|
 |
07a51b |
From 5723280683d940b33647b8dc92a3aa3b1a9a5466 Mon Sep 17 00:00:00 2001
|
|
|
07a51b |
From: Andrea Claudi <aclaudi@redhat.com>
|
|
|
07a51b |
Date: Thu, 30 Apr 2020 12:20:17 +0200
|
|
|
07a51b |
Subject: [PATCH] nstat: print useful error messages in abort() cases
|
|
|
07a51b |
MIME-Version: 1.0
|
|
|
07a51b |
Content-Type: text/plain; charset=UTF-8
|
|
|
07a51b |
Content-Transfer-Encoding: 8bit
|
|
|
07a51b |
|
|
|
07a51b |
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1824896
|
|
|
07a51b |
Upstream Status: iproute2.git commit 2c7056ac26412
|
|
|
07a51b |
|
|
|
07a51b |
commit 2c7056ac26412fe99443a283f0c1261cb81ccea2
|
|
|
07a51b |
Author: Andrea Claudi <aclaudi@redhat.com>
|
|
|
07a51b |
Date: Mon Feb 17 14:46:18 2020 +0100
|
|
|
07a51b |
|
|
|
07a51b |
nstat: print useful error messages in abort() cases
|
|
|
07a51b |
|
|
|
07a51b |
When nstat temporary file is corrupted or in some other corner cases,
|
|
|
07a51b |
nstat use abort() to stop its execution. This can puzzle some users,
|
|
|
07a51b |
wondering what is the reason for the crash.
|
|
|
07a51b |
|
|
|
07a51b |
This commit replaces abort() with some meaningful error messages and exit()
|
|
|
07a51b |
|
|
|
07a51b |
Reported-by: Renaud Métrich <rmetrich@redhat.com>
|
|
|
07a51b |
Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
|
|
|
07a51b |
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
|
|
|
07a51b |
---
|
|
|
07a51b |
misc/nstat.c | 47 +++++++++++++++++++++++++++++++++--------------
|
|
|
07a51b |
1 file changed, 33 insertions(+), 14 deletions(-)
|
|
|
07a51b |
|
|
|
07a51b |
diff --git a/misc/nstat.c b/misc/nstat.c
|
|
|
07a51b |
index 23113b223b22d..425e75ef461ec 100644
|
|
|
07a51b |
--- a/misc/nstat.c
|
|
|
07a51b |
+++ b/misc/nstat.c
|
|
|
07a51b |
@@ -142,14 +142,19 @@ static void load_good_table(FILE *fp)
|
|
|
07a51b |
}
|
|
|
07a51b |
/* idbuf is as big as buf, so this is safe */
|
|
|
07a51b |
nr = sscanf(buf, "%s%llu%lg", idbuf, &val, &rate;;
|
|
|
07a51b |
- if (nr < 2)
|
|
|
07a51b |
- abort();
|
|
|
07a51b |
+ if (nr < 2) {
|
|
|
07a51b |
+ fprintf(stderr, "%s:%d: error parsing history file\n",
|
|
|
07a51b |
+ __FILE__, __LINE__);
|
|
|
07a51b |
+ exit(-2);
|
|
|
07a51b |
+ }
|
|
|
07a51b |
if (nr < 3)
|
|
|
07a51b |
rate = 0;
|
|
|
07a51b |
if (useless_number(idbuf))
|
|
|
07a51b |
continue;
|
|
|
07a51b |
- if ((n = malloc(sizeof(*n))) == NULL)
|
|
|
07a51b |
- abort();
|
|
|
07a51b |
+ if ((n = malloc(sizeof(*n))) == NULL) {
