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- /*
- * fs/cifs/smb2inode.c
- *
- * Copyright (C) International Business Machines Corp., 2002, 2011
- * Etersoft, 2012
- * Author(s): Pavel Shilovsky (pshilovsky@samba.org),
- * Steve French (sfrench@us.ibm.com)
- *
- * This library is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published
- * by the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
- #include <linux/fs.h>
- #include <linux/stat.h>
- #include <linux/slab.h>
- #include <linux/pagemap.h>
- #include <asm/div64.h>
- #include "cifsfs.h"
- #include "cifspdu.h"
- #include "cifsglob.h"
- #include "cifsproto.h"
- #include "cifs_debug.h"
- #include "cifs_fs_sb.h"
- #include "cifs_unicode.h"
- #include "fscache.h"
- #include "smb2glob.h"
- #include "smb2pdu.h"
- #include "smb2proto.h"
- static void
- free_set_inf_compound(struct smb_rqst *rqst)
- {
- if (rqst[1].rq_iov)
- SMB2_set_info_free(&rqst[1]);
- if (rqst[2].rq_iov)
- SMB2_close_free(&rqst[2]);
- }
- struct cop_vars {
- struct cifs_open_parms oparms;
- struct kvec rsp_iov[3];
- struct smb_rqst rqst[3];
- struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
- struct kvec qi_iov[1];
- struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
- struct kvec close_iov[1];
- struct smb2_file_rename_info rename_info;
- struct smb2_file_link_info link_info;
- };
- static int
- smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
- struct cifs_sb_info *cifs_sb, const char *full_path,
- __u32 desired_access, __u32 create_disposition,
- __u32 create_options, umode_t mode, void *ptr, int command,
- struct cifsFileInfo *cfile)
- {
- struct cop_vars *vars = NULL;
- struct kvec *rsp_iov;
- struct smb_rqst *rqst;
- int rc;
- __le16 *utf16_path = NULL;
- __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
- struct cifs_fid fid;
- struct cifs_ses *ses = tcon->ses;
- struct TCP_Server_Info *server;
- int num_rqst = 0;
- int resp_buftype[3];
- struct smb2_query_info_rsp *qi_rsp = NULL;
- int flags = 0;
- __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
- unsigned int size[2];
- void *data[2];
- int len;
- vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
- if (vars == NULL)
- return -ENOMEM;
- rqst = &vars->rqst[0];
- rsp_iov = &vars->rsp_iov[0];
- server = cifs_pick_channel(ses);
- if (smb3_encryption_required(tcon))
- flags |= CIFS_TRANSFORM_REQ;
- resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
- /* We already have a handle so we can skip the open */
- if (cfile)
- goto after_open;
- /* Open */
- utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
- if (!utf16_path) {
- rc = -ENOMEM;
- goto finished;
- }
- vars->oparms.tcon = tcon;
- vars->oparms.desired_access = desired_access;
- vars->oparms.disposition = create_disposition;
- vars->oparms.create_options = cifs_create_options(cifs_sb, create_options);
- vars->oparms.fid = &fid;
- vars->oparms.reconnect = false;
- vars->oparms.mode = mode;
- vars->oparms.cifs_sb = cifs_sb;
- rqst[num_rqst].rq_iov = &vars->open_iov[0];
- rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
- rc = SMB2_open_init(tcon, server,
- &rqst[num_rqst], &oplock, &vars->oparms,
- utf16_path);
- kfree(utf16_path);
- if (rc)
- goto finished;
- smb2_set_next_command(tcon, &rqst[num_rqst]);
- after_open:
- num_rqst++;
- rc = 0;
- /* Operation */
- switch (command) {
- case SMB2_OP_QUERY_INFO:
- rqst[num_rqst].rq_iov = &vars->qi_iov[0];
- rqst[num_rqst].rq_nvec = 1;
- if (cfile)
- rc = SMB2_query_info_init(tcon, server,
- &rqst[num_rqst],
- cfile->fid.persistent_fid,
- cfile->fid.volatile_fid,
- FILE_ALL_INFORMATION,
- SMB2_O_INFO_FILE, 0,
- sizeof(struct smb2_file_all_info) +
- PATH_MAX * 2, 0, NULL);
