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/** |
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* This file is part of the CernVM File System. |
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*/ |
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#include "publish/repository.h" |
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| 8 |
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#include <cstdio> |
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| 10 |
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#include "crypto/hash.h" |
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#include "manifest.h" |
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#include "publish/except.h" |
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#include "publish/repository_util.h" |
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#include "upload.h" |
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#include "upload_spooler_definition.h" |
| 16 |
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#include "util/pointer.h" |
| 17 |
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#include "util/posix.h" |
| 18 |
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#include "util/string.h" |
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| 21 |
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namespace publish { |
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✗ |
void Publisher::ManagedNode::Open() { |
| 24 |
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✗ |
AlterMountpoint(kAlterUnionOpen, kLogSyslog); |
| 25 |
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} |
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| 28 |
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✗ |
void Publisher::ManagedNode::Lock() { |
| 29 |
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AlterMountpoint(kAlterUnionLock, kLogSyslog); |
| 30 |
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} |
| 31 |
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| 32 |
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| 33 |
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✗ |
void Publisher::ManagedNode::Unmount() { |
| 34 |
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try { |
| 35 |
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✗ |
AlterMountpoint(kAlterUnionUnmount, kLogSyslog); |
| 36 |
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✗ |
} catch (const EPublish &e) { |
| 37 |
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✗ |
AlterMountpoint(kAlterUnionLazyUnmount, kLogSyslog); |
| 38 |
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✗ |
AlterMountpoint(kAlterRdOnlyKillUnmount, kLogSyslog); |
| 39 |
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✗ |
AlterMountpoint(kAlterRdOnlyLazyUnmount, kLogSyslog); |
| 40 |
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✗ |
return; |
| 41 |
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} |
| 42 |
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| 43 |
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try { |
| 44 |
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✗ |
AlterMountpoint(kAlterRdOnlyUnmount, kLogSyslog); |
| 45 |
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✗ |
} catch (const EPublish &e) { |
| 46 |
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✗ |
AlterMountpoint(kAlterRdOnlyKillUnmount, kLogSyslog); |
| 47 |
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AlterMountpoint(kAlterRdOnlyLazyUnmount, kLogSyslog); |
| 48 |
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} |
| 49 |
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} |
| 50 |
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| 51 |
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✗ |
void Publisher::ManagedNode::Mount() { |
| 52 |
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AlterMountpoint(kAlterRdOnlyMount, kLogSyslog); |
| 53 |
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AlterMountpoint(kAlterUnionMount, kLogSyslog); |
| 54 |
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} |
| 55 |
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| 56 |
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✗ |
void Publisher::ManagedNode::ClearScratch() { |
| 57 |
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const std::string scratch_dir = |
| 58 |
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✗ |
