Author: kevans
Date: Thu Aug 9 02:55:48 2018
New Revision: 337523
URL: https://svnweb.freebsd.org/changeset/base/337523
Log:
libsa: exit on EOF in ngets
It was possible in some rare circumstances for ngets to behave terribly with
bhyveload and some form of redirecting user input over a pipe.
PR: 198706
Submitted by: Ivan Krivonos <int0ds...@gmail.com>
MFC after: 1 week
Modified:
head/stand/libsa/gets.c
Modified: head/stand/libsa/gets.c
==============================================================================
--- head/stand/libsa/gets.c Thu Aug 9 02:47:22 2018 (r337522)
+++ head/stand/libsa/gets.c Thu Aug 9 02:55:48 2018 (r337523)
@@ -44,8 +44,11 @@ ngets(char *buf, int n)
int c;
char *lp;
- for (lp = buf;;)
- switch (c = getchar() & 0177) {
+ for (lp = buf;;) {
+ c = getchar();
+ if (c == -1)
+ break;
+ switch (c & 0177) {
case '\n':
case '\r':
*lp = '\0';
@@ -79,6 +82,7 @@ ngets(char *buf, int n)
putchar(c);
}
}
+ }
/*NOTREACHED*/
}
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