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https://github.com/samba-team/samba.git
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vfs_fruit: refactor fruit_pread and fruit_pwrite and use new adouble API
Use struct fio to denote a fsp handle is for a stream we care about. BUG: https://bugzilla.samba.org/show_bug.cgi?id=12427 Signed-off-by: Ralph Boehme <slow@samba.org> Reviewed-by: Uri Simchoni <uri@samba.org>
This commit is contained in:
Ralph Boehme
Uri Simchoni
parent
6537c56de5
commit
fcb9c840d7
@ -3523,231 +3523,405 @@ exit_rmdir:
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return SMB_VFS_NEXT_RMDIR(handle, smb_fname);
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}
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static ssize_t fruit_pread_meta_stream(vfs_handle_struct *handle,
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files_struct *fsp, void *data,
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size_t n, off_t offset)
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{
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return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
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}
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static ssize_t fruit_pread_meta_adouble(vfs_handle_struct *handle,
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files_struct *fsp, void *data,
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size_t n, off_t offset)
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{
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AfpInfo *ai = NULL;
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struct adouble *ad = NULL;
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char afpinfo_buf[AFP_INFO_SIZE];
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char *p = NULL;
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ssize_t nread;
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ai = afpinfo_new(talloc_tos());
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if (ai == NULL) {
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return -1;
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}
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ad = ad_fget(talloc_tos(), handle, fsp, ADOUBLE_META);
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if (ad == NULL) {
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nread = -1;
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goto fail;
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}
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p = ad_get_entry(ad, ADEID_FINDERI);
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if (p == NULL) {
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DBG_ERR("No ADEID_FINDERI for [%s]\n", fsp_str_dbg(fsp));
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nread = -1;
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goto fail;
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}
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memcpy(&ai->afpi_FinderInfo[0], p, ADEDLEN_FINDERI);
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nread = afpinfo_pack(ai, afpinfo_buf);
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if (nread != AFP_INFO_SIZE) {
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nread = -1;
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goto fail;
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}
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memcpy(data, afpinfo_buf, n);
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nread = n;
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fail:
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TALLOC_FREE(ai);
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return nread;
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}
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static ssize_t fruit_pread_meta(vfs_handle_struct *handle,
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files_struct *fsp, void *data,
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size_t n, off_t offset)
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{
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struct fio *fio = (struct fio *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
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ssize_t nread;
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ssize_t to_return;
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/*
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* OS X has a off-by-1 error in the offset calculation, so we're
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* bug compatible here. It won't hurt, as any relevant real
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* world read requests from the AFP_AfpInfo stream will be
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* offset=0 n=60. offset is ignored anyway, see below.
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*/
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if ((offset < 0) || (offset >= AFP_INFO_SIZE + 1)) {
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return 0;
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}
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/* Yes, macOS always reads from offset 0 */
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offset = 0;
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to_return = MIN(n, AFP_INFO_SIZE);
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switch (fio->config->meta) {
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case FRUIT_META_STREAM:
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nread = fruit_pread_meta_stream(handle, fsp, data,
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to_return, offset);
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break;
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case FRUIT_META_NETATALK:
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nread = fruit_pread_meta_adouble(handle, fsp, data,
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to_return, offset);
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break;
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default:
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DBG_ERR("Unexpected meta config [%d]\n", fio->config->meta);
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return -1;
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}
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return nread;
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}
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static ssize_t fruit_pread_rsrc_stream(vfs_handle_struct *handle,
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files_struct *fsp, void *data,
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size_t n, off_t offset)
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{
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return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
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}
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static ssize_t fruit_pread_rsrc_xattr(vfs_handle_struct *handle,
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files_struct *fsp, void *data,
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size_t n, off_t offset)
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{
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return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
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}
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static ssize_t fruit_pread_rsrc_adouble(vfs_handle_struct *handle,
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files_struct *fsp, void *data,
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size_t n, off_t offset)
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{
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struct adouble *ad = NULL;
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ssize_t nread;
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ad = ad_fget(talloc_tos(), handle, fsp, ADOUBLE_RSRC);
