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snapapi26-0.8.58
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snumbd.h
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#ifndef _LINUX_SNUMBDCALLUSER_H #define _LINUX_SNUMBDCALLUSER_H /* snumbd.h Copyright (C) Acronis, 2004 Written by Vladimir Simonov $Id: snumbd.h 1262030 2018-01-11 12:33:11Z marina $ */ #ifdef __linux__ #include <linux/types.h> #include <linux/ioctl.h> #endif #include "sn_huge_ptr.h" #define SNUMBD_NAME "snumbd" #define SNUMBDCTL_NAME "snumbdctl" #define SNUMBDCTLTYPE '*' #define SNUMBD_VMAJOR 0 #define SNUMBD_VMINOR 8 #define SNUMBD_VSUBMINOR 58 #define SNUMBD_COMMON_MOD_VERSION "0.8.58" #define SNUMBD_COMMON_MOD_EXT_VERSION "(Release)" #pragma pack(1) struct snumbdctl_init { unsigned long long scount; /* sectors count (sector = 512) */ int dev_ro; /* read-only mode */ }; struct snumbdctl_init_v2 { unsigned long long scount; /* sectors count */ unsigned int sector_size; /* sector size */ int dev_ro; /* read-only mode */ }; struct snumbd_req { /* to user level */ unsigned int cmd; unsigned int offset; unsigned long long sno; /* sector no */ unsigned int len; #define READ_DATA 0 #define WRITE_DATA 1 #define STOP 2 #define ERROR_FLAG (1<<(sizeof(unsigned int)*8 - 1)) }; struct snumbdctl_req { /* to user level */ SN_HUGE_PTR(struct snumbd_req *req); /* user-level buffer */ unsigned int size; /* size of user buf */ }; struct snumbdctl_dataready { SN_HUGE_PTR(const struct snumbd_req *req);/* user-level buffer */ unsigned int size; }; struct snumbd_state { unsigned int version; unsigned int major; unsigned int minor; unsigned int state; /* session state */ unsigned int hpid; /* usermode host pid */ unsigned long long scount; /* sectors count (sector = 512) */ int mmapsize; /* mmap max size in bytes */ /* current values */ unsigned int sessions; /* total number of sessions */ unsigned int gpages; /* got pages */ unsigned int ppages; /* put pages */ unsigned int ioctlcnt; int users; /* session states */ #define SNUM_NOTINITED 0 #define SNUM_ININIT 1 #define SNUM_INITED 2 #define SNUM_WAKEUP_REQ 3 #define SNUM_REQ_RECV 4 #define SNUM_DATA_READY 5 #define SNUM_ACTIVATING_ERR (1 << 8) #define SNUM_SESSION_ERR (2 << 8) #define SNUM_DEADLOCK_ERR (3 << 8) #define IS_ERROR_STATE(x) ((x) >= SNUM_ACTIVATING_ERR) }; struct snumbdctl_state { /* current session state */ SN_HUGE_PTR(struct snumbd_state *state);/* user-level buffer */ unsigned int size; /* size of user buf */ }; struct snumbdctl_states { /* all sessions states */ SN_HUGE_PTR(struct snumbd_state *state);/* user-level buffer */ unsigned int size; /* size of user buf */ }; struct snumbdctl_pgrp { /* Allowed PGRP */ pid_t allowed_pgrp; }; #define SNUMBDCTL_INIT _IO(SNUMBDCTLTYPE, 0) #define SNUMBDCTL_STOP _IO(SNUMBDCTLTYPE, 1) #define SNUMBDCTL_REQ _IOW(SNUMBDCTLTYPE, 2, \ struct snumbdctl_req) #define SNUMBDCTL_DATAREADY _IOW(SNUMBDCTLTYPE, 3, \ struct snumbdctl_dataready) #define SNUMBDCTL_STATE _IOW(SNUMBDCTLTYPE, 4, \ struct snumbdctl_state) #define SNUMBDCTL_STATES _IOW(SNUMBDCTLTYPE, 5, \ struct snumbdctl_state) #define SNUMBDCTL_INIT_V2 _IO(SNUMBDCTLTYPE, 6) #define SNUMBDCTL_PGRP _IOW(SNUMBDCTLTYPE, 7, \ struct snumbdctl_pgrp) #pragma pack() #endif /* _LINUX_SNUMBDCALLUSER_H */