429 lines
14 KiB
C
429 lines
14 KiB
C
/*
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* Copyright (c) 2007 Vreixo Formoso
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*
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* This file is part of the libisofs project; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. See COPYING file for details.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include "libiso_msgs.h"
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#include "libisofs.h"
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#include "messages.h"
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/*
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* error codes are 32 bit numbers, that follow the following conventions:
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*
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* bit 31 (MSB) -> 1 (to make the value always negative)
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* bits 30-24 -> Encoded severity (Use ISO_ERR_SEV to translate an error code
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* to a LIBISO_MSGS_SEV_* constant)
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* = 0x10 -> DEBUG
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* = 0x20 -> UPDATE
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* = 0x30 -> NOTE
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* = 0x40 -> HINT
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* = 0x50 -> WARNING
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* = 0x60 -> SORRY
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* = 0x64 -> MISHAP
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* = 0x68 -> FAILURE
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* = 0x70 -> FATAL
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* = 0x71 -> ABORT
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* bits 23-20 -> Encoded priority (Use ISO_ERR_PRIO to translate an error code
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* to a LIBISO_MSGS_PRIO_* constant)
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* = 0x0 -> ZERO
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* = 0x1 -> LOW
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* = 0x2 -> MEDIUM
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* = 0x3 -> HIGH
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* bits 19-16 -> Reserved for future usage (maybe message ranges)
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* bits 15-0 -> Error code
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*/
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#define ISO_ERR_SEV(e) (e & 0x7F000000)
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#define ISO_ERR_PRIO(e) ((e & 0x00F00000) << 8)
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#define ISO_ERR_CODE(e) ((e & 0x0000FFFF) | 0x00030000)
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int iso_message_id = LIBISO_MSGS_ORIGIN_IMAGE_BASE;
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/**
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* Threshold for aborting.
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*/
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int abort_threshold = LIBISO_MSGS_SEV_FAILURE;
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#define MAX_MSG_LEN 4096
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struct libiso_msgs *libiso_msgr = NULL;
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int iso_init()
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{
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if (libiso_msgr == NULL) {
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if (libiso_msgs_new(&libiso_msgr, 0) <= 0)
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return ISO_FATAL_ERROR;
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}
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libiso_msgs_set_severities(libiso_msgr, LIBISO_MSGS_SEV_NEVER,
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LIBISO_MSGS_SEV_FATAL, "libisofs: ", 0);
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return 1;
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}
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void iso_finish()
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{
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libiso_msgs_destroy(&libiso_msgr, 0);
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}
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int iso_set_abort_severity(char *severity)
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{
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int ret, sevno;
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ret = libiso_msgs__text_to_sev(severity, &sevno, 0);
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if (ret <= 0)
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return ISO_WRONG_ARG_VALUE;
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if (sevno > LIBISO_MSGS_SEV_FAILURE || sevno < LIBISO_MSGS_SEV_NOTE)
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return ISO_WRONG_ARG_VALUE;
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ret = abort_threshold;
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abort_threshold = sevno;
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return ret;
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}
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void iso_msg_debug(int imgid, const char *fmt, ...)
