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-rw-r--r--src/errcode.c158
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diff --git a/src/errcode.c b/src/errcode.c
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+++ b/src/errcode.c
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+/* Copyright 2007-2010 Jozsef Kadlecsik (kadlec@blackhole.kfki.hu)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <assert.h> /* assert */
+#include <errno.h> /* errno */
+#include <string.h> /* strerror */
+
+#include <libipset/data.h> /* ipset_data_get */
+#include <libipset/session.h> /* ipset_err */
+#include <libipset/types.h> /* struct ipset_type */
+#include <libipset/utils.h> /* STRNEQ */
+#include <libipset/errcode.h> /* prototypes */
+#include <libipset/linux_ip_set_bitmap.h> /* bitmap specific errcodes */
+#include <libipset/linux_ip_set_hash.h> /* hash specific errcodes */
+
+/* Core kernel error codes */
+static const struct ipset_errcode_table core_errcode_table[] = {
+ /* Generic error codes */
+ { EEXIST, 0,
+ "The set with the given name does not exist" },
+ { IPSET_ERR_PROTOCOL, 0,
+ "Kernel error received: ipset protocol error" },
+
+ /* CREATE specific error codes */
+ { EEXIST, IPSET_CMD_CREATE,
+ "Set cannot be created: set with the same name already exists" },
+ { IPSET_ERR_FIND_TYPE, 0,
+ "Kernel error received: set type does not supported" },
+ { IPSET_ERR_MAX_SETS, 0,
+ "Kernel error received: maximal number of sets reached, cannot create more." },
+ { IPSET_ERR_INVALID_NETMASK, 0,
+ "The value of the netmask parameter is invalid" },
+ { IPSET_ERR_INVALID_FAMILY, 0,
+ "The protocol family not supported by the set type" },
+
+ /* DESTROY specific error codes */
+ { IPSET_ERR_BUSY, IPSET_CMD_DESTROY,
+ "Set cannot be destroyed: it is in use by a kernel component" },
+
+ /* FLUSH specific error codes */
+
+ /* RENAME specific error codes */
+ { IPSET_ERR_EXIST_SETNAME2, IPSET_CMD_RENAME,
+ "Set cannot be renamed: a set with the new name already exists" },
+
+ /* SWAP specific error codes */
+ { IPSET_ERR_EXIST_SETNAME2, IPSET_CMD_SWAP,
+ "Sets cannot be swapped: the second set does not exist" },
+ { IPSET_ERR_TYPE_MISMATCH, IPSET_CMD_SWAP,
+ "The sets cannot be swapped: they type does not match" },
+
+ /* LIST/SAVE specific error codes */
+
+ /* Generic (CADT) error codes */
+ { IPSET_ERR_INVALID_CIDR, 0,
+ "The value of the CIDR parameter of the IP address is invalid" },
+ { IPSET_ERR_TIMEOUT, 0,
+ "Timeout cannot be used: set was created without timeout support" },
+
+ /* ADD specific error codes */
+ { IPSET_ERR_EXIST, IPSET_CMD_ADD,
+ "Element cannot be added to the set: it's already added" },
+
+ /* DEL specific error codes */
+ { IPSET_ERR_EXIST, IPSET_CMD_DEL,
+ "Element cannot be deleted from the set: it's not added" },
+
+ /* TEST specific error codes */
+
+ /* HEADER specific error codes */
+
+ /* TYPE specific error codes */
+ { EEXIST, IPSET_CMD_TYPE,
+ "Kernel error received: set type does not supported" },
+
+ /* PROTOCOL specific error codes */
+
+ { },
+};
+
+/* Bitmap type-specific error codes */
+static const struct ipset_errcode_table bitmap_errcode_table[] = {
+ /* Generic (CADT) error codes */
+ { IPSET_ERR_BITMAP_RANGE, 0,
+ "Element is out of the range of the set" },
+ { IPSET_ERR_BITMAP_RANGE_SIZE, IPSET_CMD_CREATE,
+ "The range you specified exceeds the size limit of the set type" },
+ { },
+};
+
+/* Hash type-specific error codes */
+static const struct ipset_errcode_table hash_errcode_table[] = {
+ /* Generic (CADT) error codes */
+ { IPSET_ERR_HASH_FULL, 0,
+ "Hash is full, cannot add more elements" },
+ { IPSET_ERR_HASH_ELEM, 0,
+ "Null-valued element, cannot be stored in a hash type of set" },
+ { },
+};
+
+#define MATCH_TYPENAME(a, b) STRNEQ(a, b, strlen(b))
+
+/**
+ * ipset_errcode - interpret an error code
+ * @session: session structure
+ * @errcode: errcode
+ *
+ * Find the error code and print the appropriate
+ * error message.
+ *
+ * Returns -1.
+ */
+int
+ipset_errcode(struct ipset_session *session, enum ipset_cmd cmd, int errcode)
+{
+ const struct ipset_errcode_table *table = core_errcode_table;
+ int i, generic;
+
+ if (errcode >= IPSET_ERR_TYPE_SPECIFIC) {
+ const struct ipset_type *type;
+
+ type = ipset_session_data_get(session, IPSET_OPT_TYPE);
+ if (type) {
+ if (MATCH_TYPENAME(type->name, "bitmap:"))
+ table = bitmap_errcode_table;
+ if (MATCH_TYPENAME(type->name, "hash:"))
+ table = hash_errcode_table;
+ }
+ }
+
+retry:
+ for (i = 0, generic = -1; table[i].errcode; i++) {
+ if (table[i].errcode == errcode
+ && (table[i].cmd == cmd || table[i].cmd == 0)) {
+ if (table[i].cmd == 0) {
+ generic = i;
+ continue;
+ }
+ return ipset_err(session, table[i].message);
+ }
+ }
+ if (generic != -1)
+ return ipset_err(session, table[generic].message);
+ /* Fall back to the core table */
+ if (table != core_errcode_table) {
+ table = core_errcode_table;
+ goto retry;
+ }
+ if (errcode < IPSET_ERR_PRIVATE)
+ return ipset_err(session, "Kernel error received: %s",
+ strerror(errcode));
+ else
+ return ipset_err(session,
+ "Undecoded error %u received from kernel", errcode);
+}