diff options
Diffstat (limited to 'process.c')
| -rw-r--r-- | process.c | 35 |
1 files changed, 35 insertions, 0 deletions
@@ -4219,6 +4219,40 @@ proc_setpgid(VALUE obj, VALUE pid, VALUE pgrp) #endif +#ifdef HAVE_GETSID +/* + * call-seq: + * Process.getsid() -> integer + * Process.getsid(pid) -> integer + * + * Returns the session ID for for the given process id. If not give, + * return current process sid. Not available on all platforms. + * + * Process.getsid() #=> 27422 + * Process.getsid(0) #=> 27422 + * Process.getsid(Process.pid()) #=> 27422 + */ +static VALUE +proc_getsid(int argc, VALUE *argv) +{ + rb_pid_t sid; + VALUE pid; + + rb_secure(2); + rb_scan_args(argc, argv, "01", &pid); + + if (NIL_P(pid)) + pid = INT2NUM(0); + + sid = getsid(NUM2PIDT(pid)); + if (sid < 0) rb_sys_fail(0); + return PIDT2NUM(sid); +} +#else +#define proc_getsid rb_f_notimplement +#endif + + #if defined(HAVE_SETSID) || (defined(HAVE_SETPGRP) && defined(TIOCNOTTY)) #if !defined(HAVE_SETSID) static rb_pid_t ruby_setsid(void); @@ -6609,6 +6643,7 @@ Init_process(void) rb_define_module_function(rb_mProcess, "getpgid", proc_getpgid, 1); rb_define_module_function(rb_mProcess, "setpgid", proc_setpgid, 2); + rb_define_module_function(rb_mProcess, "getsid", proc_getsid, -1); rb_define_module_function(rb_mProcess, "setsid", proc_setsid, 0); rb_define_module_function(rb_mProcess, "getpriority", proc_getpriority, 2); |