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path.cc (mount_info::init): Eliminate the mount_slash feature.

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(mount_slash): Eliminated.
        (mount_info::read_mounts): Eliminate looking up existing entries. The
        loop for deleting cygpath entries is done only when such entries exist.
        (mount_info::from_registry): Eliminate sorting.
        (mount_info::add_item): Call add_reg_mount if necessary. Check nmounts
        more precisely. Use strcasematch in looking up existing entries.
        (mount_info::del_item): Call del_reg_mount if necessary. Use
        strcasematch. Use memmove instead of memcpy.
        (mount_info::import_v1_registry): Everything is done in this method.
        (mount_info::to_registry): Eliminated.
        (mount_info::from_v1_registry): Eliminated.
        (cygwin_umount): Simply call del_item.
        shared.h: Modify the declaration of add_item and del_item. Remove the
        declaration of from_v1_registry.
This commit is contained in:
Corinna Vinschen 2000-06-08 13:24:52 +00:00
parent 9500a3db90
commit 95bdb4966f
3 changed files with 88 additions and 141 deletions
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18
winsup/cygwin/ChangeLog
View file

@ -1,3 +1,21 @@
2000-06-07 Kazuhiro Fujieda <fujieda@jaist.ac.jp>
path.cc (mount_info::init): Eliminate the mount_slash feature.
(mount_slash): Eliminated.
(mount_info::read_mounts): Eliminate looking up existing entries. The
loop for deleting cygpath entries is done only when such entries exist.
(mount_info::from_registry): Eliminate sorting.
(mount_info::add_item): Call add_reg_mount if necessary. Check nmounts
more precisely. Use strcasematch in looking up existing entries.
(mount_info::del_item): Call del_reg_mount if necessary. Use
strcasematch. Use memmove instead of memcpy.
(mount_info::import_v1_registry): Everything is done in this method.
(mount_info::to_registry): Eliminated.
(mount_info::from_v1_registry): Eliminated.
(cygwin_umount): Simply call del_item.
shared.h: Modify the declaration of add_item and del_item. Remove the
declaration of from_v1_registry.
Wed Jun 7 23:56:10 2000 Christopher Faylor <cgf@cygnus.com>
* include/cygwin/version.h: Bump DLL minor version number to 3.

