* miscinit.c
* miscellaneous initialization support stuff
*
- * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/utils/init/miscinit.c,v 1.83 2002/03/01 22:45:15 petere Exp $
+ * $Header: /cvsroot/pgsql/src/backend/utils/init/miscinit.c,v 1.114 2003/09/24 18:54:01 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include <sys/param.h>
-#include <sys/types.h>
#include <signal.h>
-#include <sys/stat.h>
#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/time.h>
#include <fcntl.h>
#include <unistd.h>
#include <grp.h>
#include <pwd.h>
-#include <stdlib.h>
#include <errno.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#ifdef HAVE_UTIME_H
+#include <utime.h>
+#endif
#include "catalog/catname.h"
#include "catalog/pg_shadow.h"
#include "libpq/libpq-be.h"
#include "miscadmin.h"
+#include "storage/ipc.h"
+#include "storage/pg_shmem.h"
#include "utils/builtins.h"
#include "utils/guc.h"
#include "utils/lsyscache.h"
#include "utils/syscache.h"
-#ifdef CYR_RECODE
-unsigned char RecodeForwTable[128];
-unsigned char RecodeBackTable[128];
-#endif
-
ProcessingMode Mode = InitProcessing;
/* Note: we rely on these to initialize as zeroes */
/* ----------------------------------------------------------------
* ignoring system indexes support stuff
+ *
+ * NOTE: "ignoring system indexes" means we do not use the system indexes
+ * for lookups (either in hardwired catalog accesses or in planner-generated
+ * plans). We do, however, still update the indexes when a catalog
+ * modification is made.
* ----------------------------------------------------------------
*/
* True if ignoring system indexes.
*/
bool
-IsIgnoringSystemIndexes()
+IsIgnoringSystemIndexes(void)
{
return isIgnoringSystemIndexes;
}
/*
* IgnoreSystemIndexes
- * Set true or false whether PostgreSQL ignores system indexes.
- *
+ * Set true or false whether PostgreSQL ignores system indexes.
*/
void
IgnoreSystemIndexes(bool mode)
isIgnoringSystemIndexes = mode;
}
+/* ----------------------------------------------------------------
+ * system index reindexing support
+ *
+ * When we are busy reindexing a system index, this code provides support
+ * for preventing catalog lookups from using that index.
+ * ----------------------------------------------------------------
+ */
+
+static Oid currentlyReindexedHeap = InvalidOid;
+static Oid currentlyReindexedIndex = InvalidOid;
+
+/*
+ * ReindexIsProcessingHeap
+ * True if heap specified by OID is currently being reindexed.
+ */
+bool
+ReindexIsProcessingHeap(Oid heapOid)
+{
+ return heapOid == currentlyReindexedHeap;
+}
+
+/*
+ * ReindexIsProcessingIndex
+ * True if index specified by OID is currently being reindexed.
+ */
+bool
+ReindexIsProcessingIndex(Oid indexOid)
+{
+ return indexOid == currentlyReindexedIndex;
+}
+
+/*
+ * SetReindexProcessing
+ * Set flag that specified heap/index are being reindexed.
+ * Pass InvalidOid to indicate that reindexing is not active.
+ */
+void
+SetReindexProcessing(Oid heapOid, Oid indexOid)
+{
+ /* Args should be both, or neither, InvalidOid */
+ Assert((heapOid == InvalidOid) == (indexOid == InvalidOid));
+ /* Reindexing is not re-entrant. */
+ Assert(indexOid == InvalidOid || currentlyReindexedIndex == InvalidOid);
+ currentlyReindexedHeap = heapOid;
+ currentlyReindexedIndex = indexOid;
+}
+
/* ----------------------------------------------------------------
* database path / name support stuff
* ----------------------------------------------------------------
}
}
-void
-SetDatabaseName(const char *name)
-{
- if (DatabaseName)
- {
- free(DatabaseName);
- DatabaseName = NULL;
- }
- /* use strdup since this is done before memory contexts are set up */
- if (name)
- {
- DatabaseName = strdup(name);
- AssertState(DatabaseName);
- }
-}
-
/*
* Set data directory, but make sure it's an absolute path. Use this,
* never set DataDir directly.
