(split) LDP man-pages の original/ を v3.29 に更新。

[linuxjm/LDP_man-pages.git] / original / man2 / vfork.2

diff --git a/original/man2/vfork.2 b/original/man2/vfork.2
index ef86812..2209cfd 100644 (file)
--- a/original/man2/vfork.2
+++ b/original/man2/vfork.2
@@ -23,7 +23,7 @@
 .\" 1999-11-10: Merged text taken from the page contributed by
 .\" Reed H. Petty (rhp@draper.net)
 .\"
-.TH VFORK 2 2009-06-21 "Linux" "Linux Programmer's Manual"
+.TH VFORK 2 2010-09-20 "Linux" "Linux Programmer's Manual"
 .SH NAME
 vfork \- create a child process and block parent
 .SH SYNOPSIS
@@ -39,7 +39,24 @@ Feature Test Macro Requirements for glibc (see
 .in
 .sp
 .BR vfork ():
-_BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500
+.ad l
+.RS 4
+.PD 0
+.TP 4
+Since glibc 2.12:
+.nf
+_BSD_SOURCE ||
+    (_XOPEN_SOURCE\ >=\ 500 ||
+        _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED) &&
+    !(_POSIX_C_SOURCE\ >=\ 200809L || _XOPEN_SOURCE\ >=\ 700)
+.TP 4
+.fi
+Before glibc 2.12:
+_BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500 ||
+_XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_EXTENDED
+.PD
+.RE
+.ad b
 .SH DESCRIPTION
 .SS "Standard Description"
 (From POSIX.1)
@@ -74,7 +91,7 @@ is a special case of
 It is used to create new processes without copying the page tables of
 the parent process.
 It may be useful in performance-sensitive applications
-where a child will be created which then immediately issues an
+where a child is created which then immediately issues an
 .BR execve (2).
 .PP
 .BR vfork ()
@@ -110,7 +127,7 @@ and to create a unique task structure for the child.
 However, in the bad old days a
 .BR fork (2)
 would require making a complete copy of the caller's data space,
-often needlessly, since usually immediately afterwards an
+often needlessly, since usually immediately afterward an
 .BR exec (3)
 is done.
 Thus, for greater efficiency, BSD introduced the
@@ -125,7 +142,7 @@ child was using its resources.
 The use of
 .BR vfork ()
 was tricky: for example, not modifying data
-in the parent process depended on knowing which variables are
+in the parent process depended on knowing which variables were
 held in a register.
 .SH "CONFORMING TO"
 4.3BSD, POSIX.1-2001.