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if (ad == NULL) {
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return -1;
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}
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nread = SMB_VFS_NEXT_PREAD(handle, fsp, data, n,
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offset + ad_getentryoff(ad, ADEID_RFORK));
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TALLOC_FREE(ad);
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return nread;
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}
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static ssize_t fruit_pread_rsrc(vfs_handle_struct *handle,
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files_struct *fsp, void *data,
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size_t n, off_t offset)
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{
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struct fio *fio = (struct fio *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
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ssize_t nread;
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switch (fio->config->rsrc) {
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case FRUIT_RSRC_STREAM:
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nread = fruit_pread_rsrc_stream(handle, fsp, data, n, offset);
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break;
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case FRUIT_RSRC_ADFILE:
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nread = fruit_pread_rsrc_adouble(handle, fsp, data, n, offset);
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break;
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case FRUIT_RSRC_XATTR:
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nread = fruit_pread_rsrc_xattr(handle, fsp, data, n, offset);
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break;
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default:
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DBG_ERR("Unexpected rsrc config [%d]\n", fio->config->rsrc);
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return -1;
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}
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return nread;
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}
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static ssize_t fruit_pread(vfs_handle_struct *handle,
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files_struct *fsp, void *data,
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size_t n, off_t offset)
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{
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int rc = 0;
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struct adouble *ad = (struct adouble *)VFS_FETCH_FSP_EXTENSION(
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handle, fsp);
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struct fruit_config_data *config = NULL;
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AfpInfo *ai = NULL;
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ssize_t len = -1;
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size_t to_return = n;
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struct fio *fio = (struct fio *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
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ssize_t nread;
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DEBUG(10, ("fruit_pread: offset=%d, size=%d\n", (int)offset, (int)n));
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DBG_DEBUG("Path [%s] offset=%zd, size=%zd\n",
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fsp_str_dbg(fsp), offset, n);
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if (!fsp->base_fsp) {
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if (fio == NULL) {
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return SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
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}
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SMB_VFS_HANDLE_GET_DATA(handle, config,
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struct fruit_config_data, return -1);
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if (is_afpinfo_stream(fsp->fsp_name)) {
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/*
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* OS X has a off-by-1 error in the offset calculation, so we're
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* bug compatible here. It won't hurt, as any relevant real
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* world read requests from the AFP_AfpInfo stream will be
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* offset=0 n=60. offset is ignored anyway, see below.
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*/
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if ((offset < 0) || (offset >= AFP_INFO_SIZE + 1)) {
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len = 0;
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rc = 0;
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goto exit;
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}
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to_return = MIN(n, AFP_INFO_SIZE);
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/* Yes, macOS always reads from offset 0 */
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offset = 0;
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}
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if (ad == NULL) {
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len = SMB_VFS_NEXT_PREAD(handle, fsp, data, to_return, offset);
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if (len == -1) {
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rc = -1;
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goto exit;
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}
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goto exit;
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}
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if (ad->ad_type == ADOUBLE_META) {
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char afpinfo_buf[AFP_INFO_SIZE];
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char *p = NULL;
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ai = afpinfo_new(talloc_tos());
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if (ai == NULL) {
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rc = -1;
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goto exit;
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}
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len = ad_read(ad, fsp->base_fsp->fsp_name->base_name);
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if (len == -1) {
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rc = -1;
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goto exit;
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}
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p = ad_get_entry(ad, ADEID_FINDERI);
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if (p == NULL) {
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DBG_ERR("No ADEID_FINDERI for [%s]\n",
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fsp->fsp_name->base_name);
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rc = -1;
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goto exit;
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}
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memcpy(&ai->afpi_FinderInfo[0], p, ADEDLEN_FINDERI);
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len = afpinfo_pack(ai, afpinfo_buf);
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if (len != AFP_INFO_SIZE) {
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rc = -1;
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goto exit;
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}
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/*
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* OS X ignores offset when reading from AFP_AfpInfo stream!
