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Fix process startup in pg_rewind.

Don't allow pg_rewind to run as root on Unix platforms, as any new orreplaced files in the data directory would become owned by root. On Windows,it can run under a user that has Administrator rights, but a restrictedtoken needs to be used. This is the same we do e.g. in pg_resetxlog.Also, add missing set_pglocale_pgservice() call, to fix localization.Michael Paquier and Fujii Masao

1 parent1cdf4d0 commit8a06c36Copy full SHA for 8a06c36

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2 files changed

+18

-1

lines changed

src/bin/pg_rewind
- nls.mk
- pg_rewind.c

2 files changed

+18

-1

lines changed

`‎src/bin/pg_rewind/nls.mk`

Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -1,7 +1,7 @@`
`1`	`1`	`# src/bin/pg_rewind/nls.mk`
`2`	`2`	`CATALOG_NAME = pg_rewind`
`3`	`3`	`AVAIL_LANGUAGES =`
`4`		`-GETTEXT_FILES = copy_fetch.c datapagemap.c fetch.c filemap.c libpq_fetch.c logging.c parsexlog.c pg_rewind.c timeline.c ../../common/fe_memutils.c ../../../src/backend/access/transam/xlogreader.c`
	`4`	`+GETTEXT_FILES = copy_fetch.c datapagemap.c fetch.c filemap.c libpq_fetch.c logging.c parsexlog.c pg_rewind.c timeline.c ../../common/fe_memutils.c ../../common/restricted_token.c ../../../src/backend/access/transam/xlogreader.c`
`5`	`5`
`6`	`6`	`GETTEXT_TRIGGERS = pg_log pg_fatal report_invalid_record:2`
`7`	`7`	`GETTEXT_FLAGS = pg_log:2:c-format\`

`‎src/bin/pg_rewind/pg_rewind.c`

Lines changed: 17 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -24,6 +24,7 @@`
`24`	`24`	`#include"access/xlog_internal.h"`
`25`	`25`	`#include"catalog/catversion.h"`
`26`	`26`	`#include"catalog/pg_control.h"`
	`27`	`+#include"common/restricted_token.h"`
`27`	`28`	`#include"getopt_long.h"`
`28`	`29`	`#include"storage/bufpage.h"`
`29`	`30`
`@@ -102,6 +103,7 @@ main(int argc, char **argv)`
`102`	`103`	`TimeLineIDendtli;`
`103`	`104`	`ControlFileDataControlFile_new;`
`104`	`105`
	`106`	`+set_pglocale_pgservice(argv[0],PG_TEXTDOMAIN("pg_rewind"));`
`105`	`107`	`progname=get_progname(argv[0]);`
`106`	`108`
`107`	`109`	`/* Process command-line arguments */`
`@@ -174,6 +176,21 @@ main(int argc, char **argv)`
`174`	`176`	`exit(1);`
`175`	`177`	`}`
`176`	`178`
	`179`	`+/*`
	`180`	`+ * Don't allow pg_rewind to be run as root, to avoid overwriting the`
	`181`	`+ * ownership of files in the data directory. We need only check for root`
	`182`	`+ * -- any other user won't have sufficient permissions to modify files in`
	`183`	`+ * the data directory.`
	`184`	`+ */`
	`185`	`+#ifndefWIN32`
	`186`	`+if (geteuid()==0)`
	`187`	`+pg_fatal("cannot be executed by \"root\"\n"`
	`188`	`+"You must run %s as the PostgreSQL superuser.\n",`
	`189`	`+progname);`
	`190`	`+#endif`
	`191`	`+`
	`192`	`+get_restricted_token(progname);`
	`193`	`+`
`177`	`194`	`/* Connect to remote server */`
`178`	`195`	`if (connstr_source)`
`179`	`196`	`libpqConnect(connstr_source);`

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Commit8a06c36

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2 files changed

2 files changed

`‎src/bin/pg_rewind/nls.mk`

`‎src/bin/pg_rewind/pg_rewind.c`

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