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net-snmp: backport signal patch
Fixes compilation with uClibc-ng. Signed-off-by: Rosen Penev <rosenp@gmail.com>lilik-openwrt-22.03
Rosen Penev
4 years ago
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2 changed files with 148 additions and 1 deletions
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+1 -1net/net-snmp/Makefile
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+147 -0net/net-snmp/patches/910-signal.patch
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net/net-snmp/Makefile
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net/net-snmp/patches/910-signal.patch
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| @ -0,0 +1,147 @@ | |||||
| From 1ee70571e0cae37f155f59d4382bc7109138cf09 Mon Sep 17 00:00:00 2001 | |||||
| From: Bart Van Assche <bvanassche@acm.org> | |||||
| Date: Sat, 15 Aug 2020 17:29:25 -0700 | |||||
| Subject: [PATCH] apps/snmpnetstat: Stop using obsolete signal functions | |||||
| This was reported by Rosen Penev. See also | |||||
| https://github.com/net-snmp/net-snmp/pull/162. | |||||
| --- | |||||
| apps/snmpnetstat/if.c | 111 +++++++++++------------------------------- | |||||
| 1 file changed, 28 insertions(+), 83 deletions(-) | |||||
| mode change 100644 => 100755 apps/snmpnetstat/if.c | |||||
| diff --git a/apps/snmpnetstat/if.c b/apps/snmpnetstat/if.c | |||||
| old mode 100644 | |||||
| new mode 100755 | |||||
| index 16768151d..84b87b531 | |||||
| --- a/apps/snmpnetstat/if.c | |||||
| +++ b/apps/snmpnetstat/if.c | |||||
| @@ -64,8 +64,6 @@ | |||||
| #define NO 0 | |||||
| static void sidewaysintpr(u_int); | |||||
| -static void timerSet(int interval_seconds); | |||||
| -static void timerPause(void); | |||||
| struct _if_info { | |||||
| char name[128]; | |||||
| @@ -92,6 +90,34 @@ static void timerPause(void); | |||||
| }; | |||||
| +static struct timeval deadline; | |||||
| + | |||||
| +static void | |||||
| +timerSet(int interval_seconds) | |||||
| +{ | |||||
| + const struct timeval interval = { interval_seconds, 0 }; | |||||
| + | |||||
| + netsnmp_get_monotonic_clock(&deadline); | |||||
| + NETSNMP_TIMERADD(&deadline, &interval, &deadline); | |||||
| +} | |||||
| + | |||||
| +static void | |||||
| +timerPause(void) | |||||
| +{ | |||||
| + struct timeval now, delta; | |||||
| + | |||||
| + netsnmp_get_monotonic_clock(&now); | |||||
| + NETSNMP_TIMERSUB(&deadline, &now, &delta); | |||||
| + if (delta.tv_sec < 0) | |||||
| + return; | |||||
| +#ifdef WIN32 | |||||
| + Sleep(delta.tv_sec * 1000 + delta.tv_usec / 1000); | |||||
| +#else | |||||
| + if (select(0, NULL, NULL, NULL, &delta) < 0) | |||||
| + snmp_perror("select"); | |||||
| +#endif | |||||
| +} | |||||
| + | |||||
| /* | |||||
| * Retrieve the interface addressing information | |||||
| * XXX - This could also be extended to handle non-IP interfaces | |||||
| @@ -845,84 +871,3 @@ sidewaysintpr(unsigned int interval) | |||||
| goto loop; | |||||
| /*NOTREACHED*/ | |||||
| } | |||||
| - | |||||
| - | |||||
| -/* | |||||
| - * timerSet sets or resets the timer to fire in "interval" seconds. | |||||
| - * timerPause waits only if the timer has not fired. | |||||
| - * timing precision is not considered important. | |||||
| - */ | |||||
| - | |||||
| -#if (defined(WIN32) || defined(cygwin)) | |||||
| -static int sav_int; | |||||
| -static time_t timezup; | |||||
| -static void | |||||
| -timerSet(int interval_seconds) | |||||
| -{ | |||||
| - sav_int = interval_seconds; | |||||
| - timezup = time(0) + interval_seconds; | |||||
| -} | |||||
| - | |||||
| -/* | |||||
| - * you can do better than this ! | |||||
| - */ | |||||
| -static void | |||||
| -timerPause(void) | |||||
| -{ | |||||
| - time_t now; | |||||
| - while (time(&now) < timezup) | |||||
| -#ifdef WIN32 | |||||
| - Sleep(400); | |||||
| -#else | |||||
| - { | |||||
| - struct timeval tx; | |||||
| - tx.tv_sec = 0; | |||||
| - tx.tv_usec = 400 * 1000; /* 400 milliseconds */ | |||||
| - select(0, 0, 0, 0, &tx); | |||||
| - } | |||||
| -#endif | |||||
| -} | |||||
| - | |||||
| -#else | |||||
| - | |||||
| -/* | |||||
| - * Called if an interval expires before sidewaysintpr has completed a loop. | |||||
| - * Sets a flag to not wait for the alarm. | |||||
| - */ | |||||
| -RETSIGTYPE | |||||
| -catchalarm(int sig) | |||||
| -{ | |||||
| - signalled = YES; | |||||
| -} | |||||
| - | |||||
| -static void | |||||
| -timerSet(int interval_seconds) | |||||
| -{ | |||||
| -#ifdef HAVE_SIGSET | |||||
| - (void) sigset(SIGALRM, catchalarm); | |||||
| -#else | |||||
| - (void) signal(SIGALRM, catchalarm); | |||||
| -#endif | |||||
| - signalled = NO; | |||||
| - (void) alarm(interval_seconds); | |||||
| -} | |||||
| - | |||||
| -static void | |||||
| -timerPause(void) | |||||
| -{ | |||||
| -#ifdef HAVE_SIGHOLD | |||||
| - sighold(SIGALRM); | |||||
| - if (!signalled) { | |||||
| - sigpause(SIGALRM); | |||||
| - } | |||||
| -#else | |||||
| - int oldmask; | |||||
| - oldmask = sigblock(sigmask(SIGALRM)); | |||||
| - if (!signalled) { | |||||
| - sigpause(0); | |||||
| - } | |||||
| - sigsetmask(oldmask); | |||||
| -#endif | |||||
| -} | |||||
| - | |||||
| -#endif /* !WIN32 && !cygwin */ | |||||