Coverage report for src/virterror.c.gcov
-: 0:Source:virterror.c
-: 0:Graph:./libvirt_la-virterror.gcno
-: 0:Data:./libvirt_la-virterror.gcda
-: 0:Runs:2
-: 0:Programs:2
-: 1:/*
-: 2: * virterror.c: implements error handling and reporting code for libvirt
-: 3: *
-: 4: * Copy: Copyright (C) 2006 Red Hat, Inc.
-: 5: *
-: 6: * See COPYING.LIB for the License of this software
-: 7: *
-: 8: * Author: Daniel Veillard <veillard@redhat.com>
-: 9: */
-: 10:
-: 11:#include <stdio.h>
-: 12:#include <stdlib.h>
-: 13:#include <string.h>
-: 14:#include <stdarg.h>
-: 15:#include "libvirt/libvirt.h"
-: 16:#include "libvirt/virterror.h"
-: 17:#include "internal.h"
-: 18:
-: 19:static virError lastErr = /* the last error */
-: 20:{ 0, 0, NULL, VIR_ERR_NONE, NULL, NULL, NULL, NULL, NULL, 0, 0 };
-: 21:static virErrorFunc virErrorHandler = NULL; /* global error handlet */
-: 22:static void *virUserData = NULL; /* associated data */
-: 23:
-: 24:/*
-: 25: * Macro used to format the message as a string in __virRaiseError
-: 26: * and borrowed from libxml2.
-: 27: */
-: 28:#define VIR_GET_VAR_STR(msg, str) { \
-: 29: int size, prev_size = -1; \
-: 30: int chars; \
-: 31: char *larger; \
-: 32: va_list ap; \
-: 33: \
-: 34: str = (char *) malloc(150); \
-: 35: if (str != NULL) { \
-: 36: \
-: 37: size = 150; \
-: 38: \
-: 39: while (1) { \
-: 40: va_start(ap, msg); \
-: 41: chars = vsnprintf(str, size, msg, ap); \
-: 42: va_end(ap); \
-: 43: if ((chars > -1) && (chars < size)) { \
-: 44: if (prev_size == chars) { \
-: 45: break; \
-: 46: } else { \
-: 47: prev_size = chars; \
-: 48: } \
-: 49: } \
-: 50: if (chars > -1) \
-: 51: size += chars + 1; \
-: 52: else \
-: 53: size += 100; \
-: 54: if ((larger = (char *) realloc(str, size)) == NULL) { \
-: 55: break; \
-: 56: } \
-: 57: str = larger; \
-: 58: }} \
-: 59:}
-: 60:
-: 61:/*
-: 62: * virGetLastError:
-: 63: *
-: 64: * Provide a pointer to the last error caught at the library level
-: 65: * Simpler but may not be suitable for multithreaded accesses, in which
-: 66: * case use virCopyLastError()
-: 67: *
-: 68: * Returns a pointer to the last error or NULL if none occured.
-: 69: */
-: 70:virErrorPtr
-: 71:virGetLastError(void)
function virGetLastError called 0 returned 0% blocks executed 0%
#####: 72:{
#####: 73: if (lastErr.code == VIR_ERR_OK)
branch 0 never executed
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#####: 74: return (NULL);
#####: 75: return (&lastErr);
-: 76:}
-: 77:
-: 78:/*
-: 79: * virCopyLastError:
-: 80: * @to: target to receive the copy
-: 81: *
-: 82: * Copy the content of the last error caught at the library level
-: 83: * One will need to free the result with virResetError()
-: 84: *
-: 85: * Returns 0 if no error was found and the error code otherwise and -1 in case
-: 86: * of parameter error.
-: 87: */
-: 88:int
-: 89:virCopyLastError(virErrorPtr to)
function virCopyLastError called 0 returned 0% blocks executed 0%
#####: 90:{
#####: 91: if (to == NULL)
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#####: 92: return (-1);
#####: 93: if (lastErr.code == VIR_ERR_OK)
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#####: 94: return (0);
#####: 95: memcpy(to, &lastErr, sizeof(virError));
call 0 never executed
#####: 96: return (lastErr.code);
-: 97:}
-: 98:
-: 99:/**
-: 100: * virResetError:
-: 101: * @err: pointer to the virError to clean up
-: 102: *
-: 103: * Reset the error being pointed to
-: 104: */
-: 105:void
-: 106:virResetError(virErrorPtr err)
function virResetError called 0 returned 0% blocks executed 0%
#####: 107:{
#####: 108: if (err == NULL)
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#####: 109: return;
#####: 110: if (err->message != NULL)
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#####: 111: free(err->message);
call 0 never executed
#####: 112: if (err->str1 != NULL)
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#####: 113: free(err->str1);
call 0 never executed
#####: 114: if (err->str2 != NULL)
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#####: 115: free(err->str2);
call 0 never executed
#####: 116: if (err->str3 != NULL)
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#####: 117: free(err->str3);
call 0 never executed
#####: 118: memset(err, 0, sizeof(virError));
call 0 never executed
-: 119:}
-: 120:
-: 121:/**
-: 122: * virResetLastError:
-: 123: *
-: 124: * Reset the last error caught at the library level.
