On 16/10/2018 16:37, Olivier Gayot wrote: > Added a few lines about POSIX_SPAWN_USEVFORK so that it appears clearly > that since glibc 2.24, the flag has no effect. > > Signed-off-by: Olivier Gayot <olivier.gayot@xxxxxxxxxxx> LGTM. > --- > man3/posix_spawn.3 | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/man3/posix_spawn.3 b/man3/posix_spawn.3 > index e8c0de172..8badb43bf 100644 > --- a/man3/posix_spawn.3 > +++ b/man3/posix_spawn.3 > @@ -382,6 +382,18 @@ the child's process group ID is made the same as its process ID. > If the > .B POSIX_SPAWN_SETPGROUP > flag is not set, the child inherits the parent's process group ID. > +.TP > +.B POSIX_SPAWN_USEVFORK > +Since glibc 2.24, this flag has no effect. > +On older implementations, setting this flag forces the > +.BR fork() > +step to use > +.BR vfork (2) > +instead of > +.BR fork (2). > +The > +.B _GNU_SOURCE > +feature test macro must be defined to obtain the definition of this contant. > .PP > If > .I attrp >
