Merge changes from topic "libutil-split" into main
* changes:
util.hh: Delete remaining file and clean up headers
util.hh: Move nativeSystem to local-derivation-goal.cc
util.hh: Move stuff to types.hh
util.cc: Delete remaining file
util.{hh,cc}: Move ignoreException to error.{hh,cc}
util.{hh,cc}: Split out namespaces.{hh,cc}
util.{hh,cc}: Split out users.{hh,cc}
util.{hh,cc}: Split out strings.{hh,cc}
util.{hh,cc}: Split out unix-domain-socket.{hh,cc}
util.{hh,cc}: Split out child.{hh,cc}
util.{hh,cc}: Split out current-process.{hh,cc}
util.{hh,cc}: Split out processes.{hh,cc}
util.{hh,cc}: Split out file-descriptor.{hh,cc}
util.{hh,cc}: Split out file-system.{hh,cc}
util.{hh,cc}: Split out terminal.{hh,cc}
util.{hh,cc}: Split out environment-variables.{hh,cc}
This commit is contained in:
Gerrit Code Review
commit
562ff516ab
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@ -11,7 +11,6 @@
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#include "derivations.hh"
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#include "globals.hh"
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#include "store-api.hh"
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#include "util.hh"
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#include "crypto.hh"
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#include <sodium.h>
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@ -2,7 +2,6 @@
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#include "common-eval-args.hh"
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#include "shared.hh"
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#include "filetransfer.hh"
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#include "util.hh"
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#include "eval.hh"
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#include "fetchers.hh"
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#include "registry.hh"
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@ -1,5 +1,5 @@
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#include "util.hh"
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#include "editor-for.hh"
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#include "environment-variables.hh"
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#include "source-path.hh"
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namespace nix {
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@ -1,7 +1,6 @@
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#include "globals.hh"
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#include "installable-attr-path.hh"
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#include "outputs-spec.hh"
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#include "util.hh"
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#include "command.hh"
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#include "attr-path.hh"
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#include "common-eval-args.hh"
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@ -4,7 +4,6 @@
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#include "globals.hh"
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#include "installable-value.hh"
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#include "outputs-spec.hh"
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#include "util.hh"
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#include "command.hh"
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#include "attr-path.hh"
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#include "common-eval-args.hh"
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@ -2,7 +2,6 @@
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#include "installable-flake.hh"
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#include "installable-derived-path.hh"
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#include "outputs-spec.hh"
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#include "util.hh"
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#include "command.hh"
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#include "attr-path.hh"
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#include "common-eval-args.hh"
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@ -3,26 +3,21 @@
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#include "installable-derived-path.hh"
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#include "installable-attr-path.hh"
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#include "installable-flake.hh"
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#include "logging.hh"
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#include "outputs-spec.hh"
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#include "util.hh"
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#include "command.hh"
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#include "attr-path.hh"
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#include "common-eval-args.hh"
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#include "derivations.hh"
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#include "eval-inline.hh"
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#include "eval.hh"
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#include "eval-settings.hh"
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#include "get-drvs.hh"
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#include "store-api.hh"
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#include "shared.hh"
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#include "flake/flake.hh"
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#include "eval-cache.hh"
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#include "url.hh"
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#include "registry.hh"
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#include "build-result.hh"
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#include <regex>
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#include <queue>
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#include <nlohmann/json.hpp>
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@ -1,7 +1,6 @@
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#pragma once
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///@file
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#include "util.hh"
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#include "path.hh"
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#include "outputs-spec.hh"
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#include "derived-path.hh"
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@ -1,6 +1,7 @@
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#include "markdown.hh"
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#include "util.hh"
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#include "error.hh"
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#include "finally.hh"
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#include "terminal.hh"
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#include <sys/queue.h>
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#include <lowdown.h>
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@ -1,3 +1,7 @@
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#include "error.hh"
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#include "file-system.hh"
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#include "logging.hh"
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#include <csignal>
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#include <cstdio>
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#include <iostream>
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#include <string>
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@ -18,11 +22,8 @@ extern "C" {
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}
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#endif
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#include "signals.hh"
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#include "finally.hh"
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#include "repl-interacter.hh"
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#include "util.hh"
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#include "repl.hh"
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namespace nix {
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@ -31,6 +31,7 @@
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#include "print.hh"
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#include "progress-bar.hh"
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#include "gc-small-vector.hh"
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#include "users.hh"
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#if HAVE_BOEHMGC
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#define GC_INCLUDE_NEW
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@ -1,6 +1,5 @@
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#include "attr-path.hh"
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#include "eval-inline.hh"
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#include "util.hh"
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namespace nix {
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@ -1,8 +1,8 @@
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#include "eval-cache.hh"
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#include "sqlite.hh"
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#include "eval.hh"
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#include "eval-inline.hh"
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#include "store-api.hh"
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#include "users.hh"
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namespace nix::eval_cache {
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@ -1,6 +1,7 @@
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#include "file-system.hh"
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#include "globals.hh"
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#include "profiles.hh"
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#include "eval.hh"
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#include "users.hh"
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#include "eval-settings.hh"
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namespace nix {
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@ -5,7 +5,6 @@
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#include "print-options.hh"
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#include "shared.hh"
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#include "types.hh"
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#include "util.hh"
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#include "store-api.hh"
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#include "derivations.hh"
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#include "downstream-placeholder.hh"
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@ -1,5 +1,6 @@
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#include "flake.hh"
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#include "globals.hh"
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#include "logging.hh"
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#include "users.hh"
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#include "fetch-settings.hh"
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#include <nlohmann/json.hpp>
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@ -8,6 +8,7 @@
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#include "fetchers.hh"
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#include "finally.hh"
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#include "fetch-settings.hh"
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#include "terminal.hh"
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namespace nix {
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@ -1,5 +1,4 @@
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#include "get-drvs.hh"
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#include "util.hh"
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#include "eval-inline.hh"
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#include "derivations.hh"
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#include "store-api.hh"
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@ -2,7 +2,6 @@
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#include "derivations.hh"
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#include "eval.hh"
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#include "symbol-table.hh"
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#include "util.hh"
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#include "print.hh"
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#include "escape-string.hh"
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@ -19,7 +19,7 @@
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#include <variant>
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#include "finally.hh"
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#include "util.hh"
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#include "users.hh"
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#include "nixexpr.hh"
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#include "eval.hh"
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@ -9,8 +9,8 @@
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#include "json-to-value.hh"
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#include "names.hh"
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#include "path-references.hh"
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#include "processes.hh"
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#include "store-api.hh"
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#include "util.hh"
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#include "value-to-json.hh"
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#include "value-to-xml.hh"
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#include "primops.hh"
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@ -1,6 +1,7 @@
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#include "print-ambiguous.hh"
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#include "attr-set.hh"
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#include "logging.hh"
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#include "print.hh"
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#include "eval.hh"
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#include "signals.hh"
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#include "escape-string.hh"
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@ -9,6 +9,7 @@
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#include "english.hh"
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#include "signals.hh"
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#include "eval.hh"
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#include "terminal.hh"
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namespace nix {
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@ -1,5 +1,4 @@
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#include "search-path.hh"
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#include "util.hh"
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namespace nix {
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@ -1,6 +1,5 @@
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#include "value-to-json.hh"
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#include "eval-inline.hh"
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#include "util.hh"
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#include "signals.hh"
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#include "store-api.hh"
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@ -1,11 +1,7 @@
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#include "value-to-xml.hh"
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#include "xml-writer.hh"
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#include "eval-inline.hh"
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#include "util.hh"
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#include "signals.hh"
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#include <cstdlib>
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namespace nix {
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@ -1,7 +1,6 @@
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#pragma once
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///@file
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#include "util.hh"
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#include "comparator.hh"
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#include "derived-path.hh"
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#include "variant-wrapper.hh"
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@ -2,6 +2,7 @@
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#include "sqlite.hh"
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#include "sync.hh"
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#include "store-api.hh"
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#include "users.hh"
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#include <nlohmann/json.hpp>
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|
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@ -3,7 +3,6 @@
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#include "types.hh"
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#include "config.hh"
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#include "util.hh"
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#include <map>
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#include <limits>
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|
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|
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@ -3,7 +3,6 @@
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#include "source-path.hh"
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#include "store-api.hh"
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#include "util.hh"
|
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#include "repair-flag.hh"
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#include "content-address.hh"
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|
|
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|
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@ -1,11 +1,12 @@
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#include "fetchers.hh"
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#include "cache.hh"
|
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#include "globals.hh"
|
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#include "processes.hh"
|
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#include "tarfile.hh"
|
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#include "store-api.hh"
|
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#include "url-parts.hh"
|
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#include "pathlocks.hh"
|
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#include "util.hh"
|
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#include "users.hh"
|
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#include "git.hh"
|
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#include "logging.hh"
|
||||
#include "finally.hh"
|
||||
|
|
|
|||
|
|
@ -1,9 +1,9 @@
|
|||
#include "fetchers.hh"
|
||||
#include "cache.hh"
|
||||
#include "globals.hh"
|
||||
#include "tarfile.hh"
|
||||
#include "processes.hh"
|
||||
#include "store-api.hh"
|
||||
#include "url-parts.hh"
|
||||
#include "users.hh"
|
||||
|
||||
#include "fetch-settings.hh"
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
#include "registry.hh"
|
||||
#include "fetchers.hh"
|
||||
#include "util.hh"
|
||||
#include "users.hh"
|
||||
#include "globals.hh"
|
||||
#include "store-api.hh"
|
||||
#include "local-fs-store.hh"
|
||||
|
|
|
|||
|
|
@ -2,6 +2,7 @@
|
|||
#include "args/root.hh"
|
||||
#include "globals.hh"
|
||||
#include "loggers.hh"
|
||||
#include "logging.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
#include "environment-variables.hh"
|
||||
#include "loggers.hh"
|
||||
#include "progress-bar.hh"
|
||||
#include "util.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -1,8 +1,8 @@
|
|||
#include "progress-bar.hh"
|
||||
#include "util.hh"
|
||||
#include "sync.hh"
|
||||
#include "store-api.hh"
|
||||
#include "names.hh"
|
||||
#include "terminal.hh"
|
||||
|
||||
#include <atomic>
|
||||
#include <map>
|
||||
|
|
|
|||
|
|
@ -2,10 +2,10 @@
|
|||
#include "shared.hh"
|
||||
#include "store-api.hh"
|
||||
#include "gc-store.hh"
|
||||
#include "util.hh"
|
||||
#include "signals.hh"
|
||||
#include "loggers.hh"
|
||||
#include "progress-bar.hh"
|
||||
#include "current-process.hh"
|
||||
|
||||
#include <algorithm>
|
||||
#include <cctype>
|
||||
|
|
|
|||
|
|
@ -1,12 +1,12 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include "util.hh"
|
||||
#include "args.hh"
|
||||
#include "args/root.hh"
|
||||
#include "common-args.hh"
|
||||
#include "path.hh"
|
||||
#include "derived-path.hh"
|
||||
#include "processes.hh"
|
||||
#include "exit.hh"
|
||||
|
||||
#include <signal.h>
|
||||
|
|
|
|||
33
src/libstore/build/child.cc
Normal file
33
src/libstore/build/child.cc
Normal file
|
|
@ -0,0 +1,33 @@
|
|||
#include "current-process.hh"
|
||||
#include "logging.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
void commonChildInit()
|
||||
{
|
||||
logger = makeSimpleLogger();
|
||||
|
||||
const static std::string pathNullDevice = "/dev/null";
|
||||
restoreProcessContext(false);
|
||||
|
||||
/* Put the child in a separate session (and thus a separate
|
||||
process group) so that it has no controlling terminal (meaning
|
||||
that e.g. ssh cannot open /dev/tty) and it doesn't receive
|
||||
terminal signals. */
|
||||
if (setsid() == -1)
|
||||
throw SysError("creating a new session");
|
||||
|
||||
/* Dup stderr to stdout. */
|
||||
if (dup2(STDERR_FILENO, STDOUT_FILENO) == -1)
|
||||
throw SysError("cannot dup stderr into stdout");
|
||||
|
||||
/* Reroute stdin to /dev/null. */
|
||||
int fdDevNull = open(pathNullDevice.c_str(), O_RDWR);
|
||||
if (fdDevNull == -1)
|
||||
throw SysError("cannot open '%1%'", pathNullDevice);
|
||||
if (dup2(fdDevNull, STDIN_FILENO) == -1)
|
||||
throw SysError("cannot dup null device into stdin");
|
||||
close(fdDevNull);
|
||||
}
|
||||
|
||||
}
|
||||
11
src/libstore/build/child.hh
Normal file
11
src/libstore/build/child.hh
Normal file
|
|
@ -0,0 +1,11 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
namespace nix {
|
||||
|
||||
/**
|
||||
* Common initialisation performed in child processes.
