--- /dev/null
+/* libguestfs - the guestfsd daemon
+ * Copyright (C) 2009 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <config.h>
+
+#define _GNU_SOURCE // for strchrnul
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <ctype.h>
+
+#include "../src/guestfs_protocol.h"
+#include "daemon.h"
+#include "actions.h"
+
+char **
+do_tune2fs_l (const char *device)
+{
+ int r;
+ char *out, *err;
+ char *p, *pend, *colon;
+ char **ret = NULL;
+ int size = 0, alloc = 0;
+
+ IS_DEVICE (device, NULL);
+
+ r = command (&out, &err, "/sbin/tune2fs", "-l", device, NULL);
+ if (r == -1) {
+ reply_with_error ("tune2fs: %s", err);
+ free (err);
+ free (out);
+ return NULL;
+ }
+ free (err);
+
+ p = out;
+
+ /* Discard the first line if it contains "tune2fs ...". */
+ if (strncmp (p, "tune2fs ", 8) == 0) {
+ p = strchr (p, '\n');
+ if (p) p++;
+ else {
+ reply_with_error ("tune2fs: truncated output");
+ free (out);
+ return NULL;
+ }
+ }
+
+ /* Read the lines and split into "key: value". */
+ while (*p) {
+ pend = strchrnul (p, '\n');
+ if (*pend == '\n') {
+ *pend = '\0';
+ pend++;
+ }
+
+ if (!*p) continue;
+
+ colon = strchr (p, ':');
+ if (colon) {
+ *colon = '\0';
+
+ do { colon++; } while (*colon && isspace (*colon));
+
+ if (add_string (&ret, &size, &alloc, p) == -1) {
+ free (out);
+ return NULL;
+ }
+ if (strcmp (colon, "<none>") == 0 ||
+ strcmp (colon, "<not available>") == 0 ||
+ strcmp (colon, "(none)") == 0) {
+ if (add_string (&ret, &size, &alloc, "") == -1) {
+ free (out);
+ return NULL;
+ }
+ } else {
+ if (add_string (&ret, &size, &alloc, colon) == -1) {
+ free (out);
+ return NULL;
+ }
+ }
+ }
+ else {
+ if (add_string (&ret, &size, &alloc, p) == -1) {
+ free (out);
+ return NULL;
+ }
+ if (add_string (&ret, &size, &alloc, "") == -1) {
+ free (out);
+ return NULL;
+ }
+ }
+
+ p = pend;
+ }
+
+ free (out);
+
+ if (add_string (&ret, &size, &alloc, NULL) == -1)
+ return NULL;
+
+ return ret;
+}
(* Stat buffers. *)
| RStat of string
| RStatVFS of string
+ (* Key-value pairs of untyped strings. Turns into a hashtable or
+ * dictionary in languages which support it. DON'T use this as a
+ * general "bucket" for results. Prefer a stronger typed return
+ * value if one is available, or write a custom struct. Don't use
+ * this if the list could potentially be very long, since it is
+ * inefficient. Keys should be unique. NULLs are not permitted.
+ *)
+ | RHashtable of string
+
and args = argt list (* Function parameters, guestfs handle is implicit. *)
(* Note in future we should allow a "variable args" parameter as
This is the same as the C<statvfs(2)> system call.");
+ ("tune2fs_l", (RHashtable "superblock", [String "device"]), 55, [],
+ [], (* XXX test *)
+ "get ext2/ext3 superblock details",
+ "\
+This returns the contents of the ext2 or ext3 filesystem superblock
+on C<device>.
+
+It is the same as running C<tune2fs -l device>. See L<tune2fs(8)>
+manpage for more details. The list of fields returned isn't
+clearly defined, and depends on both the version of C<tune2fs>
+that libguestfs was built against, and the filesystem itself.");
+
]
let all_functions = non_daemon_functions @ daemon_functions
| RErr -> ()
| RInt n | RBool n | RConstString n | RString n
| RStringList n | RPVList n | RVGList n | RLVList n
- | RStat n | RStatVFS n ->
+ | RStat n | RStatVFS n
+ | RHashtable n ->
check_arg_ret_name n
| RIntBool (n,m) ->
check_arg_ret_name n;
(see L<statvfs(2)> and E<lt>guestfs-structs.hE<gt>),
or NULL if there was an error.
