| Current Path : /usr/src/usr.bin/csup/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/usr.bin/csup/lister.c |
/*-
* Copyright (c) 2003-2006, Maxime Henrion <mux@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: release/9.1.0/usr.bin/csup/lister.c 204556 2010-03-02 07:26:07Z lulf $
*/
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "attrstack.h"
#include "config.h"
#include "fattr.h"
#include "globtree.h"
#include "lister.h"
#include "misc.h"
#include "mux.h"
#include "proto.h"
#include "status.h"
#include "stream.h"
/* Internal error codes. */
#define LISTER_ERR_WRITE (-1) /* Error writing to server. */
#define LISTER_ERR_STATUS (-2) /* Status file error in lstr->errmsg. */
struct lister {
struct config *config;
struct stream *wr;
char *errmsg;
};
static int lister_batch(struct lister *);
static int lister_coll(struct lister *, struct coll *, struct status *);
static int lister_dodirdown(struct lister *, struct coll *,
struct statusrec *, struct attrstack *as);
static int lister_dodirup(struct lister *, struct coll *,
struct statusrec *, struct attrstack *as);
static int lister_dofile(struct lister *, struct coll *,
struct statusrec *);
static int lister_dodead(struct lister *, struct coll *,
struct statusrec *);
static int lister_dorcsfile(struct lister *, struct coll *,
struct statusrec *);
static int lister_dorcsdead(struct lister *, struct coll *,
struct statusrec *);
void *
lister(void *arg)
{
struct thread_args *args;
struct lister lbuf, *l;
int error;
args = arg;
l = &lbuf;
l->config = args->config;
l->wr = args->wr;
l->errmsg = NULL;
error = lister_batch(l);
switch (error) {
case LISTER_ERR_WRITE:
xasprintf(&args->errmsg,
"TreeList failed: Network write failure: %s",
strerror(errno));
args->status = STATUS_TRANSIENTFAILURE;
break;
case LISTER_ERR_STATUS:
xasprintf(&args->errmsg,
"TreeList failed: %s. Delete it and try again.",
l->errmsg);
free(l->errmsg);
args->status = STATUS_FAILURE;
break;
default:
assert(error == 0);
args->status = STATUS_SUCCESS;
};
return (NULL);
}
static int
lister_batch(struct lister *l)
{
struct config *config;
struct stream *wr;
struct status *st;
struct coll *coll;
int error;
config = l->config;
wr = l->wr;
STAILQ_FOREACH(coll, &config->colls, co_next) {
if (coll->co_options & CO_SKIP)
continue;
st = status_open(coll, -1, &l->errmsg);
if (st == NULL)
return (LISTER_ERR_STATUS);
error = proto_printf(wr, "COLL %s %s\n", coll->co_name,
coll->co_release);
if (error)
return (LISTER_ERR_WRITE);
stream_flush(wr);
if (coll->co_options & CO_COMPRESS)
stream_filter_start(wr, STREAM_FILTER_ZLIB, NULL);
error = lister_coll(l, coll, st);
status_close(st, NULL);
if (error)
return (error);
if (coll->co_options & CO_COMPRESS)
stream_filter_stop(wr);
stream_flush(wr);
}
error = proto_printf(wr, ".\n");
if (error)
return (LISTER_ERR_WRITE);
return (0);
}
/* List a single collection based on the status file. */
static int
lister_coll(struct lister *l, struct coll *coll, struct status *st)
{
struct stream *wr;
struct attrstack *as;
struct statusrec *sr;
struct fattr *fa;
size_t i;
int depth, error, ret, prunedepth;
wr = l->wr;
depth = 0;
prunedepth = INT_MAX;
as = attrstack_new();
while ((ret = status_get(st, NULL, 0, 0, &sr)) == 1) {
switch (sr->sr_type) {
