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systemd-stable/extras/multipath/sg_err.h

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#ifndef SG_ERR_H
#define SG_ERR_H
/* Feel free to copy and modify this GPL-ed code into your applications. */
/* Version 0.90 (20030519)
*/
/* Some of the following error/status codes are exchanged between the
various layers of the SCSI sub-system in Linux and should never
reach the user. They are placed here for completeness. What appears
here is copied from drivers/scsi/scsi.h which is not visible in
the user space. */
#ifndef SCSI_CHECK_CONDITION
/* Following are the "true" SCSI status codes. Linux has traditionally
used a 1 bit right and masked version of these. So now CHECK_CONDITION
and friends (in <scsi/scsi.h>) are deprecated. */
#define SCSI_CHECK_CONDITION 0x2
#define SCSI_CONDITION_MET 0x4
#define SCSI_BUSY 0x8
#define SCSI_IMMEDIATE 0x10
#define SCSI_IMMEDIATE_CONDITION_MET 0x14
#define SCSI_RESERVATION_CONFLICT 0x18
#define SCSI_COMMAND_TERMINATED 0x22
#define SCSI_TASK_SET_FULL 0x28
#define SCSI_ACA_ACTIVE 0x30
#define SCSI_TASK_ABORTED 0x40
#endif
/* The following are 'host_status' codes */
#ifndef DID_OK
#define DID_OK 0x00
#endif
#ifndef DID_NO_CONNECT
#define DID_NO_CONNECT 0x01 /* Unable to connect before timeout */
#define DID_BUS_BUSY 0x02 /* Bus remain busy until timeout */
#define DID_TIME_OUT 0x03 /* Timed out for some other reason */
#define DID_BAD_TARGET 0x04 /* Bad target (id?) */
#define DID_ABORT 0x05 /* Told to abort for some other reason */
#define DID_PARITY 0x06 /* Parity error (on SCSI bus) */
#define DID_ERROR 0x07 /* Internal error */
#define DID_RESET 0x08 /* Reset by somebody */
#define DID_BAD_INTR 0x09 /* Received an unexpected interrupt */
#define DID_PASSTHROUGH 0x0a /* Force command past mid-level */
#define DID_SOFT_ERROR 0x0b /* The low-level driver wants a retry */
#endif
/* These defines are to isolate applictaions from kernel define changes */
#define SG_ERR_DID_OK DID_OK
#define SG_ERR_DID_NO_CONNECT DID_NO_CONNECT
#define SG_ERR_DID_BUS_BUSY DID_BUS_BUSY
#define SG_ERR_DID_TIME_OUT DID_TIME_OUT
#define SG_ERR_DID_BAD_TARGET DID_BAD_TARGET
#define SG_ERR_DID_ABORT DID_ABORT
#define SG_ERR_DID_PARITY DID_PARITY
#define SG_ERR_DID_ERROR DID_ERROR
#define SG_ERR_DID_RESET DID_RESET
#define SG_ERR_DID_BAD_INTR DID_BAD_INTR
#define SG_ERR_DID_PASSTHROUGH DID_PASSTHROUGH
#define SG_ERR_DID_SOFT_ERROR DID_SOFT_ERROR
/* The following are 'driver_status' codes */
#ifndef DRIVER_OK
#define DRIVER_OK 0x00
#endif
#ifndef DRIVER_BUSY
#define DRIVER_BUSY 0x01
#define DRIVER_SOFT 0x02
#define DRIVER_MEDIA 0x03
#define DRIVER_ERROR 0x04
#define DRIVER_INVALID 0x05
#define DRIVER_TIMEOUT 0x06
#define DRIVER_HARD 0x07
#define DRIVER_SENSE 0x08 /* Sense_buffer has been set */
/* Following "suggests" are "or-ed" with one of previous 8 entries */
#define SUGGEST_RETRY 0x10
#define SUGGEST_ABORT 0x20
#define SUGGEST_REMAP 0x30
#define SUGGEST_DIE 0x40
#define SUGGEST_SENSE 0x80
