//
//===----------------------------------------------------------------------===//
-#include "Archive.h"
+#include "llvm/ADT/StringSwitch.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
+#include "llvm/Object/Archive.h"
+#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Errc.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Format.h"
+#include "llvm/Support/LineIterator.h"
#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Support/ToolOutputFile.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cstdlib>
-#include <fcntl.h>
#include <memory>
#if !defined(_MSC_VER) && !defined(__MINGW32__)
using namespace llvm;
-// Option for compatibility with AIX, not used but must allow it to be present.
-static cl::opt<bool>
-X32Option ("X32_64", cl::Hidden,
- cl::desc("Ignored option for compatibility with AIX"));
+// The name this program was invoked as.
+static StringRef ToolName;
+
+static const char *TemporaryOutput;
+static int TmpArchiveFD = -1;
+
+// Show the error message and exit.
+LLVM_ATTRIBUTE_NORETURN static void fail(Twine Error) {
+ outs() << ToolName << ": " << Error << ".\n";
+ if (TmpArchiveFD != -1)
+ close(TmpArchiveFD);
+ if (TemporaryOutput)
+ sys::fs::remove(TemporaryOutput);
+ exit(1);
+}
-// llvm-ar operation code and modifier flags. This must come first.
-static cl::opt<std::string>
-Options(cl::Positional, cl::Required, cl::desc("{operation}[modifiers]..."));
+static void failIfError(std::error_code EC, Twine Context = "") {
+ if (!EC)
+ return;
+
+ std::string ContextStr = Context.str();
+ if (ContextStr == "")
+ fail(EC.message());
+ fail(Context + ": " + EC.message());
+}
-// llvm-ar remaining positional arguments.
+// llvm-ar/llvm-ranlib remaining positional arguments.
static cl::list<std::string>
-RestOfArgs(cl::Positional, cl::OneOrMore,
- cl::desc("[relpos] [count] <archive-file> [members]..."));
+ RestOfArgs(cl::Positional, cl::ZeroOrMore,
+
cl::desc("[relpos] [count] <archive-file> [members]..."));
-// MoreHelp - Provide additional help output explaining the operations and
-// modifiers of llvm-ar. This object instructs the CommandLine library
-// to print the text of the constructor when the --help option is given.
+static cl::opt<bool> MRI("M", cl::desc(""));
+
+std::string Options;
+
+// Provide additional help output explaining the operations and modifiers of
+// llvm-ar. This object instructs the CommandLine library to print the text of
+// the constructor when the --help option is given.
static cl::extrahelp MoreHelp(
"\nOPERATIONS:\n"
" d[NsS] - delete file(s) from the archive\n"
QuickAppend, ///< Quickly append to end of archive
ReplaceOrInsert, ///< Replace or Insert members
DisplayTable, ///< Display the table of contents
- Extract ///< Extract files back to file system
+ Extract, ///< Extract files back to file system
+ CreateSymTab ///< Create a symbol table in an existing archive
};
// Modifiers to follow operation to vary behavior
-bool AddAfter = false; ///< 'a' modifier
-bool AddBefore = false; ///< 'b' modifier
-bool Create = false; ///< 'c' modifier
-bool OriginalDates = false; ///< 'o' modifier
-bool SymTable = true; ///< 's' & 'S' modifiers
-bool OnlyUpdate = false; ///< 'u' modifier
-bool Verbose = false; ///< 'v' modifier
+static bool AddAfter = false; ///< 'a' modifier
+static bool AddBefore = false; ///< 'b' modifier
+static bool Create = false; ///< 'c' modifier
+static bool OriginalDates = false; ///< 'o' modifier
+static bool OnlyUpdate = false; ///< 'u' modifier
+static bool Verbose = false; ///< 'v' modifier
+static bool Symtab = true; ///< 's' modifier
// Relative Positional Argument (for insert/move). This variable holds
// the name of the archive member to which the 'a', 'b' or 'i' modifier
// refers. Only one of 'a', 'b' or 'i' can be specified so we only need
// one variable.
-std::string RelPos;
+static std::string RelPos;
// This variable holds the name of the archive file as given on the
// command line.
-std::string ArchiveName;
+static std::string ArchiveName;
// This variable holds the list of member files to proecess, as given
// on the command line.
-std::vector<std::string> Members;
-
-// This variable holds the (possibly expanded) list of path objects that
-// correspond to files we will
-std::set<std::string> Paths;
+static std::vector<StringRef> Members;
-// The Archive object to which all the editing operations will be sent.
-Archive* TheArchive = 0;
-
-// The name this program was invoked as.
-static const char *program_name;
-
-// show_help - Show the error message, the help message and exit.
+// Show the error message, the help message and exit.
LLVM_ATTRIBUTE_NORETURN static void
show_help(const std::string &msg) {
- errs() << program_name << ": " << msg << "\n\n";
+ errs() << ToolName << ": " << msg << "\n\n";
cl::PrintHelpMessage();
- if (TheArchive)
- delete TheArchive;
- std::exit(1);
-}
-
-// fail - Show the error message and exit.
-LLVM_ATTRIBUTE_NORETURN static void
-fail(const std::string &msg) {
- errs() << program_name << ": " << msg << "\n\n";
- if (TheArchive)
- delete TheArchive;
std::exit(1);
}
-// getRelPos - Extract the member filename from the command line for
-// the [relpos] argument associated with a, b, and i modifiers
-void getRelPos() {
+// Extract the member filename from the command line for the [relpos] argument
+// associated with a, b, and i modifiers
+static void getRelPos() {
if(RestOfArgs.size() == 0)
show_help("Expected [relpos] for a, b, or i modifier");
RelPos = RestOfArgs[0];
RestOfArgs.erase(RestOfArgs.begin());
}
-// getArchive - Get the archive file name from the command line
-void getArchive() {
+static void getOptions() {
+ if(RestOfArgs.size() == 0)
+ show_help("Expected options");
+ Options = RestOfArgs[0];
+ RestOfArgs.erase(RestOfArgs.begin());
+}
+
+// Get the archive file name from the command line
+static void getArchive() {
if(RestOfArgs.size() == 0)
show_help("An archive name must be specified");
ArchiveName = RestOfArgs[0];
RestOfArgs.erase(RestOfArgs.begin());
}
-// getMembers - Copy over remaining items in RestOfArgs to our Members vector
-// This is just for clarity.
