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Don't pass -1 as the length to write() if read() fails

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Kevin Easton
2017-11-17 23:06:46 +11:00
parent 149b3206e0
commit 0abfa67aa8
1 changed files with 4 additions and 2 deletions
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6
source/scr-bx.c
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@@ -505,12 +505,14 @@ void reattach_tty(char *tty, char *password)
if (FD_ISSET(0, &rd_fd)) if (FD_ISSET(0, &rd_fd))
{ {
len = read(0, buffer, sizeof(buffer)-1); len = read(0, buffer, sizeof(buffer)-1);
write(s, buffer, len); if (len > 0)
write(s, buffer, len);
} }
if (FD_ISSET(s, &rd_fd)) if (FD_ISSET(s, &rd_fd))
{ {
len = read(s, buffer, sizeof(buffer)-1); len = read(s, buffer, sizeof(buffer)-1);
write(1, buffer, len); if (len > 0)
write(1, buffer, len);
} }
} }
} }