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Merge pull request #17928 from keszybz/nss-logging

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Enable logging in nss modules
This commit is contained in:
Yu Watanabe 2020-12-14 09:48:23 +09:00 committed by GitHub
commit ba9385d91f
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 88 additions and 27 deletions
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7
src/basic/static-destruct.h
View File

@ -30,15 +30,16 @@ typedef struct StaticDestructor {
_alignptr_ \
/* Make sure this is not dropped from the image because not explicitly referenced */ \
_used_ \
/* Make sure that AddressSanitizer doesn't pad this variable: we want everything in this section packed next to each other so that we can enumerate it. */ \
/* Make sure that AddressSanitizer doesn't pad this variable: we want everything in this section
* packed next to each other so that we can enumerate it. */ \
_variable_no_sanitize_address_ \
static const StaticDestructor UNIQ_T(static_destructor_entry, uq) = { \
.data = &(variable), \
.destroy = UNIQ_T(static_destructor_wrapper, uq), \
}
/* Beginning and end of our section listing the destructors. We define these as weak as we want this to work even if
* there's not a single destructor is defined in which case the section will be missing. */
/* Beginning and end of our section listing the destructors. We define these as weak as we want this to work
* even if no destructors are defined and the section is missing. */
extern const struct StaticDestructor _weak_ __start_SYSTEMD_STATIC_DESTRUCT[];
extern const struct StaticDestructor _weak_ __stop_SYSTEMD_STATIC_DESTRUCT[];

20
src/nss-mymachines/nss-mymachines.c
View File

@ -2,6 +2,7 @@
#include <netdb.h>
#include <nss.h>
#include <pthread.h>
#include "sd-bus.h"
#include "sd-login.h"
@ -14,12 +15,27 @@
#include "format-util.h"
#include "hostname-util.h"
#include "in-addr-util.h"
#include "log.h"
#include "macro.h"
#include "memory-util.h"
#include "nss-util.h"
#include "signal-util.h"
#include "string-util.h"
static void setup_logging(void) {
/* We need a dummy function because log_parse_environment is a macro. */
log_parse_environment();
}
static void setup_logging_once(void) {
static pthread_once_t once = PTHREAD_ONCE_INIT;
assert_se(pthread_once(&once, setup_logging) == 0);
}
#define NSS_ENTRYPOINT_BEGIN \
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK); \
setup_logging_once()
NSS_GETHOSTBYNAME_PROTOTYPES(mymachines);
NSS_GETPW_PROTOTYPES(mymachines);
NSS_GETGR_PROTOTYPES(mymachines);
@ -94,7 +110,7 @@ enum nss_status _nss_mymachines_gethostbyname4_r(
int n_ifindices, r;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(name);
assert(pat);
@ -244,7 +260,7 @@ enum nss_status _nss_mymachines_gethostbyname3_r(
int r;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(name);
assert(result);

