| /*------------------------------------------------------------------------- |
| * |
| * libpq-int.h |
| * This file contains internal definitions meant to be used only by |
| * the frontend libpq library, not by applications that call it. |
| * |
| * An application can include this file if it wants to bypass the |
| * official API defined by libpq-fe.h, but code that does so is much |
| * more likely to break across PostgreSQL releases than code that uses |
| * only the official API. |
| * |
| * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group |
| * Portions Copyright (c) 1994, Regents of the University of California |
| * |
| * $PostgreSQL: pgsql/src/interfaces/libpq/libpq-int.h,v 1.143 2009/06/23 18:13:23 mha Exp $ |
| * |
| *------------------------------------------------------------------------- |
| */ |
| |
| #ifndef LIBPQ_INT_H |
| #define LIBPQ_INT_H |
| |
| /* We assume libpq-fe.h has already been included. */ |
| #include "postgres_fe.h" |
| #include "libpq-events.h" |
| |
| #include <time.h> |
| #include <sys/types.h> |
| #ifndef WIN32 |
| #include <sys/time.h> |
| #endif |
| |
| #ifdef ENABLE_THREAD_SAFETY |
| #ifdef WIN32 |
| #include "pthread-win32.h" |
| #else |
| #include <pthread.h> |
| #endif |
| #include <signal.h> |
| #endif |
| |
| /* include stuff common to fe and be */ |
| #include "getaddrinfo.h" |
| #include "libpq/pqcomm.h" |
| /* include stuff found in fe only */ |
| #include "pqexpbuffer.h" |
| |
| #ifdef ENABLE_GSS |
| #if defined(HAVE_GSSAPI_H) |
| #include <gssapi.h> |
| #else |
| #include <gssapi/gssapi.h> |
| #endif |
| #endif |
| |
| #ifdef ENABLE_SSPI |
| #define SECURITY_WIN32 |
| #if defined(WIN32) && !defined(WIN32_ONLY_COMPILER) |
| #include <ntsecapi.h> |
| #endif |
| #include <security.h> |
| #undef SECURITY_WIN32 |
| |
| #ifndef ENABLE_GSS |
| /* |
| * Define a fake structure compatible with GSSAPI on Unix. |
| */ |
| typedef struct |
| { |
| void *value; |
| int length; |
| } gss_buffer_desc; |
| #endif |
| #endif /* ENABLE_SSPI */ |
| |
| #ifdef USE_SSL |
| #include <openssl/ssl.h> |
| #include <openssl/err.h> |
| |
| #if (SSLEAY_VERSION_NUMBER >= 0x00907000L) && !defined(OPENSSL_NO_ENGINE) |
| #define USE_SSL_ENGINE |
| #endif |
| |
| #endif /* USE_SSL */ |
| |
| /* |
| * POSTGRES backend dependent Constants. |
| */ |
| |
| /* |
| * Note: GPDB uses 72 for COMPLETION_TAG_BUFSIZE, PostgreSQL uses 64. |
| * Does this cause a problem? It seems like it will if any application is compiled with |
| * the PostgreSQL header files, and "cheats" by looking directly in to the pg_result struct, |
| * instead of accessing the struct through the normal functions. |
| * |
| * If we set this to 64, we avoid that problem, but strings copied into cmdStatus might overflow |
| * the field, so we'd need to check on that. And the number of rows could get truncated... Ugh. |
| */ |
| |
| #define CMDSTATUS_LEN 72 /* should match COMPLETION_TAG_BUFSIZE */ |
| |
| /* |
| * PGresult and the subsidiary types PGresAttDesc, PGresAttValue |
| * represent the result of a query (or more precisely, of a single SQL |
| * command --- a query string given to PQexec can contain multiple commands). |
| * Note we assume that a single command can return at most one tuple group, |
| * hence there is no need for multiple descriptor sets. |
| */ |
| |
| /* Subsidiary-storage management structure for PGresult. |
| * See space management routines in fe-exec.c for details. |
| * Note that space[k] refers to the k'th byte starting from the physical |
| * head of the block --- it's a union, not a struct! |
| */ |
| typedef union pgresult_data PGresult_data; |
| |
| union pgresult_data |
| { |
| PGresult_data *next; /* link to next block, or NULL */ |
| char space[1]; /* dummy for accessing block as bytes */ |
| }; |
| |
| /* Data about a single parameter of a prepared statement */ |
| typedef struct pgresParamDesc |
| { |
| Oid typid; /* type id */ |
