Module Name: src
Committed By: christos
Date: Sun Jan 14 17:37:32 UTC 2024
Modified Files:
src/usr.bin/tail: forward.c
Log Message:
PR/57850: Ricardo Branco: tail does not work in some pseudo-filesystems
>From FreeBSD: https://github.com/NetBSD/src/pull/20
To generate a diff of this commit:
cvs rdiff -u -r1.33 -r1.34 src/usr.bin/tail/forward.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/usr.bin/tail/forward.c
diff -u src/usr.bin/tail/forward.c:1.33 src/usr.bin/tail/forward.c:1.34
--- src/usr.bin/tail/forward.c:1.33 Fri Oct 9 13:51:26 2015
+++ src/usr.bin/tail/forward.c Sun Jan 14 12:37:32 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: forward.c,v 1.33 2015/10/09 17:51:26 christos Exp $ */
+/* $NetBSD: forward.c,v 1.34 2024/01/14 17:37:32 christos Exp $ */
/*-
* Copyright (c) 1991, 1993
@@ -37,7 +37,7 @@
#if 0
static char sccsid[] = "@(#)forward.c 8.1 (Berkeley) 6/6/93";
#endif
-__RCSID("$NetBSD: forward.c,v 1.33 2015/10/09 17:51:26 christos Exp $");
+__RCSID("$NetBSD: forward.c,v 1.34 2024/01/14 17:37:32 christos Exp $");
#endif /* not lint */
#include <sys/types.h>
@@ -96,7 +96,7 @@ forward(FILE *fp, enum STYLE style, off_
case FBYTES:
if (off == 0)
break;
- if (S_ISREG(sbp->st_mode)) {
+ if (S_ISREG(sbp->st_mode) && sbp->st_size > 0) {
if (sbp->st_size < off)
off = sbp->st_size;
if (fseeko(fp, off, SEEK_SET) == -1) {
@@ -128,7 +128,7 @@ forward(FILE *fp, enum STYLE style, off_
}
break;
case RBYTES:
- if (S_ISREG(sbp->st_mode)) {
+ if (S_ISREG(sbp->st_mode) && sbp->st_size > 0) {
if (sbp->st_size >= off &&
fseeko(fp, -off, SEEK_END) == -1) {
ierr();
@@ -146,7 +146,7 @@ forward(FILE *fp, enum STYLE style, off_
}
break;
case RLINES:
- if (S_ISREG(sbp->st_mode)) {
+ if (S_ISREG(sbp->st_mode) && sbp->st_size > 0) {
if (!off) {
if (fseek(fp, 0L, SEEK_END) == -1) {
ierr();