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*/
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memcpy(data, afpinfo_buf, to_return);
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len = to_return;
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if (fio->type == ADOUBLE_META) {
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nread = fruit_pread_meta(handle, fsp, data, n, offset);
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} else {
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len = SMB_VFS_NEXT_PREAD(
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handle, fsp, data, n,
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offset + ad_getentryoff(ad, ADEID_RFORK));
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if (len == -1) {
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rc = -1;
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goto exit;
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nread = fruit_pread_rsrc(handle, fsp, data, n, offset);
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}
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DBG_DEBUG("Path [%s] nread [%zd]\n", fsp_str_dbg(fsp), nread);
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return nread;
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}
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static ssize_t fruit_pwrite_meta_stream(vfs_handle_struct *handle,
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files_struct *fsp, const void *data,
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size_t n, off_t offset)
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{
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AfpInfo *ai = NULL;
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int ret;
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ai = afpinfo_unpack(talloc_tos(), data);
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if (ai == NULL) {
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return -1;
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}
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if (ai_empty_finderinfo(ai)) {
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ret = SMB_VFS_NEXT_UNLINK(handle, fsp->fsp_name);
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if (ret != 0 && errno != ENOENT && errno != ENOATTR) {
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DBG_ERR("Can't delete metadata for %s: %s\n",
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fsp_str_dbg(fsp), strerror(errno));
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TALLOC_FREE(ai);
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return -1;
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}
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return n;
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}
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return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
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}
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static ssize_t fruit_pwrite_meta_netatalk(vfs_handle_struct *handle,
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files_struct *fsp, const void *data,
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size_t n, off_t offset)
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{
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struct adouble *ad = NULL;
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AfpInfo *ai = NULL;
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char *p = NULL;
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int ret;
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ai = afpinfo_unpack(talloc_tos(), data);
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if (ai == NULL) {
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return -1;
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}
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if (ai_empty_finderinfo(ai)) {
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ret = SMB_VFS_REMOVEXATTR(handle->conn,
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fsp->fsp_name->base_name,
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AFPINFO_EA_NETATALK);
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if (ret != 0 && errno != ENOENT && errno != ENOATTR) {
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DBG_ERR("Can't delete metadata for %s: %s\n",
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fsp_str_dbg(fsp), strerror(errno));
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return -1;
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}
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return n;
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}
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ad = ad_fget(talloc_tos(), handle, fsp, ADOUBLE_META);
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if (ad == NULL) {
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ad = ad_init(talloc_tos(), handle, ADOUBLE_META);
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if (ad == NULL) {
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return -1;
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}
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}
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exit:
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TALLOC_FREE(ai);
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if (rc != 0) {
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len = -1;
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p = ad_get_entry(ad, ADEID_FINDERI);
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if (p == NULL) {
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DBG_ERR("No ADEID_FINDERI for [%s]\n", fsp_str_dbg(fsp));
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TALLOC_FREE(ad);
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return -1;
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}
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DEBUG(10, ("fruit_pread: rc=%d, len=%zd\n", rc, len));
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return len;
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memcpy(p, &ai->afpi_FinderInfo[0], ADEDLEN_FINDERI);
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ret = ad_fset(ad, fsp);
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if (ret != 0) {
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DBG_ERR("ad_pwrite [%s] failed\n", fsp_str_dbg(fsp));
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TALLOC_FREE(ad);
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return -1;
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}
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TALLOC_FREE(ad);
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return n;
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}
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static ssize_t fruit_pwrite_meta(vfs_handle_struct *handle,
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files_struct *fsp, const void *data,
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size_t n, off_t offset)
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{
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struct fio *fio = (struct fio *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
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ssize_t nwritten;
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/*
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* Writing an all 0 blob to the metadata stream
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* results in the stream being removed on a macOS
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* server. This ensures we behave the same and it
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* verified by the "delete AFP_AfpInfo by writing all
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* 0" test.