|
||||
*/
|
||||
void commonChildInit();
|
||||
|
||||
}
|
||||
|
|
@ -5,7 +5,6 @@
|
|||
#include "builtins/buildenv.hh"
|
||||
#include "references.hh"
|
||||
#include "finally.hh"
|
||||
#include "util.hh"
|
||||
#include "archive.hh"
|
||||
#include "compression.hh"
|
||||
#include "common-protocol.hh"
|
||||
|
|
|
|||
|
|
@ -1,3 +1,5 @@
|
|||
#include "child.hh"
|
||||
#include "file-system.hh"
|
||||
#include "globals.hh"
|
||||
#include "hook-instance.hh"
|
||||
|
||||
|
|
|
|||
|
|
@ -2,6 +2,7 @@
|
|||
///@file
|
||||
|
||||
#include "logging.hh"
|
||||
#include "processes.hh"
|
||||
#include "serialise.hh"
|
||||
|
||||
namespace nix {
|
||||
|
|
|
|||
|
|
@ -6,7 +6,6 @@
|
|||
#include "builtins/buildenv.hh"
|
||||
#include "path-references.hh"
|
||||
#include "finally.hh"
|
||||
#include "util.hh"
|
||||
#include "archive.hh"
|
||||
#include "compression.hh"
|
||||
#include "daemon.hh"
|
||||
|
|
@ -15,6 +14,8 @@
|
|||
#include "cgroup.hh"
|
||||
#include "personality.hh"
|
||||
#include "namespaces.hh"
|
||||
#include "child.hh"
|
||||
#include "unix-domain-socket.hh"
|
||||
|
||||
#include <regex>
|
||||
#include <queue>
|
||||
|
|
@ -63,6 +64,11 @@ extern "C" int sandbox_init_with_parameters(const char *profile, uint64_t flags,
|
|||
|
||||
namespace nix {
|
||||
|
||||
/**
|
||||
* The system for which Nix is compiled.
|
||||
*/
|
||||
constexpr std::string_view nativeSystem = SYSTEM;
|
||||
|
||||
void handleDiffHook(
|
||||
uid_t uid, uid_t gid,
|
||||
const Path & tryA, const Path & tryB,
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
|
||||
#include "derivation-goal.hh"
|
||||
#include "local-store.hh"
|
||||
#include "processes.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -1,11 +1,8 @@
|
|||
#include "serialise.hh"
|
||||
#include "util.hh"
|
||||
#include "path-with-outputs.hh"
|
||||
#include "store-api.hh"
|
||||
#include "build-result.hh"
|
||||
#include "common-protocol.hh"
|
||||
#include "common-protocol-impl.hh"
|
||||
#include "archive.hh"
|
||||
#include "derivations.hh"
|
||||
|
||||
#include <nlohmann/json.hpp>
|
||||
|
|
|
|||
|
|
@ -1,6 +1,7 @@
|
|||
#include "crypto.hh"
|
||||
#include "util.hh"
|
||||
#include "file-system.hh"
|
||||
#include "globals.hh"
|
||||
#include "strings.hh"
|
||||
|
||||
#include <sodium.h>
|
||||
|
||||
|
|
|
|||
|
|
@ -1,9 +1,9 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include "types.hh"
|
||||
|
||||
#include <map>
|
||||
#include <string>
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -3,7 +3,6 @@
|
|||
#include "store-api.hh"
|
||||
#include "globals.hh"
|
||||
#include "types.hh"
|
||||
#include "util.hh"
|
||||
#include "split.hh"
|
||||
#include "common-protocol.hh"
|
||||
#include "common-protocol-impl.hh"
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include "util.hh"
|
||||
#include "config.hh"
|
||||
#include "path.hh"
|
||||
#include "outputs-spec.hh"
|
||||
#include "comparator.hh"
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
#include "filetransfer.hh"
|
||||
#include "util.hh"
|
||||
#include "namespaces.hh"
|
||||
#include "globals.hh"
|
||||
#include "store-api.hh"
|
||||
#include "s3.hh"
|
||||
|
|
@ -19,7 +19,6 @@
|
|||
#include <algorithm>
|
||||
#include <cmath>
|
||||
#include <cstring>
|
||||
#include <iostream>
|
||||
#include <queue>
|
||||
#include <random>
|
||||
#include <thread>
|
||||
|
|
|
|||
|
|
@ -1,8 +1,9 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include "logging.hh"
|
||||
#include "serialise.hh"
|
||||
#include "types.hh"
|
||||
#include "hash.hh"
|
||||
#include "config.hh"
|
||||
|
||||
#include <string>
|
||||
|
|
|
|||
|
|
@ -1,16 +1,14 @@
|
|||
#include "derivations.hh"
|
||||
#include "globals.hh"
|
||||
#include "local-store.hh"
|
||||
#include "pathlocks.hh"
|
||||
#include "processes.hh"
|
||||
#include "signals.hh"
|
||||
#include "finally.hh"
|
||||
#include "unix-domain-socket.hh"
|
||||
|
||||
#include <functional>
|
||||
#include <queue>
|
||||
#include <algorithm>
|
||||
#include <regex>
|
||||
#include <random>
|
||||
|
||||
#include <climits>
|
||||
#include <errno.h>
|
||||
#include <fcntl.h>
|
||||
#include <poll.h>
|
||||
|
|
|
|||
|
|
@ -1,12 +1,15 @@
|
|||
#include "environment-variables.hh"
|
||||
#include "globals.hh"
|
||||
#include "util.hh"
|
||||
#include "archive.hh"
|
||||
#include "file-system.hh"
|
||||
#include "logging.hh"
|
||||
#include "strings.hh"
|
||||
#include "users.hh"
|
||||
#include "args.hh"
|
||||
#include "abstract-setting-to-json.hh"
|
||||
#include "compute-levels.hh"
|
||||
#include "current-process.hh"
|
||||
|
||||
#include <algorithm>
|
||||
#include <map>
|
||||
#include <mutex>
|
||||
#include <thread>
|
||||
#include <dlfcn.h>
|
||||
|
|
@ -25,6 +28,7 @@
|
|||
#include "config-impl.hh"
|
||||
|
||||
#ifdef __APPLE__
|
||||
#include "processes.hh"
|
||||
#include <curl/curl.h>
|
||||
#include <sys/sysctl.h>
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -1,9 +1,9 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include "environment-variables.hh"
|
||||
#include "types.hh"
|
||||
#include "config.hh"
|
||||
#include "util.hh"
|
||||
|
||||
#include <map>
|
||||
#include <limits>
|
||||
|
|
|
|||
|
|
@ -3,11 +3,9 @@
|
|||
|
||||
#include "sqlite.hh"
|
||||
|
||||
#include "pathlocks.hh"
|
||||
#include "store-api.hh"
|
||||
#include "indirect-root-store.hh"
|
||||
#include "sync.hh"
|
||||
#include "util.hh"
|
||||
|
||||
#include <chrono>
|
||||
#include <future>
|
||||
|
|
|
|||
|
|
@ -1,4 +1,6 @@
|
|||
#include "lock.hh"
|
||||
#include "logging.hh"
|
||||
#include "file-system.hh"
|
||||
#include "globals.hh"
|
||||
#include "pathlocks.hh"
|
||||
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
#include "machines.hh"
|
||||
#include "util.hh"
|
||||
#include "globals.hh"
|
||||
#include "store-api.hh"
|
||||
#include "strings.hh"
|
||||
|
||||
#include <algorithm>
|
||||
|
||||
|
|
|
|||
|
|
@ -79,6 +79,7 @@ libstore_sources = files(
|
|||
'store-api.cc',
|
||||
'uds-remote-store.cc',
|
||||
'worker-protocol.cc',
|
||||
'build/child.cc',
|
||||
'build/derivation-goal.cc',
|
||||
'build/drv-output-substitution-goal.cc',
|
||||
'build/entry-points.cc',
|
||||
|
|
@ -96,6 +97,7 @@ libstore_sources = files(
|
|||
|
||||
libstore_headers = files(
|
||||
'binary-cache-store.hh',
|
||||
'build/child.hh',
|
||||
'build/derivation-goal.hh',
|
||||
'build/drv-output-substitution-goal.hh',
|
||||
'build/goal.hh',
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
#include "names.hh"
|
||||
#include "util.hh"
|
||||
#include "strings.hh"
|
||||
|
||||
#include <regex>
|
||||
|
||||
|
|
|
|||
|
|
@ -1,7 +1,9 @@
|
|||
#include "nar-info-disk-cache.hh"
|
||||
#include "logging.hh"
|
||||
#include "sync.hh"
|
||||
#include "sqlite.hh"
|
||||
#include "globals.hh"
|
||||
#include "users.hh"
|
||||
|
||||
#include <sqlite3.h>
|
||||
#include <nlohmann/json.hpp>
|
||||
|
|
|
|||
|
|
@ -1,4 +1,3 @@
|
|||
#include "util.hh"
|
||||
#include "local-store.hh"
|
||||
#include "globals.hh"
|
||||
#include "signals.hh"
|
||||
|
|
|
|||
|
|
@ -1,10 +1,10 @@
|
|||
#include <regex>
|
||||
#include <nlohmann/json.hpp>
|
||||
|
||||
#include "util.hh"
|
||||
#include "regex-combinators.hh"
|
||||
#include "outputs-spec.hh"
|
||||
#include "path-regex.hh"
|
||||
#include "strings.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -1,12 +1,8 @@
|
|||
#include "path-references.hh"
|
||||
#include "hash.hh"
|
||||
#include "util.hh"
|
||||
#include "archive.hh"
|
||||
|
||||
#include <map>
|
||||
#include <cstdlib>
|
||||
#include <mutex>
|
||||
#include <algorithm>
|
||||
|
||||
|
||||
namespace nix {
|
||||
|
|
|
|||
|
|
@ -1,10 +1,8 @@
|
|||
#include "pathlocks.hh"
|
||||
#include "util.hh"
|
||||
#include "logging.hh"
|
||||
#include "signals.hh"
|
||||
#include "sync.hh"
|
||||
|
||||
#include <cerrno>
|
||||
#include <cstdlib>
|
||||
|
||||
#include <fcntl.h>
|
||||
#include <sys/types.h>
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include "util.hh"
|
||||
#include "file-descriptor.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
#include "profiles.hh"
|
||||
#include "store-api.hh"
|
||||
#include "local-fs-store.hh"
|
||||
#include "util.hh"
|
||||
#include "users.hh"
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
|
|
|
|||
|
|
@ -1,5 +1,4 @@
|
|||
#include "serialise.hh"
|
||||
#include "util.hh"
|
||||
#include "signals.hh"
|
||||
#include "path-with-outputs.hh"
|
||||
#include "gc-store.hh"
|
||||
|
|
|
|||
|
|
@ -1,11 +1,9 @@
|
|||
#include "serialise.hh"
|
||||
#include "util.hh"
|
||||
#include "path-with-outputs.hh"
|
||||
#include "store-api.hh"
|
||||
#include "build-result.hh"
|
||||
#include "serve-protocol.hh"
|
||||
#include "serve-protocol-impl.hh"
|
||||
#include "archive.hh"
|
||||
#include "path-info.hh"
|
||||
|
||||
#include <nlohmann/json.hpp>
|
||||
|
|
|
|||
|
|
@ -1,12 +1,11 @@
|
|||
#include "sqlite.hh"
|
||||
#include "globals.hh"
|
||||
#include "util.hh"
|
||||
#include "logging.hh"
|
||||
#include "signals.hh"
|
||||
#include "url.hh"
|
||||
|
||||
#include <sqlite3.h>
|
||||
|
||||
#include <atomic>
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -1,5 +1,9 @@
|
|||
#include "current-process.hh"
|
||||
#include "environment-variables.hh"
|
||||
#include "ssh.hh"
|
||||
#include "finally.hh"
|
||||
#include "logging.hh"
|
||||
#include "strings.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -1,7 +1,8 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include "util.hh"
|
||||
#include "file-system.hh"
|
||||
#include "processes.hh"
|
||||
#include "sync.hh"
|
||||
|
||||
namespace nix {
|
||||
|
|
|
|||
|
|
@ -1,9 +1,7 @@
|
|||
#include "crypto.hh"
|
||||
#include "fs-accessor.hh"
|
||||
#include "globals.hh"
|
||||
#include "derivations.hh"
|
||||
#include "store-api.hh"
|
||||
#include "util.hh"
|
||||
#include "nar-info-disk-cache.hh"
|
||||
#include "thread-pool.hh"
|
||||
#include "url.hh"
|
||||
|
|
@ -14,6 +12,7 @@
|
|||
// FIXME this should not be here, see TODO below on
|
||||
// `addMultipleToStore`.