-: 125: */
-: 126:void
-: 127:virResetLastError(void)
function virResetLastError called 0 returned 0% blocks executed 0%
#####: 128:{
#####: 129: virResetError(&lastErr);
call 0 never executed
#####: 130:}
-: 131:
-: 132:/**
-: 133: * virConnGetLastError:
-: 134: * @conn: pointer to the hypervisor connection
-: 135: *
-: 136: * Provide a pointer to the last error caught on that connection
-: 137: * Simpler but may not be suitable for multithreaded accesses, in which
-: 138: * case use virConnCopyLastError()
-: 139: *
-: 140: * Returns a pointer to the last error or NULL if none occured.
-: 141: */
-: 142:virErrorPtr
-: 143:virConnGetLastError(virConnectPtr conn)
function virConnGetLastError called 0 returned 0% blocks executed 0%
#####: 144:{
#####: 145: if (conn == NULL)
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#####: 146: return (NULL);
#####: 147: return (&conn->err);
-: 148:}
-: 149:
-: 150:/**
-: 151: * virConnCopyLastError:
-: 152: * @conn: pointer to the hypervisor connection
-: 153: * @to: target to receive the copy
-: 154: *
-: 155: * Copy the content of the last error caught on that connection
-: 156: * One will need to free the result with virResetError()
-: 157: *
-: 158: * Returns 0 if no error was found and the error code otherwise and -1 in case
-: 159: * of parameter error.
-: 160: */
-: 161:int
-: 162:virConnCopyLastError(virConnectPtr conn, virErrorPtr to)
function virConnCopyLastError called 0 returned 0% blocks executed 0%
#####: 163:{
#####: 164: if (conn == NULL)
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#####: 165: return (-1);
#####: 166: if (to == NULL)
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#####: 167: return (-1);
#####: 168: if (conn->err.code == VIR_ERR_OK)
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#####: 169: return (0);
#####: 170: memcpy(to, &conn->err, sizeof(virError));
call 0 never executed
#####: 171: return (conn->err.code);
-: 172:}
-: 173:
-: 174:/**
-: 175: * virConnResetLastError:
-: 176: * @conn: pointer to the hypervisor connection
-: 177: *
-: 178: * Reset the last error caught on that connection
-: 179: */
-: 180:void
-: 181:virConnResetLastError(virConnectPtr conn)
function virConnResetLastError called 0 returned 0% blocks executed 0%
#####: 182:{
#####: 183: if (conn == NULL)
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#####: 184: return;
#####: 185: virResetError(&conn->err);
call 0 never executed
-: 186:}
-: 187:
-: 188:/**
-: 189: * virSetErrorFunc:
-: 190: * @userData: pointer to the user data provided in the handler callback
-: 191: * @handler: the function to get called in case of error or NULL
-: 192: *
-: 193: * Set a library global error handling function, if @handler is NULL,
-: 194: * it will reset to default printing on stderr. The error raised there
-: 195: * are those for which no handler at the connection level could caught.
-: 196: */
-: 197:void
-: 198:virSetErrorFunc(void *userData, virErrorFunc handler)
function virSetErrorFunc called 0 returned 0% blocks executed 0%
#####: 199:{
#####: 200: virErrorHandler = handler;
#####: 201: virUserData = userData;
#####: 202:}
-: 203:
-: 204:/**
-: 205: * virConnSetErrorFunc:
-: 206: * @conn: pointer to the hypervisor connection
-: 207: * @userData: pointer to the user data provided in the handler callback
-: 208: * @handler: the function to get called in case of error or NULL
-: 209: *
-: 210: * Set a connection error handling function, if @handler is NULL
-: 211: * it will reset to default which is to pass error back to the global
-: 212: * library handler.