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{
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char msg[MAX_MSG_LEN];
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va_list ap;
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va_start(ap, fmt);
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vsnprintf(msg, MAX_MSG_LEN, fmt, ap);
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va_end(ap);
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libiso_msgs_submit(libiso_msgr, imgid, 0x00000002, LIBISO_MSGS_SEV_DEBUG,
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LIBISO_MSGS_PRIO_ZERO, msg, 0, 0);
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}
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const char *iso_error_to_msg(int errcode)
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{
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switch(errcode) {
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case ISO_CANCELED:
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return "Operation canceled";
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case ISO_FATAL_ERROR:
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return "Unknown or unexpected fatal error";
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case ISO_ERROR:
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return "Unknown or unexpected error";
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case ISO_ASSERT_FAILURE:
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return "Internal programming error. Please report this bug";
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case ISO_NULL_POINTER:
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return "NULL pointer as value for an arg. that doesn't allow NULL";
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case ISO_OUT_OF_MEM:
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return "Memory allocation error";
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case ISO_INTERRUPTED:
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return "Interrupted by a signal";
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case ISO_WRONG_ARG_VALUE:
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return "Invalid parameter value";
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case ISO_THREAD_ERROR:
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return "Can't create a needed thread";
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case ISO_WRITE_ERROR:
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return "Write error";
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case ISO_BUF_READ_ERROR:
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return "Buffer read error";
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case ISO_NODE_ALREADY_ADDED:
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return "Trying to add to a dir a node already added to a dir";
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case ISO_NODE_NAME_NOT_UNIQUE:
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return "Node with same name already exists";
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case ISO_NODE_NOT_ADDED_TO_DIR:
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return "Trying to remove a node that was not added to dir";
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case ISO_NODE_DOESNT_EXIST:
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return "A requested node does not exist";
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case ISO_IMAGE_ALREADY_BOOTABLE:
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return "Try to set the boot image of an already bootable image";
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case ISO_BOOT_IMAGE_NOT_VALID:
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return "Trying to use an invalid file as boot image";
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case ISO_FILE_ERROR:
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return "Error on file operation";
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case ISO_FILE_ALREADY_OPENED:
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return "Trying to open an already opened file";
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case ISO_FILE_ACCESS_DENIED:
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return "Access to file is not allowed";
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case ISO_FILE_BAD_PATH:
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return "Incorrect path to file";
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case ISO_FILE_DOESNT_EXIST:
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return "The file does not exist in the filesystem";
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case ISO_FILE_NOT_OPENED:
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return "Trying to read or close a file not opened";
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case ISO_FILE_IS_DIR:
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return "Directory used where no dir is expected";
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case ISO_FILE_READ_ERROR:
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return "Read error";
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case ISO_FILE_IS_NOT_DIR:
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return "Not dir used where a dir is expected";
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case ISO_FILE_IS_NOT_SYMLINK:
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return "Not symlink used where a symlink is expected";
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case ISO_FILE_SEEK_ERROR:
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return "Can't seek to specified location";
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case ISO_FILE_IGNORED:
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return "File not supported in ECMA-119 tree and thus ignored";
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case ISO_FILE_TOO_BIG:
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return "A file is bigger than supported by used standard";
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case ISO_FILE_CANT_WRITE:
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return "File read error during image creation";
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case ISO_FILENAME_WRONG_CHARSET:
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return "Can't convert filename to requested charset";
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case ISO_FILE_CANT_ADD:
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return "File can't be added to the tree";
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case ISO_FILE_IMGPATH_WRONG:
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return "File path break specification constraints and will be ignored";
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case ISO_CHARSET_CONV_ERROR:
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return "Charset conversion error";
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case ISO_MANGLE_TOO_MUCH_FILES:
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return "Too much files to mangle, can't guarantee unique file names";
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case ISO_WRONG_PVD:
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return "Wrong or damaged Primary Volume Descriptor";
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case ISO_WRONG_RR:
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return "Wrong or damaged RR entry";
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case ISO_UNSUPPORTED_RR:
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return "Unsupported RR feature";
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case ISO_WRONG_ECMA119:
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return "Wrong or damaged ECMA-119";
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case ISO_UNSUPPORTED_ECMA119:
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return "Unsupported ECMA-119 feature";
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case ISO_WRONG_EL_TORITO:
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return "Wrong or damaged El-Torito catalog";
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case ISO_UNSUPPORTED_EL_TORITO:
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return "Unsupported El-Torito feature";
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case ISO_ISOLINUX_CANT_PATCH:
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return "Can't patch isolinux boot image";
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case ISO_UNSUPPORTED_SUSP:
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return "Unsupported SUSP feature";
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case ISO_WRONG_RR_WARN:
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return "Error on a RR entry that can be ignored";
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case ISO_SUSP_UNHANDLED:
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return "Error on a RR entry that can be ignored";
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case ISO_SUSP_MULTIPLE_ER:
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return "Multiple ER SUSP entries found";
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case ISO_UNSUPPORTED_VD:
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return "Unsupported volume descriptor found";
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case ISO_EL_TORITO_WARN:
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return "El-Torito related warning";
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case ISO_IMAGE_WRITE_CANCELED:
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return "Image write cancelled";
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case ISO_EL_TORITO_HIDDEN:
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return "El-Torito image is hidden";
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default:
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return "Unknown error";
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}
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}
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int iso_msg_submit(int imgid, int errcode, int causedby, const char *fmt, ...)
