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Disable direct ioctls to /dev/tty, search only stdin/stdout

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and don't return error, if non-terminals. This fix allows curses
to work into full duplex pipes under control of main program,
like good old curses does.
This commit is contained in:
Andrey A. Chernov 1994-10-03 12:58:05 +00:00
parent 69bf516655
commit 7f3d874be4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=3335
1 changed files with 17 additions and 22 deletions
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39
lib/libcurses/tty.c
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@ -54,7 +54,7 @@ int __tcaction = 1; /* Ignore hardware settings. */
int __tcaction = 0;
#endif
int __tty_fileno;
int __tty_fileno, __noterm = 0;
struct termios __orig_termios, __baset;
static struct termios cbreakt, rawt, *curt;
static int useraw;
@ -66,9 +66,6 @@ static int useraw;
#define OXTABS 0
#endif
#endif
#ifndef _PATH_TTY
#define _PATH_TTY "/dev/tty"
#endif
/*
* gettmode --
@ -79,12 +76,9 @@ gettmode()
{
useraw = 0;
if (tcgetattr(__tty_fileno = STDIN_FILENO, &__orig_termios)) {
if ((__tty_fileno = open(_PATH_TTY, O_RDONLY, 0)) < 0)
return (ERR);
else if (tcgetattr(__tty_fileno, &__orig_termios))
return (ERR);
}
if (tcgetattr(__tty_fileno = STDIN_FILENO, &__orig_termios))
if (tcgetattr(__tty_fileno = STDOUT_FILENO, &__orig_termios))
__noterm = 1;
__baset = __orig_termios;
__baset.c_oflag &= ~OXTABS;
@ -124,8 +118,9 @@ gettmode()
}
curt = &__baset;
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, curt) ? ERR : OK);
return OK;
}
int
@ -133,7 +128,7 @@ raw()
{
useraw = __pfast = __rawmode = 1;
curt = &rawt;
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, curt) ? ERR : OK);
}
@ -142,7 +137,7 @@ noraw()
{
useraw = __pfast = __rawmode = 0;
curt = &__baset;
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, curt) ? ERR : OK);
}
@ -152,7 +147,7 @@ cbreak()
__rawmode = 1;
curt = useraw ? &rawt : &cbreakt;
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, curt) ? ERR : OK);
}
@ -162,7 +157,7 @@ nocbreak()
__rawmode = 0;
curt = useraw ? &rawt : &__baset;
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, curt) ? ERR : OK);
}
@ -174,7 +169,7 @@ echo()
__baset.c_lflag |= ECHO;
__echoit = 1;
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, curt) ? ERR : OK);
}
@ -186,7 +181,7 @@ noecho()
__baset.c_lflag &= ~ECHO;
__echoit = 0;
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, curt) ? ERR : OK);
}
@ -201,7 +196,7 @@ nl()
__baset.c_oflag |= ONLCR;
__pfast = __rawmode;
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, curt) ? ERR : OK);
}
@ -216,7 +211,7 @@ nonl()
__baset.c_oflag &= ~ONLCR;
__pfast = 1;
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, curt) ? ERR : OK);
}
@ -267,7 +262,7 @@ endwin()
(void)fflush(stdout);
(void)setvbuf(stdout, NULL, _IOLBF, 0);
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, &__orig_termios) ? ERR : OK);
}
@ -280,12 +275,12 @@ static struct termios savedtty;
int
savetty()
{
return (tcgetattr(__tty_fileno, &savedtty) ? ERR : OK);
return (!__noterm && tcgetattr(__tty_fileno, &savedtty) ? ERR : OK);
}
int
resetty()
{
return (tcsetattr(__tty_fileno, __tcaction ?
return (!__noterm && tcsetattr(__tty_fileno, __tcaction ?
TCSASOFT | TCSADRAIN : TCSADRAIN, &savedtty) ? ERR : OK);
}