*/
#include "includes.h"
+#include "smbd/smbd.h"
+#include "system/filesys.h"
+#include "../lib/crypto/md5.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_VFS
struct stream_io {
char *base;
char *xattr_name;
+ void *fsp_name_ptr;
+ files_struct *fsp;
+ vfs_handle_struct *handle;
};
static SMB_INO_T stream_inode(const SMB_STRUCT_STAT *sbuf, const char *sname)
char *upper_sname;
DEBUG(10, ("stream_inode called for %lu/%lu [%s]\n",
- (unsigned long)sbuf->st_dev,
- (unsigned long)sbuf->st_ino, sname));
+ (unsigned long)sbuf->st_ex_dev,
+ (unsigned long)sbuf->st_ex_ino, sname));
upper_sname = talloc_strdup_upper(talloc_tos(), sname);
SMB_ASSERT(upper_sname != NULL);
MD5Init(&ctx);
- MD5Update(&ctx, (unsigned char *)&(sbuf->st_dev),
- sizeof(sbuf->st_dev));
- MD5Update(&ctx, (unsigned char *)&(sbuf->st_ino),
- sizeof(sbuf->st_ino));
+ MD5Update(&ctx, (const unsigned char *)&(sbuf->st_ex_dev),
+ sizeof(sbuf->st_ex_dev));
+ MD5Update(&ctx, (const unsigned char *)&(sbuf->st_ex_ino),
+ sizeof(sbuf->st_ex_ino));
MD5Update(&ctx, (unsigned char *)upper_sname,
talloc_get_size(upper_sname)-1);
MD5Final(hash, &ctx);
return result;
}
-static ssize_t get_xattr_size(connection_struct *conn, const char *fname,
- const char *xattr_name)
+static ssize_t get_xattr_size(connection_struct *conn,
+ files_struct *fsp,
+ const char *fname,
+ const char *xattr_name)
{
NTSTATUS status;
struct ea_struct ea;
ssize_t result;
- status = get_ea_value(talloc_tos(), conn, NULL, fname,
+ status = get_ea_value(talloc_tos(), conn, fsp, fname,
xattr_name, &ea);
if (!NT_STATUS_IS_OK(status)) {
return result;
}
+/**
+ * Given a stream name, populate xattr_name with the xattr name to use for
+ * accessing the stream.
+ */
+static NTSTATUS streams_xattr_get_name(TALLOC_CTX *ctx,
+ const char *stream_name,
+ char **xattr_name)
+{
+ char *stype;
+
+ stype = strchr_m(stream_name + 1, ':');
+
+ *xattr_name = talloc_asprintf(ctx, "%s%s",
+ SAMBA_XATTR_DOSSTREAM_PREFIX,
+ stream_name + 1);
+ if (*xattr_name == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (stype == NULL) {
+ /* Append an explicit stream type if one wasn't specified. */
+ *xattr_name = talloc_asprintf(ctx, "%s:$DATA",
+ *xattr_name);
+ if (*xattr_name == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ } else {
+ /* Normalize the stream type to upercase. */
+ if (!strupper_m(strrchr_m(*xattr_name, ':') + 1)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+
+ DEBUG(10, ("xattr_name: %s, stream_name: %s\n", *xattr_name,
+ stream_name));
+
+ return NT_STATUS_OK;
+}
+
+static bool streams_xattr_recheck(struct stream_io *sio)
+{
+ NTSTATUS status;
+ char *xattr_name = NULL;
+
+ if (sio->fsp->fsp_name == sio->fsp_name_ptr) {
+ return true;
+ }
+
+ if (sio->fsp->fsp_name->stream_name == NULL) {
+ /* how can this happen */
+ errno = EINVAL;
+ return false;
+ }
+
+ status = streams_xattr_get_name(talloc_tos(),
+ sio->fsp->fsp_name->stream_name,
+ &xattr_name);
+ if (!NT_STATUS_IS_OK(status)) {
+ return false;
+ }
+
+ TALLOC_FREE(sio->xattr_name);
+ TALLOC_FREE(sio->base);
+ sio->xattr_name = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(sio->handle, sio->fsp),
+ xattr_name);
+ sio->base = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(sio->handle, sio->fsp),
+ sio->fsp->fsp_name->base_name);
+ sio->fsp_name_ptr = sio->fsp->fsp_name;
+
+ TALLOC_FREE(xattr_name);
+
+ if ((sio->xattr_name == NULL) || (sio->base == NULL)) {
+ return false;
+ }
+
+ return true;
+}
+
+/**
+ * Helper to stat/lstat the base file of an smb_fname.
