[llvm] r277540 - More fixes to get good error messages for bad archives.
Kevin Enderby via llvm-commits
llvm-commits at lists.llvm.org
Tue Aug 2 15:58:55 PDT 2016
Author: enderby
Date: Tue Aug 2 17:58:55 2016
New Revision: 277540
URL: http://llvm.org/viewvc/llvm-project?rev=277540&view=rev
Log:
More fixes to get good error messages for bad archives.
Fixed the last incorrect uses of llvm_unreachable() in the code
which were actually just cases of errors in the input Archives.
Added:
llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus11.a
llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus12.a
llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus13.a
llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus14.a
Modified:
llvm/trunk/include/llvm/Object/Archive.h
llvm/trunk/lib/Object/Archive.cpp
llvm/trunk/lib/Object/ArchiveWriter.cpp
llvm/trunk/test/tools/llvm-objdump/malformed-archives.test
llvm/trunk/tools/dsymutil/BinaryHolder.cpp
llvm/trunk/tools/llvm-ar/llvm-ar.cpp
llvm/trunk/tools/llvm-objdump/MachODump.cpp
Modified: llvm/trunk/include/llvm/Object/Archive.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Object/Archive.h?rev=277540&r1=277539&r2=277540&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Object/Archive.h (original)
+++ llvm/trunk/include/llvm/Object/Archive.h Tue Aug 2 17:58:55 2016
@@ -44,14 +44,14 @@ public:
/// Members are not larger than 4GB.
Expected<uint32_t> getSize() const;
- sys::fs::perms getAccessMode() const;
- sys::TimeValue getLastModified() const;
+ Expected<sys::fs::perms> getAccessMode() const;
+ Expected<sys::TimeValue> getLastModified() const;
llvm::StringRef getRawLastModified() const {
return StringRef(ArMemHdr->LastModified,
sizeof(ArMemHdr->LastModified)).rtrim(' ');
}
- unsigned getUID() const;
- unsigned getGID() const;
+ Expected<unsigned> getUID() const;
+ Expected<unsigned> getGID() const;
// This returns the size of the private struct ArMemHdrType
uint64_t getSizeOf() const {
@@ -102,15 +102,15 @@ public:
Expected<StringRef> getName() const;
ErrorOr<std::string> getFullName() const;
Expected<StringRef> getRawName() const { return Header.getRawName(); }
- sys::TimeValue getLastModified() const {
+ Expected<sys::TimeValue> getLastModified() const {
return Header.getLastModified();
}
StringRef getRawLastModified() const {
return Header.getRawLastModified();
}
- unsigned getUID() const { return Header.getUID(); }
- unsigned getGID() const { return Header.getGID(); }
- sys::fs::perms getAccessMode() const {
+ Expected<unsigned> getUID() const { return Header.getUID(); }
+ Expected<unsigned> getGID() const { return Header.getGID(); }
+ Expected<sys::fs::perms> getAccessMode() const {
return Header.getAccessMode();
}
/// \return the size of the archive member without the header or padding.