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*/
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if (n != AFP_INFO_SIZE || offset != 0) {
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DBG_ERR("unexpected offset=%jd or size=%jd\n",
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(intmax_t)offset, (intmax_t)n);
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return -1;
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}
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switch (fio->config->meta) {
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case FRUIT_META_STREAM:
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nwritten = fruit_pwrite_meta_stream(handle, fsp, data,
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n, offset);
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break;
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case FRUIT_META_NETATALK:
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nwritten = fruit_pwrite_meta_netatalk(handle, fsp, data,
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n, offset);
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break;
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default:
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DBG_ERR("Unexpected meta config [%d]\n", fio->config->meta);
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return -1;
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}
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return nwritten;
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}
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static ssize_t fruit_pwrite_rsrc_stream(vfs_handle_struct *handle,
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files_struct *fsp, const void *data,
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size_t n, off_t offset)
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{
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return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
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}
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static ssize_t fruit_pwrite_rsrc_xattr(vfs_handle_struct *handle,
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files_struct *fsp, const void *data,
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size_t n, off_t offset)
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{
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return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
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}
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static ssize_t fruit_pwrite_rsrc_adouble(vfs_handle_struct *handle,
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files_struct *fsp, const void *data,
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size_t n, off_t offset)
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{
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struct adouble *ad = NULL;
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ssize_t nwritten;
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int ret;
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ad = ad_fget(talloc_tos(), handle, fsp, ADOUBLE_RSRC);
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if (ad == NULL) {
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DBG_ERR("ad_get [%s] failed\n", fsp_str_dbg(fsp));
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return -1;
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}
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nwritten = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n,
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offset + ad_getentryoff(ad, ADEID_RFORK));
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if (nwritten != n) {
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DBG_ERR("Short write on [%s] [%zd/%zd]\n",
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fsp_str_dbg(fsp), nwritten, n);
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TALLOC_FREE(ad);
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return -1;
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}
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if ((n + offset) > ad_getentrylen(ad, ADEID_RFORK)) {
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ad_setentrylen(ad, ADEID_RFORK, n + offset);
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ret = ad_fset(ad, fsp);
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if (ret != 0) {
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DBG_ERR("ad_pwrite [%s] failed\n", fsp_str_dbg(fsp));
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TALLOC_FREE(ad);
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return -1;
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}
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}
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TALLOC_FREE(ad);
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return n;
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}
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static ssize_t fruit_pwrite_rsrc(vfs_handle_struct *handle,
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files_struct *fsp, const void *data,
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size_t n, off_t offset)
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{
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struct fio *fio = (struct fio *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
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ssize_t nwritten;
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switch (fio->config->rsrc) {
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case FRUIT_RSRC_STREAM:
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nwritten = fruit_pwrite_rsrc_stream(handle, fsp, data, n, offset);
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break;
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case FRUIT_RSRC_ADFILE:
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nwritten = fruit_pwrite_rsrc_adouble(handle, fsp, data, n, offset);
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break;
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case FRUIT_RSRC_XATTR:
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nwritten = fruit_pwrite_rsrc_xattr(handle, fsp, data, n, offset);
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break;
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default:
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DBG_ERR("Unexpected rsrc config [%d]\n", fio->config->rsrc);
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return -1;
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}
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return nwritten;
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}
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static ssize_t fruit_pwrite(vfs_handle_struct *handle,
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files_struct *fsp, const void *data,
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size_t n, off_t offset)
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{
|
||||
int rc = 0;
|
||||
struct adouble *ad = (struct adouble *)VFS_FETCH_FSP_EXTENSION(
|
||||
handle, fsp);
|
||||
struct fruit_config_data *config = NULL;
|
||||
AfpInfo *ai = NULL;
|
||||
ssize_t len;
|
||||
struct fio *fio = (struct fio *)VFS_FETCH_FSP_EXTENSION(handle, fsp);
|
||||
ssize_t nwritten;
|
||||
|
||||
DEBUG(10, ("fruit_pwrite: offset=%d, size=%d\n", (int)offset, (int)n));
|
||||
DBG_DEBUG("Path [%s] offset=%zd, size=%zd\n",
|
||||
fsp_str_dbg(fsp), offset, n);
|
||||
|
||||
if (!fsp->base_fsp) {
|
||||
if (fio == NULL) {
|
||||
return SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
|
||||
}
|
||||
|
||||
SMB_VFS_HANDLE_GET_DATA(handle, config,
|
||||
struct fruit_config_data, return -1);
|
||||
|
||||
if (is_afpinfo_stream(fsp->fsp_name)) {
|
||||
/*
|
||||
* Writing an all 0 blob to the metadata stream
|
||||
* results in the stream being removed on a macOS
|
||||
* server. This ensures we behave the same and it
|
||||
* verified by the "delete AFP_AfpInfo by writing all
|
||||
* 0" test.