case SR_DIRDOWN:
depth++;
if (depth < prunedepth) {
error = lister_dodirdown(l, coll, sr, as);
if (error < 0)
goto bad;
if (error)
prunedepth = depth;
}
break;
case SR_DIRUP:
if (depth < prunedepth) {
error = lister_dodirup(l, coll, sr, as);
if (error)
goto bad;
} else if (depth == prunedepth) {
/* Finished pruning. */
prunedepth = INT_MAX;
}
depth--;
continue;
case SR_CHECKOUTLIVE:
if (depth < prunedepth) {
error = lister_dofile(l, coll, sr);
if (error)
goto bad;
}
break;
case SR_CHECKOUTDEAD:
if (depth < prunedepth) {
error = lister_dodead(l, coll, sr);
if (error)
goto bad;
}
break;
case SR_FILEDEAD:
if (depth < prunedepth) {
if (!(coll->co_options & CO_CHECKOUTMODE)) {
error = lister_dorcsdead(l, coll, sr);
if (error)
goto bad;
}
}
break;
case SR_FILELIVE:
if (depth < prunedepth) {
if (!(coll->co_options & CO_CHECKOUTMODE)) {
error = lister_dorcsfile(l, coll, sr);
if (error)
goto bad;
}
}
break;
}
}
if (ret == -1) {
l->errmsg = status_errmsg(st);
error = LISTER_ERR_STATUS;
goto bad;
}
assert(status_eof(st));
assert(depth == 0);
error = proto_printf(wr, ".\n");
attrstack_free(as);
if (error)
return (LISTER_ERR_WRITE);
return (0);
bad:
for (i = 0; i < attrstack_size(as); i++) {
fa = attrstack_pop(as);
fattr_free(fa);
}
attrstack_free(as);
return (error);
}
/* Handle a directory up entry found in the status file. */
static int
lister_dodirdown(struct lister *l, struct coll *coll, struct statusrec *sr,
struct attrstack *as)
{
struct config *config;
struct stream *wr;
struct fattr *fa, *fa2;
char *path;
int error;
config = l->config;
wr = l->wr;
if (!globtree_test(coll->co_dirfilter, sr->sr_file))
return (1);
if (coll->co_options & CO_TRUSTSTATUSFILE) {
fa = fattr_new(FT_DIRECTORY, -1);
} else {
xasprintf(&path, "%s/%s", coll->co_prefix, sr->sr_file);
fa = fattr_frompath(path, FATTR_NOFOLLOW);
if (fa == NULL) {
/* The directory doesn't exist, prune
* everything below it. */
free(path);
return (1);
}
if (fattr_type(fa) == FT_SYMLINK) {
fa2 = fattr_frompath(path, FATTR_FOLLOW);
if (fa2 != NULL && fattr_type(fa2) == FT_DIRECTORY) {
/* XXX - When not in checkout mode, CVSup warns
* here about the file being a symlink to a
* directory instead of a directory. */
fattr_free(fa);
fa = fa2;
} else {
fattr_free(fa2);
}
}
free(path);
}
if (fattr_type(fa) != FT_DIRECTORY) {
fattr_free(fa);
/* Report it as something bogus so
* that it will be replaced. */
error = proto_printf(wr, "F %s %F\n", pathlast(sr->sr_file),
fattr_bogus, config->fasupport, coll->co_attrignore);
if (error)
return (LISTER_ERR_WRITE);
return (1);
}
/* It really is a directory. */
attrstack_push(as, fa);
error = proto_printf(wr, "D %s\n", pathlast(sr->sr_file));
if (error)
return (LISTER_ERR_WRITE);
return (0);
}
/* Handle a directory up entry found in the status file. */
static int
lister_dodirup(struct lister *l, struct coll *coll, struct statusrec *sr,
struct attrstack *as)
{
struct config *config;
const struct fattr *sendattr;
struct stream *wr;
struct fattr *fa, *fa2;
int error;
config = l->config;
wr = l->wr;
fa = attrstack_pop(as);
if (coll->co_options & CO_TRUSTSTATUSFILE) {
fattr_free(fa);
fa = sr->sr_clientattr;
}
fa2 = sr->sr_clientattr;
if (fattr_equal(fa, fa2))
sendattr = fa;
else
sendattr = fattr_bogus;