Modified: llvm/trunk/lib/Object/Archive.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Object/Archive.cpp?rev=277540&r1=277539&r2=277540&view=diff
==============================================================================
--- llvm/trunk/lib/Object/Archive.cpp (original)
+++ llvm/trunk/lib/Object/Archive.cpp Tue Aug 2 17:58:55 2016
@@ -221,43 +221,81 @@ Expected<uint32_t> ArchiveMemberHeader::
return Ret;
}
-sys::fs::perms ArchiveMemberHeader::getAccessMode() const {
+Expected<sys::fs::perms> ArchiveMemberHeader::getAccessMode() const {
unsigned Ret;
if (StringRef(ArMemHdr->AccessMode,
- sizeof(ArMemHdr->AccessMode)).rtrim(' ').getAsInteger(8, Ret))
- llvm_unreachable("Access mode is not an octal number.");
+ sizeof(ArMemHdr->AccessMode)).rtrim(' ').getAsInteger(8, Ret)) {
+ std::string Buf;
+ raw_string_ostream OS(Buf);
+ OS.write_escaped(llvm::StringRef(ArMemHdr->AccessMode,
+ sizeof(ArMemHdr->AccessMode)).rtrim(" "));
+ OS.flush();
+ uint64_t Offset = reinterpret_cast<const char *>(ArMemHdr) -
+ Parent->getData().data();
+ return malformedError("characters in AccessMode field in archive header "
+ "are not all decimal numbers: '" + Buf + "' for the "
+ "archive member header at offset " + Twine(Offset));
+ }
return static_cast<sys::fs::perms>(Ret);
}
-sys::TimeValue ArchiveMemberHeader::getLastModified() const {
+Expected<sys::TimeValue> ArchiveMemberHeader::getLastModified() const {
unsigned Seconds;
if (StringRef(ArMemHdr->LastModified,
sizeof(ArMemHdr->LastModified)).rtrim(' ')
- .getAsInteger(10, Seconds))
- llvm_unreachable("Last modified time not a decimal number.");
+ .getAsInteger(10, Seconds)) {
+ std::string Buf;
+ raw_string_ostream OS(Buf);
+ OS.write_escaped(llvm::StringRef(ArMemHdr->LastModified,
+ sizeof(ArMemHdr->LastModified)).rtrim(" "));
+ OS.flush();
+ uint64_t Offset = reinterpret_cast<const char *>(ArMemHdr) -
+ Parent->getData().data();
+ return malformedError("characters in LastModified field in archive header "
+ "are not all decimal numbers: '" + Buf + "' for the "
+ "archive member header at offset " + Twine(Offset));
+ }
sys::TimeValue Ret;
Ret.fromEpochTime(Seconds);
return Ret;
}
-unsigned ArchiveMemberHeader::getUID() const {
+Expected<unsigned> ArchiveMemberHeader::getUID() const {
unsigned Ret;
StringRef User = StringRef(ArMemHdr->UID, sizeof(ArMemHdr->UID)).rtrim(' ');
if (User.empty())
return 0;
- if (User.getAsInteger(10, Ret))
- llvm_unreachable("UID time not a decimal number.");
+ if (User.getAsInteger(10, Ret)) {
+ std::string Buf;
+ raw_string_ostream OS(Buf);
+ OS.write_escaped(User);
+ OS.flush();
+ uint64_t Offset = reinterpret_cast<const char *>(ArMemHdr) -
+ Parent->getData().data();
+ return malformedError("characters in UID field in archive header "
+ "are not all decimal numbers: '" + Buf + "' for the "
+ "archive member header at offset " + Twine(Offset));
+ }
return Ret;
}
-unsigned ArchiveMemberHeader::getGID() const {
+Expected<unsigned> ArchiveMemberHeader::getGID() const {
unsigned Ret;
StringRef Group = StringRef(ArMemHdr->GID, sizeof(ArMemHdr->GID)).rtrim(' ');
if (Group.empty())
return 0;
- if (Group.getAsInteger(10, Ret))
- llvm_unreachable("GID time not a decimal number.");
+ if (Group.getAsInteger(10, Ret)) {
+ std::string Buf;
+ raw_string_ostream OS(Buf);
+ OS.write_escaped(Group);
+ OS.flush();
+ uint64_t Offset = reinterpret_cast<const char *>(ArMemHdr) -
+ Parent->getData().data();
+ return malformedError("characters in GID field in archive header "
+ "are not all decimal numbers: '" + Buf + "' for the "
+ "archive member header at offset " + Twine(Offset));
+ }
return Ret;
}
Modified: llvm/trunk/lib/Object/ArchiveWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Object/ArchiveWriter.cpp?rev=277540&r1=277539&r2=277540&view=diff
