gnu: guile-static: Add bindings for low-level Linux syscalls.

* gnu/packages/make-bootstrap.scm (%guile-static): Add
  `guile-linux-syscalls.patch' as an input, and use it.
* gnu/packages/patches/guile-linux-syscalls.patch: New file.
* Makefile.am (dist_patch_DATA): Add it.

2 files changed, 238 insertions, 1 deletions

diff --git a/gnu/packages/make-bootstrap.scm b/gnu/packages/make-bootstrap.scm
index 9e9ba939da..218f5a8e25 100644
--- a/gnu/packages/make-bootstrap.scm
+++ b/gnu/packages/make-bootstrap.scm
@@ -412,6 +412,8 @@
                       ,(search-patch "guile-relocatable.patch"))
                      ("patch/utf8"
                       ,(search-patch "guile-default-utf8.patch"))
+                     ("patch/syscalls"
+                      ,(search-patch "guile-linux-syscalls.patch"))
                      ,@(package-inputs guile-2.0)))
                   (propagated-inputs
                    `(("bdw-gc" ,libgc)
@@ -443,7 +445,8 @@
                      ;; bootstrap.
                      #:patches
                      (list (assoc-ref %build-inputs "patch/relocatable")
-                           (assoc-ref %build-inputs "patch/utf8"))
+                           (assoc-ref %build-inputs "patch/utf8")
+                           (assoc-ref %build-inputs "patch/syscalls"))
 
