#ifdef WIN32
-#include <io.h>
+#include <windows.h>
+#include <aclapi.h>
+#else
+#define _FILE_OFFSET_BITS 64
+#include <cerrno>
+#include <unistd.h>
+#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"
+using namespace std;
+
+namespace {
+
+#ifdef WIN32
+PSID copy_sid(PSID sid)
+{
+ if(!sid || !IsValidSid(sid))
+ return 0;
+ DWORD len = GetLengthSid(sid);
+ PSID copy = reinterpret_cast<PSID>(HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len));
+ if(!CopySid(len, copy, sid))
+ {
+ DWORD err = GetLastError();
+ HeapFree(GetProcessHeap(), 0, copy);
+ throw Msp::system_error("CopySid", err);
+ }
+ return copy;
+}
+
+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 {
-int stat(const Path &fn, struct stat &st)
+struct Stat::Private
{
- return ::stat(fn.str().c_str(), &st);
+#ifdef WIN32
+ PSID owner_id;
+ PSID group_id;
+#else
+ uid_t owner_id;
+ gid_t group_id;
+#endif
+
+ Private();
+ Private(const Private &);
+ ~Private();
+
+#ifndef WIN32
+ /* This is here because it needs access to private members of Stat, but we
+ can't expose the system stat struct in the public header */
+ static Stat from_struct_stat(const struct stat &);
+#endif
+
+ void fill_owner_info(Stat::OwnerInfo &);
+};
+
+Stat::Private::Private():
+ owner_id(0),
+ group_id(0)
+{ }
+
+Stat::Private::Private(const Private &other):
+#ifdef WIN32
+ owner_id(copy_sid(other.owner_id)),
+ group_id(copy_sid(other.group_id))
+#else
+ owner_id(other.owner_id),
+ group_id(other.group_id)
+#endif
+{ }
+
+Stat::Private::~Private()
+{
+#ifdef WIN32
+ if(owner_id)
+ HeapFree(GetProcessHeap(), 0, owner_id);
+ if(group_id)
+ HeapFree(GetProcessHeap(), 0, group_id);
+#endif
}
-struct stat stat(const Path &fn)
+#ifndef WIN32
+Stat Stat::Private::from_struct_stat(const struct stat &st)
{
- struct stat st;
- if(stat(fn, st)==-1)
- throw system_error("stat");
- return st;
+ Stat result;
+ result.exists = true;
+ 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);
+
+ result.priv = new Private;
+ result.priv->owner_id = st.st_uid;
+ result.priv->group_id = st.st_gid;
+
+ return result;
}
+#endif
-int lstat(const Path &fn, struct stat &st)
+void Stat::Private::fill_owner_info(Stat::OwnerInfo &result)
{
#ifdef WIN32
- return stat(fn, st);
+ if(owner_id)
+ result.owner = get_account_name(owner_id);
+ else
+ result.owner = "None";
+
+ if(group_id)
+ result.group = get_account_name(group_id);
+ else
+ result.group = "None";
#else
- return ::lstat(fn.str().c_str(), &st);
+ char buf[1024];
+
+ struct passwd pw;
+ struct passwd *owner;
+ if(!getpwuid_r(owner_id, &pw, buf, sizeof(buf), &owner) && owner)
+ result.owner = owner->pw_name;
+ else
+ result.owner = format("%d", owner_id);
+
+ struct group gr;
+ struct group *group;
+ if(!getgrgid_r(group_id, &gr, buf, sizeof(buf), &group) && group)
+ result.group = group->gr_name;
+ else
+ result.group = format("%d", group_id);
#endif
}
-struct stat lstat(const Path &fn)
+
+Stat::Stat():
+ exists(false),
+ type(UNKNOWN),
+ size(0),
+ alloc_size(0),
+ priv(0)
+{ }
+
+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)
+{ }
+
+Stat &Stat::operator=(const Stat &other)
{
- struct stat st;
- if(lstat(fn, st)==-1)
- throw system_error("lstat");
- return st;
+ 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;
}
-bool exists(const Path &path)
+Stat::~Stat()
{
- return access(path.str().c_str(), F_OK)==0;
+ delete priv;
}
-bool is_reg(const Path &path)
+Stat Stat::stat(const Path &path)
{
+#ifdef WIN32
+ HANDLE handle;
+ handle = CreateFile(path.str().c_str(), READ_CONTROL, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL|FILE_FLAG_BACKUP_SEMANTICS, 0);
+ if(handle==INVALID_HANDLE_VALUE)
+ {
+ DWORD err = GetLastError();
+ if(err==ERROR_FILE_NOT_FOUND)
+ return Stat();
+ else
+ throw system_error("CreateFile", err);
+ }
+
+ 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 = 0;
+ PSID group = 0;
+ const SECURITY_INFORMATION sec_info = OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION;
+ DWORD err = GetSecurityInfo(handle, SE_FILE_OBJECT, sec_info, &owner, &group, 0, 0, &sec_desc);
+ if(err)
+ {
+ CloseHandle(handle);
+ throw system_error("GetSecurityInfo", err);
+ }
+
+ result.priv = new Private;
+ result.priv->owner_id = copy_sid(owner);
+ result.priv->group_id = copy_sid(group);
+
+ LocalFree(sec_desc);
+
+ CloseHandle(handle);
+
+ return result;
+#else
struct stat st;
- if(stat(path, st)==0)
- return S_ISREG(st.st_mode);
- return false;
+ int ret = ::stat(path.str().c_str(), &st);
+ if(ret==-1)
+ {
+ if(errno==ENOENT)
+ return Stat();
+ else
+ throw system_error("stat");
+ }
+
+ return Private::from_struct_stat(st);
+#endif
}
-bool is_dir(const Path &path)
+const std::string &Stat::get_owner() const
{
- struct stat st;
- if(stat(path, st)==0)
- return S_ISDIR(st.st_mode);
- return false;
+ if(priv && owner_info.owner.empty())
+ priv->fill_owner_info(owner_info);
+ return owner_info.owner;
}
-bool is_link(const Path &path)
+const std::string &Stat::get_group() const
+{
+ if(priv && owner_info.group.empty())
+ priv->fill_owner_info(owner_info);
+ return owner_info.group;
+}
+
+Stat Stat::lstat(const Path &path)
{
#ifdef WIN32
- (void)path;
+ return stat(path);
#else
struct stat st;
- if(lstat(path, st)==0)
- return S_ISLNK(st.st_mode);
+ int ret = ::lstat(path.str().c_str(), &st);
+ if(ret==-1)
+ {
+ if(errno==ENOENT)
+ return Stat();
+ else
+ throw system_error("lstat");
+ }
+
+ return Private::from_struct_stat(st);
+#endif
+}
+
+bool exists(const Path &path)
+{
+#ifdef WIN32
+ return GetFileAttributes(path.str().c_str())!=INVALID_FILE_ATTRIBUTES;
+#else
+ return access(path.str().c_str(), F_OK)==0;
#endif
- return false;
}
} // namespace FS
projects / libs / core.git / blobdiff