|
||||
#include "worker-protocol.hh"
|
||||
#include "users.hh"
|
||||
|
||||
#include <nlohmann/json.hpp>
|
||||
#include <regex>
|
||||
|
|
|
|||
|
|
@ -1,6 +1,7 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include "logging.hh"
|
||||
#include "nar-info.hh"
|
||||
#include "realisation.hh"
|
||||
#include "path.hh"
|
||||
|
|
|
|||
|
|
@ -1,4 +1,5 @@
|
|||
#include "uds-remote-store.hh"
|
||||
#include "unix-domain-socket.hh"
|
||||
#include "worker-protocol.hh"
|
||||
|
||||
#include <sys/types.h>
|
||||
|
|
|
|||
|
|
@ -1,5 +1,4 @@
|
|||
#include "serialise.hh"
|
||||
#include "util.hh"
|
||||
#include "path-with-outputs.hh"
|
||||
#include "store-api.hh"
|
||||
#include "build-result.hh"
|
||||
|
|
|
|||
|
|
@ -12,8 +12,9 @@
|
|||
#include <fcntl.h>
|
||||
|
||||
#include "archive.hh"
|
||||
#include "util.hh"
|
||||
#include "file-system.hh"
|
||||
#include "config.hh"
|
||||
#include "logging.hh"
|
||||
#include "signals.hh"
|
||||
|
||||
namespace nix {
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
|
||||
#include "types.hh"
|
||||
#include "serialise.hh"
|
||||
#include "file-system.hh"
|
||||
|
||||
|
||||
namespace nix {
|
||||
|
|
|
|||
|
|
@ -2,7 +2,10 @@
|
|||
#include "args/root.hh"
|
||||
#include "hash.hh"
|
||||
#include "json-utils.hh"
|
||||
#include "environment-variables.hh"
|
||||
|
||||
#include "experimental-features-json.hh"
|
||||
#include "logging.hh"
|
||||
|
||||
#include <glob.h>
|
||||
|
||||
|
|
|
|||
|
|
@ -1,13 +1,17 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include <iostream>
|
||||
#include "experimental-features.hh"
|
||||
#include "types.hh"
|
||||
#include <functional>
|
||||
#include <map>
|
||||
#include <memory>
|
||||
#include <limits>
|
||||
|
||||
#include <nlohmann/json_fwd.hpp>
|
||||
#include <optional>
|
||||
#include <set>
|
||||
|
||||
#include "util.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -1,5 +1,5 @@
|
|||
#include "canon-path.hh"
|
||||
#include "util.hh"
|
||||
#include "file-system.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -1,14 +1,17 @@
|
|||
#include "logging.hh"
|
||||
#if __linux__
|
||||
|
||||
#include "cgroup.hh"
|
||||
#include "util.hh"
|
||||
#include "file-system.hh"
|
||||
#include "finally.hh"
|
||||
#include "strings.hh"
|
||||
|
||||
#include <chrono>
|
||||
#include <cmath>
|
||||
#include <regex>
|
||||
#include <unordered_set>
|
||||
#include <thread>
|
||||
#include <signal.h>
|
||||
|
||||
#include <dirent.h>
|
||||
#include <mntent.h>
|
||||
|
|
|
|||
|
|
@ -1,6 +1,8 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include <tuple>
|
||||
|
||||
#define DECLARE_ONE_CMP(PRE, QUAL, COMPARATOR, MY_TYPE) \
|
||||
PRE bool QUAL operator COMPARATOR(const MY_TYPE & other) const;
|
||||
#define DECLARE_EQUAL(prefix, qualification, my_type) \
|
||||
|
|
|
|||
|
|
@ -1,7 +1,5 @@
|
|||
#include "compression.hh"
|
||||
#include "tarfile.hh"
|
||||
#include "util.hh"
|
||||
#include "finally.hh"
|
||||
#include "signals.hh"
|
||||
#include "logging.hh"
|
||||
|
||||
|
|
@ -13,7 +11,6 @@
|
|||
#include <brotli/decode.h>
|
||||
#include <brotli/encode.h>
|
||||
|
||||
#include <iostream>
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -12,7 +12,9 @@
|
|||
* instantiation.
|
||||
*/
|
||||
|
||||
#include "args.hh"
|
||||
#include "config.hh"
|
||||
#include "logging.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
|
|||
|
|
@ -2,6 +2,9 @@
|
|||
#include "args.hh"
|
||||
#include "abstract-setting-to-json.hh"
|
||||
#include "experimental-features.hh"
|
||||
#include "file-system.hh"
|
||||
#include "logging.hh"
|
||||
#include "strings.hh"
|
||||
|
||||
#include "config-impl.hh"
|
||||
|
||||
|
|
|
|||
111
src/libutil/current-process.cc
Normal file
111
src/libutil/current-process.cc
Normal file
|
|
@ -0,0 +1,111 @@
|
|||
#include "current-process.hh"
|
||||
#include "error.hh"
|
||||
#include "file-system.hh"
|
||||
#include "logging.hh"
|
||||
#include "namespaces.hh"
|
||||
#include "signals.hh"
|
||||
#include "strings.hh"
|
||||
|
||||
#ifdef __APPLE__
|
||||
# include <mach-o/dyld.h>
|
||||
#endif
|
||||
|
||||
#if __linux__
|
||||
# include <sys/resource.h>
|
||||
#endif
|
||||
|
||||
#include <sys/mount.h>
|
||||
#include <cgroup.hh>
|
||||
|
||||
namespace nix {
|
||||
|
||||
unsigned int getMaxCPU()
|
||||
{
|
||||
#if __linux__
|
||||
try {
|
||||
auto cgroupFS = getCgroupFS();
|
||||
if (!cgroupFS) return 0;
|
||||
|
||||
auto cgroups = getCgroups("/proc/self/cgroup");
|
||||
auto cgroup = cgroups[""];
|
||||
if (cgroup == "") return 0;
|
||||
|
||||
auto cpuFile = *cgroupFS + "/" + cgroup + "/cpu.max";
|
||||
|
||||
auto cpuMax = readFile(cpuFile);
|
||||
auto cpuMaxParts = tokenizeString<std::vector<std::string>>(cpuMax, " \n");
|
||||
|
||||
if (cpuMaxParts.size() != 2) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
auto quota = cpuMaxParts[0];
|
||||
auto period = cpuMaxParts[1];
|
||||
if (quota != "max")
|
||||
return std::ceil(std::stoi(quota) / std::stof(period));
|
||||
} catch (Error &) { ignoreException(lvlDebug); }
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
rlim_t savedStackSize = 0;
|
||||
|
||||
void setStackSize(rlim_t stackSize)
|
||||
{
|
||||
struct rlimit limit;
|
||||
if (getrlimit(RLIMIT_STACK, &limit) == 0 && limit.rlim_cur < stackSize) {
|
||||
savedStackSize = limit.rlim_cur;
|
||||
limit.rlim_cur = std::min(stackSize, limit.rlim_max);
|
||||
if (setrlimit(RLIMIT_STACK, &limit) != 0) {
|
||||
logger->log(
|
||||
lvlError,
|
||||
HintFmt(
|
||||
"Failed to increase stack size from %1% to %2% (maximum allowed stack size: %3%): %4%",
|
||||
savedStackSize,
|
||||
stackSize,
|
||||
limit.rlim_max,
|
||||
std::strerror(errno)
|
||||
).str()
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void restoreProcessContext(bool restoreMounts)
|
||||
{
|
||||
restoreSignals();
|
||||
if (restoreMounts) {
|
||||
restoreMountNamespace();
|
||||
}
|
||||
|
||||
if (savedStackSize) {
|
||||
struct rlimit limit;
|
||||
if (getrlimit(RLIMIT_STACK, &limit) == 0) {
|
||||
limit.rlim_cur = savedStackSize;
|
||||
setrlimit(RLIMIT_STACK, &limit);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
std::optional<Path> getSelfExe()
|
||||
{
|
||||
static auto cached = []() -> std::optional<Path>
|
||||
{
|
||||
#if __linux__
|
||||
return readLink("/proc/self/exe");
|
||||
#elif __APPLE__
|
||||
char buf[1024];
|
||||
uint32_t size = sizeof(buf);
|
||||
if (_NSGetExecutablePath(buf, &size) == 0)
|
||||
return buf;
|
||||
else
|
||||
return std::nullopt;
|
||||
#else
|
||||
return std::nullopt;
|
||||
#endif
|
||||
}();
|
||||
return cached;
|
||||
}
|
||||
|
||||
}
|
||||
37
src/libutil/current-process.hh
Normal file
37
src/libutil/current-process.hh
Normal file
|
|
@ -0,0 +1,37 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include <optional>
|
||||
#include <sys/resource.h>
|
||||
|
||||
#include "types.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
/**
|
||||
* If cgroups are active, attempt to calculate the number of CPUs available.
|
||||
* If cgroups are unavailable or if cpu.max is set to "max", return 0.
|
||||
*/
|
||||
unsigned int getMaxCPU();
|
||||
|
||||
|
||||
/**
|
||||
* Change the stack size.
|
||||
*/
|
||||
void setStackSize(rlim_t stackSize);
|
||||
|
||||
|
||||
/**
|
||||
* Restore the original inherited Unix process context (such as signal
|
||||
* masks, stack size).
|
||||
|
||||
* See startSignalHandlerThread(), saveSignalMask().
|
||||
*/
|
||||
void restoreProcessContext(bool restoreMounts = true);
|
||||
|
||||
/**
|
||||
* @return the path of the current executable.
