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In Linux 2.6, the 'modify_ldt_ldt_s' structure was renamed 'user_desc'. 

Include definition of 'user_desc' structure.
Minor rewordings.
This commit is contained in:
Michael Kerrisk 2007-06-02 20:55:04 +00:00
parent 1272ab1816
commit 5a16bf48ff
1 changed files with 33 additions and 3 deletions
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36
man2/modify_ldt.2
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@ -54,10 +54,39 @@ is 1,
modifies one ldt entry.
.I ptr
points to a
.I modify_ldt_ldt_s
structure and
.I user_desc
structure
and
.I bytecount
must equal the size of this structure.
.\"
.\" FIXME, say something about func == 2 ans func == 0x11?
.\" In Linux 2.4, func == 2 returned "the default ldt"
.\" In Linux 2.6, func == 2 is a nop, returning a zeroed out structure.
.\" Linux 2.4 and 2.6 implement an operation for func == 0x11
The
.I user_desc
structure is defined in <asm/ldt.h> as:
.in +0.25i
.nf
struct user_desc {
unsigned int entry_number;
unsigned long base_addr;
unsigned int limit;
unsigned int seg_32bit:1;
unsigned int contents:2;
unsigned int read_exec_only:1;
unsigned int limit_in_pages:1;
unsigned int seg_not_present:1;
unsigned int useable:1;
};
.fi
.in
.PP
In Linux 2.4 and earlier, this structure was named
.IR modify_ldt_ldt_s .
.\" .PP
.\" The ldt is specific for the calling process. Any attempts to change
.\" the ldt to include the address space of another process or the kernel
@ -72,7 +101,8 @@ or 0 (for writing).
On failure,
.BR modify_ldt ()
returns \-1 and sets
.IR errno .
.IR errno
to indicate the error.
.SH ERRORS
.TP
.B EFAULT