| } PGresParamDesc; |
| |
| /* |
| * Data for a single attribute of a single tuple |
| * |
| * We use char* for Attribute values. |
| * |
| * The value pointer always points to a null-terminated area; we add a |
| * null (zero) byte after whatever the backend sends us. This is only |
| * particularly useful for text values ... with a binary value, the |
| * value might have embedded nulls, so the application can't use C string |
| * operators on it. But we add a null anyway for consistency. |
| * Note that the value itself does not contain a length word. |
| * |
| * A NULL attribute is a special case in two ways: its len field is NULL_LEN |
| * and its value field points to null_field in the owning PGresult. All the |
| * NULL attributes in a query result point to the same place (there's no need |
| * to store a null string separately for each one). |
| */ |
| |
| #define NULL_LEN (-1) /* pg_result len for NULL value */ |
| |
| typedef struct pgresAttValue |
| { |
| int len; /* length in bytes of the value */ |
| char *value; /* actual value, plus terminating zero byte */ |
| } PGresAttValue; |
| |
| /* Typedef for message-field list entries */ |
| typedef struct pgMessageField |
| { |
| struct pgMessageField *next; /* list link */ |
| char code; /* field code */ |
| char contents[1]; /* field value (VARIABLE LENGTH) */ |
| } PGMessageField; |
| |
| /* Fields needed for notice handling */ |
| typedef struct |
| { |
| PQnoticeReceiver noticeRec; /* notice message receiver */ |
| void *noticeRecArg; |
| PQnoticeProcessor noticeProc; /* notice message processor */ |
| void *noticeProcArg; |
| } PGNoticeHooks; |
| |
| typedef struct PGEvent |
| { |
| PGEventProc proc; /* the function to call on events */ |
| char *name; /* used only for error messages */ |
| void *passThrough; /* pointer supplied at registration time */ |
| void *data; /* optional state (instance) data */ |
| bool resultInitialized; /* T if RESULTCREATE/COPY succeeded */ |
| } PGEvent; |
| |
| struct pg_result |
| { |
| int ntups; |
| int numAttributes; |
| PGresAttDesc *attDescs; |
| PGresAttValue **tuples; /* each PGresTuple is an array of |
| * PGresAttValue's */ |
| int tupArrSize; /* allocated size of tuples array */ |
| int numParameters; |
| PGresParamDesc *paramDescs; |
| ExecStatusType resultStatus; |
| char cmdStatus[CMDSTATUS_LEN]; /* cmd status from the query */ |
| int binary; /* binary tuple values if binary == 1, |
| * otherwise text */ |
| |
| /* |
| * These fields are copied from the originating PGconn, so that operations |
| * on the PGresult don't have to reference the PGconn. |
| */ |
| PGNoticeHooks noticeHooks; |
| PGEvent *events; |
| int nEvents; |
| int client_encoding; /* encoding id */ |
| |
| /* |
| * Error information (all NULL if not an error result). errMsg is the |
| * "overall" error message returned by PQresultErrorMessage. If we have |
| * per-field info then it is stored in a linked list. |
| */ |
| char *errMsg; /* error message, or NULL if no error */ |
| PGMessageField *errFields; /* message broken into fields */ |
| |
| /* All NULL attributes in the query result point to this null string */ |
| char null_field[1]; |
| |
| /* |
| * Space management information. Note that attDescs and error stuff, if |
| * not null, point into allocated blocks. But tuples points to a |
| * separately malloc'd block, so that we can realloc it. |
| */ |
| PGresult_data *curBlock; /* most recently allocated block */ |
| int curOffset; /* start offset of free space in block */ |
| int spaceLeft; /* number of free bytes remaining in block */ |
| }; |
| |
| /* PGAsyncStatusType defines the state of the query-execution state machine */ |
| typedef enum |
| { |
| PGASYNC_IDLE, /* nothing's happening, dude */ |
| PGASYNC_BUSY, /* query in progress */ |
| PGASYNC_READY, /* result ready for PQgetResult */ |
| PGASYNC_COPY_IN, /* Copy In data transfer in progress */ |
