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* dcrt0.cc (dummy_autoload): Add load statement for RegDeleteValueA.

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* external.cc (get_cygdrive_prefixes): New function.
(cygwin_internal): Add CW_GET_CYGDRIVE_PREFIXES case.
* path.cc (mount_info::read_cygdrive_info_from_registry): Read system cygdrive
prefix if user one is undefined.
(mount_info::write_cygdrive_info_to_registry): Write cygdrive prefix to the
appropriate registry hive.  Overwrite in-memory copy of cygdrive, if
appropriate.
(mount_info::remove_cygdrive_info_from_registry): New method.
(mount_info::get_cygdrive_prefixes): New method.
(cygwin_umount): Remove cygdrive prefix, if appropriate.
* registry.cc (reg_key::killvalue): New method.
* shared.h (class reg_key): Add killvalue, remove_cygdrive_info_to_registry,
and get_cygdrive_prefixes declarations.
* include/sys/cygwin.h (cygwin_getinfo_types): Add CW_GET_CYGDRIVE_PREFIXES.
This commit is contained in:
Christopher Faylor
2000-07-28 22:33:43 +00:00
parent c84b63e961
commit 637f5ce0fe
7 changed files with 155 additions and 12 deletions
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114
winsup/cygwin/path.cc
View File

@@ -1497,17 +1497,39 @@ mount_info::del_reg_mount (const char * posix_path, unsigned flags)
void
mount_info::read_cygdrive_info_from_registry ()
{
/* reg_key for user mounts in HKEY_CURRENT_USER. */
/* reg_key for user path prefix in HKEY_CURRENT_USER. */
reg_key r;
if (r.get_string ("cygdrive prefix", cygdrive, sizeof (cygdrive), "") != 0)
{
/* Didn't find it so write the default to the registry and use it. */
write_cygdrive_info_to_registry ("/cygdrive", MOUNT_AUTO);
/* Didn't find the user path prefix so check the system path prefix. */
/* reg_key for system path prefix in HKEY_LOCAL_MACHINE. */
reg_key r2 (HKEY_LOCAL_MACHINE, KEY_ALL_ACCESS, "SOFTWARE",
CYGWIN_INFO_CYGNUS_REGISTRY_NAME,
CYGWIN_INFO_CYGWIN_REGISTRY_NAME,
CYGWIN_INFO_CYGWIN_MOUNT_REGISTRY_NAME,
NULL);
if (r2.get_string ("cygdrive prefix", cygdrive, sizeof (cygdrive), "") != 0)
{
/* Didn't find either so write the default to the registry and use it.
NOTE: We are writing and using the user path prefix. */
write_cygdrive_info_to_registry ("/cygdrive", MOUNT_AUTO);
}
else
{
/* Fetch system cygdrive_flags from registry; returns MOUNT_AUTO on
error. */
cygdrive_flags = r2.get_int ("cygdrive flags", MOUNT_AUTO);
slashify (cygdrive, cygdrive, 1);
cygdrive_len = strlen(cygdrive);
}
}
else
{
/* Fetch cygdrive_flags from registry; returns MOUNT_AUTO on error. */
/* Fetch user cygdrive_flags from registry; returns MOUNT_AUTO on
error. */
cygdrive_flags = r.get_int ("cygdrive flags", MOUNT_AUTO);
slashify (cygdrive, cygdrive, 1);
cygdrive_len = strlen(cygdrive);
@@ -1521,8 +1543,16 @@ mount_info::read_cygdrive_info_from_registry ()
int
mount_info::write_cygdrive_info_to_registry (const char *cygdrive_prefix, unsigned flags)
{
/* reg_key for user mounts in HKEY_CURRENT_USER. */
reg_key r;
/* Determine whether to modify user or system cygdrive path prefix. */
HKEY top = (flags & MOUNT_SYSTEM) ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
/* reg_key for user path prefix in HKEY_CURRENT_USER or system path prefix in
