enum sess_close
http_DoConnection(const struct http *hp)
{
char *p, *q;
enum sess_close ret;
unsigned u;
if (!http_GetHdr(hp, H_Connection, &p)) {
if (hp->protover < 11)
return (SC_REQ_HTTP10);
return (SC_NULL);
}
ret = SC_NULL;
AN(p);
for (; *p; p++) {
if (vct_issp(*p))
continue;
if (*p == ',')
continue;
for (q = p + 1; *q; q++)
if (*q == ',' || vct_issp(*q))
break;
u = pdiff(p, q);
if (u == 5 && !strncasecmp(p, "close", u))
ret = SC_REQ_CLOSE;
u = http_findhdr(hp, u, p);
if (u != 0)
hp->hdf[u] |= HDF_FILTER;
if (!*q)
break;
p = q;
}
return (ret);
}
void diff(const std::valarray<double>& a, const std::valarray<double>& b, std::valarray<double>& c) const
{
#ifdef DEBUG
if (a.size()!=b.size()) ERROR("Vector size mismatch in distance.");
#endif
c.resize(a.size()); pdiff(&a[0], &b[0], &c[0], a.size());
}
unsigned
WS_Reserve(struct ws *ws, unsigned bytes)
{
unsigned b2;
WS_Assert(ws);
assert(ws->r == NULL);
b2 = PRNDDN(ws->e - ws->f);
if (bytes != 0 && bytes < b2)
b2 = PRNDUP(bytes);
xxxassert(ws->f + b2 <= ws->e);
ws->r = ws->f + b2;
DSL(DBG_WORKSPACE, 0, "WS_Reserve(%p, %u/%u) = %u",
ws, b2, bytes, pdiff(ws->f, ws->r));
WS_Assert(ws);
return (pdiff(ws->f, ws->r));
}
unsigned
WS_Reserve(struct ws *ws, unsigned bytes)
{
unsigned b2;
WS_Assert(ws);
assert(ws->r == NULL);
if (bytes == 0)
b2 = ws->e - ws->f;
else if (bytes > ws->e - ws->f)
b2 = ws->e - ws->f;
else
b2 = bytes;
b2 = PRNDDN(b2);
xxxassert(ws->f + b2 <= ws->e);
ws->r = ws->f + b2;
DSL(0x02, SLT_Debug, 0, "WS_Reserve(%p, %u/%u) = %u",
ws, b2, bytes, pdiff(ws->f, ws->r));
WS_Assert(ws);
return (pdiff(ws->f, ws->r));
}
VCL_INT
vmod_workspace_free(VRT_CTX, VCL_ENUM which)
{
struct ws *ws;
CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
ws = wsfind(ctx, which);
WS_Assert(ws);
AZ(ws->r);
return pdiff(ws->f, ws->e);
}
void
WS_Assert(const struct ws *ws)
{
CHECK_OBJ_NOTNULL(ws, WS_MAGIC);
DSL(0x02, SLT_Debug, 0, "WS(%p = (%s, %p %u %u %u)",
ws, ws->id, ws->s, pdiff(ws->s, ws->f),
ws->r == NULL ? 0 : pdiff(ws->f, ws->r),
pdiff(ws->s, ws->e));
assert(ws->s != NULL);
assert(PAOK(ws->s));
assert(ws->e != NULL);
assert(PAOK(ws->e));
assert(ws->s < ws->e);
assert(ws->f >= ws->s);
assert(ws->f <= ws->e);
assert(PAOK(ws->f));
if (ws->r) {
assert(ws->r > ws->s);
assert(ws->r <= ws->e);
assert(PAOK(ws->r));
}
}
void
WS_Assert(const struct ws *ws)
{
CHECK_OBJ_NOTNULL(ws, WS_MAGIC);
DSL(DBG_WORKSPACE, 0, "WS(%p = (%s, %p %u %u %u)",
ws, ws->id, ws->s, pdiff(ws->s, ws->f),
ws->r == NULL ? 0 : pdiff(ws->f, ws->r),
pdiff(ws->s, ws->e));
assert(ws->s != NULL);
assert(PAOK(ws->s));
assert(ws->e != NULL);
assert(PAOK(ws->e));
assert(ws->s < ws->e);
assert(ws->f >= ws->s);
assert(ws->f <= ws->e);
assert(PAOK(ws->f));
if (ws->r) {
assert(ws->r > ws->s);
assert(ws->r <= ws->e);
assert(PAOK(ws->r));
}
assert(*ws->e == 0x15);
}
void
VSL_Flush(struct vsl_log *vsl, int overflow)
{
uint32_t *p;
unsigned l;
l = pdiff(vsl->wlb, vsl->wlp);
if (l == 0)
return;
assert(l >= 8);
p = vsl_get(l - 8, vsl->wlr, overflow);
memcpy(p + 1, vsl->wlb + 1, l - 4);
VWMB();
p[0] = vsl->wlb[0];
vsl->wlp = vsl->wlb;
vsl->wlr = 0;
}
void
WSL_Flush(struct worker *wrk, int overflow)
{
uint32_t *p;
unsigned l;
