arscan.c@ 501

Last change on this file since 501 was 501, checked in by bird, 18 years ago
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1	/* Library function for scanning an archive file.
2	Copyright (C) 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
3	1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation,
4	Inc.
5	This file is part of GNU Make.
6
7	GNU Make is free software; you can redistribute it and/or modify it under the
8	terms of the GNU General Public License as published by the Free Software
9	Foundation; either version 2, or (at your option) any later version.
10
11	GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
12	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
13	A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14
15	You should have received a copy of the GNU General Public License along with
16	GNU Make; see the file COPYING. If not, write to the Free Software
17	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */
18
19	#include "make.h"
20
21	#ifdef HAVE_FCNTL_H
22	#include <fcntl.h>
23	#else
24	#include <sys/file.h>
25	#endif
26
27	#ifndef NO_ARCHIVES
28
29
30	#ifdef VMS
31	#include <lbrdef.h>
32	#include <mhddef.h>
33	#include <credef.h>
34	#include <descrip.h>
35	#include <ctype.h>
36	#if __DECC
37	#include <unixlib.h>
38	#include <lbr$routines.h>
39	#endif
40
41	static void *VMS_lib_idx;
42
43	static char *VMS_saved_memname;
44
45	static time_t VMS_member_date;
46
47	static long int (*VMS_function) ();
48
49	static int
50	VMS_get_member_info (struct dsc$descriptor_s module, unsigned long rfa)
51	{
52	int status, i;
53	long int fnval;
54
55	time_t val;
56
57	static struct dsc$descriptor_s bufdesc =
58	{ 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, NULL };
59
60	struct mhddef *mhd;
61	char filename[128];
62
63	bufdesc.dsc$a_pointer = filename;
64	bufdesc.dsc$w_length = sizeof (filename);
65
66	status = lbr$set_module (&VMS_lib_idx, rfa, &bufdesc,
67	&bufdesc.dsc$w_length, 0);
68	if (! (status & 1))
69	{
70	error (NILF, _("lbr$set_module failed to extract module info, status = %d"),
71	status);
72
73	lbr$close (&VMS_lib_idx);
74
75	return 0;
76	}
77
78	mhd = (struct mhddef *) filename;
79
80	#ifdef __DECC
81	/* John Fowler <jfowler@nyx.net> writes this is needed in his environment,
82	* but that decc$fix_time() isn't documented to work this way. Let me
83	* know if this causes problems in other VMS environments.
84	*/
85	val = decc$fix_time (&mhd->mhd$l_datim) + timezone - daylight*3600;
86	#endif
87
88	for (i = 0; i < module->dsc$w_length; i++)
89	filename[i] = _tolower ((unsigned char)module->dsc$a_pointer[i]);
90
91	filename[i] = '\0';
92
93	VMS_member_date = (time_t) -1;
94
95	fnval =
96	(*VMS_function) (-1, filename, 0, 0, 0, 0, val, 0, 0, 0,
97	VMS_saved_memname);
98
99	if (fnval)
100	{
101	VMS_member_date = fnval;
102	return 0;
103	}
104	else
105	return 1;
106	}
107
108	/* Takes three arguments ARCHIVE, FUNCTION and ARG.
109
110	Open the archive named ARCHIVE, find its members one by one,
111	and for each one call FUNCTION with the following arguments:
112	archive file descriptor for reading the data,
113	member name,
114	member name might be truncated flag,
115	member header position in file,
116	member data position in file,
117	member data size,
118	member date,
119	member uid,
120	member gid,
121	member protection mode,
122	ARG.
123
124	NOTE: on VMS systems, only name, date, and arg are meaningful!
125
126	The descriptor is poised to read the data of the member
127	when FUNCTION is called. It does not matter how much
128	data FUNCTION reads.
129
130	If FUNCTION returns nonzero, we immediately return
131	what FUNCTION returned.