error = proto_printf(wr, "U %F\n", sendattr, config->fasupport,
coll->co_attrignore);
if (error)
return (LISTER_ERR_WRITE);
if (!(coll->co_options & CO_TRUSTSTATUSFILE))
fattr_free(fa);
/* XXX CVSup flushes here for some reason with a comment saying
"Be smarter". We don't flush when listing other file types. */
stream_flush(wr);
return (0);
}
/* Handle a checkout live entry found in the status file. */
static int
lister_dofile(struct lister *l, struct coll *coll, struct statusrec *sr)
{
struct config *config;
struct stream *wr;
const struct fattr *sendattr, *fa;
struct fattr *fa2, *rfa;
char *path, *spath;
int error;
if (!globtree_test(coll->co_filefilter, sr->sr_file))
return (0);
config = l->config;
wr = l->wr;
rfa = NULL;
sendattr = NULL;
error = 0;
if (!(coll->co_options & CO_TRUSTSTATUSFILE)) {
path = checkoutpath(coll->co_prefix, sr->sr_file);
if (path == NULL) {
spath = coll_statuspath(coll);
xasprintf(&l->errmsg, "Error in \"%s\": "
"Invalid filename \"%s\"", spath, sr->sr_file);
free(spath);
return (LISTER_ERR_STATUS);
}
rfa = fattr_frompath(path, FATTR_NOFOLLOW);
free(path);
if (rfa == NULL) {
/*
* According to the checkouts file we should have
* this file but we don't. Maybe the user deleted
* the file, or maybe the checkouts file is wrong.
* List the file with bogus attributes to cause the
* server to get things back in sync again.
*/
sendattr = fattr_bogus;
goto send;
}
fa = rfa;
} else {
fa = sr->sr_clientattr;
}
fa2 = fattr_forcheckout(sr->sr_serverattr, coll->co_umask);
if (!fattr_equal(fa, sr->sr_clientattr) || !fattr_equal(fa, fa2) ||
strcmp(coll->co_tag, sr->sr_tag) != 0 ||
strcmp(coll->co_date, sr->sr_date) != 0) {
/*
* The file corresponds to the information we have
* recorded about it, and its moded is correct for
* the requested umask setting.
*/
sendattr = fattr_bogus;
} else {
/*
* Either the file has been touched, or we are asking
* for a different revision than the one we recorded
* information about, or its mode isn't right (because
* it was last updated using a version of CVSup that
* wasn't so strict about modes).
*/
sendattr = sr->sr_serverattr;
}
fattr_free(fa2);
if (rfa != NULL)
fattr_free(rfa);
send:
error = proto_printf(wr, "F %s %F\n", pathlast(sr->sr_file), sendattr,
config->fasupport, coll->co_attrignore);
if (error)
return (LISTER_ERR_WRITE);
return (0);
}
/* Handle a rcs file live entry found in the status file. */
static int
lister_dorcsfile(struct lister *l, struct coll *coll, struct statusrec *sr)
{
struct config *config;
struct stream *wr;
const struct fattr *sendattr;
struct fattr *fa;
char *path, *spath;
size_t len;
int error;
if (!globtree_test(coll->co_filefilter, sr->sr_file))
return (0);
config = l->config;
wr = l->wr;
if (!(coll->co_options & CO_TRUSTSTATUSFILE)) {
path = cvspath(coll->co_prefix, sr->sr_file, 0);
if (path == NULL) {
spath = coll_statuspath(coll);
xasprintf(&l->errmsg, "Error in \"%s\": "
"Invalid filename \"%s\"", spath, sr->sr_file);
free(spath);
return (LISTER_ERR_STATUS);
}
fa = fattr_frompath(path, FATTR_NOFOLLOW);
free(path);
} else
fa = sr->sr_clientattr;
if (fa != NULL && fattr_equal(fa, sr->sr_clientattr)) {
/*
* If the file is an RCS file, we use "loose" equality, so sizes
* may disagress because of differences in whitespace.