                      ;; There are uses of `dynamic-link' in
                      ;; {foreign,coverage}.test that don't fly here.
diff --git a/gnu/packages/patches/guile-linux-syscalls.patch b/gnu/packages/patches/guile-linux-syscalls.patch
new file mode 100644
index 0000000000..c0cb0f6d70
--- /dev/null
+++ b/gnu/packages/patches/guile-linux-syscalls.patch
@@ -0,0 +1,234 @@
+This patch adds bindings to Linux syscalls for which glibc has symbols.
+
+diff --git a/libguile/posix.c b/libguile/posix.c
+index 324f21b..ace5211 100644
+--- a/libguile/posix.c
++++ b/libguile/posix.c
+@@ -2286,6 +2286,227 @@ scm_init_popen (void)
+ }
+ #endif
+ 
++
++/* Linux! */
++
++#include <sys/mount.h>
++#include "libguile/foreign.h"
++#include "libguile/bytevectors.h"
++
++SCM_DEFINE (scm_mount, "mount", 3, 2, 0,
++	    (SCM source, SCM target, SCM type, SCM flags, SCM data),
++	    "Mount file system of @var{type} specified by @var{source} "
++	    "on @var{target}.")
++#define FUNC_NAME s_scm_mount
++{
++  int err;
++  char *c_source, *c_target, *c_type;
++  unsigned long c_flags;
++  void *c_data;
++
++  c_source = scm_to_locale_string (source);
++  c_target = scm_to_locale_string (target);
++  c_type = scm_to_locale_string (type);
++  c_flags = SCM_UNBNDP (flags) ? 0 : scm_to_ulong (flags);
++  c_data = SCM_UNBNDP (data) ? NULL : scm_to_pointer (data);
++
++  err = mount (c_source, c_target, c_type, c_flags, c_data);
++  if (err != 0)
++    err = errno;
++
++  free (c_source);
++  free (c_target);
++  free (c_type);
++
++  if (err != 0)
++    {
++      errno = err;
++      SCM_SYSERROR;
++    }
++
++  return SCM_UNSPECIFIED;
++}
++#undef FUNC_NAME
++
++/* Linux's module installation syscall.  See `kernel/module.c' in Linux;
++   the function itself is part of the GNU libc.
++
++   Load the LEN bytes at MODULE as a kernel module, with arguments from
++   ARGS, a space-separated list of options.  */
++extern long init_module (void *module, unsigned long len, const char *args);
++
++SCM_DEFINE (scm_load_linux_module, "load-linux-module", 1, 1, 0,
++	    (SCM data, SCM options),
++	    "Load the Linux kernel module whose contents are in bytevector "
++	    "DATA (the contents of a @code{.ko} file), with the arguments "
++	    "from the OPTIONS string.")
++#define FUNC_NAME s_scm_load_linux_module
++{
++  long err;
++  void *c_data;
++  unsigned long c_len;
++  char *c_options;
++
++  SCM_VALIDATE_BYTEVECTOR (SCM_ARG1, data);
++
++  c_data = SCM_BYTEVECTOR_CONTENTS (data);
++  c_len = SCM_BYTEVECTOR_LENGTH (data);
++  c_options =
++    scm_to_locale_string (SCM_UNBNDP (options) ? scm_nullstr : options);
++
++  err = init_module (c_data, c_len, c_options);
++
++  free (c_options);
++
++  if (err != 0)
++    {
++      /* XXX: `insmod' actually provides better translation of some of
++	 the error codes.  */
++      errno = err;
++      SCM_SYSERROR;
++    }
++
++  return SCM_UNSPECIFIED;
++}
++#undef FUNC_NAME
++
++/* Linux network interfaces.  See <linux/if.h>.  */
++
++#include <linux/if.h>
++#include <linux/sockios.h>
++#include "libguile/socket.h"
++
++SCM_VARIABLE_INIT (flag_IFF_UP, "IFF_UP",
++		   scm_from_int (IFF_UP));
++SCM_VARIABLE_INIT (flag_IFF_BROADCAST, "IFF_BROADCAST",
++		   scm_from_int (IFF_BROADCAST));
++SCM_VARIABLE_INIT (flag_IFF_DEBUG, "IFF_DEBUG",
++		   scm_from_int (IFF_DEBUG));
++SCM_VARIABLE_INIT (flag_IFF_LOOPBACK, "IFF_LOOPBACK",
++		   scm_from_int (IFF_LOOPBACK));
++SCM_VARIABLE_INIT (flag_IFF_POINTOPOINT, "IFF_POINTOPOINT",
++		   scm_from_int (IFF_POINTOPOINT));
++SCM_VARIABLE_INIT (flag_IFF_NOTRAILERS, "IFF_NOTRAILERS",
++		   scm_from_int (IFF_NOTRAILERS));
++SCM_VARIABLE_INIT (flag_IFF_RUNNING, "IFF_RUNNING",
++		   scm_from_int (IFF_RUNNING));
++SCM_VARIABLE_INIT (flag_IFF_NOARP, "IFF_NOARP",
++		   scm_from_int (IFF_NOARP));
++SCM_VARIABLE_INIT (flag_IFF_PROMISC, "IFF_PROMISC",
++		   scm_from_int (IFF_PROMISC));
++SCM_VARIABLE_INIT (flag_IFF_ALLMULTI, "IFF_ALLMULTI",
++		   scm_from_int (IFF_ALLMULTI));
++
++SCM_DEFINE (scm_set_network_interface_address, "set-network-interface-address",
++	    3, 0, 0,
++	    (SCM socket, SCM name, SCM address),
++	    "Configure network interface @var{name}.")
++#define FUNC_NAME s_scm_set_network_interface_address
++{
++  char *c_name;
++  struct ifreq ifr;
++  struct sockaddr *c_address;
++  size_t sa_len;
++  int fd, err;
++
++  socket = SCM_COERCE_OUTPORT (socket);
++  SCM_VALIDATE_OPFPORT (1, socket);
++  fd = SCM_FPORT_FDES (socket);
++
++  memset (&ifr, 0, sizeof ifr);
++  c_name = scm_to_locale_string (name);
++  c_address = scm_to_sockaddr (address, &sa_len);
++
++  strncpy (ifr.ifr_name, c_name, sizeof ifr.ifr_name - 1);
++  memcpy (&ifr.ifr_addr, c_address, sa_len);
++
++  err = ioctl (fd, SIOCSIFADDR, &ifr);
++  if (err != 0)
++    err = errno;
++
++  free (c_name);
++  free (c_address);
++
++  if (err != 0)
++    {
++      errno = err;
++      SCM_SYSERROR;
++    }
++
++  return SCM_UNSPECIFIED;
++}
++#undef FUNC_NAME
++
++SCM_DEFINE (scm_set_network_interface_flags, "set-network-interface-flags",
++	    3, 0, 0,
++	    (SCM socket, SCM name, SCM flags),
++	    "Change the flags of network interface @var{name} to "
++	    "@var{flags}.")
++#define FUNC_NAME s_scm_set_network_interface_flags
++{
++  struct ifreq ifr;
++  char *c_name;
++  int fd, err;
++
++  socket = SCM_COERCE_OUTPORT (socket);
++  SCM_VALIDATE_OPFPORT (1, socket);
++  fd = SCM_FPORT_FDES (socket);
++
++  memset (&ifr, 0, sizeof ifr);
++  c_name = scm_to_locale_string (name);
++  strncpy (ifr.ifr_name, c_name, sizeof ifr.ifr_name - 1);
++  ifr.ifr_flags = scm_to_short (flags);
++
++  err = ioctl (fd, SIOCSIFFLAGS, &ifr);
++  if (err != 0)
++    err = errno;
++
++  free (c_name);
++
++  if (err != 0)
++    {
++      errno = err;
++      SCM_SYSERROR;
++    }
++
++  return SCM_UNSPECIFIED;
++}
++#undef FUNC_NAME
++
++SCM_DEFINE (scm_network_interface_flags, "network-interface-flags",
++	    2, 0, 0,
++	    (SCM socket, SCM name),
++	    "Return the flags of network interface @var{name}.")
++#define FUNC_NAME s_scm_network_interface_flags
++{
++  struct ifreq ifr;
++  char *c_name;
++  int fd, err;
++
++  socket = SCM_COERCE_OUTPORT (socket);
++  SCM_VALIDATE_OPFPORT (1, socket);
++  fd = SCM_FPORT_FDES (socket);
++
++  memset (&ifr, 0, sizeof ifr);
++  c_name = scm_to_locale_string (name);
++  strncpy (ifr.ifr_name, c_name, sizeof ifr.ifr_name - 1);
++
++  err = ioctl (fd, SIOCGIFFLAGS, &ifr);
++  if (err != 0)
++    err = errno;
++
++  free (c_name);
++
++  if (err != 0)
++    {
++      errno = err;
++      SCM_SYSERROR;
++    }
++
++  return scm_from_short (ifr.ifr_flags);
++}
++#undef FUNC_NAME
++
+ void
+ scm_init_posix ()
+ {