-void getMembers() {
- if(RestOfArgs.size() > 0)
- Members = std::vector<std::string>(RestOfArgs);
+// Copy over remaining items in RestOfArgs to our Members vector
+static void getMembers() {
+ for (auto &Arg : RestOfArgs)
+ Members.push_back(Arg);
+}
+
+namespace {
+enum class MRICommand { AddMod, Create, Save, End, Invalid };
+}
+
+static std::vector<std::string> MRIMembers;
+static ArchiveOperation parseMRIScript() {
+ ErrorOr<std::unique_ptr<MemoryBuffer>> Buf = MemoryBuffer::getSTDIN();
+ failIfError(Buf.getError());
+ const MemoryBuffer &Ref = *Buf.get();
+ bool Saved = false;
+
+ for (line_iterator I(Ref, /*SkipBlanks*/ true, ';'), E; I != E; ++I) {
+ StringRef Line = *I;
+ StringRef CommandStr, Rest;
+ std::tie(CommandStr, Rest) = Line.split(' ');
+ auto Command = StringSwitch<MRICommand>(CommandStr.lower())
+ .Case("addmod", MRICommand::AddMod)
+ .Case("create", MRICommand::Create)
+ .Case("save", MRICommand::Save)
+ .Case("end", MRICommand::End)
+ .Default(MRICommand::Invalid);
+
+ switch (Command) {
+ case MRICommand::AddMod:
+ MRIMembers.push_back(Rest);
+ break;
+ case MRICommand::Create:
+ Create = true;
+ if (!ArchiveName.empty())
+ fail("Editing multiple archives not supported");
+ if (Saved)
+ fail("File already saved");
+ ArchiveName = Rest;
+ break;
+ case MRICommand::Save:
+ Saved = true;
+ break;
+ case MRICommand::End:
+ break;
+ case MRICommand::Invalid:
+ fail("Unknown command: " + CommandStr);
+ }
+ }
+
+ // Nothing to do if not saved.
+ if (!Saved)
+ exit(0);
+
+ for (auto &M : MRIMembers)
+ Members.push_back(M);
+
+ return ReplaceOrInsert;
}
-// parseCommandLine - Parse the command line options as presented and return the
-// operation specified. Process all modifiers and check to make sure that
-// constraints on modifier/operation pairs have not been violated.
-ArchiveOperation parseCommandLine() {
+// Parse the command line options as presented and return the operation
+// specified. Process all modifiers and check to make sure that constraints on
+// modifier/operation pairs have not been violated.
+static ArchiveOperation parseCommandLine() {
+ if (MRI) {
+ if (!RestOfArgs.empty())
+ fail("Cannot mix -M and other options");
+ return parseMRIScript();
+ }
+
+ getOptions();
// Keep track of number of operations. We can only specify one
// per execution.
// Keep track of which operation was requested
ArchiveOperation Operation;
+ bool MaybeJustCreateSymTab = false;
+
for(unsigned i=0; i<Options.size(); ++i) {
switch(Options[i]) {
case 'd': ++NumOperations; Operation = Delete; break;
case 'c': Create = true; break;
case 'l': /* accepted but unused */ break;
case 'o': OriginalDates = true; break;
- case 's': break; // Ignore for now.
- case 'S': break; // Ignore for now.
+ case 's':
+ Symtab = true;
+ MaybeJustCreateSymTab = true;
+ break;
+ case 'S':
+ Symtab = false;
+ break;
case 'u': OnlyUpdate = true; break;
case 'v': Verbose = true; break;
case 'a':
// Everything on the command line at this point is a member.
getMembers();
+ if (NumOperations == 0 && MaybeJustCreateSymTab) {
+ NumOperations = 1;
+ Operation = CreateSymTab;
+ if (!Members.empty())
+ show_help("The s operation takes only an archive as argument");
+ }
+
// Perform various checks on the operation/modifier specification
// to make sure we are dealing with a legal request.
if (NumOperations == 0)
return Operation;
}
-// buildPaths - Convert the strings in the Members vector to sys::Path objects
-// and make sure they are valid and exist exist. This check is only needed for
-// the operations that add/replace files to the archive ('q' and 'r')
-bool buildPaths(bool checkExistence, std::string* ErrMsg) {
- for (unsigned i = 0; i < Members.size(); i++) {
- std::string aPath = Members[i];
- if (checkExistence) {
- bool IsDirectory;
- error_code EC = sys::fs::is_directory(aPath, IsDirectory);
- if (EC)
- fail(aPath + ": " + EC.message());
- if (IsDirectory)
- fail(aPath + " Is a directory");
-
- Paths.insert(aPath);
- } else {
- Paths.insert(aPath);
- }
- }
- return false;
-}
-
-// doPrint - Implements the 'p' operation. This function traverses the archive
-// looking for members that match the path list. It is careful to uncompress
-// things that should be and to skip bitcode files unless the 'k' modifier was
-// given.
-bool doPrint(std::string* ErrMsg) {
- if (buildPaths(false, ErrMsg))
- return true;
- for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
- I != E; ++I ) {
- if (Paths.empty() ||
- (std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end())) {
- const char *data = reinterpret_cast<const char *>(I->getData());
-
- // Skip things that don't make sense to print
- if (I->isSVR4SymbolTable() || I->isBSD4SymbolTable())
- continue;
-
- if (Verbose)
- outs() << "Printing " << I->getPath().str() << "\n";
+// Implements the 'p' operation. This function traverses the archive
+// looking for members that match the path list.
