- Implement two new system calls:

	int bindat(int fd, int s, const struct sockaddr *addr, socklen_t addrlen);
	int connectat(int fd, int s, const struct sockaddr *name, socklen_t namelen);

  which allow to bind and connect respectively to a UNIX domain socket with a
  path relative to the directory associated with the given file descriptor 'fd'.

- Add manual pages for the new syscalls.

- Make the new syscalls available for processes in capability mode sandbox.

- Add capability rights CAP_BINDAT and CAP_CONNECTAT that has to be present on
  the directory descriptor for the syscalls to work.

- Update audit(4) to support those two new syscalls and to handle path
  in sockaddr_un structure relative to the given directory descriptor.

- Update procstat(1) to recognize the new capability rights.

- Document the new capability rights in cap_rights_limit(2).

Sponsored by:	The FreeBSD Foundation
Discussed with:	rwatson, jilles, kib, des

1 files changed, 4 insertions, 0 deletions

diff --git a/sys/compat/freebsd32/syscalls.master b/sys/compat/freebsd32/syscalls.master
index 6552d13..655296c 100644
--- a/sys/compat/freebsd32/syscalls.master
+++ b/sys/compat/freebsd32/syscalls.master
@@ -1015,3 +1015,7 @@
 				    uint32_t fcntlrights); }
 537	AUE_CAP_FCNTLS_GET	NOPROTO	{ int cap_fcntls_get(int fd, \
 				    uint32_t *fcntlrightsp); }
+538	AUE_BINDAT	NOPROTO	{ int bindat(int fd, int s, caddr_t name, \
+				    int namelen); }
+539	AUE_CONNECTAT	NOPROTO	{ int connectat(int fd, int s, caddr_t name, \
+				    int namelen); }