/* * internal.h: internal definitions just used by code from the library */ #ifndef __VIR_INTERNAL_H__ #define __VIR_INTERNAL_H__ #include #include #ifdef HAVE_SYS_SYSLIMITS_H #include #endif #ifdef HAVE_PTHREAD_H #include #define PTHREAD_MUTEX_T(v) pthread_mutex_t v #else /* Mutex functions disappear if we don't have pthread. */ #define PTHREAD_MUTEX_T(v) /*empty*/ #define pthread_mutex_init(lk,p) /*empty*/ #define pthread_mutex_destroy(lk) /*empty*/ #define pthread_mutex_lock(lk) /*empty*/ #define pthread_mutex_unlock(lk) /*empty*/ #endif #include "gettext.h" #include "hash.h" #include "libvirt/libvirt.h" #include "libvirt/virterror.h" #include "driver.h" #ifdef __cplusplus extern "C" { #endif /* On architectures which lack these limits, define them (ie. Cygwin). * Note that the libvirt code should be robust enough to handle the * case where actual value is longer than these limits (eg. by setting * length correctly in second argument to gethostname and by always * using strncpy instead of strcpy). */ #ifndef HOST_NAME_MAX #define HOST_NAME_MAX 256 #endif #ifndef IF_NAMESIZE #define IF_NAMESIZE 16 #endif #ifndef INET_ADDRSTRLEN #define INET_ADDRSTRLEN 16 #endif #define _(str) dgettext(GETTEXT_PACKAGE, (str)) #define N_(str) dgettext(GETTEXT_PACKAGE, (str)) /* String equality tests, suggested by Jim Meyering. */ #define STREQ(a,b) (strcmp((a),(b)) == 0) #define STRCASEEQ(a,b) (strcasecmp((a),(b)) == 0) #define STRNEQ(a,b) (strcmp((a),(b)) != 0) #define STRCASENEQ(a,b) (strcasecmp((a),(b)) != 0) #define STREQLEN(a,b,n) (strncmp((a),(b),(n)) == 0) #define STRCASEEQLEN(a,b,n) (strncasecmp((a),(b),(n)) == 0) #define STRNEQLEN(a,b,n) (strncmp((a),(b),(n)) != 0) #define STRCASENEQLEN(a,b,n) (strncasecmp((a),(b),(n)) != 0) #define STRPREFIX(a,b) (strncmp((a),(b),strlen((b))) == 0) #define NUL_TERMINATE(buf) do { (buf)[sizeof(buf)-1] = '\0'; } while (0) #define ARRAY_CARDINALITY(Array) (sizeof (Array) / sizeof *(Array)) /* If configured with --enable-debug=yes then library calls * are printed to stderr for debugging. */ #ifdef ENABLE_DEBUG extern int debugFlag; #define VIR_DEBUG(category, fmt,...) \ do { if (debugFlag) fprintf (stderr, "DEBUG: %s: %s (" fmt ")\n", category, __func__, __VA_ARGS__); } while (0) #else #define VIR_DEBUG(category, fmt,...) \ do { } while (0) #endif /* !ENABLE_DEBUG */ /* C99 uses __func__. __FUNCTION__ is legacy. */ #ifndef __GNUC__ #define __FUNCTION__ __func__ #endif #ifdef __GNUC__ #ifndef __GNUC_PREREQ #define __GNUC_PREREQ(maj,min) 0 #endif /** * ATTRIBUTE_UNUSED: * * Macro to flag conciously unused parameters to functions */ #ifndef ATTRIBUTE_UNUSED #define ATTRIBUTE_UNUSED __attribute__((__unused__)) #endif /** * ATTRIBUTE_FORMAT * * Macro used to check printf/scanf-like functions, if compiling * with gcc. */ #ifndef ATTRIBUTE_FORMAT #define ATTRIBUTE_FORMAT(args...) __attribute__((__format__ (args))) #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 #define ATTRIBUTE_UNUSED #define ATTRIBUTE_FORMAT(...) #define ATTRIBUTE_RETURN_CHECK #endif /* __GNUC__ */ /** * TODO: * * macro to flag unimplemented blocks */ #define TODO \ fprintf(stderr, "Unimplemented block at %s:%d\n", \ __FILE__, __LINE__); /** * VIR_CONNECT_MAGIC: * * magic value used to protect the API when pointers to connection structures * are passed down by the uers. */ #define VIR_CONNECT_MAGIC 0x4F23DEAD #define VIR_IS_CONNECT(obj) ((obj) && (obj)->magic==VIR_CONNECT_MAGIC) /** * VIR_DOMAIN_MAGIC: * * magic value used to protect the API when pointers to domain structures * are passed down by the users. */ #define VIR_DOMAIN_MAGIC 0xDEAD4321 #define VIR_IS_DOMAIN(obj) ((obj) && (obj)->magic==VIR_DOMAIN_MAGIC) #define VIR_IS_CONNECTED_DOMAIN(obj) (VIR_IS_DOMAIN(obj) && VIR_IS_CONNECT((obj)->conn)) /** * VIR_NETWORK_MAGIC: * * magic value used to protect the API when pointers to network structures * are passed down by the users. */ #define VIR_NETWORK_MAGIC 0xDEAD1234 #define VIR_IS_NETWORK(obj) ((obj) && (obj)->magic==VIR_NETWORK_MAGIC) #define VIR_IS_CONNECTED_NETWORK(obj) (VIR_IS_NETWORK(obj) && VIR_IS_CONNECT((obj)->conn)) /** * VIR_STORAGE_POOL_MAGIC: * * magic value used to protect the API when pointers to storage pool structures * are passed down by the users. */ #define VIR_STORAGE_POOL_MAGIC 0xDEAD5678 #define VIR_IS_STORAGE_POOL(obj) ((obj) && (obj)->magic==VIR_STORAGE_POOL_MAGIC) #define VIR_IS_CONNECTED_STORAGE_POOL(obj) (VIR_IS_STORAGE_POOL(obj) && VIR_IS_CONNECT((obj)->conn)) /** * VIR_STORAGE_VOL_MAGIC: * * magic value used to protect the API when pointers to storage vol structures * are passed down by the users. */ #define VIR_STORAGE_VOL_MAGIC 0xDEAD8765 #define VIR_IS_STORAGE_VOL(obj) ((obj) && (obj)->magic==VIR_STORAGE_VOL_MAGIC) #define VIR_IS_CONNECTED_STORAGE_VOL(obj) (VIR_IS_STORAGE_VOL(obj) && VIR_IS_CONNECT((obj)->conn)) /* * arbitrary limitations */ #define MAX_DRIVERS 10 #define MIN_XEN_GUEST_SIZE 64 /* 64 megabytes */ /** * _virConnect: * * Internal structure associated to a connection */ struct _virConnect { unsigned int magic; /* specific value to check */ int flags; /* a set of connection flags */ char *name; /* connection URI */ /* The underlying hypervisor driver and network driver. */ virDriverPtr driver; virNetworkDriverPtr networkDriver; virStorageDriverPtr storageDriver; /* Private data pointer which can be used by driver and * network driver as they wish. * NB: 'private' is a reserved word in C++. */ void * privateData; void * networkPrivateData; void * storagePrivateData; /* Per-connection error. */ virError err; /* the last error */ virErrorFunc handler; /* associated handlet */ void *userData; /* the user data */ /* * The lock mutex must be acquired before accessing/changing * any of members following this point, or changing the ref * count of any virDomain/virNetwork object associated with * this connection */ PTHREAD_MUTEX_T (lock); virHashTablePtr domains; /* hash table for known domains */ virHashTablePtr networks; /* hash table for known domains */ virHashTablePtr storagePools;/* hash table for known storage pools */ virHashTablePtr storageVols;/* hash table for known storage vols */ int refs; /* reference count */ }; /** * _virDomain: * * Internal structure associated to a domain */ struct _virDomain { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ char *name; /* the domain external name */ int id; /* the domain ID */ unsigned char uuid[VIR_UUID_BUFLEN]; /* the domain unique identifier */ }; /** * _virNetwork: * * Internal structure associated to a domain */ struct _virNetwork { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ char *name; /* the network external name */ unsigned char uuid[VIR_UUID_BUFLEN]; /* the network unique identifier */ }; /** * _virStoragePool: * * Internal structure associated to a storage pool */ struct _virStoragePool { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ char *name; /* the storage pool external name */ unsigned char uuid[VIR_UUID_BUFLEN]; /* the storage pool unique identifier */ }; /** * _virStorageVol: * * Internal structure associated to a storage volume */ struct _virStorageVol { unsigned int magic; /* specific value to check */ int refs; /* reference count */ virConnectPtr conn; /* pointer back to the connection */ char *pool; /* Pool name of owner */ char *name; /* the storage vol external name */ /* XXX currently abusing path for this. Ought not to be so evil */ char key[PATH_MAX]; /* unique key for storage vol */ }; /************************************************************************ * * * API for error handling * * * ************************************************************************/ extern virError __lastErr; void __virRaiseError(virConnectPtr conn, virDomainPtr dom, virNetworkPtr net, int domain, int code, virErrorLevel level, const char *str1, const char *str2, const char *str3, int int1, int int2, const char *msg, ...) ATTRIBUTE_FORMAT(printf, 12, 13); const char *__virErrorMsg(virErrorNumber error, const char *info); /************************************************************************ * * * API for domain/connections (de)allocations and lookups * * * ************************************************************************/ virConnectPtr virGetConnect (void); int virUnrefConnect (virConnectPtr conn); virDomainPtr __virGetDomain (virConnectPtr conn, const char *name, const unsigned char *uuid); int virUnrefDomain (virDomainPtr domain); virNetworkPtr __virGetNetwork (virConnectPtr conn, const char *name, const unsigned char *uuid); int virUnrefNetwork (virNetworkPtr network); virStoragePoolPtr __virGetStoragePool (virConnectPtr conn, const char *name, const unsigned char *uuid); int virUnrefStoragePool (virStoragePoolPtr pool); virStorageVolPtr __virGetStorageVol (virConnectPtr conn, const char *pool, const char *name, const char *key); int virUnrefStorageVol (virStorageVolPtr vol); #define virGetDomain(c,n,u) __virGetDomain((c),(n),(u)) #define virGetNetwork(c,n,u) __virGetNetwork((c),(n),(u)) #define virGetStoragePool(c,n,u) __virGetStoragePool((c),(n),(u)) #define virGetStorageVol(c,p,n,u) __virGetStorageVol((c),(p),(n),(u)) int __virStateInitialize(void); int __virStateCleanup(void); int __virStateReload(void); int __virStateActive(void); #define virStateInitialize() __virStateInitialize() #define virStateCleanup() __virStateCleanup() #define virStateReload() __virStateReload() #define virStateActive() __virStateActive() int __virDrvSupportsFeature (virConnectPtr conn, int feature); int __virDomainMigratePrepare (virConnectPtr dconn, char **cookie, int *cookielen, const char *uri_in, char **uri_out, unsigned long flags, const char *dname, unsigned long bandwidth); int __virDomainMigratePerform (virDomainPtr domain, const char *cookie, int cookielen, const char *uri, unsigned long flags, const char *dname, unsigned long bandwidth); virDomainPtr __virDomainMigrateFinish (virConnectPtr dconn, const char *dname, const char *cookie, int cookielen, const char *uri, unsigned long flags); #ifdef __cplusplus } #endif /* __cplusplus */ #endif /* __VIR_INTERNAL_H__ */