SetDataDir(const char *dir)
{
char *new;
+ int newlen;
AssertArg(dir);
- if (dir[0] != '/')
+ /* If presented path is relative, convert to absolute */
+ if (!is_absolute_path(dir))
{
char *buf;
size_t buflen;
{
buf = malloc(buflen);
if (!buf)
- elog(FATAL, "out of memory");
+ ereport(FATAL,
+ (errcode(ERRCODE_OUT_OF_MEMORY),
+ errmsg("out of memory")));
if (getcwd(buf, buflen))
break;
else
{
free(buf);
- elog(FATAL, "cannot get current working directory: %m");
+ elog(FATAL, "could not get current working directory: %m");
}
}
new = malloc(strlen(buf) + 1 + strlen(dir) + 1);
if (!new)
- elog(FATAL, "out of memory");
+ ereport(FATAL,
+ (errcode(ERRCODE_OUT_OF_MEMORY),
+ errmsg("out of memory")));
sprintf(new, "%s/%s", buf, dir);
free(buf);
}
{
new = strdup(dir);
if (!new)
- elog(FATAL, "out of memory");
+ ereport(FATAL,
+ (errcode(ERRCODE_OUT_OF_MEMORY),
+ errmsg("out of memory")));
}
+ /*
+ * Strip any trailing slash. Not strictly necessary, but avoids
+ * generating funny-looking paths to individual files.
+ */
+ newlen = strlen(new);
+ if (newlen > 1 && new[newlen - 1] == '/'
+#ifdef WIN32
+ || new[newlen - 1] == '\\'
+#endif
+ )
+ new[newlen - 1] = '\0';
+
if (DataDir)
free(DataDir);
DataDir = new;
}
-/* ----------------------------------------------------------------
- * MULTIBYTE stub code
- *
- * Even if MULTIBYTE is not enabled, these functions are necessary
- * since pg_proc.h has references to them.
- * ----------------------------------------------------------------
- */
-
-#ifndef MULTIBYTE
-
-Datum
-getdatabaseencoding(PG_FUNCTION_ARGS)
-{
- return DirectFunctionCall1(namein, CStringGetDatum("SQL_ASCII"));
-}
-
-Datum
-pg_client_encoding(PG_FUNCTION_ARGS)
-{
- return DirectFunctionCall1(namein, CStringGetDatum("SQL_ASCII"));
-}
-
-Datum
-PG_encoding_to_char(PG_FUNCTION_ARGS)
-{
- return DirectFunctionCall1(namein, CStringGetDatum("SQL_ASCII"));
-}
-
-Datum
-PG_char_to_encoding(PG_FUNCTION_ARGS)
-{
- PG_RETURN_INT32(0);
-}
-
-Datum
-pg_convert(PG_FUNCTION_ARGS)
-{
- elog(ERROR, "convert is not supported. To use convert, you need to enable multibyte capability");
- return DirectFunctionCall1(textin, CStringGetDatum(""));
-}
-
-Datum
-pg_convert2(PG_FUNCTION_ARGS)
-{
- elog(ERROR, "convert is not supported. To use convert, you need to enable multibyte capability");
- return DirectFunctionCall1(textin, CStringGetDatum(""));
-}
-#endif
-
-/* ----------------------------------------------------------------
- * CYR_RECODE support
- * ----------------------------------------------------------------
- */
-
-#ifdef CYR_RECODE
-
-#define MAX_TOKEN 80
-
-/*
- * Some standard C libraries, including GNU, have an isblank() function.
- * Others, including Solaris, do not. So we have our own.
- */
-static bool
-isblank(const char c)
-{
- return c == ' ' || c == '\t';
-}
-
-
-/*
- * Grab one token out of fp. Tokens are strings of non-blank
- * characters bounded by blank characters, beginning of line, and end
- * of line. Blank means space or tab. Return the token as *buf.
- * Leave file positioned to character immediately after the token or
- * EOF, whichever comes first. If no more tokens on line, return null
- * string as *buf and position file to beginning of next line or EOF,
- * whichever comes first.
