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Diffstat (limited to 'pkg/sentry/loader/elf.go')
-rw-r--r--pkg/sentry/loader/elf.go57
1 files changed, 28 insertions, 29 deletions
diff --git a/pkg/sentry/loader/elf.go b/pkg/sentry/loader/elf.go
index 577374fa4..fb213d109 100644
--- a/pkg/sentry/loader/elf.go
+++ b/pkg/sentry/loader/elf.go
@@ -32,7 +32,6 @@ import (
"gvisor.dev/gvisor/pkg/sentry/limits"
"gvisor.dev/gvisor/pkg/sentry/memmap"
"gvisor.dev/gvisor/pkg/sentry/mm"
- "gvisor.dev/gvisor/pkg/syserror"
"gvisor.dev/gvisor/pkg/usermem"
)
@@ -116,7 +115,7 @@ func parseHeader(ctx context.Context, f fullReader) (elfInfo, error) {
log.Infof("Error reading ELF ident: %v", err)
// The entire ident array always exists.
if err == io.EOF || err == io.ErrUnexpectedEOF {
- err = syserror.ENOEXEC
+ err = linuxerr.ENOEXEC
}
return elfInfo{}, err
}
@@ -124,22 +123,22 @@ func parseHeader(ctx context.Context, f fullReader) (elfInfo, error) {
// Only some callers pre-check the ELF magic.
if !bytes.Equal(ident[:len(elfMagic)], []byte(elfMagic)) {
log.Infof("File is not an ELF")
- return elfInfo{}, syserror.ENOEXEC
+ return elfInfo{}, linuxerr.ENOEXEC
}
// We only support 64-bit, little endian binaries
if class := elf.Class(ident[elf.EI_CLASS]); class != elf.ELFCLASS64 {
log.Infof("Unsupported ELF class: %v", class)
- return elfInfo{}, syserror.ENOEXEC
+ return elfInfo{}, linuxerr.ENOEXEC
}
if endian := elf.Data(ident[elf.EI_DATA]); endian != elf.ELFDATA2LSB {
log.Infof("Unsupported ELF endianness: %v", endian)
- return elfInfo{}, syserror.ENOEXEC
+ return elfInfo{}, linuxerr.ENOEXEC
}
if version := elf.Version(ident[elf.EI_VERSION]); version != elf.EV_CURRENT {
log.Infof("Unsupported ELF version: %v", version)
- return elfInfo{}, syserror.ENOEXEC
+ return elfInfo{}, linuxerr.ENOEXEC
}
// EI_OSABI is ignored by Linux, which is the only OS supported.
os := abi.Linux
@@ -151,7 +150,7 @@ func parseHeader(ctx context.Context, f fullReader) (elfInfo, error) {
log.Infof("Error reading ELF header: %v", err)
// The entire header always exists.
if err == io.EOF || err == io.ErrUnexpectedEOF {
- err = syserror.ENOEXEC
+ err = linuxerr.ENOEXEC
}
return elfInfo{}, err
}
@@ -166,7 +165,7 @@ func parseHeader(ctx context.Context, f fullReader) (elfInfo, error) {
a = arch.ARM64
default:
log.Infof("Unsupported ELF machine %d", machine)
- return elfInfo{}, syserror.ENOEXEC
+ return elfInfo{}, linuxerr.ENOEXEC
}
var sharedObject bool
@@ -178,25 +177,25 @@ func parseHeader(ctx context.Context, f fullReader) (elfInfo, error) {
sharedObject = true
default:
log.Infof("Unsupported ELF type %v", elfType)
- return elfInfo{}, syserror.ENOEXEC
+ return elfInfo{}, linuxerr.ENOEXEC
}
if int(hdr.Phentsize) != prog64Size {
log.Infof("Unsupported phdr size %d", hdr.Phentsize)
- return elfInfo{}, syserror.ENOEXEC
+ return elfInfo{}, linuxerr.ENOEXEC
}
totalPhdrSize := prog64Size * int(hdr.Phnum)
if totalPhdrSize < prog64Size {
log.Warningf("No phdrs or total phdr size overflows: prog64Size: %d phnum: %d", prog64Size, int(hdr.Phnum))
- return elfInfo{}, syserror.ENOEXEC
+ return elfInfo{}, linuxerr.ENOEXEC
}
if totalPhdrSize > maxTotalPhdrSize {
log.Infof("Too many phdrs (%d): total size %d > %d", hdr.Phnum, totalPhdrSize, maxTotalPhdrSize)
- return elfInfo{}, syserror.ENOEXEC
+ return elfInfo{}, linuxerr.ENOEXEC
}
if int64(hdr.Phoff) < 0 || int64(hdr.Phoff+uint64(totalPhdrSize)) < 0 {
ctx.Infof("Unsupported phdr offset %d", hdr.Phoff)
- return elfInfo{}, syserror.ENOEXEC
+ return elfInfo{}, linuxerr.ENOEXEC
}
phdrBuf := make([]byte, totalPhdrSize)
@@ -205,7 +204,7 @@ func parseHeader(ctx context.Context, f fullReader) (elfInfo, error) {
log.Infof("Error reading ELF phdrs: %v", err)
// If phdrs were specified, they should all exist.
if err == io.EOF || err == io.ErrUnexpectedEOF {
- err = syserror.ENOEXEC
+ err = linuxerr.ENOEXEC
}
return elfInfo{}, err
}
@@ -248,19 +247,19 @@ func mapSegment(ctx context.Context, m *mm.MemoryManager, f fsbridge.File, phdr
if !ok {
// If offset != 0 we should have ensured this would fit.
