data(const char *fname);
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int extract(const char *fname);
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int extract_tmp(const char *fname);
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int extract_cached(const char *fname);
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bool cached_config_exists(const char *fname);
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struct device_info {
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// chpid, e.g. 43 (hex)
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__u32 chpid;
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// kernel-internal major/minor representation, e.g. 2096 (number)
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__u32 mm_internal;
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// fcp device identifier, e.g. 0:0:17:1075920929
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struct hctl_ident hctl_identifier;
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// subchannel bus-ID and device bus-ID are packed into 32 bits:
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// channel subsystem (1 byte), subchannel set (1 byte),
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// subchannel or device number (2 bytes)
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// use accessors ZIOREP_BUSID_PACKED and ZIOREP_BUSID_UNPACKED
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__u32 subchannel;
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__u32 devno;
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__u64 wwpn;
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__u64 lun;
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// multipath device, e.g. /dev/mapper/2376878489249234
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char *multipath_device;
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// maj/min of multipath device, e.g. 0:0
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__u32 mp_major;
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__u32 mp_minor;
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__u32 mp_mm; // NOT IN INPUT-DATA!!!
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// device node, e.g. /dev/sda
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char *device;
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// major/minor, e.g. 8:48
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__u32 major;
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__u32 minor;
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// device type, e.g. "Disk"
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char *type;
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};
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list<struct device_info> m_devices;
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/**
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* File holding the internal representation of the configuration
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* data. If m_cfg_cached is false, then it must be removed once
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* we are done. Otherwise we can leave as is for successive runs. */
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char *m_tmp_file;
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/**
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* If this is set, then we didn't extract the configuration data to
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* /tmp but rather created an additional .config file which we leave
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* for successive runs. */
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bool m_cfg_cached;
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/**
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* Returns the offset of the first appearance of 'c'
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* within p. */
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int get_index_to(char *p, char c) const;
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void init_device_info(struct device_info *info);
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void free_device_info(struct device_info *info);
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int extract_adapter_info(char *p, struct device_info *info);
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int extract_adapter_info_sub(char **tgt, char *p, char delim);
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void host_id_not_found_error(__u32 h, int *rc) const;
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void devno_not_found_error(__u32 d, int *rc) const;
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void chpid_not_found_error(__u32 chpid, int *rc) const;
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void lun_not_found_error(__u64 lun, int *rc) const;
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void ident_not_found_error(const struct hctl_ident *ident, int *rc) const;
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void mm_internal_not_found_error(__u32 mm, int *rc) const;
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void device_not_found_error(const char*, int *rc) const;
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void mp_not_found_error(const char* mp, int *rc) const;
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void mp_mm_not_found_error(__u32 mp_mm, int *rc) const;
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};
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#endif
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