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* include/cygwin/version.h: Bump API minor number to 151. 

* dir.cc (__opendir_with_d_ino): New function.
(opendir): Set flag if we should be calculating inodes.
(readdir_worker): Calculate d_ino by calling stat if the user has asked for it.
(seekdir64): Maintain all persistent flag settings.
* fhandler.h (dirent_states): Add dirent_set_d_ino.
* fhandler_disk_file.cc (fhandler_disk_file::opendir): Reflect changes to
dirent structure.
* fhandler_virtual.cc (fhandler_virtual::opendir): Ditto.
* include/sys/dirent.h (struct dirent): Coalesce two similar structures.
Remove all threads of the apparently highly confusing references to inodes.
Add support for calculating a real inode if __USE_EXPENSIVE_CYGWIN_D_INO is
defined.
This commit is contained in:
Christopher Faylor 2006-01-21 02:24:17 +00:00
parent 54abc854d0
commit 868fb2ff69
8 changed files with 77 additions and 76 deletions
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17
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,20 @@
2006-01-20 Christopher Faylor <cgf@timesys.com>
* include/cygwin/version.h: Bump API minor number to 151.
* dir.cc (__opendir_with_d_ino): New function.
(opendir): Set flag if we should be calculating inodes.
(readdir_worker): Calculate d_ino by calling stat if the user has asked
for it.
(seekdir64): Maintain all persistent flag settings.
* fhandler.h (dirent_states): Add dirent_set_d_ino.
* fhandler_disk_file.cc (fhandler_disk_file::opendir): Reflect changes
to dirent structure.
* fhandler_virtual.cc (fhandler_virtual::opendir): Ditto.
* include/sys/dirent.h (struct dirent): Coalesce two similar
structures. Remove all threads of the apparently highly confusing
references to inodes. Add support for calculating a real inode if
__USE_EXPENSIVE_CYGWIN_D_INO is defined.
2006-01-20 Christopher Faylor <cgf@timesys.com>
* include/sys/dirent.h: Add comments for people who are REALLY confused

2
winsup/cygwin/cygwin.din
View File

@ -993,7 +993,7 @@ open SIGFE
_open = open SIGFE
_open64
opendir SIGFE
_opendir = opendir SIGFE
__opendir_with_d_ino SIGFE
openlog SIGFE
_openlog = openlog SIGFE
openpty SIGFE

