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| -rw-r--r-- | libbb/pidfile.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/libbb/pidfile.c b/libbb/pidfile.c new file mode 100644 index 0000000..41565b6 --- /dev/null +++ b/libbb/pidfile.c @@ -0,0 +1,29 @@ +/* vi: set sw=4 ts=4: */ +/* + * pid file routines + * + * Copyright (C) 2007 by Stephane Billiart <stephane.billiart@gmail.com> + * + * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. + */ +#include "libbb.h" + +#if ENABLE_FEATURE_PIDFILE +int write_pidfile(const char *path) +{ + int pid_fd; + char *end; + char buf[sizeof(int)*3 + 2]; + + /* we will overwrite stale pidfile */ + pid_fd = open(path, O_WRONLY|O_CREAT|O_TRUNC); + if (pid_fd < 0) + return 0; + /* few bytes larger, but doesn't use stdio */ + end = utoa_to_buf(getpid(), buf, sizeof(buf)); + end[0] = '\n'; + full_write(pid_fd, buf, end - buf + 1); + close(pid_fd); + return 1; +} +#endif |