l = pdiff(wrk->wlb, wrk->wlp);
if (l == 0)
return;
assert(l >= 8);
p = vsl_get(l - 8, wrk->wlr, overflow);
memcpy(p + 1, wrk->wlb + 1, l - 4);
VWMB();
p[0] = wrk->wlb[0];
wrk->wlp = wrk->wlb;
wrk->wlr = 0;
}
static int do_merge(int argc, char *argv[], int obj,
int reverse, int replace, int ignore, int show_wiggles,
int quiet)
{
/* merge three files, A B C, so changed between B and C get made to A
*/
struct stream f, flist[3];
struct file fl[3];
int i;
int chunks1 = 0, chunks2 = 0, chunks3 = 0;
char *replacename = NULL, *orignew = NULL;
struct csl *csl1, *csl2;
struct ci ci;
FILE *outfile = stdout;
switch (argc) {
case 0:
fprintf(stderr, "%s: no files given for --merge\n", Cmd);
return 2;
case 3:
case 2:
case 1:
for (i = 0; i < argc; i++) {
flist[i] = load_file(argv[i]);
if (flist[i].body == NULL) {
fprintf(stderr, "%s: cannot load file '%s' - %s\n",
Cmd,
argv[i], strerror(errno));
return 2;
}
}
break;
default:
fprintf(stderr, "%s: too many files given for --merge\n",
Cmd);
return 2;
}
switch (argc) {
case 1: /* a merge file */
f = flist[0];
if (!split_merge(f, &flist[0], &flist[1], &flist[2])) {
fprintf(stderr, "%s: merge file %s looks bad.\n",
Cmd,
argv[0]);
return 2;
}
break;
case 2: /* a file and a patch */
f = flist[1];
chunks2 = chunks3 = split_patch(f, &flist[1], &flist[2]);
break;
case 3: /* three separate files */
break;
}
if (reverse) {
f = flist[1];
flist[1] = flist[2];
flist[2] = f;
}
for (i = 0; i < 3; i++) {
if (flist[i].body == NULL) {
fprintf(stderr, "%s: file %d missing\n", Cmd, i);
return 2;
}
}
if (replace) {
int fd;
replacename = xmalloc(strlen(argv[0]) + 20);
orignew = xmalloc(strlen(argv[0]) + 20);
strcpy(replacename, argv[0]);
strcpy(orignew, argv[0]);
strcat(orignew, ".porig");
if (open(orignew, O_RDONLY) >= 0 ||
errno != ENOENT) {
fprintf(stderr, "%s: %s already exists\n",
Cmd,
orignew);
return 2;
}
strcat(replacename, "XXXXXX");
fd = mkstemp(replacename);
if (fd == -1) {
fprintf(stderr,
"%s: could not create temporary file for %s\n",
Cmd,
replacename);
return 2;
}
outfile = fdopen(fd, "w");
}
if (obj == 'l') {
fl[0] = split_stream(flist[0], ByLine);
fl[1] = split_stream(flist[1], ByLine);
fl[2] = split_stream(flist[2], ByLine);
} else {
fl[0] = split_stream(flist[0], ByWord);
fl[1] = split_stream(flist[1], ByWord);
fl[2] = split_stream(flist[2], ByWord);
}
if (chunks2 && !chunks1)
csl1 = pdiff(fl[0], fl[1], chunks2);
else
csl1 = diff(fl[0], fl[1]);
csl2 = diff_patch(fl[1], fl[2]);
ci = make_merger(fl[0], fl[1], fl[2], csl1, csl2,
obj == 'w', ignore, show_wiggles);
print_merge(outfile, &fl[0], &fl[1], &fl[2],
obj == 'w', ci.merger);
if (!quiet && ci.conflicts)
fprintf(stderr,
"%d unresolved conflict%s found\n",
ci.conflicts,
ci.conflicts == 1 ? "" : "s");
if (!quiet && ci.ignored)
fprintf(stderr,
"%d already-applied change%s ignored\n",
ci.ignored,
ci.ignored == 1 ? "" : "s");
if (replace) {
fclose(outfile);
if (rename(argv[0], orignew) == 0 &&
rename(replacename, argv[0]) == 0)
/* all ok */;
else {
fprintf(stderr,
"%s: failed to move new file into place.\n",
Cmd);
return 2;
}
}
return (ci.conflicts > 0);
}
static int do_diff(int argc, char *argv[], int obj, int ispatch,
int which, int reverse)
{
