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symlink: open downcall passes symlink target

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on last_error == ERROR_REPARSE, the daemon converts args->path back to wchar and passes it down to the driver

Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
This commit is contained in:
Casey Bodley 2010-10-12 10:00:57 -04:00
parent 374e7ad083
commit 45a14a17ff
2 changed files with 29 additions and 2 deletions
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17
daemon/open.c
View file

@ -328,6 +328,23 @@ int marshall_open(unsigned char *buffer, uint32_t *length, nfs41_upcall *upcall)
status = safe_write(&buffer, length, &args->mode, sizeof(args->mode));
if (status) goto out;
status = safe_write(&buffer, length, &args->changeattr, sizeof(args->changeattr));
if (status) goto out;
if (upcall->last_error == ERROR_REPARSE) {
/* convert args->path to wchar */
WCHAR wpath[NFS41_MAX_PATH_LEN];
unsigned short len = (unsigned short)MultiByteToWideChar(
CP_UTF8, 0, args->path.path, args->path.len, wpath, NFS41_MAX_PATH_LEN);
if (len == 0) {
status = ERROR_BUFFER_OVERFLOW;
goto out;
}
wpath[len++] = L'\0';
len *= sizeof(WCHAR);
dprintf(2, "ERROR_REPARSE -> '%S' [%u]\n", wpath, len);
status = safe_write(&buffer, length, &len, sizeof(len));
if (status) goto out;
status = safe_write(&buffer, length, wpath, len);
}
dprintf(2, "NFS41_OPEN: passing open_state=0x%p mode %o changeattr 0x%x\n",
args->state, args->mode, args->changeattr);
out:

14
sys/nfs41_driver.c
View file

@ -152,6 +152,7 @@ typedef struct _updowncall_entry {
HANDLE session;
HANDLE open_state;
PUNICODE_STRING filename;
UNICODE_STRING symlink;
ULONG access_mask;
ULONG access_mode;
ULONG attrs;
@ -1344,8 +1345,16 @@ nfs41_downcall (
buf += sizeof(HANDLE);
RtlCopyMemory(&cur->u.Open.mode, buf, sizeof(DWORD));
buf += sizeof(DWORD);
RtlCopyMemory(&cur->u.Open.changeattr, buf, sizeof(ULONG));
DbgP("[open] open_state 0x%x mode %o changeattr 0x%x\n",
RtlCopyMemory(&cur->u.Open.changeattr, buf, sizeof(LONGLONG));
buf += sizeof(LONGLONG);
if (tmp->errno == ERROR_REPARSE) {
RtlCopyMemory(&cur->u.Open.symlink.MaximumLength, buf, sizeof(USHORT));
buf += sizeof(USHORT);
cur->u.Open.symlink.Length = cur->u.Open.symlink.MaximumLength - sizeof(WCHAR);
cur->u.Open.symlink.Buffer = (PWCH)buf;
DbgP("[open] ERROR_REPARSE -> '%wZ'\n", &cur->u.Open.symlink);
}
DbgP("[open] open_state 0x%x mode %o changeattr 0x%x\n",
cur->u.Open.open_state, cur->u.Open.mode, cur->u.Open.changeattr);
break;
case NFS41_DIR_QUERY:
@ -2457,6 +2466,7 @@ static NTSTATUS map_open_errors(DWORD status, int len)
case ERROR_NETWORK_ACCESS_DENIED: return STATUS_NETWORK_ACCESS_DENIED;
case ERROR_PATH_NOT_FOUND: return STATUS_OBJECT_PATH_NOT_FOUND;
case ERROR_SHARING_VIOLATION: return STATUS_SHARING_VIOLATION;
case ERROR_REPARSE: return STATUS_REPARSE;
default:
DbgP("[ERROR] nfs41_Create: upcall returned %d returning "
"STATUS_INSUFFICIENT_RESOURCES\n", status);