|
||||
*/
|
||||
std::optional<Path> getSelfExe();
|
||||
|
||||
}
|
||||
51
src/libutil/environment-variables.cc
Normal file
51
src/libutil/environment-variables.cc
Normal file
|
|
@ -0,0 +1,51 @@
|
|||
#include <cstring>
|
||||
#include <map>
|
||||
#include <optional>
|
||||
#include <string>
|
||||
|
||||
extern char * * environ __attribute__((weak));
|
||||
|
||||
namespace nix {
|
||||
|
||||
std::optional<std::string> getEnv(const std::string & key)
|
||||
{
|
||||
char * value = getenv(key.c_str());
|
||||
if (!value) return {};
|
||||
return std::string(value);
|
||||
}
|
||||
|
||||
std::optional<std::string> getEnvNonEmpty(const std::string & key) {
|
||||
auto value = getEnv(key);
|
||||
if (value == "") return {};
|
||||
return value;
|
||||
}
|
||||
|
||||
std::map<std::string, std::string> getEnv()
|
||||
{
|
||||
std::map<std::string, std::string> env;
|
||||
for (size_t i = 0; environ[i]; ++i) {
|
||||
auto s = environ[i];
|
||||
auto eq = strchr(s, '=');
|
||||
if (!eq)
|
||||
// invalid env, just keep going
|
||||
continue;
|
||||
env.emplace(std::string(s, eq), std::string(eq + 1));
|
||||
}
|
||||
return env;
|
||||
}
|
||||
|
||||
|
||||
void clearEnv()
|
||||
{
|
||||
for (auto & name : getEnv())
|
||||
unsetenv(name.first.c_str());
|
||||
}
|
||||
|
||||
void replaceEnv(const std::map<std::string, std::string> & newEnv)
|
||||
{
|
||||
clearEnv();
|
||||
for (auto & newEnvVar : newEnv)
|
||||
setenv(newEnvVar.first.c_str(), newEnvVar.second.c_str(), 1);
|
||||
}
|
||||
|
||||
}
|
||||
42
src/libutil/environment-variables.hh
Normal file
42
src/libutil/environment-variables.hh
Normal file
|
|
@ -0,0 +1,42 @@
|
|||
#pragma once
|
||||
/**
|
||||
* @file
|
||||
*
|
||||
* Utilities for working with the current process's environment
|
||||
* variables.
|
||||
*/
|
||||
|
||||
#include <map>
|
||||
#include <optional>
|
||||
#include <string>
|
||||
|
||||
|
||||
namespace nix {
|
||||
|
||||
/**
|
||||
* @return an environment variable.
|
||||
*/
|
||||
std::optional<std::string> getEnv(const std::string & key);
|
||||
|
||||
/**
|
||||
* @return a non empty environment variable. Returns nullopt if the env
|
||||
* variable is set to ""
|
||||
*/
|
||||
std::optional<std::string> getEnvNonEmpty(const std::string & key);
|
||||
|
||||
/**
|
||||
* Get the entire environment.
|
||||
*/
|
||||
std::map<std::string, std::string> getEnv();
|
||||
|
||||
/**
|
||||
* Clear the environment.
|
||||
*/
|
||||
void clearEnv();
|
||||
|
||||
/**
|
||||
* Replace the entire environment with the given one.
|
||||
*/
|
||||
void replaceEnv(const std::map<std::string, std::string> & newEnv);
|
||||
|
||||
}
|
||||
|
|
@ -1,15 +1,15 @@
|
|||
#include "environment-variables.hh"
|
||||
#include "error.hh"
|
||||
#include "logging.hh"
|
||||
#include "position.hh"
|
||||
#include "terminal.hh"
|
||||
|
||||
#include <iostream>
|
||||
#include <optional>
|
||||
#include "serialise.hh"
|
||||
#include <sstream>
|
||||
|
||||
namespace nix {
|
||||
|
||||
const std::string nativeSystem = SYSTEM;
|
||||
|
||||
void BaseError::addTrace(std::shared_ptr<Pos> && e, HintFmt hint)
|
||||
{
|
||||
err.traces.push_front(Trace { .pos = std::move(e), .hint = hint });
|
||||
|
|
@ -415,4 +415,17 @@ std::ostream & showErrorInfo(std::ostream & out, const ErrorInfo & einfo, bool s
|
|||
return out;
|
||||
}
|
||||
|
||||
void ignoreException(Verbosity lvl)
|
||||
{
|
||||
/* Make sure no exceptions leave this function.
|
||||
printError() also throws when remote is closed. */
|
||||
try {
|
||||
try {
|
||||
throw;
|
||||
} catch (std::exception & e) {
|
||||
printMsg(lvl, "error (ignored): %1%", e.what());
|
||||
}
|
||||
} catch (...) { }
|
||||
}
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -202,4 +202,10 @@ public:
|
|||
}
|
||||
};
|
||||
|
||||
/**
|
||||
* Exception handling in destructors: print an error message, then
|
||||
* ignore the exception.
|
||||
*/
|
||||
void ignoreException(Verbosity lvl = lvlError);
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
#include "experimental-features.hh"
|
||||
// Required for instances of to_json and from_json for ExperimentalFeature
|
||||
#include "experimental-features-json.hh"
|
||||
#include "util.hh"
|
||||
#include "strings.hh"
|
||||
|
||||
#include "nlohmann/json.hpp"
|
||||
|
||||
|
|
|
|||
252
src/libutil/file-descriptor.cc
Normal file
252
src/libutil/file-descriptor.cc
Normal file
|
|
@ -0,0 +1,252 @@
|
|||
#include "file-system.hh"
|
||||
#include "finally.hh"
|
||||
#include "logging.hh"
|
||||
#include "serialise.hh"
|
||||
#include "signals.hh"
|
||||
|
||||
#include <fcntl.h>
|
||||
#include <unistd.h>
|
||||
|
||||
namespace nix {
|
||||
|
||||
std::string readFile(int fd)
|
||||
{
|
||||
struct stat st;
|
||||
if (fstat(fd, &st) == -1)
|
||||
throw SysError("statting file");
|
||||
|
||||
return drainFD(fd, true, st.st_size);
|
||||
}
|
||||
|
||||
|
||||
std::string readLine(int fd)
|
||||
{
|
||||
std::string s;
|
||||
while (1) {
|
||||
checkInterrupt();
|
||||
char ch;
|
||||
// FIXME: inefficient
|
||||
ssize_t rd = read(fd, &ch, 1);
|
||||
if (rd == -1) {
|
||||
if (errno != EINTR)
|
||||
throw SysError("reading a line");
|
||||
} else if (rd == 0)
|
||||
throw EndOfFile("unexpected EOF reading a line");
|
||||
else {
|
||||
if (ch == '\n') return s;
|
||||
s += ch;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void writeLine(int fd, std::string s)
|
||||
{
|
||||
s += '\n';
|
||||
writeFull(fd, s);
|
||||
}
|
||||
|
||||
|
||||
void readFull(int fd, char * buf, size_t count)
|
||||
{
|
||||
while (count) {
|
||||
checkInterrupt();
|
||||
ssize_t res = read(fd, buf, count);
|
||||
if (res == -1) {
|
||||
if (errno == EINTR) continue;
|
||||
throw SysError("reading from file");
|
||||
}
|
||||
if (res == 0) throw EndOfFile("unexpected end-of-file");
|
||||
count -= res;
|
||||
buf += res;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void writeFull(int fd, std::string_view s, bool allowInterrupts)
|
||||
{
|
||||
while (!s.empty()) {
|
||||
if (allowInterrupts) checkInterrupt();
|
||||
ssize_t res = write(fd, s.data(), s.size());
|
||||
if (res == -1 && errno != EINTR)
|
||||
throw SysError("writing to file");
|
||||
if (res > 0)
|
||||
s.remove_prefix(res);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
std::string drainFD(int fd, bool block, const size_t reserveSize)
|
||||
{
|
||||
// the parser needs two extra bytes to append terminating characters, other users will
|
||||
// not care very much about the extra memory.
|
||||
StringSink sink(reserveSize + 2);
|
||||
drainFD(fd, sink, block);
|
||||
return std::move(sink.s);
|
||||
}
|
||||
|
||||
|
||||
void drainFD(int fd, Sink & sink, bool block)
|
||||
{
|
||||
// silence GCC maybe-uninitialized warning in finally
|
||||
int saved = 0;
|
||||
|
||||
if (!block) {
|
||||
saved = fcntl(fd, F_GETFL);
|
||||
if (fcntl(fd, F_SETFL, saved | O_NONBLOCK) == -1)
|
||||
throw SysError("making file descriptor non-blocking");
|
||||
}
|
||||
|
||||
Finally finally([&]() {
|
||||
if (!block) {
|
||||
if (fcntl(fd, F_SETFL, saved) == -1)
|
||||
throw SysError("making file descriptor blocking");
|
||||
}
|
||||
});
|
||||
|
||||
std::array<unsigned char, 64 * 1024> buf;
|
||||
while (1) {
|
||||
checkInterrupt();
|
||||
ssize_t rd = read(fd, buf.data(), buf.size());
|
||||
if (rd == -1) {
|
||||
if (!block && (errno == EAGAIN || errno == EWOULDBLOCK))
|
||||
break;
|
||||
if (errno != EINTR)
|
||||
throw SysError("reading from file");
|
||||
}
|
||||
else if (rd == 0) break;
|
||||
else sink({(char *) buf.data(), (size_t) rd});
|
||||
}
|
||||
}
|
||||
|
||||
AutoCloseFD::AutoCloseFD() : fd{-1} {}
|
||||
|
||||
|
||||
AutoCloseFD::AutoCloseFD(int fd) : fd{fd} {}
|
||||
|
||||
|
||||
AutoCloseFD::AutoCloseFD(AutoCloseFD && that) : fd{that.fd}
|
||||
{
|
||||
that.fd = -1;
|
||||
}
|
||||
|
||||
|
||||
AutoCloseFD & AutoCloseFD::operator =(AutoCloseFD && that)
|
||||
{
|
||||
close();
|
||||
fd = that.fd;
|
||||
that.fd = -1;
|
||||
return *this;
|
||||
}
|
||||
|
||||
|
||||
AutoCloseFD::~AutoCloseFD()
|
||||
{
|
||||
try {
|
||||
close();
|
||||
} catch (...) {
|
||||
ignoreException();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int AutoCloseFD::get() const
|
||||
{
|
||||
return fd;
|
||||
}
|
||||
|
||||
|
||||
void AutoCloseFD::close()
|
||||
{
|
||||
if (fd != -1) {
|
||||
if (::close(fd) == -1)
|
||||
/* This should never happen. */
|
||||
throw SysError("closing file descriptor %1%", fd);
|
||||
fd = -1;
|
||||
}
|
||||
}
|
||||
|
||||
void AutoCloseFD::fsync()
|
||||
{
|
||||
if (fd != -1) {
|
||||
int result;
|
||||
#if __APPLE__
|
||||
result = ::fcntl(fd, F_FULLFSYNC);
|
||||
#else
|
||||
result = ::fsync(fd);
|
||||
#endif
|
||||
if (result == -1)
|
||||
throw SysError("fsync file descriptor %1%", fd);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
AutoCloseFD::operator bool() const
|
||||
{
|
||||
return fd != -1;
|
||||
}
|
||||
|
||||
|
||||
int AutoCloseFD::release()
|
||||
{
|
||||
int oldFD = fd;
|
||||
fd = -1;
|
||||
return oldFD;
|
||||
}
|
||||
|
||||
|
||||
void Pipe::create()
|
||||
{
|
||||
int fds[2];
|
||||
#if HAVE_PIPE2
|
||||
if (pipe2(fds, O_CLOEXEC) != 0) throw SysError("creating pipe");
|
||||
#else
|
||||
if (pipe(fds) != 0) throw SysError("creating pipe");
|
||||
closeOnExec(fds[0]);
|
||||
closeOnExec(fds[1]);
|
||||
#endif
|
||||
readSide = AutoCloseFD{fds[0]};
|
||||
writeSide = AutoCloseFD{fds[1]};
|
||||
}
|
||||
|
||||
|
||||
void Pipe::close()
|
||||
{
|
||||
readSide.close();
|
||||
writeSide.close();
|
||||
}
|
||||
|
||||
|
||||
void closeMostFDs(const std::set<int> & exceptions)
|
||||
{
|
||||
#if __linux__
|
||||
try {
|
||||
for (auto & s : readDirectory("/proc/self/fd")) {
|
||||
auto fd = std::stoi(s.name);
|
||||
if (!exceptions.count(fd)) {
|
||||
debug("closing leaked FD %d", fd);
|
||||
close(fd);
|
||||
}
|
||||
}
|
||||
return;
|
||||
} catch (SysError &) {
|
||||
}
|
||||
#endif
|
||||
|
||||
int maxFD = 0;
|
||||
maxFD = sysconf(_SC_OPEN_MAX);
|
||||
for (int fd = 0; fd < maxFD; ++fd)
|
||||
if (!exceptions.count(fd))
|
||||
close(fd); /* ignore result */
|
||||
}
|
||||
|
||||
|
||||
void closeOnExec(int fd)
|
||||
{
|
||||
int prev;
|
||||
if ((prev = fcntl(fd, F_GETFD, 0)) == -1 ||
|
||||
fcntl(fd, F_SETFD, prev | FD_CLOEXEC) == -1)
|
||||
throw SysError("setting close-on-exec flag");
|
||||
}
|
||||
|
||||
}
|
||||
80
src/libutil/file-descriptor.hh
Normal file
80
src/libutil/file-descriptor.hh
Normal file
|
|
@ -0,0 +1,80 @@
|
|||
#pragma once
|
||||
///@file
|
||||
|
||||
#include "error.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
struct Sink;
|
||||
struct Source;
|
||||
|
||||
/**
|
||||
* Read a line from a file descriptor.
