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* Urgh. Do setgid() before setuid(), because the semantics of setgid() 

changes completely depending on whether you're root...
This commit is contained in:
Eelco Dolstra 2006-12-05 18:28:15 +00:00
parent 6f0d050324
commit 44cad9630f
1 changed files with 4 additions and 4 deletions
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8
src/libstore/build.cc
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@ -1364,13 +1364,13 @@ void DerivationGoal::startBuilder()
if (setgroups(0, 0) == -1)
throw SysError("cannot clear the set of supplementary groups");
setuid(buildUser.getUID());
assert(getuid() == buildUser.getUID());
assert(geteuid() == buildUser.getUID());
setgid(gidBuildGroup);
assert(getgid() == gidBuildGroup);
assert(getegid() == gidBuildGroup);
setuid(buildUser.getUID());
assert(getuid() == buildUser.getUID());
assert(geteuid() == buildUser.getUID());
}
/* Execute the program. This should not return. */