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-rw-r--r--libnetdata/Makefile.am1
-rw-r--r--libnetdata/health/health.c2
-rw-r--r--libnetdata/json/json.c11
-rw-r--r--libnetdata/popen/popen.c150
-rw-r--r--libnetdata/popen/popen.h3
-rw-r--r--libnetdata/required_dummies.h38
-rw-r--r--libnetdata/storage_number/Makefile.am3
-rw-r--r--libnetdata/storage_number/tests/Makefile.am4
-rw-r--r--libnetdata/storage_number/tests/test_storage_number.c49
-rw-r--r--libnetdata/tests/Makefile.am4
-rw-r--r--libnetdata/tests/test_str2ld.c48
11 files changed, 277 insertions, 36 deletions
diff --git a/libnetdata/Makefile.am b/libnetdata/Makefile.am
index 87f12b32c..7dc808fab 100644
--- a/libnetdata/Makefile.am
+++ b/libnetdata/Makefile.am
@@ -23,6 +23,7 @@ SUBDIRS = \
storage_number \
threads \
url \
+ tests \
$(NULL)
dist_noinst_DATA = \
diff --git a/libnetdata/health/health.c b/libnetdata/health/health.c
index a70f284b1..e03538db3 100644
--- a/libnetdata/health/health.c
+++ b/libnetdata/health/health.c
@@ -112,7 +112,7 @@ int health_silencers_json_read_callback(JSON_ENTRY *e)
case JSON_OBJECT:
#ifndef ENABLE_JSONC
e->callback_function = health_silencers_json_read_callback;
- if(e->name && strcmp(e->name,"")) {
+ if(strcmp(e->name,"")) {
// init silencer
debug(D_HEALTH, "JSON: Got object with a name, initializing new silencer for %s",e->name);
#endif
diff --git a/libnetdata/json/json.c b/libnetdata/json/json.c
index 7c5adca3d..3ccc561c6 100644
--- a/libnetdata/json/json.c
+++ b/libnetdata/json/json.c
@@ -284,18 +284,13 @@ size_t json_walk_primitive(char *js, jsmntok_t *t, size_t start, JSON_ENTRY *e)
* @param t the tokens
* @param nest the length of structure t
* @param start the first position
- * @param e the output structure.
+ * @param e the structure with values and callback to be used inside the function.
*
* @return It returns the array length
*/
size_t json_walk_array(char *js, jsmntok_t *t, size_t nest, size_t start, JSON_ENTRY *e)
{
- JSON_ENTRY ne = {
- .name = "",
- .fullname = "",
- .callback_data = NULL,
- .callback_function = NULL
- };
+ JSON_ENTRY ne;
char old = js[t[start].end];
js[t[start].end] = '\0';
@@ -315,7 +310,7 @@ size_t json_walk_array(char *js, jsmntok_t *t, size_t nest, size_t start, JSON_E
start++;
for(i = 0; i < size ; i++) {
ne.pos = i;
- if (!e->name || !e->fullname || strlen(e->name) > JSON_NAME_LEN - 24 || strlen(e->fullname) > JSON_FULLNAME_LEN -24) {
+ if (strlen(e->name) > JSON_NAME_LEN - 24 || strlen(e->fullname) > JSON_FULLNAME_LEN -24) {
info("JSON: JSON walk_array ignoring element with name:%s fullname:%s",e->name, e->fullname);
continue;
}
diff --git a/libnetdata/popen/popen.c b/libnetdata/popen/popen.c
index 906b10535..1c4ae64d6 100644
--- a/libnetdata/popen/popen.c
+++ b/libnetdata/popen/popen.c
@@ -2,46 +2,79 @@
#include "../libnetdata.h"
-/*
+static pthread_mutex_t myp_lock;
+static int myp_tracking = 0;
+
struct mypopen {
pid_t pid;
- FILE *fp;
struct mypopen *next;
struct mypopen *prev;
};
static struct mypopen *mypopen_root = NULL;
-static void mypopen_add(FILE *fp, pid_t *pid) {
- struct mypopen *mp = malloc(sizeof(struct mypopen));
- if(!mp) {
- fatal("Cannot allocate %zu bytes", sizeof(struct mypopen))
+// myp_add_lock takes the lock if we're tracking.