I<The caller must call C<free> after use>.\n\n"
+ | RHashtable _ ->
+ pr "This function returns a NULL-terminated array of
+strings, or NULL if there was an error.
+The array of strings will always have length C<2n+1>, where
+C<n> keys and values alternate, followed by the trailing NULL entry.
+I<The caller must free the strings and the array after use>.\n\n"
);
if List.mem ProtocolLimitWarning flags then
pr "%s\n\n" protocol_limit_warning;
| RStat n ->
pr "struct %s_ret {\n" name;
pr " guestfs_int_stat %s;\n" n;
- pr "};\n\n";
+ pr "};\n\n"
| RStatVFS n ->
pr "struct %s_ret {\n" name;
pr " guestfs_int_statvfs %s;\n" n;
- pr "};\n\n";
+ pr "};\n\n"
+ | RHashtable n ->
+ pr "struct %s_ret {\n" name;
+ pr " str %s<>;\n" n;
+ pr "};\n\n"
);
) daemon_functions;
| RBool _ | RString _ | RStringList _
| RIntBool _
| RPVList _ | RVGList _ | RLVList _
- | RStat _ | RStatVFS _ ->
+ | RStat _ | RStatVFS _
+ | RHashtable _ ->
pr " struct %s_ret ret;\n" name
);
pr "};\n\n";
| RBool _ | RString _ | RStringList _
| RIntBool _
| RPVList _ | RVGList _ | RLVList _
- | RStat _ | RStatVFS _ ->
+ | RStat _ | RStatVFS _
+ | RHashtable _ ->
pr " if (!xdr_%s_ret (xdr, &rv->ret)) {\n" name;
pr " error (g, \"%s: failed to parse reply\");\n" name;
pr " return;\n";
failwithf "RConstString cannot be returned from a daemon function"
| RString _ | RStringList _ | RIntBool _
| RPVList _ | RVGList _ | RLVList _
- | RStat _ | RStatVFS _ ->
+ | RStat _ | RStatVFS _
+ | RHashtable _ ->
"NULL" in
pr "{\n";
failwithf "RConstString cannot be returned from a daemon function"
| RString n ->
pr " return rv.ret.%s; /* caller will free */\n" n
- | RStringList n ->
+ | RStringList n | RHashtable n ->
pr " /* caller will free this, but we need to add a NULL entry */\n";
pr " rv.ret.%s.%s_val =" n n;
pr " safe_realloc (g, rv.ret.%s.%s_val,\n" n n;
| RIntBool _ ->
pr " /* caller with free this */\n";
pr " return safe_memdup (g, &rv.ret, sizeof (rv.ret));\n"
- | RPVList n ->
- pr " /* caller will free this */\n";
- pr " return safe_memdup (g, &rv.ret.%s, sizeof (rv.ret.%s));\n" n n
- | RVGList n ->
- pr " /* caller will free this */\n";
- pr " return safe_memdup (g, &rv.ret.%s, sizeof (rv.ret.%s));\n" n n
- | RLVList n ->
- pr " /* caller will free this */\n";
- pr " return safe_memdup (g, &rv.ret.%s, sizeof (rv.ret.%s));\n" n n
- | RStat n ->
- pr " /* caller will free this */\n";
- pr " return safe_memdup (g, &rv.ret.%s, sizeof (rv.ret.%s));\n" n n
- | RStatVFS n ->
+ | RPVList n | RVGList n | RLVList n
+ | RStat n | RStatVFS n ->
pr " /* caller will free this */\n";
pr " return safe_memdup (g, &rv.ret.%s, sizeof (rv.ret.%s));\n" n n
);
| RConstString _ ->
failwithf "RConstString cannot be returned from a daemon function"
| RString _ -> pr " char *r;\n"; "NULL"
- | RStringList _ -> pr " char **r;\n"; "NULL"
+ | RStringList _ | RHashtable _ -> pr " char **r;\n"; "NULL"
| RIntBool _ -> pr " guestfs_%s_ret *r;\n" name; "NULL"
| RPVList _ -> pr " guestfs_lvm_int_pv_list *r;\n"; "NULL"
| RVGList _ -> pr " guestfs_lvm_int_vg_list *r;\n"; "NULL"
pr " ret.%s = r;\n" n;
pr " reply ((xdrproc_t) &xdr_guestfs_%s_ret, (char *) &ret);\n" name;
