style(3p/nix): Reformat project in Google C++ style
Reformatted with:
fd . -e hh -e cc | xargs clang-format -i
This commit is contained in:
Vincent Ambo
parent
65a1aae98c
commit
0f2cf531f7
175 changed files with 32126 additions and 34689 deletions
379
third_party/nix/src/libstore/profiles.cc
vendored
379
third_party/nix/src/libstore/profiles.cc
vendored
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@ -1,259 +1,226 @@
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#include "profiles.hh"
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#include <errno.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "store-api.hh"
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#include "util.hh"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <errno.h>
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#include <stdio.h>
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namespace nix {
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static bool cmpGensByNumber(const Generation & a, const Generation & b)
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{
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return a.number < b.number;
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static bool cmpGensByNumber(const Generation& a, const Generation& b) {
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return a.number < b.number;
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}
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/* Parse a generation name of the format
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`<profilename>-<number>-link'. */
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static int parseName(const string & profileName, const string & name)
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{
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if (string(name, 0, profileName.size() + 1) != profileName + "-") return -1;
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string s = string(name, profileName.size() + 1);
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string::size_type p = s.find("-link");
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if (p == string::npos) return -1;
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static int parseName(const string& profileName, const string& name) {
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if (string(name, 0, profileName.size() + 1) != profileName + "-") return -1;
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string s = string(name, profileName.size() + 1);
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string::size_type p = s.find("-link");
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if (p == string::npos) return -1;
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int n;
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if (string2Int(string(s, 0, p), n) && n >= 0)
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return n;
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else
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return -1;
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}
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Generations findGenerations(Path profile, int& curGen) {
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Generations gens;
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Path profileDir = dirOf(profile);
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string profileName = baseNameOf(profile);
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for (auto& i : readDirectory(profileDir)) {
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int n;
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if (string2Int(string(s, 0, p), n) && n >= 0)
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return n;
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else
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return -1;
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if ((n = parseName(profileName, i.name)) != -1) {
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Generation gen;
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gen.path = profileDir + "/" + i.name;
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gen.number = n;
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struct stat st;
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if (lstat(gen.path.c_str(), &st) != 0)
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throw SysError(format("statting '%1%'") % gen.path);
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gen.creationTime = st.st_mtime;
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gens.push_back(gen);
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}
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}
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gens.sort(cmpGensByNumber);
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curGen = pathExists(profile) ? parseName(profileName, readLink(profile)) : -1;
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return gens;
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}
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static void makeName(const Path& profile, unsigned int num, Path& outLink) {
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Path prefix = (format("%1%-%2%") % profile % num).str();
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outLink = prefix + "-link";
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}
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Path createGeneration(ref<LocalFSStore> store, Path profile, Path outPath) {
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/* The new generation number should be higher than old the
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previous ones. */
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int dummy;
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Generations gens = findGenerations(profile, dummy);
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Generations findGenerations(Path profile, int & curGen)
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{
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Generations gens;
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unsigned int num;
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if (gens.size() > 0) {
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Generation last = gens.back();
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Path profileDir = dirOf(profile);
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string profileName = baseNameOf(profile);
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if (readLink(last.path) == outPath) {
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/* We only create a new generation symlink if it differs
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from the last one.