- else {
- rc = SMB2_query_info_init(tcon, server,
- &rqst[num_rqst],
- COMPOUND_FID,
- COMPOUND_FID,
- FILE_ALL_INFORMATION,
- SMB2_O_INFO_FILE, 0,
- sizeof(struct smb2_file_all_info) +
- PATH_MAX * 2, 0, NULL);
- if (!rc) {
- smb2_set_next_command(tcon, &rqst[num_rqst]);
- smb2_set_related(&rqst[num_rqst]);
- }
- }
- if (rc)
- goto finished;
- num_rqst++;
- trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
- full_path);
- break;
- case SMB2_OP_POSIX_QUERY_INFO:
- rqst[num_rqst].rq_iov = &vars->qi_iov[0];
- rqst[num_rqst].rq_nvec = 1;
- if (cfile)
- rc = SMB2_query_info_init(tcon, server,
- &rqst[num_rqst],
- cfile->fid.persistent_fid,
- cfile->fid.volatile_fid,
- SMB_FIND_FILE_POSIX_INFO,
- SMB2_O_INFO_FILE, 0,
- /* TBD: fix following to allow for longer SIDs */
- sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
- (sizeof(struct cifs_sid) * 2), 0, NULL);
- else {
- rc = SMB2_query_info_init(tcon, server,
- &rqst[num_rqst],
- COMPOUND_FID,
- COMPOUND_FID,
- SMB_FIND_FILE_POSIX_INFO,
- SMB2_O_INFO_FILE, 0,
- sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
- (sizeof(struct cifs_sid) * 2), 0, NULL);
- if (!rc) {
- smb2_set_next_command(tcon, &rqst[num_rqst]);
- smb2_set_related(&rqst[num_rqst]);
- }
- }
- if (rc)
- goto finished;
- num_rqst++;
- trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
- break;
- case SMB2_OP_DELETE:
- trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
- break;
- case SMB2_OP_MKDIR:
- /*
- * Directories are created through parameters in the
- * SMB2_open() call.
- */
- trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
- break;
- case SMB2_OP_RMDIR:
- rqst[num_rqst].rq_iov = &vars->si_iov[0];
- rqst[num_rqst].rq_nvec = 1;
- size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
- data[0] = &delete_pending[0];
- rc = SMB2_set_info_init(tcon, server,
- &rqst[num_rqst], COMPOUND_FID,
- COMPOUND_FID, current->tgid,
- FILE_DISPOSITION_INFORMATION,
- SMB2_O_INFO_FILE, 0, data, size);
- if (rc)
- goto finished;
- smb2_set_next_command(tcon, &rqst[num_rqst]);
- smb2_set_related(&rqst[num_rqst++]);
- trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
- break;
- case SMB2_OP_SET_EOF:
- rqst[num_rqst].rq_iov = &vars->si_iov[0];
- rqst[num_rqst].rq_nvec = 1;
- size[0] = 8; /* sizeof __le64 */
- data[0] = ptr;
- rc = SMB2_set_info_init(tcon, server,
- &rqst[num_rqst], COMPOUND_FID,
- COMPOUND_FID, current->tgid,
- FILE_END_OF_FILE_INFORMATION,
- SMB2_O_INFO_FILE, 0, data, size);
- if (rc)
- goto finished;
- smb2_set_next_command(tcon, &rqst[num_rqst]);
- smb2_set_related(&rqst[num_rqst++]);
- trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
- break;
- case SMB2_OP_SET_INFO:
- rqst[num_rqst].rq_iov = &vars->si_iov[0];
- rqst[num_rqst].rq_nvec = 1;
- size[0] = sizeof(FILE_BASIC_INFO);
- data[0] = ptr;
- if (cfile)
- rc = SMB2_set_info_init(tcon, server,
- &rqst[num_rqst],
- cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, current->tgid,
- FILE_BASIC_INFORMATION,
- SMB2_O_INFO_FILE, 0, data, size);
- else {
- rc = SMB2_set_info_init(tcon, server,
- &rqst[num_rqst],
- COMPOUND_FID,
- COMPOUND_FID, current->tgid,
- FILE_BASIC_INFORMATION,
- SMB2_O_INFO_FILE, 0, data, size);
- if (!rc) {
- smb2_set_next_command(tcon, &rqst[num_rqst]);
- smb2_set_related(&rqst[num_rqst]);
- }
- }
- if (rc)
- goto finished;
- num_rqst++;
- trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
- full_path);
- break;
- case SMB2_OP_RENAME:
- rqst[num_rqst].rq_iov = &vars->si_iov[0];
- rqst[num_rqst].rq_nvec = 2;
- len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
- vars->rename_info.ReplaceIfExists = 1;
- vars->rename_info.RootDirectory = 0;