publisher_->settings_.transaction().spool_area().scratch_dir(); |
| 59 |
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const std::string scratch_wastebin = |
| 60 |
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publisher_->settings_.transaction().spool_area().scratch_wastebin(); |
| 61 |
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const std::string tmp_dir = |
| 62 |
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✗ |
publisher_->settings_.transaction().spool_area().tmp_dir(); |
| 63 |
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| 64 |
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std::string waste_dir = CreateTempDir(scratch_wastebin + "/waste"); |
| 65 |
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if (waste_dir.empty()) throw EPublish("cannot create wastebin directory"); |
| 66 |
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✗ |
int rvi = rename(scratch_dir.c_str(), (waste_dir + "/delete-me").c_str()); |
| 67 |
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if (rvi != 0) throw EPublish("cannot move scratch directory to wastebin"); |
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| 69 |
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publisher_->CreateDirectoryAsOwner(scratch_dir, kDefaultDirMode); |
| 70 |
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| 71 |
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✗ |
AlterMountpoint(kAlterScratchWipe, kLogSyslog); |
| 72 |
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| 73 |
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std::vector<mode_t> modes; |
| 74 |
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std::vector<std::string> names; |
| 75 |
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✗ |
ListDirectory(tmp_dir, &names, &modes); |
| 76 |
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✗ |
for (unsigned i = 0; i < names.size(); ++i) { |
| 77 |
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if (HasPrefix(names[i], "receiver.", false /* ignore_case */)) |
| 78 |
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✗ |
continue; |
| 79 |
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| 80 |
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✗ |
unlink((tmp_dir + "/" + names[i]).c_str()); |
| 81 |
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} |
| 82 |
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} |
| 83 |
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| 84 |
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| 85 |
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✗ |
int Publisher::ManagedNode::Check(bool is_quiet) { |
| 86 |
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✗ |
ServerLockFileCheck publish_check(publisher_->is_publishing_); |
| 87 |
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const std::string rdonly_mnt = |
| 88 |
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✗ |
publisher_->settings_.transaction().spool_area().readonly_mnt(); |
| 89 |
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const std::string union_mnt = |
| 90 |
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✗ |
publisher_->settings_.transaction().spool_area().union_mnt(); |
| 91 |
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✗ |
const std::string fqrn = publisher_->settings_.fqrn(); |
| 92 |
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EUnionMountRepairMode repair_mode = |
| 93 |
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✗ |
publisher_->settings_.transaction().spool_area().repair_mode(); |
| 94 |
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| 95 |
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✗ |
int result = kFailOk; |
| 96 |
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| 97 |
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✗ |
shash::Any expected_hash = publisher_->manifest()->catalog_hash(); |
| 98 |
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UniquePtr<CheckoutMarker> marker(CheckoutMarker::CreateFrom( |
| 99 |
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✗ |
publisher_->settings_.transaction().spool_area().checkout_marker())); |
| 100 |
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✗ |
if (marker.IsValid()) |
| 101 |
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✗ |
expected_hash = marker->hash(); |
| 102 |
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| 103 |
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✗ |
if (!IsMountPoint(rdonly_mnt)) { |
| 104 |
