On 04/23/2017 01:52 PM, Dmitry V. Levin wrote: > On Fri, Apr 21, 2017 at 10:05:09PM +0200, Christian Brauner wrote: >> Signed-off-by: Christian Brauner <christian.brauner@xxxxxxxxxx> >> --- >> man3/ttyname.3 | 18 +++++++++++++++++- >> 1 file changed, 17 insertions(+), 1 deletion(-) >> >> diff --git a/man3/ttyname.3 b/man3/ttyname.3 >> index 0be50c62a..f184b4505 100644 >> --- a/man3/ttyname.3 >> +++ b/man3/ttyname.3 >> @@ -75,7 +75,7 @@ was too small to allow storing the pathname. >> .\" glibc commit 15e9a4f378c8607c2ae1aa465436af4321db0e23 >> .B ENODEV >> File descriptor refers to a slave pseudoterminal device >> -but the corresponding pathname could not be found. >> +but the corresponding pathname could not be found (see NOTES). >> .SH ATTRIBUTES >> For an explanation of the terms used in this section, see >> .BR attributes (7). >> @@ -93,6 +93,22 @@ T} Thread safety MT-Safe >> .TE >> .SH CONFORMING TO >> POSIX.1-2001, POSIX.1-2008, 4.2BSD. >> +.SH NOTES >> +Processes keeping a file descriptor to a >> +.BR pts (4) >> +device open when switching to >> +.BR mount_namespaces (7) >> +that use a different >> +.IR /dev/ptmx >> +instance may still accidently find that a device path of the same name >> +for that file descriptor exists. However, this device path refers to a >> +different device and thus cannot not be used to modify the device that > > s/to modify the device/to access the device/ Thanks, Dmitry. Fixed! Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
