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* nix-env --switch-generation / --list-generations /

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--delete-generations: lock the profile to prevent (extremely
  unlikely) race conditions.
This commit is contained in:
Eelco Dolstra 2006-09-14 22:33:53 +00:00
parent 5c38c863bd
commit 86cbd93ec1
1 changed files with 9 additions and 0 deletions
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9
src/nix-env/main.cc
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@ -943,6 +943,9 @@ static const int prevGen = -2;
static void switchGeneration(Globals & globals, int dstGen)
{
PathLocks lock;
lockProfile(lock, globals.profile);
int curGen;
Generations gens = findGenerations(globals.profile, curGen);
@ -1004,6 +1007,9 @@ static void opListGenerations(Globals & globals,
if (opArgs.size() != 0)
throw UsageError(format("no arguments expected"));
PathLocks lock;
lockProfile(lock, globals.profile);
int curGen;
Generations gens = findGenerations(globals.profile, curGen);
@ -1032,6 +1038,9 @@ static void opDeleteGenerations(Globals & globals,
if (opFlags.size() > 0)
throw UsageError(format("unknown flag `%1%'") % opFlags.front());
PathLocks lock;
lockProfile(lock, globals.profile);
int curGen;
Generations gens = findGenerations(globals.profile, curGen);