| PGASYNC_COPY_OUT /* Copy Out data transfer in progress */ |
| } PGAsyncStatusType; |
| |
| /* PGQueryClass tracks which query protocol we are now executing */ |
| typedef enum |
| { |
| PGQUERY_SIMPLE, /* simple Query protocol (PQexec) */ |
| PGQUERY_EXTENDED, /* full Extended protocol (PQexecParams) */ |
| PGQUERY_PREPARE, /* Parse only (PQprepare) */ |
| PGQUERY_DESCRIBE /* Describe Statement or Portal */ |
| } PGQueryClass; |
| |
| /* PGSetenvStatusType defines the state of the PQSetenv state machine */ |
| /* (this is used only for 2.0-protocol connections) */ |
| typedef enum |
| { |
| SETENV_STATE_OPTION_SEND, /* About to send an Environment Option */ |
| SETENV_STATE_OPTION_WAIT, /* Waiting for above send to complete */ |
| SETENV_STATE_QUERY1_SEND, /* About to send a status query */ |
| SETENV_STATE_QUERY1_WAIT, /* Waiting for query to complete */ |
| SETENV_STATE_QUERY2_SEND, /* About to send a status query */ |
| SETENV_STATE_QUERY2_WAIT, /* Waiting for query to complete */ |
| SETENV_STATE_IDLE |
| } PGSetenvStatusType; |
| |
| /* Typedef for the EnvironmentOptions[] array */ |
| typedef struct PQEnvironmentOption |
| { |
| const char *envName, /* name of an environment variable */ |
| *pgName; /* name of corresponding SET variable */ |
| } PQEnvironmentOption; |
| |
| /* Typedef for parameter-status list entries */ |
| typedef struct pgParameterStatus |
| { |
| struct pgParameterStatus *next; /* list link */ |
| char *name; /* parameter name */ |
| char *value; /* parameter value */ |
| /* Note: name and value are stored in same malloc block as struct is */ |
| } pgParameterStatus; |
| |
| /* large-object-access data ... allocated only if large-object code is used. */ |
| typedef struct pgLobjfuncs |
| { |
| Oid fn_lo_open; /* OID of backend function lo_open */ |
| Oid fn_lo_close; /* OID of backend function lo_close */ |
| Oid fn_lo_creat; /* OID of backend function lo_creat */ |
| Oid fn_lo_create; /* OID of backend function lo_create */ |
| Oid fn_lo_unlink; /* OID of backend function lo_unlink */ |
| Oid fn_lo_lseek; /* OID of backend function lo_lseek */ |
| Oid fn_lo_tell; /* OID of backend function lo_tell */ |
| Oid fn_lo_truncate; /* OID of backend function lo_truncate */ |
| Oid fn_lo_read; /* OID of backend function LOread */ |
| Oid fn_lo_write; /* OID of backend function LOwrite */ |
| } PGlobjfuncs; |
| |
| /* |
| * PGconn stores all the state data associated with a single connection |
| * to a backend. |
| */ |
| struct pg_conn |
| { |
| /* Saved values of connection options */ |
| char *pghost; /* the machine on which the server is running */ |
| char *pghostaddr; /* the numeric IP address of the machine on |
| * which the server is running. Takes |
| * precedence over above. */ |
| char *pgport; /* the server's communication port */ |
| char *pgunixsocket; /* the Unix-domain socket that the server is |
| * listening on; if NULL, uses a default |
| * constructed from pgport */ |
| char *pgtty; /* tty on which the backend messages is |
| * displayed (OBSOLETE, NOT USED) */ |
| char *connect_timeout; /* connection timeout (numeric string) */ |
| char *pgoptions; /* options to start the backend with */ |
| char *appname; /* application name */ |
| char *fbappname; /* fallback application name */ |
| char *dbName; /* database name */ |
| char *replication; /* connect as the replication standby? */ |
| char *pguser; /* Postgres username and password, if any */ |
| char *pgpass; |
| char *keepalives; /* use TCP keepalives? */ |
| char *keepalives_idle; /* time between TCP keepalives */ |
| char *keepalives_interval; /* time between TCP keepalive |
| * retransmits */ |
| char *keepalives_count; /* maximum number of TCP keepalive |
| * retransmits */ |
| char *sslmode; /* SSL mode (require,prefer,allow,disable) */ |
| char *sslkey; /* client key filename */ |
| char *sslcert; /* client certificate filename */ |