- */
-static void
-next_token(FILE *fp, char *buf, const int bufsz)
-{
- int c;
- char *eb = buf + (bufsz - 1);
-
- /* Move over initial token-delimiting blanks */
- while ((c = getc(fp)) != EOF && isblank(c))
- ;
-
- if (c != EOF && c != '\n')
- {
- /*
- * build a token in buf of next characters up to EOF, eol, or
- * blank. If the token gets too long, we still parse it
- * correctly, but the excess characters are not stored into *buf.
- */
- while (c != EOF && c != '\n' && !isblank(c))
- {
- if (buf < eb)
- *buf++ = c;
- c = getc(fp);
- }
-
- /*
- * Put back the char right after the token (critical in case it is
- * eol, since we need to detect end-of-line at next call).
- */
- if (c != EOF)
- ungetc(c, fp);
- }
- *buf = '\0';
-}
-
-
-static void
-read_through_eol(FILE *file)
-{
- int c;
-
- while ((c = getc(file)) != EOF && c != '\n')
- ;
-}
-
-
-void
-SetCharSet(void)
-{
- FILE *file;
- char *p;
- char *map_file;
- char buf[MAX_TOKEN];
- int i,
- c;
- unsigned char FromChar,
- ToChar;
- char ChTable[80];
-
- for (i = 0; i < 128; i++)
- {
- RecodeForwTable[i] = i + 128;
- RecodeBackTable[i] = i + 128;
- }
-
- if (IsUnderPostmaster)
- {
- GetCharSetByHost(ChTable, MyProcPort->raddr.in.sin_addr.s_addr, DataDir);
- p = ChTable;
- }
- else
- p = getenv("PG_RECODETABLE");
-
- if (p && *p != '\0')
- {
- map_file = palloc(strlen(DataDir) + strlen(p) + 2);
- sprintf(map_file, "%s/%s", DataDir, p);
- file = AllocateFile(map_file, PG_BINARY_R);
- pfree(map_file);
- if (file == NULL)
- return;
- while ((c = getc(file)) != EOF)
- {
- if (c == '#')
- read_through_eol(file);
- else
- {
- /* Read the FromChar */
- ungetc(c, file);
- next_token(file, buf, sizeof(buf));
- if (buf[0] != '\0')
- {
- FromChar = strtoul(buf, 0, 0);
- /* Read the ToChar */
- next_token(file, buf, sizeof(buf));
- if (buf[0] != '\0')
- {
- ToChar = strtoul(buf, 0, 0);
- RecodeForwTable[FromChar - 128] = ToChar;
- RecodeBackTable[ToChar - 128] = FromChar;
- read_through_eol(file);
- }
- }
- }
- }
- FreeFile(file);
- }
-}
-
-char *
-convertstr(unsigned char *buff, int len, int dest)
-{
- int i;
- char *ch = buff;
-
- for (i = 0; i < len; i++, buff++)
- {
- if (*buff > 127)
- {
- if (dest)
- *buff = RecodeForwTable[*buff - 128];
- else
- *buff = RecodeBackTable[*buff - 128];
- }
- }
- return ch;
-}
-#endif
-
-
-
/* ----------------------------------------------------------------
* User ID things
*
- * The session user is determined at connection start and never
- * changes. The current user may change when "setuid" functions
+ * The authenticated user is determined at connection start and never
+ * changes. The session user can be changed only by SET SESSION
+ * AUTHORIZATION. The current user may change when "setuid" functions
* are implemented. Conceptually there is a stack, whose bottom
* is the session user. You are yourself responsible to save and
* restore the current user id if you need to change it.
* ----------------------------------------------------------------
*/
-static Oid CurrentUserId = InvalidOid;
-static Oid SessionUserId = InvalidOid;
+static AclId AuthenticatedUserId = 0;
+static AclId SessionUserId = 0;
+static AclId CurrentUserId = 0;
static bool AuthenticatedUserIsSuperuser = false;
/*
* This function is relevant for all privilege checks.