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✗ |
result |= kFailRdOnlyBroken; |
| 105 |
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} else { |
| 106 |
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✗ |
const std::string root_hash_xattr = "user.root_hash"; |
| 107 |
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✗ |
std::string root_hash_str; |
| 108 |
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✗ |
bool retval = platform_getxattr(rdonly_mnt, root_hash_xattr, |
| 109 |
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&root_hash_str); |
| 110 |
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✗ |
if (retval) { |
| 111 |
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✗ |
shash::Any root_hash = shash::MkFromHexPtr(shash::HexPtr(root_hash_str), |
| 112 |
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shash::kSuffixCatalog); |
| 113 |
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✗ |
if (expected_hash != root_hash) { |
| 114 |
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✗ |
if (marker.IsValid()) { |
| 115 |
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✗ |
result |= kFailRdOnlyWrongRevision; |
| 116 |
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} else { |
| 117 |
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✗ |
result |= kFailRdOnlyOutdated; |
| 118 |
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} |
| 119 |
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} |
| 120 |
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} else { |
| 121 |
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✗ |
if (errno == ENOTCONN) { |
| 122 |
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// Fuse module crashed |
| 123 |
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✗ |
result |= kFailRdOnlyBroken; |
| 124 |
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} else { |
| 125 |
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✗ |
throw EPublish("cannot retrieve root hash from read-only mount point"); |
| 126 |
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} |
| 127 |
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} |
| 128 |
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} |
| 129 |
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| 130 |
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// The process that opens the transaction does not stay alive for the life |
| 131 |
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// time of the transaction |
| 132 |
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✗ |
if (!IsMountPoint(union_mnt)) { |
| 133 |
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✗ |
result |= kFailUnionBroken; |
| 134 |
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} else { |
| 135 |
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✗ |
FileSystemInfo fs_info = GetFileSystemInfo(union_mnt); |
| 136 |
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✗ |
if (publisher_->in_transaction_.IsSet() && fs_info.is_rdonly) |
| 137 |
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✗ |
result |= kFailUnionLocked; |
| 138 |
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✗ |
if (!publisher_->in_transaction_.IsSet() && !fs_info.is_rdonly) |
| 139 |
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✗ |
result |= kFailUnionWritable; |
| 140 |
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} |
| 141 |
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| 142 |
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✗ |
if (result == kFailOk) |
| 143 |
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✗ |
return result; |
| 144 |
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| 145 |
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// Report & Repair |
| 146 |
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| 147 |
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✗ |
int logFlags = kLogStderr; |
| 148 |
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✗ |
if (is_quiet) |
| 149 |
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✗ |
logFlags |= kLogNone; |
| 150 |
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✗ |
if (result & kFailRdOnlyBroken) { |
| 151 |
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✗ |
LogCvmfs(kLogCvmfs, logFlags, "%s is not mounted properly", |
| 152 |
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rdonly_mnt.c_str()); |
| 153 |
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} |
| 154 |
