修改return值和编译依赖

debian/control

@@ -20,7 +20,8 @@ Build-Depends: debhelper-compat (= 12),
             libopencv-dev,
             libarchive-dev,
             libtesseract-dev,
-            libpython3.8-dev
+            libpython3.8-dev,
+            libxrandr-dev
 Standards-Version: 4.4.1
 Homepage: http://gitlab2.kylin.com/kysdk/kysdk-system
 

src/proc/libkyprocess.c

@@ -192,7 +192,7 @@ float kdk_get_process_mem_usage_percent(int proc_num)
 
     FILE *fp = fopen(path, "rt");
     if (!fp)
-        return 0;
+        return 0.00;
     
     char buffer[1025];
     char buffers[1025];
@@ -227,7 +227,7 @@ char *kdk_get_process_status(int proc_num)
 
     FILE *fp = fopen(path, "rt");
     if (!fp)
-        return 0;
+        return NULL;
     
     char buffer[1025];
 
@@ -353,7 +353,7 @@ char* kdk_get_process_start_time(int proc_num)
 	t = fgets(tt, sizeof(tt), fpstat);
 	if (sscanf(t , "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %*u %*u %*d %*d %*d %*d %*d %*d %19llu %*u", &time1) == EOF) {
 		fclose(fpstat);
-		return -1;
+		return NULL;
 	}
 	fclose(fpstat);
 	time_t now;
@@ -409,7 +409,7 @@ char* kdk_get_process_running_time(int proc_num)
 	t = fgets(tt, sizeof(tt), fpstat);
 	if (sscanf(t , "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %*u %*u %*d %*d %*d %*d %*d %*d %19llu %*u", &time1) == EOF) {
 		fclose(fpstat);
-		return -1;
+		return NULL;
 	}
 	fclose(fpstat);
     
@@ -487,15 +487,15 @@ char* kdk_get_process_command(int proc_num)
     char line[1024] = {0};
 
 	if (proc_num < 0 )
-		return -1;
+		return NULL;
 	else
 		sprintf(path, "/proc/%d/cmdline", proc_num);
 
 	if (strstr(path, "../"))
-		return -1;
+		return NULL;
 
 	if ((fd = fopen(path, "r")) == NULL) {
-		return -1;
+		return NULL;
 	}
     
 	int c;
@@ -812,7 +812,7 @@ int get_proc_uid(pid_t pid, char *proc_uid)
 
 
 	if ((fpprocstat = fopen(procstatf, "r")) == NULL)
-		return NULL;
+		return -1;
 
 	while (fgets(line, sizeof(line), fpprocstat) != NULL) {
 		if (lookup(line, "Uid", &name))
@@ -827,7 +827,7 @@ int get_proc_uid(pid_t pid, char *proc_uid)
 		p = strtok(NULL,"	");
 	}
     if ((fp = fopen("/etc/passwd", "r")) == NULL)
-		return NULL;
+		return -1;
 
 	while (fgets(buff, sizeof(buff), fp) != NULL) {
 		if(strstr(buff, buf[1]))
@@ -1036,7 +1036,7 @@ int get_proc_running_time(pid_t pid, char *proc_time)
     sprintf(path, "/proc/%d/stat", pid);
 	FILE *fpstat = fopen(path, "r");
 	if (fpstat == NULL) {
-		return NULL;
+		return -1;
 	}
 
 	t = fgets(tt, sizeof(tt), fpstat);

src/systeminfo/libkysysinfo.c

@@ -890,7 +890,7 @@ char** kdk_system_get_resolving_power()
 
                 dirfd = opendir("/sys/class/drm");
                 if (! dirfd) {
-                    return 0;
+                    return NULL;
                 }
                 while ((direfd = readdir(dirfd))) {
                     strcpy(temp, info->name);
@@ -907,7 +907,7 @@ char** kdk_system_get_resolving_power()
                         fp = fopen(path, "r");
                         if(fp == NULL)
                         {
-                            return 0;
+                            return NULL;
                         }
                         memset(mode,0,200*sizeof(char));
                         while(fgets(buf, BUF_SIZE-1, fp)){