-: 213: */
-: 214:void
-: 215:virConnSetErrorFunc(virConnectPtr conn, void *userData,
-: 216: virErrorFunc handler)
function virConnSetErrorFunc called 0 returned 0% blocks executed 0%
#####: 217:{
#####: 218: if (conn == NULL)
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#####: 219: return;
#####: 220: conn->handler = handler;
#####: 221: conn->userData = userData;
-: 222:}
-: 223:
-: 224:/**
-: 225: * virDefaultErrorFunc:
-: 226: * @err: pointer to the error.
-: 227: *
-: 228: * Default routine reporting an error to stderr.
-: 229: */
-: 230:void
-: 231:virDefaultErrorFunc(virErrorPtr err)
function virDefaultErrorFunc called 0 returned 0% blocks executed 0%
#####: 232:{
#####: 233: const char *lvl = "", *dom = "", *domain = "";
-: 234: int len;
-: 235:
#####: 236: if ((err == NULL) || (err->code == VIR_ERR_OK))
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-: 237: return;
#####: 238: switch (err->level) {
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-: 239: case VIR_ERR_NONE:
#####: 240: lvl = "";
#####: 241: break;
-: 242: case VIR_ERR_WARNING:
#####: 243: lvl = "warning";
#####: 244: break;
-: 245: case VIR_ERR_ERROR:
#####: 246: lvl = "error";
-: 247: break;
-: 248: }
#####: 249: switch (err->domain) {
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-: 250: case VIR_FROM_NONE:
#####: 251: dom = "";
#####: 252: break;
-: 253: case VIR_FROM_XEN:
#####: 254: dom = "Xen ";
#####: 255: break;
-: 256: case VIR_FROM_XEND:
#####: 257: dom = "Xen Daemon ";
#####: 258: break;
-: 259: case VIR_FROM_XENSTORE:
#####: 260: dom = "Xen Store ";
#####: 261: break;
-: 262: case VIR_FROM_DOM:
#####: 263: dom = "Domain ";
#####: 264: break;
-: 265: case VIR_FROM_RPC:
#####: 266: dom = "XML-RPC ";
-: 267: break;
-: 268: }
#####: 269: if ((err->dom != NULL) && (err->code != VIR_ERR_INVALID_DOMAIN)) {
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#####: 270: domain = err->dom->name;
-: 271: }
#####: 272: len = strlen(err->message);
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#####: 273: if ((len == 0) || (err->message[len - 1] != '\n'))
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#####: 274: fprintf(stderr, "libvir: %s%s %s: %s\n",
call 0 never executed
-: 275: dom, lvl, domain, err->message);
-: 276: else
#####: 277: fprintf(stderr, "libvir: %s%s %s: %s",
call 0 never executed
-: 278: dom, lvl, domain, err->message);
-: 279:}
-: 280:
-: 281:/**
-: 282: * __virRaiseError:
-: 283: * @conn: the connection to the hypervisor if available
-: 284: * @dom: the domain if available
-: 285: * @domain: the virErrorDomain indicating where it's coming from
-: 286: * @code: the virErrorNumber code for the error
-: 287: * @level: the virErrorLevel for the error
-: 288: * @str1: extra string info
-: 289: * @str2: extra string info
-: 290: * @str3: extra string info
-: 291: * @int1: extra int info
-: 292: * @int2: extra int info
-: 293: * @msg: the message to display/transmit
-: 294: * @...: extra parameters for the message display
-: 295: *
-: 296: * Internal routine called when an error is detected. It will raise it
-: 297: * immediately if a callback is found and store it for later handling.
-: 298: */
-: 299:void
-: 300:__virRaiseError(virConnectPtr conn, virDomainPtr dom,
-: 301: int domain, int code, virErrorLevel level,
-: 302: const char *str1, const char *str2, const char *str3,
-: 303: int int1, int int2, const char *msg, ...)
