]> granicus.if.org Git - strace/blobdiff - kcmp.c
Remove linux/ptp_clock.h
[strace] / kcmp.c
diff --git a/kcmp.c b/kcmp.c
index 962952bd957fd7864a92f00b51a6e236f35ec6a0..ec537a67952bee00e138e39972e469b37b83f7b5 100644 (file)
--- a/kcmp.c
+++ b/kcmp.c
  */
 
 #include "defs.h"
+#include "print_fields.h"
 #include "xlat/kcmp_types.h"
 
+struct strace_kcmp_epoll_slot {
+       uint32_t efd;
+       uint32_t tfd;
+       uint32_t toff;
+};
+
+static void
+printpidfd(struct tcb *tcp, pid_t pid, int fd)
+{
+       /*
+        * XXX We want to use printfd here, but we should figure out which
+        *     process in strace's PID NS is referred to first.
+        */
+       tprintf("%d", fd);
+}
+
+#define PRINT_FIELD_PIDFD(prefix_, where_, field_, tcp_, pid_)         \
+       do {                                                            \
+               STRACE_PRINTF("%s%s=", (prefix_), #field_);             \
+               printpidfd((tcp_), (pid_), (where_).field_);            \
+       } while (0)
+
 SYS_FUNC(kcmp)
 {
        pid_t pid1 = tcp->u_arg[0];
@@ -42,8 +65,31 @@ SYS_FUNC(kcmp)
 
        switch (type) {
                case KCMP_FILE:
-                       tprintf(", %u, %u", (unsigned) idx1, (unsigned) idx2);
+                       tprints(", ");
+                       printpidfd(tcp, pid1, idx1);
+                       tprints(", ");
+                       printpidfd(tcp, pid1, idx2);
+
                        break;
+
+               case KCMP_EPOLL_TFD: {
+                       struct strace_kcmp_epoll_slot slot;
+
+                       tprints(", ");
+                       printpidfd(tcp, pid1, idx1);
+                       tprints(", ");
+
+                       if (umove_or_printaddr(tcp, idx2, &slot))
+                               break;
+
+                       PRINT_FIELD_PIDFD("{",  slot, efd, tcp, pid2);
+                       PRINT_FIELD_PIDFD(", ", slot, tfd, tcp, pid2);
+                       PRINT_FIELD_U(", ", slot, toff);
+                       tprints("}");
+
+                       break;
+               }
+
                case KCMP_FILES:
                case KCMP_FS:
                case KCMP_IO: