Google
Edit File: chio.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * ioctl interface for the scsi media changer driver */ #ifndef _LINUX_CHIO_H #define _LINUX_CHIO_H /* changer element types */ #define CHET_MT 0 /* media transport element (robot) */ #define CHET_ST 1 /* storage element (media slots) */ #define CHET_IE 2 /* import/export element */ #define CHET_DT 3 /* data transfer element (tape/cdrom/whatever) */ #define CHET_V1 4 /* vendor specific #1 */ #define CHET_V2 5 /* vendor specific #2 */ #define CHET_V3 6 /* vendor specific #3 */ #define CHET_V4 7 /* vendor specific #4 */ /* * CHIOGPARAMS * query changer properties * * CHIOVGPARAMS * query vendor-specific element types * * accessing elements works by specifing type and unit of the element. * for example, storage elements are addressed with type = CHET_ST and * unit = 0 .. cp_nslots-1 * */ struct changer_params { int cp_curpicker; /* current transport element */ int cp_npickers; /* number of transport elements (CHET_MT) */ int cp_nslots; /* number of storage elements (CHET_ST) */ int cp_nportals; /* number of import/export elements (CHET_IE) */ int cp_ndrives; /* number of data transfer elements (CHET_DT) */ }; struct changer_vendor_params { int cvp_n1; /* number of vendor specific elems (CHET_V1) */ char cvp_label1[16]; int cvp_n2; /* number of vendor specific elems (CHET_V2) */ char cvp_label2[16]; int cvp_n3; /* number of vendor specific elems (CHET_V3) */ char cvp_label3[16]; int cvp_n4; /* number of vendor specific elems (CHET_V4) */ char cvp_label4[16]; int reserved[8]; }; /* * CHIOMOVE * move a medium from one element to another */ struct changer_move { int cm_fromtype; /* type/unit of source element */ int cm_fromunit; int cm_totype; /* type/unit of destination element */ int cm_tounit; int cm_flags; }; #define CM_INVERT 1 /* flag: rotate media (for double-sided like MOD) */ /* * CHIOEXCHANGE * move one medium from element #1 to element #2, * and another one from element #2 to element #3. * element #1 and #3 are allowed to be identical. */ struct changer_exchange { int ce_srctype; /* type/unit of element #1 */ int ce_srcunit; int ce_fdsttype; /* type/unit of element #2 */ int ce_fdstunit; int ce_sdsttype; /* type/unit of element #3 */ int ce_sdstunit; int ce_flags; }; #define CE_INVERT1 1 #define CE_INVERT2 2 /* * CHIOPOSITION * move the transport element (robot arm) to a specific element. */ struct changer_position { int cp_type; int cp_unit; int cp_flags; }; #define CP_INVERT 1 /* * CHIOGSTATUS * get element status for all elements of a specific type */ struct changer_element_status { int ces_type; unsigned char *ces_data; }; #define CESTATUS_FULL 0x01 /* full */ #define CESTATUS_IMPEXP 0x02 /* media was imported (inserted by sysop) */ #define CESTATUS_EXCEPT 0x04 /* error condition */ #define CESTATUS_ACCESS 0x08 /* access allowed */ #define CESTATUS_EXENAB 0x10 /* element can export media */ #define CESTATUS_INENAB 0x20 /* element can import media */ /* * CHIOGELEM * get more detailed status information for a single element */ struct changer_get_element { int cge_type; /* type/unit */ int cge_unit; int cge_status; /* status */ int cge_errno; /* errno */ int cge_srctype; /* source element of the last move/exchange */ int cge_srcunit; int cge_id; /* scsi id (for data transfer elements) */ int cge_lun; /* scsi lun (for data transfer elements) */ char cge_pvoltag[36]; /* primary volume tag */ char cge_avoltag[36]; /* alternate volume tag */ int cge_flags; }; /* flags */ #define CGE_ERRNO 0x01 /* errno available */ #define CGE_INVERT 0x02 /* media inverted */ #define CGE_SRC 0x04 /* media src available */ #define CGE_IDLUN 0x08 /* ID+LUN available */ #define CGE_PVOLTAG 0x10 /* primary volume tag available */ #define CGE_AVOLTAG 0x20 /* alternate volume tag available */ /* * CHIOSVOLTAG * set volume tag */ struct changer_set_voltag { int csv_type; /* type/unit */ int csv_unit; char csv_voltag[36]; /* volume tag */ int csv_flags; }; #define CSV_PVOLTAG 0x01 /* primary volume tag */ #define CSV_AVOLTAG 0x02 /* alternate volume tag */ #define CSV_CLEARTAG 0x04 /* clear volume tag */ /* ioctls */ #define CHIOMOVE _IOW('c', 1,struct changer_move) #define CHIOEXCHANGE _IOW('c', 2,struct changer_exchange) #define CHIOPOSITION _IOW('c', 3,struct changer_position) #define CHIOGPICKER _IOR('c', 4,int) /* not impl. */ #define CHIOSPICKER _IOW('c', 5,int) /* not impl. */ #define CHIOGPARAMS _IOR('c', 6,struct changer_params) #define CHIOGSTATUS _IOW('c', 8,struct changer_element_status) #define CHIOGELEM _IOW('c',16,struct changer_get_element) #define CHIOINITELEM _IO('c',17) #define CHIOSVOLTAG _IOW('c',18,struct changer_set_voltag) #define CHIOGVPARAMS _IOR('c',19,struct changer_vendor_params) #endif /* _LINUX_CHIO_H */