*/
-Oid
+AclId
GetUserId(void)
{
- AssertState(OidIsValid(CurrentUserId));
+ AssertState(AclIdIsValid(CurrentUserId));
return CurrentUserId;
}
void
-SetUserId(Oid newid)
+SetUserId(AclId newid)
{
- AssertArg(OidIsValid(newid));
+ AssertArg(AclIdIsValid(newid));
CurrentUserId = newid;
}
/*
* This value is only relevant for informational purposes.
*/
-Oid
+AclId
GetSessionUserId(void)
{
- AssertState(OidIsValid(SessionUserId));
+ AssertState(AclIdIsValid(SessionUserId));
return SessionUserId;
}
void
-SetSessionUserId(Oid newid)
+SetSessionUserId(AclId newid)
{
- AssertArg(OidIsValid(newid));
+ AssertArg(AclIdIsValid(newid));
SessionUserId = newid;
/* Current user defaults to session user. */
- if (!OidIsValid(CurrentUserId))
+ if (!AclIdIsValid(CurrentUserId))
CurrentUserId = newid;
}
HeapTuple userTup;
Datum datum;
bool isnull;
+ AclId usesysid;
/*
* Don't do scans if we're bootstrapping, none of the system catalogs
AssertState(!IsBootstrapProcessingMode());
/* call only once */
- AssertState(!OidIsValid(SessionUserId));
+ AssertState(!OidIsValid(AuthenticatedUserId));
userTup = SearchSysCache(SHADOWNAME,
PointerGetDatum(username),
0, 0, 0);
if (!HeapTupleIsValid(userTup))
- elog(FATAL, "user \"%s\" does not exist", username);
+ ereport(FATAL,
+ (errcode(ERRCODE_UNDEFINED_OBJECT),
+ errmsg("user \"%s\" does not exist", username)));
- SetSessionUserId(((Form_pg_shadow) GETSTRUCT(userTup))->usesysid);
+ usesysid = ((Form_pg_shadow) GETSTRUCT(userTup))->usesysid;
+ AuthenticatedUserId = usesysid;
AuthenticatedUserIsSuperuser = ((Form_pg_shadow) GETSTRUCT(userTup))->usesuper;
+ SetSessionUserId(usesysid); /* sets CurrentUserId too */
+
+ /* Record username and superuser status as GUC settings too */
+ SetConfigOption("session_authorization", username,
+ PGC_BACKEND, PGC_S_OVERRIDE);
+ SetConfigOption("is_superuser",
+ AuthenticatedUserIsSuperuser ? "on" : "off",
+ PGC_INTERNAL, PGC_S_OVERRIDE);
+
/*
- * Set up user-specific configuration variables. This is a good
- * place to do it so we don't have to read pg_shadow twice during
- * session startup.
+ * Set up user-specific configuration variables. This is a good place
+ * to do it so we don't have to read pg_shadow twice during session
+ * startup.
*/
datum = SysCacheGetAttr(SHADOWNAME, userTup,
Anum_pg_shadow_useconfig, &isnull);
if (!isnull)
{
- ArrayType *a;
+ ArrayType *a = DatumGetArrayTypeP(datum);
- a = (ArrayType *) pg_detoast_datum((struct varlena *)datum);
ProcessGUCArray(a, PGC_S_USER);
}
AssertState(!IsUnderPostmaster);
/* call only once */
- AssertState(!OidIsValid(SessionUserId));
+ AssertState(!OidIsValid(AuthenticatedUserId));
- SetSessionUserId(BOOTSTRAP_USESYSID);
+ AuthenticatedUserId = BOOTSTRAP_USESYSID;
AuthenticatedUserIsSuperuser = true;
+
+ SetSessionUserId(BOOTSTRAP_USESYSID);
}
/*
* Change session auth ID while running
+ *
+ * Only a superuser may set auth ID to something other than himself. Note
+ * that in case of multiple SETs in a single session, the original userid's
+ * superuserness is what matters. But we set the GUC variable is_superuser
+ * to indicate whether the *current* session userid is a superuser.