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{
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char msg[MAX_MSG_LEN];
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va_list ap;
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/* when called with ISO_CANCELED, we don't need to submit any message */
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if (errcode == ISO_CANCELED && fmt == NULL) {
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return ISO_CANCELED;
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}
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if (fmt) {
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va_start(ap, fmt);
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vsnprintf(msg, MAX_MSG_LEN, fmt, ap);
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va_end(ap);
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} else {
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strncpy(msg, iso_error_to_msg(errcode), MAX_MSG_LEN);
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}
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libiso_msgs_submit(libiso_msgr, imgid, ISO_ERR_CODE(errcode),
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ISO_ERR_SEV(errcode), ISO_ERR_PRIO(errcode), msg, 0, 0);
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if (causedby != 0) {
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snprintf(msg, MAX_MSG_LEN, " > Caused by: %s",
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iso_error_to_msg(causedby));
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libiso_msgs_submit(libiso_msgr, imgid, ISO_ERR_CODE(causedby),
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LIBISO_MSGS_SEV_NOTE, LIBISO_MSGS_PRIO_LOW, msg, 0, 0);
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if (ISO_ERR_SEV(causedby) == LIBISO_MSGS_SEV_FATAL) {
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return ISO_CANCELED;
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}
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}
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if (ISO_ERR_SEV(errcode) >= abort_threshold) {
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return ISO_CANCELED;
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} else {
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return 0;
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}
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}
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/**
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* Control queueing and stderr printing of messages from libisofs.
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* Severity may be one of "NEVER", "FATAL", "SORRY", "WARNING", "HINT",
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* "NOTE", "UPDATE", "DEBUG", "ALL".
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*
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* @param queue_severity Gives the minimum limit for messages to be queued.
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* Default: "NEVER". If you queue messages then you
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* must consume them by iso_msgs_obtain().
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* @param print_severity Does the same for messages to be printed directly
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* to stderr.
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* @param print_id A text prefix to be printed before the message.
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* @return >0 for success, <=0 for error
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*/
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int iso_set_msgs_severities(char *queue_severity, char *print_severity,
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char *print_id)
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{
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int ret, queue_sevno, print_sevno;
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ret = libiso_msgs__text_to_sev(queue_severity, &queue_sevno, 0);
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if (ret <= 0)
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return 0;
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ret = libiso_msgs__text_to_sev(print_severity, &print_sevno, 0);
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if (ret <= 0)
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return 0;
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ret = libiso_msgs_set_severities(libiso_msgr, queue_sevno, print_sevno,
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print_id, 0);
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if (ret <= 0)
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return 0;
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return 1;
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}
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/**
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* Obtain the oldest pending libisofs message from the queue which has at
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* least the given minimum_severity. This message and any older message of
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* lower severity will get discarded from the queue and is then lost forever.
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*
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* Severity may be one of "NEVER", "FATAL", "SORRY", "WARNING", "HINT",
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* "NOTE", "UPDATE", "DEBUG", "ALL". To call with minimum_severity "NEVER"
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* will discard the whole queue.
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*
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* @param error_code Will become a unique error code as listed in messages.h
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* @param imgid Id of the image that was issued the message.
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* @param msg_text Must provide at least ISO_MSGS_MESSAGE_LEN bytes.
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* @param severity Will become the severity related to the message and
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* should provide at least 80 bytes.
