diff options
Diffstat (limited to '0010-Improve-daemonizing.patch')
| -rw-r--r-- | 0010-Improve-daemonizing.patch | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/0010-Improve-daemonizing.patch b/0010-Improve-daemonizing.patch new file mode 100644 index 0000000..d2de767 --- /dev/null +++ b/0010-Improve-daemonizing.patch @@ -0,0 +1,209 @@ +From 569e7078244470ac0fcc2af3947c2735338555ec Mon Sep 17 00:00:00 2001 +From: Martin Sehnoutka <msehnout@redhat.com> +Date: Wed, 7 Sep 2016 11:29:29 +0200 +Subject: [PATCH 10/59] Improve daemonizing + +Init script gets correct return code if binding fails. +--- + standalone.c | 38 +++++++++++++++++++++++++++++++++++++- + sysutil.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ + sysutil.h | 7 ++++++- + 3 files changed, 102 insertions(+), 2 deletions(-) + +diff --git a/standalone.c b/standalone.c +index e0f2d5b..3b65ea2 100644 +--- a/standalone.c ++++ b/standalone.c +@@ -26,6 +26,8 @@ static unsigned int s_ipaddr_size; + + static void handle_sigchld(void* duff); + static void handle_sighup(void* duff); ++static void handle_sigusr1(int sig); ++static void handle_sigalrm(int sig); + static void prepare_child(int sockfd); + static unsigned int handle_ip_count(void* p_raw_addr); + static void drop_ip_count(void* p_raw_addr); +@@ -46,11 +48,23 @@ vsf_standalone_main(void) + } + if (tunable_background) + { ++ vsf_sysutil_sigaction(kVSFSysUtilSigALRM, handle_sigalrm); ++ vsf_sysutil_sigaction(kVSFSysUtilSigUSR1, handle_sigusr1); ++ + int forkret = vsf_sysutil_fork(); + if (forkret > 0) + { + /* Parent, just exit */ +- vsf_sysutil_exit(0); ++ vsf_sysutil_set_alarm(3); ++ vsf_sysutil_pause(); ++ ++ vsf_sysutil_exit(1); ++ } ++ else if (forkret == 0) ++ { ++ // Son, restore original signal handler ++ vsf_sysutil_sigaction(kVSFSysUtilSigALRM, 0L); ++ vsf_sysutil_sigaction(kVSFSysUtilSigUSR1, 0L); + } + /* Son, close standard FDs to avoid SSH hang-on-exit */ + vsf_sysutil_reopen_standard_fds(); +@@ -99,6 +113,10 @@ vsf_standalone_main(void) + { + die("could not bind listening IPv4 socket"); + } ++ if (tunable_background) ++ { ++ vsf_sysutil_kill(vsf_sysutil_getppid(), kVSFSysUtilSigUSR1); ++ } + } + else + { +@@ -129,6 +147,10 @@ vsf_standalone_main(void) + { + die("could not bind listening IPv6 socket"); + } ++ if (tunable_background) ++ { ++ vsf_sysutil_kill(vsf_sysutil_getppid(), kVSFSysUtilSigUSR1); ++ } + } + vsf_sysutil_close(0); + vsf_sysutil_close(1); +@@ -268,6 +290,20 @@ handle_sighup(void* duff) + vsf_parseconf_load_file(0, 0); + } + ++static void ++handle_sigalrm(int sig) ++{ ++ (void)sig; // avoid unused parameter error ++ vsf_sysutil_exit(1); ++} ++ ++static void ++handle_sigusr1(int sig) ++{ ++ (void)sig; // avoid unused parameter error ++ vsf_sysutil_exit(0); ++} ++ + static unsigned int + hash_ip(unsigned int buckets, void* p_key) + { +diff --git a/sysutil.c b/sysutil.c +index 428a34a..c848356 100644 +--- a/sysutil.c ++++ b/sysutil.c +@@ -201,6 +201,9 @@ vsf_sysutil_translate_sig(const enum EVSFSysUtilSignal sig) + case kVSFSysUtilSigHUP: + realsig = SIGHUP; + break; ++ case kVSFSysUtilSigUSR1: ++ realsig = SIGUSR1; ++ break; + default: + bug("unknown signal in vsf_sysutil_translate_sig"); + break; +@@ -549,6 +552,12 @@ vsf_sysutil_getpid(void) + return (unsigned int) s_current_pid; + } + ++unsigned int ++vsf_sysutil_getppid(void) ++{ ++ return (unsigned int)getppid(); ++} ++ + int + vsf_sysutil_fork(void) + { +@@ -2871,3 +2880,53 @@ vsf_sysutil_post_fork() + s_sig_details[i].pending = 0; + } + } ++ ++static struct sigaction sigalr, sigusr1; ++ ++void ++vsf_sysutil_sigaction(const enum EVSFSysUtilSignal sig, void (*p_handlefunc)(int)) ++{ ++ int realsig = vsf_sysutil_translate_sig(sig); ++ int retval; ++ struct sigaction sigact, *origsigact=NULL; ++ if (realsig==SIGALRM) ++ { ++ origsigact = &sigalr; ++ } ++ else if (realsig==SIGUSR1) ++ { ++ origsigact = &sigusr1; ++ } ++ vsf_sysutil_memclr(&sigact, sizeof(sigact)); ++ if (p_handlefunc != NULL) ++ { ++ sigact.sa_handler = p_handlefunc; ++ retval = sigfillset(&sigact.sa_mask); ++ if (retval != 0) ++ { ++ die("sigfillset"); ++ } ++ retval = sigaction(realsig, &sigact, origsigact); ++ } ++ else ++ { ++ retval = sigaction(realsig, origsigact, NULL); ++ } ++ if (retval != 0) ++ { ++ die("sigaction"); ++ } ++} ++ ++int ++vsf_sysutil_kill(int pid, int sig) ++{ ++ int realsig = vsf_sysutil_translate_sig(sig); ++ return kill(pid, realsig); ++} ++ ++int ++vsf_sysutil_pause() ++{ ++ return pause(); ++} +diff --git a/sysutil.h b/sysutil.h +index c2ddd15..bfc92cb 100644 +--- a/sysutil.h ++++ b/sysutil.h +@@ -30,7 +30,8 @@ enum EVSFSysUtilSignal + kVSFSysUtilSigCHLD, + kVSFSysUtilSigPIPE, + kVSFSysUtilSigURG, +- kVSFSysUtilSigHUP ++ kVSFSysUtilSigHUP, ++ kVSFSysUtilSigUSR1 + }; + enum EVSFSysUtilInterruptContext + { +@@ -165,6 +166,7 @@ void vsf_sysutil_free(void* p_ptr); + + /* Process creation/exit/process handling */ + unsigned int vsf_sysutil_getpid(void); ++unsigned int vsf_sysutil_getppid(void); + void vsf_sysutil_post_fork(void); + int vsf_sysutil_fork(void); + int vsf_sysutil_fork_failok(void); +@@ -182,6 +184,9 @@ int vsf_sysutil_wait_exited_normally( + const struct vsf_sysutil_wait_retval* p_waitret); + int vsf_sysutil_wait_get_exitcode( + const struct vsf_sysutil_wait_retval* p_waitret); ++void vsf_sysutil_sigaction(const enum EVSFSysUtilSignal sig, void (*p_handlefunc)(int)); ++int vsf_sysutil_kill(int pid, int sig); ++int vsf_sysutil_pause(); + + /* Various string functions */ + unsigned int vsf_sysutil_strlen(const char* p_text); +-- +2.14.4 + |