| char *sslrootcert; /* root certificate filename */ |
| char *sslcrl; /* certificate revocation list filename */ |
| |
| #if defined(KRB5) || defined(ENABLE_GSS) || defined(ENABLE_SSPI) |
| char *krbsrvname; /* Kerberos service name */ |
| #endif |
| |
| /* Optional file to write trace info to */ |
| FILE *Pfdebug; |
| |
| /* Callback procedures for notice message processing */ |
| PGNoticeHooks noticeHooks; |
| |
| /* Event procs registered via PQregisterEventProc */ |
| PGEvent *events; /* expandable array of event data */ |
| int nEvents; /* number of active events */ |
| int eventArraySize; /* allocated array size */ |
| |
| /* Status indicators */ |
| ConnStatusType status; |
| PGAsyncStatusType asyncStatus; |
| PGTransactionStatusType xactStatus; /* never changes to ACTIVE */ |
| PGQueryClass queryclass; |
| char *last_query; /* last SQL command, or NULL if unknown */ |
| bool options_valid; /* true if OK to attempt connection */ |
| bool nonblocking; /* whether this connection is using nonblock |
| * sending semantics */ |
| char copy_is_binary; /* 1 = copy binary, 0 = copy text */ |
| int copy_already_done; /* # bytes already returned in COPY |
| * OUT */ |
| PGnotify *notifyHead; /* oldest unreported Notify msg */ |
| PGnotify *notifyTail; /* newest unreported Notify msg */ |
| |
| /* Connection data */ |
| int sock; /* Unix FD for socket, -1 if not connected */ |
| SockAddr laddr; /* Local address */ |
| SockAddr raddr; /* Remote address */ |
| ProtocolVersion pversion; /* FE/BE protocol version in use */ |
| int sversion; /* server version, e.g. 70401 for 7.4.1 */ |
| bool password_needed; /* true if server demanded a password */ |
| bool dot_pgpass_used; /* true if used .pgpass */ |
| bool sigpipe_so; /* have we masked SIGPIPE via SO_NOSIGPIPE? */ |
| bool sigpipe_flag; /* can we mask SIGPIPE via MSG_NOSIGNAL? */ |
| |
| /* Transient state needed while establishing connection */ |
| struct addrinfo *addrlist; /* list of possible backend addresses */ |
| struct addrinfo *addr_cur; /* the one currently being tried */ |
| int addrlist_family; /* needed to know how to free addrlist */ |
| PGSetenvStatusType setenv_state; /* for 2.0 protocol only */ |
| const PQEnvironmentOption *next_eo; |
| bool send_appname; /* okay to send application_name? */ |
| |
| /* Miscellaneous stuff */ |
| int be_pid; /* PID of backend --- needed for cancels */ |
| int be_key; /* key of backend --- needed for cancels */ |
| char md5Salt[4]; /* password salt received from backend */ |
| pgParameterStatus *pstatus; /* ParameterStatus data */ |
| int client_encoding; /* encoding id */ |
| bool std_strings; /* standard_conforming_strings */ |
| PGVerbosity verbosity; /* error/notice message verbosity */ |
| PGlobjfuncs *lobjfuncs; /* private state for large-object access fns */ |
| |
| /* Buffer for data received from backend and not yet processed */ |
| char *inBuffer; /* currently allocated buffer */ |
| int inBufSize; /* allocated size of buffer */ |
| int inStart; /* offset to first unconsumed data in buffer */ |
| int inCursor; /* next byte to tentatively consume */ |
| int inEnd; /* offset to first position after avail data */ |
| |
| /* Buffer for data not yet sent to backend */ |
| char *outBuffer; /* currently allocated buffer */ |
| int outBufSize; /* allocated size of buffer */ |
| int outCount; /* number of chars waiting in buffer */ |
| |
| /* State for constructing messages in outBuffer */ |
| int outMsgStart; /* offset to msg start (length word); if -1, |
| * msg has no length word */ |
| int outMsgEnd; /* offset to msg end (so far) */ |
| |
| /* Status for asynchronous result construction */ |
| PGresult *result; /* result being constructed */ |
| PGresAttValue *curTuple; /* tuple currently being read */ |
| |
| #ifdef USE_SSL |
| bool allow_ssl_try; /* Allowed to try SSL negotiation */ |
| bool wait_ssl_try; /* Delay SSL negotiation until after |
