Implement fanotify_init and fanotify_mark decoding
* fanotify.c: New file.
* linux/fanotify.h: Likewise.
* Makefile.am (strace_SOURCES): Add fanotify.c.
(EXTRA_DIST): Add linux/fanotify.h.
* defs.h (print_dirfd): New prototype.
* file.c (print_dirfd): Export.
* linux/dummy.h (sys_fanotify_init, sys_fanotify_mark): Remove.
* linux/syscall.h (sys_fanotify_init, sys_fanotify_mark): New
prototypes.
* pathtrace.c (pathtrace_match): Handle sys_fanotify_init and
sys_fanotify_mark.
diff --git a/fanotify.c b/fanotify.c
new file mode 100644
index 0000000..c8a7e37
--- /dev/null
+++ b/fanotify.c
@@ -0,0 +1,86 @@
+#include "defs.h"
+#include <linux/fanotify.h>
+
+static const struct xlat fan_classes[] = {
+ XLAT(FAN_CLASS_NOTIF),
+ XLAT(FAN_CLASS_CONTENT),
+ XLAT(FAN_CLASS_PRE_CONTENT),
+ XLAT_END
+};
+
+static const struct xlat fan_init_flags[] = {
+ XLAT(FAN_CLOEXEC),
+ XLAT(FAN_NONBLOCK),
+ XLAT(FAN_UNLIMITED_QUEUE),
+ XLAT(FAN_UNLIMITED_MARKS),
+ XLAT_END
+};
+
+int
+sys_fanotify_init(struct tcb *tcp)
+{
+ unsigned flags;
+
+ if (exiting(tcp))
+ return 0;
+
+ flags = tcp->u_arg[0];
+ printxval(fan_classes, flags & FAN_ALL_CLASS_BITS, "FAN_CLASS_???");
+ flags &= ~FAN_ALL_CLASS_BITS;
+ if (flags) {
+ tprints("|");
+ printflags(fan_init_flags, flags, "FAN_???");
+ }
+ tprints(", ");
+ tprint_open_modes((unsigned) tcp->u_arg[1]);
+
+ return 0;
+}
+
+static const struct xlat fan_mark_flags[] = {
+ XLAT(FAN_MARK_ADD),
+ XLAT(FAN_MARK_REMOVE),
+ XLAT(FAN_MARK_DONT_FOLLOW),
+ XLAT(FAN_MARK_ONLYDIR),
+ XLAT(FAN_MARK_MOUNT),
+ XLAT(FAN_MARK_IGNORED_MASK),
+ XLAT(FAN_MARK_IGNORED_SURV_MODIFY),
+ XLAT(FAN_MARK_FLUSH),
+ XLAT_END
+};
+
+static const struct xlat fan_event_flags[] = {
+ XLAT(FAN_ACCESS),
+ XLAT(FAN_MODIFY),
+ XLAT(FAN_CLOSE),
+ XLAT(FAN_CLOSE_WRITE),
+ XLAT(FAN_CLOSE_NOWRITE),
+ XLAT(FAN_OPEN),
+ XLAT(FAN_Q_OVERFLOW),
+ XLAT(FAN_OPEN_PERM),
+ XLAT(FAN_ACCESS_PERM),
+ XLAT(FAN_ONDIR),
+ XLAT(FAN_EVENT_ON_CHILD),
+ XLAT_END
+};
+
+int
+sys_fanotify_mark(struct tcb *tcp)
+{
+ if (exiting(tcp))
+ return 0;
+
+ printfd(tcp, tcp->u_arg[0]);
+ tprints(", ");
+ printflags(fan_mark_flags, (unsigned) tcp->u_arg[1], "FAN_MARK_???");
+ tprints(", ");
+ printflags(fan_event_flags, tcp->u_arg[2], "FAN_???");
+ tprints(", ");
+ if ((int) tcp->u_arg[3] == FAN_NOFD)
+ tprints("FAN_NOFD, ");
+ else
+ print_dirfd(tcp, tcp->u_arg[3]);
+ printpath(tcp, tcp->u_arg[4]);
+
+ return 0;
+}