|
||||
*/
|
||||
if (n != AFP_INFO_SIZE || offset != 0) {
|
||||
DEBUG(1, ("unexpected offset=%jd or size=%jd\n",
|
||||
(intmax_t)offset, (intmax_t)n));
|
||||
rc = -1;
|
||||
goto exit;
|
||||
}
|
||||
ai = afpinfo_unpack(talloc_tos(), data);
|
||||
if (ai == NULL) {
|
||||
rc = -1;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (ai_empty_finderinfo(ai)) {
|
||||
switch (config->meta) {
|
||||
case FRUIT_META_STREAM:
|
||||
rc = SMB_VFS_UNLINK(handle->conn, fsp->fsp_name);
|
||||
break;
|
||||
|
||||
case FRUIT_META_NETATALK:
|
||||
rc = SMB_VFS_REMOVEXATTR(
|
||||
handle->conn,
|
||||
fsp->fsp_name->base_name,
|
||||
AFPINFO_EA_NETATALK);
|
||||
break;
|
||||
|
||||
default:
|
||||
DBG_ERR("Unexpected meta config [%d]\n",
|
||||
config->meta);
|
||||
rc = -1;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (rc != 0 && errno != ENOENT && errno != ENOATTR) {
|
||||
DBG_WARNING("Can't delete metadata for %s: %s\n",
|
||||
fsp->fsp_name->base_name, strerror(errno));
|
||||
goto exit;
|
||||
}
|
||||
|
||||
rc = 0;
|
||||
goto exit;
|
||||
}
|
||||
}
|
||||
|
||||
if (ad == NULL) {
|
||||
len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
|
||||
if (len != n) {
|
||||
rc = -1;
|
||||
goto exit;
|
||||
}
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (ad->ad_type == ADOUBLE_META) {
|
||||
char *p = NULL;
|
||||
|
||||
p = ad_get_entry(ad, ADEID_FINDERI);
|
||||
if (p == NULL) {
|
||||
DBG_ERR("No ADEID_FINDERI for [%s]\n",
|
||||
fsp->fsp_name->base_name);
|
||||
rc = -1;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
memcpy(p, &ai->afpi_FinderInfo[0], ADEDLEN_FINDERI);
|
||||
rc = ad_fset(ad, fsp);
|
||||
if (fio->type == ADOUBLE_META) {
|
||||
nwritten = fruit_pwrite_meta(handle, fsp, data, n, offset);
|
||||
} else {
|
||||
len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n,
|
||||
offset + ad_getentryoff(ad, ADEID_RFORK));
|
||||
if (len != n) {
|
||||
rc = -1;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
if (config->rsrc == FRUIT_RSRC_ADFILE) {
|
||||
rc = ad_read(ad, fsp->base_fsp->fsp_name->base_name);
|
||||
if (rc == -1) {
|
||||
goto exit;
|
||||
}
|
||||
rc = 0;
|
||||
|
||||
if ((len + offset) > ad_getentrylen(ad, ADEID_RFORK)) {
|
||||
ad_setentrylen(ad, ADEID_RFORK, len + offset);
|
||||
rc = ad_fset(ad, fsp);
|
||||
}
|
||||
}
|
||||
nwritten = fruit_pwrite_rsrc(handle, fsp, data, n, offset);
|
||||
}
|
||||
|
||||
exit:
|
||||
TALLOC_FREE(ai);
|
||||
if (rc != 0) {
|
||||
return -1;
|
||||
}
|
||||
return n;
|
||||
DBG_DEBUG("Path [%s] nwritten=%zd\n", fsp_str_dbg(fsp), nwritten);
|
||||
return nwritten;
|
||||
}
|
||||
|
||||
/**
|
||||
|
||||
Loading…
Reference in New Issue
Block a user