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authorLinus Heckemann <git@sphalerite.org>2018-02-13T11·05+0000
committerLinus Heckemann <git@sphalerite.org>2018-02-13T14·26+0000
commit78ac3eb4ebc04e180abeb01bcc6f9d4103522eab (patch)
tree240d03638868440126931fecd8e6886b6e7a3bf5 /src/nix
parentc5cc57e96220cd3ed915875f3b1eeb2ba1f98a30 (diff)
Fix #1762
nix-store --export, nix-store --dump, and nix dump-path would previously
fail silently if writing the data out failed, because
 a) FdSink::write ignored exceptions, and
 b) the commands relied on FdSink's destructor, which ignores
    exceptions, to flush the data out.

This could cause rather opaque issues with installing nixos, because
nix-store --export would happily proceed even if it couldn't write its
data out (e.g. if nix-store --import on the other side of the pipe
failed).

This commit adds tests that expose these issues in the nix-store
commands, and fixes them for all three.
Diffstat (limited to 'src/nix')
-rw-r--r--src/nix/dump-path.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/nix/dump-path.cc b/src/nix/dump-path.cc
index 1a1866437b07..f411c0cb7c89 100644
--- a/src/nix/dump-path.cc
+++ b/src/nix/dump-path.cc
@@ -29,6 +29,7 @@ struct CmdDumpPath : StorePathCommand
     {
         FdSink sink(STDOUT_FILENO);
         store->narFromPath(storePath, sink);
+        sink.flush();
     }
 };