132
133	Returns -1 if archive does not exist,
134	Returns -2 if archive has invalid format.
135	Returns 0 if have scanned successfully. */
136
137	long int
138	ar_scan (char archive, long int (function) PARAMS ((void)), long int arg)
139	{
140	char *p;
141
142	static struct dsc$descriptor_s libdesc =
143	{ 0, DSC$K_DTYPE_T, DSC$K_CLASS_S, NULL };
144
145	unsigned long func = LBR$C_READ;
146	unsigned long type = LBR$C_TYP_UNK;
147	unsigned long index = 1;
148
149	int status;
150
151	status = lbr$ini_control (&VMS_lib_idx, &func, &type, 0);
152
153	if (! (status & 1))
154	{
155	error (NILF, _("lbr$ini_control failed with status = %d"),status);
156	return -2;
157	}
158
159	libdesc.dsc$a_pointer = archive;
160	libdesc.dsc$w_length = strlen (archive);
161
162	status = lbr$open (&VMS_lib_idx, &libdesc, 0, 0, 0, 0, 0);
163
164	if (! (status & 1))
165	{
166	error (NILF, _("unable to open library `%s' to lookup member `%s'"),
167	archive, (char *)arg);
168	return -1;
169	}
170
171	VMS_saved_memname = (char *)arg;
172
173	/* For comparison, delete .obj from arg name. */
174
175	p = strrchr (VMS_saved_memname, '.');
176	if (p)
177	*p = '\0';
178
179	VMS_function = function;
180
181	VMS_member_date = (time_t) -1;
182	lbr$get_index (&VMS_lib_idx, &index, VMS_get_member_info, 0);
183
184	/* Undo the damage. */
185	if (p)
186	*p = '.';
187
188	lbr$close (&VMS_lib_idx);
189
190	return VMS_member_date > 0 ? VMS_member_date : 0;
191	}
192
193	#else /* !VMS */
194
195	/* SCO Unix's compiler defines both of these. */
196	#ifdef M_UNIX
197	#undef M_XENIX
198	#endif
199
200	/* On the sun386i and in System V rel 3, ar.h defines two different archive
201	formats depending upon whether you have defined PORTAR (normal) or PORT5AR
202	(System V Release 1). There is no default, one or the other must be defined
203	to have a nonzero value. */
204
205	#if (!defined (PORTAR) \|\| PORTAR == 0) && (!defined (PORT5AR) \|\| PORT5AR == 0)
206	#undef PORTAR
207	#ifdef M_XENIX
208	/* According to Jim Sievert <jas1@rsvl.unisys.com>, for SCO XENIX defining
209	PORTAR to 1 gets the wrong archive format, and defining it to 0 gets the
210	right one. */
211	#define PORTAR 0
212	#else
213	#define PORTAR 1
214	#endif
215	#endif
216
217	/* On AIX, define these symbols to be sure to get both archive formats.
218	AIX 4.3 introduced the "big" archive format to support 64-bit object
219	files, so on AIX 4.3 systems we need to support both the "normal" and
220	"big" archive formats. An archive's format is indicated in the
221	"fl_magic" field of the "FL_HDR" structure. For a normal archive,
222	this field will be the string defined by the AIAMAG symbol. For a
223	"big" archive, it will be the string defined by the AIAMAGBIG symbol
224	(at least on AIX it works this way).
225
226	Note: we'll define these symbols regardless of which AIX version
227	we're compiling on, but this is okay since we'll use the new symbols
228	only if they're present. */
229	#ifdef _AIX
230	# define __AR_SMALL__
231	# define __AR_BIG__
232	#endif
233
234	#ifndef WINDOWS32
235	# ifndef __BEOS__
236	# include <ar.h>
237	# else
238	/* BeOS 5 doesn't have <ar.h> but has archives in the same format
239	* as many other Unices. This was taken from GNU binutils for BeOS.
240	*/
241	# define ARMAG "!<arch>\n" /* String that begins an archive file. */
242	# define SARMAG 8 /* Size of that string. */
243	# define ARFMAG "`\n" /* String in ar_fmag at end of each header. */
244	struct ar_hdr
245	{
246	char ar_name[16]; /* Member file name, sometimes / terminated. */
247	char ar_date[12]; /* File date, decimal seconds since Epoch. */
248	char ar_uid[6], ar_gid[6]; /* User and group IDs, in ASCII decimal. */
249	char ar_mode[8]; /* File mode, in ASCII octal. */
250	char ar_size[10]; /* File size, in ASCII decimal. */
251	char ar_fmag[2]; /* Always contains ARFMAG. */
252	};
253	# endif
254	#else
255	/* These should allow us to read Windows (VC++) libraries (according to Frank
256	* Libbrecht <frankl@abzx.belgium.hp.com>)
257	*/
258	# include <windows.h>
259	# include <windef.h>
260	# include <io.h>
261	# define ARMAG IMAGE_ARCHIVE_START
262	# define SARMAG IMAGE_ARCHIVE_START_SIZE
263	# define ar_hdr _IMAGE_ARCHIVE_MEMBER_HEADER
264	# define ar_name Name
265	# define ar_mode Mode
266	# define ar_size Size
267	# define ar_date Date
268	# define ar_uid UserID
269	# define ar_gid GroupID
270	#endif
271
272	/* Cray's <ar.h> apparently defines this. */
273	#ifndef AR_HDR_SIZE
274	# define AR_HDR_SIZE (sizeof (struct ar_hdr))
275	#endif
276
277
278	/* Takes three arguments ARCHIVE, FUNCTION and ARG.