+static void doPrint(StringRef Name, object::Archive::child_iterator I) {
+ if (Verbose)
+ outs() << "Printing " << Name << "\n";
- unsigned len = I->getSize();
- outs().write(data, len);
- }
- }
- return false;
+ StringRef Data = I->getBuffer();
+ outs().write(Data.data(), Data.size());
}
-// putMode - utility function for printing out the file mode when the 't'
-// operation is in verbose mode.
-void
-printMode(unsigned mode) {
+// Utility function for printing out the file mode when the 't' operation is in
+// verbose mode.
+static void printMode(unsigned mode) {
if (mode & 004)
outs() << "r";
else
outs() << "-";
}
-// doDisplayTable - Implement the 't' operation. This function prints out just
+// Implement the 't' operation. This function prints out just
// the file names of each of the members. However, if verbose mode is requested
// ('v' modifier) then the file type, permission mode, user, group, size, and
// modification time are also printed.
-bool
-doDisplayTable(std::string* ErrMsg) {
- if (buildPaths(false, ErrMsg))
- return true;
- for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
- I != E; ++I ) {
- if (Paths.empty() ||
- (std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end())) {
- if (Verbose) {
- unsigned mode = I->getMode();
- printMode((mode >> 6) & 007);
- printMode((mode >> 3) & 007);
- printMode(mode & 007);
- outs() << ' ' << I->getUser();
- outs() << "/" << I->getGroup();
- outs() << ' ' << format("%6llu", I->getSize());
- sys::TimeValue ModTime = I->getModTime();
- outs() << " " << ModTime.str();
- outs() << " " << I->getPath().str() << "\n";
- } else {
- outs() << I->getPath().str() << "\n";
- }
- }
+static void doDisplayTable(StringRef Name, object::Archive::child_iterator I) {
+ if (Verbose) {
+ sys::fs::perms Mode = I->getAccessMode();
+ printMode((Mode >> 6) & 007);
+ printMode((Mode >> 3) & 007);
+ printMode(Mode & 007);
+ outs() << ' ' << I->getUID();
+ outs() << '/' << I->getGID();
+ outs() << ' ' << format("%6llu", I->getSize());
+ outs() << ' ' << I->getLastModified().str();
+ outs() << ' ';
}
- return false;
+ outs() << Name << "\n";
}
-// doExtract - Implement the 'x' operation. This function extracts files back to
-// the file system.
-bool
-doExtract(std::string* ErrMsg) {
- if (buildPaths(false, ErrMsg))
- return true;
- for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
- I != E; ++I ) {
- if (Paths.empty() ||
- (std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end())) {
-
- // Open up a file stream for writing
- int OpenFlags = O_TRUNC | O_WRONLY | O_CREAT;
-#ifdef O_BINARY
- OpenFlags |= O_BINARY;
-#endif
+// Implement the 'x' operation. This function extracts files back to the file
+// system.
+static void doExtract(StringRef Name, object::Archive::child_iterator I) {
+ // Retain the original mode.
+ sys::fs::perms Mode = I->getAccessMode();
+ SmallString<128> Storage = Name;
- // Retain the original mode.
- sys::fs::perms Mode = sys::fs::perms(I->getMode());
+ int FD;
+ failIfError(
+ sys::fs::openFileForWrite(Storage.c_str(), FD, sys::fs::F_None, Mode),
+ Storage.c_str());
- int FD = open(I->getPath().str().c_str(), OpenFlags, Mode);
- if (FD < 0)
- return true;
+ {
+ raw_fd_ostream file(FD, false);
- {
- raw_fd_ostream file(FD, false);
+ // Get the data and its length
+ StringRef Data = I->getBuffer();
- // Get the data and its length
- const char* data = reinterpret_cast<const char*>(I->getData());
- unsigned len = I->getSize();
+ // Write the data.
+ file.write(Data.data(), Data.size());
+ }
- // Write the data.
- file.write(data, len);
- }
+ // If we're supposed to retain the original modification times, etc. do so
+ // now.
+ if (OriginalDates)
+ failIfError(
+ sys::fs::setLastModificationAndAccessTime(FD, I->getLastModified()));
- // If we're supposed to retain the original modification times, etc. do so
- // now.
- if (OriginalDates) {
- error_code EC =
- sys::fs::setLastModificationAndAccessTime(FD, I->getModTime());
- if (EC)
- fail(EC.message());
- }
- if (close(FD))
- return true;
- }
- }
- return false;
+ if (close(FD))
+ fail("Could not close the file");
}
-// doDelete - Implement the delete operation. This function deletes zero or more
-// members from the archive. Note that if the count is specified, there should
-// be no more than one path in the Paths list or else this algorithm breaks.
-// That check is enforced in parseCommandLine (above).
