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[libvirt] PATCH: Fix many many win32 bugs
by Daniel P. Berrange 23 Jul '09

23 Jul '09

Latest GCC changed the meaning of 'printf' attribute annotation to refer to the host platform's native format specifiers. On Win32/mingw32 this means it is now validating against Microsoft's useless format specifiers. We replace all the printf like functions on Win32 thanks to GNULIB and thus should always validate against the GNU format specifiers. This means we have to use the 'gnu_printf' annotation everywhere, but only for GCC >= 4.4. This also disables the 'pwd' and 'cd' commands in virsh because neither of those build successfully on Win32. Finally, disables the OpenNebula driver on Win32 Daniel diff --git a/HACKING b/HACKING index ca39d61..da28e98 100644 --- a/HACKING +++ b/HACKING @@ -312,7 +312,7 @@ gcc's printf attribute directive in the prototype. For example, here's the one for virAsprintf, in util.h: int virAsprintf(char **strp, const char *fmt, ...) - ATTRIBUTE_FORMAT(printf, 2, 3); + ATTRIBUTE_FMT_PRINTF(2, 3); This makes it so gcc's -Wformat and -Wformat-security options can do their jobs and cross-check format strings with the number and types diff --git a/autobuild.sh b/autobuild.sh index 54abede..d090e74 100755 --- a/autobuild.sh +++ b/autobuild.sh @@ -76,6 +76,7 @@ if [ -x /usr/bin/i686-pc-mingw32-gcc ]; then --without-uml \ --without-vbox \ --without-openvz \ + --without-one \ --without-libvirtd make diff --git a/mingw32-libvirt.spec.in b/mingw32-libvirt.spec.in index 271c6ca..9514032 100644 --- a/mingw32-libvirt.spec.in +++ b/mingw32-libvirt.spec.in @@ -52,6 +52,7 @@ MinGW Windows libvirt virtualization library. --without-uml \ --without-vbox \ --without-openvz \ + --without-one \ --without-libvirtd make @@ -90,6 +91,7 @@ rm -rf $RPM_BUILD_ROOT %{_mingw32_datadir}/libvirt/schemas/storagevol.rng %{_mingw32_datadir}/libvirt/schemas/nodedev.rng %{_mingw32_datadir}/libvirt/schemas/capability.rng +%{_mingw32_datadir}/libvirt/schemas/interface.rng %{_mingw32_datadir}/locale/*/LC_MESSAGES/libvirt.mo diff --git a/qemud/dispatch.h b/qemud/dispatch.h index ab45b19..1d85df9 100644 --- a/qemud/dispatch.h +++ b/qemud/dispatch.h @@ -41,7 +41,7 @@ remoteDispatchClientRequest (struct qemud_server *server, void remoteDispatchFormatError (remote_error *rerr, const char *fmt, ...) - ATTRIBUTE_FORMAT(printf, 2, 3); + ATTRIBUTE_FMT_PRINTF(2, 3); void remoteDispatchAuthError (remote_error *rerr); void remoteDispatchGenericError (remote_error *rerr); diff --git a/qemud/qemud.h b/qemud/qemud.h index abacbbb..254db44 100644 --- a/qemud/qemud.h +++ b/qemud/qemud.h @@ -52,15 +52,61 @@ #ifdef HAVE_ANSIDECL_H #include <ansidecl.h> #endif + +#ifndef __GNUC_PREREQ +#if defined __GNUC__ && defined __GNUC_MINOR__ +# define __GNUC_PREREQ(maj, min) \ + ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) +#else +#define __GNUC_PREREQ(maj,min) 0 +#endif +#endif + +/** + * ATTRIBUTE_UNUSED: + * + * Macro to flag conciously unused parameters to functions + */ #ifndef ATTRIBUTE_UNUSED #define ATTRIBUTE_UNUSED __attribute__((__unused__)) #endif -#ifndef ATTRIBUTE_FORMAT -#define ATTRIBUTE_FORMAT(args...) __attribute__((__format__ (args))) + +/** + * ATTRIBUTE_FMT_PRINTF + * + * Macro used to check printf like functions, if compiling + * with gcc. + * + * We use gnulib which guarentees we always have GNU style + * printf format specifiers even on broken Win32 platforms + * hence we have to force 'gnu_printf' for new GCC + */ +#ifndef ATTRIBUTE_FMT_PRINTF +#if __GNUC_PREREQ (4, 4) +#define ATTRIBUTE_FMT_PRINTF(fmtpos,argpos) __attribute__((__format__ (gnu_printf, fmtpos,argpos))) +#else +#define ATTRIBUTE_FMT_PRINTF(fmtpos,argpos) __attribute__((__format__ (printf, fmtpos,argpos))) +#endif #endif + +#ifndef ATTRIBUTE_RETURN_CHECK +#if __GNUC_PREREQ (3, 4) +#define