/* create a diff (line or char) of two streams */
struct stream f, flist[3];
int chunks1 = 0, chunks2 = 0, chunks3 = 0;
int exit_status = 0;
struct file fl[2];
struct csl *csl;
switch (argc) {
case 0:
fprintf(stderr, "%s: no file given for --diff\n", Cmd);
return 2;
case 1:
f = load_file(argv[0]);
if (f.body == NULL) {
fprintf(stderr,
"%s: cannot load file '%s' - %s\n", Cmd,
argv[0], strerror(errno));
return 2;
}
chunks1 = chunks2 =
split_patch(f, &flist[0], &flist[1]);
if (!flist[0].body || !flist[1].body) {
fprintf(stderr,
"%s: couldn't parse patch %s\n", Cmd,
argv[0]);
return 2;
}
break;
case 2:
flist[0] = load_file(argv[0]);
if (flist[0].body == NULL) {
fprintf(stderr,
"%s: cannot load file '%s' - %s\n", Cmd,
argv[0], strerror(errno));
return 2;
}
if (ispatch) {
f = load_file(argv[1]);
if (f.body == NULL) {
fprintf(stderr,
"%s: cannot load patch"
" '%s' - %s\n", Cmd,
argv[1], strerror(errno));
return 2;
}
if (which == '2')
chunks2 = chunks3 =
split_patch(f, &flist[2],
&flist[1]);
else
chunks2 = chunks3 =
split_patch(f, &flist[1],
&flist[2]);
} else
flist[1] = load_file(argv[1]);
if (flist[1].body == NULL) {
fprintf(stderr,
"%s: cannot load file"
" '%s' - %s\n", Cmd,
argv[1], strerror(errno));
return 2;
}
break;
default:
fprintf(stderr,
"%s: too many files given for --diff\n", Cmd);
return 2;
}
if (reverse) {
f = flist[1];
flist[1] = flist[2];
flist[2] = f;
}
fl[0] = split_stream(flist[0], obj == 'l' ? ByLine : ByWord);
fl[1] = split_stream(flist[1], obj == 'l' ? ByLine : ByWord);
if (chunks2 && !chunks1)
csl = pdiff(fl[0], fl[1], chunks2);
else
csl = diff_patch(fl[0], fl[1]);
if (obj == 'l') {
if (!chunks1)
printf("@@ -1,%d +1,%d @@\n",
fl[0].elcnt, fl[1].elcnt);
exit_status = do_diff_lines(fl, csl);
} else {
if (!chunks1) {
/* count lines in each file */
int l1, l2, i;
l1 = l2 = 0;
for (i = 0 ; i < fl[0].elcnt ; i++)
if (ends_line(fl[0].list[i]))
l1++;
for (i = 0 ; i < fl[1].elcnt ; i++)
if (ends_line(fl[1].list[i]))
l2++;
printf("@@ -1,%d +1,%d @@\n", l1, l2);
}
exit_status = do_diff_words(fl, csl);
}
return exit_status;
}
BackupStoreRefCountDatabase::refcount_t HousekeepStoreAccount::DeleteFile(
int64_t InDirectory, int64_t ObjectID, BackupStoreDirectory &rDirectory,
const std::string &rDirectoryFilename,
BackupStoreInfo& rBackupStoreInfo)
{
// Find the entry inside the directory
bool wasDeleted = false;
bool wasOldVersion = false;
int64_t deletedFileSizeInBlocks = 0;
// A pointer to an object which requires committing if the directory save goes OK
std::auto_ptr<RaidFileWrite> padjustedEntry;
// BLOCK
{
BackupStoreRefCountDatabase::refcount_t refs =
mapNewRefs->GetRefCount(ObjectID);
BackupStoreDirectory::Entry *pentry = rDirectory.FindEntryByID(ObjectID);
if(pentry == 0)
{
BOX_ERROR("Housekeeping on account " <<
BOX_FORMAT_ACCOUNT(mAccountID) << " "
"found error: object " <<
BOX_FORMAT_OBJECTID(ObjectID) << " "
"not found in dir " <<
BOX_FORMAT_OBJECTID(InDirectory) << ", "
"indicates logic error/corruption? Run "
"bbstoreaccounts check <accid> fix");
mErrorCount++;
return refs;
}
// Record the flags it's got set
wasDeleted = pentry->IsDeleted();
wasOldVersion = pentry->IsOld();
// Check this should be deleted