==============================================================================
--- llvm/trunk/lib/Object/ArchiveWriter.cpp (original)
+++ llvm/trunk/lib/Object/ArchiveWriter.cpp Tue Aug 2 17:58:55 2016
@@ -47,10 +47,22 @@ NewArchiveMember::getOldMember(const obj
NewArchiveMember M;
M.Buf = MemoryBuffer::getMemBuffer(*BufOrErr, false);
if (!Deterministic) {
- M.ModTime = OldMember.getLastModified();
- M.UID = OldMember.getUID();
- M.GID = OldMember.getGID();
- M.Perms = OldMember.getAccessMode();
+ Expected<sys::TimeValue> ModTimeOrErr = OldMember.getLastModified();
+ if (!ModTimeOrErr)
+ return ModTimeOrErr.takeError();
+ M.ModTime = ModTimeOrErr.get();
+ Expected<unsigned> UIDOrErr = OldMember.getUID();
+ if (!UIDOrErr)
+ return UIDOrErr.takeError();
+ M.UID = UIDOrErr.get();
+ Expected<unsigned> GIDOrErr = OldMember.getGID();
+ if (!GIDOrErr)
+ return GIDOrErr.takeError();
+ M.GID = GIDOrErr.get();
+ Expected<sys::fs::perms> AccessModeOrErr = OldMember.getAccessMode();
+ if (!AccessModeOrErr)
+ return AccessModeOrErr.takeError();
+ M.Perms = AccessModeOrErr.get();
}
return std::move(M);
}
Added: llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus11.a
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus11.a?rev=277540&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus11.a (added)
+++ llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus11.a Tue Aug 2 17:58:55 2016
@@ -0,0 +1,10 @@
+!<arch>
+hello.c 1444941273 ~97& 0 100644 102 `
+#include <stdio.h>
+#include <stdlib.h>
+int
+main()
+{
+ printf("Hello World\n");
+ return EXIT_SUCCESS;
+}
Added: llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus12.a
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus12.a?rev=277540&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus12.a (added)
+++ llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus12.a Tue Aug 2 17:58:55 2016
@@ -0,0 +1,10 @@
+!<arch>
+hello.c 1444941273 124 #55! 100644 102 `
+#include <stdio.h>
+#include <stdlib.h>
+int
+main()
+{
+ printf("Hello World\n");
+ return EXIT_SUCCESS;
+}
Added: llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus13.a
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus13.a?rev=277540&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus13.a (added)
+++ llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus13.a Tue Aug 2 17:58:55 2016
@@ -0,0 +1,10 @@
+!<arch>
+hello.c 1444941273 124 0 Feed 102 `
+#include <stdio.h>
+#include <stdlib.h>
+int
+main()
+{
+ printf("Hello World\n");
+ return EXIT_SUCCESS;
+}
Added: llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus14.a
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus14.a?rev=277540&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus14.a (added)
+++ llvm/trunk/test/tools/llvm-objdump/Inputs/libbogus14.a Tue Aug 2 17:58:55 2016
@@ -0,0 +1,10 @@
+!<arch>
+hello.c 1foobar273 124 0 100644 102 `
+#include <stdio.h>
+#include <stdlib.h>
+int
+main()
+{
+ printf("Hello World\n");
+ return EXIT_SUCCESS;
+}
Modified: llvm/trunk/test/tools/llvm-objdump/malformed-archives.test
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-objdump/malformed-archives.test?rev=277540&r1=277539&r2=277540&view=diff
==============================================================================
--- llvm/trunk/test/tools/llvm-objdump/malformed-archives.test (original)
+++ llvm/trunk/test/tools/llvm-objdump/malformed-archives.test Tue Aug 2 17:58:55 2016
@@ -58,3 +58,31 @@
# RUN: 2>&1 | FileCheck -check-prefix=bogus10 %s
# bogus10: libbogus10.a(???) truncated or malformed archive (long name offset 507 past the end of the string table for archive member header at offset 94)
+
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN: %p/Inputs/libbogus11.a \
+# RUN: 2>&1 | FileCheck -check-prefix=bogus11 %s
+