*/
void
-SetSessionAuthorization(const char *username)
+SetSessionAuthorization(AclId userid, bool is_superuser)
{
- int32 userid;
-
- if (!AuthenticatedUserIsSuperuser)
- elog(ERROR, "permission denied");
+ /* Must have authenticated already, else can't make permission check */
+ AssertState(AclIdIsValid(AuthenticatedUserId));
- userid = get_usesysid(username);
+ if (userid != AuthenticatedUserId &&
+ !AuthenticatedUserIsSuperuser)
+ ereport(ERROR,
+ (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
+ errmsg("permission denied to set session authorization")));
SetSessionUserId(userid);
SetUserId(userid);
+
+ SetConfigOption("is_superuser",
+ is_superuser ? "on" : "off",
+ PGC_INTERNAL, PGC_S_OVERRIDE);
}
* Get user name from user id
*/
char *
-GetUserName(Oid userid)
+GetUserNameFromId(AclId userid)
{
HeapTuple tuple;
char *result;
ObjectIdGetDatum(userid),
0, 0, 0);
if (!HeapTupleIsValid(tuple))
- elog(ERROR, "invalid user id %u", (unsigned) userid);
+ ereport(ERROR,
+ (errcode(ERRCODE_UNDEFINED_OBJECT),
+ errmsg("invalid user id: %d", userid)));
result = pstrdup(NameStr(((Form_pg_shadow) GETSTRUCT(tuple))->usename));
static void
UnlinkLockFile(int status, Datum filename)
{
- unlink((char *) DatumGetPointer(filename));
- /* Should we complain if the unlink fails? */
+ char *fname = (char *) DatumGetPointer(filename);
+
+ if (fname != NULL)
+ {
+ if (unlink(fname) != 0)
+ {
+ /* Should we complain if the unlink fails? */
+ }
+ free(fname);
+ }
}
/*
- * Create a lockfile, if possible
- *
- * Call CreateLockFile with the name of the lockfile to be created.
- * Returns true if successful, false if not (with a message on stderr).
+ * Create a lockfile.
*
+ * filename is the name of the lockfile to create.
* amPostmaster is used to determine how to encode the output PID.
* isDDLock and refName are used to determine what error message to produce.
*/
-static bool
+static void
CreateLockFile(const char *filename, bool amPostmaster,
bool isDDLock, const char *refName)
{
* Couldn't create the pid file. Probably it already exists.
*/
if ((errno != EEXIST && errno != EACCES) || ntries > 100)
- elog(FATAL, "Can't create lock file %s: %m", filename);
+ ereport(FATAL,
+ (errcode_for_file_access(),
+ errmsg("could not create lock file \"%s\": %m",
+ filename)));
/*
* Read the file to get the old owner's PID. Note race condition
{
if (errno == ENOENT)
continue; /* race condition; try again */
- elog(FATAL, "Can't read lock file %s: %m", filename);
+ ereport(FATAL,
+ (errcode_for_file_access(),
+ errmsg("could not open lock file \"%s\": %m",
+ filename)));
}
if ((len = read(fd, buffer, sizeof(buffer) - 1)) <= 0)
- elog(FATAL, "Can't read lock file %s: %m", filename);
+ ereport(FATAL,
+ (errcode_for_file_access(),
+ errmsg("could not read lock file \"%s\": %m",
+ filename)));
close(fd);
buffer[len] = '\0';
other_pid = (pid_t) (encoded_pid < 0 ? -encoded_pid : encoded_pid);
if (other_pid <= 0)
- elog(FATAL, "Bogus data in lock file %s", filename);
+ elog(FATAL, "bogus data in lock file \"%s\"", filename);
/*
* Check to see if the other process still exists
))
{
/* lockfile belongs to a live process */
- fprintf(stderr, "Lock file \"%s\" already exists.\n",
- filename);
- if (isDDLock)
- fprintf(stderr,
- "Is another %s (pid %d) running in \"%s\"?\n",
- (encoded_pid < 0 ? "postgres" : "postmaster"),
- (int) other_pid, refName);
- else
- fprintf(stderr,
- "Is another %s (pid %d) using \"%s\"?\n",
- (encoded_pid < 0 ? "postgres" : "postmaster"),
- (int) other_pid, refName);
- return false;
+ ereport(FATAL,
+ (errcode(ERRCODE_LOCK_FILE_EXISTS),
+ errmsg("lock file \"%s\" already exists",
+ filename),
+ isDDLock ?
