view doc/posix-functions/popen.texi @ 13776:2285cf35fa15

docs: update cygwin progress * doc/glibc-functions/mkostemp.texi (mkostemp): Added in cygwin 1.7.6. * doc/glibc-functions/mkostemps.texi (mkostemps): Likewise. * doc/posix-headers/fenv.texi (fenv.h): Added after cygwin 1.7.7. * doc/posix-functions/feclearexcept.texi (feclearexcept): Likewise. * doc/posix-functions/fegetenv.texi (fegetenv): Likewise. * doc/posix-functions/fegetexceptflag.texi (fegetexceptflag): Likewise. * doc/posix-functions/fegetround.texi (fegetround): Likewise. * doc/posix-functions/feholdexcept.texi (feholdexcept): Likewise. * doc/posix-functions/feraiseexcept.texi (feraiseexcept): Likewise. * doc/posix-functions/fesetenv.texi (fesetenv): Likewise. * doc/posix-functions/fesetexceptflag.texi (fesetexceptflag): Likewise. * doc/posix-functions/fesetround.texi (fesetround): Likewise. * doc/posix-functions/fetestexcept.texi (fetestexcept): Likewise. * doc/posix-functions/feupdateenv.texi (feupdateenv): Likewise. * doc/glibc-functions/feenableexcept.texi (feenableexcept): Likewise. * doc/glibc-functions/fedisableexcept.texi (fedisableexcept): Likewise. * doc/glibc-functions/fegetexcept.texi (fegetexcept): Likewise. Signed-off-by: Eric Blake <eblake@redhat.com>
author Eric Blake <eblake@redhat.com>
date Thu, 07 Oct 2010 08:42:24 -0600
parents bb0ceefd22dc
children 6355dc4626b5
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@node popen
@section @code{popen}
@findex popen

POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/popen.html}

Gnulib module: popen

Portability problems fixed by Gnulib:
@itemize
@item
Some platforms start the child with closed stdin or stdout if the
standard descriptors were closed in the parent:
Cygwin 1.5.x.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
Some platforms mistakenly set the close-on-exec bit, then if it is
cleared by the application, the platform then leaks file descriptors
from earlier @code{popen} calls into subsequent @code{popen} children:
Cygwin 1.5.x.
@end itemize