if(!wasDeleted && !wasOldVersion)
{
// Things changed since we were last around
return refs;
}
// Record size
deletedFileSizeInBlocks = pentry->GetSizeInBlocks();
if(refs > 1)
{
// Not safe to merge patches if someone else has a
// reference to this object, so just remove the
// directory entry and return.
rDirectory.DeleteEntry(ObjectID);
if(wasDeleted)
{
rBackupStoreInfo.AdjustNumDeletedFiles(-1);
}
if(wasOldVersion)
{
rBackupStoreInfo.AdjustNumOldFiles(-1);
}
mapNewRefs->RemoveReference(ObjectID);
return refs - 1;
}
// If the entry is involved in a chain of patches, it needs to be handled
// a bit more carefully.
if(pentry->GetDependsNewer() != 0 && pentry->GetDependsOlder() == 0)
{
// This entry is a patch from a newer entry. Just need to update the info on that entry.
BackupStoreDirectory::Entry *pnewer = rDirectory.FindEntryByID(pentry->GetDependsNewer());
if(pnewer == 0 || pnewer->GetDependsOlder() != ObjectID)
{
THROW_EXCEPTION(BackupStoreException, PatchChainInfoBadInDirectory);
}
// Change the info in the newer entry so that this no longer points to this entry
pnewer->SetDependsOlder(0);
}
else if(pentry->GetDependsOlder() != 0)
{
BackupStoreDirectory::Entry *polder = rDirectory.FindEntryByID(pentry->GetDependsOlder());
if(pentry->GetDependsNewer() == 0)
{
// There exists an older version which depends on this one. Need to combine the two over that one.
// Adjust the other entry in the directory
if(polder == 0 || polder->GetDependsNewer() != ObjectID)
{
THROW_EXCEPTION(BackupStoreException, PatchChainInfoBadInDirectory);
}
// Change the info in the older entry so that this no longer points to this entry
polder->SetDependsNewer(0);
}
else
{
// This entry is in the middle of a chain, and two patches need combining.
// First, adjust the directory entries
BackupStoreDirectory::Entry *pnewer = rDirectory.FindEntryByID(pentry->GetDependsNewer());
if(pnewer == 0 || pnewer->GetDependsOlder() != ObjectID
|| polder == 0 || polder->GetDependsNewer() != ObjectID)
{
THROW_EXCEPTION(BackupStoreException, PatchChainInfoBadInDirectory);
}
// Remove the middle entry from the linked list by simply using the values from this entry
pnewer->SetDependsOlder(pentry->GetDependsOlder());
polder->SetDependsNewer(pentry->GetDependsNewer());
}
// COMMON CODE to both cases
// Generate the filename of the older version
std::string objFilenameOlder;
MakeObjectFilename(pentry->GetDependsOlder(), objFilenameOlder);
// Open it twice (it's the diff)
std::auto_ptr<RaidFileRead> pdiff(RaidFileRead::Open(mStoreDiscSet, objFilenameOlder));
std::auto_ptr<RaidFileRead> pdiff2(RaidFileRead::Open(mStoreDiscSet, objFilenameOlder));
// Open this file
std::string objFilename;
MakeObjectFilename(ObjectID, objFilename);
std::auto_ptr<RaidFileRead> pobjectBeingDeleted(RaidFileRead::Open(mStoreDiscSet, objFilename));
// And open a write file to overwrite the other directory entry
padjustedEntry.reset(new RaidFileWrite(mStoreDiscSet,
objFilenameOlder, mapNewRefs->GetRefCount(ObjectID)));
padjustedEntry->Open(true /* allow overwriting */);
if(pentry->GetDependsNewer() == 0)
{
// There exists an older version which depends on this one. Need to combine the two over that one.
