1 files changed, 68 insertions, 0 deletions
diff --git a/src/libs6rc/s6rc_repo_listcontents.c b/src/libs6rc/s6rc_repo_listcontents.c
new file mode 100644
index 0000000..0e493c6
--- /dev/null
+++ b/src/libs6rc/s6rc_repo_listcontents.c
@@ -0,0 +1,68 @@
+/* ISC license. */
+
+#include <sys/wait.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <skalibs/posixplz.h>
+#include <skalibs/types.h>
+#include <skalibs/strerr.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/genalloc.h>
+#include <skalibs/cspawn.h>
+#include <skalibs/djbunix.h>
+
+#include <s6-rc/config.h>
+#include <s6-rc/s6rc-utils.h>
+#include <s6-rc/repo.h>
+
+int s6rc_repo_listcontents (char const *repo, char const *bundle, stralloc *storage, genalloc *indices)
+{
+  int swasnull = !storage->s ;
+  int gwasnull = !indices->s ;
+  size_t sabase = storage->len ;
+  size_t gabase = genalloc_len(size_t, indices) ;
+  size_t repolen = strlen(repo) ;
+  pid_t pid ;
+  int fd ;
+  int wstat ;
+  char refdb[repolen + 15] ;
+  char const *argv[8] = { S6RC_BINPREFIX "s6-rc-db", "-c", refdb, "-b", "--", "contents", bundle, 0 } ;
+
+  memcpy(refdb, repo, repolen) ;
+  memcpy(refdb + repolen, "/compiled/.ref", 15) ;
+  pid = child_spawn1_pipe(argv[0], argv, (char const *const *)environ, &fd, 1) ;
+  if (!pid) { strerr_warnfu2sys("spawn ", argv[0]) ; return -1 ; }
+  if (!slurpn(fd, storage, 0)) { strerr_warnfu2sys("read output from ", argv[0]) ; return -1 ; }
+  fd_close(fd) ;
+  if (wait_pid(pid, &wstat) == -1)
+  {
+    strerr_warnfu2sys("wait for ", argv[0]) ;
+    return -1 ;
+  }
+  if (WIFSIGNALED(wstat))
+  {
+    char fmt[UINT_FMT] ;
+    fmt[uint_fmt(fmt, WTERMSIG(wstat))] = 0 ;
+     strerr_warnf3x(argv[0], " crashed with signal ", fmt) ;
+    return -1 ;
+  }
+  if (WEXITSTATUS(wstat))
+  {
+    char fmt[UINT_FMT] ;
+    fmt[uint_fmt(fmt, WEXITSTATUS(wstat))] = 0 ;
+    strerr_warnf3x(argv[0], " exited with code ", fmt) ;
+    return (WEXITSTATUS(wstat) < 99) - 1 ;
+  }
+
+ if (!s6rc_nlto0(storage->s + sabase, sabase, storage->len, indices)) goto err ;
+ return 1 ;
+
+ err:
+  if (gwasnull) genalloc_free(size_t, indices) ;
+  else genalloc_setlen(size_t, indices, gabase) ;
+  if (swasnull) stralloc_free(storage) ;
+  else storage->len = sabase ;
+  return -1 ;
+}