+# bogus11: libbogus11.a(hello.c) truncated or malformed archive (characters in UID field in archive header are not all decimal numbers: '~97&' for the archive member header at offset 8)
+
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN: %p/Inputs/libbogus12.a \
+# RUN: 2>&1 | FileCheck -check-prefix=bogus12 %s
+
+# bogus12: libbogus12.a(hello.c) truncated or malformed archive (characters in GID field in archive header are not all decimal numbers: '#55!' for the archive member header at offset 8)
+
+# RUN: not llvm-objdump -macho -archive-headers \
+# RUN: %p/Inputs/libbogus13.a \
+# RUN: 2>&1 | FileCheck -check-prefix=bogus13 %s
+
+# bogus13: libbogus13.a(hello.c) truncated or malformed archive (characters in AccessMode field in archive header are not all decimal numbers: 'Feed' for the archive member header at offset 8)
+
+# RUN: llvm-objdump -macho -archive-headers %p/Inputs/libbogus14.a \
+# RUN: 2>&1 | FileCheck -check-prefix=bogus14 %s
+
+# bogus14: -rw-r--r--124/0 102 (date: "1foobar273" contains non-decimal chars) hello.c
+
+# RUN: not llvm-ar tv %p/Inputs/libbogus14.a \
+# RUN: 2>&1 | FileCheck -check-prefix=bogus14a %s
+
+# bogus14a: truncated or malformed archive (characters in LastModified field in archive header are not all decimal numbers: '1foobar273' for the archive member header at offset 8)
Modified: llvm/trunk/tools/dsymutil/BinaryHolder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/dsymutil/BinaryHolder.cpp?rev=277540&r1=277539&r2=277540&view=diff
==============================================================================
--- llvm/trunk/tools/dsymutil/BinaryHolder.cpp (original)
+++ llvm/trunk/tools/dsymutil/BinaryHolder.cpp Tue Aug 2 17:58:55 2016
@@ -106,8 +106,11 @@ BinaryHolder::GetArchiveMemberBuffers(St
for (auto Child : CurrentArchive->children(Err)) {
if (auto NameOrErr = Child.getName()) {
if (*NameOrErr == Filename) {
+ Expected<sys::TimeValue> ModTimeOrErr = Child.getLastModified();
+ if (!ModTimeOrErr)
+ return errorToErrorCode(ModTimeOrErr.takeError());
if (Timestamp != sys::TimeValue::PosixZeroTime() &&
- Timestamp != Child.getLastModified()) {
+ Timestamp != ModTimeOrErr.get()) {
if (Verbose)
outs() << "\tmember had timestamp mismatch.\n";
continue;
Modified: llvm/trunk/tools/llvm-ar/llvm-ar.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-ar/llvm-ar.cpp?rev=277540&r1=277539&r2=277540&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-ar/llvm-ar.cpp (original)
+++ llvm/trunk/tools/llvm-ar/llvm-ar.cpp Tue Aug 2 17:58:55 2016
@@ -338,16 +338,24 @@ static void printMode(unsigned mode) {
// modification time are also printed.
static void doDisplayTable(StringRef Name, const object::Archive::Child &C) {
if (Verbose) {
- sys::fs::perms Mode = C.getAccessMode();
+ Expected<sys::fs::perms> ModeOrErr = C.getAccessMode();
+ failIfError(ModeOrErr.takeError());
+ sys::fs::perms Mode = ModeOrErr.get();
printMode((Mode >> 6) & 007);
printMode((Mode >> 3) & 007);
printMode(Mode & 007);
- outs() << ' ' << C.getUID();
- outs() << '/' << C.getGID();
+ Expected<unsigned> UIDOrErr = C.getUID();
+ failIfError(UIDOrErr.takeError());
+ outs() << ' ' << UIDOrErr.get();
+ Expected<unsigned> GIDOrErr = C.getGID();
+ failIfError(GIDOrErr.takeError());
+ outs() << '/' << GIDOrErr.get();
Expected<uint64_t> Size = C.getSize();
failIfError(Size.takeError());
outs() << ' ' << format("%6llu", Size.get());
- outs() << ' ' << C.getLastModified().str();
+ Expected<sys::TimeValue> ModTimeOrErr = C.getLastModified();
+ failIfError(ModTimeOrErr.takeError());
+ outs() << ' ' << ModTimeOrErr.get().str();
outs() << ' ';
}
outs() << Name << "\n";
@@ -357,7 +365,9 @@ static void doDisplayTable(StringRef Nam
// system.
static void doExtract(StringRef Name, const object::Archive::Child &C) {
// Retain the original mode.
