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Add support for abstract Unix-domain sockets

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This is a variant of the normal Unix-domain sockets that don't use the
file system but a separate "abstract" namespace.  At the user
interface, such sockets are represented by names starting with "@".
Supported on Linux and Windows right now.

Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://www.postgresql.org/message-id/flat/6dee8574-b0ad-fc49-9c8c-2edc796f0033@2ndquadrant.com
This commit is contained in:
Peter Eisentraut
2020-11-25 08:14:23 +01:00
parent a7e65dc88b
commit c9f0624bc2
8 changed files with 76 additions and 16 deletions
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15
src/bin/psql/command.c
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@ -37,6 +37,7 @@
#include "input.h"
#include "large_obj.h"
#include "libpq-fe.h"
#include "libpq/pqcomm.h"
#include "mainloop.h"
#include "portability/instr_time.h"
#include "pqexpbuffer.h"
@ -604,12 +605,9 @@ exec_command_conninfo(PsqlScanState scan_state, bool active_branch)
char *host = PQhost(pset.db);
char *hostaddr = PQhostaddr(pset.db);
/*
* If the host is an absolute path, the connection is via socket
* unless overridden by hostaddr
*/
if (is_absolute_path(host))
if (is_unixsock_path(host))
{
/* hostaddr overrides host */
if (hostaddr && *hostaddr)
printf(_("You are connected to database \"%s\" as user \"%s\" on address \"%s\" at port \"%s\".\n"),
db, PQuser(pset.db), hostaddr, PQport(pset.db));
@ -3407,12 +3405,9 @@ do_connect(enum trivalue reuse_previous_specification,
char *host = PQhost(pset.db);
char *hostaddr = PQhostaddr(pset.db);
/*
* If the host is an absolute path, the connection is via socket
* unless overridden by hostaddr
*/
if (is_absolute_path(host))
if (is_unixsock_path(host))
{
/* hostaddr overrides host */
if (hostaddr && *hostaddr)
printf(_("You are now connected to database \"%s\" as user \"%s\" on address \"%s\" at port \"%s\".\n"),
PQdb(pset.db), PQuser(pset.db), hostaddr, PQport(pset.db));