206
winsup/cygwin/path.cc
View file

@ -80,6 +80,7 @@ details. */
#include <errno.h>
#include "winsup.h"
#include <ctype.h>
#include <winioctl.h>
static int normalize_win32_path (const char *cwd, const char *src, char *dst);
static char *getcwd_inner (char *buf, size_t ulen, int posix_p);
@ -385,12 +386,14 @@ out:
debug_printf ("GetVolumeInformation(%s) = ERR, full_path(%s), set_has_acls(FALSE)",
tmp_buf, full_path, GetLastError ());
set_has_acls (FALSE);
set_has_reparse_points (FALSE);
}
else
{
debug_printf ("GetVolumeInformation(%s) = OK, full_path(%s), set_has_acls(%d)",
tmp_buf, full_path, volflags & FS_PERSISTENT_ACLS);
set_has_acls (volflags & FS_PERSISTENT_ACLS);
set_has_reparse_points (volflags & FILE_SUPPORTS_REPARSE_POINTS);
}
}
@ -845,44 +848,12 @@ conv_path_list (const char *src, char *dst, int to_posix_p)
void
mount_info::init ()
{
int found_slash = 0;
nmounts = 0;
had_to_create_mount_areas = 0;
/* Fetch the mount table and cygdrive-related information from
the registry. */
from_registry ();
if (dynamically_loaded)
return;
/* If slash isn't already mounted, mount system directory as slash. */
if (nmounts != 0)
for (int i = 0; i < nmounts; i++)
{
if (strcmp (mount[i].posix_path, "/") == 0)
{
found_slash = 1;
break;
}
}
if (!found_slash)
mount_slash ();
}
/* mount_slash: mount the system partition as slash. */
void
mount_info::mount_slash ()
{
char drivestring[MAX_PATH];
GetSystemDirectory (drivestring, MAX_PATH);
drivestring[2] = 0; /* truncate path to "<drive>:" */
if (add_reg_mount (drivestring, "/", 0) == 0)
add_item (drivestring, "/", 0);
}
/* conv_to_win32_path: Ensure src_path is a pure Win32 path and store
@ -1270,30 +1241,13 @@ mount_info::read_mounts (reg_key& r)
char posix_path[MAX_PATH];
HKEY key = r.get_key ();
DWORD i, posix_path_size;
loop:
for (i = 0; ;i++)
{
posix_path_size = MAX_PATH;
LONG err = RegEnumKeyEx (key, i, posix_path, &posix_path_size, NULL,
NULL, NULL, NULL);
if (err != ERROR_SUCCESS)
break;
if (iscygdrive (posix_path))
{
/* This shouldn't be in the mount table. */
(void) r.kill (posix_path);
goto loop;
}
}
int found_cygdrive = FALSE;
/* Loop through subkeys */
/* FIXME: we would like to not check MAX_MOUNTS but the heap in the
shared area is currently statically allocated so we can't have an
arbitrarily large number of mounts. */
for (DWORD i = 0; i < MAX_MOUNTS; i++)
for (DWORD i = 0; ; i++)
{
char native_path[MAX_PATH];
int mount_flags;
@ -1315,27 +1269,42 @@ loop:
if (iscygdrive (posix_path))
{
/* This shouldn't be in the mount table. */
// (void) r.kill (posix_path);
found_cygdrive = TRUE;
continue;
}
/* Get a reg_key based on i. */
reg_key subkey = reg_key (key, KEY_READ, posix_path, NULL);
/* Check the mount table for prefix matches. */
for (int j = 0; j < nmounts; j++)
if (strcasematch (mount[j].posix_path, posix_path))
goto next; /* Can't have more than one */
/* Fetch info from the subkey. */
subkey.get_string ("native", native_path, sizeof (native_path), "");
mount_flags = subkey.get_int ("flags", 0);
/* Add mount_item corresponding to registry mount point. */
cygwin_shared->mount.add_item (native_path, posix_path, mount_flags);
next:
continue;
int res = cygwin_shared->mount.add_item (native_path, posix_path, mount_flags, FALSE);
if (res && get_errno () == EMFILE)
break; /* The number of entries exceeds MAX_MOUNTS */
}
if (!found_cygdrive)
return;
loop:
for (i = 0; ;i++)
{
posix_path_size = MAX_PATH;
LONG err = RegEnumKeyEx (key, i, posix_path, &posix_path_size, NULL,
NULL, NULL, NULL);
if (err != ERROR_SUCCESS)
break;
if (iscygdrive (posix_path))
{
/* This shouldn't be in the mount table. */
(void) r.kill (posix_path);
goto loop;
}
}
}
@ -1370,8 +1339,6 @@ mount_info::from_registry ()
old mounts. */
if (had_to_create_mount_areas == 2)
import_v1_mounts ();
sort ();
}
/* add_reg_mount: Add mount item to registry. Return zero on success,
@ -1622,22 +1589,15 @@ mount_info::sort ()
qsort (native_sorted, nmounts, sizeof (native_sorted[0]), sort_by_native_name);
}
/* Add an entry to the in-memory mount table.
/* Add an entry to the mount table.
Returns 0 on success, -1 on failure and errno is set.
This is where all argument validation is done. It may not make sense to
do this when called internally, but it's cleaner to keep it all here. */
int
mount_info::add_item (const char *native, const char *posix, unsigned mountflags)
mount_info::add_item (const char *native, const char *posix, unsigned mountflags, int reg_p)
{
/* Can't add more than MAX_MOUNTS. */
if (nmounts == MAX_MOUNTS)
{
set_errno (EMFILE);
return -1;
}
/* Something's wrong if either path is NULL or empty, or if it's
not a UNC or absolute path. */
@ -1679,20 +1639,27 @@ mount_info::add_item (const char *native, const char *posix, unsigned mountflags
/* Write over an existing mount item with the same POSIX path if
it exists and is from the same registry area. */
for (int i = 0; i < nmounts; i++)
int i;
for (i = 0; i < nmounts; i++)
{
