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Commit841baf2

Browse files
committed
Add mkdtemp() to libpgport.
This function is pervasive on free software operating systems; importNetBSD's implementation. Back-patch to 8.4, like the commit that willharness it.
1 parenta11577f commit841baf2

File tree

7 files changed

+306
-3
lines changed

7 files changed

+306
-3
lines changed

‎configure

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -21319,7 +21319,8 @@ fi
2131921319

2132021320

2132121321

21322-
for ac_func in crypt fls getopt getrusage inet_aton random rint srandom strerror strlcat strlcpy
21322+
21323+
for ac_func in crypt fls getopt getrusage inet_aton mkdtemp random rint srandom strerror strlcat strlcpy
2132321324
do
2132421325
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
2132521326
{ $as_echo "$as_me:$LINENO: checking for $ac_func" >&5

‎configure.in

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1344,7 +1344,7 @@ else
13441344
AC_CHECK_FUNCS([fpclass fp_class fp_class_d class], [break])
13451345
fi
13461346

1347-
AC_REPLACE_FUNCS([crypt fls getopt getrusage inet_aton random rint srandom strerror strlcat strlcpy])
1347+
AC_REPLACE_FUNCS([crypt fls getopt getrusage inet_atonmkdtemprandom rint srandom strerror strlcat strlcpy])
13481348

13491349
case $host_os in
13501350

‎src/include/pg_config.h.in

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -345,6 +345,9 @@
345345
/* Define to 1 if the system has the type `MINIDUMP_TYPE'. */
346346
#undef HAVE_MINIDUMP_TYPE
347347

348+
/* Define to 1 if you have the `mkdtemp' function. */
349+
#undef HAVE_MKDTEMP
350+
348351
/* Define to 1 if you have the <netinet/in.h> header file. */
349352
#undef HAVE_NETINET_IN_H
350353

‎src/include/pg_config.h.win32

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -261,6 +261,9 @@
261261
/* Define to 1 if the system has the type `MINIDUMP_TYPE'. */
262262
#define HAVE_MINIDUMP_TYPE 1
263263

264+
/* Define to 1 if you have the `mkdtemp' function. */
265+
/* #undef HAVE_MKDTEMP */
266+
264267
/* Define to 1 if you have the <netinet/in.h> header file. */
265268
#define HAVE_NETINET_IN_H 1
266269

‎src/include/port.h

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -476,6 +476,9 @@ extern intpg_check_dir(const char *dir);
476476
/* port/pgmkdirp.c */
477477
externintpg_mkdir_p(char*path,intomode);
478478

479+
/* port/mkdtemp.c */
480+
externchar*mkdtemp(char*path);
481+
479482
/* port/pqsignal.c */
480483
typedefvoid (*pqsigfunc) (intsigno);
481484
externpqsigfuncpqsignal(intsigno,pqsigfuncfunc);

