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authorEric Andersen2004-03-23 23:15:36 +0000
committerEric Andersen2004-03-23 23:15:36 +0000
commit97310d025390e96f34140cff13034fcd2b5da18f (patch)
treebe9b3406b9b0598d0bc42d6912a7855f7ee11819 /libbb/get_terminal_width_height.c
parent6bb80870b839cc812d55b28f886bf3e001e4a00e (diff)
downloadbusybox-97310d025390e96f34140cff13034fcd2b5da18f.zip
busybox-97310d025390e96f34140cff13034fcd2b5da18f.tar.gz
Brian Pomerantz writes:
I've noticed a bug in the "autowidth" feature more, and is probably in others. The call to the function get_terminal_width_height() passes in a file descriptor but that file descriptor is never used, instead the ioctl() is called with 0. In more_main() the call to get_terminal_width_height() passes 0 as the file descriptor instead of fileno(cin). This isn't a problem when you more a file (e.g. "more /etc/passwd") but when you pipe a file to it (e.g. "cat /etc/passwd | more") the size of the terminal cannot be determined because file descriptor 0 is not a terminal. The fix is simple, I've attached a patch for more.c and get_terminal_width_height.c. BAPper
Diffstat (limited to 'libbb/get_terminal_width_height.c')
-rw-r--r--libbb/get_terminal_width_height.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libbb/get_terminal_width_height.c b/libbb/get_terminal_width_height.c
index ef90463..7a1af6d 100644
--- a/libbb/get_terminal_width_height.c
+++ b/libbb/get_terminal_width_height.c
@@ -36,7 +36,7 @@ void get_terminal_width_height(int fd, int *width, int *height)
{
struct winsize win = { 0, 0, 0, 0 };
#ifdef CONFIG_FEATURE_AUTOWIDTH
- if (ioctl(0, TIOCGWINSZ, &win) != 0) {
+ if (ioctl(fd, TIOCGWINSZ, &win) != 0) {
win.ws_row = 24;
win.ws_col = 80;
}