ATTRIBUTE_RETURN_CHECK __attribute__((__warn_unused_result__)) #else +#define ATTRIBUTE_RETURN_CHECK +#endif +#endif + +#else +#ifndef ATTRIBUTE_UNUSED #define ATTRIBUTE_UNUSED -#define ATTRIBUTE_FORMAT(...) +#endif +#ifndef ATTRIBUTE_FMT_PRINTF +#define ATTRIBUTE_FMT_PRINTF(...) +#endif +#ifndef ATTRIBUTE_RETURN_CHECK +#define ATTRIBUTE_RETURN_CHECK +#endif #endif #define qemudDebug DEBUG @@ -213,7 +259,7 @@ struct qemud_server { }; void qemudLog(int priority, const char *fmt, ...) - ATTRIBUTE_FORMAT(printf,2,3); + ATTRIBUTE_FMT_PRINTF(2,3); diff --git a/src/buf.h b/src/buf.h index 0b78d17..7d31cb2 100644 --- a/src/buf.h +++ b/src/buf.h @@ -40,7 +40,7 @@ unsigned int virBufferUse(const virBufferPtr buf); void virBufferAdd(const virBufferPtr buf, const char *str, int len); void virBufferAddChar(const virBufferPtr buf, char c); void virBufferVSprintf(const virBufferPtr buf, const char *format, ...) - ATTRIBUTE_FORMAT(printf, 2, 3); + ATTRIBUTE_FMT_PRINTF(2, 3); void virBufferStrcat(const virBufferPtr buf, ...); void virBufferEscapeString(const virBufferPtr buf, const char *format, const char *str); void virBufferURIEncodeString (const virBufferPtr buf, const char *str); diff --git a/src/internal.h b/src/internal.h index adb6507..cf7e196 100644 --- a/src/internal.h +++ b/src/internal.h @@ -67,8 +67,13 @@ #ifdef __GNUC__ #ifndef __GNUC_PREREQ +#if defined __GNUC__ && defined __GNUC_MINOR__ +# define __GNUC_PREREQ(maj, min) \ + ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) +#else #define __GNUC_PREREQ(maj,min) 0 #endif +#endif /** * ATTRIBUTE_UNUSED: @@ -80,13 +85,21 @@ #endif /** - * ATTRIBUTE_FORMAT + * ATTRIBUTE_FMT_PRINTF * - * Macro used to check printf/scanf-like functions, if compiling + * Macro used to check printf like functions, if compiling * with gcc. + * + * We use gnulib which guarentees we always have GNU style + * printf format specifiers even on broken Win32 platforms + * hence we have to force 'gnu_printf' for new GCC */ -#ifndef ATTRIBUTE_FORMAT -#define ATTRIBUTE_FORMAT(args...) __attribute__((__format__ (args))) +#ifndef ATTRIBUTE_FMT_PRINTF +#if __GNUC_PREREQ (4, 4) +#define ATTRIBUTE_FMT_PRINTF(fmtpos,argpos) __attribute__((__format__ (gnu_printf, fmtpos,argpos))) +#else +#define ATTRIBUTE_FMT_PRINTF(fmtpos,argpos) __attribute__((__format__ (printf, fmtpos,argpos))) +#endif #endif #ifndef ATTRIBUTE_RETURN_CHECK @@ -98,9 +111,15 @@ #endif #else +#ifndef ATTRIBUTE_UNUSED #define ATTRIBUTE_UNUSED -#define ATTRIBUTE_FORMAT(...) +#endif +#ifndef ATTRIBUTE_FMT_PRINTF +#define ATTRIBUTE_FMT_PRINTF(...) +#endif +#ifndef ATTRIBUTE_RETURN_CHECK #define ATTRIBUTE_RETURN_CHECK +#endif #endif /* __GNUC__ */ /* diff --git a/src/logging.h b/src/logging.h index 0b9ae79..f1e2525 100644 --- a/src/logging.h +++ b/src/logging.h @@ -121,6 +121,6 @@ extern int virLogParseFilters(const char *filters); extern int virLogParseOutputs(const char *output); extern void virLogMessage(const char *category, int priority, const char *funcname, long long linenr, int flags, - const char *fmt, ...) ATTRIBUTE_FORMAT(printf, 6, 7); + const char *fmt, ...) ATTRIBUTE_FMT_PRINTF(6, 7); #endif diff --git a/src/security.h b/src/security.h index 585caa0..5fc3086 100644 --- a/src/security.h +++ b/src/security.h @@ -82,7 +82,7 @@ virSecurityDriverVerify(virConnectPtr conn, virDomainDefPtr def); void virSecurityReportError(virConnectPtr conn, int code, const char *fmt, ...) - ATTRIBUTE_FORMAT(printf, 3, 4); + ATTRIBUTE_FMT_PRINTF(3, 4); /* Helpers */ void virSecurityDriverInit(virSecurityDriverPtr drv); diff --git a/src/sexpr.h b/src/sexpr.h index c3d038e..1d9adaa 100644 --- a/src/sexpr.h +++ b/src/sexpr.h @@ -49,7 +49,7 @@ void sexpr_free(struct sexpr *sexpr); const char *sexpr_node(const struct sexpr *sexpr, const char *node); int sexpr_node_copy(const struct sexpr *sexpr, const char *node, char **dst); const