1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
#include "libstore/derivations.hh"
#include "libstore/fs-accessor.hh"
#include "libstore/globals.hh"
#include "libstore/store-api.hh"
#include "libutil/archive.hh"
#include "libutil/compression.hh"
namespace nix {
LocalFSStore::LocalFSStore(const Params& params) : Store(params) {}
struct LocalStoreAccessor : public FSAccessor {
ref<LocalFSStore> store;
explicit LocalStoreAccessor(const ref<LocalFSStore>& store) : store(store) {}
Path toRealPath(const Path& path) {
Path storePath = store->toStorePath(path);
if (!store->isValidPath(storePath)) {
throw InvalidPath(format("path '%1%' is not a valid store path") %
storePath);
}
return store->getRealStoreDir() + std::string(path, store->storeDir.size());
}
FSAccessor::Stat stat(const Path& path) override {
auto realPath = toRealPath(path);
struct stat st {};
if (lstat(realPath.c_str(), &st) != 0) {
if (errno == ENOENT || errno == ENOTDIR) {
return {Type::tMissing, 0, false};
}
throw SysError(format("getting status of '%1%'") % path);
}
if (!S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode)) {
throw Error(format("file '%1%' has unsupported type") % path);
}
return {S_ISREG(st.st_mode)
? Type::tRegular
: S_ISLNK(st.st_mode) ? Type::tSymlink : Type::tDirectory,
S_ISREG(st.st_mode) ? static_cast<uint64_t>(st.st_size) : 0,
S_ISREG(st.st_mode) && ((st.st_mode & S_IXUSR) != 0u)};
}
StringSet readDirectory(const Path& path) override {
auto realPath = toRealPath(path);
auto entries = nix::readDirectory(realPath);
StringSet res;
for (auto& entry : entries) {
res.insert(entry.name);
}
return res;
}
std::string readFile(const Path& path) override {
return nix::readFile(toRealPath(path));
}
std::string readLink(const Path& path) override {
return nix::readLink(toRealPath(path));
}
};
ref<FSAccessor> LocalFSStore::getFSAccessor() {
return make_ref<LocalStoreAccessor>(ref<LocalFSStore>(
std::dynamic_pointer_cast<LocalFSStore>(shared_from_this())));
}
void LocalFSStore::narFromPath(const Path& path, Sink& sink) {
if (!isValidPath(path)) {
throw Error(format("path '%s' is not valid") % path);
}
dumpPath(getRealStoreDir() + std::string(path, storeDir.size()), sink);
}
const std::string LocalFSStore::drvsLogDir = "drvs";
std::shared_ptr<std::string> LocalFSStore::getBuildLog(const Path& path_) {
auto path(path_);
assertStorePath(path);
if (!isDerivation(path)) {
try {
path = queryPathInfo(path)->deriver;
} catch (InvalidPath&) {
return nullptr;
}
if (path.empty()) {
return nullptr;
}
}
std::string baseName = baseNameOf(path);
for (int j = 0; j < 2; j++) {
Path logPath =
j == 0 ? fmt("%s/%s/%s/%s", logDir, drvsLogDir,
std::string(baseName, 0, 2), std::string(baseName, 2))
: fmt("%s/%s/%s", logDir, drvsLogDir, baseName);
Path logBz2Path = logPath + ".bz2";
if (pathExists(logPath)) {
return std::make_shared<std::string>(readFile(logPath));
}
if (pathExists(logBz2Path)) {
try {
return decompress("bzip2", readFile(logBz2Path));
} catch (Error&) {
}
}
}
return nullptr;
}
} // namespace nix
|