pr " free (r);\n"
- | RStringList n ->
+ | RStringList n | RHashtable n ->
pr " struct guestfs_%s_ret ret;\n" name;
pr " ret.%s.%s_len = count_strings (r);\n" n n;
pr " ret.%s.%s_val = r;\n" n n;
| RIntBool _ ->
pr " reply ((xdrproc_t) xdr_guestfs_%s_ret, (char *) r);\n" name;
pr " xdr_free ((xdrproc_t) xdr_guestfs_%s_ret, (char *) r);\n" name
- | RPVList n | RVGList n | RLVList n | RStat n | RStatVFS n ->
+ | RPVList n | RVGList n | RLVList n
+ | RStat n | RStatVFS n ->
pr " struct guestfs_%s_ret ret;\n" name;
pr " ret.%s = *r;\n" n;
pr " reply ((xdrproc_t) xdr_guestfs_%s_ret, (char *) &ret);\n" name;
printf (\"\\t%%s\\n\", argv[argc]);
}
+static void print_table (char * const * const argv)
+{
+ int i;
+
+ for (i = 0; argv[i] != NULL; i += 2)
+ printf (\"%%s: %%s\\n\", argv[i], argv[i+1]);
+}
+
";
let test_names =
| RErr | RInt _ | RBool _ -> pr " int r;\n"; "-1"
| RConstString _ -> pr " const char *r;\n"; "NULL"
| RString _ -> pr " char *r;\n"; "NULL"
- | RStringList _ ->
+ | RStringList _ | RHashtable _ ->
pr " char **r;\n";
pr " int i;\n";
"NULL"
(match fst style with
| RErr | RInt _ | RBool _ | RConstString _ -> ()
| RString _ -> pr " free (r);\n"
- | RStringList _ ->
+ | RStringList _ | RHashtable _ ->
pr " for (i = 0; r[i] != NULL; ++i)\n";
pr " free (r[i]);\n";
pr " free (r);\n"
| RBool _ -> pr " int r;\n"
| RConstString _ -> pr " const char *r;\n"
| RString _ -> pr " char *r;\n"
- | RStringList _ -> pr " char **r;\n"
+ | RStringList _ | RHashtable _ -> pr " char **r;\n"
| RIntBool _ -> pr " struct guestfs_int_bool *r;\n"
| RPVList _ -> pr " struct guestfs_lvm_pv_list *r;\n"
| RVGList _ -> pr " struct guestfs_lvm_vg_list *r;\n"
pr " print_statvfs (r);\n";
pr " free (r);\n";
pr " return 0;\n"
+ | RHashtable _ ->
+ pr " if (r == NULL) return -1;\n";
+ pr " print_table (r);\n";
+ pr " free_strings (r);\n";
+ pr " return 0;\n"
);
pr "}\n";
pr "\n"
| RBool _ -> pr "int "
| RConstString _ -> pr "const char *"
| RString _ -> pr "char *"
- | RStringList _ -> pr "char **"
+ | RStringList _ | RHashtable _ -> pr "char **"
| RIntBool _ ->
if not in_daemon then pr "struct guestfs_int_bool *"
else pr "guestfs_%s_ret *" name
and generate_ocaml_c () =
generate_header CStyle LGPLv2;
- pr "#include <stdio.h>\n";
- pr "#include <stdlib.h>\n";
- pr "#include <string.h>\n";
- pr "\n";
- pr "#include <caml/config.h>\n";
- pr "#include <caml/alloc.h>\n";
- pr "#include <caml/callback.h>\n";
- pr "#include <caml/fail.h>\n";
- pr "#include <caml/memory.h>\n";
- pr "#include <caml/mlvalues.h>\n";
- pr "#include <caml/signals.h>\n";
- pr "\n";
- pr "#include <guestfs.h>\n";
- pr "\n";
- pr "#include \"guestfs_c.h\"\n";
- pr "\n";
+ pr "\
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <caml/config.h>
+#include <caml/alloc.h>
+#include <caml/callback.h>
+#include <caml/fail.h>
+#include <caml/memory.h>
+#include <caml/mlvalues.h>
+#include <caml/signals.h>
+
+#include <guestfs.h>
+
+#include \"guestfs_c.h\"
+
+/* Copy a hashtable of string pairs into an assoc-list. We return
+ * the list in reverse order, but hashtables aren't supposed to be
+ * ordered anyway.