char *sexpr_fmt_node(const struct sexpr *sexpr, const char *fmt, ...) - ATTRIBUTE_FORMAT(printf,2,3); + ATTRIBUTE_FMT_PRINTF(2,3); struct sexpr *sexpr_lookup(const struct sexpr *sexpr, const char *node); int sexpr_has(const struct sexpr *sexpr, const char *node); #endif diff --git a/src/threads-win32.c b/src/threads-win32.c index 10233b0..ef3f2ef 100644 --- a/src/threads-win32.c +++ b/src/threads-win32.c @@ -41,8 +41,10 @@ void virCondEventCleanup(void *data); int virThreadInitialize(void) { - virMutexInit(&virThreadLocalLock); - virThreadLocalInit(&virCondEvent, virCondEventCleanup); + if (virMutexInit(&virThreadLocalLock) < 0) + return -1; + if (virThreadLocalInit(&virCondEvent, virCondEventCleanup) < 0) + return -1; return 0; } diff --git a/src/util.h b/src/util.h index 1a7286c..43a5bbc 100644 --- a/src/util.h +++ b/src/util.h @@ -160,7 +160,7 @@ int virMacAddrCompare (const char *mac1, const char *mac2); void virSkipSpaces(const char **str); int virParseNumber(const char **str); int virAsprintf(char **strp, const char *fmt, ...) - ATTRIBUTE_FORMAT(printf, 2, 3); + ATTRIBUTE_FMT_PRINTF(2, 3); #define VIR_MAC_BUFLEN 6 #define VIR_MAC_PREFIX_BUFLEN 3 diff --git a/src/virsh.c b/src/virsh.c index fff73a1..6919292 100644 --- a/src/virsh.c +++ b/src/virsh.c @@ -202,7 +202,7 @@ typedef struct __vshControl { static const vshCmdDef commands[]; static void vshError(vshControl *ctl, int doexit, const char *format, ...) - ATTRIBUTE_FORMAT(printf, 3, 4); + ATTRIBUTE_FMT_PRINTF(3, 4); static int vshInit(vshControl *ctl); static int vshDeinit(vshControl *ctl); static void vshUsage(void); @@ -272,9 +272,9 @@ static virStorageVolPtr vshCommandOptVolBy(vshControl *ctl, const vshCmd *cmd, VSH_BYUUID|VSH_BYNAME) static void vshPrintExtra(vshControl *ctl, const char *format, ...) - ATTRIBUTE_FORMAT(printf, 2, 3); + ATTRIBUTE_FMT_PRINTF(2, 3); static void vshDebug(vshControl *ctl, int level, const char *format, ...) - ATTRIBUTE_FORMAT(printf, 3, 4); + ATTRIBUTE_FMT_PRINTF(3, 4); /* XXX: add batch support */ #define vshPrint(_ctl, ...) fprintf(stdout, __VA_ARGS__) @@ -495,6 +495,8 @@ cmdConnect(vshControl *ctl, const vshCmd *cmd) return ctl->conn ? TRUE : FALSE; } +#ifndef WIN32 + /* * "console" command */ @@ -510,8 +512,6 @@ static const vshCmdOptDef opts_console[] = { {NULL, 0, 0, NULL} }; -#ifndef __MINGW32__ - static int cmdRunConsole(vshControl *ctl, virDomainPtr dom) { @@ -574,17 +574,6 @@ cmdRunConsole(vshControl *ctl, virDomainPtr dom) return ret; } -#else /* __MINGW32__ */ - -static int -cmdRunConsole(vshControl *ctl, virDomainPtr dom ATTRIBUTE_UNUSED) -{ - vshError (ctl, FALSE, "%s", _("console not implemented on this platform")); - return FALSE; -} - -#endif /* __MINGW32__ */ - static int cmdConsole(vshControl *ctl, const vshCmd *cmd) { @@ -603,6 +592,9 @@ cmdConsole(vshControl *ctl, const vshCmd *cmd) return ret; } +#endif /* WIN32 */ + + /* * "list" command */ @@ -931,7 +923,9 @@ static const vshCmdInfo info_create[] = { static const vshCmdOptDef opts_create[] = { {"file", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("file containing an XML domain description")}, +#ifndef WIN32 {"console", VSH_OT_BOOL, 0, gettext_noop("attach to console after creation")}, +#endif {NULL, 0, 0, NULL} }; @@ -943,7 +937,9 @@ cmdCreate(vshControl *ctl, const vshCmd *cmd) int found; int ret = TRUE; char *buffer; +#ifndef WIN32 int console = vshCommandOptBool(cmd, "console"); +#endif if (!vshConnectionUsability(ctl, ctl->conn, TRUE)) return FALSE; @@ -961,8 +957,10 @@ cmdCreate(vshControl *ctl, const vshCmd *cmd) if (dom != NULL) { vshPrint(ctl, _("Domain %s created from %s\n"), virDomainGetName(dom), from); +#ifndef WIN32 if (console) cmdRunConsole(ctl, dom); +#endif virDomainFree(dom); } else { vshError(ctl, FALSE, _("Failed to create domain from %s"), from); @@ -1083,7 +1081,9 @@ static const vshCmdInfo