initial commit with rc for skalibs-2.0.0.0

1 files changed, 33 insertions, 0 deletions

diff --git a/src/libstddjb/ipc_recv.c b/src/libstddjb/ipc_recv.c
new file mode 100644
index 0000000..80806e7
--- /dev/null
+++ b/src/libstddjb/ipc_recv.c
@@ -0,0 +1,33 @@
+/* ISC license. */
+
+#include <skalibs/nonposix.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/error.h>
+#include <skalibs/webipc.h>
+
+int ipc_recv (int fd, char *s, unsigned int len, char *path)
+{
+  struct sockaddr_un sa ;
+  socklen_t total = sizeof sa ;
+  char tmp[len] ;
+  register int r ;
+  do r = recvfrom(fd, tmp, len, 0, (struct sockaddr *)&sa, &total) ;
+  while ((r == -1) && (errno == EINTR)) ;
+  if (r < 0) return r ;
+  if (sa.sun_family != AF_UNIX) return (errno = EPROTO, -1) ;
+  if (path)
+  {
+    if (total == sizeof(sa_family_t)) path[0] = 0 ;
+    else
+    {
+      unsigned int l = str_len(sa.sun_path) ;
+      if (l > IPCPATH_MAX) return (errno = EPROTO, -1) ;
+      byte_copy(path, l+1, sa.sun_path) ;
+    }
+  }
+  byte_copy(s, r, tmp) ;
+  return r ;
+}