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-rw-r--r--libbb/pidfile.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/libbb/pidfile.c b/libbb/pidfile.c
index 50af91f4e..64e67c322 100644
--- a/libbb/pidfile.c
+++ b/libbb/pidfile.c
@@ -17,13 +17,15 @@ int write_pidfile(const char *path)
17 char *end; 17 char *end;
18 char buf[sizeof(int)*3 + 2]; 18 char buf[sizeof(int)*3 + 2];
19 19
20 if (!path)
21 return 1;
20 /* we will overwrite stale pidfile */ 22 /* we will overwrite stale pidfile */
21 pid_fd = open(path, O_WRONLY|O_CREAT|O_TRUNC, 0666); 23 pid_fd = open(path, O_WRONLY|O_CREAT|O_TRUNC, 0666);
22 if (pid_fd < 0) 24 if (pid_fd < 0)
23 return 0; 25 return 0;
24 /* few bytes larger, but doesn't use stdio */ 26 /* few bytes larger, but doesn't use stdio */
25 end = utoa_to_buf(getpid(), buf, sizeof(buf)); 27 end = utoa_to_buf(getpid(), buf, sizeof(buf));
26 end[0] = '\n'; 28 *end = '\n';
27 full_write(pid_fd, buf, end - buf + 1); 29 full_write(pid_fd, buf, end - buf + 1);
28 close(pid_fd); 30 close(pid_fd);
29 return 1; 31 return 1;