MFSH UNPHYSTOVIRT: Difference between revisions
Created page with "{{DISPLAYTITLE:MFSH_UNPHYSTOVIR}} Release the selector allocated previously by calling MFSH_PHYSTOVIRT. ==Syntax== int far pascal MFSH_UNPHYSTOVIRT(usSel)unsigned short usSel..." |
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{{DISPLAYTITLE:MFSH_UNPHYSTOVIR}} | {{DISPLAYTITLE:MFSH_UNPHYSTOVIR}} | ||
Release the selector allocated previously by calling MFSH_PHYSTOVIRT. | Release the selector allocated previously by calling [[MFSH_PHYSTOVIRT]]. | ||
==Syntax== | ==Syntax== | ||
int far pascal MFSH_UNPHYSTOVIRT(usSel)unsigned short usSel; | int far pascal MFSH_UNPHYSTOVIRT(usSel)unsigned short usSel; | ||
==Parameters== | ==Parameters== | ||
; usSel : contains the selector to released. | ;usSel : contains the selector to released. | ||
==Returns== | ==Returns== | ||
If no error is detected, a zero error code is returned. If an error is detected, the following error code is returned: | If no error is detected, a zero error code is returned. If an error is detected, the following error code is returned: | ||
; ERROR_PROTECTION_VIOLATION: the supplied selector is invalid. | ;ERROR_PROTECTION_VIOLATION: the supplied selector is invalid. | ||
==Sample== | ==Sample== | ||
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int far pascal MFSH_UNPHYSTOVIRT(usSel) | int far pascal MFSH_UNPHYSTOVIRT(usSel) | ||
==Remarks== | ==Remarks== | ||
This helper is for use by a mini-FSD with an imbedded device driver. It is the same as the standard device driver UNPHYSTOVIRT helper. | This helper is for use by a mini-FSD with an imbedded device driver. It is the same as the standard device driver UNPHYSTOVIRT helper. | ||
A caller must issue a corresponding UNPHYSTOVIRT after calling PHYSTOVIRT, before returning to its caller or using any other helpers. | A caller must issue a corresponding UNPHYSTOVIRT after calling PHYSTOVIRT, before returning to its caller or using any other helpers. | ||
Revision as of 17:12, 21 May 2019
Release the selector allocated previously by calling MFSH_PHYSTOVIRT.
Syntax
int far pascal MFSH_UNPHYSTOVIRT(usSel)unsigned short usSel;
Parameters
- usSel
- contains the selector to released.
Returns
If no error is detected, a zero error code is returned. If an error is detected, the following error code is returned:
- ERROR_PROTECTION_VIOLATION
- the supplied selector is invalid.
Sample
unsigned short usSel; int far pascal MFSH_UNPHYSTOVIRT(usSel)
Remarks
This helper is for use by a mini-FSD with an imbedded device driver. It is the same as the standard device driver UNPHYSTOVIRT helper.
A caller must issue a corresponding UNPHYSTOVIRT after calling PHYSTOVIRT, before returning to its caller or using any other helpers.