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A fix for the SG_GET_TIMEOUT function slipped into a previous commit by

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accident.  Remove the text describing the problem as it is no longer
relevant.  Also give real implementations for the GET and SET ioctls.
This commit is contained in:
Scott Long 2007-04-10 20:03:42 +00:00
parent affde8a968
commit 715ab2120d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=168598
2 changed files with 22 additions and 8 deletions
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25
sys/cam/scsi/scsi_sg.c
View file

@ -100,11 +100,13 @@ struct sg_rdwr {
struct sg_softc {
sg_state state;
sg_flags flags;
uint8_t pd_type;
struct devstat *device_stats;
TAILQ_HEAD(, sg_rdwr) rdwr_done;
struct cdev *dev;
struct cdev *devalias;
int sg_timeout;
int sg_user_timeout;
uint8_t pd_type;
union ccb saved_ccb;
};
@ -297,6 +299,8 @@ sgregister(struct cam_periph *periph, void *arg)
softc->state = SG_STATE_NORMAL;
softc->pd_type = SID_TYPE(&cgd->inq_data);
softc->sg_timeout = SG_DEFAULT_TIMEOUT / SG_DEFAULT_HZ * hz;
softc->sg_user_timeout = SG_DEFAULT_TIMEOUT;
TAILQ_INIT(&softc->rdwr_done);
periph->softc = softc;
@ -495,17 +499,22 @@ sgioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
error = copyout(&sg_version, arg, sizeof(sg_version));
break;
case SG_SET_TIMEOUT:
case LINUX_SG_SET_TIMEOUT:
case LINUX_SG_SET_TIMEOUT: {
u_int user_timeout;
error = copyin(arg, &user_timeout, sizeof(u_int));
if (error == 0) {
softc->sg_user_timeout = user_timeout;
softc->sg_timeout = user_timeout / SG_DEFAULT_HZ * hz;
}
break;
}
case SG_GET_TIMEOUT:
case LINUX_SG_GET_TIMEOUT:
/*
* XXX This ioctl is highly brain damaged because it requires
* that the value be returned in the syscall return value.
* The linuxolator seems to have a hard time with this,
* so just return 0 and hope that apps can cope.
* The value is returned directly to the syscall.
*/
td->td_retval[0] = 60*hz;
td->td_retval[0] = softc->sg_user_timeout;
error = 0;
break;
case SG_IO:
@ -751,7 +760,7 @@ sgwrite(struct cdev *dev, struct uio *uio, int ioflag)
buf_len,
SG_MAX_SENSE,
cdb_len,
60*hz);
sc->sg_timeout);
/*
* Send off the command and hope that it works. This path does not

5
sys/cam/scsi/scsi_sg.h
View file

@ -136,4 +136,9 @@ struct scsi_idlun {
#define DRIVER_MASK 0x0f
#define SUGGEST_MASK 0xf0
/* Other definitions */
/* HZ isn't always available, so simulate it */
#define SG_DEFAULT_HZ 1000
#define SG_DEFAULT_TIMEOUT (60*SG_DEFAULT_HZ)
#endif /* !_SCSI_SG_H */