+static void myp_add_lock(void) {
+ if (myp_tracking == 0)
return;
- }
- mp->fp = fp;
+ netdata_mutex_lock(&myp_lock);
+}
+
+// myp_add_unlock release the lock if we're tracking.
+static void myp_add_unlock(void) {
+ if (myp_tracking == 0)
+ return;
+
+ netdata_mutex_unlock(&myp_lock);
+}
+
+// myp_add_locked adds pid if we're tracking.
+// myp_add_lock must have been called previously.
+static void myp_add_locked(pid_t pid) {
+ struct mypopen *mp;
+
+ if (myp_tracking == 0)
+ return;
+
+ mp = mallocz(sizeof(struct mypopen));
mp->pid = pid;
- mp->next = popen_root;
+
+ mp->next = mypopen_root;
mp->prev = NULL;
- if(mypopen_root) mypopen_root->prev = mp;
+ if (mypopen_root != NULL)
+ mypopen_root->prev = mp;
mypopen_root = mp;
+ netdata_mutex_unlock(&myp_lock);
}
-static void mypopen_del(FILE *fp) {
+// myp_del deletes pid if we're tracking.
+static void myp_del(pid_t pid) {
struct mypopen *mp;
- for(mp = mypopen_root; mp; mp = mp->next)
- if(mp->fd == fp) break;
+ if (myp_tracking == 0)
+ return;
- if(!mp) error("Cannot find mypopen() file pointer in open childs.");
- else {
- if(mp->next) mp->next->prev = mp->prev;
- if(mp->prev) mp->prev->next = mp->next;
- if(mypopen_root == mp) mypopen_root = mp->next;
- free(mp);
+ netdata_mutex_lock(&myp_lock);
+ for (mp = mypopen_root; mp != NULL; mp = mp->next) {
+ if (mp->pid == pid) {
+ if (mp->next != NULL)
+ mp->next->prev = mp->prev;
+ if (mp->prev != NULL)
+ mp->prev->next = mp->next;
+ if (mypopen_root == mp)
+ mypopen_root = mp->next;
+ freez(mp);
+ break;
+ }
}
+
+ if (mp == NULL)
+ error("Cannot find pid %d.", pid);
+
+ netdata_mutex_unlock(&myp_lock);
}
-*/
+
#define PIPE_READ 0
#define PIPE_WRITE 1
@@ -58,7 +91,7 @@ static inline FILE *custom_popene(const char *command, volatile pid_t *pidptr, c
posix_spawnattr_t attr;
posix_spawn_file_actions_t fa;
- if(pipe(pipefd) == -1)
+ if (pipe(pipefd) == -1)
return NULL;
if ((fp = fdopen(pipefd[PIPE_READ], "r")) == NULL) {
goto error_after_pipe;
@@ -66,7 +99,7 @@ static inline FILE *custom_popene(const char *command, volatile pid_t *pidptr, c
// Mark all files to be closed by the exec() stage of posix_spawn()
int i;
- for(i = (int) (sysconf(_SC_OPEN_MAX) - 1); i >= 0; i--)
+ for (i = (int) (sysconf(_SC_OPEN_MAX) - 1); i >= 0; i--)
if(i != STDIN_FILENO && i != STDERR_FILENO)
(void)fcntl(i, F_SETFD, FD_CLOEXEC);
@@ -92,10 +125,16 @@ static inline FILE *custom_popene(const char *command, volatile pid_t *pidptr, c
} else {
error("posix_spawnattr_init() failed.");
}
+
+ // Take the lock while we fork to ensure we don't race with SIGCHLD
+ // delivery on a process which exits quickly.
+ myp_add_lock();
if (!posix_spawn(&pid, "/bin/sh", &fa, &attr, spawn_argv, env)) {
*pidptr = pid;
+ myp_add_locked(pid);
debug(D_CHILDS, "Spawned command: '%s' on pid %d from parent pid %d.", command, pid, getpid());
} else {
+ myp_add_unlock();
error("Failed to spawn command: '%s' from parent pid %d.", command, getpid());
fclose(fp);
fp = NULL;
@@ -128,6 +167,60 @@ error_after_pipe:
// See man environ
extern char **environ;
+// myp_init should be called by apps which act as init
+// (pid 1) so that processes created by mypopen and mypopene
+// are tracked. This enables the reaper to ignore processes
+// which will be handled internally, by calling myp_reap, to
+// avoid issues with already reaped processes during wait calls.
