diff options
| -rw-r--r-- | apt-pkg/deb/dpkgpm.cc | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc index 04a13a86c..2d26493f0 100644 --- a/apt-pkg/deb/dpkgpm.cc +++ b/apt-pkg/deb/dpkgpm.cc @@ -55,6 +55,18 @@ using namespace std; +APT_PURE static unsigned int +EnvironmentSize() +{ + unsigned int size = 0; + char **envp = environ; + + while (*envp != NULL) + size += strlen (*envp++) + 1; + + return size; +} + class pkgDPkgPMPrivate { public: @@ -1236,8 +1248,15 @@ bool pkgDPkgPM::GoNoABIBreak(APT::Progress::PackageManager *progress) fd_set rfds; struct timespec tv; - unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024); - unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024); + // FIXME: do we really need this limit when we have MaxArgBytes? + unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",32*1024); + + // try to figure out the max environment size + unsigned int OSArgMax = sysconf(_SC_ARG_MAX); + if(OSArgMax < 0) + OSArgMax = 32*1024; + OSArgMax -= EnvironmentSize() - 2*1024; + unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes", OSArgMax); bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false); if (RunScripts("DPkg::Pre-Invoke") == false) |