HKEY_LOCAL_MACHINE. */
reg_key r (top, KEY_ALL_ACCESS, "SOFTWARE",
CYGWIN_INFO_CYGNUS_REGISTRY_NAME,
CYGWIN_INFO_CYGWIN_REGISTRY_NAME,
CYGWIN_INFO_CYGWIN_MOUNT_REGISTRY_NAME,
NULL);
/* Verify cygdrive prefix starts with a forward slash and if there's
another character, it's not a slash. */
@@ -1541,14 +1571,64 @@ mount_info::write_cygdrive_info_to_registry (const char *cygdrive_prefix, unsign
r.set_string ("cygdrive prefix", hold_cygdrive_prefix);
r.set_int ("cygdrive flags", flags);
/* This also needs to go in the in-memory copy of "cygdrive" */
slashify (cygdrive_prefix, cygwin_shared->mount.cygdrive, 1);
cygwin_shared->mount.cygdrive_flags = flags;
cygwin_shared->mount.cygdrive_len = strlen(cygwin_shared->mount.cygdrive);
/* This also needs to go in the in-memory copy of "cygdrive", but only if
appropriate:
1. setting user path prefix, or
2. overwriting (a previous) system path prefix */
if ((flags & MOUNT_SYSTEM) == 0 ||
(cygwin_shared->mount.cygdrive_flags & MOUNT_SYSTEM) != 0)
{
slashify (cygdrive_prefix, cygwin_shared->mount.cygdrive, 1);
cygwin_shared->mount.cygdrive_flags = flags;
cygwin_shared->mount.cygdrive_len = strlen(cygwin_shared->mount.cygdrive);
}
return 0;
}
int
mount_info::remove_cygdrive_info_from_registry (const char *cygdrive_prefix, unsigned flags)
{
/* Determine whether to modify user or system cygdrive path prefix. */
HKEY top = (flags & MOUNT_SYSTEM) ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
/* reg_key for user path prefix in HKEY_CURRENT_USER or system path prefix in
HKEY_LOCAL_MACHINE. */
reg_key r (top, KEY_ALL_ACCESS, "SOFTWARE",
CYGWIN_INFO_CYGNUS_REGISTRY_NAME,
CYGWIN_INFO_CYGWIN_REGISTRY_NAME,
CYGWIN_INFO_CYGWIN_MOUNT_REGISTRY_NAME,
NULL);
/* Delete cygdrive prefix and flags. */
int res = r.killvalue ("cygdrive prefix");
int res2 = r.killvalue ("cygdrive flags");
/* Reinitialize the cygdrive path prefix to reflect to removal from the
registry. */
read_cygdrive_info_from_registry ();
return (res != ERROR_SUCCESS) ? res : res2;
}
int
mount_info::get_cygdrive_prefixes (char *user, char *system)
{
/* Get the user path prefix from HKEY_CURRENT_USER. */
reg_key r;
int res = r.get_string ("cygdrive prefix", user, MAX_PATH, "");
/* Get the system path prefix from HKEY_LOCAL_MACHINE. */
reg_key r2 (HKEY_LOCAL_MACHINE, KEY_ALL_ACCESS, "SOFTWARE",
CYGWIN_INFO_CYGNUS_REGISTRY_NAME,
CYGWIN_INFO_CYGWIN_REGISTRY_NAME,
CYGWIN_INFO_CYGWIN_MOUNT_REGISTRY_NAME,
NULL);
int res2 = r2.get_string ("cygdrive prefix", system, MAX_PATH, "");
return (res != ERROR_SUCCESS) ? res : res2;
}
struct mntent *
mount_info::getmntent (int x)
{
@@ -1982,7 +2062,19 @@ extern "C"
int
cygwin_umount (const char *path, unsigned flags)
{
int res = cygwin_shared->mount.del_item (path, flags, TRUE);
int res = -1;
if (flags & MOUNT_AUTO)
{
/* When flags include MOUNT_AUTO, take this to mean that we actually want
to remove the cygdrive prefix and flags without actually unmounting
anything. */
res = cygwin_shared->mount.remove_cygdrive_info_from_registry (path, flags);
}
else
{
res = cygwin_shared->mount.del_item (path, flags, TRUE);
}
syscall_printf ("%d = cygwin_umount (%s, %d)", res, path, flags);
return res;