File: 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 0.84 (20010115) 
	- all output now sent to stderr rather thatn stdout
	- remove header files included in this file
*/


/* 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. */

/* 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_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);

/* 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) */
int sg_get_command_size(unsigned char opcode);

#endif