1229 lines
35 KiB
C
1229 lines
35 KiB
C
/*
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* Copyright (c) 1988, 1989, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)arch.c 8.2 (Berkeley) 1/2/94
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*/
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#ifndef lint
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#include <sys/cdefs.h>
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__RCSID("$FreeBSD$");
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#endif /* not lint */
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/*-
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* arch.c --
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* Functions to manipulate libraries, archives and their members.
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*
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* Once again, cacheing/hashing comes into play in the manipulation
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* of archives. The first time an archive is referenced, all of its members'
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* headers are read and hashed and the archive closed again. All hashed
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* archives are kept on a list which is searched each time an archive member
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* is referenced.
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*
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* The interface to this module is:
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* Arch_ParseArchive Given an archive specification, return a list
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* of GNode's, one for each member in the spec.
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* FAILURE is returned if the specification is
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* invalid for some reason.
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*
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* Arch_Touch Alter the modification time of the archive
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* member described by the given node to be
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* the current time.
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*
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* Arch_TouchLib Update the modification time of the library
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* described by the given node. This is special
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* because it also updates the modification time
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* of the library's table of contents.
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*
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* Arch_MTime Find the modification time of a member of
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* an archive *in the archive*. The time is also
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* placed in the member's GNode. Returns the
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* modification time.
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*
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* Arch_MemTime Find the modification time of a member of
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* an archive. Called when the member doesn't
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* already exist. Looks in the archive for the
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* modification time. Returns the modification
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* time.
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*
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* Arch_FindLib Search for a library along a path. The
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* library name in the GNode should be in
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* -l<name> format.
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*
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* Arch_LibOODate Special function to decide if a library node
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* is out-of-date.
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*
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* Arch_Init Initialize this module.
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*
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* Arch_End Cleanup this module.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/param.h>
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#include <ctype.h>
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#include <ar.h>
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#include <utime.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "make.h"
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#include "hash.h"
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#include "dir.h"
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#include "config.h"
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static Lst archives; /* Lst of archives we've already examined */
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typedef struct Arch {
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char *name; /* Name of archive */
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Hash_Table members; /* All the members of the archive described
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* by <name, struct ar_hdr *> key/value pairs */
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char *fnametab; /* Extended name table strings */
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size_t fnamesize; /* Size of the string table */
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} Arch;
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static int ArchFindArchive __P((ClientData, ClientData));
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static void ArchFree __P((ClientData));
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static struct ar_hdr *ArchStatMember __P((char *, char *, Boolean));
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static FILE *ArchFindMember __P((char *, char *, struct ar_hdr *, char *));
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#if defined(__svr4__) || defined(__SVR4) || defined(__ELF__)
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#define SVR4ARCHIVES
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static int ArchSVR4Entry __P((Arch *, char *, size_t, FILE *));
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#endif
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/*-
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*-----------------------------------------------------------------------
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* ArchFree --
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* Free memory used by an archive
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*
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* Results:
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* None.
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*
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* Side Effects:
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* None.
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*
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*-----------------------------------------------------------------------
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*/
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static void
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ArchFree(ap)
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ClientData ap;
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{
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Arch *a = (Arch *) ap;
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Hash_Search search;
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Hash_Entry *entry;
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/* Free memory from hash entries */
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for (entry = Hash_EnumFirst(&a->members, &search);
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entry != NULL;
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entry = Hash_EnumNext(&search))
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free((Address) Hash_GetValue (entry));
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free(a->name);
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efree(a->fnametab);
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Hash_DeleteTable(&a->members);
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free((Address) a);
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}
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/*-
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*-----------------------------------------------------------------------
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* Arch_ParseArchive --
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* Parse the archive specification in the given line and find/create
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* the nodes for the specified archive members, placing their nodes
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* on the given list.
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*
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* Results:
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* SUCCESS if it was a valid specification. The linePtr is updated
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* to point to the first non-space after the archive spec. The
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* nodes for the members are placed on the given list.
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*
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* Side Effects:
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* Some nodes may be created. The given list is extended.
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*
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*-----------------------------------------------------------------------
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*/
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ReturnStatus
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Arch_ParseArchive (linePtr, nodeLst, ctxt)
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char **linePtr; /* Pointer to start of specification */
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Lst nodeLst; /* Lst on which to place the nodes */
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GNode *ctxt; /* Context in which to expand variables */
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{
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register char *cp; /* Pointer into line */
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GNode *gn; /* New node */
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char *libName; /* Library-part of specification */
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char *memName; /* Member-part of specification */
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char nameBuf[MAKE_BSIZE]; /* temporary place for node name */
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char saveChar; /* Ending delimiter of member-name */
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Boolean subLibName; /* TRUE if libName should have/had
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* variable substitution performed on it */
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libName = *linePtr;
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subLibName = FALSE;
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for (cp = libName; *cp != '(' && *cp != '\0'; cp++) {
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if (*cp == '$') {
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/*
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* Variable spec, so call the Var module to parse the puppy
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* so we can safely advance beyond it...
