pidfile: Don't push opts.pidfile as write_pidfile arg

opts are criu-wide available.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

cr-restore.c

@@ -987,7 +987,7 @@ static inline int fork_with_pid(struct pstree_item *item)
 
 		pid = ret;
 
-		ret = write_pidfile(opts.pidfile, pid);
+		ret = write_pidfile(pid);
 		if (ret < 0) {
 			pr_perror("Can't write pidfile");
 			kill(pid, SIGKILL);

cr-service.c

@@ -386,7 +386,7 @@ int cr_service(bool daemon_mode)
 	}
 
 	if (opts.pidfile) {
-		if (write_pidfile(opts.pidfile, getpid()) == -1) {
+		if (write_pidfile(getpid()) == -1) {
 			pr_perror("Can't write pidfile");
 			return -1;
 		}

include/log.h

@@ -19,7 +19,7 @@ extern int vprint_num(char *buf, int blen, int num, char **ps);
 extern void print_on_level(unsigned int loglevel, const char *format, ...)
 	__attribute__ ((__format__ (__printf__, 2, 3)));
 
-extern int write_pidfile(char *pfname, int pid);
+extern int write_pidfile(int pid);
 
 #ifndef LOG_PREFIX
 # define LOG_PREFIX

log.c

@@ -171,13 +171,13 @@ void print_on_level(unsigned int loglevel, const char *format, ...)
 	va_end(params);
 }
 
-int write_pidfile(char *pfname, int pid)
+int write_pidfile(int pid)
 {
 	int fd;
 
-	fd = open(pfname, O_WRONLY | O_TRUNC | O_CREAT, 0600);
+	fd = open(opts.pidfile, O_WRONLY | O_TRUNC | O_CREAT, 0600);
 	if (fd == -1) {
-		pr_perror("Can't open %s", pfname);
+		pr_perror("Can't open %s", opts.pidfile);
 		return -1;
 	}
 

page-xfer.c

@@ -277,7 +277,7 @@ int cr_page_server(bool daemon_mode)
 		}
 
 	if (opts.pidfile) {
-		if (write_pidfile(opts.pidfile, getpid()) == -1) {
+		if (write_pidfile(getpid()) == -1) {
 			pr_perror("Can't write pidfile");
 			return -1;
 		}