Add s6 live reload

4 files changed, 76 insertions, 0 deletions

diff --git a/src/s6-frontend/deps-exe/s6-frontend b/src/s6-frontend/deps-exe/s6-frontend
index 8903175..b6d45c0 100644
--- a/src/s6-frontend/deps-exe/s6-frontend
+++ b/src/s6-frontend/deps-exe/s6-frontend
@@ -1,6 +1,7 @@
 live.o
 live_help.o
 live_install.o
+live_reload.o
 live_startstop.o
 live_status.o
 live_start_everything.o
diff --git a/src/s6-frontend/live.c b/src/s6-frontend/live.c
index c1942b1..467dd40 100644
--- a/src/s6-frontend/live.c
+++ b/src/s6-frontend/live.c
@@ -17,6 +17,7 @@ void live (char const *const *argv)
   {
     { .s = "help", .f = &live_help },
     { .s = "install", .f = &live_install },
+    { .s = "reload", .f = &live_reload },
     { .s = "reset", .f = &live_reset },
     { .s = "restart", .f = &live_restart },
     { .s = "start", .f = &live_start },
diff --git a/src/s6-frontend/live_reload.c b/src/s6-frontend/live_reload.c
new file mode 100644
index 0000000..1750440
--- /dev/null
+++ b/src/s6-frontend/live_reload.c
@@ -0,0 +1,73 @@
+/* ISC license. */
+
+#include <skalibs/uint64.h>
+#include <skalibs/types.h>
+#include <skalibs/strerr.h>
+#include <skalibs/gol.h>
+#include <skalibs/env.h>
+
+#include <s6-frontend/config.h>
+#include "s6-frontend-internal.h"
+
+enum golb_e
+{
+  GOLB_DRYRUN = 0x01,
+} ;
+
+enum gola_e
+{
+  GOLA_TIMEOUT,
+  GOLA_N
+} ;
+
+void live_reload (char const *const *argv)
+{
+  static gol_bool const rgolb[] =
+  {
+    { .so = 'n', .lo = "dry-run", .clear = 0, .set = GOLB_DRYRUN },
+  } ;
+  static gol_arg const rgola[] =
+  {
+    { .so = 't', .lo = "timeout", .i = GOLA_TIMEOUT },
+  } ;
+  uint64_t wgolb = 0 ;
+  char const *wgola[GOLA_N] = { 0 } ;
+  unsigned int timeout = 0 ;
+  unsigned int m = 0 ;
+  unsigned int argc ;
+  char fmtv[UINT_FMT] ;
+  char fmtt[UINT_FMT] ;
+
+  argv += GOL_argv(argv, rgolb, rgola, &wgolb, wgola) ;
+  if (!*argv) strerr_die(100, "usage: ", "s6 live reload [ -n ] [ -t timeout ] services...") ;
+  if (wgola[GOLA_TIMEOUT])
+  {
+    if (!uint0_scan(wgola[GOLA_TIMEOUT], &timeout))
+      strerr_dief1x(100, "timeout must be an integer (milliseconds)") ;
+  }
+  argc = env_len(argv) ;
+
+  char const *newargv[11 + argc] ;
+  newargv[m++] = S6RC_EXTBINPREFIX "s6-rc" ;
+  if (g->verbosity != 1)
+  {
+    fmtv[uint_fmt(fmtv, g->verbosity)] = 0 ;
+    newargv[m++] = "-v" ;
+    newargv[m++] = fmtv ;
+  }
+  if (timeout)
+  {
+    fmtt[uint_fmt(fmtt, timeout)] = 0 ;
+    newargv[m++] = "-t" ;
+    newargv[m++] = fmtt ;
+  }
+  if (wgolb & GOLB_DRYRUN) newargv[m++] = "-n1" ;
+  newargv[m++] = "-l" ;
+  newargv[m++] = g->dirs.live ;
+  newargv[m++] = "-b" ;
+  newargv[m++] = "--" ;
+  newargv[m++] = "reload" ;
+  for (unsigned int i = 0 ; i < argc ; i++) newargv[m++] = argv[i] ;
+  newargv[m++] = 0 ;
+  main_exec(newargv) ;
+}
diff --git a/src/s6-frontend/s6-frontend-internal.h b/src/s6-frontend/s6-frontend-internal.h
index 2bc83b0..dad191b 100644
--- a/src/s6-frontend/s6-frontend-internal.h
+++ b/src/s6-frontend/s6-frontend-internal.h
@@ -26,6 +26,7 @@ extern void exec_live_start_everything (unsigned int, char const *, unsigned int
 extern void live (char const *const *) gccattr_noreturn ;
 extern void live_help (char const *const *) gccattr_noreturn ;
 
+extern void live_reload (char const *const *) gccattr_noreturn ;
 extern void live_restart (char const *const *) gccattr_noreturn ;
 extern void live_start (char const *const *) gccattr_noreturn ;
 extern void live_status (char const *const *) gccattr_noreturn ;