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Handle debug messages from runChild()

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Turns out that "nix-build -vvv" with chroots enabled has been broken
for some time, because some debug message got interpreted as an error.
This commit is contained in:
Eelco Dolstra 2015-08-03 18:04:32 +02:00
parent 3db950aab7
commit 30d19a2bdc
1 changed files with 16 additions and 10 deletions
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24
src/libstore/build.cc
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@ -1,3 +1,4 @@
#include <iostream>
#include "config.h"
#include "references.hh"
@ -2161,8 +2162,14 @@ void DerivationGoal::startBuilder()
singleton<set<int> >(builderOut.readSide), true, true);
/* Check if setting up the build environment failed. */
while (true) {
string msg = readLine(builderOut.readSide);
if (!msg.empty()) throw Error(msg);
if (string(msg, 0, 1) == "\1") {
if (msg.size() == 1) break;
throw Error(string(msg, 1));
}
printMsg(lvlDebug, msg);
}
if (settings.printBuildTrace) {
printMsg(lvlError, format("@ build-started %1% - %2% %3%")
@ -2178,6 +2185,8 @@ void DerivationGoal::runChild()
try { /* child */
logType = ltFlat;
commonChildInit(builderOut);
#if CHROOT_ENABLED
@ -2502,6 +2511,9 @@ void DerivationGoal::runChild()
}
sandboxProfile += ")\n";
debug("Generated sandbox profile:");
debug(sandboxProfile);
builder = "/usr/bin/sandbox-exec";
args.push_back("sandbox-exec");
args.push_back("-p");
@ -2519,13 +2531,7 @@ void DerivationGoal::runChild()
restoreSIGPIPE();
/* Indicate that we managed to set up the build environment. */
writeFull(STDERR_FILENO, "\n");
/* This needs to be after that fateful '\n', and I didn't want to duplicate code */
if (useChroot && SANDBOX_ENABLED) {
printMsg(lvlDebug, "Generated sandbox profile:");
printMsg(lvlDebug, sandboxProfile);
}
writeFull(STDERR_FILENO, string("\1\n"));
/* Execute the program. This should not return. */
if (isBuiltin(*drv)) {
@ -2547,7 +2553,7 @@ void DerivationGoal::runChild()
throw SysError(format("executing ‘%1%’") % drv->builder);
} catch (std::exception & e) {
writeFull(STDERR_FILENO, "while setting up the build environment: " + string(e.what()) + "\n");
writeFull(STDERR_FILENO, "\1while setting up the build environment: " + string(e.what()) + "\n");
_exit(1);
}
}