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*/
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int length;
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Boolean freeIt;
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char *result;
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result=Var_Parse(cp, ctxt, TRUE, &length, &freeIt);
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if (result == var_Error) {
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return(FAILURE);
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} else {
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subLibName = TRUE;
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}
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if (freeIt) {
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free(result);
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}
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cp += length-1;
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}
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}
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*cp++ = '\0';
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if (subLibName) {
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libName = Var_Subst(NULL, libName, ctxt, TRUE);
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}
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for (;;) {
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/*
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* First skip to the start of the member's name, mark that
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* place and skip to the end of it (either white-space or
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* a close paren).
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*/
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Boolean doSubst = FALSE; /* TRUE if need to substitute in memName */
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while (*cp != '\0' && *cp != ')' && isspace (*cp)) {
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cp++;
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}
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memName = cp;
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while (*cp != '\0' && *cp != ')' && !isspace (*cp)) {
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if (*cp == '$') {
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/*
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* Variable spec, so call the Var module to parse the puppy
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* so we can safely advance beyond it...
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*/
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int length;
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Boolean freeIt;
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char *result;
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result=Var_Parse(cp, ctxt, TRUE, &length, &freeIt);
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if (result == var_Error) {
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return(FAILURE);
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} else {
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doSubst = TRUE;
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}
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if (freeIt) {
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free(result);
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}
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cp += length;
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} else {
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cp++;
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}
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}
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/*
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* If the specification ends without a closing parenthesis,
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* chances are there's something wrong (like a missing backslash),
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* so it's better to return failure than allow such things to happen
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*/
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if (*cp == '\0') {
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printf("No closing parenthesis in archive specification\n");
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return (FAILURE);
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}
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/*
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* If we didn't move anywhere, we must be done
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*/
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if (cp == memName) {
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break;
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}
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saveChar = *cp;
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*cp = '\0';
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/*
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* XXX: This should be taken care of intelligently by
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* SuffExpandChildren, both for the archive and the member portions.
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*/
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/*
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* If member contains variables, try and substitute for them.
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* This will slow down archive specs with dynamic sources, of course,
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* since we'll be (non-)substituting them three times, but them's
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* the breaks -- we need to do this since SuffExpandChildren calls
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* us, otherwise we could assume the thing would be taken care of
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* later.
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*/
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if (doSubst) {
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char *buf;
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char *sacrifice;
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char *oldMemName = memName;
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memName = Var_Subst(NULL, memName, ctxt, TRUE);
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/*
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* Now form an archive spec and recurse to deal with nested
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* variables and multi-word variable values.... The results
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* are just placed at the end of the nodeLst we're returning.
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*/
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buf = sacrifice = emalloc(strlen(memName)+strlen(libName)+3);
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sprintf(buf, "%s(%s)", libName, memName);
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if (strchr(memName, '$') && strcmp(memName, oldMemName) == 0) {
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/*
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* Must contain dynamic sources, so we can't deal with it now.
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* Just create an ARCHV node for the thing and let
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* SuffExpandChildren handle it...
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*/
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gn = Targ_FindNode(buf, TARG_CREATE);
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if (gn == NILGNODE) {
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free(buf);
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return(FAILURE);
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} else {
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gn->type |= OP_ARCHV;
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(void)Lst_AtEnd(nodeLst, (ClientData)gn);
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}
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} else if (Arch_ParseArchive(&sacrifice, nodeLst, ctxt)!=SUCCESS) {
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/*
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* Error in nested call -- free buffer and return FAILURE
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* ourselves.
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*/
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free(buf);
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return(FAILURE);
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}
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/*
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* Free buffer and continue with our work.
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*/
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free(buf);
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} else if (Dir_HasWildcards(memName)) {
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Lst members = Lst_Init(FALSE);
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char *member;
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Dir_Expand(memName, dirSearchPath, members);
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while (!Lst_IsEmpty(members)) {
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member = (char *)Lst_DeQueue(members);
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sprintf(nameBuf, "%s(%s)", libName, member);
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free(member);
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gn = Targ_FindNode (nameBuf, TARG_CREATE);
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if (gn == NILGNODE) {
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return (FAILURE);
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} else {
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/*
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* We've found the node, but have to make sure the rest of
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* the world knows it's an archive member, without having
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* to constantly check for parentheses, so we type the
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* thing with the OP_ARCHV bit before we place it on the
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* end of the provided list.
