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Don't map LINUX_POSIX_VDISABLE to _POSIX_VDISABLE and vice versa for

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the VMIN and VTIME members of the c_cc array. These members are not
special control characters. By not excluding these members we
changed the noncanonical mode input processing when both members
were 0 on entry (=LINUX_POSIX_VDISABLE) as we would remap them to 255
(=_POSIX_VDISABLE). See termios(4) case A for how that screws up
your terminal I/O.

PR: 23173
Originator: Bjarne Blichfeldt <bbl@dk.damgaard.com>
Patch by: Boris Nikolaus <bn@dali.tellique.de> (original submission)
	  Philipp Mergenthaler <philipp.mergenthaler@stud.uni-karlsruhe.de>
Reminders by: Joseph Holland King <gte743n@cad.gatech.edu>
MFC after: 5 days
This commit is contained in:
Marcel Moolenaar 2003-06-28 19:32:07 +00:00
parent c76b41b7b5
commit 19acf030a2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=116999
1 changed files with 4 additions and 2 deletions
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6
sys/compat/linux/linux_ioctl.c
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@ -346,7 +346,8 @@ bsd_to_linux_termios(struct termios *bios, struct linux_termios *lios)
lios->c_cc[LINUX_VLNEXT] = bios->c_cc[VLNEXT];
for (i=0; i<LINUX_NCCS; i++) {
if (lios->c_cc[i] == _POSIX_VDISABLE)
if (i != LINUX_VMIN && i != LINUX_VTIME &&
lios->c_cc[i] == _POSIX_VDISABLE)
lios->c_cc[i] = LINUX_POSIX_VDISABLE;
}
lios->c_line = 0;
@ -485,7 +486,8 @@ linux_to_bsd_termios(struct linux_termios *lios, struct termios *bios)
bios->c_cc[VLNEXT] = lios->c_cc[LINUX_VLNEXT];
for (i=0; i<NCCS; i++) {
if (bios->c_cc[i] == LINUX_POSIX_VDISABLE)
if (i != VMIN && i != VTIME &&
bios->c_cc[i] == LINUX_POSIX_VDISABLE)
bios->c_cc[i] = _POSIX_VDISABLE;
}