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

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* 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.
This commit is contained in:
Ludovic Courtès 2013-02-15 00:29:28 +01:00
parent 1dee732b81
commit 6956067b04
3 changed files with 239 additions and 1 deletions
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1
Makefile.am
View file

@ -186,6 +186,7 @@ dist_patch_DATA = \
gnu/packages/patches/grub-gets-undeclared.patch \
gnu/packages/patches/guile-1.8-cpp-4.5.patch \
gnu/packages/patches/guile-default-utf8.patch \
gnu/packages/patches/guile-linux-syscalls.patch \
gnu/packages/patches/guile-relocatable.patch \
gnu/packages/patches/libapr-skip-getservbyname-test.patch \
gnu/packages/patches/libevent-dns-tests.patch \

5
gnu/packages/make-bootstrap.scm
View file

@ -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.

234
gnu/packages/patches/guile-linux-syscalls.patch Normal file
View file

@ -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 ()
{