|
||||
*/
|
||||
std::string readLine(int fd);
|
||||
|
||||
/**
|
||||
* Write a line to a file descriptor.
|
||||
*/
|
||||
void writeLine(int fd, std::string s);
|
||||
|
||||
/**
|
||||
* Read the contents of a file into a string.
|
||||
*/
|
||||
std::string readFile(int fd);
|
||||
|
||||
/**
|
||||
* Wrappers arount read()/write() that read/write exactly the
|
||||
* requested number of bytes.
|
||||
*/
|
||||
void readFull(int fd, char * buf, size_t count);
|
||||
void writeFull(int fd, std::string_view s, bool allowInterrupts = true);
|
||||
|
||||
/**
|
||||
* Read a file descriptor until EOF occurs.
|
||||
*/
|
||||
std::string drainFD(int fd, bool block = true, const size_t reserveSize=0);
|
||||
|
||||
void drainFD(int fd, Sink & sink, bool block = true);
|
||||
|
||||
class AutoCloseFD
|
||||
{
|
||||
int fd;
|
||||
public:
|
||||
AutoCloseFD();
|
||||
explicit AutoCloseFD(int fd);
|
||||
AutoCloseFD(const AutoCloseFD & fd) = delete;
|
||||
AutoCloseFD(AutoCloseFD&& fd);
|
||||
~AutoCloseFD();
|
||||
AutoCloseFD& operator =(const AutoCloseFD & fd) = delete;
|
||||
AutoCloseFD& operator =(AutoCloseFD&& fd) noexcept(false);
|
||||
int get() const;
|
||||
explicit operator bool() const;
|
||||
int release();
|
||||
void close();
|
||||
void fsync();
|
||||
void reset() { *this = {}; }
|
||||
};
|
||||
|
||||
class Pipe
|
||||
{
|
||||
public:
|
||||
AutoCloseFD readSide, writeSide;
|
||||
void create();
|
||||
void close();
|
||||
};
|
||||
|
||||
/**
|
||||
* Close all file descriptors except those listed in the given set.
|
||||
* Good practice in child processes.
|
||||
*/
|
||||
void closeMostFDs(const std::set<int> & exceptions);
|
||||
|
||||
/**
|
||||
* Set the close-on-exec flag for the given file descriptor.
|
||||
*/
|
||||
void closeOnExec(int fd);
|
||||
|
||||
MakeError(EndOfFile, Error);
|
||||
|
||||
}
|
||||
670
src/libutil/file-system.cc
Normal file
670
src/libutil/file-system.cc
Normal file
|
|
@ -0,0 +1,670 @@
|
|||
#include <sys/time.h>
|
||||
#include <filesystem>
|
||||
#include <atomic>
|
||||
|
||||
#include "environment-variables.hh"
|
||||
#include "file-descriptor.hh"
|
||||
#include "file-system.hh"
|
||||
#include "finally.hh"
|
||||
#include "logging.hh"
|
||||
#include "serialise.hh"
|
||||
#include "signals.hh"
|
||||
#include "types.hh"
|
||||
#include "users.hh"
|
||||
|
||||
namespace fs = std::filesystem;
|
||||
|
||||
namespace nix {
|
||||
|
||||
Path absPath(Path path, std::optional<PathView> dir, bool resolveSymlinks)
|
||||
{
|
||||
if (path.empty() || path[0] != '/') {
|
||||
if (!dir) {
|
||||
#ifdef __GNU__
|
||||
/* GNU (aka. GNU/Hurd) doesn't have any limitation on path
|
||||
lengths and doesn't define `PATH_MAX'. */
|
||||
char *buf = getcwd(NULL, 0);
|
||||
if (buf == NULL)
|
||||
#else
|
||||
char buf[PATH_MAX];
|
||||
if (!getcwd(buf, sizeof(buf)))
|
||||
#endif
|
||||
throw SysError("cannot get cwd");
|
||||
path = concatStrings(buf, "/", path);
|
||||
#ifdef __GNU__
|
||||
free(buf);
|
||||
#endif
|
||||
} else
|
||||
path = concatStrings(*dir, "/", path);
|
||||
}
|
||||
return canonPath(path, resolveSymlinks);
|
||||
}
|
||||
|
||||
|
||||
Path canonPath(PathView path, bool resolveSymlinks)
|
||||
{
|
||||
assert(path != "");
|
||||
|
||||
std::string s;
|
||||
s.reserve(256);
|
||||
|
||||
if (path[0] != '/')
|
||||
throw Error("not an absolute path: '%1%'", path);
|
||||
|
||||
std::string temp;
|
||||
|
||||
/* Count the number of times we follow a symlink and stop at some
|
||||
arbitrary (but high) limit to prevent infinite loops. */
|
||||
unsigned int followCount = 0, maxFollow = 1024;
|
||||
|
||||
while (1) {
|
||||
|
||||
/* Skip slashes. */
|
||||
while (!path.empty() && path[0] == '/') path.remove_prefix(1);
|
||||
if (path.empty()) break;
|
||||
|
||||
/* Ignore `.'. */
|
||||
if (path == "." || path.substr(0, 2) == "./")
|
||||
path.remove_prefix(1);
|
||||
|
||||
/* If `..', delete the last component. */
|
||||
else if (path == ".." || path.substr(0, 3) == "../")
|
||||
{
|
||||
if (!s.empty()) s.erase(s.rfind('/'));
|
||||
path.remove_prefix(2);
|
||||
}
|
||||
|
||||
/* Normal component; copy it. */
|
||||
else {
|
||||
s += '/';
|
||||
if (const auto slash = path.find('/'); slash == std::string::npos) {
|
||||
s += path;
|
||||
path = {};
|
||||
} else {
|
||||
s += path.substr(0, slash);
|
||||
path = path.substr(slash);
|
||||
}
|
||||
|
||||
/* If s points to a symlink, resolve it and continue from there */
|
||||
if (resolveSymlinks && isLink(s)) {
|
||||
if (++followCount >= maxFollow)
|
||||
throw Error("infinite symlink recursion in path '%1%'", path);
|
||||
temp = concatStrings(readLink(s), path);
|
||||
path = temp;
|
||||
if (!temp.empty() && temp[0] == '/') {
|
||||
s.clear(); /* restart for symlinks pointing to absolute path */
|
||||
} else {
|
||||
s = dirOf(s);
|
||||
if (s == "/") { // we don’t want trailing slashes here, which dirOf only produces if s = /
|
||||
s.clear();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return s.empty() ? "/" : std::move(s);
|
||||
}
|
||||
|
||||
void chmodPath(const Path & path, mode_t mode)
|
||||
{
|
||||
if (chmod(path.c_str(), mode) == -1)
|
||||
throw SysError("setting permissions on '%s'", path);
|
||||
}
|
||||
|
||||
Path dirOf(const PathView path)
|
||||
{
|
||||
Path::size_type pos = path.rfind('/');
|
||||
if (pos == std::string::npos)
|
||||
return ".";
|
||||
return pos == 0 ? "/" : Path(path, 0, pos);
|
||||
}
|
||||
|
||||
|
||||
std::string_view baseNameOf(std::string_view path)
|
||||
{
|
||||
if (path.empty())
|
||||
return "";
|
||||
|
||||
auto last = path.size() - 1;
|
||||
if (path[last] == '/' && last > 0)
|
||||
last -= 1;
|
||||
|
||||
auto pos = path.rfind('/', last);
|
||||
if (pos == std::string::npos)
|
||||
pos = 0;
|
||||
else
|
||||
pos += 1;
|
||||
|
||||
return path.substr(pos, last - pos + 1);
|
||||
}
|
||||
|
||||
|
||||
std::string expandTilde(std::string_view path)
|
||||
{
|
||||
// TODO: expand ~user ?
