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conmon: Drop json-glib dependency

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json-glib is a fine library for parsing json. However, all we need
to do is generate some trivial json output, so it is not needed.

Signed-off-by: Alexander Larsson <alexl@redhat.com>
This commit is contained in:
Alexander Larsson 2017-06-02 15:19:15 +02:00
parent f3408cbb5c
commit 1a168cb196
2 changed files with 35 additions and 24 deletions
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2
conmon/Makefile
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@ -2,7 +2,7 @@ src = $(wildcard *.c)
obj = $(src:.c=.o)
override LIBS += $(shell pkg-config --libs glib-2.0 json-glib-1.0)
override CFLAGS += -std=c99 -Wall -Wextra $(shell pkg-config --cflags glib-2.0 json-glib-1.0)
override CFLAGS += -std=c99 -Wall -Wextra $(shell pkg-config --cflags glib-2.0)
conmon: $(obj)
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)

57
conmon/conmon.c
View file

@ -18,7 +18,6 @@
#include <unistd.h>
#include <glib.h>
#include <json-glib/json-glib.h>
#include "cmsg.h"
@ -400,6 +399,34 @@ static char *process_cgroup_subsystem_path(int pid, const char *subsystem) {
return NULL;
}
static char *escape_json_string(const char *str)
{
GString *escaped;
const char *p;
p = str;
escaped = g_string_sized_new(strlen(str));
while (*p != 0) {
char c = *p++;
if (c == '\\' || c == '"') {
g_string_append_c(escaped, '\\');
g_string_append_c(escaped, c);
} else if (c == '\n') {
g_string_append_printf (escaped, "\\n");
} else if (c == '\t') {
g_string_append_printf (escaped, "\\t");
} else if ((c > 0 && c < 0x1f) || c == 0x7f) {
g_string_append_printf (escaped, "\\u00%02x", (guint)c);
} else {
g_string_append_c (escaped, c);
}
}
return g_string_free (escaped, FALSE);
}
int main(int argc, char *argv[])
{
int ret, runtime_status;
@ -685,32 +712,16 @@ int main(int argc, char *argv[])
*/
num_read = read(masterfd_stderr, buf, BUF_SIZE);
if (num_read > 0) {
_cleanup_free_ char *escaped_message = NULL;
ssize_t len;
buf[num_read] = '\0';
JsonGenerator *generator = json_generator_new();
JsonNode *root;
JsonObject *object;
gchar *data;
gsize len;
escaped_message = escape_json_string(buf);
root = json_node_new(JSON_NODE_OBJECT);
object = json_object_new();
json_object_set_int_member(object, "pid", -1);
json_object_set_string_member(object, "message", buf);
json_node_take_object(root, object);
json_generator_set_root(generator, root);
g_object_set(generator, "pretty", FALSE, NULL);
data = json_generator_to_data (generator, &len);
fprintf(stderr, "%s\n", data);
if (write_all(sync_pipe_fd, data, len) != (int)len) {
len = snprintf(buf, BUF_SIZE, "{\"pid\": %d, \"message\": \"%s\"}\n", -1, escaped_message);
if (len < 0 || write_all(sync_pipe_fd, buf, len) != len) {
ninfo("Unable to send container stderr message to parent");
}
g_free(data);
json_node_free(root);
g_object_unref(generator);
}
}
}