+ */
+static int streams_xattr_stat_base(vfs_handle_struct *handle,
+ struct smb_filename *smb_fname,
+ bool follow_links)
+{
+ char *tmp_stream_name;
+ int result;
+
+ tmp_stream_name = smb_fname->stream_name;
+ smb_fname->stream_name = NULL;
+ if (follow_links) {
+ result = SMB_VFS_NEXT_STAT(handle, smb_fname);
+ } else {
+ result = SMB_VFS_NEXT_LSTAT(handle, smb_fname);
+ }
+ smb_fname->stream_name = tmp_stream_name;
+ return result;
+}
static int streams_xattr_fstat(vfs_handle_struct *handle, files_struct *fsp,
SMB_STRUCT_STAT *sbuf)
{
+ struct smb_filename *smb_fname_base = NULL;
+ NTSTATUS status;
+ int ret = -1;
struct stream_io *io = (struct stream_io *)
VFS_FETCH_FSP_EXTENSION(handle, fsp);
DEBUG(10, ("streams_xattr_fstat called for %d\n", fsp->fh->fd));
- if (io == NULL) {
+ if (io == NULL || fsp->base_fsp == NULL) {
return SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf);
}
- if (SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf) == -1) {
+ if (!streams_xattr_recheck(io)) {
+ return -1;
+ }
+
+ /* Create an smb_filename with stream_name == NULL. */
+ status = create_synthetic_smb_fname(talloc_tos(),
+ io->base,
+ NULL, NULL,
+ &smb_fname_base);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = map_errno_from_nt_status(status);
+ return -1;
+ }
+
+ if (lp_posix_pathnames()) {
+ ret = SMB_VFS_LSTAT(handle->conn, smb_fname_base);
+ } else {
+ ret = SMB_VFS_STAT(handle->conn, smb_fname_base);
+ }
+ *sbuf = smb_fname_base->st;
+ TALLOC_FREE(smb_fname_base);
+
+ if (ret == -1) {
return -1;
}
- sbuf->st_size = get_xattr_size(handle->conn, io->base, io->xattr_name);
- if (sbuf->st_size == -1) {
+ sbuf->st_ex_size = get_xattr_size(handle->conn, fsp->base_fsp,
+ io->base, io->xattr_name);
+ if (sbuf->st_ex_size == -1) {
return -1;
}
- DEBUG(10, ("sbuf->st_size = %d\n", (int)sbuf->st_size));
+ DEBUG(10, ("sbuf->st_ex_size = %d\n", (int)sbuf->st_ex_size));
- sbuf->st_ino = stream_inode(sbuf, io->xattr_name);
- sbuf->st_mode &= ~S_IFMT;
- sbuf->st_mode |= S_IFREG;
- sbuf->st_blocks = sbuf->st_size % STAT_ST_BLOCKSIZE + 1;
+ sbuf->st_ex_ino = stream_inode(sbuf, io->xattr_name);
+ sbuf->st_ex_mode &= ~S_IFMT;
+ sbuf->st_ex_mode |= S_IFREG;
+ sbuf->st_ex_blocks = sbuf->st_ex_size / STAT_ST_BLOCKSIZE + 1;
return 0;
}
-static int streams_xattr_stat(vfs_handle_struct *handle, const char *fname,
- SMB_STRUCT_STAT *sbuf)
+static int streams_xattr_stat(vfs_handle_struct *handle,
+ struct smb_filename *smb_fname)
{
NTSTATUS status;
- char *base = NULL, *sname = NULL;
int result = -1;
- char *xattr_name;
+ char *xattr_name = NULL;
- if (!is_ntfs_stream_name(fname)) {
- return SMB_VFS_NEXT_STAT(handle, fname, sbuf);
+ if (!is_ntfs_stream_smb_fname(smb_fname)) {
+ return SMB_VFS_NEXT_STAT(handle, smb_fname);
}
- status = split_ntfs_stream_name(talloc_tos(), fname, &base, &sname);
- if (!NT_STATUS_IS_OK(status)) {
- errno = EINVAL;
- return -1;
+ /* Note if lp_posix_paths() is true, we can never
+ * get here as is_ntfs_stream_smb_fname() is
+ * always false. So we never need worry about
+ * not following links here. */
+
+ /* If the default stream is requested, just stat the base file. */
+ if (is_ntfs_default_stream_smb_fname(smb_fname)) {