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*/
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gn->type |= OP_ARCHV;
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(void) Lst_AtEnd (nodeLst, (ClientData)gn);
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}
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}
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Lst_Destroy(members, NOFREE);
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} else {
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sprintf(nameBuf, "%s(%s)", libName, memName);
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gn = Targ_FindNode (nameBuf, TARG_CREATE);
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if (gn == NILGNODE) {
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return (FAILURE);
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} else {
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/*
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* We've found the node, but have to make sure the rest of the
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* world knows it's an archive member, without having to
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* constantly check for parentheses, so we type the thing with
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* the OP_ARCHV bit before we place it on the end of the
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* provided list.
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*/
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gn->type |= OP_ARCHV;
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(void) Lst_AtEnd (nodeLst, (ClientData)gn);
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}
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}
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if (doSubst) {
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free(memName);
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}
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*cp = saveChar;
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}
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/*
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* If substituted libName, free it now, since we need it no longer.
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*/
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if (subLibName) {
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free(libName);
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}
|
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|
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/*
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* We promised the pointer would be set up at the next non-space, so
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* we must advance cp there before setting *linePtr... (note that on
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* entrance to the loop, cp is guaranteed to point at a ')')
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*/
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do {
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cp++;
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} while (*cp != '\0' && isspace (*cp));
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*linePtr = cp;
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return (SUCCESS);
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}
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|
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/*-
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*-----------------------------------------------------------------------
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* ArchFindArchive --
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* See if the given archive is the one we are looking for. Called
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* From ArchStatMember and ArchFindMember via Lst_Find.
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*
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* Results:
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* 0 if it is, non-zero if it isn't.
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*
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* Side Effects:
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* None.
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*
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*-----------------------------------------------------------------------
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*/
|
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static int
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ArchFindArchive (ar, archName)
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ClientData ar; /* Current list element */
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ClientData archName; /* Name we want */
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{
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return (strcmp ((char *) archName, ((Arch *) ar)->name));
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}
|
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|
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/*-
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*-----------------------------------------------------------------------
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* ArchStatMember --
|
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* Locate a member of an archive, given the path of the archive and
|
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* the path of the desired member.
|
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*
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* Results:
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* A pointer to the current struct ar_hdr structure for the member. Note
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* That no position is returned, so this is not useful for touching
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* archive members. This is mostly because we have no assurances that
|
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* The archive will remain constant after we read all the headers, so
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* there's not much point in remembering the position...
|
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*
|
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* Side Effects:
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static struct ar_hdr *
|
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ArchStatMember (archive, member, hash)
|
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char *archive; /* Path to the archive */
|
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char *member; /* Name of member. If it is a path, only the
|
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* last component is used. */
|
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Boolean hash; /* TRUE if archive should be hashed if not
|
|
* already so. */
|
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{
|
|
#define AR_MAX_NAME_LEN (sizeof(arh.ar_name)-1)
|
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FILE * arch; /* Stream to archive */
|
|
int size; /* Size of archive member */
|
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char *cp; /* Useful character pointer */
|
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char magic[SARMAG];
|
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LstNode ln; /* Lst member containing archive descriptor */
|
|
Arch *ar; /* Archive descriptor */
|
|
Hash_Entry *he; /* Entry containing member's description */
|
|
struct ar_hdr arh; /* archive-member header for reading archive */
|
|
char memName[MAXPATHLEN+1];
|
|
/* Current member name while hashing. */
|
|
|
|
/*
|
|
* Because of space constraints and similar things, files are archived
|
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* using their final path components, not the entire thing, so we need
|
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* to point 'member' to the final component, if there is one, to make
|
|
* the comparisons easier...
|
|
*/
|
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cp = strrchr (member, '/');
|
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if ((cp != NULL) && (strcmp(member, RANLIBMAG) != 0))
|
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member = cp + 1;
|
|
|
|
ln = Lst_Find (archives, (ClientData) archive, ArchFindArchive);
|
|
if (ln != NILLNODE) {
|
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ar = (Arch *) Lst_Datum (ln);
|
|
|
|
he = Hash_FindEntry (&ar->members, member);
|
|
|
|
if (he != NULL) {
|
|
return ((struct ar_hdr *) Hash_GetValue (he));
|
|
} else {
|
|
/* Try truncated name */
|
|
char copy[AR_MAX_NAME_LEN+1];
|
|
int len = strlen (member);
|
|
|
|
if (len > AR_MAX_NAME_LEN) {
|
|
len = AR_MAX_NAME_LEN;
|
|
strncpy(copy, member, AR_MAX_NAME_LEN);
|
|
copy[AR_MAX_NAME_LEN] = '\0';
|
|
}
|
|
if ((he = Hash_FindEntry (&ar->members, copy)) != NULL)
|
|
return ((struct ar_hdr *) Hash_GetValue (he));
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
if (!hash) {
|
|
/*
|
|
* Caller doesn't want the thing hashed, just use ArchFindMember
|
|
* to read the header for the member out and close down the stream
|
|
* again. Since the archive is not to be hashed, we assume there's
|
|
* no need to allocate extra room for the header we're returning,
|
|
* so just declare it static.
