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daemon: Gracefully handle Nix errors.

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* nix/nix-daemon/guix-daemon.cc (main): Run Nix code in an exception
  handler; gracefully print error messages, and exit with EXIT_FAILURE.
This commit is contained in:
Ludovic Courtès 2012-12-16 18:28:00 +01:00
parent e2332e8aa7
commit 868fce7c4a
1 changed files with 25 additions and 13 deletions
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38
nix/nix-daemon/guix-daemon.cc
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@ -27,6 +27,7 @@
#include <argp.h>
#include <unistd.h>
#include <sys/types.h>
#include <exception>
/* Variables used by `nix-daemon.cc'. */
volatile ::sig_atomic_t blockInt;
@ -170,18 +171,29 @@ main (int argc, char *argv[])
settings.useChroot = false;
#endif
settings.processEnvironment ();
/* FIXME: Disable substitutes until we have something that works. */
settings.useSubstitutes = false;
settings.substituters.clear ();
argp_parse (&argp, argc, argv, 0, 0, 0);
if (geteuid () == 0 && settings.buildUsersGroup.empty ())
fprintf (stderr, "warning: running as root is highly recommended, "
"unless `--build-users-group' is used\n");
argvSaved = argv;
run (nothing);
try
{
settings.processEnvironment ();
/* FIXME: Disable substitutes until we have something that works. */
settings.useSubstitutes = false;
settings.substituters.clear ();
argp_parse (&argp, argc, argv, 0, 0, 0);
if (geteuid () == 0 && settings.buildUsersGroup.empty ())
fprintf (stderr, "warning: running as root is highly recommended, "
"unless `--build-users-group' is used\n");
run (nothing);
}
catch (std::exception &e)
{
fprintf (stderr, "error: %s\n", e.what ());
return EXIT_FAILURE;
}
return EXIT_SUCCESS; /* never reached */
}