+ return streams_xattr_stat_base(handle, smb_fname, true);
}
- if (SMB_VFS_STAT(handle->conn, base, sbuf) == -1) {
- goto fail;
+ /* Populate the stat struct with info from the base file. */
+ if (streams_xattr_stat_base(handle, smb_fname, true) == -1) {
+ return -1;
}
- xattr_name = talloc_asprintf(talloc_tos(), "%s%s",
- SAMBA_XATTR_DOSSTREAM_PREFIX, sname);
- if (xattr_name == NULL) {
- errno = ENOMEM;
- goto fail;
+ /* Derive the xattr name to lookup. */
+ status = streams_xattr_get_name(talloc_tos(), smb_fname->stream_name,
+ &xattr_name);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = map_errno_from_nt_status(status);
+ return -1;
}
- sbuf->st_size = get_xattr_size(handle->conn, base, xattr_name);
- if (sbuf->st_size == -1) {
+ /* Augment the base file's stat information before returning. */
+ smb_fname->st.st_ex_size = get_xattr_size(handle->conn, NULL,
+ smb_fname->base_name,
+ xattr_name);
+ if (smb_fname->st.st_ex_size == -1) {
errno = ENOENT;
+ result = -1;
goto fail;
}
- sbuf->st_ino = stream_inode(sbuf, xattr_name);
- sbuf->st_mode &= ~S_IFMT;
- sbuf->st_mode |= S_IFREG;
- sbuf->st_blocks = sbuf->st_size % STAT_ST_BLOCKSIZE + 1;
+ smb_fname->st.st_ex_ino = stream_inode(&smb_fname->st, xattr_name);
+ smb_fname->st.st_ex_mode &= ~S_IFMT;
+ smb_fname->st.st_ex_mode |= S_IFREG;
+ smb_fname->st.st_ex_blocks =
+ smb_fname->st.st_ex_size / STAT_ST_BLOCKSIZE + 1;
result = 0;
fail:
- TALLOC_FREE(base);
- TALLOC_FREE(sname);
+ TALLOC_FREE(xattr_name);
return result;
}
-static int streams_xattr_lstat(vfs_handle_struct *handle, const char *fname,
- SMB_STRUCT_STAT *sbuf)
+static int streams_xattr_lstat(vfs_handle_struct *handle,
+ struct smb_filename *smb_fname)
{
NTSTATUS status;
- char *base, *sname;
int result = -1;
- char *xattr_name;
+ char *xattr_name = NULL;
- if (!is_ntfs_stream_name(fname)) {
- return SMB_VFS_NEXT_LSTAT(handle, fname, sbuf);
+ if (!is_ntfs_stream_smb_fname(smb_fname)) {
+ return SMB_VFS_NEXT_LSTAT(handle, smb_fname);
}
- status = split_ntfs_stream_name(talloc_tos(), fname, &base, &sname);
- if (!NT_STATUS_IS_OK(status)) {
- errno = EINVAL;
- goto fail;
+ /* If the default stream is requested, just stat the base file. */
+ if (is_ntfs_default_stream_smb_fname(smb_fname)) {
+ return streams_xattr_stat_base(handle, smb_fname, false);
}
- if (SMB_VFS_LSTAT(handle->conn, base, sbuf) == -1) {
- goto fail;
+ /* Populate the stat struct with info from the base file. */
+ if (streams_xattr_stat_base(handle, smb_fname, false) == -1) {
+ return -1;
}
- xattr_name = talloc_asprintf(talloc_tos(), "%s%s",
- SAMBA_XATTR_DOSSTREAM_PREFIX, sname);
- if (xattr_name == NULL) {
- errno = ENOMEM;
- goto fail;
+ /* Derive the xattr name to lookup. */
+ status = streams_xattr_get_name(talloc_tos(), smb_fname->stream_name,
+ &xattr_name);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = map_errno_from_nt_status(status);
+ return -1;
}
- sbuf->st_size = get_xattr_size(handle->conn, base, xattr_name);
- if (sbuf->st_size == -1) {
+ /* Augment the base file's stat information before returning. */
+ smb_fname->st.st_ex_size = get_xattr_size(handle->conn, NULL,
+ smb_fname->base_name,
+ xattr_name);
+ if (smb_fname->st.st_ex_size == -1) {
errno = ENOENT;