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* @return 1 if a matching item was found, 0 if not, <0 for severe errors
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*/
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int iso_obtain_msgs(char *minimum_severity, int *error_code, int *imgid,
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char msg_text[], char severity[])
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{
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int ret, minimum_sevno, sevno, priority, os_errno;
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double timestamp;
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pid_t pid;
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char *textpt, *sev_name;
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struct libiso_msgs_item *item= NULL;
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ret = libiso_msgs__text_to_sev(minimum_severity, &minimum_sevno, 0);
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if (ret <= 0)
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return 0;
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ret = libiso_msgs_obtain(libiso_msgr, &item, minimum_sevno,
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LIBISO_MSGS_PRIO_ZERO, 0);
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if (ret <= 0)
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goto ex;
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ret = libiso_msgs_item_get_msg(item, error_code, &textpt, &os_errno, 0);
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if (ret <= 0)
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goto ex;
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strncpy(msg_text, textpt, ISO_MSGS_MESSAGE_LEN-1);
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if (strlen(textpt) >= ISO_MSGS_MESSAGE_LEN)
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msg_text[ISO_MSGS_MESSAGE_LEN-1] = 0;
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ret = libiso_msgs_item_get_origin(item, ×tamp, &pid, imgid, 0);
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if (ret <= 0)
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goto ex;
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severity[0]= 0;
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ret = libiso_msgs_item_get_rank(item, &sevno, &priority, 0);
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if (ret <= 0)
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goto ex;
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ret = libiso_msgs__sev_to_text(sevno, &sev_name, 0);
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if (ret <= 0)
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goto ex;
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strcpy(severity, sev_name);
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ret = 1;
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ex: ;
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libiso_msgs_destroy_item(libiso_msgr, &item, 0);
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return ret;
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}
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/* ts A80222 : derived from libburn/init.c:burn_msgs_submit()
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*/
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int iso_msgs_submit(int error_code, char msg_text[], int os_errno,
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char severity[], int origin)
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{
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int ret, sevno;
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ret = libiso_msgs__text_to_sev(severity, &sevno, 0);
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if (ret <= 0)
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sevno = LIBISO_MSGS_SEV_ALL;
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if (error_code <= 0) {
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switch(sevno) {
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case LIBISO_MSGS_SEV_ABORT: error_code = 0x00040000;
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break; case LIBISO_MSGS_SEV_FATAL: error_code = 0x00040001;
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break; case LIBISO_MSGS_SEV_SORRY: error_code = 0x00040002;
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break; case LIBISO_MSGS_SEV_WARNING: error_code = 0x00040003;
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break; case LIBISO_MSGS_SEV_HINT: error_code = 0x00040004;
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break; case LIBISO_MSGS_SEV_NOTE: error_code = 0x00040005;
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break; case LIBISO_MSGS_SEV_UPDATE: error_code = 0x00040006;
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break; case LIBISO_MSGS_SEV_DEBUG: error_code = 0x00040007;
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break; default: error_code = 0x00040008;
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}
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}
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ret = libiso_msgs_submit(libiso_msgr, origin, error_code,
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sevno, LIBISO_MSGS_PRIO_HIGH, msg_text, os_errno, 0);
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return ret;
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}
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/* ts A80222 : derived from libburn/init.c:burn_text_to_sev()
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*/
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int iso_text_to_sev(char *severity_name, int *sevno)
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{
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int ret;
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ret = libiso_msgs__text_to_sev(severity_name, sevno, 0);
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if (ret <= 0)
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*sevno = LIBISO_MSGS_SEV_FATAL;
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return ret;
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}
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/* ts A80222 : derived from libburn/init.c:burn_sev_to_text()
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*/
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int iso_sev_to_text(int severity_number, char **severity_name)
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{
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int ret;
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ret = libiso_msgs__sev_to_text(severity_number, severity_name, 0);
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return ret;
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}
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/**
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* Return the messenger object handle used by libisofs. This handle
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* may be used by related libraries to their own compatible
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* messenger objects and thus to direct their messages to the libisofs
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* message queue. See also: libburn, API function burn_set_messenger().
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*
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* @return the handle. Do only use with compatible
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*/
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void *iso_get_messenger()
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{
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return libiso_msgr;
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}
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int iso_error_get_severity(int e)
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{
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return ISO_ERR_SEV(e);
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}
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int iso_error_get_priority(int e)
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{
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return ISO_ERR_PRIO(e);
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}
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int iso_error_get_code(int e)
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{
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return ISO_ERR_CODE(e);
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}
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/* ts A80222 */
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int iso_report_errfile(char *path, int error_code, int os_errno, int flag)
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{
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libiso_msgs_submit(libiso_msgr, 0, error_code,
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LIBISO_MSGS_SEV_ERRFILE, LIBISO_MSGS_PRIO_HIGH,
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path, os_errno, 0);
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return(1);
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}
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