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//===-- FileSystem.cpp ------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/FileSystem.h"
// C includes
#include <dirent.h>
#include <sys/mount.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/types.h>
#ifdef __linux__
#include <linux/magic.h>
#include <sys/mount.h>
#include <sys/statfs.h>
#endif
#if defined(__NetBSD__)
#include <sys/statvfs.h>
#endif
// lldb Includes
#include "lldb/Host/Host.h"
#include "lldb/Utility/Error.h"
#include "lldb/Utility/StreamString.h"
#include "llvm/Support/FileSystem.h"
using namespace lldb;
using namespace lldb_private;
const char *FileSystem::DEV_NULL = "/dev/null";
FileSpec::PathSyntax FileSystem::GetNativePathSyntax() {
return FileSpec::ePathSyntaxPosix;
}
lldb::user_id_t FileSystem::GetFileSize(const FileSpec &file_spec) {
return file_spec.GetByteSize();
}
bool FileSystem::GetFileExists(const FileSpec &file_spec) {
return file_spec.Exists();
}
Error FileSystem::Hardlink(const FileSpec &src, const FileSpec &dst) {
Error error;
if (::link(dst.GetCString(), src.GetCString()) == -1)
error.SetErrorToErrno();
return error;
}
int FileSystem::GetHardlinkCount(const FileSpec &file_spec) {
struct stat file_stat;
if (::stat(file_spec.GetCString(), &file_stat) == 0)
return file_stat.st_nlink;
return -1;
}
Error FileSystem::Symlink(const FileSpec &src, const FileSpec &dst) {
Error error;
if (::symlink(dst.GetCString(), src.GetCString()) == -1)
error.SetErrorToErrno();
return error;
}
Error FileSystem::Unlink(const FileSpec &file_spec) {
Error error;
if (::unlink(file_spec.GetCString()) == -1)
error.SetErrorToErrno();
return error;
}
Error FileSystem::Readlink(const FileSpec &src, FileSpec &dst) {
Error error;
char buf[PATH_MAX];
ssize_t count = ::readlink(src.GetCString(), buf, sizeof(buf) - 1);
if (count < 0)
error.SetErrorToErrno();
else {
buf[count] = '\0'; // Success
dst.SetFile(buf, false);
}
return error;
}
Error FileSystem::ResolveSymbolicLink(const FileSpec &src, FileSpec &dst) {
char resolved_path[PATH_MAX];
if (!src.GetPath(resolved_path, sizeof(resolved_path))) {
return Error("Couldn't get the canonical path for %s", src.GetCString());
}
char real_path[PATH_MAX + 1];
if (realpath(resolved_path, real_path) == nullptr) {
Error err;
err.SetErrorToErrno();
return err;
}
dst = FileSpec(real_path, false);
return Error();
}
#if defined(__NetBSD__)
static bool IsLocal(const struct statvfs &info) {
return (info.f_flag & MNT_LOCAL) != 0;
}
#else
static bool IsLocal(const struct statfs &info) {
#ifdef __linux__
#define CIFS_MAGIC_NUMBER 0xFF534D42
switch ((uint32_t)info.f_type) {
case NFS_SUPER_MAGIC:
case SMB_SUPER_MAGIC:
case CIFS_MAGIC_NUMBER:
return false;
default:
return true;
}
#else
return (info.f_flags & MNT_LOCAL) != 0;
#endif
}
#endif
#if defined(__NetBSD__)
bool FileSystem::IsLocal(const FileSpec &spec) {
struct statvfs statfs_info;
std::string path(spec.GetPath());
if (statvfs(path.c_str(), &statfs_info) == 0)
return ::IsLocal(statfs_info);
return false;
}
#else
bool FileSystem::IsLocal(const FileSpec &spec) {
struct statfs statfs_info;
std::string path(spec.GetPath());
if (statfs(path.c_str(), &statfs_info) == 0)
return ::IsLocal(statfs_info);
return false;
}
#endif
FILE *FileSystem::Fopen(const char *path, const char *mode) {
return ::fopen(path, mode);
}
int FileSystem::Stat(const char *path, struct stat *stats) {
return ::stat(path, stats);
}
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