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From 333f0a462446edf67253a38ee1c194a4a44b411a Mon Sep 17 00:00:00 2001
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From: Jakub Filak <jfilak@redhat.com>
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Date: Mon, 30 Mar 2015 15:30:32 +0200
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Subject: [PATCH] lib: don't expect kernel's version '2.6.*' or '3.*.*'
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The function parsing kernel's version was expecting one of the strings
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mentioned in Summary. Unfortunately, none of them appears in oopses for
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kernel-4.*.*
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I am not sure why the previous version didn't search for 'kernel-'
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string, but I hope the previous authors know the reason. I can only
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guess that 'kernel-' string is not always present, so I must not use it
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in this commit. Hence, this commit switches to search by a regular
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expression where I want to match a version string "\d.\d.\d" with
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expectation of a release string in form of "-[^ )]+".
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Resolves #1378469
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Signed-off-by: Jakub Filak <jfilak@redhat.com>
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---
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src/lib/kernel.c | 44 ++++++++++++++++++++++++++++++++++----------
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1 file changed, 34 insertions(+), 10 deletions(-)
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diff --git a/src/lib/kernel.c b/src/lib/kernel.c
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index 799463d..4e27d05 100644
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--- a/src/lib/kernel.c
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+++ b/src/lib/kernel.c
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@@ -19,6 +19,8 @@
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#include <satyr/stacktrace.h>
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#include <satyr/thread.h>
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+#include <regex.h>
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+
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#define _GNU_SOURCE 1 /* for strcasestr */
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#include "libabrt.h"
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@@ -532,19 +534,41 @@ char *koops_extract_version(const char *linepointer)
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|| strstr(linepointer, "REGS")
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|| strstr(linepointer, "EFLAGS")
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) {
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- char* start;
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- char* end;
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+ const char *regexp = "([0-9]+\\.[0-9]+\\.[0-9]+-[^ \\)]+)[ \\)]";
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+ regex_t re;
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+ int r = regcomp(&re, regexp, REG_EXTENDED);
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+ if (r != 0)
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+ {
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+ char buf[LINE_MAX];
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+ regerror(r, &re, buf, sizeof(buf));
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+ error_msg("BUG: invalid kernel version regexp: %s", buf);
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+ return NULL;
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+ }
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- start = strstr(linepointer, "2.6.");
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- if (!start)
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- start = strstr(linepointer, "3.");
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- if (start)
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+ regmatch_t matchptr[2];
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+ r = regexec(&re, linepointer, 2, matchptr, 0);
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+ if (r != 0)
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{
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- end = strchr(start, ')');
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- if (!end)
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- end = strchrnul(start, ' ');
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- return xstrndup(start, end-start);
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+ if (r != REG_NOMATCH)
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+ {
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+ char buf[LINE_MAX];
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+ regerror(r, &re, buf, sizeof(buf));
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+ error_msg("BUG: kernel version regexp failed: %s", buf);
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+ }
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+ else
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+ {
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+ log_debug("A kernel version candidate line didn't match kernel oops regexp:");
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+ log_debug("\t'%s'", linepointer);
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+ }
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+
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+ regfree(&re);
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+ return NULL;
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}
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+
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+ char *ret = xstrndup(linepointer + matchptr[1].rm_so, matchptr[1].rm_eo - matchptr[1].rm_so);
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+
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+ regfree(&re);
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+ return ret;
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}
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return NULL;
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--
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1.8.3.1
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