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✗ |
if (result & kFailRdOnlyOutdated) { |
| 155 |
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✗ |
LogCvmfs(kLogCvmfs, logFlags, |
| 156 |
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"%s is not based on the newest published revision", fqrn.c_str()); |
| 157 |
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} |
| 158 |
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✗ |
if (result & kFailRdOnlyWrongRevision) { |
| 159 |
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✗ |
LogCvmfs(kLogCvmfs, logFlags, |
| 160 |
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"%s is not based on the checked out revision", fqrn.c_str()); |
| 161 |
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} |
| 162 |
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✗ |
if (result & kFailUnionBroken) { |
| 163 |
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✗ |
LogCvmfs(kLogCvmfs, logFlags, "%s is not mounted properly", |
| 164 |
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union_mnt.c_str()); |
| 165 |
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} |
| 166 |
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✗ |
if (result & kFailUnionWritable) { |
| 167 |
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✗ |
LogCvmfs(kLogCvmfs, logFlags, |
| 168 |
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"%s is not in a transaction but %s is mounted read/write", |
| 169 |
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fqrn.c_str(), union_mnt.c_str()); |
| 170 |
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} |
| 171 |
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✗ |
if (result & kFailUnionLocked) { |
| 172 |
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✗ |
LogCvmfs(kLogCvmfs, logFlags, |
| 173 |
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"%s is in a transaction but %s is not mounted read/write", |
| 174 |
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fqrn.c_str(), union_mnt.c_str()); |
| 175 |
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} |
| 176 |
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| 177 |
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// Check whether we can repair |
| 178 |
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| 179 |
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✗ |
switch (repair_mode) { |
| 180 |
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✗ |
case kUnionMountRepairNever: |
| 181 |
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✗ |
return result; |
| 182 |
|
✗ |
case kUnionMountRepairAlways: |
| 183 |
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✗ |
break; |
| 184 |
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✗ |
case kUnionMountRepairSafe: |
| 185 |
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✗ |
if (!publish_check.owns_lock()) { |
| 186 |
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✗ |
LogCvmfs(kLogCvmfs, logFlags, |
| 187 |
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"WARNING: The repository %s is currently publishing and should not\n" |
| 188 |
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"be touched. If you are absolutely sure, that this is _not_ the " |
| 189 |
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"case,\nplease run the following command and retry:\n\n" |
| 190 |
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" rm -fR %s\n", |
| 191 |
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✗ |
fqrn.c_str(), publisher_->is_publishing_.path().c_str()); |
| 192 |
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✗ |
return result; |
| 193 |
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} |
| 194 |
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| 195 |
|
✗ |
if (publisher_->in_transaction_.IsSet()) { |
| 196 |
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✗ |
LogCvmfs(kLogCvmfs, logFlags, |
| 197 |
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"Repository %s is in a transaction and cannot be repaired.\n" |
| 198 |
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"--> Run `cvmfs_server abort $name` to revert and repair.", |
| 199 |
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fqrn.c_str()); |
| 200 |
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✗ |
return result; |
| 201 |
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} |
| 202 |
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|
| 203 |