if ((strcmp (mount[i].posix_path, posixtmp) == 0) &&
((mount[i].flags & MOUNT_SYSTEM) == (mountflags & MOUNT_SYSTEM)))
{
/* replace existing mount item */
mount[i].init (nativetmp, posixtmp, mountflags);
goto sortit;
}
if (strcasematch (mount[i].posix_path, posixtmp) &&
(mount[i].flags & MOUNT_SYSTEM) == (mountflags & MOUNT_SYSTEM))
break;
}
mount[nmounts++].init (nativetmp, posixtmp, mountflags);
/* Can't add more than MAX_MOUNTS. */
if (i == nmounts && nmounts < MAX_MOUNTS)
i = nmounts++;
else
{
set_errno (EMFILE);
return -1;
}
sortit:
if (reg_p && add_reg_mount (nativetmp, posixtmp, mountflags))
return -1;
mount[i].init (nativetmp, posixtmp, mountflags);
sort ();
return 0;
@ -1707,12 +1674,12 @@ sortit:
*/
int
mount_info::del_item (const char *path, unsigned flags)
mount_info::del_item (const char *path, unsigned flags, int reg_p)
{
char pathtmp[MAX_PATH];
/* Something's wrong if path is NULL or empty. */
if ((path == NULL) || (*path == 0))
if (path == NULL || *path == 0)
{
set_errno (EINVAL);
return -1;
@ -1723,18 +1690,22 @@ mount_info::del_item (const char *path, unsigned flags)
debug_printf ("%s[%s]", path, pathtmp);
if (reg_p && del_reg_mount (pathtmp, flags)
&& del_reg_mount (path, flags)) /* for old irregular entries */
return -1;
for (int i = 0; i < nmounts; i++)
{
/* Delete if paths and mount locations match. */
if (((strcmp (mount[i].posix_path, pathtmp) == 0
|| strcmp (mount[i].native_path, pathtmp) == 0)) &&
((mount[i].flags & MOUNT_SYSTEM) == (flags & MOUNT_SYSTEM)))
if ((strcasematch (mount[i].posix_path, pathtmp)
|| strcasematch (mount[i].native_path, pathtmp)) &&
(mount[i].flags & MOUNT_SYSTEM) == (flags & MOUNT_SYSTEM))
{
nmounts--; /* One less mount table entry */
/* Fill in the hole if not at the end of the table */
if (i < nmounts)
memcpy (mount + i, mount + i + 1,
sizeof (mount[i]) * (nmounts - i));
memmove (mount + i, mount + i + 1,
sizeof (mount[i]) * (nmounts - i));
sort (); /* Resort the table */
return 0;
}
@ -1781,16 +1752,18 @@ mount_info::read_v1_mounts (reg_key r, unsigned which)
we're reading. */
mountflags |= which;
cygwin_shared->mount.add_item (win32path, unixpath, mountflags);
int res = cygwin_shared->mount.add_item (win32path, unixpath, mountflags, TRUE);
if (res && get_errno () == EMFILE)
break; /* The number of entries exceeds MAX_MOUNTS */
}
}
}
/* from_v1_registry: Build the entire mount table from the old v1 registry
mount area. */
/* import_v1_mounts: If v1 mounts are present, load them and write
the new entries to the new registry area. */
void
mount_info::from_v1_registry ()
mount_info::import_v1_mounts ()
{
reg_key r (HKEY_CURRENT_USER, KEY_ALL_ACCESS,
"SOFTWARE",
@ -1814,43 +1787,6 @@ mount_info::from_v1_registry ()
"mounts",
NULL);
read_v1_mounts (r1, MOUNT_SYSTEM);
/* Note: we don't need to sort internal table here since it is
done in main from_registry call after this function would be
run. */
}
/* import_v1_mounts: If v1 mounts are present, load them and write
the new entries to the new registry area. */
void
mount_info::import_v1_mounts ()
{
/* Read in old mounts into memory. */
from_v1_registry ();
/* Write all mounts to the new registry. */
to_registry ();
}
/* to_registry: For every mount point in memory, add a corresponding
registry mount point. */
void
mount_info::to_registry ()
{
for (int i = 0; i < MAX_MOUNTS; i++)
{
if (i < nmounts)
{
mount_item *p = mount + i;
add_reg_mount (p->native_path, p->posix_path, p->flags);
debug_printf ("%02x: %s, %s, %d",
i, p->native_path, p->posix_path, p->flags);
}
}
}
/************************* mount_item class ****************************/
@ -1951,10 +1887,7 @@ mount (const char *win32_path, const char *posix_path, unsigned flags)
return res; /* Don't try to add cygdrive prefix. */
}
res = cygwin_shared->mount.add_reg_mount (win32_path, posix_path, flags);
if (res == 0)
cygwin_shared->mount.add_item (win32_path, posix_path, flags);
res = cygwin_shared->mount.add_item (win32_path, posix_path, flags, TRUE);
}
syscall_printf ("%d = mount (%s, %s, %p)", res, win32_path, posix_path, flags);
@ -1981,10 +1914,7 @@ extern "C"
int
cygwin_umount (const char *path, unsigned flags)
{
int res = cygwin_shared->mount.del_reg_mount (path, flags);
if (res == 0)
cygwin_shared->mount.del_item (path, flags);
int res = cygwin_shared->mount.del_item (path, flags, TRUE);
syscall_printf ("%d = cygwin_umount (%s, %d)", res, path, flags);
return res;

5
winsup/cygwin/shared.h
View file

@ -301,11 +301,10 @@ public:
int had_to_create_mount_areas;
void init ();
int add_item (const char *dev, const char *path, unsigned flags);
int del_item (const char *path, unsigned flags);
int add_item (const char *dev, const char *path, unsigned flags, int reg_p);
int del_item (const char *path, unsigned flags, int reg_p);
void from_registry ();
void from_v1_registry ();
int add_reg_mount (const char * native_path, const char * posix_path,
unsigned mountflags);
int del_reg_mount (const char * posix_path, unsigned mountflags);