allow to pass signal by name or its number

src/include/66/ssexec.h

@@ -239,7 +239,7 @@ extern char const *help_halt ;
 #define OPTS_STOP_LEN (sizeof OPTS_STOP - 1)
 #define OPTS_STATUS "hno:grd:p:"
 #define OPTS_STATUS_LEN (sizeof OPTS_STATUS - 1)
-#define OPTS_SIGNAL "habqHkti12pcyrodDuUxOQw:P"
+#define OPTS_SIGNAL "habqHkti12pcys:rodDuUxOQw:P"
 #define OPTS_SIGNAL_LEN (sizeof OPTS_SIGNAL - 1)
 #define OPTS_ENV "hc:s:VLr:e:i:"
 #define OPTS_ENV_LEN (sizeof OPTS_ENV - 1)

src/lib66/exec/ssexec_signal.c

@@ -20,6 +20,7 @@
 #include <oblibs/types.h>
 
 #include <skalibs/sgetopt.h>
+#include <skalibs/nsig.h>
 
 #include <66/svc.h>
 #include <66/config.h>
@@ -29,6 +30,22 @@
 #include <66/state.h>
 #include <66/enum.h>
 
+static char const cmdsig[NSIG] = {
+
+    [SIGALRM] = 'a',
+    [SIGABRT] = 'b',
+    [SIGQUIT] = 'q',
+    [SIGHUP] = 'h',
+    [SIGKILL] = 'k',
+    [SIGTERM] = 't',
+    [SIGINT] = 'i',
+    [SIGUSR1] = '1',
+    [SIGUSR2] = '2',
+    [SIGSTOP] = 'p',
+    [SIGCONT] = 'c',
+    [SIGWINCH] = 'y'
+} ;
+
 int ssexec_signal(int argc, char const *const *argv, ssexec_t *info)
 {
     log_flow() ;
@@ -77,6 +94,15 @@ int ssexec_signal(int argc, char const *const *argv, ssexec_t *info)
             if (opt == -1) break ;
 
             switch (opt) {
+                case 's' :
+                    {
+                        int sig ;
+                        if (!sig0_scan(l.arg, &sig))
+                            log_die(LOG_EXIT_USER, "invalid signal: ", l.arg) ;
+                        if (!cmdsig[sig])
+                            log_die(LOG_EXIT_USER, l.arg, " is not in the list of user-available signals") ;
+                        opt = cmdsig[sig] ;
+                    }
                 case 'h' : info_help(info->help, info->usage) ; return 0 ;
                 case 'a' :
                 case 'b' :