|
|
*/
|
|
static struct ar_hdr sarh;
|
|
|
|
arch = ArchFindMember(archive, member, &sarh, "r");
|
|
|
|
if (arch == NULL) {
|
|
return (NULL);
|
|
} else {
|
|
fclose(arch);
|
|
return (&sarh);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We don't have this archive on the list yet, so we want to find out
|
|
* everything that's in it and cache it so we can get at it quickly.
|
|
*/
|
|
arch = fopen (archive, "r");
|
|
if (arch == NULL) {
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* We use the ARMAG string to make sure this is an archive we
|
|
* can handle...
|
|
*/
|
|
if ((fread (magic, SARMAG, 1, arch) != 1) ||
|
|
(strncmp (magic, ARMAG, SARMAG) != 0)) {
|
|
fclose (arch);
|
|
return (NULL);
|
|
}
|
|
|
|
ar = (Arch *)emalloc (sizeof (Arch));
|
|
ar->name = estrdup (archive);
|
|
ar->fnametab = NULL;
|
|
ar->fnamesize = 0;
|
|
Hash_InitTable (&ar->members, -1);
|
|
memName[AR_MAX_NAME_LEN] = '\0';
|
|
|
|
while (fread ((char *)&arh, sizeof (struct ar_hdr), 1, arch) == 1) {
|
|
if (strncmp ( arh.ar_fmag, ARFMAG, sizeof (arh.ar_fmag)) != 0) {
|
|
/*
|
|
* The header is bogus, so the archive is bad
|
|
* and there's no way we can recover...
|
|
*/
|
|
goto badarch;
|
|
} else {
|
|
/*
|
|
* We need to advance the stream's pointer to the start of the
|
|
* next header. Files are padded with newlines to an even-byte
|
|
* boundary, so we need to extract the size of the file from the
|
|
* 'size' field of the header and round it up during the seek.
|
|
*/
|
|
arh.ar_size[sizeof(arh.ar_size)-1] = '\0';
|
|
size = (int) strtol(arh.ar_size, NULL, 10);
|
|
|
|
(void) strncpy (memName, arh.ar_name, sizeof(arh.ar_name));
|
|
for (cp = &memName[AR_MAX_NAME_LEN]; *cp == ' '; cp--) {
|
|
continue;
|
|
}
|
|
cp[1] = '\0';
|
|
|
|
#ifdef SVR4ARCHIVES
|
|
/*
|
|
* svr4 names are slash terminated. Also svr4 extended AR format.
|
|
*/
|
|
if (memName[0] == '/') {
|
|
/*
|
|
* svr4 magic mode; handle it
|
|
*/
|
|
switch (ArchSVR4Entry(ar, memName, size, arch)) {
|
|
case -1: /* Invalid data */
|
|
goto badarch;
|
|
case 0: /* List of files entry */
|
|
continue;
|
|
default: /* Got the entry */
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
if (cp[0] == '/')
|
|
cp[0] = '\0';
|
|
}
|
|
#endif
|
|
|
|
#ifdef AR_EFMT1
|
|
/*
|
|
* BSD 4.4 extended AR format: #1/<namelen>, with name as the
|
|
* first <namelen> bytes of the file
|
|
*/
|
|
if (strncmp(memName, AR_EFMT1, sizeof(AR_EFMT1) - 1) == 0 &&
|
|
isdigit(memName[sizeof(AR_EFMT1) - 1])) {
|
|
|
|
unsigned int elen = atoi(&memName[sizeof(AR_EFMT1)-1]);
|
|
|
|
if (elen > MAXPATHLEN)
|
|
goto badarch;
|
|
if (fread (memName, elen, 1, arch) != 1)
|
|
goto badarch;
|
|
memName[elen] = '\0';
|
|
fseek (arch, -elen, SEEK_CUR);
|
|
if (DEBUG(ARCH) || DEBUG(MAKE)) {
|
|
printf("ArchStat: Extended format entry for %s\n", memName);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
he = Hash_CreateEntry (&ar->members, memName, NULL);
|
|
Hash_SetValue (he, (ClientData)emalloc (sizeof (struct ar_hdr)));
|
|
memcpy ((Address)Hash_GetValue (he), (Address)&arh,
|
|
sizeof (struct ar_hdr));
|
|
}
|
|
fseek (arch, (size + 1) & ~1, SEEK_CUR);
|
|
}
|
|
|
|
fclose (arch);
|
|
|
|
(void) Lst_AtEnd (archives, (ClientData) ar);
|
|
|
|
/*
|
|
* Now that the archive has been read and cached, we can look into
|
|
* the hash table to find the desired member's header.