279
280	Open the archive named ARCHIVE, find its members one by one,
281	and for each one call FUNCTION with the following arguments:
282	archive file descriptor for reading the data,
283	member name,
284	member name might be truncated flag,
285	member header position in file,
286	member data position in file,
287	member data size,
288	member date,
289	member uid,
290	member gid,
291	member protection mode,
292	ARG.
293
294	The descriptor is poised to read the data of the member
295	when FUNCTION is called. It does not matter how much
296	data FUNCTION reads.
297
298	If FUNCTION returns nonzero, we immediately return
299	what FUNCTION returned.
300
301	Returns -1 if archive does not exist,
302	Returns -2 if archive has invalid format.
303	Returns 0 if have scanned successfully. */
304
305	long int
306	ar_scan (char archive, long int (function)(), long int arg)
307	{
308	#ifdef AIAMAG
309	FL_HDR fl_header;
310	#ifdef AIAMAGBIG
311	int big_archive = 0;
312	FL_HDR_BIG fl_header_big;
313	#endif
314	#else
315	int long_name = 0;
316	#endif
317	char *namemap = 0;
318	register int desc = open (archive, O_RDONLY, 0);
319	if (desc < 0)
320	return -1;
321	#ifdef SARMAG
322	{
323	char buf[SARMAG];
324	register int nread = read (desc, buf, SARMAG);
325	if (nread != SARMAG \|\| bcmp (buf, ARMAG, SARMAG))
326	{
327	(void) close (desc);
328	return -2;
329	}
330	}
331	#else
332	#ifdef AIAMAG
333	{
334	register int nread = read (desc, (char *) &fl_header, FL_HSZ);
335
336	if (nread != FL_HSZ)
337	{
338	(void) close (desc);
339	return -2;
340	}
341	#ifdef AIAMAGBIG
342	/* If this is a "big" archive, then set the flag and
343	re-read the header into the "big" structure. */
344	if (!bcmp (fl_header.fl_magic, AIAMAGBIG, SAIAMAG))
345	{
346	big_archive = 1;
347
348	/* seek back to beginning of archive */
349	if (lseek (desc, 0, 0) < 0)
350	{
351	(void) close (desc);
352	return -2;
353	}
354
355	/* re-read the header into the "big" structure */
356	nread = read (desc, (char *) &fl_header_big, FL_HSZ_BIG);
357	if (nread != FL_HSZ_BIG)
358	{
359	(void) close (desc);
360	return -2;
361	}
362	}
363	else
364	#endif
365	/* Check to make sure this is a "normal" archive. */
366	if (bcmp (fl_header.fl_magic, AIAMAG, SAIAMAG))
367	{
368	(void) close (desc);
369	return -2;
370	}
371	}
372	#else
373	{
374	#ifndef M_XENIX
375	int buf;
376	#else
377	unsigned short int buf;
378	#endif
379	register int nread = read(desc, &buf, sizeof (buf));
380	if (nread != sizeof (buf) \|\| buf != ARMAG)
381	{
382	(void) close (desc);
383	return -2;
384	}
385	}
386	#endif
387	#endif
388
389	/* Now find the members one by one. */
390	{
391	#ifdef SARMAG
392	register long int member_offset = SARMAG;
393	#else
394	#ifdef AIAMAG
395	long int member_offset;
396	long int last_member_offset;
397
398	#ifdef AIAMAGBIG
399	if ( big_archive )
400	{
401	sscanf (fl_header_big.fl_fstmoff, "%20ld", &member_offset);
402	sscanf (fl_header_big.fl_lstmoff, "%20ld", &last_member_offset);
403	}
404	else
405	#endif
406	{
407	sscanf (fl_header.fl_fstmoff, "%12ld", &member_offset);
408	sscanf (fl_header.fl_lstmoff, "%12ld", &last_member_offset);
409	}
410
411	if (member_offset == 0)
412	{
413	/* Empty archive. */
414	close (desc);
415	return 0;
416	}
417	#else
418	#ifndef M_XENIX
419	register long int member_offset = sizeof (int);
420	#else /* Xenix. */
421	register long int member_offset = sizeof (unsigned short int);
422	#endif /* Not Xenix. */
423	#endif
424	#endif
425
426	while (1)
427	{
428	register int nread;
429	struct ar_hdr member_header;
430	#ifdef AIAMAGBIG
431	struct ar_hdr_big member_header_big;
432	#endif
433	#ifdef AIAMAG
434	char name[256];
435	int name_len;
436	long int dateval;
437	int uidval, gidval;