*/
if (isrcs(sr->sr_file, &len) &&
!(coll->co_options & CO_NORCS) &&
!(coll->co_options & CO_STRICTCHECKRCS)) {
fattr_maskout(fa, FA_SIZE);
}
sendattr = fa;
} else {
/*
* If different, the user may have changed it, so we report
* bogus attributes to force a full comparison.
*/
sendattr = fattr_bogus;
}
error = proto_printf(wr, "F %s %F\n", pathlast(sr->sr_file), sendattr,
config->fasupport, coll->co_attrignore);
if (error)
return (LISTER_ERR_WRITE);
return (0);
}
/* Handle a checkout dead entry found in the status file. */
static int
lister_dodead(struct lister *l, struct coll *coll, struct statusrec *sr)
{
struct config *config;
struct stream *wr;
const struct fattr *sendattr;
struct fattr *fa;
char *path, *spath;
int error;
if (!globtree_test(coll->co_filefilter, sr->sr_file))
return (0);
config = l->config;
wr = l->wr;
if (!(coll->co_options & CO_TRUSTSTATUSFILE)) {
path = checkoutpath(coll->co_prefix, sr->sr_file);
if (path == NULL) {
spath = coll_statuspath(coll);
xasprintf(&l->errmsg, "Error in \"%s\": "
"Invalid filename \"%s\"", spath, sr->sr_file);
free(spath);
return (LISTER_ERR_STATUS);
}
fa = fattr_frompath(path, FATTR_NOFOLLOW);
free(path);
if (fa != NULL && fattr_type(fa) != FT_DIRECTORY) {
/*
* We shouldn't have this file but we do. Report
* it to the server, which will either send a
* deletion request, of (if the file has come alive)
* sent the correct version.
*/
fattr_free(fa);
error = proto_printf(wr, "F %s %F\n",
pathlast(sr->sr_file), fattr_bogus,
config->fasupport, coll->co_attrignore);
if (error)
return (LISTER_ERR_WRITE);
return (0);
}
fattr_free(fa);
}
if (strcmp(coll->co_tag, sr->sr_tag) != 0 ||
strcmp(coll->co_date, sr->sr_date) != 0)
sendattr = fattr_bogus;
else
sendattr = sr->sr_serverattr;
error = proto_printf(wr, "f %s %F\n", pathlast(sr->sr_file), sendattr,
config->fasupport, coll->co_attrignore);
if (error)
return (LISTER_ERR_WRITE);
return (0);
}
/* Handle a rcs file dead entry found in the status file. */
static int
lister_dorcsdead(struct lister *l, struct coll *coll, struct statusrec *sr)
{
struct config *config;
struct stream *wr;
const struct fattr *sendattr;
struct fattr *fa;
char *path, *spath;
size_t len;
int error;
if (!globtree_test(coll->co_filefilter, sr->sr_file))
return (0);
config = l->config;
wr = l->wr;
if (!coll->co_options & CO_TRUSTSTATUSFILE) {
path = cvspath(coll->co_prefix, sr->sr_file, 1);
if (path == NULL) {
spath = coll_statuspath(coll);
xasprintf(&l->errmsg, "Error in \"%s\": "
"Invalid filename \"%s\"", spath, sr->sr_file);
free(spath);
return (LISTER_ERR_STATUS);
}
fa = fattr_frompath(path, FATTR_NOFOLLOW);
free(path);
} else
fa = sr->sr_clientattr;
if (fattr_equal(fa, sr->sr_clientattr)) {
/*
* If the file is an RCS file, we use "loose" equality, so sizes
* may disagress because of differences in whitespace.
*/
if (isrcs(sr->sr_file, &len) &&
!(coll->co_options & CO_NORCS) &&
!(coll->co_options & CO_STRICTCHECKRCS)) {
fattr_maskout(fa, FA_SIZE);
}
sendattr = fa;
} else {
/*
* If different, the user may have changed it, so we report
* bogus attributes to force a full comparison.
*/
sendattr = fattr_bogus;
}
error = proto_printf(wr, "f %s %F\n", pathlast(sr->sr_file), sendattr,
config->fasupport, coll->co_attrignore);
if (error)
return (LISTER_ERR_WRITE);
return (0);
}