|
|
*/
|
|
he = Hash_FindEntry (&ar->members, member);
|
|
|
|
if (he != NULL) {
|
|
return ((struct ar_hdr *) Hash_GetValue (he));
|
|
} else {
|
|
return (NULL);
|
|
}
|
|
|
|
badarch:
|
|
fclose (arch);
|
|
Hash_DeleteTable (&ar->members);
|
|
efree(ar->fnametab);
|
|
free ((Address)ar);
|
|
return (NULL);
|
|
}
|
|
|
|
#ifdef SVR4ARCHIVES
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ArchSVR4Entry --
|
|
* Parse an SVR4 style entry that begins with a slash.
|
|
* If it is "//", then load the table of filenames
|
|
* If it is "/<offset>", then try to substitute the long file name
|
|
* from offset of a table previously read.
|
|
*
|
|
* Results:
|
|
* -1: Bad data in archive
|
|
* 0: A table was loaded from the file
|
|
* 1: Name was successfully substituted from table
|
|
* 2: Name was not successfully substituted from table
|
|
*
|
|
* Side Effects:
|
|
* If a table is read, the file pointer is moved to the next archive
|
|
* member
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
ArchSVR4Entry(ar, name, size, arch)
|
|
Arch *ar;
|
|
char *name;
|
|
size_t size;
|
|
FILE *arch;
|
|
{
|
|
#define ARLONGNAMES1 "//"
|
|
#define ARLONGNAMES2 "/ARFILENAMES"
|
|
size_t entry;
|
|
char *ptr, *eptr;
|
|
|
|
if (strncmp(name, ARLONGNAMES1, sizeof(ARLONGNAMES1) - 1) == 0 ||
|
|
strncmp(name, ARLONGNAMES2, sizeof(ARLONGNAMES2) - 1) == 0) {
|
|
|
|
if (ar->fnametab != NULL) {
|
|
if (DEBUG(ARCH)) {
|
|
printf("Attempted to redefine an SVR4 name table\n");
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* This is a table of archive names, so we build one for
|
|
* ourselves
|
|
*/
|
|
ar->fnametab = emalloc(size);
|
|
ar->fnamesize = size;
|
|
|
|
if (fread(ar->fnametab, size, 1, arch) != 1) {
|
|
if (DEBUG(ARCH)) {
|
|
printf("Reading an SVR4 name table failed\n");
|
|
}
|
|
return -1;
|
|
}
|
|
eptr = ar->fnametab + size;
|
|
for (entry = 0, ptr = ar->fnametab; ptr < eptr; ptr++)
|
|
switch (*ptr) {
|
|
case '/':
|
|
entry++;
|
|
*ptr = '\0';
|
|
break;
|
|
|
|
case '\n':
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
if (DEBUG(ARCH)) {
|
|
printf("Found svr4 archive name table with %d entries\n", entry);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (name[1] == ' ' || name[1] == '\0')
|
|
return 2;
|
|
|
|
entry = (size_t) strtol(&name[1], &eptr, 0);
|
|
if ((*eptr != ' ' && *eptr != '\0') || eptr == &name[1]) {
|
|
if (DEBUG(ARCH)) {
|
|
printf("Could not parse SVR4 name %s\n", name);
|
|
}
|
|
return 2;
|
|
}
|
|
if (entry >= ar->fnamesize) {
|
|
if (DEBUG(ARCH)) {
|
|
printf("SVR4 entry offset %s is greater than %d\n",
|
|
name, ar->fnamesize);
|
|
}
|
|
return 2;
|
|
}
|
|
|
|
if (DEBUG(ARCH)) {
|
|
printf("Replaced %s with %s\n", name, &ar->fnametab[entry]);
|
|
}
|
|
|
|
(void) strncpy(name, &ar->fnametab[entry], MAXPATHLEN);
|
|
name[MAXPATHLEN] = '\0';
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* ArchFindMember --
|
|
* Locate a member of an archive, given the path of the archive and
|
|
* the path of the desired member. If the archive is to be modified,
|
|
* the mode should be "r+", if not, it should be "r".
|
|
*
|
|
* Results:
|
|
* An FILE *, opened for reading and writing, positioned at the
|
|
* start of the member's struct ar_hdr, or NULL if the member was
|
|
* nonexistent. The current struct ar_hdr for member.
|
|
*
|
|
* Side Effects:
|
|
* The passed struct ar_hdr structure is filled in.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static FILE *
|
|
ArchFindMember (archive, member, arhPtr, mode)
|
|
char *archive; /* Path to the archive */
|
|
char *member; /* Name of member. If it is a path, only the
|
|
* last component is used. */
|
|
struct ar_hdr *arhPtr; /* Pointer to header structure to be filled in */
|
|
char *mode; /* The mode for opening the stream */
|
|
{
|
|
FILE * arch; /* Stream to archive */
|
|
int size; /* Size of archive member */
|
|
char *cp; /* Useful character pointer */
|
|
char magic[SARMAG];
|
|
int len, tlen;
|
|
|
|
arch = fopen (archive, mode);
|
|
if (arch == NULL) {
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* We use the ARMAG string to make sure this is an archive we
|
|
* can handle...