43
src/nss-resolve/nss-resolve.c
View File

@ -3,6 +3,7 @@
#include <errno.h>
#include <netdb.h>
#include <nss.h>
#include <pthread.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
@ -17,6 +18,24 @@
#include "strv.h"
#include "varlink.h"
static JsonDispatchFlags json_dispatch_flags = 0;
static void setup_logging(void) {
log_parse_environment();
if (DEBUG_LOGGING)
json_dispatch_flags = JSON_LOG;
}
static void setup_logging_once(void) {
static pthread_once_t once = PTHREAD_ONCE_INIT;
assert_se(pthread_once(&once, setup_logging) == 0);
}
#define NSS_ENTRYPOINT_BEGIN \
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK); \
setup_logging_once()
NSS_GETHOSTBYNAME_PROTOTYPES(resolve);
NSS_GETHOSTBYADDR_PROTOTYPES(resolve);
@ -183,7 +202,7 @@ enum nss_status _nss_resolve_gethostbyname4_r(
int r;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(name);
assert(pat);
@ -214,7 +233,7 @@ enum nss_status _nss_resolve_gethostbyname4_r(
goto fail;
}
r = json_dispatch(rparams, resolve_hostname_reply_dispatch_table, NULL, 0, &p);
r = json_dispatch(rparams, resolve_hostname_reply_dispatch_table, NULL, json_dispatch_flags, &p);
if (r < 0)
goto fail;
if (json_variant_is_blank_object(p.addresses))
@ -223,7 +242,7 @@ enum nss_status _nss_resolve_gethostbyname4_r(
JSON_VARIANT_ARRAY_FOREACH(entry, p.addresses) {
AddressParameters q = {};
r = json_dispatch(entry, address_parameters_dispatch_table, NULL, 0, &q);
r = json_dispatch(entry, address_parameters_dispatch_table, NULL, json_dispatch_flags, &q);
if (r < 0)
goto fail;
@ -260,7 +279,7 @@ enum nss_status _nss_resolve_gethostbyname4_r(
JSON_VARIANT_ARRAY_FOREACH(entry, p.addresses) {
AddressParameters q = {};
r = json_dispatch(entry, address_parameters_dispatch_table, NULL, 0, &q);
r = json_dispatch(entry, address_parameters_dispatch_table, NULL, json_dispatch_flags, &q);
if (r < 0)
goto fail;
@ -327,7 +346,7 @@ enum nss_status _nss_resolve_gethostbyname3_r(
int r;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(name);
assert(result);
@ -361,7 +380,7 @@ enum nss_status _nss_resolve_gethostbyname3_r(
goto fail;
}
r = json_dispatch(rparams, resolve_hostname_reply_dispatch_table, NULL, 0, &p);
r = json_dispatch(rparams, resolve_hostname_reply_dispatch_table, NULL, json_dispatch_flags, &p);
if (r < 0)
goto fail;
if (json_variant_is_blank_object(p.addresses))
@ -370,7 +389,7 @@ enum nss_status _nss_resolve_gethostbyname3_r(
JSON_VARIANT_ARRAY_FOREACH(entry, p.addresses) {
AddressParameters q = {};
r = json_dispatch(entry, address_parameters_dispatch_table, NULL, 0, &q);
r = json_dispatch(entry, address_parameters_dispatch_table, NULL, json_dispatch_flags, &q);
if (r < 0)
goto fail;
@ -415,7 +434,7 @@ enum nss_status _nss_resolve_gethostbyname3_r(
JSON_VARIANT_ARRAY_FOREACH(entry, p.addresses) {
AddressParameters q = {};
r = json_dispatch(entry, address_parameters_dispatch_table, NULL, 0, &q);
r = json_dispatch(entry, address_parameters_dispatch_table, NULL, json_dispatch_flags, &q);
if (r < 0)
goto fail;
@ -527,7 +546,7 @@ enum nss_status _nss_resolve_gethostbyaddr2_r(
int r;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(addr);
assert(result);
@ -565,7 +584,7 @@ enum nss_status _nss_resolve_gethostbyaddr2_r(
goto fail;
}
r = json_dispatch(rparams, resolve_address_reply_dispatch_table, NULL, 0, &p);
r = json_dispatch(rparams, resolve_address_reply_dispatch_table, NULL, json_dispatch_flags, &p);
if (r < 0)
goto fail;
if (json_variant_is_blank_object(p.names))
@ -574,7 +593,7 @@ enum nss_status _nss_resolve_gethostbyaddr2_r(
JSON_VARIANT_ARRAY_FOREACH(entry, p.names) {
_cleanup_(name_parameters_destroy) NameParameters q = {};
r = json_dispatch(entry, name_parameters_dispatch_table, NULL, 0, &q);
r = json_dispatch(entry, name_parameters_dispatch_table, NULL, json_dispatch_flags, &q);
if (r < 0)
goto fail;
@ -615,7 +634,7 @@ enum nss_status _nss_resolve_gethostbyaddr2_r(
size_t l;
char *z;
r = json_dispatch(entry, name_parameters_dispatch_table, NULL, 0, &q);
r = json_dispatch(entry, name_parameters_dispatch_table, NULL, json_dispatch_flags, &q);
if (r < 0)
goto fail;