function __virRaiseError called 0 returned 0% blocks executed 0%
#####: 304:{
#####: 305: virErrorPtr to = &lastErr;
#####: 306: void *userData = virUserData;
#####: 307: virErrorFunc handler = virErrorHandler;
-: 308: char *str;
-: 309:
#####: 310: if (code == VIR_ERR_OK)
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#####: 311: return;
-: 312:
-: 313: /*
-: 314: * try to find the best place to save and report the error
-: 315: */
#####: 316: if (conn != NULL) {
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#####: 317: to = &conn->err;
#####: 318: if (conn->handler != NULL) {
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#####: 319: handler = conn->handler;
#####: 320: userData = conn->userData;
-: 321: }
-: 322: }
-: 323:
-: 324: /*
-: 325: * formats the message
-: 326: */
#####: 327: if (msg == NULL) {
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#####: 328: str = strdup("No error message provided");
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-: 329: } else {
#####: 330: VIR_GET_VAR_STR(msg, str);
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-: 331: }
-: 332:
-: 333: /*
-: 334: * Save the information about the error
-: 335: */
#####: 336: virResetError(to);
call 0 never executed
#####: 337: to->conn = conn;
#####: 338: to->dom = dom;
#####: 339: to->domain = domain;
#####: 340: to->code = code;
#####: 341: to->message = str;
#####: 342: to->level = level;
#####: 343: if (str1 != NULL)
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#####: 344: to->str1 = strdup(str1);
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#####: 345: if (str2 != NULL)
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#####: 346: to->str2 = strdup(str2);
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#####: 347: if (str3 != NULL)
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#####: 348: to->str3 = strdup(str3);
call 0 never executed
#####: 349: to->int1 = int1;
#####: 350: to->int2 = int2;
-: 351:
-: 352: /*
-: 353: * now, report it
-: 354: */
#####: 355: if (handler != NULL) {
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#####: 356: handler(userData, to);
call 0 never executed
-: 357: } else {
#####: 358: virDefaultErrorFunc(to);
call 0 never executed
-: 359: }
-: 360:}
-: 361:
-: 362:/**
-: 363: * __virErrorMsg:
-: 364: * @error: the virErrorNumber
-: 365: * @info: usually the first paprameter string
-: 366: *
-: 367: * Internal routine to get the message associated to an error raised
-: 368: * from the library
-: 369: *
-: 370: * Returns the constant string associated to @error
-: 371: */
-: 372:const char *
-: 373:__virErrorMsg(virErrorNumber error, const char *info)
function __virErrorMsg called 0 returned 0% blocks executed 0%
#####: 374:{
#####: 375: const char *errmsg = NULL;
-: 376:
#####: 377: switch (error) {
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-: 378: case VIR_ERR_OK:
#####: 379: return (NULL);
-: 380: case VIR_ERR_INTERNAL_ERROR:
#####: 381: if (info != NULL)
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#####: 382: errmsg = "internal error %s";
-: 383: else
#####: 384: errmsg = "internal error";
-: 385: break;
-: 386: case VIR_ERR_NO_MEMORY:
#####: 387: errmsg = "out of memory";
#####: 388: break;
-: 389: case VIR_ERR_NO_SUPPORT:
#####: 390: if (info != NULL)
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#####: 391: errmsg = "no support for hypervisor";
-: 392: else
#####: 393: errmsg = "no support for hypervisor %s";
-: 394: break;
-: 395: case VIR_ERR_NO_CONNECT:
#####: 396: if (info == NULL)
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#####: 397: errmsg = "could not connect to hypervisor";
-: 398: else
#####: 399: errmsg = "could not connect to %s";
-: 400: break;
-: 401: case VIR_ERR_INVALID_CONN:
#####: 402: if (info == NULL)
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#####: 403: errmsg = "invalid connection pointer in";
-: 404: else
#####: 405: errmsg = "invalid connection pointer in %s";
-: 406: break;
-: 407: case VIR_ERR_INVALID_DOMAIN:
#####: 408: if (info == NULL)
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#####: 409: errmsg = "invalid domain pointer in";
-: 410: else
#####: 411: errmsg = "invalid domain pointer in %s";
-: 412: break;
-: 413: case VIR_ERR_INVALID_ARG:
#####: 414: if (info == NULL)
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#####: 415: errmsg = "invalid argument in";
-: 416: else
#####: 417: errmsg = "invalid argument in %s";
-: 418: break;
-: 419: case VIR_ERR_OPERATION_FAILED:
#####: 420: if (info != NULL)
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#####: 421: errmsg = "operation failed: %s";
-: 422: else
#####: 423: errmsg = "operation failed";
-: 424: break;
-: 425: case VIR_ERR_GET_FAILED:
#####: 426: if (info != NULL)
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#####: 427: errmsg = "GET operation failed: %s";
