-#ifdef WIN32
-#include <windows.h>
-#include <aclapi.h>
-#else
-#define _FILE_OFFSET_BITS 64
-#include <sys/stat.h>
-#include <grp.h>
-#include <pwd.h>
-#endif
-#include <msp/core/systemerror.h>
-#include <msp/strings/format.h>
-#include <msp/time/rawtime_private.h>
#include "path.h"
#include "stat.h"
+#include "stat_private.h"
using namespace std;
-namespace {
-
-#ifdef WIN32
-string get_account_name(PSID sid)
-{
- char name[1024];
- DWORD nlen = sizeof(name);
- char domain[1024];
- DWORD dlen = sizeof(domain);
- SID_NAME_USE use;
- if(!LookupAccountSid(0, sid, name, &nlen, domain, &dlen, &use))
- throw Msp::system_error("LookupAccountSid");
- return Msp::format("%s/%s", name, domain);
-}
-#endif
-
-}
-
-
namespace Msp {
namespace FS {
-#ifndef WIN32
-struct Stat::Private
-{
- static Stat from_struct_stat(const struct stat &);
-};
-
-Stat Stat::Private::from_struct_stat(const struct stat &st)
-{
- Stat result;
- if(S_ISREG(st.st_mode))
- result.type = REGULAR;
- else if(S_ISDIR(st.st_mode))
- result.type = DIRECTORY;
- else if(S_ISLNK(st.st_mode))
- result.type = SYMLINK;
- else
- result.type = UNKNOWN;
- result.size = st.st_size;
- result.alloc_size = st.st_blocks*512;
- result.mtime = Time::TimeStamp::from_unixtime(st.st_mtime);
-
- char buf[1024];
-
- struct passwd pw;
- struct passwd *owner;
- if(!getpwuid_r(st.st_uid, &pw, buf, sizeof(buf), &owner) && owner)
- result.owner = owner->pw_name;
- else
- result.owner = format("%d", st.st_uid);
-
- struct group gr;
- struct group *group;
- if(!getgrgid_r(st.st_gid, &gr, buf, sizeof(buf), &group) && group)
- result.group = group->gr_name;
- else
- result.group = format("%d", st.st_gid);
+Stat::Private::Private():
+ owner_id(0),
+ group_id(0)
+{ }
- return result;
-}
-#endif
Stat::Stat():
+ exists(false),
type(UNKNOWN),
size(0),
- alloc_size(0)
+ alloc_size(0),
+ priv(0)
{ }
-Stat Stat::stat(const Path &path)
-{
-#ifdef WIN32
- HANDLE handle;
- handle = CreateFile(path.str().c_str(), 0, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
- if(handle==INVALID_HANDLE_VALUE)
- throw system_error("CreateFile");
-
- BY_HANDLE_FILE_INFORMATION info;
- if(!GetFileInformationByHandle(handle, &info))
- {
- CloseHandle(handle);
- throw system_error("GetFileInformationByHandle");
- }
-
- Stat result;
- if(info.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY)
- result.type = DIRECTORY;
- else
- result.type = REGULAR;
-
- result.size = FileSize(info.nFileSizeHigh)<<32 | info.nFileSizeLow;
- result.alloc_size = (result.size+511)&~511;
- result.mtime = Time::TimeStamp(Time::filetime_to_rawtime(info.ftLastWriteTime));
-
- PSECURITY_DESCRIPTOR sec_desc;
- PSID owner;
- PSID group;
- if(!GetSecurityInfo(handle, SE_FILE_OBJECT, OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION, &owner, &group, 0, 0, &sec_desc))
- {
- CloseHandle(handle);
- throw system_error("GetSecurityInfo");
- }
-
- result.owner = get_account_name(owner);
- result.group = get_account_name(group);
-
- LocalFree(sec_desc);
-
- CloseHandle(handle);
-
- return result;
-#else
- struct stat st;
- int ret = ::stat(path.str().c_str(), &st);
- if(ret==-1)
- throw system_error("stat");
+Stat::Stat(const Stat &other):
+ exists(other.exists),
+ type(other.type),
+ size(other.type),
+ alloc_size(other.alloc_size),
+ mtime(other.mtime),
+ owner_info(other.owner_info),
+ priv(other.priv ? new Private(*other.priv) : 0)
+{ }
- return Private::from_struct_stat(st);
-#endif
+Stat &Stat::operator=(const Stat &other)
+{
+ exists = other.exists;
+ type = other.type;
+ size = other.size;
+ alloc_size = other.alloc_size;
+ mtime = other.mtime;
+ owner_info = other.owner_info;
+ delete priv;
+ priv = (other.priv ? new Private(*other.priv) : 0);
+
+ return *this;
}
-Stat Stat::lstat(const Path &path)
+Stat::~Stat()
{
-#ifdef WIN32
- return stat(path);
-#else
- struct stat st;
- int ret = ::lstat(path.str().c_str(), &st);
- if(ret==-1)
- throw system_error("lstat");
+ delete priv;
+}
- return Private::from_struct_stat(st);
-#endif
+const std::string &Stat::get_owner() const
+{
+ if(priv && owner_info.owner.empty())
+ priv->fill_owner_info(owner_info);
+ return owner_info.owner;
}
-bool exists(const Path &path)
+const std::string &Stat::get_group() const
{
-#ifdef WIN32
- return GetFileAttributes(path.str().c_str())!=INVALID_FILE_ATTRIBUTES;
-#else
- return access(path.str().c_str(), F_OK)==0;
-#endif
+ if(priv && owner_info.group.empty())
+ priv->fill_owner_info(owner_info);
+ return owner_info.group;
}
} // namespace FS