+ errhint("Is another %s (pid %d) running in \"%s\"?",
+ (encoded_pid < 0 ? "postgres" : "postmaster"),
+ (int) other_pid, refName) :
+ errhint("Is another %s (pid %d) using \"%s\"?",
+ (encoded_pid < 0 ? "postgres" : "postmaster"),
+ (int) other_pid, refName)));
}
}
if (isDDLock)
{
char *ptr;
- unsigned long shmKey,
- shmId;
+ unsigned long id1,
+ id2;
ptr = strchr(buffer, '\n');
if (ptr != NULL &&
(ptr = strchr(ptr + 1, '\n')) != NULL)
{
ptr++;
- if (sscanf(ptr, "%lu %lu", &shmKey, &shmId) == 2)
+ if (sscanf(ptr, "%lu %lu", &id1, &id2) == 2)
{
- if (SharedMemoryIsInUse((IpcMemoryKey) shmKey,
- (IpcMemoryId) shmId))
- {
- fprintf(stderr,
- "Found a pre-existing shared memory block (ID %d) still in use.\n"
- "If you're sure there are no old backends still running,\n"
- "remove the shared memory block with ipcrm(1), or just\n"
- "delete \"%s\".\n",
- (int) shmId, filename);
- return false;
- }
+ if (PGSharedMemoryIsInUse(id1, id2))
+ ereport(FATAL,
+ (errcode(ERRCODE_LOCK_FILE_EXISTS),
+ errmsg("pre-existing shared memory block "
+ "(key %lu, id %lu) is still in use",
+ id1, id2),
+ errhint("If you're sure there are no old "
+ "backends still running, remove "
+ "the shared memory block with "
+ "ipcrm(1), or just delete \"%s\".",
+ filename)));
}
}
}
* against other would-be creators.
*/
if (unlink(filename) < 0)
- elog(FATAL, "Can't remove old lock file %s: %m"
- "\n\tThe file seems accidentally left, but I couldn't remove it."
- "\n\tPlease remove the file by hand and try again.",
- filename);
+ ereport(FATAL,
+ (errcode_for_file_access(),
+ errmsg("could not remove old lock file \"%s\": %m",
+ filename),
+ errhint("The file seems accidentally left over, but "
+ "I couldn't remove it. Please remove the file "
+ "by hand and try again.")));
}
/*
unlink(filename);
/* if write didn't set errno, assume problem is no disk space */
errno = save_errno ? save_errno : ENOSPC;
- elog(FATAL, "Can't write lock file %s: %m", filename);
+ ereport(FATAL,
+ (errcode_for_file_access(),
+ errmsg("could not write lock file \"%s\": %m", filename)));
}
close(fd);
* Arrange for automatic removal of lockfile at proc_exit.
*/
on_proc_exit(UnlinkLockFile, PointerGetDatum(strdup(filename)));
-
- return true; /* Success! */
}
-bool
+void
CreateDataDirLockFile(const char *datadir, bool amPostmaster)
{
char lockfile[MAXPGPATH];
snprintf(lockfile, sizeof(lockfile), "%s/postmaster.pid", datadir);
- if (!CreateLockFile(lockfile, amPostmaster, true, datadir))
- return false;
+ CreateLockFile(lockfile, amPostmaster, true, datadir);
/* Save name of lockfile for RecordSharedMemoryInLockFile */
strcpy(directoryLockFile, lockfile);
- return true;
}
-bool
+void
CreateSocketLockFile(const char *socketfile, bool amPostmaster)
{
char lockfile[MAXPGPATH];
snprintf(lockfile, sizeof(lockfile), "%s.lock", socketfile);
- if (!CreateLockFile(lockfile, amPostmaster, false, socketfile))
- return false;
+ CreateLockFile(lockfile, amPostmaster, false, socketfile);
/* Save name of lockfile for TouchSocketLockFile */
strcpy(socketLockFile, lockfile);
- return true;
}
/*
- * Re-read the socket lock file. This should be called every so often
- * to ensure that the lock file has a recent access date. That saves it
+ * TouchSocketLockFile -- mark socket lock file as recently accessed
+ *
+ * This routine should be called every so often to ensure that the lock file
+ * has a recent mod or access date. That saves it
* from being removed by overenthusiastic /tmp-directory-cleaner daemons.