‎src/port/mkdtemp.c

Lines changed: 293 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,293 @@
1+
/*-------------------------------------------------------------------------
2+
*
3+
* mkdtemp.c
4+
* create a mode-0700 temporary directory
5+
*
6+
* Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
7+
*
8+
*
9+
* IDENTIFICATION
10+
* src/port/mkdtemp.c
11+
*
12+
* This code was taken from NetBSD to provide an implementation for platforms
13+
* that lack it. (Among compatibly-licensed implementations, the OpenBSD
14+
* version better resists denial-of-service attacks. However, it has a
15+
* cryptographic dependency.) The NetBSD copyright terms follow.
16+
*-------------------------------------------------------------------------
17+
*/
18+
19+
#include"c.h"
20+
21+
#define_DIAGASSERT(x) do {} while (0)
22+
23+
24+
/*$NetBSD: gettemp.c,v 1.17 2014/01/21 19:09:48 seanb Exp $*/
25+
26+
/*
27+
* Copyright (c) 1987, 1993
28+
*The Regents of the University of California. All rights reserved.
29+
*
30+
* Redistribution and use in source and binary forms, with or without
31+
* modification, are permitted provided that the following conditions
32+
* are met:
33+
* 1. Redistributions of source code must retain the above copyright
34+
* notice, this list of conditions and the following disclaimer.
35+
* 2. Redistributions in binary form must reproduce the above copyright
36+
* notice, this list of conditions and the following disclaimer in the
37+
* documentation and/or other materials provided with the distribution.
38+
* 3. Neither the name of the University nor the names of its contributors
39+
* may be used to endorse or promote products derived from this software
40+
* without specific prior written permission.
41+
*
42+
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
43+
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
44+
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
45+
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
46+
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
47+
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
48+
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49+
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
50+
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
51+
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52+
* SUCH DAMAGE.
53+
*/
54+
55+
#ifHAVE_NBTOOL_CONFIG_H
56+
#include"nbtool_config.h"
57+
#endif
58+
59+
#if !HAVE_NBTOOL_CONFIG_H|| !HAVE_MKSTEMP|| !HAVE_MKDTEMP
60+
61+
#ifdefNOT_POSTGRESQL
62+
#include<sys/cdefs.h>
63+
#if defined(LIBC_SCCS)&& !defined(lint)
64+
#if0
65+
staticcharsccsid[]="@(#)mktemp.c8.1 (Berkeley) 6/4/93";
66+
#else
67+
__RCSID("$NetBSD: gettemp.c,v 1.17 2014/01/21 19:09:48 seanb Exp $");
68+
#endif
69+
#endif/* LIBC_SCCS and not lint */
70+
#endif
71+
72+
#include<sys/types.h>
73+
#include<sys/stat.h>
74+
75+
#include<assert.h>
76+
#include<ctype.h>
77+
#include<errno.h>
78+
#include<fcntl.h>
79+
#include<stdio.h>
80+
#include<stdlib.h>
81+
#include<unistd.h>
82+
83+
#ifdefNOT_POSTGRESQL
84+
#ifHAVE_NBTOOL_CONFIG_H
85+
#defineGETTEMP__nbcompat_gettemp
86+
#else
87+
#include"reentrant.h"
88+
#include"local.h"
89+
#defineGETTEMP__gettemp
90+
#endif
91+
#endif
92+
93+
staticint
94+
GETTEMP(char*path,int*doopen,intdomkdir)
95+
{
96+
char*start,
97+
*trv;
98+
structstatsbuf;
99+
u_intpid;
100+
101+
/*
102+
* To guarantee multiple calls generate unique names even if the file is
103+
* not created. 676 different possibilities with 7 or more X's, 26 with 6
104+
* or less.
105+
*/
106+
staticcharxtra[2]="aa";
107+
intxcnt=0;
108+
109+
_DIAGASSERT(path!=NULL);
110+
/* doopen may be NULL */
111+
112+
pid=getpid();
113+
114+
/* Move to end of path and count trailing X's. */
115+
for (trv=path;*trv;++trv)
116+
if (*trv=='X')
117+
xcnt++;
118+
else
119+
xcnt=0;
120+
121+
/* Use at least one from xtra. Use 2 if more than 6 X's. */
122+
if (xcnt>0)
123+
{
124+
*--trv=xtra[0];
125+
xcnt--;
126+
}
127+
if (xcnt>5)
128+
{
129+
*--trv=xtra[1];
130+
xcnt--;
131+
}
132+
133+
/* Set remaining X's to pid digits with 0's to the left. */
134+
for (;xcnt>0;xcnt--)
135+
{
136+
*--trv= (pid %10)+'0';
137+
pid /=10;
138+
}
139+
140+
/* update xtra for next call. */
141+
if (xtra[0]!='z')
142+
xtra[0]++;
143+
else
144+
{
145+
xtra[0]='a';
146+
if (xtra[1]!='z')
147+
xtra[1]++;
148+
else
149+
xtra[1]='a';
150+
}
