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Diffstat (limited to 'apt-pkg/deb/dpkgpm.cc')
-rw-r--r--apt-pkg/deb/dpkgpm.cc150
1 files changed, 78 insertions, 72 deletions
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc
index 46f48777c..b6c92fc23 100644
--- a/apt-pkg/deb/dpkgpm.cc
+++ b/apt-pkg/deb/dpkgpm.cc
@@ -887,6 +887,28 @@ bool pkgDPkgPM::Go(int OutStatusFd)
// create log
OpenLog();
+ // Generate the base argument list for dpkg
+ std::vector<const char *> Args;
+ unsigned long StartSize = 0;
+ string const Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
+ Args.push_back(Tmp.c_str());
+ StartSize += Tmp.length();
+
+ // Stick in any custom dpkg options
+ Configuration::Item const *Opts = _config->Tree("DPkg::Options");
+ if (Opts != 0)
+ {
+ Opts = Opts->Child;
+ for (; Opts != 0; Opts = Opts->Next)
+ {
+ if (Opts->Value.empty() == true)
+ continue;
+ Args.push_back(Opts->Value.c_str());
+ StartSize += Opts->Value.length();
+ }
+ }
+ size_t const BaseArgs = Args.size();
+
// this loop is runs once per operation
for (vector<Item>::const_iterator I = List.begin(); I != List.end();)
{
@@ -908,11 +930,12 @@ bool pkgDPkgPM::Go(int OutStatusFd)
for (; J != List.end() && J->Op == I->Op; ++J)
/* nothing */;
- // Generate the argument list
- const char *Args[MaxArgs + 50];
// keep track of allocated strings for multiarch package names
- char *Packages[MaxArgs + 50];
- unsigned int pkgcount = 0;
+ std::vector<char *> Packages;
+
+ // start with the baseset of arguments
+ unsigned long Size = StartSize;
+ Args.erase(Args.begin() + BaseArgs, Args.end());
// Now check if we are within the MaxArgs limit
//
@@ -922,91 +945,67 @@ bool pkgDPkgPM::Go(int OutStatusFd)
// - with the split they may now be configured in different
// runs
if (J - I > (signed)MaxArgs)
+ {
J = I + MaxArgs;
-
- unsigned int n = 0;
- unsigned long Size = 0;
- string const Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
- Args[n++] = Tmp.c_str();
- Size += strlen(Args[n-1]);
-
- // Stick in any custom dpkg options
- Configuration::Item const *Opts = _config->Tree("DPkg::Options");
- if (Opts != 0)
+ Args.reserve(MaxArgs + 10);
+ }
+ else
{
- Opts = Opts->Child;
- for (; Opts != 0; Opts = Opts->Next)
- {
- if (Opts->Value.empty() == true)
- continue;
- Args[n++] = Opts->Value.c_str();
- Size += Opts->Value.length();
- }
+ Args.reserve((J - I) + 10);
}
+
- char status_fd_buf[20];
int fd[2];
pipe(fd);
-
- Args[n++] = "--status-fd";
- Size += strlen(Args[n-1]);
+
+#define ADDARG(X) Args.push_back(X); Size += strlen(X)
+#define ADDARGC(X) Args.push_back(X); Size += sizeof(X) - 1
+
+ ADDARGC("--status-fd");
+ char status_fd_buf[20];
snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]);
- Args[n++] = status_fd_buf;
- Size += strlen(Args[n-1]);
+ ADDARG(status_fd_buf);
switch (I->Op)
{
case Item::Remove:
- Args[n++] = "--force-depends";
- Size += strlen(Args[n-1]);
- Args[n++] = "--force-remove-essential";
- Size += strlen(Args[n-1]);
- Args[n++] = "--remove";
- Size += strlen(Args[n-1]);
+ ADDARGC("--force-depends");
+ ADDARGC("--force-remove-essential");
+ ADDARGC("--remove");
break;
case Item::Purge:
- Args[n++] = "--force-depends";
- Size += strlen(Args[n-1]);
- Args[n++] = "--force-remove-essential";
- Size += strlen(Args[n-1]);
- Args[n++] = "--purge";
- Size += strlen(Args[n-1]);
+ ADDARGC("--force-depends");
+ ADDARGC("--force-remove-essential");