+ */
+static CAMLprim value
+copy_table (char * const * argv)
+{
+ CAMLparam0 ();
+ CAMLlocal5 (rv, pairv, kv, vv, cons);
+ int i;
+
+ rv = Val_int (0);
+ for (i = 0; argv[i] != NULL; i += 2) {
+ kv = caml_copy_string (argv[i]);
+ vv = caml_copy_string (argv[i+1]);
+ pairv = caml_alloc (2, 0);
+ Store_field (pairv, 0, kv);
+ Store_field (pairv, 1, vv);
+ cons = caml_alloc (2, 0);
+ Store_field (cons, 1, rv);
+ rv = cons;
+ Store_field (cons, 0, pairv);
+ }
+
+ CAMLreturn (rv);
+}
+
+";
(* LVM struct copy functions. *)
List.iter (
| RStat _ ->
pr " struct guestfs_stat *r;\n"; "NULL"
| RStatVFS _ ->
- pr " struct guestfs_statvfs *r;\n"; "NULL" in
+ pr " struct guestfs_statvfs *r;\n"; "NULL"
+ | RHashtable _ ->
+ pr " char **r;\n";
+ "NULL" in
pr "\n";
pr " caml_enter_blocking_section ();\n";
| RStatVFS _ ->
pr " rv = copy_statvfs (r);\n";
pr " free (r);\n";
+ | RHashtable _ ->
+ pr " rv = copy_table (r);\n";
+ pr " free (r);\n";
);
pr " CAMLreturn (rv);\n";
| RLVList _ -> pr "lvm_lv array"
| RStat _ -> pr "stat"
| RStatVFS _ -> pr "statvfs"
+ | RHashtable _ -> pr "(string * string) list"
);
if is_external then (
pr " = ";
| RStringList _
| RIntBool _
| RPVList _ | RVGList _ | RLVList _
- | RStat _ | RStatVFS _ ->
+ | RStat _ | RStatVFS _
+ | RHashtable _ ->
pr "void\n" (* all lists returned implictly on the stack *)
);
(* Call and arguments. *)
pr " free (%s);\n" n;
pr " OUTPUT:\n";
pr " RETVAL\n"
- | RStringList n ->
+ | RStringList n | RHashtable n ->
pr "PREINIT:\n";
pr " char **%s;\n" n;
pr " int i, n;\n";
| RVGList n
| RLVList n -> pr "@%s = " n
| RStat n
- | RStatVFS n -> pr "%%%s = " n
+ | RStatVFS n
+ | RHashtable n -> pr "%%%s = " n
);
pr "$h->%s (" name;
let comma = ref false in
return list;
}
+static PyObject *
+put_table (char * const * const argv)
+{
+ PyObject *list, *item;
+ int argc, i;
+
+ for (argc = 0; argv[argc] != NULL; ++argc)
+ ;
+
+ list = PyList_New (argc >> 1);
+ for (i = 0; i < argc; i += 2) {
+ PyObject *item;
+ item = PyTuple_New (2);
+ PyTuple_SetItem (item, 0, PyString_FromString (argv[i]));
+ PyTuple_SetItem (item, 1, PyString_FromString (argv[i+1]));
+ PyList_SetItem (list, i >> 1, item);
+ }
+
+ return list;
+}
+
static void
free_strings (char **argv)
{
| RErr | RInt _ | RBool _ -> pr " int r;\n"; "-1"
| RConstString _ -> pr " const char *r;\n"; "NULL"
| RString _ -> pr " char *r;\n"; "NULL"
- | RStringList _ -> pr " char **r;\n"; "NULL"
+ | RStringList _ | RHashtable _ -> pr " char **r;\n"; "NULL"
| RIntBool _ -> pr " struct guestfs_int_bool *r;\n"; "NULL"
| RPVList n -> pr " struct guestfs_lvm_pv_list *r;\n"; "NULL"
| RVGList n -> pr " struct guestfs_lvm_vg_list *r;\n"; "NULL"
| RStatVFS n ->
pr " py_r = put_statvfs (r);\n";
pr " free (r);\n"
+ | RHashtable n ->
+ pr " py_r = put_table (r);\n";
+ pr " free (r);\n"
);
pr " return py_r;\n";
git.annexia.org / libguestfs.git / commitdiff