85
winsup/cygwin/dir.cc
View File

@ -39,7 +39,16 @@ dirfd (DIR *dir)
syscall_printf ("-1 = dirfd (%p)", dir);
return -1;
}
return dir->__d_dirent->d_fd;
return dir->__d_fd;
}
extern "C" DIR *
__opendir_with_d_ino (const char *name)
{
DIR *res = opendir (name);
if (res)
res->__flags |= dirent_set_d_ino;
return res;
}
/* opendir: POSIX 5.1.2.1 */
@ -61,7 +70,7 @@ opendir (const char *name)
}
if (res)
/* nothing */;
res->__flags |= CYGWIN_VERSION_CHECK_FOR_NEEDS_D_INO ? dirent_set_d_ino : 0;
else if (fh)
delete fh;
return res;
@ -100,58 +109,36 @@ readdir_worker (DIR *dir, dirent *de)
}
}
if (res)
/* error return */;
else if (!CYGWIN_VERSION_CHECK_FOR_NEEDS_D_INO)
{
de->__invalid_d_ino = (ino_t) -1;
de->__invalid_ino32 = (uint32_t) -1;
if (de->d_name[0] == '.')
{
if (de->d_name[1] == '\0')
dir->__flags |= dirent_saw_dot;
else if (de->d_name[1] == '.' && de->d_name[2] == '\0')
dir->__flags |= dirent_saw_dot_dot;
}
}
else
if (!res)
{
/* Compute d_ino by combining filename hash with the directory hash
(which was stored in dir->__d_dirhash when opendir was called). */
if (de->d_name[0] == '.')
{
if (de->d_name[1] == '\0')
{
de->__invalid_d_ino = dir->__d_dirhash;
dir->__flags |= dirent_saw_dot;
}
else if (de->d_name[1] != '.' || de->d_name[2] != '\0')
goto hashit;
else
{
dir->__flags |= dirent_saw_dot_dot;
char *p, up[strlen (dir->__d_dirname) + 1];
strcpy (up, dir->__d_dirname);
if (!(p = strrchr (up, '\\')))
goto hashit;
*p = '\0';
if (!(p = strrchr (up, '\\')))
de->__invalid_d_ino = hash_path_name (0, ".");
else
{
*p = '\0';
de->__invalid_d_ino = hash_path_name (0, up);
}
}
}
if (de->d_name[0] != '.')
/* relax */;
else if (de->d_name[1] == '\0')
dir->__flags |= dirent_saw_dot;
else if (de->d_name[1] == '.' && de->d_name[2] == '\0')
dir->__flags |= dirent_saw_dot_dot;
if (!(dir->__flags & dirent_set_d_ino))
de->__dirent_internal = 0;
else
{
hashit:
__ino64_t dino = hash_path_name (dir->__d_dirhash, "\\");
de->__invalid_d_ino = hash_path_name (dino, de->d_name);
size_t len = strlen (dir->__d_dirname) + strlen (de->d_name);
char *path = (char *) alloca (len);
char *p = strchr (strcpy (path, dir->__d_dirname), '\0');
strcpy (p - 1, de->d_name);
struct __stat64 st;
if (lstat64 (path, &st) == 0)
de->__dirent_internal = st.st_ino;
else
{
de->__dirent_internal = hash_path_name (0, dir->__d_dirname);
de->__dirent_internal = hash_path_name (de->__dirent_internal, de->d_name);
}
}
de->__invalid_ino32 = de->__invalid_d_ino; // for legacy applications
de->__dirent_internal1 = de->__dirent_internal;
}
return res;
}
@ -210,7 +197,7 @@ seekdir64 (DIR *dir, _off64_t loc)
if (dir->__d_cookie != __DIRENT_COOKIE)
return;
dir->__flags &= dirent_isroot;
dir->__flags &= (dirent_isroot | dirent_set_d_ino);
return ((fhandler_base *) dir->__fh)->seekdir (dir, loc);
}
@ -255,7 +242,7 @@ closedir (DIR *dir)
int res = ((fhandler_base *) dir->__fh)->closedir (dir);
cygheap->fdtab.release (dir->__d_dirent->d_fd);
cygheap->fdtab.release (dir->__d_fd);
free (dir->__d_dirname);
free (dir->__d_dirent);

3
winsup/cygwin/fhandler.h
View File

@ -47,7 +47,8 @@ enum dirent_states
dirent_isroot = 0x0008,
dirent_saw_cygdrive = 0x0010,
dirent_saw_dev = 0x0020,
dirent_saw_proc = 0x0040
dirent_saw_proc = 0x0040,
dirent_set_d_ino = 0x0080
};
enum conn_state

5
winsup/cygwin/fhandler_disk_file.cc
View File

@ -1359,7 +1359,7 @@ fhandler_disk_file::opendir ()
else
{
strcpy (dir->__d_dirname, get_win32_name ());
dir->__d_dirent->d_version = __DIRENT_VERSION;
dir->__d_dirent->__d_version = __DIRENT_VERSION;
cygheap_fdnew fd;
if (fd < 0)
@ -1367,7 +1367,7 @@ fhandler_disk_file::opendir ()
fd = this;
fd->nohandle (true);
dir->__d_dirent->d_fd = fd;
dir->__d_fd = fd;
dir->__fh = this;
/* FindFirstFile doesn't seem to like duplicate /'s. */
len = strlen (dir->__d_dirname);
@ -1378,7 +1378,6 @@ fhandler_disk_file::opendir ()
dir->__d_cookie = __DIRENT_COOKIE;
dir->__handle = INVALID_HANDLE_VALUE;
dir->__d_position = 0;
dir->__d_dirhash = get_namehash ();
res = dir;
dir->__flags = (pc.normalized_path[0] == '/' && pc.normalized_path[1] == '\0') ? dirent_isroot : 0;