* (Another reason we should never have put the socket file in /tmp...)
*/
void
TouchSocketLockFile(void)
{
- int fd;
- char buffer[1];
-
/* Do nothing if we did not create a socket... */
if (socketLockFile[0] != '\0')
{
- /* XXX any need to complain about errors here? */
+ /*
+ * utime() is POSIX standard, utimes() is a common alternative; if
+ * we have neither, fall back to actually reading the file (which
+ * only sets the access time not mod time, but that should be
+ * enough in most cases). In all paths, we ignore errors.
+ */
+#ifdef HAVE_UTIME
+ utime(socketLockFile, NULL);
+#else /* !HAVE_UTIME */
+#ifdef HAVE_UTIMES
+ utimes(socketLockFile, NULL);
+#else /* !HAVE_UTIMES */
+ int fd;
+ char buffer[1];
+
fd = open(socketLockFile, O_RDONLY | PG_BINARY, 0);
if (fd >= 0)
{
read(fd, buffer, sizeof(buffer));
close(fd);
}
+#endif /* HAVE_UTIMES */
+#endif /* HAVE_UTIME */
}
}
* This may be called multiple times in the life of a postmaster, if we
* delete and recreate shmem due to backend crash. Therefore, be prepared
* to overwrite existing information. (As of 7.1, a postmaster only creates
- * one shm seg anyway; but for the purposes here, if we did have more than
+ * one shm seg at a time; but for the purposes here, if we did have more than
* one then any one of them would do anyway.)
*/
void
-RecordSharedMemoryInLockFile(IpcMemoryKey shmKey, IpcMemoryId shmId)
+RecordSharedMemoryInLockFile(unsigned long id1, unsigned long id2)
{
int fd;
int len;
fd = open(directoryLockFile, O_RDWR | PG_BINARY, 0);
if (fd < 0)
{
- elog(DEBUG, "Failed to rewrite %s: %m", directoryLockFile);
+ ereport(LOG,
+ (errcode_for_file_access(),
+ errmsg("could not rewrite \"%s\": %m",
+ directoryLockFile)));
return;
}
len = read(fd, buffer, sizeof(buffer) - 100);
if (len <= 0)
{
- elog(DEBUG, "Failed to read %s: %m", directoryLockFile);
+ ereport(LOG,
+ (errcode_for_file_access(),
+ errmsg("could not read \"%s\": %m",
+ directoryLockFile)));
close(fd);
return;
}
if (ptr == NULL ||
(ptr = strchr(ptr + 1, '\n')) == NULL)
{
- elog(DEBUG, "Bogus data in %s", directoryLockFile);
+ elog(LOG, "bogus data in \"%s\"", directoryLockFile);
close(fd);
return;
}
ptr++;
/*
- * Append shm key and ID. Format to try to keep it the same length
+ * Append key information. Format to try to keep it the same length
* always (trailing junk won't hurt, but might confuse humans).
*/
- sprintf(ptr, "%9lu %9lu\n",
- (unsigned long) shmKey, (unsigned long) shmId);
+ sprintf(ptr, "%9lu %9lu\n", id1, id2);
/*
* And rewrite the data. Since we write in a single kernel call, this
/* if write didn't set errno, assume problem is no disk space */
if (errno == 0)
errno = ENOSPC;
- elog(DEBUG, "Failed to write %s: %m", directoryLockFile);
+ ereport(LOG,
+ (errcode_for_file_access(),
+ errmsg("could not write \"%s\": %m",
+ directoryLockFile)));
close(fd);
return;
}
* Determine whether the PG_VERSION file in directory `path' indicates
* a data version compatible with the version of this program.
*
- * If compatible, return. Otherwise, elog(FATAL).
+ * If compatible, return. Otherwise, ereport(FATAL).