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for (auto & i : readDirectory(profileDir)) {
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int n;
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if ((n = parseName(profileName, i.name)) != -1) {
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Generation gen;
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gen.path = profileDir + "/" + i.name;
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gen.number = n;
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struct stat st;
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if (lstat(gen.path.c_str(), &st) != 0)
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throw SysError(format("statting '%1%'") % gen.path);
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gen.creationTime = st.st_mtime;
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gens.push_back(gen);
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}
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This helps keeping gratuitous installs/rebuilds from piling
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up uncontrolled numbers of generations, cluttering up the
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UI like grub. */
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return last.path;
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}
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gens.sort(cmpGensByNumber);
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num = gens.back().number;
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} else {
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num = 0;
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}
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curGen = pathExists(profile)
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? parseName(profileName, readLink(profile))
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: -1;
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/* Create the new generation. Note that addPermRoot() blocks if
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the garbage collector is running to prevent the stuff we've
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built from moving from the temporary roots (which the GC knows)
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to the permanent roots (of which the GC would have a stale
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view). If we didn't do it this way, the GC might remove the
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user environment etc. we've just built. */
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Path generation;
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makeName(profile, num + 1, generation);
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store->addPermRoot(outPath, generation, false, true);
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return gens;
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return generation;
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}
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static void makeName(const Path & profile, unsigned int num,
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Path & outLink)
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{
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Path prefix = (format("%1%-%2%") % profile % num).str();
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outLink = prefix + "-link";
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static void removeFile(const Path& path) {
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if (remove(path.c_str()) == -1)
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throw SysError(format("cannot unlink '%1%'") % path);
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}
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void deleteGeneration(const Path& profile, unsigned int gen) {
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Path generation;
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makeName(profile, gen, generation);
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removeFile(generation);
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}
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Path createGeneration(ref<LocalFSStore> store, Path profile, Path outPath)
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{
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/* The new generation number should be higher than old the
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previous ones. */
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int dummy;
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Generations gens = findGenerations(profile, dummy);
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static void deleteGeneration2(const Path& profile, unsigned int gen,
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bool dryRun) {
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if (dryRun)
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printInfo(format("would remove generation %1%") % gen);
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else {
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printInfo(format("removing generation %1%") % gen);
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deleteGeneration(profile, gen);
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}
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}
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unsigned int num;
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if (gens.size() > 0) {
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Generation last = gens.back();
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void deleteGenerations(const Path& profile,
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const std::set<unsigned int>& gensToDelete,
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bool dryRun) {
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PathLocks lock;
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lockProfile(lock, profile);
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if (readLink(last.path) == outPath) {
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/* We only create a new generation symlink if it differs
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from the last one.
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int curGen;
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Generations gens = findGenerations(profile, curGen);
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This helps keeping gratuitous installs/rebuilds from piling
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up uncontrolled numbers of generations, cluttering up the
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UI like grub. */
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return last.path;
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}
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if (gensToDelete.find(curGen) != gensToDelete.end())
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throw Error(format("cannot delete current generation of profile %1%'") %
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profile);
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num = gens.back().number;
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} else {
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num = 0;
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for (auto& i : gens) {
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if (gensToDelete.find(i.number) == gensToDelete.end()) continue;
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deleteGeneration2(profile, i.number, dryRun);
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}
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}
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void deleteGenerationsGreaterThan(const Path& profile, int max, bool dryRun) {
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PathLocks lock;
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lockProfile(lock, profile);
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int curGen;
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bool fromCurGen = false;
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Generations gens = findGenerations(profile, curGen);
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for (auto i = gens.rbegin(); i != gens.rend(); ++i) {
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if (i->number == curGen) {
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fromCurGen = true;
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max--;
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continue;
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}
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/* Create the new generation. Note that addPermRoot() blocks if
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the garbage collector is running to prevent the stuff we've
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built from moving from the temporary roots (which the GC knows)
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to the permanent roots (of which the GC would have a stale
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view). If we didn't do it this way, the GC might remove the
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user environment etc. we've just built. */
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Path generation;
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makeName(profile, num + 1, generation);
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store->addPermRoot(outPath, generation, false, true);
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return generation;
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if (fromCurGen) {
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if (max) {
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max--;
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continue;
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}
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deleteGeneration2(profile, i->number, dryRun);
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}
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}
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}
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void deleteOldGenerations(const Path& profile, bool dryRun) {
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PathLocks lock;
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lockProfile(lock, profile);
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static void removeFile(const Path & path)
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{
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if (remove(path.c_str()) == -1)
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throw SysError(format("cannot unlink '%1%'") % path);
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int curGen;
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Generations gens = findGenerations(profile, curGen);
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for (auto& i : gens)
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if (i.number != curGen) deleteGeneration2(profile, i.number, dryRun);
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}
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void deleteGenerationsOlderThan(const Path& profile, time_t t, bool dryRun) {
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PathLocks lock;
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lockProfile(lock, profile);