6
winsup/cygwin/fhandler_virtual.cc
View File

@ -71,18 +71,18 @@ fhandler_virtual::opendir ()
else
{
strcpy (dir->__d_dirname, get_name ());
dir->__d_dirent->d_version = __DIRENT_VERSION;
dir->__d_dirent->__d_version = __DIRENT_VERSION;
cygheap_fdnew fd;
if (fd >= 0)
{
fd = this;
fd->nohandle (true);
dir->__d_dirent->d_fd = fd;
dir->__d_fd = fd;
dir->__fh = this;
dir->__d_cookie = __DIRENT_COOKIE;
dir->__handle = INVALID_HANDLE_VALUE;
dir->__d_position = 0;
dir->__d_dirhash = get_namehash ();
// dir->__d_dirhash = get_namehash ();
dir->__flags = dirent_saw_dot | dirent_saw_dot_dot;
res = dir;
res->__flags = 0;

3
winsup/cygwin/include/cygwin/version.h
View File

@ -286,12 +286,13 @@ details. */
148: Add open(2) flags O_SYNC, O_RSYNC, O_DSYNC and O_DIRECT.
149: Add open(2) flag O_NOFOLLOW.
150: Export getsubopt.
151: Export __opendir_with_d_ino
*/
/* Note that we forgot to bump the api for ualarm, strtoll, strtoull */
#define CYGWIN_VERSION_API_MAJOR 0
#define CYGWIN_VERSION_API_MINOR 150
#define CYGWIN_VERSION_API_MINOR 151
/* There is also a compatibity version number associated with the
shared memory regions. It is incremented when incompatible

32
winsup/cygwin/include/sys/dirent.h
View File

@ -16,27 +16,16 @@
#define __DIRENT_VERSION 2
#pragma pack(push,4)
#ifdef __INSIDE_CYGWIN__
#if defined(__INSIDE_CYGWIN__) || defined (__CYGWIN_USE_BIG_TYPES__)
struct dirent
{
long d_version; /* Used since Cygwin 1.3.3. */
__ino64_t __invalid_d_ino; /* DO NOT USE: No longer available since cygwin 1.5.19 */
long d_fd; /* File descriptor of open directory.
Used since Cygwin 1.3.3. */
unsigned __invalid_ino32; /* DO NOT USE: No longer available since cygwin 1.5.19 */
long __d_version; /* Used internally */
__ino64_t __dirent_internal;
__uint32_t __dirent_unused1;
__uint32_t __dirent_internal1;
char d_name[256]; /* FIXME: use NAME_MAX? */
};
#else
#ifdef __CYGWIN_USE_BIG_TYPES__
struct dirent
{
long d_version;
ino_t __invalid_d_ino; /* DO NOT USE: No longer available since cygwin 1.5.19 */
long d_fd;
unsigned long __invalid_ino32; /* DO NOT USE: No longer available since cygwin 1.5.19 */
char d_name[256];
};
#else
struct dirent
{
long d_version;
@ -46,7 +35,6 @@ struct dirent
char d_name[256];
};
#endif
#endif
#pragma pack(pop)
#define __DIRENT_COOKIE 0xdede4242
@ -59,14 +47,22 @@ typedef struct __DIR
struct dirent *__d_dirent;
char *__d_dirname; /* directory name with trailing '*' */
_off_t __d_position; /* used by telldir/seekdir */
__ino64_t __d_dirhash; /* hash of directory name for use by readdir */
int __d_fd;
unsigned __d_unused;
void *__handle;
void *__fh;
unsigned __flags;
} DIR;
#pragma pack(pop)
#ifndef __USE_EXPENSIVE_CYGWIN_D_INO
DIR *opendir (const char *);
#else
#define d_ino __dirent_internal
DIR *__opendir_with_d_ino (const char *);
#define opendir __opendir_with_d_ino
#endif
struct dirent *readdir (DIR *);
int readdir_r (DIR *, struct dirent *, struct dirent **);
void rewinddir (DIR *);