*/
void
ValidatePgVersion(const char *path)
if (*endptr == '.')
my_minor = strtol(endptr + 1, NULL, 10);
- snprintf(full_path, MAXPGPATH, "%s/PG_VERSION", path);
+ snprintf(full_path, sizeof(full_path), "%s/PG_VERSION", path);
file = AllocateFile(full_path, "r");
if (!file)
{
if (errno == ENOENT)
- elog(FATAL, "File %s is missing. This is not a valid data directory.", full_path);
+ ereport(FATAL,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("\"%s\" is not a valid data directory",
+ path),
+ errdetail("File \"%s\" is missing.", full_path)));
else
- elog(FATAL, "cannot open %s: %m", full_path);
+ ereport(FATAL,
+ (errcode_for_file_access(),
+ errmsg("could not open \"%s\": %m", full_path)));
}
ret = fscanf(file, "%ld.%ld", &file_major, &file_minor);
if (ret != 2)
- elog(FATAL, "File %s does not contain valid data. You need to initdb.", full_path);
+ ereport(FATAL,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("\"%s\" is not a valid data directory",
+ path),
+ errdetail("File \"%s\" does not contain valid data.",
+ full_path),
+ errhint("You may need to initdb.")));
FreeFile(file);
if (my_major != file_major || my_minor != file_minor)
- elog(FATAL, "The data directory was initialized by PostgreSQL version %ld.%ld, "
- "which is not compatible with this version %s.",
- file_major, file_minor, version_string);
+ ereport(FATAL,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("database files are incompatible with server"),
+ errdetail("The data directory was initialized by PostgreSQL version %ld.%ld, "
+ "which is not compatible with this version %s.",
+ file_major, file_minor, version_string)));
+}
+
+/*-------------------------------------------------------------------------
+ * Library preload support
+ *-------------------------------------------------------------------------
+ */
+
+#if defined(__mc68000__) && defined(__ELF__)
+typedef int32 ((*func_ptr) ());
+
+#else
+typedef char *((*func_ptr) ());
+#endif
+
+/*
+ * process any libraries that should be preloaded and
+ * optionally pre-initialized
+ */
+void
+process_preload_libraries(char *preload_libraries_string)
+{
+ char *rawstring;
+ List *elemlist;
+ List *l;
+
+ if (preload_libraries_string == NULL)
+ return;
+
+ /* Need a modifiable copy of string */
+ rawstring = pstrdup(preload_libraries_string);
+
+ /* Parse string into list of identifiers */
+ if (!SplitIdentifierString(rawstring, ',', &elemlist))
+ {
+ /* syntax error in list */
+ pfree(rawstring);
+ freeList(elemlist);
+ ereport(LOG,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("invalid list syntax for preload_libraries configuration option")));
+ return;
+ }
+
+ foreach(l, elemlist)
+ {
+ char *tok = (char *) lfirst(l);
+ char *sep = strstr(tok, ":");
+ char *filename = NULL;
+ char *funcname = NULL;
+ func_ptr initfunc;
+
+ if (sep)
+ {
+ /*
+ * a colon separator implies there is an initialization
+ * function that we need to run in addition to loading the
+ * library
+ */
+ size_t filename_len = sep - tok;
+ size_t funcname_len = strlen(tok) - filename_len - 1;
+
+ filename = (char *) palloc(filename_len + 1);
+ memcpy(filename, tok, filename_len);
+ filename[filename_len] = '\0';
+
+ funcname = (char *) palloc(funcname_len + 1);
+ strcpy(funcname, sep + 1);
+ }
+ else
+ {
+ /*
+ * no separator -- just load the library
+ */
+ filename = pstrdup(tok);
+ funcname = NULL;
+ }
+
+ initfunc = (func_ptr) load_external_function(filename, funcname,
+ true, NULL);
+ if (initfunc)
+ (*initfunc) ();
+
+ if (funcname)
+ ereport(LOG,
+ (errmsg("preloaded library \"%s\" with initialization function \"%s\"",
+ filename, funcname)));
+ else
+ ereport(LOG,
+ (errmsg("preloaded library \"%s\"",
+ filename)));
+
+ pfree(filename);
+ if (funcname)
+ pfree(funcname);
+ }
+
+ pfree(rawstring);
+ freeList(elemlist);
}
projects / postgresql / blobdiff