+//
+// Callers should call myp_free() to clean up resources.
+void myp_init(void) {
+ info("process tracking enabled.");
+ myp_tracking = 1;
+
+ if (netdata_mutex_init(&myp_lock) != 0) {
+ fatal("myp_init() mutex init failed.");
+ }
+}
+
+// myp_free cleans up any resources allocated for process
+// tracking.
+void myp_free(void) {
+ struct mypopen *mp, *next;
+
+ if (myp_tracking == 0)
+ return;
+
+ netdata_mutex_lock(&myp_lock);
+ for (mp = mypopen_root; mp != NULL; mp = next) {
+ next = mp->next;
+ freez(mp);
+ }
+
+ mypopen_root = NULL;
+ myp_tracking = 0;
+ netdata_mutex_unlock(&myp_lock);
+}
+
+// myp_reap returns 1 if pid should be reaped, 0 otherwise.
+int myp_reap(pid_t pid) {
+ struct mypopen *mp;
+
+ if (myp_tracking == 0)
+ return 0;
+
+ netdata_mutex_lock(&myp_lock);
+ for (mp = mypopen_root; mp != NULL; mp = mp->next) {
+ if (mp->pid == pid) {
+ netdata_mutex_unlock(&myp_lock);
+ return 0;
+ }
+ }
+ netdata_mutex_unlock(&myp_lock);
+
+ return 1;
+}
+
FILE *mypopen(const char *command, volatile pid_t *pidptr) {
return custom_popene(command, pidptr, environ);
}
@@ -137,9 +230,10 @@ FILE *mypopene(const char *command, volatile pid_t *pidptr, char **env) {
}
int mypclose(FILE *fp, pid_t pid) {
- debug(D_EXIT, "Request to mypclose() on pid %d", pid);
+ int ret;
+ siginfo_t info;
- /*mypopen_del(fp);*/
+ debug(D_EXIT, "Request to mypclose() on pid %d", pid);
// close the pipe fd
// this is required in musl
@@ -151,9 +245,11 @@ int mypclose(FILE *fp, pid_t pid) {
errno = 0;
- siginfo_t info;
- if(waitid(P_PID, (id_t) pid, &info, WEXITED) != -1) {
- switch(info.si_code) {
+ ret = waitid(P_PID, (id_t) pid, &info, WEXITED);
+ myp_del(pid);
+
+ if (ret != -1) {
+ switch (info.si_code) {
case CLD_EXITED:
if(info.si_status)
error("child pid %d exited with code %d.", info.si_pid, info.si_status);
diff --git a/libnetdata/popen/popen.h b/libnetdata/popen/popen.h
index 90d4b829b..32f64e460 100644
--- a/libnetdata/popen/popen.h
+++ b/libnetdata/popen/popen.h
@@ -11,6 +11,9 @@
extern FILE *mypopen(const char *command, volatile pid_t *pidptr);
extern FILE *mypopene(const char *command, volatile pid_t *pidptr, char **env);
extern int mypclose(FILE *fp, pid_t pid);
+extern void myp_init(void);
+extern void myp_free(void);
+extern int myp_reap(pid_t pid);
extern void signals_unblock(void);
extern void signals_reset(void);
diff --git a/libnetdata/required_dummies.h b/libnetdata/required_dummies.h
new file mode 100644
index 000000000..aa87e3964
--- /dev/null
+++ b/libnetdata/required_dummies.h
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_LIB_DUMMIES_H
+#define NETDATA_LIB_DUMMIES_H 1
+
+// callback required by fatal()
+void netdata_cleanup_and_exit(int ret)
+{
+ exit(ret);
+}
+
+void send_statistics(const char *action, const char *action_result, const char *action_data)
+{
+ (void)action;
+ (void)action_result;
+ (void)action_data;
+ return;
+}
+
+// callbacks required by popen()
+void signals_block(void){};
+void signals_unblock(void){};
+void signals_reset(void){};
+
+// callback required by eval()
+int health_variable_lookup(const char *variable, uint32_t hash, struct rrdcalc *rc, calculated_number *result)
+{
+ (void)variable;
+ (void)hash;
+ (void)rc;
+ (void)result;
+ return 0;
+};
+
+// required by get_system_cpus()
+char *netdata_configured_host_prefix = "";
+
+#endif // NETDATA_LIB_DUMMIES_H
diff --git a/libnetdata/storage_number/Makefile.am b/libnetdata/storage_number/Makefile.am