438	long int data_offset;
439	#else
440	char namebuf[sizeof member_header.ar_name + 1];
441	char *name;
442	int is_namemap; /* Nonzero if this entry maps long names. */
443	#endif
444	long int eltsize;
445	int eltmode;
446	long int fnval;
447
448	if (lseek (desc, member_offset, 0) < 0)
449	{
450	(void) close (desc);
451	return -2;
452	}
453
454	#ifdef AIAMAG
455	#define AR_MEMHDR_SZ(x) (sizeof(x) - sizeof (x._ar_name))
456
457	#ifdef AIAMAGBIG
458	if (big_archive)
459	{
460	nread = read (desc, (char *) &member_header_big,
461	AR_MEMHDR_SZ(member_header_big) );
462
463	if (nread != AR_MEMHDR_SZ(member_header_big))
464	{
465	(void) close (desc);
466	return -2;
467	}
468
469	sscanf (member_header_big.ar_namlen, "%4d", &name_len);
470	nread = read (desc, name, name_len);
471
472	if (nread != name_len)
473	{
474	(void) close (desc);
475	return -2;
476	}
477
478	name[name_len] = 0;
479
480	sscanf (member_header_big.ar_date, "%12ld", &dateval);
481	sscanf (member_header_big.ar_uid, "%12d", &uidval);
482	sscanf (member_header_big.ar_gid, "%12d", &gidval);
483	sscanf (member_header_big.ar_mode, "%12o", &eltmode);
484	sscanf (member_header_big.ar_size, "%20ld", &eltsize);
485
486	data_offset = (member_offset + AR_MEMHDR_SZ(member_header_big)
487	+ name_len + 2);
488	}
489	else
490	#endif
491	{
492	nread = read (desc, (char *) &member_header,
493	AR_MEMHDR_SZ(member_header) );
494
495	if (nread != AR_MEMHDR_SZ(member_header))
496	{
497	(void) close (desc);
498	return -2;
499	}
500
501	sscanf (member_header.ar_namlen, "%4d", &name_len);
502	nread = read (desc, name, name_len);
503
504	if (nread != name_len)
505	{
506	(void) close (desc);
507	return -2;
508	}
509
510	name[name_len] = 0;
511
512	sscanf (member_header.ar_date, "%12ld", &dateval);
513	sscanf (member_header.ar_uid, "%12d", &uidval);
514	sscanf (member_header.ar_gid, "%12d", &gidval);
515	sscanf (member_header.ar_mode, "%12o", &eltmode);
516	sscanf (member_header.ar_size, "%12ld", &eltsize);
517
518	data_offset = (member_offset + AR_MEMHDR_SZ(member_header)
519	+ name_len + 2);
520	}
521	data_offset += data_offset % 2;
522
523	fnval =
524	(*function) (desc, name, 0,
525	member_offset, data_offset, eltsize,
526	dateval, uidval, gidval,
527	eltmode, arg);
528
529	#else /* Not AIAMAG. */
530	nread = read (desc, (char *) &member_header, AR_HDR_SIZE);
531	if (nread == 0)
532	/* No data left means end of file; that is OK. */
533	break;
534
535	if (nread != AR_HDR_SIZE
536	#if defined(ARFMAG) \|\| defined(ARFZMAG)
537	\|\| (
538	# ifdef ARFMAG
539	bcmp (member_header.ar_fmag, ARFMAG, 2)
540	# else
541	1
542	# endif
543	&&
544	# ifdef ARFZMAG
545	bcmp (member_header.ar_fmag, ARFZMAG, 2)
546	# else
547	1
548	# endif
549	)
550	#endif
551	)
552	{
553	(void) close (desc);
554	return -2;
555	}
556
557	name = namebuf;
558	bcopy (member_header.ar_name, name, sizeof member_header.ar_name);
559	{
560	register char *p = name + sizeof member_header.ar_name;
561	do
562	*p = '\0';
563	while (p > name && *--p == ' ');
564
565	#ifndef AIAMAG
566	/* If the member name is "//" or "ARFILENAMES/" this may be
567	a list of file name mappings. The maximum file name
568	length supported by the standard archive format is 14
569	characters. This member will actually always be the
570	first or second entry in the archive, but we don't check
571	that. */
572	is_namemap = (!strcmp (name, "//")
573	\|\| !strcmp (name, "ARFILENAMES/"));
574	#endif /* Not AIAMAG. */
575	/* On some systems, there is a slash after each member name. */
576	if (*p == '/')
577	*p = '\0';
578
579	#ifndef AIAMAG
580	/* If the member name starts with a space or a slash, this
581	is an index into the file name mappings (used by GNU ar).
