Add instances implementation (still needs testing)

Signed-off-by: Laurent Bercot <ska@appnovation.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/src/instance/s6-instance-delete.c b/src/instance/s6-instance-delete.c
new file mode 100644
index 0000000..fc1337a
--- /dev/null
+++ b/src/instance/s6-instance-delete.c
@@ -0,0 +1,61 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <skalibs/bytestr.h>
+#include <skalibs/types.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/tai.h>
+#include <skalibs/strerr.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/djbunix.h>
+
+#include <s6/supervise.h>
+
+#define USAGE "s6-instance-delete [ -X ] [ -t timeout ] service instancename"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+int main (int argc, char const *const *argv)
+{
+  tain tto = TAIN_INFINITE_RELATIVE ;
+  uint32_t options = 1 ;
+  PROG = "s6-instance-delete" ;
+  {
+    unsigned int t = 0 ;
+    subgetopt l = SUBGETOPT_ZERO ;
+    for (;;)
+    {
+      int opt = subgetopt_r(argc, argv, "Xt:", &l) ;
+      if (opt == -1) break ;
+      switch (opt)
+      {
+        case 'X' : options &= ~1U ; break ;
+        case 't' : if (!uint0_scan(l.arg, &t)) dieusage() ; break ;
+        default : dieusage() ;
+      }
+    }
+    argc -= l.ind ; argv += l.ind ;
+    if (t) tain_from_millisecs(&tto, t) ;
+  }
+  if (argc < 2) dieusage() ;
+  if (!argv[0][0]) strerr_dief1x(100, "invalid service path") ;
+  if (!argv[1][0] || argv[1][0] == '.' || byte_in(argv[1], strlen(argv[1]), " \t\f\r\n", 5) < 5)
+    strerr_dief1x(100, "invalid instance name") ;
+
+  tain_now_set_stopwatch_g() ;
+  tain_add_g(&tto, &tto) ;
+
+  {
+    size_t svlen = strlen(argv[0]) ;
+    char sc[svlen + 10] ;
+    memcpy(sc, argv[0], svlen) ;
+    memcpy(sc + svlen, "/instance", 10) ;
+    if (s6_supervise_unlink_names_g(sc, argv + 1, 1, options, &tto) == -1)
+      strerr_diefu4sys(111, "prepare deletion of instance ", argv[1], " of service ", argv[0]) ;
+  }
+
+  return 0 ;
+}