+ result = -1;
goto fail;
}
- sbuf->st_ino = stream_inode(sbuf, xattr_name);
- sbuf->st_mode &= ~S_IFMT;
- sbuf->st_mode |= S_IFREG;
- sbuf->st_blocks = sbuf->st_size % STAT_ST_BLOCKSIZE + 1;
+ smb_fname->st.st_ex_ino = stream_inode(&smb_fname->st, xattr_name);
+ smb_fname->st.st_ex_mode &= ~S_IFMT;
+ smb_fname->st.st_ex_mode |= S_IFREG;
+ smb_fname->st.st_ex_blocks =
+ smb_fname->st.st_ex_size / STAT_ST_BLOCKSIZE + 1;
result = 0;
+
fail:
- TALLOC_FREE(base);
- TALLOC_FREE(sname);
+ TALLOC_FREE(xattr_name);
return result;
}
-static int streams_xattr_open(vfs_handle_struct *handle, const char *fname,
+static int streams_xattr_open(vfs_handle_struct *handle,
+ struct smb_filename *smb_fname,
files_struct *fsp, int flags, mode_t mode)
{
- TALLOC_CTX *frame;
NTSTATUS status;
+ struct smb_filename *smb_fname_base = NULL;
struct stream_io *sio;
- char *base, *sname;
struct ea_struct ea;
- char *xattr_name;
+ char *xattr_name = NULL;
int baseflags;
int hostfd = -1;
- DEBUG(10, ("streams_xattr_open called for %s\n", fname));
+ DEBUG(10, ("streams_xattr_open called for %s\n",
+ smb_fname_str_dbg(smb_fname)));
- if (!is_ntfs_stream_name(fname)) {
- return SMB_VFS_NEXT_OPEN(handle, fname, fsp, flags, mode);
+ if (!is_ntfs_stream_smb_fname(smb_fname)) {
+ return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
}
- frame = talloc_stackframe();
+ /* If the default stream is requested, just open the base file. */
+ if (is_ntfs_default_stream_smb_fname(smb_fname)) {
+ char *tmp_stream_name;
+ int ret;
+
+ tmp_stream_name = smb_fname->stream_name;
+ smb_fname->stream_name = NULL;
+
+ ret = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
+
+ smb_fname->stream_name = tmp_stream_name;
+
+ return ret;
+ }
- status = split_ntfs_stream_name(talloc_tos(), fname,
- &base, &sname);
+ status = streams_xattr_get_name(talloc_tos(), smb_fname->stream_name,
+ &xattr_name);
if (!NT_STATUS_IS_OK(status)) {
- errno = EINVAL;
+ errno = map_errno_from_nt_status(status);
goto fail;
}
- xattr_name = talloc_asprintf(talloc_tos(), "%s%s",
- SAMBA_XATTR_DOSSTREAM_PREFIX, sname);
- if (xattr_name == NULL) {
- errno = ENOMEM;
+ /* Create an smb_filename with stream_name == NULL. */
+ status = create_synthetic_smb_fname(talloc_tos(),
+ smb_fname->base_name,
+ NULL, NULL,
+ &smb_fname_base);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = map_errno_from_nt_status(status);
goto fail;
}
baseflags &= ~O_EXCL;
baseflags &= ~O_CREAT;
- hostfd = SMB_VFS_OPEN(handle->conn, base, fsp, baseflags, mode);
+ hostfd = SMB_VFS_OPEN(handle->conn, smb_fname_base, fsp,
+ baseflags, mode);
+
+ TALLOC_FREE(smb_fname_base);
/* It is legit to open a stream on a directory, but the base
* fd has to be read-only.
if ((hostfd == -1) && (errno == EISDIR)) {
baseflags &= ~O_ACCMODE;
baseflags |= O_RDONLY;
- hostfd = SMB_VFS_OPEN(handle->conn, fname, fsp, baseflags,
+ hostfd = SMB_VFS_OPEN(handle->conn, smb_fname, fsp, baseflags,
mode);
}
goto fail;
}
- status = get_ea_value(talloc_tos(), handle->conn, NULL, base,
- xattr_name, &ea);
+ status = get_ea_value(talloc_tos(), handle->conn, NULL,
+ smb_fname->base_name, xattr_name, &ea);
DEBUG(10, ("get_ea_value returned %s\n", nt_errstr(status)));
* file for us.
