* Added a command ‘nix-store --verify-paths PATHS’ to check whether

the contents of any of the given store paths have been modified.
  E.g.

    $ nix-store --verify-path $(nix-store -qR /var/run/current-system)
    path `/nix/store/m2smyiwbxidlprfxfz4rjlvz2c3mg58y-etc' was modified! expected hash `fc87e271c5fdf179b47939b08ad13440493805584b35e3014109d04d8436e7b8', got `20f1a47281b3c0cbe299ce47ad5ca7340b20ab34246426915fce0ee9116483aa'

  All paths are checked; the exit code is 1 if any path has been
  modified, 0 otherwise.
This commit is contained in:
Eelco Dolstra 2011-09-06 12:06:30 +00:00
parent 82710f96f7
commit e6cb3d0a0d
5 changed files with 39 additions and 7 deletions

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@ -40,6 +40,10 @@
<para>TODO: Nix expression search path (<literal>import &lt;foo/bar.nix></literal>).</para> <para>TODO: Nix expression search path (<literal>import &lt;foo/bar.nix></literal>).</para>
</listitem> </listitem>
<listitem>
<para>TODO: <command>nix-store --verify-path</command> command.</para>
</listitem>
</itemizedlist> </itemizedlist>
</section> </section>

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@ -187,12 +187,11 @@ static void initAndRun(int argc, char * * argv)
ignore options for the ATerm library. */ ignore options for the ATerm library. */
for (Strings::iterator i = args.begin(); i != args.end(); ++i) { for (Strings::iterator i = args.begin(); i != args.end(); ++i) {
string arg = *i; string arg = *i;
if (string(arg, 0, 4) == "-at-") ; if (arg.length() > 2 && arg[0] == '-' && arg[1] != '-' && !isdigit(arg[1])) {
else if (arg.length() > 2 && arg[0] == '-' && arg[1] != '-' && !isdigit(arg[1])) {
for (unsigned int j = 1; j < arg.length(); j++) for (unsigned int j = 1; j < arg.length(); j++)
if (isalpha(arg[j])) if (isalpha(arg[j]))
remaining.push_back((string) "-" + arg[j]); remaining.push_back((string) "-" + arg[j]);
else { else {
remaining.push_back(string(arg, j)); remaining.push_back(string(arg, j));
break; break;
} }
@ -332,6 +331,9 @@ static void * oomHandler(size_t requested)
} }
int exitCode = 0;
} }
@ -390,7 +392,5 @@ int main(int argc, char * * argv)
return 1; return 1;
} }
return 0; return exitCode;
} }

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@ -53,6 +53,9 @@ struct RemoveTempRoots
~RemoveTempRoots(); ~RemoveTempRoots();
}; };
/* Exit code of the program. */
extern int exitCode;
} }

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@ -25,6 +25,7 @@ Operations:
valid valid
--verify: verify Nix structures --verify: verify Nix structures
--verify-path: verify whether the given store paths haven't been modified
--optimise: optimise the Nix store by hard-linking identical files --optimise: optimise the Nix store by hard-linking identical files
--query-failed-paths: list paths that failed to build (if enabled) --query-failed-paths: list paths that failed to build (if enabled)

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@ -466,11 +466,12 @@ static void opCheckValidity(Strings opFlags, Strings opArgs)
i != opArgs.end(); ++i) i != opArgs.end(); ++i)
{ {
Path path = followLinksToStorePath(*i); Path path = followLinksToStorePath(*i);
if (!store->isValidPath(path)) if (!store->isValidPath(path)) {
if (printInvalid) if (printInvalid)
cout << format("%1%\n") % path; cout << format("%1%\n") % path;
else else
throw Error(format("path `%1%' is not valid") % path); throw Error(format("path `%1%' is not valid") % path);
}
} }
} }
@ -648,6 +649,27 @@ static void opVerify(Strings opFlags, Strings opArgs)
} }
/* Verify whether the contents of the given store path have not changed. */
static void opVerifyPath(Strings opFlags, Strings opArgs)
{
if (!opFlags.empty())
throw UsageError("no flags expected");
foreach (Strings::iterator, i, opArgs) {
Path path = followLinksToStorePath(*i);
printMsg(lvlTalkative, format("checking path `%1%'...") % path);
ValidPathInfo info = store->queryPathInfo(path);
HashResult current = hashPath(info.hash.type, path);
if (current.first != info.hash) {
printMsg(lvlError,
format("path `%1%' was modified! expected hash `%2%', got `%3%'")
% path % printHash(info.hash) % printHash(current.first));
exitCode = 1;
}
}
}
static void showOptimiseStats(OptimiseStats & stats) static void showOptimiseStats(OptimiseStats & stats)
{ {
printMsg(lvlError, printMsg(lvlError,
@ -750,6 +772,8 @@ void run(Strings args)
op = opInit; op = opInit;
else if (arg == "--verify") else if (arg == "--verify")
op = opVerify; op = opVerify;
else if (arg == "--verify-path")
op = opVerifyPath;
else if (arg == "--optimise") else if (arg == "--optimise")
op = opOptimise; op = opOptimise;
else if (arg == "--query-failed-paths") else if (arg == "--query-failed-paths")