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Fix infamous "TIOCGWINSZ: Interrupted system call" on return from a ^Z

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Fixes PR#513
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Submitted by:
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Peter Wemm 1995-08-07 16:44:28 +00:00
parent 5ac0875800
commit 8e53a8e6fc
1 changed files with 4 additions and 2 deletions
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6
usr.bin/vi/sex/sex_window.c
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@ -48,6 +48,7 @@ static char sccsid[] = "@(#)sex_window.c 8.8 (Berkeley) 8/17/94";
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include <errno.h>
#include "compat.h"
#include <curses.h>
@ -79,7 +80,7 @@ sex_window(sp, sigwinch)
*
* Try TIOCGWINSZ.
*/
row = col = 0;
errno = row = col = 0;
#ifdef TIOCGWINSZ
if (ioctl(STDERR_FILENO, TIOCGWINSZ, &win) != -1) {
row = win.ws_row;
@ -89,7 +90,8 @@ sex_window(sp, sigwinch)
/* If here because of a signal, TIOCGWINSZ is all we trust. */
if (sigwinch) {
if (row == 0 || col == 0) {
msgq(sp, M_SYSERR, "TIOCGWINSZ");
if (errno > 0)
msgq(sp, M_SYSERR, "TIOCGWINSZ");
return (1);
}