*/
DEBUG(10, ("streams_xattr_open: base file %s not around, "
- "returning ENOENT\n", base));
+ "returning ENOENT\n", smb_fname->base_name));
errno = ENOENT;
goto fail;
}
char null = '\0';
DEBUG(10, ("creating attribute %s on file %s\n",
- xattr_name, base));
-
- if (SMB_VFS_SETXATTR(
- handle->conn, base, xattr_name,
- &null, sizeof(null),
- flags & O_EXCL ? XATTR_CREATE : 0) == -1) {
- goto fail;
+ xattr_name, smb_fname->base_name));
+
+ if (fsp->base_fsp->fh->fd != -1) {
+ if (SMB_VFS_FSETXATTR(
+ fsp->base_fsp, xattr_name,
+ &null, sizeof(null),
+ flags & O_EXCL ? XATTR_CREATE : 0) == -1) {
+ goto fail;
+ }
+ } else {
+ if (SMB_VFS_SETXATTR(
+ handle->conn, smb_fname->base_name,
+ xattr_name, &null, sizeof(null),
+ flags & O_EXCL ? XATTR_CREATE : 0) == -1) {
+ goto fail;
+ }
}
}
}
if (flags & O_TRUNC) {
char null = '\0';
- if (SMB_VFS_SETXATTR(
- handle->conn, base, xattr_name,
- &null, sizeof(null),
- flags & O_EXCL ? XATTR_CREATE : 0) == -1) {
- goto fail;
+ if (fsp->base_fsp->fh->fd != -1) {
+ if (SMB_VFS_FSETXATTR(
+ fsp->base_fsp, xattr_name,
+ &null, sizeof(null),
+ flags & O_EXCL ? XATTR_CREATE : 0) == -1) {
+ goto fail;
+ }
+ } else {
+ if (SMB_VFS_SETXATTR(
+ handle->conn, smb_fname->base_name,
+ xattr_name, &null, sizeof(null),
+ flags & O_EXCL ? XATTR_CREATE : 0) == -1) {
+ goto fail;
+ }
}
}
sio = (struct stream_io *)VFS_ADD_FSP_EXTENSION(handle, fsp,
- struct stream_io);
+ struct stream_io,
+ NULL);
if (sio == NULL) {
errno = ENOMEM;
goto fail;
sio->xattr_name = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(handle, fsp),
xattr_name);
sio->base = talloc_strdup(VFS_MEMCTX_FSP_EXTENSION(handle, fsp),
- base);
+ smb_fname->base_name);
+ sio->fsp_name_ptr = fsp->fsp_name;
+ sio->handle = handle;
+ sio->fsp = fsp;
if ((sio->xattr_name == NULL) || (sio->base == NULL)) {
errno = ENOMEM;
goto fail;
}
- TALLOC_FREE(frame);
return hostfd;
fail:
* BUGBUGBUG -- we would need to call fd_close_posix here, but
* we don't have a full fsp yet
*/
- SMB_VFS_CLOSE(fsp, hostfd);
+ SMB_VFS_CLOSE(fsp);
}
- TALLOC_FREE(frame);
return -1;
}
-static int streams_xattr_unlink(vfs_handle_struct *handle, const char *fname)
+static int streams_xattr_unlink(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname)
{
NTSTATUS status;
- char *base = NULL;
- char *sname = NULL;
int ret = -1;
char *xattr_name;
- if (!is_ntfs_stream_name(fname)) {
- return SMB_VFS_NEXT_UNLINK(handle, fname);
+ if (!is_ntfs_stream_smb_fname(smb_fname)) {
+ return SMB_VFS_NEXT_UNLINK(handle, smb_fname);
}
- status = split_ntfs_stream_name(talloc_tos(), fname, &base, &sname);
- if (!NT_STATUS_IS_OK(status)) {
- errno = EINVAL;
- goto fail;
+ /* If the default stream is requested, just open the base file. */
+ if (is_ntfs_default_stream_smb_fname(smb_fname)) {
+ struct smb_filename *smb_fname_base = NULL;
+
+ status = copy_smb_filename(talloc_tos(), smb_fname,
+ &smb_fname_base);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = map_errno_from_nt_status(status);
+ return -1;
+ }
+
+ ret = SMB_VFS_NEXT_UNLINK(handle, smb_fname_base);
+
+ TALLOC_FREE(smb_fname_base);
+ return ret;
}
- xattr_name = talloc_asprintf(talloc_tos(), "%s%s",
- SAMBA_XATTR_DOSSTREAM_PREFIX, sname);
- if (xattr_name == NULL) {
- errno = ENOMEM;
+ status = streams_xattr_get_name(talloc_tos(), smb_fname->stream_name,
+ &xattr_name);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = map_errno_from_nt_status(status);
goto fail;
}
- ret = SMB_VFS_REMOVEXATTR(handle->conn, base, xattr_name);