|
|
|
07a51b |
+ perror("nstat: malloc");
|
|
|
07a51b |
+ exit(-1);
|
|
|
07a51b |
+ }
|
|
|
07a51b |
n->id = strdup(idbuf);
|
|
|
07a51b |
n->val = val;
|
|
|
07a51b |
n->rate = rate;
|
|
|
07a51b |
@@ -190,8 +195,11 @@ static void load_ugly_table(FILE *fp)
|
|
|
07a51b |
int count1, count2, skip = 0;
|
|
|
07a51b |
|
|
|
07a51b |
p = strchr(buf, ':');
|
|
|
07a51b |
- if (!p)
|
|
|
07a51b |
- abort();
|
|
|
07a51b |
+ if (!p) {
|
|
|
07a51b |
+ fprintf(stderr, "%s:%d: error parsing history file\n",
|
|
|
07a51b |
+ __FILE__, __LINE__);
|
|
|
07a51b |
+ exit(-2);
|
|
|
07a51b |
+ }
|
|
|
07a51b |
count1 = count_spaces(buf);
|
|
|
07a51b |
*p = 0;
|
|
|
07a51b |
idbuf[0] = 0;
|
|
|
07a51b |
@@ -211,8 +219,10 @@ static void load_ugly_table(FILE *fp)
|
|
|
07a51b |
strncat(idbuf, p, sizeof(idbuf) - off - 1);
|
|
|
07a51b |
}
|
|
|
07a51b |
n = malloc(sizeof(*n));
|
|
|
07a51b |
- if (!n)
|
|
|
07a51b |
- abort();
|
|
|
07a51b |
+ if (!n) {
|
|
|
07a51b |
+ perror("nstat: malloc");
|
|
|
07a51b |
+ exit(-1);
|
|
|
07a51b |
+ }
|
|
|
07a51b |
n->id = strdup(idbuf);
|
|
|
07a51b |
n->rate = 0;
|
|
|
07a51b |
n->next = db;
|
|
|
07a51b |
@@ -221,18 +231,27 @@ static void load_ugly_table(FILE *fp)
|
|
|
07a51b |
}
|
|
|
07a51b |
n = db;
|
|
|
07a51b |
nread = getline(&buf, &buflen, fp);
|
|
|
07a51b |
- if (nread == -1)
|
|
|
07a51b |
- abort();
|
|
|
07a51b |
+ if (nread == -1) {
|
|
|
07a51b |
+ fprintf(stderr, "%s:%d: error parsing history file\n",
|
|
|
07a51b |
+ __FILE__, __LINE__);
|
|
|
07a51b |
+ exit(-2);
|
|
|
07a51b |
+ }
|
|
|
07a51b |
count2 = count_spaces(buf);
|
|
|
07a51b |
if (count2 > count1)
|
|
|
07a51b |
skip = count2 - count1;
|
|
|
07a51b |
do {
|
|
|
07a51b |
p = strrchr(buf, ' ');
|
|
|
07a51b |
- if (!p)
|
|
|
07a51b |
- abort();
|
|
|
07a51b |
+ if (!p) {
|
|
|
07a51b |
+ fprintf(stderr, "%s:%d: error parsing history file\n",
|
|
|
07a51b |
+ __FILE__, __LINE__);
|
|
|
07a51b |
+ exit(-2);
|
|
|
07a51b |
+ }
|
|
|
07a51b |
*p = 0;
|
|
|
07a51b |
- if (sscanf(p+1, "%llu", &n->val) != 1)
|
|
|
07a51b |
- abort();
|
|
|
07a51b |
+ if (sscanf(p+1, "%llu", &n->val) != 1) {
|
|
|
07a51b |
+ fprintf(stderr, "%s:%d: error parsing history file\n",
|
|
|
07a51b |
+ __FILE__, __LINE__);
|
|
|
07a51b |
+ exit(-2);
|
|
|
07a51b |
+ }
|
|
|
07a51b |
/* Trick to skip "dummy" trailing ICMP MIB in 2.4 */
|
|
|
07a51b |
if (skip)
|
|
|
07a51b |
skip--;
|
|
|
07a51b |
--
|
|
|
07a51b |
2.25.4
|
|
|
07a51b |
|