|
||||
auto tilde = path.substr(0, 2);
|
||||
if (tilde == "~/" || tilde == "~")
|
||||
return getHome() + std::string(path.substr(1));
|
||||
else
|
||||
return std::string(path);
|
||||
}
|
||||
|
||||
|
||||
bool isInDir(std::string_view path, std::string_view dir)
|
||||
{
|
||||
return path.substr(0, 1) == "/"
|
||||
&& path.substr(0, dir.size()) == dir
|
||||
&& path.size() >= dir.size() + 2
|
||||
&& path[dir.size()] == '/';
|
||||
}
|
||||
|
||||
|
||||
bool isDirOrInDir(std::string_view path, std::string_view dir)
|
||||
{
|
||||
return path == dir || isInDir(path, dir);
|
||||
}
|
||||
|
||||
|
||||
struct stat stat(const Path & path)
|
||||
{
|
||||
struct stat st;
|
||||
if (stat(path.c_str(), &st))
|
||||
throw SysError("getting status of '%1%'", path);
|
||||
return st;
|
||||
}
|
||||
|
||||
|
||||
struct stat lstat(const Path & path)
|
||||
{
|
||||
struct stat st;
|
||||
if (lstat(path.c_str(), &st))
|
||||
throw SysError("getting status of '%1%'", path);
|
||||
return st;
|
||||
}
|
||||
|
||||
std::optional<struct stat> maybeLstat(const Path & path)
|
||||
{
|
||||
std::optional<struct stat> st{std::in_place};
|
||||
if (lstat(path.c_str(), &*st))
|
||||
{
|
||||
if (errno == ENOENT || errno == ENOTDIR)
|
||||
st.reset();
|
||||
else
|
||||
throw SysError("getting status of '%s'", path);
|
||||
}
|
||||
return st;
|
||||
}
|
||||
|
||||
bool pathExists(const Path & path)
|
||||
{
|
||||
return maybeLstat(path).has_value();
|
||||
}
|
||||
|
||||
bool pathAccessible(const Path & path)
|
||||
{
|
||||
try {
|
||||
return pathExists(path);
|
||||
} catch (SysError & e) {
|
||||
// swallow EPERM
|
||||
if (e.errNo == EPERM) return false;
|
||||
throw;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Path readLink(const Path & path)
|
||||
{
|
||||
checkInterrupt();
|
||||
std::vector<char> buf;
|
||||
for (ssize_t bufSize = PATH_MAX/4; true; bufSize += bufSize/2) {
|
||||
buf.resize(bufSize);
|
||||
ssize_t rlSize = readlink(path.c_str(), buf.data(), bufSize);
|
||||
if (rlSize == -1)
|
||||
if (errno == EINVAL)
|
||||
throw Error("'%1%' is not a symlink", path);
|
||||
else
|
||||
throw SysError("reading symbolic link '%1%'", path);
|
||||
else if (rlSize < bufSize)
|
||||
return std::string(buf.data(), rlSize);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
bool isLink(const Path & path)
|
||||
{
|
||||
struct stat st = lstat(path);
|
||||
return S_ISLNK(st.st_mode);
|
||||
}
|
||||
|
||||
|
||||
DirEntries readDirectory(DIR *dir, const Path & path)
|
||||
{
|
||||
DirEntries entries;
|
||||
entries.reserve(64);
|
||||
|
||||
struct dirent * dirent;
|
||||
while (errno = 0, dirent = readdir(dir)) { /* sic */
|
||||
checkInterrupt();
|
||||
std::string name = dirent->d_name;
|
||||
if (name == "." || name == "..") continue;
|
||||
entries.emplace_back(name, dirent->d_ino,
|
||||
#ifdef HAVE_STRUCT_DIRENT_D_TYPE
|
||||
dirent->d_type
|
||||
#else
|
||||
DT_UNKNOWN
|
||||
#endif
|
||||
);
|
||||
}
|
||||
if (errno) throw SysError("reading directory '%1%'", path);
|
||||
|
||||
return entries;
|
||||
}
|
||||
|
||||
DirEntries readDirectory(const Path & path)
|
||||
{
|
||||
AutoCloseDir dir(opendir(path.c_str()));
|
||||
if (!dir) throw SysError("opening directory '%1%'", path);
|
||||
|
||||
return readDirectory(dir.get(), path);
|
||||
}
|
||||
|
||||
|
||||
unsigned char getFileType(const Path & path)
|
||||
{
|
||||
struct stat st = lstat(path);
|
||||
if (S_ISDIR(st.st_mode)) return DT_DIR;
|
||||
if (S_ISLNK(st.st_mode)) return DT_LNK;
|
||||
if (S_ISREG(st.st_mode)) return DT_REG;
|
||||
return DT_UNKNOWN;
|
||||
}
|
||||
|
||||
|
||||
std::string readFile(const Path & path)
|
||||
{
|
||||
AutoCloseFD fd{open(path.c_str(), O_RDONLY | O_CLOEXEC)};
|
||||
if (!fd)
|
||||
throw SysError("opening file '%1%'", path);
|
||||
return readFile(fd.get());
|
||||
}
|
||||
|
||||
|
||||
void readFile(const Path & path, Sink & sink)
|
||||
{
|
||||
AutoCloseFD fd{open(path.c_str(), O_RDONLY | O_CLOEXEC)};
|
||||
if (!fd)
|
||||
throw SysError("opening file '%s'", path);
|
||||
drainFD(fd.get(), sink);
|
||||
}
|
||||
|
||||
|
||||
void writeFile(const Path & path, std::string_view s, mode_t mode, bool sync)
|
||||
{
|
||||
AutoCloseFD fd{open(path.c_str(), O_WRONLY | O_TRUNC | O_CREAT | O_CLOEXEC, mode)};
|
||||
if (!fd)
|
||||
throw SysError("opening file '%1%'", path);
|
||||
try {
|
||||
writeFull(fd.get(), s);
|
||||
} catch (Error & e) {
|
||||
e.addTrace({}, "writing file '%1%'", path);
|
||||
throw;
|
||||
}
|
||||
if (sync)
|
||||
fd.fsync();
|
||||
// Explicitly close to make sure exceptions are propagated.
|
||||
fd.close();
|
||||
if (sync)
|
||||
syncParent(path);
|
||||
}
|
||||
|
||||
|
||||
void writeFile(const Path & path, Source & source, mode_t mode, bool sync)
|
||||
{
|
||||
AutoCloseFD fd{open(path.c_str(), O_WRONLY | O_TRUNC | O_CREAT | O_CLOEXEC, mode)};
|
||||
if (!fd)
|
||||
throw SysError("opening file '%1%'", path);
|
||||
|
||||
std::vector<char> buf(64 * 1024);
|
||||
|
||||
try {
|
||||
while (true) {
|
||||
try {
|
||||
auto n = source.read(buf.data(), buf.size());
|
||||
writeFull(fd.get(), {buf.data(), n});
|
||||
} catch (EndOfFile &) { break; }
|
||||
}
|
||||
} catch (Error & e) {
|
||||
e.addTrace({}, "writing file '%1%'", path);
|
||||
throw;
|
||||
}
|
||||
if (sync)
|
||||
fd.fsync();
|
||||
// Explicitly close to make sure exceptions are propagated.
|
||||
fd.close();
|
||||
if (sync)
|
||||
syncParent(path);
|
||||
}
|
||||
|
||||
void syncParent(const Path & path)
|
||||
{
|
||||
AutoCloseFD fd{open(dirOf(path).c_str(), O_RDONLY, 0)};
|
||||
if (!fd)
|
||||
throw SysError("opening file '%1%'", path);
|
||||
fd.fsync();
|
||||
}
|
||||
|
||||
static void _deletePath(int parentfd, const Path & path, uint64_t & bytesFreed)
|
||||
{
|
||||
checkInterrupt();
|
||||
|
||||
std::string name(baseNameOf(path));
|
||||
|
||||
struct stat st;
|
||||
if (fstatat(parentfd, name.c_str(), &st, AT_SYMLINK_NOFOLLOW) == -1) {
|
||||
if (errno == ENOENT) return;
|
||||
throw SysError("getting status of '%1%'", path);
|
||||
}
|
||||
|
||||
if (!S_ISDIR(st.st_mode)) {
|
||||
/* We are about to delete a file. Will it likely free space? */
|
||||
|
||||
switch (st.st_nlink) {
|
||||
/* Yes: last link. */
|
||||
case 1:
|
||||
bytesFreed += st.st_size;
|
||||
break;
|
||||
/* Maybe: yes, if 'auto-optimise-store' or manual optimisation
|
||||
was performed. Instead of checking for real let's assume
|
||||
it's an optimised file and space will be freed.
|
||||
|
||||
In worst case we will double count on freed space for files
|
||||
with exactly two hardlinks for unoptimised packages.
|
||||
*/
|
||||
case 2:
|
||||
bytesFreed += st.st_size;
|
||||
break;
|
||||
/* No: 3+ links. */
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (S_ISDIR(st.st_mode)) {
|
||||
/* Make the directory accessible. */
|
||||
const auto PERM_MASK = S_IRUSR | S_IWUSR | S_IXUSR;
|
||||
if ((st.st_mode & PERM_MASK) != PERM_MASK) {
|
||||
if (fchmodat(parentfd, name.c_str(), st.st_mode | PERM_MASK, 0) == -1)
|
||||
throw SysError("chmod '%1%'", path);
|
||||
}
|
||||
|
||||
int fd = openat(parentfd, path.c_str(), O_RDONLY);
|
||||
if (fd == -1)
|
||||
throw SysError("opening directory '%1%'", path);
|
||||
AutoCloseDir dir(fdopendir(fd));
|
||||
if (!dir)
|
||||
throw SysError("opening directory '%1%'", path);
|
||||
for (auto & i : readDirectory(dir.get(), path))
|
||||
_deletePath(dirfd(dir.get()), path + "/" + i.name, bytesFreed);
|
||||
}
|
||||
|
||||
int flags = S_ISDIR(st.st_mode) ? AT_REMOVEDIR : 0;
|
||||
if (unlinkat(parentfd, name.c_str(), flags) == -1) {
|
||||
if (errno == ENOENT) return;
|
||||
throw SysError("cannot unlink '%1%'", path);
|
||||
}
|
||||
}
|
||||
|
||||
static void _deletePath(const Path & path, uint64_t & bytesFreed)
|
||||
{
|
||||
Path dir = dirOf(path);
|
||||
if (dir == "")
|
||||
dir = "/";
|
||||
|
||||
AutoCloseFD dirfd{open(dir.c_str(), O_RDONLY)};
|
||||
if (!dirfd) {
|
||||
if (errno == ENOENT) return;
|
||||
throw SysError("opening directory '%1%'", path);
|
||||
}
|
||||
|
||||
_deletePath(dirfd.get(), path, bytesFreed);
|
||||
}
|
||||
|
||||
|
||||
void deletePath(const Path & path)
|
||||
{
|
||||
uint64_t dummy;
|
||||
deletePath(path, dummy);
|
||||
}
|
||||
|
||||
|
||||
void deletePath(const Path & path, uint64_t & bytesFreed)
|
||||
{
|
||||
//Activity act(*logger, lvlDebug, "recursively deleting path '%1%'", path);
|
||||
bytesFreed = 0;
|
||||
_deletePath(path, bytesFreed);
|
||||
}
|
||||
|
||||
Paths createDirs(const Path & path)
|
||||
{
|
||||
Paths created;
|
||||
if (path == "/") return created;
|
||||
|
||||
struct stat st;
|
||||
if (lstat(path.c_str(), &st) == -1) {
|
||||
created = createDirs(dirOf(path));
|
||||
if (mkdir(path.c_str(), 0777) == -1 && errno != EEXIST)
|
||||
throw SysError("creating directory '%1%'", path);
|
||||
st = lstat(path);
|
||||
created.push_back(path);
|
||||
}
|
||||
|
||||
if (S_ISLNK(st.st_mode) && stat(path.c_str(), &st) == -1)
|
||||
throw SysError("statting symlink '%1%'", path);
|
||||
|
||||
if (!S_ISDIR(st.st_mode)) throw Error("'%1%' is not a directory", path);
|
||||
|
||||
return created;
|
||||
}
|
||||
|
||||
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
|
||||
AutoDelete::AutoDelete() : del{false} {}
|
||||
|
||||
AutoDelete::AutoDelete(const std::string & p, bool recursive) : path(p)
|
||||
{
|
||||
del = true;
|
||||
this->recursive = recursive;
|
||||
}
|
||||
|
||||
AutoDelete::~AutoDelete()
|
||||
{
|
||||
try {
|
||||
if (del) {
|
||||
if (recursive)
|
||||
deletePath(path);
|
||||
else {
|
||||
if (remove(path.c_str()) == -1)
|
||||
throw SysError("cannot unlink '%1%'", path);
|
||||
}
|
||||
}
|
||||
} catch (...) {
|
||||
ignoreException();
|
||||
}
|
||||
}
|
||||
|
||||
void AutoDelete::cancel()
|
||||
{
|
||||
del = false;
|
||||
}
|
||||
|
||||
void AutoDelete::reset(const Path & p, bool recursive) {
|
||||
path = p;
|
||||
this->recursive = recursive;
|
||||
del = true;
|
||||
}
|
||||
|
||||
//////////////////////////////////////////////////////////////////////
|
||||
|
||||
static Path tempName(Path tmpRoot, const Path & prefix, bool includePid,
|
||||
std::atomic<unsigned int> & counter)
|
||||
{
|
||||
tmpRoot = canonPath(tmpRoot.empty() ? getEnv("TMPDIR").value_or("/tmp") : tmpRoot, true);
|
||||
if (includePid)
|
||||
return fmt("%1%/%2%-%3%-%4%", tmpRoot, prefix, getpid(), counter++);
|
||||
else
|
||||
return fmt("%1%/%2%-%3%", tmpRoot, prefix, counter++);
|
||||
}
|
||||
|
||||
Path createTempDir(const Path & tmpRoot, const Path & prefix,
|
||||
bool includePid, bool useGlobalCounter, mode_t mode)
|
||||
{
|
||||
static std::atomic<unsigned int> globalCounter = 0;
|
||||
std::atomic<unsigned int> localCounter = 0;
|
||||
auto & counter(useGlobalCounter ? globalCounter : localCounter);
|
||||
|
||||
while (1) {
|
||||
checkInterrupt();
|
||||
Path tmpDir = tempName(tmpRoot, prefix, includePid, counter);
|
||||
if (mkdir(tmpDir.c_str(), mode) == 0) {
|
||||
#if __FreeBSD__
|
||||
/* Explicitly set the group of the directory. This is to
|
||||
work around around problems caused by BSD's group
|
||||
ownership semantics (directories inherit the group of
|
||||
the parent). For instance, the group of /tmp on
|
||||
FreeBSD is "wheel", so all directories created in /tmp
|
||||
will be owned by "wheel"; but if the user is not in
|
||||
"wheel", then "tar" will fail to unpack archives that
|
||||
have the setgid bit set on directories. */
|
||||
if (chown(tmpDir.c_str(), (uid_t) -1, getegid()) != 0)
|
||||
throw SysError("setting group of directory '%1%'", tmpDir);
|
||||
#endif
|
||||
return tmpDir;
|
||||
}
|
||||
if (errno != EEXIST)
|
||||
throw SysError("creating directory '%1%'", tmpDir);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
std::pair<AutoCloseFD, Path> createTempFile(const Path & prefix)
|
||||
{
|
||||
Path tmpl(getEnv("TMPDIR").value_or("/tmp") + "/" + prefix + ".XXXXXX");
|
||||
// Strictly speaking, this is UB, but who cares...