| * attempting normal connection */ |
| SSL *ssl; /* SSL status, if have SSL connection */ |
| X509 *peer; /* X509 cert of server */ |
| #ifdef USE_SSL_ENGINE |
| ENGINE *engine; /* SSL engine, if any */ |
| #else |
| void *engine; /* dummy field to keep struct the same if |
| * OpenSSL version changes */ |
| #endif |
| #endif /* USE_SSL */ |
| |
| #ifdef ENABLE_GSS |
| gss_ctx_id_t gctx; /* GSS context */ |
| gss_name_t gtarg_nam; /* GSS target name */ |
| gss_buffer_desc ginbuf; /* GSS input token */ |
| gss_buffer_desc goutbuf; /* GSS output token */ |
| #endif |
| |
| #ifdef ENABLE_SSPI |
| #ifndef ENABLE_GSS |
| gss_buffer_desc ginbuf; /* GSS input token */ |
| #else |
| char *gsslib; /* What GSS librart to use ("gssapi" or |
| * "sspi") */ |
| #endif |
| CredHandle *sspicred; /* SSPI credentials handle */ |
| CtxtHandle *sspictx; /* SSPI context */ |
| char *sspitarget; /* SSPI target name */ |
| int usesspi; /* Indicate if SSPI is in use on the |
| * connection */ |
| #endif |
| |
| |
| /* Buffer for current error message */ |
| PQExpBufferData errorMessage; /* expansible string */ |
| |
| /* Buffer for receiving various parts of messages */ |
| PQExpBufferData workBuffer; /* expansible string */ |
| }; |
| |
| /* PGcancel stores all data necessary to cancel a connection. A copy of this |
| * data is required to safely cancel a connection running on a different |
| * thread. |
| */ |
| struct pg_cancel |
| { |
| SockAddr raddr; /* Remote address */ |
| int be_pid; /* PID of backend --- needed for cancels */ |
| int be_key; /* key of backend --- needed for cancels */ |
| }; |
| |
| |
| /* String descriptions of the ExecStatusTypes. |
| * direct use of this array is deprecated; call PQresStatus() instead. |
| */ |
| extern char *const pgresStatus[]; |
| |
| /* ---------------- |
| * Internal functions of libpq |
| * Functions declared here need to be visible across files of libpq, |
| * but are not intended to be called by applications. We use the |
| * convention "pqXXX" for internal functions, vs. the "PQxxx" names |
| * used for application-visible routines. |
| * ---------------- |
| */ |
| |
| /* === in fe-connect.c === */ |
| |
| extern int pqPacketSend(PGconn *conn, char pack_type, |
| const void *buf, size_t buf_len); |
| extern bool pqGetHomeDirectory(char *buf, int bufsize); |
| |
| #ifdef ENABLE_THREAD_SAFETY |
| extern pgthreadlock_t pg_g_threadlock; |
| |
| #define PGTHREAD_ERROR(msg) \ |
| do { \ |
| fprintf(stderr, "%s\n", msg); \ |
| exit(1); \ |
| } while (0) |
| |
| |
| #define pglock_thread() pg_g_threadlock(true) |
| #define pgunlock_thread() pg_g_threadlock(false) |
| #else |
| #define pglock_thread() ((void) 0) |
| #define pgunlock_thread() ((void) 0) |
| #endif |
| |
| /* === in fe-exec.c === */ |
| |
| extern void pqSetResultError(PGresult *res, const char *msg); |
| extern void pqCatenateResultError(PGresult *res, const char *msg); |
| extern void *pqResultAlloc(PGresult *res, size_t nBytes, bool isBinary); |
| extern char *pqResultStrdup(PGresult *res, const char *str); |
| extern void pqClearAsyncResult(PGconn *conn); |
| extern void pqSaveErrorResult(PGconn *conn); |
| extern PGresult *pqPrepareAsyncResult(PGconn *conn); |
| extern void |
| pqInternalNotice(const PGNoticeHooks *hooks, const char *fmt,...) |
| /* This lets gcc check the format string for consistency. */ |
| __attribute__((format(printf, 2, 3))); |
| extern int pqAddTuple(PGresult *res, PGresAttValue *tup); |
| extern void pqSaveMessageField(PGresult *res, char code, |
| const char *value); |
| extern void pqSaveParameterStatus(PGconn *conn, const char *name, |
| const char *value); |
| extern void pqHandleSendFailure(PGconn *conn); |
| |
| /* === in fe-protocol2.c === */ |
| |
| extern PostgresPollingStatusType pqSetenvPoll(PGconn *conn); |
| |
| extern char *pqBuildStartupPacket2(PGconn *conn, int *packetlen, |
| const PQEnvironmentOption *options); |