-bool
-doDelete(std::string* ErrMsg) {
- if (buildPaths(false, ErrMsg))
- return true;
- if (Paths.empty())
+static bool shouldCreateArchive(ArchiveOperation Op) {
+ switch (Op) {
+ case Print:
+ case Delete:
+ case Move:
+ case DisplayTable:
+ case Extract:
+ case CreateSymTab:
return false;
- for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
- I != E; ) {
- if (std::find(Paths.begin(), Paths.end(), I->getPath()) != Paths.end()) {
- Archive::iterator J = I;
- ++I;
- TheArchive->erase(J);
- } else {
- ++I;
+
+ case QuickAppend:
+ case ReplaceOrInsert:
+ return true;
+ }
+
+ llvm_unreachable("Missing entry in covered switch.");
+}
+
+static void performReadOperation(ArchiveOperation Operation,
+ object::Archive *OldArchive) {
+ for (object::Archive::child_iterator I = OldArchive->child_begin(),
+ E = OldArchive->child_end();
+ I != E; ++I) {
+ ErrorOr<StringRef> NameOrErr = I->getName();
+ failIfError(NameOrErr.getError());
+ StringRef Name = NameOrErr.get();
+
+ if (!Members.empty() &&
+ std::find(Members.begin(), Members.end(), Name) == Members.end())
+ continue;
+
+ switch (Operation) {
+ default:
+ llvm_unreachable("Not a read operation");
+ case Print:
+ doPrint(Name, I);
+ break;
+ case DisplayTable:
+ doDisplayTable(Name, I);
+ break;
+ case Extract:
+ doExtract(Name, I);
+ break;
}
}
+}
- // We're done editting, reconstruct the archive.
- if (TheArchive->writeToDisk(ErrMsg))
- return true;
- return false;
+namespace {
+class NewArchiveIterator {
+ bool IsNewMember;
+ StringRef Name;
+
+ object::Archive::child_iterator OldI;
+
+ StringRef NewFilename;
+ mutable int NewFD;
+ mutable sys::fs::file_status NewStatus;
+
+public:
+ NewArchiveIterator(object::Archive::child_iterator I, StringRef Name);
+ NewArchiveIterator(StringRef I, StringRef Name);
+ NewArchiveIterator();
+ bool isNewMember() const;
+ StringRef getName() const;
+
+ object::Archive::child_iterator getOld() const;
+
+ StringRef getNew() const;
+ int getFD() const;
+ const sys::fs::file_status &getStatus() const;
+};
}
-// doMore - Implement the move operation. This function re-arranges just the
-// order of the archive members so that when the archive is written the move
-// of the members is accomplished. Note the use of the RelPos variable to
-// determine where the items should be moved to.
-bool
-doMove(std::string* ErrMsg) {
- if (buildPaths(false, ErrMsg))
- return true;
+NewArchiveIterator::NewArchiveIterator() {}
+
+NewArchiveIterator::NewArchiveIterator(object::Archive::child_iterator I,
+ StringRef Name)
+ : IsNewMember(false), Name(Name), OldI(I) {}
+
+NewArchiveIterator::NewArchiveIterator(StringRef NewFilename, StringRef Name)
+ : IsNewMember(true), Name(Name), NewFilename(NewFilename), NewFD(-1) {}
+
+StringRef NewArchiveIterator::getName() const { return Name; }
+
+bool NewArchiveIterator::isNewMember() const { return IsNewMember; }
+
+object::Archive::child_iterator NewArchiveIterator::getOld() const {
+ assert(!IsNewMember);
+ return OldI;
+}
+
+StringRef NewArchiveIterator::getNew() const {
+ assert(IsNewMember);
+ return NewFilename;
+}
+
+int NewArchiveIterator::getFD() const {
+ assert(IsNewMember);
+ if (NewFD != -1)
+ return NewFD;
+ failIfError(sys::fs::openFileForRead(NewFilename, NewFD), NewFilename);
+ assert(NewFD != -1);
+
+ failIfError(sys::fs::status(NewFD, NewStatus), NewFilename);
+
+ // Opening a directory doesn't make sense. Let it fail.
+ // Linux cannot open directories with open(2), although
+ // cygwin and *bsd can.
+ if (NewStatus.type() == sys::fs::file_type::directory_file)
+ failIfError(make_error_code(errc::is_a_directory), NewFilename);
+
+ return NewFD;
+}
+
+const sys::fs::file_status &NewArchiveIterator::getStatus() const {
+ assert(IsNewMember);
+ assert(NewFD != -1 && "Must call getFD first");
+ return NewStatus;
+}
+
+template <typename T>
+void addMember(std::vector<NewArchiveIterator> &Members, T I, StringRef Name,
+ int Pos = -1) {
+ NewArchiveIterator NI(I, Name);
+ if (Pos == -1)
+ Members.push_back(NI);
+ else
+ Members[Pos] = NI;
+}
+
+enum InsertAction {
+ IA_AddOldMember,
+ IA_AddNewMeber,
+ IA_Delete,
+ IA_MoveOldMember,
+ IA_MoveNewMember
+};
+
+static InsertAction computeInsertAction(ArchiveOperation Operation,
+ object::Archive::child_iterator I,
+ StringRef Name,
+ std::vector<StringRef>::iterator &Pos) {
+ if (Operation == QuickAppend || Members.empty())
+ return IA_AddOldMember;
+
+ auto MI =
+ std::find_if(Members.begin(), Members.end(), [Name](StringRef Path) {
+ return Name == sys::path::filename(Path);
+ });
- // By default and convention the place to move members to is the end of the
- // archive.
- Archive::iterator moveto_spot = TheArchive->end();
-
- // However, if the relative positioning modifiers were used, we need to scan
- // the archive to find the member in question. If we don't find it, its no
- // crime, we just move to the end.
- if (AddBefore || AddAfter) {
- for (Archive::iterator I = TheArchive->begin(), E= TheArchive->end();
- I != E; ++I ) {
- if (RelPos == I->getPath().str()) {
- if (AddAfter) {
- moveto_spot = I;
- moveto_spot++;
- } else {
- moveto_spot = I;
- }
+ if (MI == Members.end())
+ return IA_AddOldMember;
+
+ Pos = MI;
+
+ if (Operation == Delete)
+ return IA_Delete;
+
+ if (Operation == Move)
+ return IA_MoveOldMember;
+
+ if (Operation == ReplaceOrInsert) {
+ StringRef PosName = sys::path::filename(RelPos);
+ if (!OnlyUpdate) {
+ if (PosName.empty())
+ return IA_AddNewMeber;
+ return IA_MoveNewMember;
+ }
+
+ // We could try to optimize this to a fstat, but it is not a common
+ // operation.
