65e386c8ba
This patch includes various bugfixes in the packet location parser. Namely it removes two memory leaks if parsing fails. The parser is correctly quit if an allocation error occurs and it is no longer possible to add duplicates. It removes the possibility to differ between net and host byteorder. This is better done in the actual classifiers as it makes more sense to specify this together with the value to compare against. The patch also extends the API to add new packet locations via rtnl_pktloc_add(). It introduces reference counting, therefore you now have to give back packet locations with rtnl_pktloc_put() after looking them up with rtnl_pktloc_lookup(). But you are allowed to keep using them if the packet location file has been reread. The packet location file now also understands "eth", "ip", and "tcp" for "link", "net", and "transport". A --list option has been added to nl-pktloc-lookup to list all packet location definitions A --u32=VALUE option has been added to let nl-pktloc-lookup print the definition in iproute2's u32 selector style. A manual page has been written for nl-pktloc-lookup. Finally, nl-pktloc-lookup has been made installable.
111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
/*
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* lib/error.c Error Handling
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* Copyright (c) 2008 Thomas Graf <tgraf@suug.ch>
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*/
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#include <netlink-local.h>
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#include <netlink/netlink.h>
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static const char *errmsg[NLE_MAX+1] = {
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[NLE_SUCCESS] = "Success",
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[NLE_FAILURE] = "Unspecific failure",
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[NLE_INTR] = "Interrupted system call",
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[NLE_BAD_SOCK] = "Bad socket",
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[NLE_AGAIN] = "Try again",
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[NLE_NOMEM] = "Out of memory",
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[NLE_EXIST] = "Object exists",
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[NLE_INVAL] = "Invalid input data or parameter",
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[NLE_RANGE] = "Input data out of range",
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[NLE_MSGSIZE] = "Message size not sufficient",
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[NLE_OPNOTSUPP] = "Operation not supported",
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[NLE_AF_NOSUPPORT] = "Address family not supported",
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[NLE_OBJ_NOTFOUND] = "Object not found",
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[NLE_NOATTR] = "Attribute not available",
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[NLE_MISSING_ATTR] = "Missing attribute",
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[NLE_AF_MISMATCH] = "Address family mismatch",
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[NLE_SEQ_MISMATCH] = "Message sequence number mismatch",
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[NLE_MSG_OVERFLOW] = "Kernel reported message overflow",
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[NLE_MSG_TRUNC] = "Kernel reported truncated message",
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[NLE_NOADDR] = "Invalid address for specified address family",
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[NLE_SRCRT_NOSUPPORT] = "Source based routing not supported",
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[NLE_MSG_TOOSHORT] = "Netlink message is too short",
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[NLE_MSGTYPE_NOSUPPORT] = "Netlink message type is not supported",
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[NLE_OBJ_MISMATCH] = "Object type does not match cache",
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[NLE_NOCACHE] = "Unknown or invalid cache type",
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[NLE_BUSY] = "Object busy",
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[NLE_PROTO_MISMATCH] = "Protocol mismatch",
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[NLE_NOACCESS] = "No Access",
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[NLE_PERM] = "Operation not permitted",
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[NLE_PKTLOC_FILE] = "Unable to open packet location file",
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[NLE_PARSE_ERR] = "Unable to parse object",
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};
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/**
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* Return error message for an error code
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* @return error message
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*/
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const char *nl_geterror(int error)
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{
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error = abs(error);
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if (error > NLE_MAX)
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error = NLE_FAILURE;
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return errmsg[error];
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}
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/**
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* Print a libnl error message
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* @arg s error message prefix
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*
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* Prints the error message of the call that failed last.
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*
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* If s is not NULL and *s is not a null byte the argument
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* string is printed, followed by a colon and a blank. Then
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* the error message and a new-line.
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*/
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void nl_perror(int error, const char *s)
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{
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if (s && *s)
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fprintf(stderr, "%s: %s\n", s, nl_geterror(error));
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else
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fprintf(stderr, "%s\n", nl_geterror(error));
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}
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int nl_syserr2nlerr(int error)
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{
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error = abs(error);
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switch (error) {
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case EBADF: return NLE_BAD_SOCK;
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case EADDRINUSE: return NLE_EXIST;
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case EEXIST: return NLE_EXIST;
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case EADDRNOTAVAIL: return NLE_NOADDR;
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case ENOENT: return NLE_OBJ_NOTFOUND;
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case EINTR: return NLE_INTR;
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case EAGAIN: return NLE_AGAIN;
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case ENOTSOCK: return NLE_BAD_SOCK;
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case ENOPROTOOPT: return NLE_INVAL;
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case EFAULT: return NLE_INVAL;
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case EACCES: return NLE_NOACCESS;
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case EINVAL: return NLE_INVAL;
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case ENOBUFS: return NLE_NOMEM;
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case ENOMEM: return NLE_NOMEM;
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case EAFNOSUPPORT: return NLE_AF_NOSUPPORT;
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case EPROTONOSUPPORT: return NLE_PROTO_MISMATCH;
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case EOPNOTSUPP: return NLE_OPNOTSUPP;
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case EPERM: return NLE_PERM;
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case EBUSY: return NLE_BUSY;
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case ERANGE: return NLE_RANGE;
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default: return NLE_FAILURE;
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}
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}
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/** @} */
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