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Make password null on startup.

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This commit is contained in:
Bruce Momjian
1997-12-12 16:26:36 +00:00
parent c60f70b53f
commit ab179d6940
4 changed files with 35 additions and 14 deletions
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36
src/backend/commands/user.c
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@ -152,11 +152,14 @@ void DefineUser(CreateUserStmt *stmt) {
/* Add the stuff here for groups.
*/
UpdatePgPwdFile(sql);
/* This goes after the UpdatePgPwdFile to be certain that two backends to not
* attempt to write to the pg_pwd file at the same time.
*/
RelationUnsetLockForWrite(pg_user_rel);
heap_close(pg_user_rel);
UpdatePgPwdFile(sql);
if (IsTransactionBlock() && !inblock)
EndTransactionBlock();
}
@ -195,6 +198,10 @@ extern void AlterUser(AlterUserStmt *stmt) {
*/
pg_user_rel = heap_openr(UserRelationName);
pg_user_dsc = RelationGetTupleDescriptor(pg_user_rel);
/* Secure a write lock on pg_user so we can be sure that when the dump of
* the pg_pwd file is done, there is not another backend doing the same.
*/
RelationSetLockForWrite(pg_user_rel);
scan = heap_beginscan(pg_user_rel, false, false, 0, NULL);
while (HeapTupleIsValid(tuple = heap_getnext(scan, 0, &buffer))) {
@ -207,9 +214,10 @@ extern void AlterUser(AlterUserStmt *stmt) {
}
}
heap_endscan(scan);
heap_close(pg_user_rel);
if (!exists) {
RelationUnsetLockForWrite(pg_user_rel);
heap_close(pg_user_rel);
UserAbortTransactionBlock();
elog(WARN, "alterUser: user \"%s\" does not exist", stmt->user);
return;
@ -257,6 +265,9 @@ extern void AlterUser(AlterUserStmt *stmt) {
UpdatePgPwdFile(sql);
RelationUnsetLockForWrite(pg_user_rel);
heap_close(pg_user_rel);
if (IsTransactionBlock() && !inblock)
EndTransactionBlock();
}
@ -265,7 +276,8 @@ extern void AlterUser(AlterUserStmt *stmt) {
extern void RemoveUser(char* user) {
char* pg_user;
Relation pg_rel;
Relation pg_user_rel,
pg_rel;
TupleDesc pg_dsc;
HeapScanDesc scan;
HeapTuple tuple;
@ -295,10 +307,14 @@ extern void RemoveUser(char* user) {
/* Perform a scan of the pg_user relation to find the usesysid of the user to
* be deleted. If it is not found, then return a warning message.
*/
pg_rel = heap_openr(UserRelationName);
pg_dsc = RelationGetTupleDescriptor(pg_rel);
pg_user_rel = heap_openr(UserRelationName);
pg_dsc = RelationGetTupleDescriptor(pg_user_rel);
/* Secure a write lock on pg_user so we can be sure that when the dump of
* the pg_pwd file is done, there is not another backend doing the same.
*/
RelationSetLockForWrite(pg_user_rel);
scan = heap_beginscan(pg_rel, false, false, 0, NULL);
scan = heap_beginscan(pg_user_rel, false, false, 0, NULL);
while (HeapTupleIsValid(tuple = heap_getnext(scan, 0, &buffer))) {
datum = heap_getattr(tuple, buffer, Anum_pg_user_usename, pg_dsc, &n);
@ -310,9 +326,10 @@ extern void RemoveUser(char* user) {
ReleaseBuffer(buffer);
}
heap_endscan(scan);
heap_close(pg_rel);
if (usesysid == -1) {
RelationUnsetLockForWrite(pg_user_rel);
heap_close(pg_user_rel);
UserAbortTransactionBlock();
elog(WARN, "removeUser: user \"%s\" does not exist", user);
return;
@ -373,6 +390,9 @@ extern void RemoveUser(char* user) {
UpdatePgPwdFile(sql);
RelationUnsetLockForWrite(pg_user_rel);
heap_close(pg_user_rel);
if (IsTransactionBlock() && !inblock)
EndTransactionBlock();
}