|
||||
// FIXME: use O_TMPFILE.
|
||||
AutoCloseFD fd(mkstemp((char *) tmpl.c_str()));
|
||||
if (!fd)
|
||||
throw SysError("creating temporary file '%s'", tmpl);
|
||||
closeOnExec(fd.get());
|
||||
return {std::move(fd), tmpl};
|
||||
}
|
||||
|
||||
void createSymlink(const Path & target, const Path & link)
|
||||
{
|
||||
if (symlink(target.c_str(), link.c_str()))
|
||||
throw SysError("creating symlink from '%1%' to '%2%'", link, target);
|
||||
}
|
||||
|
||||
void replaceSymlink(const Path & target, const Path & link)
|
||||
{
|
||||
for (unsigned int n = 0; true; n++) {
|
||||
Path tmp = canonPath(fmt("%s/.%d_%s", dirOf(link), n, baseNameOf(link)));
|
||||
|
||||
try {
|
||||
createSymlink(target, tmp);
|
||||
} catch (SysError & e) {
|
||||
if (e.errNo == EEXIST) continue;
|
||||
throw;
|
||||
}
|
||||
|
||||
renameFile(tmp, link);
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void setWriteTime(const fs::path & p, const struct stat & st)
|
||||
{
|
||||
struct timeval times[2];
|
||||
times[0] = {
|
||||
.tv_sec = st.st_atime,
|
||||
.tv_usec = 0,
|
||||
};
|
||||
times[1] = {
|
||||
.tv_sec = st.st_mtime,
|
||||
.tv_usec = 0,
|
||||
};
|
||||
if (lutimes(p.c_str(), times) != 0)
|
||||
throw SysError("changing modification time of '%s'", p);
|
||||
}
|
||||
|
||||
void copy(const fs::directory_entry & from, const fs::path & to, CopyFileFlags flags)
|
||||
{
|
||||
// TODO: Rewrite the `is_*` to use `symlink_status()`
|
||||
auto statOfFrom = lstat(from.path().c_str());
|
||||
auto fromStatus = from.symlink_status();
|
||||
|
||||
// Mark the directory as writable so that we can delete its children
|
||||
if (flags.deleteAfter && fs::is_directory(fromStatus)) {
|
||||
fs::permissions(from.path(), fs::perms::owner_write, fs::perm_options::add | fs::perm_options::nofollow);
|
||||
}
|
||||
|
||||
|
||||
if (fs::is_symlink(fromStatus) || fs::is_regular_file(fromStatus)) {
|
||||
auto opts = fs::copy_options::overwrite_existing;
|
||||
|
||||
if (!flags.followSymlinks) {
|
||||
opts |= fs::copy_options::copy_symlinks;
|
||||
}
|
||||
|
||||
fs::copy(from.path(), to, opts);
|
||||
} else if (fs::is_directory(fromStatus)) {
|
||||
fs::create_directory(to);
|
||||
for (auto & entry : fs::directory_iterator(from.path())) {
|
||||
copy(entry, to / entry.path().filename(), flags);
|
||||
}
|
||||
} else {
|
||||
throw Error("file '%s' has an unsupported type", from.path());
|
||||
}
|
||||
|
||||
setWriteTime(to, statOfFrom);
|
||||
if (flags.deleteAfter) {
|
||||
if (!fs::is_symlink(fromStatus))
|
||||
fs::permissions(from.path(), fs::perms::owner_write, fs::perm_options::add | fs::perm_options::nofollow);
|
||||
fs::remove(from.path());
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void copyFile(const Path & oldPath, const Path & newPath, CopyFileFlags flags)
|
||||
{
|
||||
return copy(fs::directory_entry(fs::path(oldPath)), fs::path(newPath), flags);
|
||||
}
|
||||
|
||||
void renameFile(const Path & oldName, const Path & newName)
|
||||
{
|
||||
fs::rename(oldName, newName);
|
||||
}
|
||||
|
||||
void moveFile(const Path & oldName, const Path & newName)
|
||||
{
|
||||
try {
|
||||
renameFile(oldName, newName);
|
||||
} catch (fs::filesystem_error & e) {
|
||||
auto oldPath = fs::path(oldName);
|
||||
auto newPath = fs::path(newName);
|
||||
// For the move to be as atomic as possible, copy to a temporary
|
||||
// directory
|
||||
fs::path temp = createTempDir(newPath.parent_path(), "rename-tmp");
|
||||
Finally removeTemp = [&]() { fs::remove(temp); };
|
||||
auto tempCopyTarget = temp / "copy-target";
|
||||
if (e.code().value() == EXDEV) {
|
||||
fs::remove(newPath);
|
||||
warn("Can’t rename %s as %s, copying instead", oldName, newName);
|
||||
copy(fs::directory_entry(oldPath), tempCopyTarget, { .deleteAfter = true });
|
||||
renameFile(tempCopyTarget, newPath);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
269
src/libutil/file-system.hh
Normal file
269
src/libutil/file-system.hh
Normal file
|
|
@ -0,0 +1,269 @@
|
|||
#pragma once
|
||||
/**
|
||||
* @file
|
||||
*
|
||||
* Utiltities for working with the file sytem and file paths.
|
||||
*/
|
||||
|
||||
#include "types.hh"
|
||||
#include "file-descriptor.hh"
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <dirent.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <boost/lexical_cast.hpp>
|
||||
|
||||
#include <functional>
|
||||
#include <optional>
|
||||
|
||||
#ifndef HAVE_STRUCT_DIRENT_D_TYPE
|
||||
#define DT_UNKNOWN 0
|
||||
#define DT_REG 1
|
||||
#define DT_LNK 2
|
||||
#define DT_DIR 3
|
||||
#endif
|
||||
|
||||
namespace nix {
|
||||
|
||||
struct Sink;
|
||||
struct Source;
|
||||
|
||||
/**
|
||||
* @return An absolutized path, resolving paths relative to the
|
||||
* specified directory, or the current directory otherwise. The path
|
||||
* is also canonicalised.
|
||||
*/
|
||||
Path absPath(Path path,
|
||||
std::optional<PathView> dir = {},
|
||||
bool resolveSymlinks = false);
|
||||
|
||||
/**
|
||||
* Canonicalise a path by removing all `.` or `..` components and
|
||||
* double or trailing slashes. Optionally resolves all symlink
|
||||
* components such that each component of the resulting path is *not*
|
||||
* a symbolic link.
|
||||
*/
|
||||
Path canonPath(PathView path, bool resolveSymlinks = false);
|
||||
|
||||
/**
|
||||
* Change the permissions of a path
|
||||
* Not called `chmod` as it shadows and could be confused with
|
||||
* `int chmod(char *, mode_t)`, which does not handle errors
|
||||
*/
|
||||
void chmodPath(const Path & path, mode_t mode);
|
||||
|
||||
/**
|
||||
* @return The directory part of the given canonical path, i.e.,
|
||||
* everything before the final `/`. If the path is the root or an
|
||||
* immediate child thereof (e.g., `/foo`), this means `/`
|
||||
* is returned.
|
||||
*/
|
||||
Path dirOf(const PathView path);
|
||||
|
||||
/**
|
||||
* @return the base name of the given canonical path, i.e., everything
|
||||
* following the final `/` (trailing slashes are removed).
|
||||
*/
|
||||
std::string_view baseNameOf(std::string_view path);
|
||||
|
||||
/**
|
||||
* Perform tilde expansion on a path.
|
||||
*/
|
||||
std::string expandTilde(std::string_view path);
|
||||
|
||||
/**
|
||||
* Check whether 'path' is a descendant of 'dir'. Both paths must be
|
||||
* canonicalized.
|
||||
*/
|
||||
bool isInDir(std::string_view path, std::string_view dir);
|
||||
|
||||
/**
|
||||
* Check whether 'path' is equal to 'dir' or a descendant of
|
||||
* 'dir'. Both paths must be canonicalized.
|
||||
*/
|
||||
bool isDirOrInDir(std::string_view path, std::string_view dir);
|
||||
|
||||
/**
|
||||
* Get status of `path`.
|
||||
*/
|
||||
struct stat stat(const Path & path);
|
||||
struct stat lstat(const Path & path);
|
||||
|
||||
/**
|
||||
* `lstat` the given path if it exists.
|
||||
* @return std::nullopt if the path doesn't exist, or an optional containing the result of `lstat` otherwise
|
||||
*/
|
||||
std::optional<struct stat> maybeLstat(const Path & path);
|
||||
|
||||
/**
|
||||
* @return true iff the given path exists.
|
||||
*/
|
||||
bool pathExists(const Path & path);
|
||||
|
||||
/**
|
||||
* A version of pathExists that returns false on a permission error.
|
||||
* Useful for inferring default paths across directories that might not
|
||||
* be readable.
|
||||
* @return true iff the given path can be accessed and exists
|
||||
*/
|
||||
bool pathAccessible(const Path & path);
|
||||
|
||||
/**
|
||||
* Read the contents (target) of a symbolic link. The result is not
|
||||
* in any way canonicalised.
|
||||
*/
|
||||
Path readLink(const Path & path);
|
||||
|
||||
bool isLink(const Path & path);
|
||||
|
||||
/**
|
||||
* Read the contents of a directory. The entries `.` and `..` are
|
||||
* removed.
|
||||
*/
|
||||
struct DirEntry
|
||||
{
|
||||
std::string name;
|
||||
ino_t ino;
|
||||
/**
|
||||
* one of DT_*
|
||||
*/
|
||||
unsigned char type;
|
||||
DirEntry(std::string name, ino_t ino, unsigned char type)
|
||||
: name(std::move(name)), ino(ino), type(type) { }
|
||||
};
|
||||
|
||||
typedef std::vector<DirEntry> DirEntries;
|
||||
|
||||
DirEntries readDirectory(const Path & path);
|
||||
|
||||
unsigned char getFileType(const Path & path);
|
||||
|
||||
/**
|
||||
* Read the contents of a file into a string.
|
||||
*/
|
||||
std::string readFile(const Path & path);
|
||||
void readFile(const Path & path, Sink & sink);
|
||||
|
||||
/**
|
||||
* Write a string to a file.
|
||||
*/
|
||||
void writeFile(const Path & path, std::string_view s, mode_t mode = 0666, bool sync = false);
|
||||
|
||||
void writeFile(const Path & path, Source & source, mode_t mode = 0666, bool sync = false);
|
||||
|
||||
/**
|
||||
* Flush a file's parent directory to disk
|
||||
*/
|
||||
void syncParent(const Path & path);
|
||||
|
||||
/**
|
||||
* Delete a path; i.e., in the case of a directory, it is deleted
|
||||
* recursively. It's not an error if the path does not exist. The
|
||||
* second variant returns the number of bytes and blocks freed.