| extern void pqParseInput2(PGconn *conn); |
| extern int pqGetCopyData2(PGconn *conn, char **buffer, int async); |
| extern int pqGetline2(PGconn *conn, char *s, int maxlen); |
| extern int pqGetlineAsync2(PGconn *conn, char *buffer, int bufsize); |
| extern int pqEndcopy2(PGconn *conn); |
| extern PGresult *pqFunctionCall2(PGconn *conn, Oid fnid, |
| int *result_buf, int *actual_result_len, |
| int result_is_int, |
| const PQArgBlock *args, int nargs); |
| |
| /* === in fe-protocol3.c === */ |
| |
| extern char *pqBuildStartupPacket3(PGconn *conn, int *packetlen, |
| const PQEnvironmentOption *options); |
| extern void pqParseInput3(PGconn *conn); |
| extern int pqGetErrorNotice3(PGconn *conn, bool isError); |
| extern int pqGetCopyData3(PGconn *conn, char **buffer, int async); |
| extern int pqGetline3(PGconn *conn, char *s, int maxlen); |
| extern int pqGetlineAsync3(PGconn *conn, char *buffer, int bufsize); |
| extern int pqEndcopy3(PGconn *conn); |
| extern PGresult *pqFunctionCall3(PGconn *conn, Oid fnid, |
| int *result_buf, int *actual_result_len, |
| int result_is_int, |
| const PQArgBlock *args, int nargs); |
| |
| /* === in fe-misc.c === */ |
| |
| /* |
| * "Get" and "Put" routines return 0 if successful, EOF if not. Note that for |
| * Get, EOF merely means the buffer is exhausted, not that there is |
| * necessarily any error. |
| */ |
| extern int pqCheckOutBufferSpace(size_t bytes_needed, PGconn *conn); |
| extern int pqCheckInBufferSpace(size_t bytes_needed, PGconn *conn); |
| extern int pqGetc(char *result, PGconn *conn); |
| extern int pqPutc(char c, PGconn *conn); |
| extern int pqGets(PQExpBuffer buf, PGconn *conn); |
| extern int pqGets_append(PQExpBuffer buf, PGconn *conn); |
| extern int pqPuts(const char *s, PGconn *conn); |
| extern int pqGetnchar(char *s, size_t len, PGconn *conn); |
| extern int pqPutnchar(const char *s, size_t len, PGconn *conn); |
| extern int pqGetInt(int *result, size_t bytes, PGconn *conn); |
| extern int pqPutInt(int value, size_t bytes, PGconn *conn); |
| extern int pqPutMsgStart(char msg_type, bool force_len, PGconn *conn); |
| extern int pqPutMsgEnd(PGconn *conn); |
| extern int pqReadData(PGconn *conn); |
| extern int pqFlush(PGconn *conn); |
| extern int pqWait(int forRead, int forWrite, PGconn *conn); |
| extern int pqWaitTimed(int forRead, int forWrite, PGconn *conn, |
| time_t finish_time); |
| extern int pqReadReady(PGconn *conn); |
| extern int pqWriteReady(PGconn *conn); |
| |
| /* === in fe-secure.c === */ |
| |
| extern int pqsecure_initialize(PGconn *); |
| extern void pqsecure_destroy(void); |
| extern PostgresPollingStatusType pqsecure_open_client(PGconn *); |
| extern void pqsecure_close(PGconn *); |
| extern ssize_t pqsecure_read(PGconn *, void *ptr, size_t len); |
| extern ssize_t pqsecure_write(PGconn *, const void *ptr, size_t len); |
| |
| #if defined(ENABLE_THREAD_SAFETY) && !defined(WIN32) |
| extern int pq_block_sigpipe(sigset_t *osigset, bool *sigpipe_pending); |
| extern void pq_reset_sigpipe(sigset_t *osigset, bool sigpipe_pending, |
| bool got_epipe); |
| #endif |
| |
| /* |
| * this is so that we can check if a connection is non-blocking internally |
| * without the overhead of a function call |
| */ |
| #define pqIsnonblocking(conn) ((conn)->nonblocking) |
| |
| #ifdef ENABLE_NLS |
| extern char * |
| libpq_gettext(const char *msgid) |
| __attribute__((format_arg(1))); |
| #else |
| #define libpq_gettext(x) (x) |
| #endif |
| |
| /* |
| * These macros are needed to let error-handling code be portable between |
| * Unix and Windows. (ugh) |
| */ |
| #ifdef WIN32 |
| #define SOCK_ERRNO (WSAGetLastError()) |
| #define SOCK_STRERROR winsock_strerror |
| #define SOCK_ERRNO_SET(e) WSASetLastError(e) |
| #else |
| #define SOCK_ERRNO errno |
| #define SOCK_STRERROR pqStrerror |
| #define SOCK_ERRNO_SET(e) (errno = (e)) |
| #endif |
| |
| #endif /* LIBPQ_INT_H */ |