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void deleteGeneration(const Path & profile, unsigned int gen)
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{
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Path generation;
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makeName(profile, gen, generation);
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removeFile(generation);
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}
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int curGen;
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Generations gens = findGenerations(profile, curGen);
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static void deleteGeneration2(const Path & profile, unsigned int gen, bool dryRun)
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{
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if (dryRun)
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printInfo(format("would remove generation %1%") % gen);
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else {
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printInfo(format("removing generation %1%") % gen);
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deleteGeneration(profile, gen);
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bool canDelete = false;
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for (auto i = gens.rbegin(); i != gens.rend(); ++i)
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if (canDelete) {
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assert(i->creationTime < t);
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if (i->number != curGen) deleteGeneration2(profile, i->number, dryRun);
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} else if (i->creationTime < t) {
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/* We may now start deleting generations, but we don't
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delete this generation yet, because this generation was
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still the one that was active at the requested point in
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time. */
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canDelete = true;
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}
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}
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void deleteGenerationsOlderThan(const Path& profile, const string& timeSpec,
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bool dryRun) {
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time_t curTime = time(0);
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string strDays = string(timeSpec, 0, timeSpec.size() - 1);
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int days;
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void deleteGenerations(const Path & profile, const std::set<unsigned int> & gensToDelete, bool dryRun)
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{
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PathLocks lock;
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lockProfile(lock, profile);
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if (!string2Int(strDays, days) || days < 1)
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throw Error(format("invalid number of days specifier '%1%'") % timeSpec);
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int curGen;
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Generations gens = findGenerations(profile, curGen);
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time_t oldTime = curTime - days * 24 * 3600;
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if (gensToDelete.find(curGen) != gensToDelete.end())
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throw Error(format("cannot delete current generation of profile %1%'") % profile);
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for (auto & i : gens) {
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if (gensToDelete.find(i.number) == gensToDelete.end()) continue;
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deleteGeneration2(profile, i.number, dryRun);
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}
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deleteGenerationsOlderThan(profile, oldTime, dryRun);
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}
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void deleteGenerationsGreaterThan(const Path & profile, int max, bool dryRun)
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{
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PathLocks lock;
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lockProfile(lock, profile);
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void switchLink(Path link, Path target) {
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/* Hacky. */
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if (dirOf(target) == dirOf(link)) target = baseNameOf(target);
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int curGen;
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bool fromCurGen = false;
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Generations gens = findGenerations(profile, curGen);
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for (auto i = gens.rbegin(); i != gens.rend(); ++i) {
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if (i->number == curGen) {
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fromCurGen = true;
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max--;
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continue;
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}
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if (fromCurGen) {
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if (max) {
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max--;
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continue;
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}
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deleteGeneration2(profile, i->number, dryRun);
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}
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}
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replaceSymlink(target, link);
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}
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void deleteOldGenerations(const Path & profile, bool dryRun)
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{
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PathLocks lock;
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lockProfile(lock, profile);
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int curGen;
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Generations gens = findGenerations(profile, curGen);
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for (auto & i : gens)
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if (i.number != curGen)
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deleteGeneration2(profile, i.number, dryRun);
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void lockProfile(PathLocks& lock, const Path& profile) {
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lock.lockPaths({profile},
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(format("waiting for lock on profile '%1%'") % profile).str());
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lock.setDeletion(true);
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}
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void deleteGenerationsOlderThan(const Path & profile, time_t t, bool dryRun)
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{
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PathLocks lock;
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lockProfile(lock, profile);
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int curGen;
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Generations gens = findGenerations(profile, curGen);
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bool canDelete = false;
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for (auto i = gens.rbegin(); i != gens.rend(); ++i)
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if (canDelete) {
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assert(i->creationTime < t);
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if (i->number != curGen)
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deleteGeneration2(profile, i->number, dryRun);
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} else if (i->creationTime < t) {
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/* We may now start deleting generations, but we don't
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delete this generation yet, because this generation was
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still the one that was active at the requested point in
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time. */
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canDelete = true;
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}
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string optimisticLockProfile(const Path& profile) {
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return pathExists(profile) ? readLink(profile) : "";
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}
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void deleteGenerationsOlderThan(const Path & profile, const string & timeSpec, bool dryRun)
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{
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time_t curTime = time(0);
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string strDays = string(timeSpec, 0, timeSpec.size() - 1);
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int days;
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if (!string2Int(strDays, days) || days < 1)
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throw Error(format("invalid number of days specifier '%1%'") % timeSpec);
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time_t oldTime = curTime - days * 24 * 3600;
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deleteGenerationsOlderThan(profile, oldTime, dryRun);
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}
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void switchLink(Path link, Path target)
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{
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/* Hacky. */
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if (dirOf(target) == dirOf(link)) target = baseNameOf(target);
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replaceSymlink(target, link);
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}
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void lockProfile(PathLocks & lock, const Path & profile)
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{
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lock.lockPaths({profile}, (format("waiting for lock on profile '%1%'") % profile).str());
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lock.setDeletion(true);
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}
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string optimisticLockProfile(const Path & profile)
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{
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return pathExists(profile) ? readLink(profile) : "";
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}
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}
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} // namespace nix
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