151+
152+
/*
153+
* check the target directory; if you have six X's and it doesn't exist
154+
* this runs for a *very* long time.
155+
*/
156+
for (start=trv+1;;--trv)
157+
{
158+
if (trv <=path)
159+
break;
160+
if (*trv=='/')
161+
{
162+
inte;
163+
164+
*trv='\0';
165+
e=stat(path,&sbuf);
166+
*trv='/';
167+
if (e==-1)
168+
returndoopen==NULL&& !domkdir;
169+
if (!S_ISDIR(sbuf.st_mode))
170+
{
171+
errno=ENOTDIR;
172+
returndoopen==NULL&& !domkdir;
173+
}
174+
break;
175+
}
176+
}
177+
178+
for (;;)
179+
{
180+
if (doopen)
181+
{
182+
if ((*doopen=
183+
open(path,O_CREAT |O_EXCL |O_RDWR,0600)) >=0)
184+
return1;
185+
if (errno!=EEXIST)
186+
return0;
187+
}
188+
elseif (domkdir)
189+
{
190+
if (mkdir(path,0700) >=0)
191+
return1;
192+
if (errno!=EEXIST)
193+
return0;
194+
}
195+
elseif (lstat(path,&sbuf))
196+
returnerrno==ENOENT ?1 :0;
197+
198+
/* tricky little algorithm for backward compatibility */
199+
for (trv=start;;)
200+
{
201+
if (!*trv)
202+
return0;
203+
if (*trv=='z')
204+
*trv++='a';
205+
else
206+
{
207+
if (isdigit((unsignedchar)*trv))
208+
*trv='a';
209+
else
210+
++*trv;
211+
break;
212+
}
213+
}
214+
}
215+
/* NOTREACHED */
216+
}
217+
218+
#endif/* !HAVE_NBTOOL_CONFIG_H || !HAVE_MKSTEMP ||
219+
* !HAVE_MKDTEMP */
220+
221+
222+
/*$NetBSD: mkdtemp.c,v 1.11 2012/03/15 18:22:30 christos Exp $*/
223+
224+
/*
225+
* Copyright (c) 1987, 1993
226+
*The Regents of the University of California. All rights reserved.
227+
*
228+
* Redistribution and use in source and binary forms, with or without
229+
* modification, are permitted provided that the following conditions
230+
* are met:
231+
* 1. Redistributions of source code must retain the above copyright
232+
* notice, this list of conditions and the following disclaimer.
233+
* 2. Redistributions in binary form must reproduce the above copyright
234+
* notice, this list of conditions and the following disclaimer in the
235+
* documentation and/or other materials provided with the distribution.
236+
* 3. Neither the name of the University nor the names of its contributors
237+
* may be used to endorse or promote products derived from this software
238+
* without specific prior written permission.
239+
*
240+
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
241+
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
242+
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
243+
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
244+
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
245+
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
246+
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
247+
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
248+
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
249+
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
250+
* SUCH DAMAGE.
251+
*/
252+
253+
#ifHAVE_NBTOOL_CONFIG_H
254+
#include"nbtool_config.h"
255+
#endif
256+
257+
#if !HAVE_NBTOOL_CONFIG_H|| !HAVE_MKDTEMP
258+
259+
#ifdefNOT_POSTGRESQL
260+
261+
#include<sys/cdefs.h>
262+
#if defined(LIBC_SCCS)&& !defined(lint)
263+
#if0
264+
staticcharsccsid[]="@(#)mktemp.c8.1 (Berkeley) 6/4/93";
265+
#else
266+
__RCSID("$NetBSD: mkdtemp.c,v 1.11 2012/03/15 18:22:30 christos Exp $");
267+
#endif
268+
#endif/* LIBC_SCCS and not lint */
269+
270+
#ifHAVE_NBTOOL_CONFIG_H
271+
#defineGETTEMP__nbcompat_gettemp
272+
#else
273+
#include<assert.h>
274+
#include<errno.h>
275+
#include<stdio.h>
276+
#include<stdlib.h>
277+
#include<unistd.h>
278+
#include"reentrant.h"
279+
#include"local.h"
280+
#defineGETTEMP__gettemp
281+
#endif
282+
283+
#endif
284+
285+
char*
286+
mkdtemp(char*path)
287+
{
288+
_DIAGASSERT(path!=NULL);
289+
290+
returnGETTEMP(path,NULL,1) ?path :NULL;
291+
}
292+
293+
#endif/* !HAVE_NBTOOL_CONFIG_H || !HAVE_MKDTEMP */

‎src/tools/msvc/Mkvcbuild.pm

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -69,7 +69,7 @@ sub mkvcbuild
6969
srandom.c getaddrinfo.c gettimeofday.c inet_net_ntop.c kill.c open.c
7070
erand48.c snprintf.c strlcat.c strlcpy.c dirmod.c exec.c noblock.c path.c
7171
pgcheckdir.c pg_crc.c pgmkdirp.c pgsleep.c pgstrcasecmp.c pqsignal.c
72-
qsort.c qsort_arg.c quotes.c
72+
mkdtemp.cqsort.c qsort_arg.c quotes.c
7373
sprompt.c tar.c thread.c wait_error.c getopt.c getopt_long.c dirent.c
7474
win32env.c win32error.c win32setlocale.c);
7575

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