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added -T keepstderr to keep stderr open when daemonizing [RT #43736]

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(cherry picked from commit c9ee977f31)
This commit is contained in:
Mark Andrews 2016-12-05 10:38:16 +11:00
parent 150ff959d1
commit 88ec925cfc
3 changed files with 6 additions and 1 deletions
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1
bin/named/include/named/globals.h
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@ -164,6 +164,7 @@ EXTERN isc_boolean_t ns_g_dropedns INIT(ISC_FALSE);
EXTERN isc_boolean_t ns_g_noedns INIT(ISC_FALSE);
EXTERN isc_boolean_t ns_g_nosoa INIT(ISC_FALSE);
EXTERN isc_boolean_t ns_g_noaa INIT(ISC_FALSE);
EXTERN isc_boolean_t ns_g_keepstderr INIT(ISC_FALSE);
EXTERN unsigned int ns_g_delay INIT(0);
EXTERN isc_boolean_t ns_g_nonearest INIT(ISC_FALSE);
EXTERN isc_boolean_t ns_g_notcp INIT(ISC_FALSE);

3
bin/named/main.c
View file

@ -616,6 +616,9 @@ parse_command_line(int argc, char *argv[]) {
else if (!strncmp(isc_commandline_argument, "tat=", 4))
ns_g_tat_interval =
atoi(isc_commandline_argument + 4);
else if (!strcmp(isc_commandline_argument,
"keepstderr"))
ns_g_keepstderr = ISC_TRUE;
else
fprintf(stderr, "unknown -T flag '%s\n",
isc_commandline_argument);

3
bin/named/unix/os.c
View file

@ -48,6 +48,7 @@
#include <isc/strerror.h>
#include <isc/string.h>
#include <named/globals.h>
#include <named/main.h>
#include <named/os.h>
#ifdef HAVE_LIBSCF
@ -460,7 +461,7 @@ ns_os_daemonize(void) {
(void)close(STDOUT_FILENO);
(void)dup2(devnullfd, STDOUT_FILENO);
}
if (devnullfd != STDERR_FILENO) {
if (devnullfd != STDERR_FILENO && !ns_g_keepstderr) {
(void)close(STDERR_FILENO);
(void)dup2(devnullfd, STDERR_FILENO);
}