+ ADDARGC("--purge");
break;
case Item::Configure:
- Args[n++] = "--configure";
- Size += strlen(Args[n-1]);
+ ADDARGC("--configure");
break;
case Item::ConfigurePending:
- Args[n++] = "--configure";
- Size += strlen(Args[n-1]);
- Args[n++] = "--pending";
- Size += strlen(Args[n-1]);
+ ADDARGC("--configure");
+ ADDARGC("--pending");
break;
case Item::TriggersPending:
- Args[n++] = "--triggers-only";
- Size += strlen(Args[n-1]);
- Args[n++] = "--pending";
- Size += strlen(Args[n-1]);
+ ADDARGC("--triggers-only");
+ ADDARGC("--pending");
break;
case Item::Install:
- Args[n++] = "--unpack";
- Size += strlen(Args[n-1]);
- Args[n++] = "--auto-deconfigure";
- Size += strlen(Args[n-1]);
+ ADDARGC("--unpack");
+ ADDARGC("--auto-deconfigure");
break;
}
if (NoTriggers == true && I->Op != Item::TriggersPending &&
I->Op != Item::ConfigurePending)
{
- Args[n++] = "--no-triggers";
- Size += strlen(Args[n-1]);
+ ADDARGC("--no-triggers");
}
+#undef ADDARGC
// Write in the file or package names
if (I->Op == Item::Install)
@@ -1015,10 +1014,10 @@ bool pkgDPkgPM::Go(int OutStatusFd)
{
if (I->File[0] != '/')
return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str());
- Args[n++] = I->File.c_str();
- Size += strlen(Args[n-1]);
+ Args.push_back(I->File.c_str());
+ Size += I->File.length();
}
- }
+ }
else
{
string const nativeArch = _config->Find("APT::Architecture");
@@ -1030,29 +1029,35 @@ bool pkgDPkgPM::Go(int OutStatusFd)
if (I->Op == Item::Configure && disappearedPkgs.find(I->Pkg.Name()) != disappearedPkgs.end())
continue;
if (I->Pkg.Arch() == nativeArch || !strcmp(I->Pkg.Arch(), "all"))
- Args[n++] = I->Pkg.Name();
+ {
+ char const * const name = I->Pkg.Name();
+ ADDARG(name);
+ }
else
{
- Packages[pkgcount] = strdup(I->Pkg.FullName(false).c_str());
- Args[n++] = Packages[pkgcount++];
+ char * const fullname = strdup(I->Pkg.FullName(false).c_str());
+ Packages.push_back(fullname);
+ ADDARG(fullname);
}
- Size += strlen(Args[n-1]);
}
// skip configure action if all sheduled packages disappeared
if (oldSize == Size)
continue;
}
- Args[n] = 0;
+#undef ADDARG
+
J = I;
if (_config->FindB("Debug::pkgDPkgPM",false) == true)
{
- for (unsigned int k = 0; k != n; k++)
- clog << Args[k] << ' ';
+ for (std::vector<const char *>::const_iterator a = Args.begin();
+ a != Args.end(); ++a)
+ clog << *a << ' ';
clog << endl;
continue;
}
-
+ Args.push_back(NULL);
+
cout << flush;
clog << flush;
cerr << flush;
@@ -1162,7 +1167,7 @@ bool pkgDPkgPM::Go(int OutStatusFd)
/* No Job Control Stop Env is a magic dpkg var that prevents it
from using sigstop */
putenv((char *)"DPKG_NO_TSTP=yes");
- execvp(Args[0],(char **)Args);
+ execvp(Args[0], (char**) &Args[0]);
cerr << "Could not exec dpkg!" << endl;
_exit(100);
}
@@ -1188,10 +1193,11 @@ bool pkgDPkgPM::Go(int OutStatusFd)
sigemptyset(&sigmask);
sigprocmask(SIG_BLOCK,&sigmask,&original_sigmask);
- /* clean up the temporary allocation for multiarch package names in
- the parent, so we don't leak memory when we return. */
- for (unsigned int i = 0; i < pkgcount; i++)
- free(Packages[i]);
+ /* free vectors (and therefore memory) as we don't need the included data anymore */
+ for (std::vector<char *>::const_iterator p = Packages.begin();
+ p != Packages.end(); ++p)
+ free(*p);
+ Packages.clear();
// the result of the waitpid call
int res;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-15 04:34:55 +0000