info_start[] = { static const vshCmdOptDef opts_start[] = { {"domain", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("name of the inactive domain")}, +#ifndef WIN32 {"console", VSH_OT_BOOL, 0, gettext_noop("attach to console after creation")}, +#endif {NULL, 0, 0, NULL} }; @@ -1092,7 +1092,9 @@ cmdStart(vshControl *ctl, const vshCmd *cmd) { virDomainPtr dom; int ret = TRUE; +#ifndef WIN32 int console = vshCommandOptBool(cmd, "console"); +#endif if (!vshConnectionUsability(ctl, ctl->conn, TRUE)) return FALSE; @@ -1109,8 +1111,10 @@ cmdStart(vshControl *ctl, const vshCmd *cmd) if (virDomainCreate(dom) == 0) { vshPrint(ctl, _("Domain %s started\n"), virDomainGetName(dom)); +#ifndef WIN32 if (console) cmdRunConsole(ctl, dom); +#endif } else { vshError(ctl, FALSE, _("Failed to start domain %s"), virDomainGetName(dom)); @@ -6562,6 +6566,8 @@ editReadBackFile (vshControl *ctl, const char *filename) return ret; } + +#ifndef WIN32 /* * "cd" command */ @@ -6603,6 +6609,9 @@ cmdCd(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED) return 0; } +#endif + +#ifndef WIN32 /* * "pwd" command */ @@ -6638,6 +6647,7 @@ cmdPwd(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED) free (cwd); return !err; } +#endif /* * "edit" command @@ -6802,9 +6812,13 @@ static const vshCmdDef commands[] = { {"attach-interface", cmdAttachInterface, opts_attach_interface, info_attach_interface}, {"autostart", cmdAutostart, opts_autostart, info_autostart}, {"capabilities", cmdCapabilities, NULL, info_capabilities}, +#ifndef WIN32 {"cd", cmdCd, opts_cd, info_cd}, +#endif {"connect", cmdConnect, opts_connect, info_connect}, +#ifndef WIN32 {"console", cmdConsole, opts_console, info_console}, +#endif {"create", cmdCreate, opts_create, info_create}, {"start", cmdStart, opts_start, info_start}, {"destroy", cmdDestroy, opts_destroy, info_destroy}, @@ -6882,7 +6896,9 @@ static const vshCmdDef commands[] = { {"pool-undefine", cmdPoolUndefine, opts_pool_undefine, info_pool_undefine}, {"pool-uuid", cmdPoolUuid, opts_pool_uuid, info_pool_uuid}, +#ifndef WIN32 {"pwd", cmdPwd, NULL, info_pwd}, +#endif {"quit", cmdQuit, NULL, info_quit}, {"reboot", cmdReboot, opts_reboot, info_reboot}, {"restore", cmdRestore, opts_restore, info_restore}, diff --git a/src/virterror_internal.h b/src/virterror_internal.h index fe9a96f..da89de7 100644 --- a/src/virterror_internal.h +++ b/src/virterror_internal.h @@ -46,7 +46,7 @@ void virRaiseErrorFull(virConnectPtr conn, int int1, int int2, const char *fmt, ...) - ATTRIBUTE_FORMAT(printf, 13, 14); + ATTRIBUTE_FMT_PRINTF(13, 14); /* Includes 'dom' and 'net' for compatbility, but they're ignored */ #define virRaiseError(conn, dom, net, domain, code, level, \ @@ -61,7 +61,7 @@ void virReportErrorHelper(virConnectPtr conn, int domcode, int errcode, const char *funcname ATTRIBUTE_UNUSED, size_t linenr ATTRIBUTE_UNUSED, const char *fmt, ...) - ATTRIBUTE_FORMAT(printf, 7, 8); + ATTRIBUTE_FMT_PRINTF(7, 8); void virReportSystemErrorFull(virConnectPtr conn, int domcode, @@ -70,7 +70,7 @@ void virReportSystemErrorFull(virConnectPtr conn, const char *funcname, size_t linenr, const char *fmt, ...) - ATTRIBUTE_FORMAT(printf, 7, 8); + ATTRIBUTE_FMT_PRINTF(7, 8); #define virReportSystemError(conn, theerrno, fmt,...) \ virReportSystemErrorFull((conn), \ diff --git a/src/xend_internal.c b/src/xend_internal.c index 55ffd3f..e23ae2b 100644 --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -582,7 +582,7 @@ xend_op(virConnectPtr xend, const char *name, const char *key, ...) * Returns a parsed S-Expression in case of success, NULL in case of failure */ static struct sexpr *sexpr_get(virConnectPtr xend, const char *fmt, ...) - ATTRIBUTE_FORMAT(printf,2,3); + ATTRIBUTE_FMT_PRINTF(2,3); static struct sexpr * sexpr_get(virConnectPtr xend, const char *fmt, ...) -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 1