582	Otherwise if the member name looks like #1/NUMBER the
583	real member name appears in the element data (used by
584	4.4BSD). */
585	if (! is_namemap
586	&& (name[0] == ' ' \|\| name[0] == '/')
587	&& namemap != 0)
588	{
589	name = namemap + atoi (name + 1);
590	long_name = 1;
591	}
592	else if (name[0] == '#'
593	&& name[1] == '1'
594	&& name[2] == '/')
595	{
596	int namesize = atoi (name + 3);
597
598	name = (char *) alloca (namesize + 1);
599	nread = read (desc, name, namesize);
600	if (nread != namesize)
601	{
602	close (desc);
603	return -2;
604	}
605	name[namesize] = '\0';
606
607	long_name = 1;
608	}
609	#endif /* Not AIAMAG. */
610	}
611
612	#ifndef M_XENIX
613	sscanf (member_header.ar_mode, "%o", &eltmode);
614	eltsize = atol (member_header.ar_size);
615	#else /* Xenix. */
616	eltmode = (unsigned short int) member_header.ar_mode;
617	eltsize = member_header.ar_size;
618	#endif /* Not Xenix. */
619
620	fnval =
621	(*function) (desc, name, ! long_name, member_offset,
622	member_offset + AR_HDR_SIZE, eltsize,
623	#ifndef M_XENIX
624	atol (member_header.ar_date),
625	atoi (member_header.ar_uid),
626	atoi (member_header.ar_gid),
627	#else /* Xenix. */
628	member_header.ar_date,
629	member_header.ar_uid,
630	member_header.ar_gid,
631	#endif /* Not Xenix. */
632	eltmode, arg);
633
634	#endif /* AIAMAG. */
635
636	if (fnval)
637	{
638	(void) close (desc);
639	return fnval;
640	}
641
642	#ifdef AIAMAG
643	if (member_offset == last_member_offset)
644	/* End of the chain. */
645	break;
646
647	#ifdef AIAMAGBIG
648	if (big_archive)
649	sscanf (member_header_big.ar_nxtmem, "%20ld", &member_offset);
650	else
651	#endif
652	sscanf (member_header.ar_nxtmem, "%12ld", &member_offset);
653
654	if (lseek (desc, member_offset, 0) != member_offset)
655	{
656	(void) close (desc);
657	return -2;
658	}
659	#else
660
661	/* If this member maps archive names, we must read it in. The
662	name map will always precede any members whose names must
663	be mapped. */
664	if (is_namemap)
665	{
666	char *clear;
667	char *limit;
668
669	namemap = (char *) alloca (eltsize);
670	nread = read (desc, namemap, eltsize);
671	if (nread != eltsize)
672	{
673	(void) close (desc);
674	return -2;
675	}
676
677	/* The names are separated by newlines. Some formats have
678	a trailing slash. Null terminate the strings for
679	convenience. */
680	limit = namemap + eltsize;
681	for (clear = namemap; clear < limit; clear++)
682	{
683	if (*clear == '\n')
684	{
685	*clear = '\0';
686	if (clear[-1] == '/')
687	clear[-1] = '\0';
688	}
689	}
690
691	is_namemap = 0;
692	}
693
694	member_offset += AR_HDR_SIZE + eltsize;
695	if (member_offset % 2 != 0)
696	member_offset++;
697	#endif
698	}
699	}
700
701	close (desc);
702	return 0;
703	}
704	#endif /* !VMS */
705
706
707	/* Return nonzero iff NAME matches MEM.
