34f7289475
(pwdgrp_read::~pwdgrp_read): Ditto. (pwdgrp_read::open): Reset fh to NULL instead of INVALID_HANDLE_VALUE. (pwdgrp_read::close): Ditto.
116 lines
2.3 KiB
C++
116 lines
2.3 KiB
C++
/* pwdgrp.h
|
|
|
|
Copyright 2001 Red Hat inc.
|
|
|
|
Stuff common to pwd and grp handling.
|
|
|
|
This file is part of Cygwin.
|
|
|
|
This software is a copyrighted work licensed under the terms of the
|
|
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
|
|
details. */
|
|
|
|
enum pwdgrp_state {
|
|
uninitialized = 0,
|
|
initializing,
|
|
emulated,
|
|
loaded
|
|
};
|
|
|
|
class pwdgrp_check {
|
|
pwdgrp_state state;
|
|
FILETIME last_modified;
|
|
char file_w32[MAX_PATH];
|
|
|
|
public:
|
|
pwdgrp_check () : state (uninitialized) {}
|
|
operator pwdgrp_state ()
|
|
{
|
|
if (state != uninitialized && file_w32[0] && cygheap->etc_changed ())
|
|
{
|
|
HANDLE h;
|
|
WIN32_FIND_DATA data;
|
|
|
|
if ((h = FindFirstFile (file_w32, &data)) != INVALID_HANDLE_VALUE)
|
|
{
|
|
if (CompareFileTime (&data.ftLastWriteTime, &last_modified) > 0)
|
|
state = uninitialized;
|
|
FindClose (h);
|
|
}
|
|
}
|
|
return state;
|
|
}
|
|
void operator = (pwdgrp_state nstate)
|
|
{
|
|
state = nstate;
|
|
}
|
|
void set_last_modified (HANDLE fh, const char *name)
|
|
{
|
|
if (!file_w32[0])
|
|
strcpy (file_w32, name);
|
|
GetFileTime (fh, NULL, NULL, &last_modified);
|
|
}
|
|
};
|
|
|
|
class pwdgrp_read {
|
|
path_conv pc;
|
|
HANDLE fh;
|
|
char *buf;
|
|
char *lptr, *eptr;
|
|
|
|
public:
|
|
bool open (const char *posix_fname)
|
|
{
|
|
if (buf)
|
|
free (buf);
|
|
buf = lptr = eptr = NULL;
|
|
|
|
pc.check (posix_fname);
|
|
if (pc.error || !pc.exists () || !pc.isdisk () || pc.isdir ())
|
|
return false;
|
|
|
|
fh = CreateFile (pc, GENERIC_READ, wincap.shared (), NULL, OPEN_EXISTING,
|
|
FILE_ATTRIBUTE_NORMAL, 0);
|
|
if (fh)
|
|
{
|
|
DWORD size = GetFileSize (fh, NULL), read_bytes;
|
|
buf = (char *) malloc (size + 1);
|
|
if (!ReadFile (fh, buf, size, &read_bytes, NULL))
|
|
{
|
|
if (buf)
|
|
free (buf);
|
|
buf = NULL;
|
|
CloseHandle (fh);
|
|
fh = NULL;
|
|
return false;
|
|
}
|
|
buf[read_bytes] = '\0';
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
char *gets ()
|
|
{
|
|
if (!buf)
|
|
return NULL;
|
|
if (!lptr)
|
|
lptr = buf;
|
|
else if (!eptr)
|
|
return lptr = NULL;
|
|
else
|
|
lptr = eptr;
|
|
eptr = strchr (lptr, '\n');
|
|
if (eptr)
|
|
*eptr++ = '\0';
|
|
return lptr;
|
|
}
|
|
inline HANDLE get_fhandle () { return fh; }
|
|
inline const char *get_fname () { return pc; }
|
|
void close ()
|
|
{
|
|
if (fh)
|
|
CloseHandle (fh);
|
|
fh = NULL;
|
|
}
|
|
};
|