index 1cb69ed99..349dd71f1 100644
--- a/libnetdata/storage_number/Makefile.am
+++ b/libnetdata/storage_number/Makefile.am
@@ -3,6 +3,9 @@
AUTOMAKE_OPTIONS = subdir-objects
MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+SUBDIRS = \
+ tests \
+ $(NULL)
dist_noinst_DATA = \
README.md \
diff --git a/libnetdata/storage_number/tests/Makefile.am b/libnetdata/storage_number/tests/Makefile.am
new file mode 100644
index 000000000..babdcf0df
--- /dev/null
+++ b/libnetdata/storage_number/tests/Makefile.am
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
diff --git a/libnetdata/storage_number/tests/test_storage_number.c b/libnetdata/storage_number/tests/test_storage_number.c
new file mode 100644
index 000000000..61a0c1880
--- /dev/null
+++ b/libnetdata/storage_number/tests/test_storage_number.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../../libnetdata.h"
+#include "../../required_dummies.h"
+#include <setjmp.h>
+#include <cmocka.h>
+
+static void test_number_pinting(void **state)
+{
+ (void)state;
+
+ char value[50];
+
+ print_calculated_number(value, 0);
+ assert_string_equal(value, "0");
+
+ print_calculated_number(value, 0.0000001);
+ assert_string_equal(value, "0.0000001");
+
+ print_calculated_number(value, 0.00000009);
+ assert_string_equal(value, "0.0000001");
+
+ print_calculated_number(value, 0.000000001);
+ assert_string_equal(value, "0");
+
+ print_calculated_number(value, 99.99999999999999999);
+ assert_string_equal(value, "100");
+
+ print_calculated_number(value, -99.99999999999999999);
+ assert_string_equal(value, "-100");
+
+ print_calculated_number(value, 123.4567890123456789);
+ assert_string_equal(value, "123.456789");
+
+ print_calculated_number(value, 9999.9999999);
+ assert_string_equal(value, "9999.9999999");
+
+ print_calculated_number(value, -9999.9999999);
+ assert_string_equal(value, "-9999.9999999");
+}
+
+int main(void)
+{
+ const struct CMUnitTest tests[] = {
+ cmocka_unit_test(test_number_pinting)
+ };
+
+ return cmocka_run_group_tests_name("storage_number", tests, NULL, NULL);
+}
diff --git a/libnetdata/tests/Makefile.am b/libnetdata/tests/Makefile.am
new file mode 100644
index 000000000..babdcf0df
--- /dev/null
+++ b/libnetdata/tests/Makefile.am
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
diff --git a/libnetdata/tests/test_str2ld.c b/libnetdata/tests/test_str2ld.c
new file mode 100644
index 000000000..9d59f6c0e
--- /dev/null
+++ b/libnetdata/tests/test_str2ld.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
+#include "../required_dummies.h"
+#include <setjmp.h>
+#include <cmocka.h>
+
+static void test_str2ld(void **state)
+{
+ (void)state;
+ char *values[] = {
+ "1.2345678",
+ "-35.6",
+ "0.00123",
+ "23842384234234.2",
+ ".1",
+ "1.2e-10",
+ "hello",
+ "1wrong",
+ "nan",
+ "inf",
+ NULL
+ };
+
+ for (int i = 0; values[i]; i++) {
+ char *e_mine = "hello", *e_sys = "world";
+ LONG_DOUBLE mine = str2ld(values[i], &e_mine);
+ LONG_DOUBLE sys = strtold(values[i], &e_sys);
+
+ if (isnan(mine))
+ assert_true(isnan(sys));
+ else if (isinf(mine))
+ assert_true(isinf(sys));
+ else if (mine != sys)
+ assert_false(abs(mine - sys) > 0.000001);
+
+ assert_ptr_equal(e_mine, e_sys);
+ }
+}
+
+int main(void)
+{
+ const struct CMUnitTest tests[] = {
+ cmocka_unit_test(test_str2ld)
+ };
+
+ return cmocka_run_group_tests_name("str2ld", tests, NULL, NULL);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 21:14:32 +0000