35
src/nss-systemd/nss-systemd.c
View File

@ -6,6 +6,7 @@
#include "env-util.h"
#include "errno-util.h"
#include "fd-util.h"
#include "log.h"
#include "macro.h"
#include "nss-systemd.h"
#include "nss-util.h"
@ -72,6 +73,20 @@ static GetentData getgrent_data = {
.mutex = PTHREAD_MUTEX_INITIALIZER
};
static void setup_logging(void) {
/* We need a dummy function because log_parse_environment is a macro. */
log_parse_environment();
}
static void setup_logging_once(void) {
static pthread_once_t once = PTHREAD_ONCE_INIT;
assert_se(pthread_once(&once, setup_logging) == 0);
}
#define NSS_ENTRYPOINT_BEGIN \
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK); \
setup_logging_once()
NSS_GETPW_PROTOTYPES(systemd);
NSS_GETGR_PROTOTYPES(systemd);
NSS_PWENT_PROTOTYPES(systemd);
@ -88,7 +103,7 @@ enum nss_status _nss_systemd_getpwnam_r(
int e;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(name);
assert(pwd);
@ -139,7 +154,7 @@ enum nss_status _nss_systemd_getpwuid_r(
int e;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(pwd);
assert(errnop);
@ -188,7 +203,7 @@ enum nss_status _nss_systemd_getgrnam_r(
int e;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(name);
assert(gr);
@ -236,7 +251,7 @@ enum nss_status _nss_systemd_getgrgid_r(
int e;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(gr);
assert(errnop);
@ -275,7 +290,7 @@ enum nss_status _nss_systemd_getgrgid_r(
static enum nss_status nss_systemd_endent(GetentData *p) {
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(p);
@ -298,7 +313,7 @@ enum nss_status _nss_systemd_endgrent(void) {
enum nss_status _nss_systemd_setpwent(int stayopen) {
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
if (_nss_systemd_is_blocked())
return NSS_STATUS_NOTFOUND;
@ -322,7 +337,7 @@ enum nss_status _nss_systemd_setpwent(int stayopen) {
enum nss_status _nss_systemd_setgrent(int stayopen) {
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
if (_nss_systemd_is_blocked())
return NSS_STATUS_NOTFOUND;
@ -349,7 +364,7 @@ enum nss_status _nss_systemd_getpwent_r(
int r;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(result);
assert(errnop);
@ -396,7 +411,7 @@ enum nss_status _nss_systemd_getgrent_r(
int r;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(result);
assert(errnop);
@ -525,7 +540,7 @@ enum nss_status _nss_systemd_initgroups_dyn(
int r;
PROTECT_ERRNO;
BLOCK_SIGNALS(NSS_SIGNALS_BLOCK);
NSS_ENTRYPOINT_BEGIN;
assert(user_name);
assert(start);

10
src/shared/json.c
View File

@ -3854,6 +3854,16 @@ int json_log_internal(
"CONFIG_COLUMN=%u", source_column,
LOG_MESSAGE("%s:%u:%u: %s", source, source_line, source_column, buffer),
NULL);
else if (source_line > 0 && source_column > 0)
return log_struct_internal(
LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, level),
error,
file, line, func,
"MESSAGE_ID=" SD_MESSAGE_INVALID_CONFIGURATION_STR,
"CONFIG_LINE=%u", source_line,
"CONFIG_COLUMN=%u", source_column,
LOG_MESSAGE("(string):%u:%u: %s", source_line, source_column, buffer),
NULL);
else
return log_struct_internal(
LOG_REALM_PLUS_LEVEL(LOG_REALM_SYSTEMD, level),