+ ret = SMB_VFS_REMOVEXATTR(handle->conn, smb_fname->base_name, xattr_name);
if ((ret == -1) && (errno == ENOATTR)) {
errno = ENOENT;
ret = 0;
fail:
- TALLOC_FREE(base);
- TALLOC_FREE(sname);
+ TALLOC_FREE(xattr_name);
+ return ret;
+}
+
+static int streams_xattr_rename(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname_src,
+ const struct smb_filename *smb_fname_dst)
+{
+ NTSTATUS status;
+ int ret = -1;
+ char *src_xattr_name = NULL;
+ char *dst_xattr_name = NULL;
+ bool src_is_stream, dst_is_stream;
+ ssize_t oret;
+ ssize_t nret;
+ struct ea_struct ea;
+
+ src_is_stream = is_ntfs_stream_smb_fname(smb_fname_src);
+ dst_is_stream = is_ntfs_stream_smb_fname(smb_fname_dst);
+
+ if (!src_is_stream && !dst_is_stream) {
+ return SMB_VFS_NEXT_RENAME(handle, smb_fname_src,
+ smb_fname_dst);
+ }
+
+ /* For now don't allow renames from or to the default stream. */
+ if (is_ntfs_default_stream_smb_fname(smb_fname_src) ||
+ is_ntfs_default_stream_smb_fname(smb_fname_dst)) {
+ errno = ENOSYS;
+ goto done;
+ }
+
+ /* Don't rename if the streams are identical. */
+ if (strcasecmp_m(smb_fname_src->stream_name,
+ smb_fname_dst->stream_name) == 0) {
+ goto done;
+ }
+
+ /* Get the xattr names. */
+ status = streams_xattr_get_name(talloc_tos(),
+ smb_fname_src->stream_name,
+ &src_xattr_name);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = map_errno_from_nt_status(status);
+ goto fail;
+ }
+ status = streams_xattr_get_name(talloc_tos(),
+ smb_fname_dst->stream_name,
+ &dst_xattr_name);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = map_errno_from_nt_status(status);
+ goto fail;
+ }
+
+ /* read the old stream */
+ status = get_ea_value(talloc_tos(), handle->conn, NULL,
+ smb_fname_src->base_name, src_xattr_name, &ea);
+ if (!NT_STATUS_IS_OK(status)) {
+ errno = ENOENT;
+ goto fail;
+ }
+
+ /* (over)write the new stream */
+ nret = SMB_VFS_SETXATTR(handle->conn, smb_fname_src->base_name,
+ dst_xattr_name, ea.value.data, ea.value.length,
+ 0);
+ if (nret < 0) {
+ if (errno == ENOATTR) {
+ errno = ENOENT;
+ }
+ goto fail;
+ }
+
+ /* remove the old stream */
+ oret = SMB_VFS_REMOVEXATTR(handle->conn, smb_fname_src->base_name,
+ src_xattr_name);
+ if (oret < 0) {
+ if (errno == ENOATTR) {
+ errno = ENOENT;
+ }
+ goto fail;
+ }
+
+ done:
+ errno = 0;
+ ret = 0;
+ fail:
+ TALLOC_FREE(src_xattr_name);
+ TALLOC_FREE(dst_xattr_name);
return ret;
}
static bool add_one_stream(TALLOC_CTX *mem_ctx, unsigned int *num_streams,
struct stream_struct **streams,
- const char *name, SMB_OFF_T size,
- SMB_OFF_T alloc_size)
+ const char *name, off_t size,
+ off_t alloc_size)
{
struct stream_struct *tmp;
- tmp = TALLOC_REALLOC_ARRAY(mem_ctx, *streams, struct stream_struct,
+ tmp = talloc_realloc(mem_ctx, *streams, struct stream_struct,
(*num_streams)+1);
if (tmp == NULL) {
return false;
struct streaminfo_state state;
if ((fsp != NULL) && (fsp->fh->fd != -1)) {
- if (is_ntfs_stream_name(fsp->fsp_name)) {
- return NT_STATUS_INVALID_PARAMETER;
- }
ret = SMB_VFS_FSTAT(fsp, &sbuf);
}
else {
- if (is_ntfs_stream_name(fname)) {
- return NT_STATUS_INVALID_PARAMETER;
+ struct smb_filename *smb_fname = NULL;
+ status = create_synthetic_smb_fname(talloc_tos(), fname, NULL,
+ NULL, &smb_fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ if (lp_posix_pathnames()) {
+ ret = SMB_VFS_LSTAT(handle->conn, smb_fname);
+ } else {
+ ret = SMB_VFS_STAT(handle->conn, smb_fname);
}
- ret = SMB_VFS_STAT(handle->conn, fname, &sbuf);
+ sbuf = smb_fname->st;
+ TALLOC_FREE(smb_fname);