|
||||
*/
|
||||
void deletePath(const Path & path);
|
||||
|
||||
void deletePath(const Path & path, uint64_t & bytesFreed);
|
||||
|
||||
/**
|
||||
* Create a directory and all its parents, if necessary. Returns the
|
||||
* list of created directories, in order of creation.
|
||||
*/
|
||||
Paths createDirs(const Path & path);
|
||||
inline Paths createDirs(PathView path)
|
||||
{
|
||||
return createDirs(Path(path));
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a symlink.
|
||||
*/
|
||||
void createSymlink(const Path & target, const Path & link);
|
||||
|
||||
/**
|
||||
* Atomically create or replace a symlink.
|
||||
*/
|
||||
void replaceSymlink(const Path & target, const Path & link);
|
||||
|
||||
void renameFile(const Path & src, const Path & dst);
|
||||
|
||||
/**
|
||||
* Similar to 'renameFile', but fallback to a copy+remove if `src` and `dst`
|
||||
* are on a different filesystem.
|
||||
*
|
||||
* Beware that this might not be atomic because of the copy that happens behind
|
||||
* the scenes
|
||||
*/
|
||||
void moveFile(const Path & src, const Path & dst);
|
||||
|
||||
struct CopyFileFlags
|
||||
{
|
||||
/**
|
||||
* Delete the file after copying.
|
||||
*/
|
||||
bool deleteAfter = false;
|
||||
|
||||
/**
|
||||
* Follow symlinks and copy the eventual target.
|
||||
*/
|
||||
bool followSymlinks = false;
|
||||
};
|
||||
|
||||
/**
|
||||
* Recursively copy the content of `oldPath` to `newPath`. If `andDelete` is
|
||||
* `true`, then also remove `oldPath` (making this equivalent to `moveFile`, but
|
||||
* with the guaranty that the destination will be “fresh”, with no stale inode
|
||||
* or file descriptor pointing to it).
|
||||
*/
|
||||
void copyFile(const Path & oldPath, const Path & newPath, CopyFileFlags flags);
|
||||
|
||||
/**
|
||||
* Automatic cleanup of resources.
|
||||
*/
|
||||
|
||||
|
||||
class AutoDelete
|
||||
{
|
||||
Path path;
|
||||
bool del;
|
||||
bool recursive;
|
||||
public:
|
||||
AutoDelete();
|
||||
AutoDelete(const Path & p, bool recursive = true);
|
||||
~AutoDelete();
|
||||
void cancel();
|
||||
void reset(const Path & p, bool recursive = true);
|
||||
operator Path() const { return path; }
|
||||
operator PathView() const { return path; }
|
||||
};
|
||||
|
||||
struct DIRDeleter
|
||||
{
|
||||
void operator()(DIR * dir) const {
|
||||
closedir(dir);
|
||||
}
|
||||
};
|
||||
|
||||
typedef std::unique_ptr<DIR, DIRDeleter> AutoCloseDir;
|
||||
|
||||
/**
|
||||
* Create a temporary directory.
|
||||
*/
|
||||
Path createTempDir(const Path & tmpRoot = "", const Path & prefix = "nix",
|
||||
bool includePid = true, bool useGlobalCounter = true, mode_t mode = 0755);
|
||||
|
||||
/**
|
||||
* Create a temporary file, returning a file handle and its path.
|
||||
*/
|
||||
std::pair<AutoCloseFD, Path> createTempFile(const Path & prefix = "nix");
|
||||
|
||||
/**
|
||||
* Used in various places.
|
||||
*/
|
||||
typedef std::function<bool(const Path & path)> PathFilter;
|
||||
|
||||
extern PathFilter defaultPathFilter;
|
||||
|
||||
}
|
||||
|
|
@ -1,175 +0,0 @@
|
|||
#include <sys/time.h>
|
||||
#include <filesystem>
|
||||
#include <atomic>
|
||||
|
||||
#include "finally.hh"
|
||||
#include "util.hh"
|
||||
#include "signals.hh"
|
||||
#include "types.hh"
|
||||
|
||||
namespace fs = std::filesystem;
|
||||
|
||||
namespace nix {
|
||||
|
||||
static Path tempName(Path tmpRoot, const Path & prefix, bool includePid,
|
||||
std::atomic<unsigned int> & counter)
|
||||
{
|
||||
tmpRoot = canonPath(tmpRoot.empty() ? getEnv("TMPDIR").value_or("/tmp") : tmpRoot, true);
|
||||
if (includePid)
|
||||
return fmt("%1%/%2%-%3%-%4%", tmpRoot, prefix, getpid(), counter++);
|
||||
else
|
||||
return fmt("%1%/%2%-%3%", tmpRoot, prefix, counter++);
|
||||
}
|
||||
|
||||
Path createTempDir(const Path & tmpRoot, const Path & prefix,
|
||||
bool includePid, bool useGlobalCounter, mode_t mode)
|
||||
{
|
||||
static std::atomic<unsigned int> globalCounter = 0;
|
||||
std::atomic<unsigned int> localCounter = 0;
|
||||
auto & counter(useGlobalCounter ? globalCounter : localCounter);
|
||||
|
||||
while (1) {
|
||||
checkInterrupt();
|
||||
Path tmpDir = tempName(tmpRoot, prefix, includePid, counter);
|
||||
if (mkdir(tmpDir.c_str(), mode) == 0) {
|
||||
#if __FreeBSD__
|
||||
/* Explicitly set the group of the directory. This is to
|
||||
work around around problems caused by BSD's group
|
||||
ownership semantics (directories inherit the group of
|
||||
the parent). For instance, the group of /tmp on
|
||||
FreeBSD is "wheel", so all directories created in /tmp
|
||||
will be owned by "wheel"; but if the user is not in
|
||||
"wheel", then "tar" will fail to unpack archives that
|
||||
have the setgid bit set on directories. */
|
||||
if (chown(tmpDir.c_str(), (uid_t) -1, getegid()) != 0)
|
||||
throw SysError("setting group of directory '%1%'", tmpDir);
|
||||
#endif
|
||||
return tmpDir;
|
||||
}
|
||||
if (errno != EEXIST)
|
||||
throw SysError("creating directory '%1%'", tmpDir);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
std::pair<AutoCloseFD, Path> createTempFile(const Path & prefix)
|
||||
{
|
||||
Path tmpl(getEnv("TMPDIR").value_or("/tmp") + "/" + prefix + ".XXXXXX");
|
||||
// Strictly speaking, this is UB, but who cares...
|
||||
// FIXME: use O_TMPFILE.
|
||||
AutoCloseFD fd(mkstemp((char *) tmpl.c_str()));
|
||||
if (!fd)
|
||||
throw SysError("creating temporary file '%s'", tmpl);
|
||||
closeOnExec(fd.get());
|
||||
return {std::move(fd), tmpl};
|
||||
}
|
||||
|
||||
void createSymlink(const Path & target, const Path & link)
|
||||
{
|
||||
if (symlink(target.c_str(), link.c_str()))
|
||||
throw SysError("creating symlink from '%1%' to '%2%'", link, target);
|
||||
}
|
||||
|
||||
void replaceSymlink(const Path & target, const Path & link)
|
||||
{
|
||||
for (unsigned int n = 0; true; n++) {
|
||||
Path tmp = canonPath(fmt("%s/.%d_%s", dirOf(link), n, baseNameOf(link)));
|
||||
|
||||
try {
|
||||
createSymlink(target, tmp);
|
||||
} catch (SysError & e) {
|
||||
if (e.errNo == EEXIST) continue;
|
||||
throw;
|
||||
}
|
||||
|
||||
renameFile(tmp, link);
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void setWriteTime(const fs::path & p, const struct stat & st)
|
||||
{
|
||||
struct timeval times[2];
|
||||
times[0] = {
|
||||
.tv_sec = st.st_atime,
|
||||
.tv_usec = 0,
|
||||
};
|
||||
times[1] = {
|
||||
.tv_sec = st.st_mtime,
|
||||
.tv_usec = 0,
|
||||
};
|
||||
if (lutimes(p.c_str(), times) != 0)
|
||||
throw SysError("changing modification time of '%s'", p);
|
||||
}
|
||||
|
||||
void copy(const fs::directory_entry & from, const fs::path & to, CopyFileFlags flags)
|
||||
{
|
||||
// TODO: Rewrite the `is_*` to use `symlink_status()`
|
||||
auto statOfFrom = lstat(from.path().c_str());
|
||||
auto fromStatus = from.symlink_status();
|
||||
|
||||
// Mark the directory as writable so that we can delete its children
|
||||
if (flags.deleteAfter && fs::is_directory(fromStatus)) {
|
||||
fs::permissions(from.path(), fs::perms::owner_write, fs::perm_options::add | fs::perm_options::nofollow);
|
||||
}
|
||||
|
||||
|
||||
if (fs::is_symlink(fromStatus) || fs::is_regular_file(fromStatus)) {
|
||||
auto opts = fs::copy_options::overwrite_existing;
|
||||
|
||||
if (!flags.followSymlinks) {
|
||||
opts |= fs::copy_options::copy_symlinks;
|
||||
}
|
||||
|
||||
fs::copy(from.path(), to, opts);
|
||||
} else if (fs::is_directory(fromStatus)) {
|
||||
fs::create_directory(to);
|
||||
for (auto & entry : fs::directory_iterator(from.path())) {
|
||||
copy(entry, to / entry.path().filename(), flags);
|
||||
}
|
||||
} else {
|
||||
throw Error("file '%s' has an unsupported type", from.path());
|
||||
}
|
||||
|
||||
setWriteTime(to, statOfFrom);
|
||||
if (flags.deleteAfter) {
|
||||
if (!fs::is_symlink(fromStatus))
|
||||
fs::permissions(from.path(), fs::perms::owner_write, fs::perm_options::add | fs::perm_options::nofollow);
|
||||
fs::remove(from.path());
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void copyFile(const Path & oldPath, const Path & newPath, CopyFileFlags flags)
|
||||
{
|
||||
return copy(fs::directory_entry(fs::path(oldPath)), fs::path(newPath), flags);
|
||||
}
|
||||
|
||||
void renameFile(const Path & oldName, const Path & newName)
|
||||
{
|
||||
fs::rename(oldName, newName);
|
||||
}
|
||||
|
||||
void moveFile(const Path & oldName, const Path & newName)
|
||||
{
|
||||
try {
|
||||
renameFile(oldName, newName);
|
||||
} catch (fs::filesystem_error & e) {
|
||||
auto oldPath = fs::path(oldName);
|
||||
auto newPath = fs::path(newName);
|
||||
// For the move to be as atomic as possible, copy to a temporary
|
||||
// directory
|
||||
fs::path temp = createTempDir(newPath.parent_path(), "rename-tmp");
|
||||
Finally removeTemp = [&]() { fs::remove(temp); };
|
||||
auto tempCopyTarget = temp / "copy-target";
|
||||
if (e.code().value() == EXDEV) {
|
||||
fs::remove(newPath);
|
||||
warn("Can’t rename %s as %s, copying instead", oldName, newName);
|
||||
copy(fs::directory_entry(oldPath), tempCopyTarget, { .deleteAfter = true });
|
||||
renameFile(tempCopyTarget, newPath);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -1,4 +1,3 @@
|
|||
#include <iostream>
|
||||
#include <cstring>
|
||||
|
||||
#include <openssl/crypto.h>
|
||||
|
|
@ -8,8 +7,8 @@
|
|||
#include "args.hh"
|
||||
#include "hash.hh"
|
||||
#include "archive.hh"
|
||||
#include "logging.hh"
|
||||
#include "split.hh"
|
||||
#include "util.hh"
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
|
||||
#include "types.hh"
|
||||
#include "serialise.hh"
|
||||
#include "file-system.hh"
|
||||
|
||||
|
||||
namespace nix {
|
||||
|
|
|
|||
Some files were not shown because too many files have changed in this diff Show more
Loading…
Reference in a new issue