708	If TRUNCATED is nonzero, MEM may be truncated to
709	sizeof (struct ar_hdr.ar_name) - 1. */
710
711	int
712	ar_name_equal (char name, char mem, int truncated)
713	{
714	char *p;
715
716	p = strrchr (name, '/');
717	if (p != 0)
718	name = p + 1;
719
720	#ifndef VMS
721	if (truncated)
722	{
723	#ifdef AIAMAG
724	/* TRUNCATED should never be set on this system. */
725	abort ();
726	#else
727	struct ar_hdr hdr;
728	#if !defined (__hpux) && !defined (cray)
729	return strneq (name, mem, sizeof(hdr.ar_name) - 1);
730	#else
731	return strneq (name, mem, sizeof(hdr.ar_name) - 2);
732	#endif /* !__hpux && !cray */
733	#endif /* !AIAMAG */
734	}
735	#endif /* !VMS */
736
737	return !strcmp (name, mem);
738	}
739
740
741	#ifndef VMS
742	/* ARGSUSED */
743	static long int
744	ar_member_pos (int desc UNUSED, char *mem, int truncated,
745	long int hdrpos, long int datapos UNUSED, long int size UNUSED,
746	long int date UNUSED, int uid UNUSED, int gid UNUSED,
747	int mode UNUSED, char *name)
748	{
749	if (!ar_name_equal (name, mem, truncated))
750	return 0;
751	return hdrpos;
752	}
753
754	/* Set date of member MEMNAME in archive ARNAME to current time.
755	Returns 0 if successful,
756	-1 if file ARNAME does not exist,
757	-2 if not a valid archive,
758	-3 if other random system call error (including file read-only),
759	1 if valid but member MEMNAME does not exist. */
760
761	int
762	ar_member_touch (char arname, char memname)
763	{
764	long int pos = ar_scan (arname, ar_member_pos, (long int) memname);
765	int fd;
766	struct ar_hdr ar_hdr;
767	int i;
768	unsigned int ui;
769	struct stat statbuf;
770
771	if (pos < 0)
772	return (int) pos;
773	if (!pos)
774	return 1;
775
776	fd = open (arname, O_RDWR, 0666);
777	if (fd < 0)
778	return -3;
779	/* Read in this member's header */
780	if (lseek (fd, pos, 0) < 0)
781	goto lose;
782	if (AR_HDR_SIZE != read (fd, (char *) &ar_hdr, AR_HDR_SIZE))
783	goto lose;
784	/* Write back the header, thus touching the archive file. */
785	if (lseek (fd, pos, 0) < 0)
786	goto lose;
787	if (AR_HDR_SIZE != write (fd, (char *) &ar_hdr, AR_HDR_SIZE))
788	goto lose;
789	/* The file's mtime is the time we we want. */
790	EINTRLOOP (i, fstat (fd, &statbuf));
791	if (i < 0)
792	goto lose;
793	#if defined(ARFMAG) \|\| defined(ARFZMAG) \|\| defined(AIAMAG) \|\| defined(WINDOWS32)
794	/* Advance member's time to that time */
795	for (ui = 0; ui < sizeof ar_hdr.ar_date; ui++)
796	ar_hdr.ar_date[ui] = ' ';
797	sprintf (ar_hdr.ar_date, "%ld", (long int) statbuf.st_mtime);
798	#ifdef AIAMAG
799	ar_hdr.ar_date[strlen(ar_hdr.ar_date)] = ' ';
800	#endif
801	#else
802	ar_hdr.ar_date = statbuf.st_mtime;
803	#endif
804	/* Write back this member's header */
805	if (lseek (fd, pos, 0) < 0)
806	goto lose;
807	if (AR_HDR_SIZE != write (fd, (char *) &ar_hdr, AR_HDR_SIZE))
808	goto lose;
809	close (fd);
810	return 0;
811
812	lose:
813	i = errno;
814	close (fd);
815	errno = i;
816	return -3;
817	}
818	#endif
819
820
821	#ifdef TEST
822
823	long int
824	describe_member (int desc, char *name, int truncated,
825	long int hdrpos, long int datapos, long int size,
826	long int date, int uid, int gid, int mode)
827	{
828	extern char *ctime ();
829
830	printf (_("Member `%s'%s: %ld bytes at %ld (%ld).\n"),
831	name, truncated ? _(" (name might be truncated)") : "",
832	size, hdrpos, datapos);
833	printf (_(" Date %s"), ctime (&date));
834	printf (_(" uid = %d, gid = %d, mode = 0%o.\n"), uid, gid, mode);
835
836	return 0;
837	}
838
839	int
840	main (int argc, char **argv)
841	{
842	ar_scan (argv[1], describe_member);
843	return 0;
844	}
845
846	#endif /* TEST. */
847	#endif /* NO_ARCHIVES. */

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source: kBuild/vendor/gnumake/current/arscan.c@ 501

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