[libvirt] How to config my VM to use KVM with libvirt?
by Jun Koi 22 Jul '09

22 Jul '09

Hi, I have a VM running under libvirt, and it is currently run with -no-kvm option (I saw that in "ps" output). Now I want to run this VM with KVM. How can I reconfigure it for that? I looked into its configuration file under /etc/libvirt/qemu, but didnt see any option to turn KVM on. Thanks, J

4 7

[libvirt] [PATCH 0/4] Fixes to some bugs encountered testing virInterface*
by Laine Stump 22 Jul '09

22 Jul '09

This series of patches fixes some problems I found while testing the virInterface implementation. Note that the 3rd patch in the series only fixes virInterface-related instances of the problem (releasing the conn lock before reporting errors). If that patch is approved, a similar thing must be done for several other functions in datatypes.c.

3 18

[libvirt] [PATCH] Release conn lock before reporting errors
by Laine Stump 22 Jul '09

22 Jul '09

This is a follow-on to 528d37. It's fixing several other cases in datatypes.c where we try to report an error while holding the conn's lock, which can't work because the error reporting also tries to lock the conn. --- src/datatypes.c | 133 ++++++++++++++++++++++++++++++++++--------------------- 1 files changed, 82 insertions(+), 51 deletions(-) diff --git a/src/datatypes.c b/src/datatypes.c index ba5401d..c2030dd 100644 --- a/src/datatypes.c +++ b/src/datatypes.c @@ -270,11 +270,13 @@ virGetDomain(virConnectPtr conn, const char *name, const unsigned char *uuid) { /* TODO check the UUID */ if (ret == NULL) { if (VIR_ALLOC(ret) < 0) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } ret->name = strdup(name); if (ret->name == NULL) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } @@ -285,6 +287,7 @@ virGetDomain(virConnectPtr conn, const char *name, const unsigned char *uuid) { memcpy(&(ret->uuid[0]), uuid, VIR_UUID_BUFLEN); if (virHashAddEntry(conn->domains, name, ret) < 0) { + virMutexUnlock(&conn->lock); virLibConnError(conn, VIR_ERR_INTERNAL_ERROR, _("failed to add domain to connection hash table")); goto error; @@ -299,7 +302,6 @@ virGetDomain(virConnectPtr conn, const char *name, const unsigned char *uuid) { return(ret); error: - virMutexUnlock(&conn->lock); if (ret != NULL) { VIR_FREE(ret->name); VIR_FREE(ret); @@ -325,24 +327,28 @@ virReleaseDomain(virDomainPtr domain) { DEBUG("release domain %p %s", domain, domain->name); /* TODO search by UUID first as they are better differenciators */ - if (virHashRemoveEntry(conn->domains, domain->name, NULL) < 0) + if (virHashRemoveEntry(conn->domains, domain->name, NULL) < 0) { + virMutexUnlock(&conn->lock); virLibConnError(conn, VIR_ERR_INTERNAL_ERROR, _("domain missing from connection hash table")); + conn = NULL; + } domain->magic = -1; domain->id = -1; VIR_FREE(domain->name); VIR_FREE(domain); - DEBUG("unref connection %p %d", conn, conn->refs); - conn->refs--; - if (conn->refs == 0) { - virReleaseConnect(conn); - /* Already unlocked mutex */ - return; + if (conn) { + DEBUG("unref connection %p %d", conn, conn->refs); + conn->refs--; + if (conn->refs == 0) { + virReleaseConnect(conn); + /* Already unlocked mutex */ + return; + } + virMutexUnlock(&conn->lock); } - - virMutexUnlock(&conn->lock); } @@ -406,11 +412,13 @@ virGetNetwork(virConnectPtr conn, const char *name, const unsigned char *uuid) { /* TODO check the UUID */ if (ret == NULL) { if (VIR_ALLOC(ret) < 0) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } ret->name = strdup(name); if (ret->name == NULL) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } @@ -420,6 +428,7 @@ virGetNetwork(virConnectPtr conn, const char *name, const unsigned char *uuid) { memcpy(&(ret->uuid[0]), uuid, VIR_UUID_BUFLEN); if (virHashAddEntry(conn->networks, name, ret) < 0) { + virMutexUnlock(&conn->lock); virLibConnError(conn, VIR_ERR_INTERNAL_ERROR, _("failed to add network to connection hash table")); goto error; @@ -431,7 +440,6 @@ virGetNetwork(virConnectPtr conn, const char *name, const unsigned char *uuid) { return(ret); error: - virMutexUnlock(&conn->lock); if (ret != NULL) { VIR_FREE(ret->name); VIR_FREE(ret); @@ -457,23 +465,27 @@ virReleaseNetwork(virNetworkPtr network) { DEBUG("release network %p %s", network, network->name); /* TODO search by UUID first as they are better differenciators */ - if (virHashRemoveEntry(conn->networks, network->name, NULL) < 0) + if (virHashRemoveEntry(conn->networks, network->name, NULL) < 0) { + virMutexUnlock(&conn->lock); virLibConnError(conn, VIR_ERR_INTERNAL_ERROR, _("network missing from connection hash table")); + conn = NULL; + } network->magic = -1; VIR_FREE(network->name); VIR_FREE(network); - DEBUG("unref connection %p %d", conn, conn->refs); - conn->refs--; - if (conn->refs == 0) { - virReleaseConnect(conn); - /* Already unlocked mutex */ - return; + if (conn) { + DEBUG("unref connection %p %d", conn, conn->refs); + conn->refs--; + if (conn->refs == 0) { + virReleaseConnect(conn); + /* Already unlocked mutex */ + return; + } + virMutexUnlock(&conn->lock); } - - virMutexUnlock(&conn->lock); } @@ -714,11 +726,13 @@ virGetStoragePool(virConnectPtr conn, const char *name, const unsigned char *uui /* TODO check the UUID */ if (ret == NULL) { if (VIR_ALLOC(ret) < 0) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } ret->name = strdup(name); if (ret->name == NULL) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } @@ -728,6 +742,7 @@ virGetStoragePool(virConnectPtr conn, const char *name, const unsigned char *uui memcpy(&(ret->uuid[0]), uuid, VIR_UUID_BUFLEN); if (virHashAddEntry(conn->storagePools, name, ret) < 0) { + virMutexUnlock(&conn->lock); virLibConnError(conn, VIR_ERR_INTERNAL_ERROR, _("failed to add storage pool to connection hash table")); goto error; @@ -739,7 +754,6 @@ virGetStoragePool(virConnectPtr conn, const char *name, const unsigned char *uui return(ret); error: - virMutexUnlock(&conn->lock); if (ret != NULL) { VIR_FREE(ret->name); VIR_FREE(ret); @@ -766,23 +780,27 @@ virReleaseStoragePool(virStoragePoolPtr pool) { DEBUG("release pool %p %s", pool, pool->name); /* TODO search by UUID first as they are better differenciators */ - if (virHashRemoveEntry(conn->storagePools, pool->name, NULL) < 0) + if (virHashRemoveEntry(conn->storagePools, pool->name, NULL) < 0) { + virMutexUnlock(&conn->lock); virLibConnError(conn, VIR_ERR_INTERNAL_ERROR, _("pool missing from connection hash table")); + conn = NULL; + } pool->magic = -1; VIR_FREE(pool->name); VIR_FREE(pool); - DEBUG("unref connection %p %d", conn, conn->refs); - conn->refs--; - if (conn->refs == 0) { - virReleaseConnect(conn); - /* Already unlocked mutex */ - return; + if (conn) { + DEBUG("unref connection %p %d", conn, conn->refs); + conn->refs--; + if (conn->refs == 0) { + virReleaseConnect(conn); + /* Already unlocked mutex */ + return; + } + virMutexUnlock(&conn->lock); } - - virMutexUnlock(&conn->lock); } @@ -845,16 +863,19 @@ virGetStorageVol(virConnectPtr conn, const char *pool, const char *name, const c ret = (virStorageVolPtr) virHashLookup(conn->storageVols, key); if (ret == NULL) { if (VIR_ALLOC(ret) < 0) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } ret->pool = strdup(pool); if (ret->pool == NULL) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } ret->name = strdup(name); if (ret->name == NULL) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } @@ -864,6 +885,7 @@ virGetStorageVol(virConnectPtr conn, const char *pool, const char *name, const c ret->conn = conn; if (virHashAddEntry(conn->storageVols, key, ret) < 0) { + virMutexUnlock(&conn->lock); virLibConnError(conn, VIR_ERR_INTERNAL_ERROR, _("failed to add storage vol to connection hash table")); goto error; @@ -875,7 +897,6 @@ virGetStorageVol(virConnectPtr conn, const char *pool, const char *name, const c return(ret); error: - virMutexUnlock(&conn->lock); if (ret != NULL) { VIR_FREE(ret->name); VIR_FREE(ret->pool); @@ -903,24 +924,28 @@ virReleaseStorageVol(virStorageVolPtr vol) { DEBUG("release vol %p %s", vol, vol->name); /* TODO search by UUID first as they are better differenciators */ - if (virHashRemoveEntry(conn->storageVols, vol->key, NULL) < 0) + if (virHashRemoveEntry(conn->storageVols, vol->key, NULL) < 0) { + virMutexUnlock(&conn->lock); virLibConnError(conn, VIR_ERR_INTERNAL_ERROR, _("vol missing from connection hash table")); + conn = NULL; + } vol->magic = -1; VIR_FREE(vol->name); VIR_FREE(vol->pool); VIR_FREE(vol); - DEBUG("unref connection %p %d", conn, conn->refs); - conn->refs--; - if (conn->refs == 0) { - virReleaseConnect(conn); - /* Already unlocked mutex */ - return; + if (conn) { + DEBUG("unref connection %p %d", conn, conn->refs); + conn->refs--; + if (conn->refs == 0) { + virReleaseConnect(conn); + /* Already unlocked mutex */ + return; + } + virMutexUnlock(&conn->lock); } - - virMutexUnlock(&conn->lock); } @@ -981,7 +1006,8 @@ virGetNodeDevice(virConnectPtr conn, const char *name) ret = (virNodeDevicePtr) virHashLookup(conn->nodeDevices, name); if (ret == NULL) { - if (VIR_ALLOC(ret) < 0) { + if (VIR_ALLOC(ret) < 0) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } @@ -989,11 +1015,13 @@ virGetNodeDevice(virConnectPtr conn, const char *name) ret->conn = conn; ret->name = strdup(name); if (ret->name == NULL) { + virMutexUnlock(&conn->lock); virReportOOMError(conn); goto error; } if (virHashAddEntry(conn->nodeDevices, name, ret) < 0) { + virMutexUnlock(&conn->lock); virLibConnError(conn, VIR_ERR_INTERNAL_ERROR, _("failed to add node dev to conn hash table")); goto error; @@ -1005,7 +1033,6 @@ virGetNodeDevice(virConnectPtr conn, const char *name) return(ret); error: - virMutexUnlock(&conn->lock); if (ret != NULL) { VIR_FREE(ret->name); VIR_FREE(ret); @@ -1031,24 +1058,28 @@ virReleaseNodeDevice(virNodeDevicePtr dev) { virConnectPtr conn = dev->conn; DEBUG("release dev %p %s", dev, dev->name); - if (virHashRemoveEntry(conn->nodeDevices, dev->name, NULL) < 0) + if (virHashRemoveEntry(conn->nodeDevices, dev->name, NULL) < 0) { + virMutexUnlock(&conn->lock); virLibConnError(conn, VIR_ERR_INTERNAL_ERROR, _("dev missing from connection hash table")); + conn = NULL; + } dev->magic = -1; VIR_FREE(dev->name); VIR_FREE(dev->parent); VIR_FREE(dev); - DEBUG("unref connection %p %d", conn, conn->refs); - conn->refs--; - if (conn->refs == 0) { - virReleaseConnect(conn); - /* Already unlocked mutex */ - return; + if (conn) { + DEBUG("unref connection %p %d", conn, conn->refs); + conn->refs--; + if (conn->refs == 0) { + virReleaseConnect(conn); + /* Already unlocked mutex */ + return; + } + virMutexUnlock(&conn->lock); } - - virMutexUnlock(&conn->lock); } -- 1.6.0.6

