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In pg_upgrade, pull the port number from postmaster.pid, like we do for

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socket location.  Also, prevent putting the socket in the current
directory for pre-9.1 servers in live check and non-live check mode,
because pre-9.1 pg_ctl -w can't handle it.

Backpatch to 9.2.
This commit is contained in:
Bruce Momjian
2012-09-03 22:15:09 -04:00
parent 504aeea692
commit a80b8037cf
3 changed files with 63 additions and 42 deletions
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86
contrib/pg_upgrade/option.c
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@ -392,49 +392,65 @@ void
get_sock_dir(ClusterInfo *cluster, bool live_check)
{
#ifdef HAVE_UNIX_SOCKETS
if (!live_check)
/*
* sockdir and port were added to postmaster.pid in PG 9.1.
* Pre-9.1 cannot process pg_ctl -w for sockets in non-default
* locations.
*/
if (GET_MAJOR_VERSION(cluster->major_version) >= 901)
{
/* Use the current directory for the socket */
cluster->sockdir = pg_malloc(MAXPGPATH);
if (!getcwd(cluster->sockdir, MAXPGPATH))
pg_log(PG_FATAL, "cannot find current directory\n");
}
else
{
/*
* If we are doing a live check, we will use the old cluster's Unix
* domain socket directory so we can connect to the live server.
*/
/* sockdir was added to postmaster.pid in PG 9.1 */
if (GET_MAJOR_VERSION(cluster->major_version) >= 901)
if (!live_check)
{
char filename[MAXPGPATH];
FILE *fp;
int i;
snprintf(filename, sizeof(filename), "%s/postmaster.pid",
cluster->pgdata);
if ((fp = fopen(filename, "r")) == NULL)
pg_log(PG_FATAL, "Could not get socket directory of the old server\n");
/* Use the current directory for the socket */
cluster->sockdir = pg_malloc(MAXPGPATH);
for (i = 0; i < LOCK_FILE_LINE_SOCKET_DIR; i++)
if (fgets(cluster->sockdir, MAXPGPATH, fp) == NULL)
pg_log(PG_FATAL, "Could not get socket directory of the old server\n");
fclose(fp);
/* Remove trailing newline */
if (strchr(cluster->sockdir, '\n') != NULL)
*strchr(cluster->sockdir, '\n') = '\0';
if (!getcwd(cluster->sockdir, MAXPGPATH))
pg_log(PG_FATAL, "cannot find current directory\n");
}
else
{
/* Can't get live sockdir, so assume the default is OK. */
cluster->sockdir = NULL;
/*
* If we are doing a live check, we will use the old cluster's Unix
* domain socket directory so we can connect to the live server.
*/
unsigned short orig_port = cluster->port;
char filename[MAXPGPATH], line[MAXPGPATH];
FILE *fp;
int lineno;
snprintf(filename, sizeof(filename), "%s/postmaster.pid",
cluster->pgdata);
if ((fp = fopen(filename, "r")) == NULL)
pg_log(PG_FATAL, "Cannot open file %s: %m\n", filename);
for (lineno = 1;
lineno <= Max(LOCK_FILE_LINE_PORT, LOCK_FILE_LINE_SOCKET_DIR);
lineno++)
{
if (fgets(line, sizeof(line), fp) == NULL)
pg_log(PG_FATAL, "Cannot read line %d from %s: %m\n", lineno, filename);
/* potentially overwrite user-supplied value */
if (lineno == LOCK_FILE_LINE_PORT)
sscanf(line, "%hu", &old_cluster.port);
if (lineno == LOCK_FILE_LINE_SOCKET_DIR)
{
cluster->sockdir = pg_malloc(MAXPGPATH);
/* strip off newline */
sscanf(line, "%s\n", cluster->sockdir);
}
}
fclose(fp);
/* warn of port number correction */
if (orig_port != DEF_PGUPORT && old_cluster.port != orig_port)
pg_log(PG_WARNING, "User-supplied old port number %hu corrected to %hu\n",
orig_port, cluster->port);
}
}
else
/* Can't get sockdir and pg_ctl -w can't use a non-default, use default */
cluster->sockdir = NULL;
#else /* !HAVE_UNIX_SOCKETS */
cluster->sockdir = NULL;
#endif