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Commitf1d7516

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Backport "Expose fsync_fname as a public API".
Backport commitb0a48e9 back to 9.0to allow back-patching another fix that uses fsync_fname.
1 parente8837fc commitf1d7516

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3 files changed

+57
-57
lines changed

3 files changed

+57
-57
lines changed

‎src/backend/storage/file/copydir.c‎

Lines changed: 0 additions & 57 deletions
Original file line numberDiff line numberDiff line change
@@ -38,7 +38,6 @@
3838

3939

4040
staticvoidcopy_file(char*fromfile,char*tofile);
41-
staticvoidfsync_fname(char*fname,boolisdir);
4241

4342

4443
/*
@@ -214,59 +213,3 @@ copy_file(char *fromfile, char *tofile)
214213

215214
pfree(buffer);
216215
}
217-
218-
219-
/*
220-
* fsync a file
221-
*
222-
* Try to fsync directories but ignore errors that indicate the OS
223-
* just doesn't allow/require fsyncing directories.
224-
*/
225-
staticvoid
226-
fsync_fname(char*fname,boolisdir)
227-
{
228-
intfd;
229-
intreturncode;
230-
231-
/*
232-
* Some OSs require directories to be opened read-only whereas other
233-
* systems don't allow us to fsync files opened read-only; so we need both
234-
* cases here
235-
*/
236-
if (!isdir)
237-
fd=BasicOpenFile(fname,
238-
O_RDWR |PG_BINARY,
239-
S_IRUSR |S_IWUSR);
240-
else
241-
fd=BasicOpenFile(fname,
242-
O_RDONLY |PG_BINARY,
243-
S_IRUSR |S_IWUSR);
244-
245-
/*
246-
* Some OSs don't allow us to open directories at all (Windows returns
247-
* EACCES)
248-
*/
249-
if (fd<0&&isdir&& (errno==EISDIR||errno==EACCES))
250-
return;
251-
252-
elseif (fd<0)
253-
ereport(ERROR,
254-
(errcode_for_file_access(),
255-
errmsg("could not open file \"%s\": %m",fname)));
256-
257-
returncode=pg_fsync(fd);
258-
259-
/* Some OSs don't allow us to fsync directories at all */
260-
if (returncode!=0&&isdir&&errno==EBADF)
261-
{
262-
close(fd);
263-
return;
264-
}
265-
266-
if (returncode!=0)
267-
ereport(ERROR,
268-
(errcode_for_file_access(),
269-
errmsg("could not fsync file \"%s\": %m",fname)));
270-
271-
close(fd);
272-
}

‎src/backend/storage/file/fd.c‎

Lines changed: 56 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1948,3 +1948,59 @@ RemovePgTempFilesInDir(const char *tmpdirname)
19481948

19491949
FreeDir(temp_dir);
19501950
}
1951+
1952+
1953+
/*
1954+
* fsync a file
1955+
*
1956+
* Try to fsync directories but ignore errors that indicate the OS
1957+
* just doesn't allow/require fsyncing directories.
1958+
*/
1959+
void
1960+
fsync_fname(char*fname,boolisdir)
1961+
{
1962+
intfd;
1963+
intreturncode;
1964+
1965+
/*
1966+
* Some OSs require directories to be opened read-only whereas other
1967+
* systems don't allow us to fsync files opened read-only; so we need both
1968+
* cases here
1969+
*/
1970+
if (!isdir)
1971+
fd=BasicOpenFile(fname,
1972+
O_RDWR |PG_BINARY,
1973+
S_IRUSR |S_IWUSR);
1974+
else
1975+
fd=BasicOpenFile(fname,
1976+
O_RDONLY |PG_BINARY,
1977+
S_IRUSR |S_IWUSR);
1978+
1979+
/*
1980+
* Some OSs don't allow us to open directories at all (Windows returns
1981+
* EACCES)
1982+
*/
1983+
if (fd<0&&isdir&& (errno==EISDIR||errno==EACCES))
1984+
return;
1985+
1986+
elseif (fd<0)
1987+
ereport(ERROR,
1988+
(errcode_for_file_access(),
1989+
errmsg("could not open file \"%s\": %m",fname)));
1990+
1991+
returncode=pg_fsync(fd);
1992+
1993+
/* Some OSs don't allow us to fsync directories at all */
1994+
if (returncode!=0&&isdir&&errno==EBADF)
1995+
{
1996+
close(fd);
1997+
return;
1998+
}
1999+
2000+
if (returncode!=0)
2001+
ereport(ERROR,
2002+
(errcode_for_file_access(),
2003+
errmsg("could not fsync file \"%s\": %m",fname)));
2004+
2005+
close(fd);
2006+
}

‎src/include/storage/fd.h‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -99,6 +99,7 @@ extern intpg_fsync_no_writethrough(int fd);
9999
externintpg_fsync_writethrough(intfd);
100100
externintpg_fdatasync(intfd);
101101
externintpg_flush_data(intfd,off_toffset,off_tamount);
102+
externvoidfsync_fname(char*fname,boolisdir);
102103

103104
/* Filename components for OpenTemporaryFile */
104105
#definePG_TEMP_FILES_DIR "pgsql_tmp"

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