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[libvirt] [PATCH] Rename remaining occurrences of 'interface' to avoid MINGW32 build problem
by Laine Stump 22 Jul '09

22 Jul '09

--- qemud/remote.c | 2 +- src/interface_conf.c | 34 +++++++++++++++++----------------- src/interface_conf.h | 4 ++-- src/veth.c | 6 +++--- src/veth.h | 2 +- 5 files changed, 24 insertions(+), 24 deletions(-) diff --git a/qemud/remote.c b/qemud/remote.c index 651e9fb..d32d513 100644 --- a/qemud/remote.c +++ b/qemud/remote.c @@ -61,7 +61,7 @@ static virDomainPtr get_nonnull_domain (virConnectPtr conn, remote_nonnull_domain domain); static virNetworkPtr get_nonnull_network (virConnectPtr conn, remote_nonnull_network network); -static virInterfacePtr get_nonnull_interface (virConnectPtr conn, remote_nonnull_interface interface); +static virInterfacePtr get_nonnull_interface (virConnectPtr conn, remote_nonnull_interface iface); static virStoragePoolPtr get_nonnull_storage_pool (virConnectPtr conn, remote_nonnull_storage_pool pool); static virStorageVolPtr get_nonnull_storage_vol (virConnectPtr conn, remote_nonnull_storage_vol vol); static void make_nonnull_domain (remote_nonnull_domain *dom_dst, virDomainPtr dom_src); diff --git a/src/interface_conf.c b/src/interface_conf.c index 1cc9f36..c2e8d07 100644 --- a/src/interface_conf.c +++ b/src/interface_conf.c @@ -1207,51 +1207,51 @@ virInterfaceObjPtr virInterfaceAssignDef(virConnectPtr conn, virInterfaceObjListPtr interfaces, const virInterfaceDefPtr def) { - virInterfaceObjPtr interface; + virInterfaceObjPtr iface; - if ((interface = virInterfaceFindByName(interfaces, def->name))) { - if (interface->def) - virInterfaceDefFree(interface->def); - interface->def = def; + if ((iface = virInterfaceFindByName(interfaces, def->name))) { + if (iface->def) + virInterfaceDefFree(iface->def); + iface->def = def; - return interface; + return iface; } - if (VIR_ALLOC(interface) < 0) { + if (VIR_ALLOC(iface) < 0) { virReportOOMError(conn); return NULL; } - if (virMutexInit(&interface->lock) < 0) { + if (virMutexInit(&iface->lock) < 0) { virInterfaceReportError(conn, VIR_ERR_INTERNAL_ERROR, "%s", _("cannot initialize mutex")); - VIR_FREE(interface); + VIR_FREE(iface); return NULL; } - virInterfaceObjLock(interface); - interface->def = def; + virInterfaceObjLock(iface); + iface->def = def; if (VIR_REALLOC_N(interfaces->objs, interfaces->count + 1) < 0) { virReportOOMError(conn); - VIR_FREE(interface); + VIR_FREE(iface); return NULL; } - interfaces->objs[interfaces->count] = interface; + interfaces->objs[interfaces->count] = iface; interfaces->count++; - return interface; + return iface; } void virInterfaceRemove(virInterfaceObjListPtr interfaces, - const virInterfaceObjPtr interface) + const virInterfaceObjPtr iface) { unsigned int i; - virInterfaceObjUnlock(interface); + virInterfaceObjUnlock(iface); for (i = 0 ; i < interfaces->count ; i++) { virInterfaceObjLock(interfaces->objs[i]); - if (interfaces->objs[i] == interface) { + if (interfaces->objs[i] == iface) { virInterfaceObjUnlock(interfaces->objs[i]); virInterfaceObjFree(interfaces->objs[i]); diff --git a/src/interface_conf.h b/src/interface_conf.h index aea1208..bb9dce4 100644 --- a/src/interface_conf.h +++ b/src/interface_conf.h @@ -186,14 +186,14 @@ virInterfaceObjPtr virInterfaceFindByName(const virInterfaceObjListPtr void virInterfaceDefFree(virInterfaceDefPtr def); -void virInterfaceObjFree(virInterfaceObjPtr interface); +void virInterfaceObjFree(virInterfaceObjPtr iface); void virInterfaceObjListFree(virInterfaceObjListPtr vms); virInterfaceObjPtr virInterfaceAssignDef(virConnectPtr conn, virInterfaceObjListPtr interfaces, const virInterfaceDefPtr def); void virInterfaceRemove(virInterfaceObjListPtr interfaces, - const virInterfaceObjPtr interface); + const virInterfaceObjPtr iface); virInterfaceDefPtr virInterfaceDefParseString(virConnectPtr conn, const char *xmlStr); diff --git a/src/veth.c b/src/veth.c index 04e68b2..71d7de6 100644 --- a/src/veth.c +++ b/src/veth.c @@ -191,16 +191,16 @@ error_out: * * Returns 0 on success or -1 in case of error */ -int moveInterfaceToNetNs(const char* interface, int pidInNs) +int moveInterfaceToNetNs(const char* iface, int pidInNs) { int rc = -1; char *pid = NULL; const char *argv[] = { - "ip", "link", "set", interface, "netns", NULL, NULL + "ip", "link", "set", iface, "netns", NULL, NULL }; int cmdResult; - if (NULL == interface) { + if (NULL == iface) { goto error_out; } diff --git a/src/veth.h b/src/veth.h index 43181cd..429eb3d 100644 --- a/src/veth.h +++ b/src/veth.h @@ -19,6 +19,6 @@ int vethCreate(char* veth1, int veth1MaxLen, char* veth2, int veth2MaxLen); int vethDelete(const char* veth); int vethInterfaceUpOrDown(const char* veth, int upOrDown); -int moveInterfaceToNetNs(const char *interface, int pidInNs); +int moveInterfaceToNetNs(const char *iface, int pidInNs); #endif /* VETH_H */ -- 1.6.0.6

