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Code Issues Releases Activity

mdoc(7) police: "The .Fn system call".

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This commit is contained in:
Ruslan Ermilov 2002-12-18 12:39:25 +00:00
parent 894fd2da78
commit a0ce78ec1d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=108035
3 changed files with 18 additions and 0 deletions
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6
lib/libc/i386/sys/i386_get_ioperm.2
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@ -40,7 +40,9 @@
.Ft int .Ft int
.Fn i386_set_ioperm "unsigned int start" "unsigned int length" "int enable" .Fn i386_set_ioperm "unsigned int start" "unsigned int length" "int enable"
.Sh DESCRIPTION .Sh DESCRIPTION
The
.Fn i386_get_ioperm .Fn i386_get_ioperm
system call
will return the permission for the process' I/O port space in the will return the permission for the process' I/O port space in the
.Fa *enable .Fa *enable
argument. The port range starts at argument. The port range starts at
@ -48,7 +50,9 @@ argument. The port range starts at
and the number of contiguous entries will be returned in and the number of contiguous entries will be returned in
.Fa *length . .Fa *length .
.Pp .Pp
The
.Fn i386_set_ioperm .Fn i386_set_ioperm
system call
will set access to a range of I/O ports described by the will set access to a range of I/O ports described by the
.Fa start .Fa start
and and
@ -59,9 +63,11 @@ argument.
.Sh RETURN VALUES .Sh RETURN VALUES
.Rv -std .Rv -std
.Sh ERRORS .Sh ERRORS
The
.Fn i386_get_ioperm .Fn i386_get_ioperm
and and
.Fn i386_set_ioperm .Fn i386_set_ioperm
system calls
will fail if: will fail if:
.Bl -tag -width Er .Bl -tag -width Er
.It Bq Er EINVAL .It Bq Er EINVAL

8
lib/libc/i386/sys/i386_get_ldt.2
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@ -49,10 +49,14 @@
.Ft int .Ft int
.Fn i386_set_ldt "int start_sel" "union descriptor *descs" "int num_sels" .Fn i386_set_ldt "int start_sel" "union descriptor *descs" "int num_sels"
.Sh DESCRIPTION .Sh DESCRIPTION
The
.Fn i386_get_ldt .Fn i386_get_ldt
system call
will return the list of i386 descriptors that the process has in its will return the list of i386 descriptors that the process has in its
LDT. LDT.
The
.Fn i386_set_ldt .Fn i386_set_ldt
system call
will set a list of i386 descriptors for the current process in its will set a list of i386 descriptors for the current process in its
LDT. LDT.
Both routines accept a starting selector number Both routines accept a starting selector number
@ -77,16 +81,20 @@ in your kernel configuration file to use these functions.
Upon successful completion, Upon successful completion,
.Fn i386_get_ldt .Fn i386_get_ldt
returns the number of descriptors currently in the LDT. returns the number of descriptors currently in the LDT.
The
.Fn i386_set_ldt .Fn i386_set_ldt
system call
returns the first selector set. returns the first selector set.
Otherwise, a value of -1 is returned and the global Otherwise, a value of -1 is returned and the global
variable variable
.Va errno .Va errno
is set to indicate the error. is set to indicate the error.
.Sh ERRORS .Sh ERRORS
The
.Fn i386_get_ldt .Fn i386_get_ldt
and and
.Fn i386_set_ldt .Fn i386_set_ldt
system calls
will fail if: will fail if:
.Bl -tag -width Er .Bl -tag -width Er
.It Bq Er EINVAL .It Bq Er EINVAL

4
lib/libc/i386/sys/i386_vm86.2
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@ -39,7 +39,9 @@
.Ft int .Ft int
.Fn i386_vm86 "int function" "void *data" .Fn i386_vm86 "int function" "void *data"
.Sh DESCRIPTION .Sh DESCRIPTION
The
.Fn i386_vm86 .Fn i386_vm86
system call
is used to call various vm86 related functions. is used to call various vm86 related functions.
.Fa function .Fa function
can be one of the following values: can be one of the following values:
@ -80,7 +82,9 @@ bit set. Control returns to the process upon delivery of a signal.
.Sh RETURN VALUES .Sh RETURN VALUES
.Rv -std i386_vm86 .Rv -std i386_vm86
.Sh ERRORS .Sh ERRORS
The
.Fn i386_vm86 .Fn i386_vm86
system call
will fail if: will fail if:
.Bl -tag -width Er .Bl -tag -width Er
.It Bq Er EINVAL .It Bq Er EINVAL