ctx.Warningf("Computed segment load address overflows: %#x + %#x", phdr.Vaddr, offset)
- return syserror.ENOEXEC
+ return linuxerr.ENOEXEC
}
addr -= hostarch.Addr(adjust)
fileSize := phdr.Filesz + adjust
if fileSize < phdr.Filesz {
ctx.Infof("Computed segment file size overflows: %#x + %#x", phdr.Filesz, adjust)
- return syserror.ENOEXEC
+ return linuxerr.ENOEXEC
}
ms, ok := hostarch.Addr(fileSize).RoundUp()
if !ok {
ctx.Infof("fileSize %#x too large", fileSize)
- return syserror.ENOEXEC
+ return linuxerr.ENOEXEC
}
mapSize := uint64(ms)
@@ -321,7 +320,7 @@ func mapSegment(ctx context.Context, m *mm.MemoryManager, f fsbridge.File, phdr
memSize := phdr.Memsz + adjust
if memSize < phdr.Memsz {
ctx.Infof("Computed segment mem size overflows: %#x + %#x", phdr.Memsz, adjust)
- return syserror.ENOEXEC
+ return linuxerr.ENOEXEC
}
// Allocate more anonymous pages if necessary.
@@ -333,7 +332,7 @@ func mapSegment(ctx context.Context, m *mm.MemoryManager, f fsbridge.File, phdr
anonSize, ok := hostarch.Addr(memSize - mapSize).RoundUp()
if !ok {
ctx.Infof("extra anon pages too large: %#x", memSize-mapSize)
- return syserror.ENOEXEC
+ return linuxerr.ENOEXEC
}
// N.B. Linux uses vm_brk_flags to map these pages, which only
@@ -423,27 +422,27 @@ func loadParsedELF(ctx context.Context, m *mm.MemoryManager, f fsbridge.File, in
// NOTE(b/37474556): Linux allows out-of-order
// segments, in violation of the spec.
ctx.Infof("PT_LOAD headers out-of-order. %#x < %#x", vaddr, end)
- return loadedELF{}, syserror.ENOEXEC
+ return loadedELF{}, linuxerr.ENOEXEC
}
var ok bool
end, ok = vaddr.AddLength(phdr.Memsz)
if !ok {
ctx.Infof("PT_LOAD header size overflows. %#x + %#x", vaddr, phdr.Memsz)
- return loadedELF{}, syserror.ENOEXEC
+ return loadedELF{}, linuxerr.ENOEXEC
}
case elf.PT_INTERP:
if phdr.Filesz < 2 {
ctx.Infof("PT_INTERP path too small: %v", phdr.Filesz)
- return loadedELF{}, syserror.ENOEXEC
+ return loadedELF{}, linuxerr.ENOEXEC
}
if phdr.Filesz > linux.PATH_MAX {
ctx.Infof("PT_INTERP path too big: %v", phdr.Filesz)
- return loadedELF{}, syserror.ENOEXEC
+ return loadedELF{}, linuxerr.ENOEXEC
}
if int64(phdr.Off) < 0 || int64(phdr.Off+phdr.Filesz) < 0 {
ctx.Infof("Unsupported PT_INTERP offset %d", phdr.Off)
- return loadedELF{}, syserror.ENOEXEC
+ return loadedELF{}, linuxerr.ENOEXEC
}
path := make([]byte, phdr.Filesz)
@@ -451,12 +450,12 @@ func loadParsedELF(ctx context.Context, m *mm.MemoryManager, f fsbridge.File, in
if err != nil {
// If an interpreter was specified, it should exist.
ctx.Infof("Error reading PT_INTERP path: %v", err)
- return loadedELF{}, syserror.ENOEXEC
+ return loadedELF{}, linuxerr.ENOEXEC
}
if path[len(path)-1] != 0 {
ctx.Infof("PT_INTERP path not NUL-terminated: %v", path)
- return loadedELF{}, syserror.ENOEXEC
+ return loadedELF{}, linuxerr.ENOEXEC
}
// Strip NUL-terminator and everything beyond from
@@ -498,7 +497,7 @@ func loadParsedELF(ctx context.Context, m *mm.MemoryManager, f fsbridge.File, in
totalSize, ok := totalSize.RoundUp()
if !ok {
ctx.Infof("ELF PT_LOAD segments too big")
- return loadedELF{}, syserror.ENOEXEC
+ return loadedELF{}, linuxerr.ENOEXEC
}
var err error
@@ -592,7 +591,7 @@ func loadInitialELF(ctx context.Context, m *mm.MemoryManager, fs *cpuid.FeatureS
// Check Image Compatibility.
if arch.Host != info.arch {
ctx.Warningf("Found mismatch for platform %s with ELF type %s", arch.Host.String(), info.arch.String())
- return loadedELF{}, nil, syserror.ENOEXEC
+ return loadedELF{}, nil, linuxerr.ENOEXEC
}
// Create the arch.Context now so we can prepare the mmap layout before
@@ -681,7 +680,7 @@ func loadELF(ctx context.Context, args LoadArgs) (loadedELF, arch.Context, error
if interp.interpreter != "" {
// No recursive interpreters!
ctx.Infof("Interpreter requires an interpreter")
- return loadedELF{}, nil, syserror.ENOEXEC
+ return loadedELF{}, nil, linuxerr.ENOEXEC
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 18:58:15 +0000