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[libvirt] managing libvirt users in a one-server context
by Juan Miscaro 22 Jul '09

22 Jul '09

I have a single KVM server on which I want to allow co-workers the ability to create vm's. Here are my criteria in order of importance: 1. I do not want to have to grant all users root privileges. 2. I would like the vm's to use the host's bridge (br0) by default. 3. I do not want one user to be able to start, stop, or (re)define the vm's created by another user by default. 4. I would like a user to be able grant access to another user. Mostly for viewing. Can I do all this with hardcoded usernames and passwords? If not, what is my best option? -- /jm

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[libvirt] Bugfix for failing to reconnect to vbox:///session
by Pritesh Kothari 22 Jul '09

22 Jul '09

Hi All, While reconnecting to vbox:///session, since the VBoxCGlueInit() is not intialized, the g_pfnGetFunctions is NULL and thus reconnection fails with SEGV. Fixed this in the patch below. Regards, Pritesh

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[libvirt] [PATCH 0/1] RFC Fix problems with TLS connections & threading
by Daniel P. Berrange 22 Jul '09

22 Jul '09

Even though we are not using gcrypt directly in any libvirt code, it turns out that we are responsible for initializing its thread support, since its used by gnutls. This really sucks in terms of library API encapsulation. It is also a little annoying if libvirt is used within an app that already uses gnutls/gcrypt, because there is no checking in gcrypt to see if threading ops are already set, so our call would override any pre-existing initialization, and an apps own call would override us. The only other option I see is to punt on the whole problem and declare apps are responsible for initializing gcrypt, but then this sucks too because it means apps have to presume we're built with gnutls, and not nss - not that we support nss currently. This bug only really impacts the libvirt client if using multiple virConnectPtr objects from separate threads with a TLS based URI. The server isn't impacted because all TLS I/O is done from the single I/O thread, and not any of the RPC workers. Daniel P. Berrange (1): Initialize gcrypt threading src/remote_internal.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 43 insertions(+), 0 deletions(-)

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[libvirt] [PATCH] Support physical memory in virDomainMemoryPeek()
by Nguyen Anh Quynh 22 Jul '09

22 Jul '09

Hi, This patch provides support for physical memory in virDomainMemoryPeek(). Please consider applying. Signed-off-by: Nguyen Anh Quynh <aquynh(a)gmail.com> # diffstat pmemsave3.diff docs/libvirt-api.xml | 2 +- include/libvirt/libvirt.h.in | 1 + src/libvirt.c | 14 +++++--------- src/qemu_driver.c | 17 ++++++++--------- 4 files changed, 15 insertions(+), 19 deletions(-)

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[libvirt] [PATCH 00/14] Add support for qemu NIC hotplug
by Mark McLoughlin 22 Jul '09

22 Jul '09

Hey, Here's a series of patches to (mostly) support NIC hotplug with qemu 0.10.x or later. qemu-0.10.0 introduced the host_net_add monitor command without which we cannot do NIC hotplug, so we do not try and support hotplug with older versions of KVM. With qemu-0.11.0 we will be able to pass a tap file descriptor over the monitor, but until then we cannot support 'bridge' and 'network' type interfaces. A forthcoming patch series will rectify that. Cheers, Mark.

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