|
|
*/
|
|
if ((fread (magic, SARMAG, 1, arch) != 1) ||
|
|
(strncmp (magic, ARMAG, SARMAG) != 0)) {
|
|
fclose (arch);
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Because of space constraints and similar things, files are archived
|
|
* using their final path components, not the entire thing, so we need
|
|
* to point 'member' to the final component, if there is one, to make
|
|
* the comparisons easier...
|
|
*/
|
|
cp = strrchr (member, '/');
|
|
if ((cp != NULL) && (strcmp(member, RANLIBMAG) != 0)) {
|
|
member = cp + 1;
|
|
}
|
|
len = tlen = strlen (member);
|
|
if (len > sizeof (arhPtr->ar_name)) {
|
|
tlen = sizeof (arhPtr->ar_name);
|
|
}
|
|
|
|
while (fread ((char *)arhPtr, sizeof (struct ar_hdr), 1, arch) == 1) {
|
|
if (strncmp(arhPtr->ar_fmag, ARFMAG, sizeof (arhPtr->ar_fmag) ) != 0) {
|
|
/*
|
|
* The header is bogus, so the archive is bad
|
|
* and there's no way we can recover...
|
|
*/
|
|
fclose (arch);
|
|
return (NULL);
|
|
} else if (strncmp (member, arhPtr->ar_name, tlen) == 0) {
|
|
/*
|
|
* If the member's name doesn't take up the entire 'name' field,
|
|
* we have to be careful of matching prefixes. Names are space-
|
|
* padded to the right, so if the character in 'name' at the end
|
|
* of the matched string is anything but a space, this isn't the
|
|
* member we sought.
|
|
*/
|
|
if (tlen != sizeof(arhPtr->ar_name) && arhPtr->ar_name[tlen] != ' '){
|
|
goto skip;
|
|
} else {
|
|
/*
|
|
* To make life easier, we reposition the file at the start
|
|
* of the header we just read before we return the stream.
|
|
* In a more general situation, it might be better to leave
|
|
* the file at the actual member, rather than its header, but
|
|
* not here...
|
|
*/
|
|
fseek (arch, -sizeof(struct ar_hdr), SEEK_CUR);
|
|
return (arch);
|
|
}
|
|
} else
|
|
#ifdef AR_EFMT1
|
|
/*
|
|
* BSD 4.4 extended AR format: #1/<namelen>, with name as the
|
|
* first <namelen> bytes of the file
|
|
*/
|
|
if (strncmp(arhPtr->ar_name, AR_EFMT1,
|
|
sizeof(AR_EFMT1) - 1) == 0 &&
|
|
isdigit(arhPtr->ar_name[sizeof(AR_EFMT1) - 1])) {
|
|
|
|
unsigned int elen = atoi(&arhPtr->ar_name[sizeof(AR_EFMT1)-1]);
|
|
char ename[MAXPATHLEN];
|
|
|
|
if (elen > MAXPATHLEN) {
|
|
fclose (arch);
|
|
return NULL;
|
|
}
|
|
if (fread (ename, elen, 1, arch) != 1) {
|
|
fclose (arch);
|
|
return NULL;
|
|
}
|
|
ename[elen] = '\0';
|
|
if (DEBUG(ARCH) || DEBUG(MAKE)) {
|
|
printf("ArchFind: Extended format entry for %s\n", ename);
|
|
}
|
|
if (strncmp(ename, member, len) == 0) {
|
|
/* Found as extended name */
|
|
fseek (arch, -sizeof(struct ar_hdr) - elen, SEEK_CUR);
|
|
return (arch);
|
|
}
|
|
fseek (arch, -elen, SEEK_CUR);
|
|
goto skip;
|
|
} else
|
|
#endif
|
|
{
|
|
skip:
|
|
/*
|
|
* This isn't the member we're after, so we need to advance the
|
|
* stream's pointer to the start of the next header. Files are
|
|
* padded with newlines to an even-byte boundary, so we need to
|
|
* extract the size of the file from the 'size' field of the
|
|
* header and round it up during the seek.
|
|
*/
|
|
arhPtr->ar_size[sizeof(arhPtr->ar_size)-1] = '\0';
|
|
size = (int) strtol(arhPtr->ar_size, NULL, 10);
|
|
fseek (arch, (size + 1) & ~1, SEEK_CUR);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We've looked everywhere, but the member is not to be found. Close the
|
|
* archive and return NULL -- an error.
|
|
*/
|
|
fclose (arch);
|
|
return (NULL);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Arch_Touch --
|
|
* Touch a member of an archive.
|
|
*
|
|
* Results:
|
|
* The 'time' field of the member's header is updated.
|
|
*
|
|
* Side Effects:
|
|
* The modification time of the entire archive is also changed.