+ sys::fs::file_status Status;
+ failIfError(sys::fs::status(*MI, Status), *MI);
+ if (Status.getLastModificationTime() < I->getLastModified()) {
+ if (PosName.empty())
+ return IA_AddOldMember;
+ return IA_MoveOldMember;
+ }
+
+ if (PosName.empty())
+ return IA_AddNewMeber;
+ return IA_MoveNewMember;
+ }
+ llvm_unreachable("No such operation");
+}
+
+// We have to walk this twice and computing it is not trivial, so creating an
+// explicit std::vector is actually fairly efficient.
+static std::vector<NewArchiveIterator>
+computeNewArchiveMembers(ArchiveOperation Operation,
+ object::Archive *OldArchive) {
+ std::vector<NewArchiveIterator> Ret;
+ std::vector<NewArchiveIterator> Moved;
+ int InsertPos = -1;
+ StringRef PosName = sys::path::filename(RelPos);
+ if (OldArchive) {
+ for (object::Archive::child_iterator I = OldArchive->child_begin(),
+ E = OldArchive->child_end();
+ I != E; ++I) {
+ int Pos = Ret.size();
+ ErrorOr<StringRef> NameOrErr = I->getName();
+ failIfError(NameOrErr.getError());
+ StringRef Name = NameOrErr.get();
+ if (Name == PosName) {
+ assert(AddAfter || AddBefore);
+ if (AddBefore)
+ InsertPos = Pos;
+ else
+ InsertPos = Pos + 1;
+ }
+
+ std::vector<StringRef>::iterator MemberI = Members.end();
+ InsertAction Action = computeInsertAction(Operation, I, Name, MemberI);
+ switch (Action) {
+ case IA_AddOldMember:
+ addMember(Ret, I, Name);
+ break;
+ case IA_AddNewMeber:
+ addMember(Ret, *MemberI, Name);
+ break;
+ case IA_Delete:
+ break;
+ case IA_MoveOldMember:
+ addMember(Moved, I, Name);
+ break;
+ case IA_MoveNewMember:
+ addMember(Moved, *MemberI, Name);
break;
}
+ if (MemberI != Members.end())
+ Members.erase(MemberI);
}
}
- // Keep a list of the paths remaining to be moved
- std::set<std::string> remaining(Paths);
-
- // Scan the archive again, this time looking for the members to move to the
- // moveto_spot.
- for (Archive::iterator I = TheArchive->begin(), E= TheArchive->end();
- I != E && !remaining.empty(); ++I ) {
- std::set<std::string>::iterator found =
- std::find(remaining.begin(),remaining.end(), I->getPath());
- if (found != remaining.end()) {
- if (I != moveto_spot)
- TheArchive->splice(moveto_spot,*TheArchive,I);
- remaining.erase(found);
- }
+ if (Operation == Delete)
+ return Ret;
+
+ if (!RelPos.empty() && InsertPos == -1)
+ fail("Insertion point not found");
+
+ if (RelPos.empty())
+ InsertPos = Ret.size();
+
+ assert(unsigned(InsertPos) <= Ret.size());
+ Ret.insert(Ret.begin() + InsertPos, Moved.begin(), Moved.end());
+
+ Ret.insert(Ret.begin() + InsertPos, Members.size(), NewArchiveIterator());
+ int Pos = InsertPos;
+ for (auto &Member : Members) {
+ StringRef Name = sys::path::filename(Member);
+ addMember(Ret, Member, Name, Pos);
+ ++Pos;
}
- // We're done editting, reconstruct the archive.
- if (TheArchive->writeToDisk(ErrMsg))
- return true;
- return false;
+ return Ret;
}
-// doQuickAppend - Implements the 'q' operation. This function just
-// indiscriminantly adds the members to the archive and rebuilds it.
-bool
-doQuickAppend(std::string* ErrMsg) {
- // Get the list of paths to append.
- if (buildPaths(true, ErrMsg))
- return true;
- if (Paths.empty())
- return false;
+template <typename T>
+static void printWithSpacePadding(raw_fd_ostream &OS, T Data, unsigned Size,
+ bool MayTruncate = false) {
+ uint64_t OldPos = OS.tell();
+ OS << Data;
+ unsigned SizeSoFar = OS.tell() - OldPos;
+ if (Size > SizeSoFar) {
+ unsigned Remaining = Size - SizeSoFar;
+ for (unsigned I = 0; I < Remaining; ++I)
+ OS << ' ';
+ } else if (Size < SizeSoFar) {
+ assert(MayTruncate && "Data doesn't fit in Size");
+ // Some of the data this is used for (like UID) can be larger than the
+ // space available in the archive format. Truncate in that case.
+ OS.seek(OldPos + Size);
+ }
+}
- // Append them quickly.
- for (std::set<std::string>::iterator PI = Paths.begin(), PE = Paths.end();
- PI != PE; ++PI) {
- if (TheArchive->addFileBefore(*PI, TheArchive->end(), ErrMsg))
- return true;
+static void print32BE(raw_fd_ostream &Out, unsigned Val) {
+ for (int I = 3; I >= 0; --I) {
+ char V = (Val >> (8 * I)) & 0xff;
+ Out << V;
}
+}
- // We're done editting, reconstruct the archive.
- if (TheArchive->writeToDisk(ErrMsg))
- return true;
- return false;
+static void printRestOfMemberHeader(raw_fd_ostream &Out,
+ const sys::TimeValue &ModTime, unsigned UID,
+ unsigned GID, unsigned Perms,
+ unsigned Size) {
+ printWithSpacePadding(Out, ModTime.toEpochTime(), 12);
+ printWithSpacePadding(Out, UID, 6, true);
+ printWithSpacePadding(Out, GID, 6, true);
+ printWithSpacePadding(Out, format("%o", Perms), 8);
+ printWithSpacePadding(Out, Size, 10);
+ Out << "`\n";
}
-// doReplaceOrInsert - Implements the 'r' operation. This function will replace
-// any existing files or insert new ones into the archive.