-: 428: else
#####: 429: errmsg = "GET operation failed";
-: 430: break;
-: 431: case VIR_ERR_POST_FAILED:
#####: 432: if (info != NULL)
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#####: 433: errmsg = "POST operation failed: %s";
-: 434: else
#####: 435: errmsg = "POST operation failed";
-: 436: break;
-: 437: case VIR_ERR_HTTP_ERROR:
#####: 438: errmsg = "got unknown HTTP error code %d";
#####: 439: break;
-: 440: case VIR_ERR_UNKNOWN_HOST:
#####: 441: if (info != NULL)
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#####: 442: errmsg = "unknown host %s";
-: 443: else
#####: 444: errmsg = "unknown host";
-: 445: break;
-: 446: case VIR_ERR_SEXPR_SERIAL:
#####: 447: if (info != NULL)
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#####: 448: errmsg = "failed to serialize S-Expr: %s";
-: 449: else
#####: 450: errmsg = "failed to serialize S-Expr";
-: 451: break;
-: 452: case VIR_ERR_NO_XEN:
#####: 453: if (info == NULL)
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#####: 454: errmsg = "could not use Xen hypervisor entry";
-: 455: else
#####: 456: errmsg = "could not use Xen hypervisor entry %s";
-: 457: break;
-: 458: case VIR_ERR_NO_XENSTORE:
#####: 459: if (info == NULL)
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#####: 460: errmsg = "could not connect to Xen Store";
-: 461: else
#####: 462: errmsg = "could not connect to Xen Store %s";
-: 463: break;
-: 464: case VIR_ERR_XEN_CALL:
#####: 465: errmsg = "failed Xen syscall %s %d";
#####: 466: break;
-: 467: case VIR_ERR_OS_TYPE:
#####: 468: if (info == NULL)
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#####: 469: errmsg = "unknown OS type";
-: 470: else
#####: 471: errmsg = "unknown OS type %s";
-: 472: break;
-: 473: case VIR_ERR_NO_KERNEL:
#####: 474: errmsg = "missing kernel information";
#####: 475: break;
-: 476: case VIR_ERR_NO_ROOT:
#####: 477: if (info == NULL)
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#####: 478: errmsg = "missing root device information";
-: 479: else
#####: 480: errmsg = "missing root device information in %s";
-: 481: break;
-: 482: case VIR_ERR_NO_SOURCE:
#####: 483: if (info == NULL)
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#####: 484: errmsg = "missing source information for device";
-: 485: else
#####: 486: errmsg = "missing source information for device %s";
-: 487: break;
-: 488: case VIR_ERR_NO_TARGET:
#####: 489: if (info == NULL)
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#####: 490: errmsg = "missing target information for device";
-: 491: else
#####: 492: errmsg = "missing target information for device %s";
-: 493: break;
-: 494: case VIR_ERR_NO_NAME:
#####: 495: if (info == NULL)
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#####: 496: errmsg = "missing domain name information";
-: 497: else
#####: 498: errmsg = "missing domain name information in %s";
-: 499: break;
-: 500: case VIR_ERR_NO_OS:
#####: 501: if (info == NULL)
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#####: 502: errmsg = "missing operating system information";
-: 503: else
#####: 504: errmsg = "missing operating system information for %s";
-: 505: break;
-: 506: case VIR_ERR_NO_DEVICE:
#####: 507: if (info == NULL)
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#####: 508: errmsg = "missing devices information";
-: 509: else
#####: 510: errmsg = "missing devices information for %s";
-: 511: break;
-: 512: case VIR_ERR_DRIVER_FULL:
#####: 513: if (info == NULL)
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#####: 514: errmsg = "too many drivers registered";
-: 515: else
#####: 516: errmsg = "too many drivers registered in %s";
-: 517: break;
-: 518: case VIR_ERR_CALL_FAILED:
#####: 519: if (info == NULL)
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#####: 520: errmsg = "library call failed, possibly not supported";
-: 521: else
#####: 522: errmsg = "library call %s failed, possibly not supported";
-: 523: break;
-: 524: case VIR_ERR_XML_ERROR:
#####: 525: if (info == NULL)
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#####: 526: errmsg = "XML description not well formed or invalid";
-: 527: else
#####: 528: errmsg = "XML description for %s is not well formed or invalid";
-: 529: break;
-: 530: case VIR_ERR_DOM_EXIST:
#####: 531: if (info == NULL)
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#####: 532: errmsg = "this domain exists already";
-: 533: else
#####: 534: errmsg = "domain %s exists already";
-: 535: break;
-: 536: case VIR_ERR_OPERATION_DENIED:
#####: 537: if (info == NULL)
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#####: 538: errmsg = "operation forbidden for read only access";
-: 539: else
#####: 540: errmsg = "operation %s forbidden for read only access";
-: 541: break;
-: 542: }
#####: 543: return (errmsg);
-: 544:}