|
|
* For a library, this could necessitate the re-ranlib'ing of the
|
|
* whole thing.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Arch_Touch (gn)
|
|
GNode *gn; /* Node of member to touch */
|
|
{
|
|
FILE * arch; /* Stream open to archive, positioned properly */
|
|
struct ar_hdr arh; /* Current header describing member */
|
|
char *p1, *p2;
|
|
|
|
arch = ArchFindMember(Var_Value (ARCHIVE, gn, &p1),
|
|
Var_Value (TARGET, gn, &p2),
|
|
&arh, "r+");
|
|
efree(p1);
|
|
efree(p2);
|
|
sprintf(arh.ar_date, "%-12ld", (long) now);
|
|
|
|
if (arch != NULL) {
|
|
(void)fwrite ((char *)&arh, sizeof (struct ar_hdr), 1, arch);
|
|
fclose (arch);
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Arch_TouchLib --
|
|
* Given a node which represents a library, touch the thing, making
|
|
* sure that the table of contents also is touched.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* Both the modification time of the library and of the RANLIBMAG
|
|
* member are set to 'now'.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Arch_TouchLib (gn)
|
|
GNode *gn; /* The node of the library to touch */
|
|
{
|
|
#ifdef RANLIBMAG
|
|
FILE * arch; /* Stream open to archive */
|
|
struct ar_hdr arh; /* Header describing table of contents */
|
|
struct utimbuf times; /* Times for utime() call */
|
|
|
|
arch = ArchFindMember (gn->path, RANLIBMAG, &arh, "r+");
|
|
sprintf(arh.ar_date, "%-12ld", (long) now);
|
|
|
|
if (arch != NULL) {
|
|
(void)fwrite ((char *)&arh, sizeof (struct ar_hdr), 1, arch);
|
|
fclose (arch);
|
|
|
|
times.actime = times.modtime = now;
|
|
utime(gn->path, ×);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Arch_MTime --
|
|
* Return the modification time of a member of an archive.
|
|
*
|
|
* Results:
|
|
* The modification time (seconds).
|
|
*
|
|
* Side Effects:
|
|
* The mtime field of the given node is filled in with the value
|
|
* returned by the function.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
int
|
|
Arch_MTime (gn)
|
|
GNode *gn; /* Node describing archive member */
|
|
{
|
|
struct ar_hdr *arhPtr; /* Header of desired member */
|
|
int modTime; /* Modification time as an integer */
|
|
char *p1, *p2;
|
|
|
|
arhPtr = ArchStatMember (Var_Value (ARCHIVE, gn, &p1),
|
|
Var_Value (TARGET, gn, &p2),
|
|
TRUE);
|
|
efree(p1);
|
|
efree(p2);
|
|
|
|
if (arhPtr != NULL) {
|
|
modTime = (int) strtol(arhPtr->ar_date, NULL, 10);
|
|
} else {
|
|
modTime = 0;
|
|
}
|
|
|
|
gn->mtime = modTime;
|
|
return (modTime);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Arch_MemMTime --
|
|
* Given a non-existent archive member's node, get its modification
|
|
* time from its archived form, if it exists.
|
|
*
|
|
* Results:
|
|
* The modification time.
|
|
*
|
|
* Side Effects:
|
|
* The mtime field is filled in.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
int
|
|
Arch_MemMTime (gn)
|
|
GNode *gn;
|
|
{
|
|
LstNode ln;
|
|
GNode *pgn;
|
|
char *nameStart,
|
|
*nameEnd;
|
|
|
|
if (Lst_Open (gn->parents) != SUCCESS) {
|
|
gn->mtime = 0;
|
|
return (0);
|
|
}
|
|
while ((ln = Lst_Next (gn->parents)) != NILLNODE) {
|
|
pgn = (GNode *) Lst_Datum (ln);
|
|
|
|
if (pgn->type & OP_ARCHV) {
|
|
/*
|
|
* If the parent is an archive specification and is being made
|
|
* and its member's name matches the name of the node we were
|
|
* given, record the modification time of the parent in the
|
|
* child. We keep searching its parents in case some other
|
|
* parent requires this child to exist...
|
|
*/
|
|
nameStart = strchr (pgn->name, '(') + 1;
|
|
nameEnd = strchr (nameStart, ')');
|
|
|
|
if (pgn->make &&
|
|
strncmp(nameStart, gn->name, nameEnd - nameStart) == 0) {
|
|
gn->mtime = Arch_MTime(pgn);
|
|
}
|
|
} else if (pgn->make) {
|
|
/*
|
|
* Something which isn't a library depends on the existence of
|
|
* this target, so it needs to exist.