-bool
-doReplaceOrInsert(std::string* ErrMsg) {
+static void printMemberHeader(raw_fd_ostream &Out, StringRef Name,
+ const sys::TimeValue &ModTime, unsigned UID,
+ unsigned GID, unsigned Perms, unsigned Size) {
+ printWithSpacePadding(Out, Twine(Name) + "/", 16);
+ printRestOfMemberHeader(Out, ModTime, UID, GID, Perms, Size);
+}
- // Build the list of files to be added/replaced.
- if (buildPaths(true, ErrMsg))
- return true;
- if (Paths.empty())
- return false;
+static void printMemberHeader(raw_fd_ostream &Out, unsigned NameOffset,
+ const sys::TimeValue &ModTime, unsigned UID,
+ unsigned GID, unsigned Perms, unsigned Size) {
+ Out << '/';
+ printWithSpacePadding(Out, NameOffset, 15);
+ printRestOfMemberHeader(Out, ModTime, UID, GID, Perms, Size);
+}
- // Keep track of the paths that remain to be inserted.
- std::set<std::string> remaining(Paths);
+static void writeStringTable(raw_fd_ostream &Out,
+ ArrayRef<NewArchiveIterator> Members,
+ std::vector<unsigned> &StringMapIndexes) {
+ unsigned StartOffset = 0;
+ for (ArrayRef<NewArchiveIterator>::iterator I = Members.begin(),
+ E = Members.end();
+ I != E; ++I) {
+ StringRef Name = I->getName();
+ if (Name.size() < 16)
+ continue;
+ if (StartOffset == 0) {
+ printWithSpacePadding(Out, "//", 58);
+ Out << "`\n";
+ StartOffset = Out.tell();
+ }
+ StringMapIndexes.push_back(Out.tell() - StartOffset);
+ Out << Name << "/\n";
+ }
+ if (StartOffset == 0)
+ return;
+ if (Out.tell() % 2)
+ Out << '\n';
+ int Pos = Out.tell();
+ Out.seek(StartOffset - 12);
+ printWithSpacePadding(Out, Pos - StartOffset, 10);
+ Out.seek(Pos);
+}
- // Default the insertion spot to the end of the archive
- Archive::iterator insert_spot = TheArchive->end();
+static void
+writeSymbolTable(raw_fd_ostream &Out, ArrayRef<NewArchiveIterator> Members,
+ ArrayRef<MemoryBufferRef> Buffers,
+ std::vector<std::pair<unsigned, unsigned>> &MemberOffsetRefs) {
+ unsigned StartOffset = 0;
+ unsigned MemberNum = 0;
+ std::string NameBuf;
+ raw_string_ostream NameOS(NameBuf);
+ unsigned NumSyms = 0;
+ LLVMContext &Context = getGlobalContext();
+ for (ArrayRef<NewArchiveIterator>::iterator I = Members.begin(),
+ E = Members.end();
+ I != E; ++I, ++MemberNum) {
+ MemoryBufferRef MemberBuffer = Buffers[MemberNum];
+ ErrorOr<std::unique_ptr<object::SymbolicFile>> ObjOrErr =
+ object::SymbolicFile::createSymbolicFile(
+ MemberBuffer, sys::fs::file_magic::unknown, &Context);
+ if (!ObjOrErr)
+ continue; // FIXME: check only for "not an object file" errors.
+ object::SymbolicFile &Obj = *ObjOrErr.get();
+
+ if (!StartOffset) {
+ printMemberHeader(Out, "", sys::TimeValue::now(), 0, 0, 0, 0);
+ StartOffset = Out.tell();
+ print32BE(Out, 0);
+ }
- // Iterate over the archive contents
- for (Archive::iterator I = TheArchive->begin(), E = TheArchive->end();
- I != E && !remaining.empty(); ++I ) {
+ for (const object::BasicSymbolRef &S : Obj.symbols()) {
+ uint32_t Symflags = S.getFlags();
+ if (Symflags & object::SymbolRef::SF_FormatSpecific)
+ continue;
+ if (!(Symflags & object::SymbolRef::SF_Global))
+ continue;
+ if (Symflags & object::SymbolRef::SF_Undefined)
+ continue;
+ failIfError(S.printName(NameOS));
+ NameOS << '\0';
+ ++NumSyms;
+ MemberOffsetRefs.push_back(std::make_pair(Out.tell(), MemberNum));
+ print32BE(Out, 0);
+ }
+ }
+ Out << NameOS.str();
- // Determine if this archive member matches one of the paths we're trying
- // to replace.
+ if (StartOffset == 0)
+ return;
- std::set<std::string>::iterator found = remaining.end();
- for (std::set<std::string>::iterator RI = remaining.begin(),
- RE = remaining.end(); RI != RE; ++RI ) {
- std::string compare(sys::path::filename(*RI));
- if (compare == I->getPath().str()) {
- found = RI;
- break;
- }
- }
+ if (Out.tell() % 2)
+ Out << '\0';
- if (found != remaining.end()) {
- sys::fs::file_status Status;
- error_code EC = sys::fs::status(*found, Status);
- if (EC)
- return true;
- if (!sys::fs::is_directory(Status)) {
- if (OnlyUpdate) {
- // Replace the item only if it is newer.
- if (Status.getLastModificationTime() > I->getModTime())
- if (I->replaceWith(*found, ErrMsg))
- return true;
- } else {
- // Replace the item regardless of time stamp
- if (I->replaceWith(*found, ErrMsg))
- return true;
- }
- } else {
- // We purposefully ignore directories.
