906d15fbd2
The calling conventions for this function are bad as it could return -ENODEV both for a device not currently online and a not recognized ioctl. Add a new scsi_ioctl_block_when_processing_errors function that wraps scsi_block_when_processing_errors with the a special case for the SG_SCSI_RESET ioctl command, and handle the SG_SCSI_RESET case itself in scsi_ioctl. All callers of scsi_ioctl now must call the above helper to check for the EH state, so that the ioctl handler itself doesn't have to. Reported-by: Robert Elliott <Elliott@hp.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
#ifndef _SCSI_IOCTL_H
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#define _SCSI_IOCTL_H
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#define SCSI_IOCTL_SEND_COMMAND 1
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#define SCSI_IOCTL_TEST_UNIT_READY 2
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#define SCSI_IOCTL_BENCHMARK_COMMAND 3
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#define SCSI_IOCTL_SYNC 4 /* Request synchronous parameters */
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#define SCSI_IOCTL_START_UNIT 5
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#define SCSI_IOCTL_STOP_UNIT 6
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/* The door lock/unlock constants are compatible with Sun constants for
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the cdrom */
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#define SCSI_IOCTL_DOORLOCK 0x5380 /* lock the eject mechanism */
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#define SCSI_IOCTL_DOORUNLOCK 0x5381 /* unlock the mechanism */
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#define SCSI_REMOVAL_PREVENT 1
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#define SCSI_REMOVAL_ALLOW 0
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#ifdef __KERNEL__
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struct scsi_device;
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/*
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* Structures used for scsi_ioctl et al.
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*/
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typedef struct scsi_ioctl_command {
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unsigned int inlen;
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unsigned int outlen;
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unsigned char data[0];
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} Scsi_Ioctl_Command;
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typedef struct scsi_idlun {
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__u32 dev_id;
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__u32 host_unique_id;
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} Scsi_Idlun;
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/* Fibre Channel WWN, port_id struct */
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typedef struct scsi_fctargaddress {
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__u32 host_port_id;
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unsigned char host_wwn[8]; // include NULL term.
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} Scsi_FCTargAddress;
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int scsi_ioctl_block_when_processing_errors(struct scsi_device *sdev,
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int cmd, bool ndelay);
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extern int scsi_ioctl(struct scsi_device *, int, void __user *);
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#endif /* __KERNEL__ */
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#endif /* _SCSI_IOCTL_H */
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