}
if (ret == -1) {
return map_nt_error_from_unix(errno);
}
- state.streams = NULL;
- state.num_streams = 0;
-
- if (!S_ISDIR(sbuf.st_mode)) {
- if (!add_one_stream(mem_ctx,
- &state.num_streams, &state.streams,
- "::$DATA", sbuf.st_size,
- get_allocation_size(handle->conn, fsp,
- &sbuf))) {
- return NT_STATUS_NO_MEMORY;
- }
- }
-
+ state.streams = *pstreams;
+ state.num_streams = *pnum_streams;
state.mem_ctx = mem_ctx;
state.handle = handle;
state.status = NT_STATUS_OK;
*pnum_streams = state.num_streams;
*pstreams = state.streams;
- return NT_STATUS_OK;
+
+ return SMB_VFS_NEXT_STREAMINFO(handle, fsp, fname, mem_ctx, pnum_streams, pstreams);
}
-static uint32_t streams_xattr_fs_capabilities(struct vfs_handle_struct *handle)
+static uint32_t streams_xattr_fs_capabilities(struct vfs_handle_struct *handle,
+ enum timestamp_set_resolution *p_ts_res)
{
- return SMB_VFS_NEXT_FS_CAPABILITIES(handle) | FILE_NAMED_STREAMS;
+ return SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res) | FILE_NAMED_STREAMS;
}
static ssize_t streams_xattr_pwrite(vfs_handle_struct *handle,
files_struct *fsp, const void *data,
- size_t n, SMB_OFF_T offset)
+ size_t n, off_t offset)
{
struct stream_io *sio =
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
}
+ if (!streams_xattr_recheck(sio)) {
+ return -1;
+ }
+
status = get_ea_value(talloc_tos(), handle->conn, fsp->base_fsp,
sio->base, sio->xattr_name, &ea);
if (!NT_STATUS_IS_OK(status)) {
if ((offset + n) > ea.value.length-1) {
uint8 *tmp;
- tmp = TALLOC_REALLOC_ARRAY(talloc_tos(), ea.value.data, uint8,
+ tmp = talloc_realloc(talloc_tos(), ea.value.data, uint8,
offset + n + 1);
if (tmp == NULL) {
memcpy(ea.value.data + offset, data, n);
- ret = SMB_VFS_SETXATTR(fsp->conn, fsp->base_fsp->fsp_name,
+ if (fsp->base_fsp->fh->fd != -1) {
+ ret = SMB_VFS_FSETXATTR(fsp->base_fsp,
sio->xattr_name,
ea.value.data, ea.value.length, 0);
-
+ } else {
+ ret = SMB_VFS_SETXATTR(fsp->conn,
+ fsp->base_fsp->fsp_name->base_name,
+ sio->xattr_name,
+ ea.value.data, ea.value.length, 0);
+ }
TALLOC_FREE(ea.value.data);
if (ret == -1) {
static ssize_t streams_xattr_pread(vfs_handle_struct *handle,
files_struct *fsp, void *data,
- size_t n, SMB_OFF_T offset)
+ size_t n, off_t offset)
{
struct stream_io *sio =
(struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
struct ea_struct ea;
NTSTATUS status;
- size_t length, overlap;
+ size_t length, overlap;
+
+ DEBUG(10, ("streams_xattr_pread: offset=%d, size=%d\n",
+ (int)offset, (int)n));
if (sio == NULL) {
return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
}
+ if (!streams_xattr_recheck(sio)) {
+ return -1;
+ }
+
status = get_ea_value(talloc_tos(), handle->conn, fsp->base_fsp,
sio->base, sio->xattr_name, &ea);
if (!NT_STATUS_IS_OK(status)) {
length = ea.value.length-1;
+ DEBUG(10, ("streams_xattr_pread: get_ea_value returned %d bytes\n",
+ (int)length));
+
/* Attempt to read past EOF. */
if (length <= offset) {
- errno = EINVAL;
- return -1;
+ return 0;
}
overlap = (offset + n) > length ? (length - offset) : n;
return overlap;
}
-/* VFS operations structure */
-
-static vfs_op_tuple streams_xattr_ops[] = {
- {SMB_VFS_OP(streams_xattr_fs_capabilities), SMB_VFS_OP_FS_CAPABILITIES,
- SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(streams_xattr_open), SMB_VFS_OP_OPEN,
- SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(streams_xattr_stat), SMB_VFS_OP_STAT,
- SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(streams_xattr_fstat), SMB_VFS_OP_FSTAT,
- SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(streams_xattr_lstat), SMB_VFS_OP_LSTAT,
- SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(streams_xattr_pread), SMB_VFS_OP_PREAD,
- SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(streams_xattr_pwrite), SMB_VFS_OP_PWRITE,
- SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(streams_xattr_lstat), SMB_VFS_OP_LSTAT,
- SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(streams_xattr_unlink), SMB_VFS_OP_UNLINK,
- SMB_VFS_LAYER_TRANSPARENT},
- {SMB_VFS_OP(streams_xattr_streaminfo), SMB_VFS_OP_STREAMINFO,
- SMB_VFS_LAYER_OPAQUE},
- {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
+static int streams_xattr_ftruncate(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ off_t offset)
+{
+ int ret;
+ uint8 *tmp;
+ struct ea_struct ea;
+ NTSTATUS status;
+ struct stream_io *sio =
+ (struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
+
+ DEBUG(10, ("streams_xattr_ftruncate called for file %s offset %.0f\n",
+ fsp_str_dbg(fsp), (double)offset));
+
+ if (sio == NULL) {
+ return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, offset);
+ }
+
+ if (!streams_xattr_recheck(sio)) {
+ return -1;
+ }
+
+ status = get_ea_value(talloc_tos(), handle->conn, fsp->base_fsp,
+ sio->base, sio->xattr_name, &ea);
+ if (!NT_STATUS_IS_OK(status)) {
+ return -1;
+ }
+
+ tmp = talloc_realloc(talloc_tos(), ea.value.data, uint8,
+ offset + 1);
+
+ if (tmp == NULL) {
+ TALLOC_FREE(ea.value.data);
+ errno = ENOMEM;
+ return -1;
+ }
+
+ /* Did we expand ? */
+ if (ea.value.length < offset + 1) {
+ memset(&tmp[ea.value.length], '\0',
+ offset + 1 - ea.value.length);
+ }
+
+ ea.value.data = tmp;
+ ea.value.length = offset + 1;
+ ea.value.data[offset] = 0;
+
+ if (fsp->base_fsp->fh->fd != -1) {
+ ret = SMB_VFS_FSETXATTR(fsp->base_fsp,
+ sio->xattr_name,
+ ea.value.data, ea.value.length, 0);
+ } else {
+ ret = SMB_VFS_SETXATTR(fsp->conn,
+ fsp->base_fsp->fsp_name->base_name,
+ sio->xattr_name,
+ ea.value.data, ea.value.length, 0);
+ }
+
+ TALLOC_FREE(ea.value.data);
+
+ if (ret == -1) {
+ return -1;
+ }
+
+ return 0;
+}
+
+static int streams_xattr_fallocate(struct vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ enum vfs_fallocate_mode mode,
+ off_t offset,
+ off_t len)
+{
+ struct stream_io *sio =
+ (struct stream_io *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
+
+ DEBUG(10, ("streams_xattr_fallocate called for file %s offset %.0f"
+ "len = %.0f\n",
+ fsp_str_dbg(fsp), (double)offset, (double)len));
+
+ if (sio == NULL) {
+ return SMB_VFS_NEXT_FALLOCATE(handle, fsp, mode, offset, len);
+ }
+
+ if (!streams_xattr_recheck(sio)) {
+ return errno;
+ }
+
+ /* Let the pwrite code path handle it. */
+ return ENOSYS;
+}
+
+
+static struct vfs_fn_pointers vfs_streams_xattr_fns = {
+ .fs_capabilities_fn = streams_xattr_fs_capabilities,
+ .open_fn = streams_xattr_open,
+ .stat_fn = streams_xattr_stat,
+ .fstat_fn = streams_xattr_fstat,
+ .lstat_fn = streams_xattr_lstat,
+ .pread_fn = streams_xattr_pread,
+ .pwrite_fn = streams_xattr_pwrite,
+ .unlink_fn = streams_xattr_unlink,
+ .rename_fn = streams_xattr_rename,
+ .ftruncate_fn = streams_xattr_ftruncate,
+ .fallocate_fn = streams_xattr_fallocate,
+ .streaminfo_fn = streams_xattr_streaminfo,
};
NTSTATUS vfs_streams_xattr_init(void);
NTSTATUS vfs_streams_xattr_init(void)
{
return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "streams_xattr",
- streams_xattr_ops);
+ &vfs_streams_xattr_fns);
}
git.samba.org / kai / samba.git / blobdiff