- }
+ unsigned Pos = Out.tell();
+ Out.seek(StartOffset - 12);
+ printWithSpacePadding(Out, Pos - StartOffset, 10);
+ Out.seek(StartOffset);
+ print32BE(Out, NumSyms);
+ Out.seek(Pos);
+}
- // Remove it from our "to do" list
- remaining.erase(found);
+static void performWriteOperation(ArchiveOperation Operation,
+ object::Archive *OldArchive) {
+ SmallString<128> TmpArchive;
+ failIfError(sys::fs::createUniqueFile(ArchiveName + ".temp-archive-%%%%%%%.a",
+ TmpArchiveFD, TmpArchive));
+
+ TemporaryOutput = TmpArchive.c_str();
+ tool_output_file Output(TemporaryOutput, TmpArchiveFD);
+ raw_fd_ostream &Out = Output.os();
+ Out << "!<arch>\n";
+
+ std::vector<NewArchiveIterator> NewMembers =
+ computeNewArchiveMembers(Operation, OldArchive);
+
+ std::vector<std::pair<unsigned, unsigned> > MemberOffsetRefs;
+
+ std::vector<std::unique_ptr<MemoryBuffer>> Buffers;
+ std::vector<MemoryBufferRef> Members;
+
+ for (unsigned I = 0, N = NewMembers.size(); I < N; ++I) {
+ NewArchiveIterator &Member = NewMembers[I];
+ MemoryBufferRef MemberRef;
+
+ if (Member.isNewMember()) {
+ StringRef Filename = Member.getNew();
+ int FD = Member.getFD();
+ const sys::fs::file_status &Status = Member.getStatus();
+ ErrorOr<std::unique_ptr<MemoryBuffer>> MemberBufferOrErr =
+ MemoryBuffer::getOpenFile(FD, Filename, Status.getSize(), false);
+ failIfError(MemberBufferOrErr.getError(), Filename);
+ Buffers.push_back(std::move(MemberBufferOrErr.get()));
+ MemberRef = Buffers.back()->getMemBufferRef();
+ } else {
+ object::Archive::child_iterator OldMember = Member.getOld();
+ ErrorOr<MemoryBufferRef> MemberBufferOrErr =
+ OldMember->getMemoryBufferRef();
+ failIfError(MemberBufferOrErr.getError());
+ MemberRef = MemberBufferOrErr.get();
}
+ Members.push_back(MemberRef);
+ }
- // Determine if this is the place where we should insert
- if (AddBefore && RelPos == I->getPath().str())
- insert_spot = I;
- else if (AddAfter && RelPos == I->getPath().str()) {
- insert_spot = I;
- insert_spot++;
- }
+ if (Symtab) {
+ writeSymbolTable(Out, NewMembers, Members, MemberOffsetRefs);
}
- // If we didn't replace all the members, some will remain and need to be
- // inserted at the previously computed insert-spot.
- if (!remaining.empty()) {
- for (std::set<std::string>::iterator PI = remaining.begin(),
- PE = remaining.end(); PI != PE; ++PI) {
- if (TheArchive->addFileBefore(*PI, insert_spot, ErrMsg))
- return true;
+ std::vector<unsigned> StringMapIndexes;
+ writeStringTable(Out, NewMembers, StringMapIndexes);
+
+ std::vector<std::pair<unsigned, unsigned> >::iterator MemberRefsI =
+ MemberOffsetRefs.begin();
+
+ unsigned MemberNum = 0;
+ unsigned LongNameMemberNum = 0;
+ for (std::vector<NewArchiveIterator>::iterator I = NewMembers.begin(),
+ E = NewMembers.end();
+ I != E; ++I, ++MemberNum) {
+
+ unsigned Pos = Out.tell();
+ while (MemberRefsI != MemberOffsetRefs.end() &&
+ MemberRefsI->second == MemberNum) {
+ Out.seek(MemberRefsI->first);
+ print32BE(Out, Pos);
+ ++MemberRefsI;
+ }
+ Out.seek(Pos);
+
+ MemoryBufferRef File = Members[MemberNum];
+ if (I->isNewMember()) {
+ StringRef FileName = I->getNew();
+ const sys::fs::file_status &Status = I->getStatus();
+
+ StringRef Name = sys::path::filename(FileName);
+ if (Name.size() < 16)
+ printMemberHeader(Out, Name, Status.getLastModificationTime(),
+ Status.getUser(), Status.getGroup(),
+ Status.permissions(), Status.getSize());
+ else
+ printMemberHeader(Out, StringMapIndexes[LongNameMemberNum++],
+ Status.getLastModificationTime(), Status.getUser(),
+ Status.getGroup(), Status.permissions(),
+ Status.getSize());
+ } else {
+ object::Archive::child_iterator OldMember = I->getOld();
+ StringRef Name = I->getName();
+
+ if (Name.size() < 16)
+ printMemberHeader(Out, Name, OldMember->getLastModified(),
+ OldMember->getUID(), OldMember->getGID(),
+ OldMember->getAccessMode(), OldMember->getSize());
+ else
+ printMemberHeader(Out, StringMapIndexes[LongNameMemberNum++],
+ OldMember->getLastModified(), OldMember->getUID(),
+ OldMember->getGID(), OldMember->getAccessMode(),
+ OldMember->getSize());
}
+
+ Out << File.getBuffer();
+
+ if (Out.tell() % 2)
+ Out << '\n';
}
- // We're done editting, reconstruct the archive.