|
|
*/
|
|
gn->mtime = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
Lst_Close (gn->parents);
|
|
|
|
return (gn->mtime);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Arch_FindLib --
|
|
* Search for a library along the given search path.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* The node's 'path' field is set to the found path (including the
|
|
* actual file name, not -l...). If the system can handle the -L
|
|
* flag when linking (or we cannot find the library), we assume that
|
|
* the user has placed the .LIBRARIES variable in the final linking
|
|
* command (or the linker will know where to find it) and set the
|
|
* TARGET variable for this node to be the node's name. Otherwise,
|
|
* we set the TARGET variable to be the full path of the library,
|
|
* as returned by Dir_FindFile.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Arch_FindLib (gn, path)
|
|
GNode *gn; /* Node of library to find */
|
|
Lst path; /* Search path */
|
|
{
|
|
char *libName; /* file name for archive */
|
|
|
|
libName = (char *)emalloc (strlen (gn->name) + 6 - 2);
|
|
sprintf(libName, "lib%s.a", &gn->name[2]);
|
|
|
|
gn->path = Dir_FindFile (libName, path);
|
|
|
|
free (libName);
|
|
|
|
#ifdef LIBRARIES
|
|
Var_Set (TARGET, gn->name, gn);
|
|
#else
|
|
Var_Set (TARGET, gn->path == NULL ? gn->name : gn->path, gn);
|
|
#endif /* LIBRARIES */
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Arch_LibOODate --
|
|
* Decide if a node with the OP_LIB attribute is out-of-date. Called
|
|
* from Make_OODate to make its life easier.
|
|
*
|
|
* There are several ways for a library to be out-of-date that are
|
|
* not available to ordinary files. In addition, there are ways
|
|
* that are open to regular files that are not available to
|
|
* libraries. A library that is only used as a source is never
|
|
* considered out-of-date by itself. This does not preclude the
|
|
* library's modification time from making its parent be out-of-date.
|
|
* A library will be considered out-of-date for any of these reasons,
|
|
* given that it is a target on a dependency line somewhere:
|
|
* Its modification time is less than that of one of its
|
|
* sources (gn->mtime < gn->cmtime).
|
|
* Its modification time is greater than the time at which the
|
|
* make began (i.e. it's been modified in the course
|
|
* of the make, probably by archiving).
|
|
* The modification time of one of its sources is greater than
|
|
* the one of its RANLIBMAG member (i.e. its table of contents
|
|
* is out-of-date). We don't compare of the archive time
|
|
* vs. TOC time because they can be too close. In my
|
|
* opinion we should not bother with the TOC at all since
|
|
* this is used by 'ar' rules that affect the data contents
|
|
* of the archive, not by ranlib rules, which affect the
|
|
* TOC.
|
|
*
|
|
* Results:
|
|
* TRUE if the library is out-of-date. FALSE otherwise.
|
|
*
|
|
* Side Effects:
|
|
* The library will be hashed if it hasn't been already.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
Boolean
|
|
Arch_LibOODate (gn)
|
|
GNode *gn; /* The library's graph node */
|
|
{
|
|
Boolean oodate;
|
|
|
|
if (OP_NOP(gn->type) && Lst_IsEmpty(gn->children)) {
|
|
oodate = FALSE;
|
|
} else if ((gn->mtime > now) || (gn->mtime < gn->cmtime)) {
|
|
oodate = TRUE;
|
|
} else {
|
|
#ifdef RANLIBMAG
|
|
struct ar_hdr *arhPtr; /* Header for __.SYMDEF */
|
|
int modTimeTOC; /* The table-of-contents's mod time */
|
|
|
|
arhPtr = ArchStatMember (gn->path, RANLIBMAG, FALSE);
|
|
|
|
if (arhPtr != NULL) {
|
|
modTimeTOC = (int) strtol(arhPtr->ar_date, NULL, 10);
|
|
|
|
if (DEBUG(ARCH) || DEBUG(MAKE)) {
|
|
printf("%s modified %s...", RANLIBMAG, Targ_FmtTime(modTimeTOC));
|
|
}
|
|
oodate = (gn->cmtime > modTimeTOC);
|
|
} else {
|
|
/*
|
|
* A library w/o a table of contents is out-of-date
|
|
*/
|
|
if (DEBUG(ARCH) || DEBUG(MAKE)) {
|
|
printf("No t.o.c....");
|
|
}
|
|
oodate = TRUE;
|
|
}
|
|
#else
|
|
oodate = (gn->mtime == 0); /* out-of-date if not present */
|
|
#endif
|
|
}
|
|
return (oodate);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Arch_Init --
|
|
* Initialize things for this module.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* The 'archives' list is initialized.
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Arch_Init ()
|
|
{
|
|
archives = Lst_Init (FALSE);
|
|
}
|
|
|
|
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Arch_End --
|
|
* Cleanup things for this module.
|
|
*
|
|
* Results:
|
|
* None.
|
|
*
|
|
* Side Effects:
|
|
* The 'archives' list is freed
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Arch_End ()
|
|
{
|
|
Lst_Destroy(archives, ArchFree);
|
|
}
|