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✗ |
break; |
| 204 |
|
✗ |
default: |
| 205 |
|
✗ |
abort(); |
| 206 |
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} |
| 207 |
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|
| 208 |
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✗ |
LogCvmfs(kLogCvmfs, kLogSyslog, "(%s) attempting mountpoint repair (%d)", |
| 209 |
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fqrn.c_str(), result); |
| 210 |
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|
| 211 |
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// consecutively bring the mountpoints into a sane state by working bottom up: |
| 212 |
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// 1. solve problems with the rdonly mountpoint |
| 213 |
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// Note: this might require to 'break' the union mount |
| 214 |
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// (kFailUnionBroken -> 1) |
| 215 |
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// 1.1. solve outdated rdonly mountpoint (kFailRdOnlyOutdated -> 0) |
| 216 |
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// 1.2. remount rdonly mountpoint (kFailRdOnlyBroken -> 0) |
| 217 |
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// 2. solve problems with the union mountpoint |
| 218 |
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// 2.1. mount the union mountpoint read-only (kFailUnionBroken -> 0) |
| 219 |
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// 2.2. remount the union mountpoint read-only (kFailUnionWritable -> 0) |
| 220 |
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// 2.2. remount the union mountpoint read-write (kFailUnionLocked -> 0) |
| 221 |
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| 222 |
|
✗ |
int log_flags = kLogSyslog; |
| 223 |
|
✗ |
if (!is_quiet) |
| 224 |
|
✗ |
log_flags |= kLogStderr; |
| 225 |
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| 226 |
|
✗ |
if ((result & kFailRdOnlyOutdated) || (result & kFailRdOnlyWrongRevision)) { |
| 227 |
|
✗ |
if ((result & kFailUnionBroken) == 0) { |
| 228 |
|
✗ |
AlterMountpoint(kAlterUnionUnmount, log_flags); |
| 229 |
|
✗ |
result |= kFailUnionBroken; |
| 230 |
|
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} |
| 231 |
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|
| 232 |
|
✗ |
if ((result & kFailRdOnlyBroken) == 0) { |
| 233 |
|
✗ |
AlterMountpoint(kAlterRdOnlyUnmount, log_flags); |
| 234 |
|
✗ |
result |= kFailRdOnlyBroken; |
| 235 |
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} |
| 236 |
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|
| 237 |
|
✗ |
SetRootHash(expected_hash); |
| 238 |
|
✗ |
result &= ~kFailRdOnlyOutdated; |
| 239 |
|
✗ |
result &= ~kFailRdOnlyWrongRevision; |
| 240 |
|
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} |
| 241 |
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|
| 242 |
|
✗ |
if (result & kFailRdOnlyBroken) { |
| 243 |
|
✗ |
if ((result & kFailUnionBroken) == 0) { |
| 244 |
|
✗ |
AlterMountpoint(kAlterUnionUnmount, log_flags); |
| 245 |
|
✗ |
result |= kFailUnionBroken; |
| 246 |
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} |
| 247 |
|
✗ |
AlterMountpoint(kAlterRdOnlyMount, log_flags); |
| 248 |
|
✗ |
result &= ~kFailRdOnlyBroken; |
| 249 |
|
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} |
| 250 |
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|
| 251 |
|
✗ |
if (result & kFailUnionBroken) { |
| 252 |
|
✗ |
AlterMountpoint(kAlterUnionMount, log_flags); |
| 253 |
|
|
// read-only mount by default |
| 254 |
|
✗ |
if (publisher_->in_transaction_.IsSet()) |
| 255 |
|
✗ |
result |= kFailUnionLocked; |
| 256 |
|
|
|
| 257 |
|
✗ |
result &= ~kFailUnionBroken; |
| 258 |
|
✗ |
result &= ~kFailUnionWritable; |
| 259 |
|
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} |
| 260 |
|
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|
| 261 |
|
✗ |
if (result & kFailUnionLocked) { |
| 262 |
|
✗ |
AlterMountpoint(kAlterUnionOpen, log_flags); |
| 263 |
|
✗ |
result &= ~kFailUnionLocked; |
| 264 |
|
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} |
| 265 |
|
|
|
| 266 |
|
✗ |
if (result & kFailUnionWritable) { |
| 267 |
|
✗ |
AlterMountpoint(kAlterUnionLock, log_flags); |
| 268 |
|
✗ |
result &= ~kFailUnionWritable; |
| 269 |
|
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} |
| 270 |
|
|
|
| 271 |
|
✗ |
LogCvmfs(kLogCvmfs, kLogSyslog, "finished mountpoint repair (%d)", result); |