- sys::fs::perms Mode = C.getAccessMode();
+ Expected<sys::fs::perms> ModeOrErr = C.getAccessMode();
+ failIfError(ModeOrErr.takeError());
+ sys::fs::perms Mode = ModeOrErr.get();
int FD;
failIfError(sys::fs::openFileForWrite(Name, FD, sys::fs::F_None, Mode), Name);
@@ -374,9 +384,12 @@ static void doExtract(StringRef Name, co
// If we're supposed to retain the original modification times, etc. do so
// now.
- if (OriginalDates)
+ if (OriginalDates) {
+ Expected<sys::TimeValue> ModTimeOrErr = C.getLastModified();
+ failIfError(ModTimeOrErr.takeError());
failIfError(
- sys::fs::setLastModificationAndAccessTime(FD, C.getLastModified()));
+ sys::fs::setLastModificationAndAccessTime(FD, ModTimeOrErr.get()));
+ }
if (close(FD))
fail("Could not close the file");
@@ -511,7 +524,9 @@ static InsertAction computeInsertAction(
// operation.
sys::fs::file_status Status;
failIfError(sys::fs::status(*MI, Status), *MI);
- if (Status.getLastModificationTime() < Member.getLastModified()) {
+ Expected<sys::TimeValue> ModTimeOrErr = Member.getLastModified();
+ failIfError(ModTimeOrErr.takeError());
+ if (Status.getLastModificationTime() < ModTimeOrErr.get()) {
if (PosName.empty())
return IA_AddOldMember;
return IA_MoveOldMember;
Modified: llvm/trunk/tools/llvm-objdump/MachODump.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-objdump/MachODump.cpp?rev=277540&r1=277539&r2=277540&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-objdump/MachODump.cpp (original)
+++ llvm/trunk/tools/llvm-objdump/MachODump.cpp Tue Aug 2 17:58:55 2016
@@ -1477,7 +1477,10 @@ static void printArchiveChild(StringRef
StringRef ArchitectureName = StringRef()) {
if (print_offset)
outs() << C.getChildOffset() << "\t";
- sys::fs::perms Mode = C.getAccessMode();
+ Expected<sys::fs::perms> ModeOrErr = C.getAccessMode();
+ if (!ModeOrErr)
+ report_error(Filename, C, ModeOrErr.takeError(), ArchitectureName);
+ sys::fs::perms Mode = ModeOrErr.get();
if (verbose) {
// FIXME: this first dash, "-", is for (Mode & S_IFMT) == S_IFREG.
// But there is nothing in sys::fs::perms for S_IFMT or S_IFREG.
@@ -1495,9 +1498,15 @@ static void printArchiveChild(StringRef
outs() << format("0%o ", Mode);
}
- unsigned UID = C.getUID();
+ Expected<unsigned> UIDOrErr = C.getUID();
+ if (!UIDOrErr)
+ report_error(Filename, C, UIDOrErr.takeError(), ArchitectureName);
+ unsigned UID = UIDOrErr.get();
outs() << format("%3d/", UID);
- unsigned GID = C.getGID();
+ Expected<unsigned> GIDOrErr = C.getGID();
+ if (!GIDOrErr)
+ report_error(Filename, C, GIDOrErr.takeError(), ArchitectureName);
+ unsigned GID = GIDOrErr.get();
outs() << format("%-3d ", GID);
Expected<uint64_t> Size = C.getRawSize();
if (!Size)
@@ -1508,7 +1517,8 @@ static void printArchiveChild(StringRef
if (verbose) {
unsigned Seconds;
if (RawLastModified.getAsInteger(10, Seconds))
- outs() << "(date: \"%s\" contains non-decimal chars) " << RawLastModified;
+ outs() << "(date: \"" << RawLastModified
+ << "\" contains non-decimal chars) ";
else {
// Since cime(3) returns a 26 character string of the form:
// "Sun Sep 16 01:03:52 1973\n\0"
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