#define SUGGEST_IS_OK 0xff
#endif
#ifndef DRIVER_MASK
#define DRIVER_MASK 0x0f
#endif
#ifndef SUGGEST_MASK
#define SUGGEST_MASK 0xf0
#endif
/* These defines are to isolate applictaions from kernel define changes */
#define SG_ERR_DRIVER_OK DRIVER_OK
#define SG_ERR_DRIVER_BUSY DRIVER_BUSY
#define SG_ERR_DRIVER_SOFT DRIVER_SOFT
#define SG_ERR_DRIVER_MEDIA DRIVER_MEDIA
#define SG_ERR_DRIVER_ERROR DRIVER_ERROR
#define SG_ERR_DRIVER_INVALID DRIVER_INVALID
#define SG_ERR_DRIVER_TIMEOUT DRIVER_TIMEOUT
#define SG_ERR_DRIVER_HARD DRIVER_HARD
#define SG_ERR_DRIVER_SENSE DRIVER_SENSE
#define SG_ERR_SUGGEST_RETRY SUGGEST_RETRY
#define SG_ERR_SUGGEST_ABORT SUGGEST_ABORT
#define SG_ERR_SUGGEST_REMAP SUGGEST_REMAP
#define SG_ERR_SUGGEST_DIE SUGGEST_DIE
#define SG_ERR_SUGGEST_SENSE SUGGEST_SENSE
#define SG_ERR_SUGGEST_IS_OK SUGGEST_IS_OK
#define SG_ERR_DRIVER_MASK DRIVER_MASK
#define SG_ERR_SUGGEST_MASK SUGGEST_MASK
/* The following "print" functions send ACSII to stdout */
extern void sg_print_command(const unsigned char * command);
extern void sg_print_sense(const char * leadin,
const unsigned char * sense_buffer, int sb_len);
extern void sg_print_status(int masked_status);
extern void sg_print_scsi_status(int scsi_status);
extern void sg_print_host_status(int host_status);
extern void sg_print_driver_status(int driver_status);
/* sg_chk_n_print() returns 1 quietly if there are no errors/warnings
else it prints to standard output and returns 0. */
extern int sg_chk_n_print(const char * leadin, int masked_status,
int host_status, int driver_status,
const unsigned char * sense_buffer, int sb_len);
/* The following function declaration is for the sg version 3 driver.
Only version 3 sg_err.c defines it. */
struct sg_io_hdr;
extern int sg_chk_n_print3(const char * leadin, struct sg_io_hdr * hp);
/* The following "category" function returns one of the following */
#define SG_ERR_CAT_CLEAN 0 /* No errors or other information */
#define SG_ERR_CAT_MEDIA_CHANGED 1 /* interpreted from sense buffer */
#define SG_ERR_CAT_RESET 2 /* interpreted from sense buffer */
#define SG_ERR_CAT_TIMEOUT 3
#define SG_ERR_CAT_RECOVERED 4 /* Successful command after recovered err */
#define SG_ERR_CAT_SENSE 98 /* Something else is in the sense buffer */
#define SG_ERR_CAT_OTHER 99 /* Some other error/warning has occurred */
extern int sg_err_category(int masked_status, int host_status,
int driver_status, const unsigned char * sense_buffer,
int sb_len);
extern int sg_err_category_new(int scsi_status, int host_status,
int driver_status, const unsigned char * sense_buffer,
int sb_len);
/* The following function declaration is for the sg version 3 driver.
Only version 3 sg_err.c defines it. */
extern int sg_err_category3(struct sg_io_hdr * hp);
/* Returns length of SCSI command given the opcode (first byte) */
extern int sg_get_command_size(unsigned char opcode);
extern void sg_get_command_name(unsigned char opcode, int buff_len,
char * buff);
#endif
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