BackupStoreFile::CombineFile(*pdiff, *pdiff2, *pobjectBeingDeleted, *padjustedEntry);
}
else
{
// This entry is in the middle of a chain, and two patches need combining.
BackupStoreFile::CombineDiffs(*pobjectBeingDeleted, *pdiff, *pdiff2, *padjustedEntry);
}
// The file will be committed later when the directory is safely commited.
// Work out the adjusted size
int64_t newSize = padjustedEntry->GetDiscUsageInBlocks();
int64_t sizeDelta = newSize - polder->GetSizeInBlocks();
mBlocksUsedDelta += sizeDelta;
if(polder->IsDeleted())
{
mBlocksInDeletedFilesDelta += sizeDelta;
}
if(polder->IsOld())
{
mBlocksInOldFilesDelta += sizeDelta;
}
polder->SetSizeInBlocks(newSize);
}
// pentry no longer valid
}
// Delete it from the directory
rDirectory.DeleteEntry(ObjectID);
// Save directory back to disc
// BLOCK
{
RaidFileWrite writeDir(mStoreDiscSet, rDirectoryFilename,
mapNewRefs->GetRefCount(InDirectory));
writeDir.Open(true /* allow overwriting */);
rDirectory.WriteToStream(writeDir);
// Get the disc usage (must do this before commiting it)
int64_t new_size = writeDir.GetDiscUsageInBlocks();
// Commit directory
writeDir.Commit(BACKUP_STORE_CONVERT_TO_RAID_IMMEDIATELY);
// Adjust block counts if the directory itself changed in size
int64_t original_size = rDirectory.GetUserInfo1_SizeInBlocks();
int64_t adjust = new_size - original_size;
mBlocksUsedDelta += adjust;
mBlocksInDirectoriesDelta += adjust;
UpdateDirectorySize(rDirectory, new_size);
}
// Commit any new adjusted entry
if(padjustedEntry.get() != 0)
{
padjustedEntry->Commit(BACKUP_STORE_CONVERT_TO_RAID_IMMEDIATELY);
padjustedEntry.reset(); // delete it now
}
// Drop reference count by one. Must now be zero, to delete the file.
bool remaining_refs = mapNewRefs->RemoveReference(ObjectID);
ASSERT(!remaining_refs);
// Delete from disc
BOX_TRACE("Removing unreferenced object " <<
BOX_FORMAT_OBJECTID(ObjectID));
std::string objFilename;
MakeObjectFilename(ObjectID, objFilename);
RaidFileWrite del(mStoreDiscSet, objFilename, mapNewRefs->GetRefCount(ObjectID));
del.Delete();
// Adjust counts for the file
++mFilesDeleted;
mBlocksUsedDelta -= deletedFileSizeInBlocks;
if(wasDeleted)
{
mBlocksInDeletedFilesDelta -= deletedFileSizeInBlocks;
rBackupStoreInfo.AdjustNumDeletedFiles(-1);
}
if(wasOldVersion)
{
mBlocksInOldFilesDelta -= deletedFileSizeInBlocks;
rBackupStoreInfo.AdjustNumOldFiles(-1);
}
// Delete the directory?
// Do this if... dir has zero entries, and is marked as deleted in it's containing directory
if(rDirectory.GetNumberOfEntries() == 0)
{
// Candidate for deletion
mEmptyDirectories.push_back(InDirectory);
}
return 0;
}