| 272 |
|
|
|
| 273 |
|
✗ |
return result; |
| 274 |
|
|
} |
| 275 |
|
|
|
| 276 |
|
✗ |
void Publisher::ManagedNode::AlterMountpoint( |
| 277 |
|
|
EMountpointAlterations how, int log_level) |
| 278 |
|
|
{ |
| 279 |
|
✗ |
std::string mountpoint; |
| 280 |
|
✗ |
std::string info_msg; |
| 281 |
|
✗ |
std::string suid_helper_verb; |
| 282 |
|
✗ |
switch (how) { |
| 283 |
|
✗ |
case kAlterUnionUnmount: |
| 284 |
|
✗ |
mountpoint = publisher_->settings_.transaction().spool_area().union_mnt(); |
| 285 |
|
✗ |
info_msg = "Trying to unmount " + mountpoint; |
| 286 |
|
✗ |
suid_helper_verb = "rw_umount"; |
| 287 |
|
✗ |
break; |
| 288 |
|
✗ |
case kAlterUnionLazyUnmount: |
| 289 |
|
✗ |
mountpoint = publisher_->settings_.transaction().spool_area().union_mnt(); |
| 290 |
|
✗ |
info_msg = "Trying to lazily unmount " + mountpoint; |
| 291 |
|
✗ |
suid_helper_verb = "rw_lazy_umount"; |
| 292 |
|
✗ |
break; |
| 293 |
|
✗ |
case kAlterRdOnlyUnmount: |
| 294 |
|
|
mountpoint = |
| 295 |
|
✗ |
publisher_->settings_.transaction().spool_area().readonly_mnt(); |
| 296 |
|
✗ |
info_msg = "Trying to unmount " + mountpoint; |
| 297 |
|
✗ |
suid_helper_verb = "rdonly_umount"; |
| 298 |
|
✗ |
break; |
| 299 |
|
✗ |
case kAlterRdOnlyKillUnmount: |
| 300 |
|
|
mountpoint = |
| 301 |
|
✗ |
publisher_->settings_.transaction().spool_area().readonly_mnt(); |
| 302 |
|
✗ |
info_msg = "Trying to forcefully stop " + mountpoint; |
| 303 |
|
✗ |
suid_helper_verb = "kill_cvmfs"; |
| 304 |
|
✗ |
break; |
| 305 |
|
✗ |
case kAlterRdOnlyLazyUnmount: |
| 306 |
|
|
mountpoint = |
| 307 |
|
✗ |
publisher_->settings_.transaction().spool_area().readonly_mnt(); |
| 308 |
|
✗ |
info_msg = "Trying to lazily unmount " + mountpoint; |
| 309 |
|
✗ |
suid_helper_verb = "rdonly_lazy_umount"; |
| 310 |
|
✗ |
break; |
| 311 |
|
✗ |
case kAlterUnionMount: |
| 312 |
|
✗ |
mountpoint = publisher_->settings_.transaction().spool_area().union_mnt(); |
| 313 |
|
✗ |
info_msg = "Trying to mount " + mountpoint; |
| 314 |
|
✗ |
suid_helper_verb = "rw_mount"; |
| 315 |
|
✗ |
break; |
| 316 |
|
✗ |
case kAlterRdOnlyMount: |
| 317 |
|
|
mountpoint = |
| 318 |
|
✗ |
publisher_->settings_.transaction().spool_area().readonly_mnt(); |
| 319 |
|
✗ |
info_msg = "Trying to mount " + mountpoint; |
| 320 |
|
✗ |
suid_helper_verb = "rdonly_mount"; |
| 321 |
|
✗ |
break; |
| 322 |
|
✗ |
case kAlterUnionOpen: |
| 323 |
|
✗ |
mountpoint = publisher_->settings_.transaction().spool_area().union_mnt(); |
| 324 |
|
✗ |
info_msg = "Trying to remount " + mountpoint + " read/write"; |
| 325 |
|
✗ |
suid_helper_verb = "open"; |
| 326 |
|
✗ |
break; |
| 327 |
|
✗ |
case kAlterUnionLock: |
| 328 |
|
|
mountpoint = |
| 329 |
|
✗ |
publisher_->settings_.transaction().spool_area().union_mnt(); |
| 330 |
|
✗ |
info_msg = "Trying to remount " + mountpoint + " read-only"; |
| 331 |
|
✗ |
suid_helper_verb = "lock"; |
| 332 |
|
✗ |
break; |
| 333 |
|
✗ |
case kAlterScratchWipe: |
| 334 |
|
|
mountpoint = |
| 335 |
|
✗ |
publisher_->settings_.transaction().spool_area().scratch_dir(); |
| 336 |
|
✗ |
info_msg = "Trying to wipe out " + mountpoint + " (async cleanup)"; |
| 337 |
|
✗ |
suid_helper_verb = "clear_scratch_async"; |
| 338 |
|
✗ |
break; |
| 339 |
|
✗ |
default: |
| 340 |
|
✗ |
throw EPublish("internal error: unknown mountpoint alteration"); |
| 341 |
|
|
} |
| 342 |
|
|
|
| 343 |
|
✗ |
if (log_level & kLogStdout) { |
| 344 |
|
✗ |
LogCvmfs(kLogCvmfs, kLogStderr | kLogNoLinebreak, "Note: %s... ", |
| 345 |
|
|
info_msg.c_str()); |
| 346 |
|
|
} |
| 347 |
|
|
|
| 348 |
|
|
try { |
| 349 |
|
✗ |
RunSuidHelper(suid_helper_verb, publisher_->settings_.fqrn()); |
| 350 |
|
✗ |
LogCvmfs(kLogCvmfs, (log_level & ~kLogStdout), "%s... success", |
| 351 |
|
|
info_msg.c_str()); |
| 352 |
|
✗ |
if (log_level & kLogStdout) |
| 353 |
|
✗ |
LogCvmfs(kLogCvmfs, kLogStdout, "success"); |
| 354 |
|
✗ |
} catch (const EPublish&) { |
| 355 |
|
✗ |
LogCvmfs(kLogCvmfs, kLogStderr | kLogSyslogErr, "%s... fail", |
| 356 |
|
|
info_msg.c_str()); |
| 357 |
|
✗ |
throw EPublish(info_msg + "... fail"); |
| 358 |
|
|
} |
| 359 |
|
|
} |
| 360 |
|
|
|
| 361 |
|
|
|
| 362 |
|
✗ |
void Publisher::ManagedNode::SetRootHash(const shash::Any &hash) { |
| 363 |
|
|
const std::string config_path = |
| 364 |
|
✗ |
publisher_->settings_.transaction().spool_area().client_lconfig(); |
| 365 |
|
✗ |
SetInConfig(config_path, "CVMFS_ROOT_HASH", hash.ToString()); |
| 366 |
|
|
} |
| 367 |
|
|
|
| 368 |
|
|
} // namespace publish |
| 369 |
|
|
|