- if (TheArchive->writeToDisk(ErrMsg))
- return true;
- return false;
+ Output.keep();
+ Out.close();
+ sys::fs::rename(TemporaryOutput, ArchiveName);
+ TemporaryOutput = nullptr;
}
-bool shouldCreateArchive(ArchiveOperation Op) {
- switch (Op) {
+static void createSymbolTable(object::Archive *OldArchive) {
+ // When an archive is created or modified, if the s option is given, the
+ // resulting archive will have a current symbol table. If the S option
+ // is given, it will have no symbol table.
+ // In summary, we only need to update the symbol table if we have none.
+ // This is actually very common because of broken build systems that think
+ // they have to run ranlib.
+ if (OldArchive->hasSymbolTable())
+ return;
+
+ performWriteOperation(CreateSymTab, OldArchive);
+}
+
+static void performOperation(ArchiveOperation Operation,
+ object::Archive *OldArchive) {
+ switch (Operation) {
case Print:
- case Delete:
- case Move:
case DisplayTable:
case Extract:
- return false;
+ performReadOperation(Operation, OldArchive);
+ return;
+ case Delete:
+ case Move:
case QuickAppend:
case ReplaceOrInsert:
- return true;
+ performWriteOperation(Operation, OldArchive);
+ return;
+ case CreateSymTab:
+ createSymbolTable(OldArchive);
+ return;
+ }
+ llvm_unreachable("Unknown operation.");
+}
+
+static int performOperation(ArchiveOperation Operation) {
+ // Create or open the archive object.
+ ErrorOr<std::unique_ptr<MemoryBuffer>> Buf =
+ MemoryBuffer::getFile(ArchiveName, -1, false);
+ std::error_code EC = Buf.getError();
+ if (EC && EC != errc::no_such_file_or_directory) {
+ errs() << ToolName << ": error opening '" << ArchiveName
+ << "': " << EC.message() << "!\n";
+ return 1;
}
- llvm_unreachable("Missing entry in covered switch.");
+ if (!EC) {
+ object::Archive Archive(Buf.get()->getMemBufferRef(), EC);
+
+ if (EC) {
+ errs() << ToolName << ": error loading '" << ArchiveName
+ << "': " << EC.message() << "!\n";
+ return 1;
+ }
+ performOperation(Operation, &Archive);
+ return 0;
+ }
+
+ assert(EC == errc::no_such_file_or_directory);
+
+ if (!shouldCreateArchive(Operation)) {
+ failIfError(EC, Twine("error loading '") + ArchiveName + "'");
+ } else {
+ if (!Create) {
+ // Produce a warning if we should and we're creating the archive
+ errs() << ToolName << ": creating " << ArchiveName << "\n";
+ }
+ }
+
+ performOperation(Operation, nullptr);
+ return 0;
+}
+
+int ar_main(char **argv) {
+ // Do our own parsing of the command line because the CommandLine utility
+ // can't handle the grouped positional parameters without a dash.
+ ArchiveOperation Operation = parseCommandLine();
+ return performOperation(Operation);
+}
+
+int ranlib_main() {
+ if (RestOfArgs.size() != 1)
+ fail(ToolName + "takes just one archive as argument");
+ ArchiveName = RestOfArgs[0];
+ return performOperation(CreateSymTab);
}
-// main - main program for llvm-ar .. see comments in the code
int main(int argc, char **argv) {
- program_name = argv[0];
+ ToolName = argv[0];
// Print a stack trace if we signal out.
sys::PrintStackTraceOnErrorSignal();
PrettyStackTraceProgram X(argc, argv);
- LLVMContext &Context = getGlobalContext();
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
// Have the command line options parsed and handle things
" This program archives bitcode files into single libraries\n"
);
- int exitCode = 0;
-
- // Do our own parsing of the command line because the CommandLine utility
- // can't handle the grouped positional parameters without a dash.
- ArchiveOperation Operation = parseCommandLine();
-
- // Create or open the archive object.
- if (shouldCreateArchive(Operation) && !llvm::sys::fs::exists(ArchiveName)) {
- // Produce a warning if we should and we're creating the archive
- if (!Create)
- errs() << argv[0] << ": creating " << ArchiveName << "\n";
- TheArchive = Archive::CreateEmpty(ArchiveName, Context);
- TheArchive->writeToDisk();
- }
-
- if (!TheArchive) {
- std::string Error;
- TheArchive = Archive::OpenAndLoad(ArchiveName, Context, &Error);
- if (TheArchive == 0) {
- errs() << argv[0] << ": error loading '" << ArchiveName << "': "
- << Error << "!\n";
- return 1;
- }
- }
-
- // Make sure we're not fooling ourselves.
- assert(TheArchive && "Unable to instantiate the archive");
-
- // Perform the operation
- std::string ErrMsg;
- bool haveError = false;
- switch (Operation) {
- case Print: haveError = doPrint(&ErrMsg); break;
- case Delete: haveError = doDelete(&ErrMsg); break;
- case Move: haveError = doMove(&ErrMsg); break;
- case QuickAppend: haveError = doQuickAppend(&ErrMsg); break;
- case ReplaceOrInsert: haveError = doReplaceOrInsert(&ErrMsg); break;
- case DisplayTable: haveError = doDisplayTable(&ErrMsg); break;
- case Extract: haveError = doExtract(&ErrMsg); break;
- }
- if (haveError) {
- errs() << argv[0] << ": " << ErrMsg << "\n";
- return 1;
- }
-
- delete TheArchive;
- TheArchive = 0;
+ llvm::InitializeAllTargetInfos();
+ llvm::InitializeAllTargetMCs();
+ llvm::InitializeAllAsmParsers();
- // Return result code back to operating system.
- return exitCode;
+ StringRef Stem = sys::path::stem(ToolName);
+ if (Stem.find("ar") != StringRef::npos)
+ return ar_main(argv);
+ if (Stem.find("ranlib") != StringRef::npos)
+ return ranlib_main();
+ fail("Not ranlib or ar!");
}
projects / oota-llvm.git / blobdiff