- vars->rename_info.FileNameLength = cpu_to_le32(len);
- size[0] = sizeof(struct smb2_file_rename_info);
- data[0] = &vars->rename_info;
- size[1] = len + 2 /* null */;
- data[1] = (__le16 *)ptr;
- if (cfile)
- rc = SMB2_set_info_init(tcon, server,
- &rqst[num_rqst],
- cfile->fid.persistent_fid,
- cfile->fid.volatile_fid,
- current->tgid, FILE_RENAME_INFORMATION,
- SMB2_O_INFO_FILE, 0, data, size);
- else {
- rc = SMB2_set_info_init(tcon, server,
- &rqst[num_rqst],
- COMPOUND_FID, COMPOUND_FID,
- current->tgid, FILE_RENAME_INFORMATION,
- SMB2_O_INFO_FILE, 0, data, size);
- if (!rc) {
- smb2_set_next_command(tcon, &rqst[num_rqst]);
- smb2_set_related(&rqst[num_rqst]);
- }
- }
- if (rc)
- goto finished;
- num_rqst++;
- trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
- break;
- case SMB2_OP_HARDLINK:
- rqst[num_rqst].rq_iov = &vars->si_iov[0];
- rqst[num_rqst].rq_nvec = 2;
- len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
- vars->link_info.ReplaceIfExists = 0;
- vars->link_info.RootDirectory = 0;
- vars->link_info.FileNameLength = cpu_to_le32(len);
- size[0] = sizeof(struct smb2_file_link_info);
- data[0] = &vars->link_info;
- size[1] = len + 2 /* null */;
- data[1] = (__le16 *)ptr;
- rc = SMB2_set_info_init(tcon, server,
- &rqst[num_rqst], COMPOUND_FID,
- COMPOUND_FID, current->tgid,
- FILE_LINK_INFORMATION,
- SMB2_O_INFO_FILE, 0, data, size);
- if (rc)
- goto finished;
- smb2_set_next_command(tcon, &rqst[num_rqst]);
- smb2_set_related(&rqst[num_rqst++]);
- trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
- break;
- default:
- cifs_dbg(VFS, "Invalid command\n");
- rc = -EINVAL;
- }
- if (rc)
- goto finished;
- /* We already have a handle so we can skip the close */
- if (cfile)
- goto after_close;
- /* Close */
- flags |= CIFS_CP_CREATE_CLOSE_OP;
- rqst[num_rqst].rq_iov = &vars->close_iov[0];
- rqst[num_rqst].rq_nvec = 1;
- rc = SMB2_close_init(tcon, server,
- &rqst[num_rqst], COMPOUND_FID,
- COMPOUND_FID, false);
- smb2_set_related(&rqst[num_rqst]);
- if (rc)
- goto finished;
- after_close:
- num_rqst++;
- if (cfile) {
- cifsFileInfo_put(cfile);
- cfile = NULL;
- rc = compound_send_recv(xid, ses, server,
- flags, num_rqst - 2,
- &rqst[1], &resp_buftype[1],
- &rsp_iov[1]);
- } else
- rc = compound_send_recv(xid, ses, server,
- flags, num_rqst,
- rqst, resp_buftype,
- rsp_iov);
- finished:
- if (cfile)
- cifsFileInfo_put(cfile);
- SMB2_open_free(&rqst[0]);
- if (rc == -EREMCHG) {
- pr_warn_once("server share %s deleted\n", tcon->treeName);
- tcon->need_reconnect = true;
- }
- switch (command) {
- case SMB2_OP_QUERY_INFO:
- if (rc == 0) {
- qi_rsp = (struct smb2_query_info_rsp *)
- rsp_iov[1].iov_base;
- rc = smb2_validate_and_copy_iov(
- le16_to_cpu(qi_rsp->OutputBufferOffset),
- le32_to_cpu(qi_rsp->OutputBufferLength),
- &rsp_iov[1], sizeof(struct smb2_file_all_info),
- ptr);
- }
- if (rqst[1].rq_iov)
- SMB2_query_info_free(&rqst[1]);
- if (rqst[2].rq_iov)
- SMB2_close_free(&rqst[2]);
- if (rc)
- trace_smb3_query_info_compound_err(xid, ses->Suid,
- tcon->tid, rc);
- else
- trace_smb3_query_info_compound_done(xid, ses->Suid,
- tcon->tid);
- break;
- case SMB2_OP_POSIX_QUERY_INFO:
- if (rc == 0) {
- qi_rsp = (struct smb2_query_info_rsp *)
- rsp_iov[1].iov_base;
- rc = smb2_validate_and_copy_iov(
- le16_to_cpu(qi_rsp->OutputBufferOffset),
- le32_to_cpu(qi_rsp->OutputBufferLength),
- &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
- }
- if (rqst[1].rq_iov)
- SMB2_query_info_free(&rqst[1]);
- if (rqst[2].rq_iov)
- SMB2_close_free(&rqst[2]);
- if (rc)
- trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc);
- else
- trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
- break;
- case SMB2_OP_DELETE:
- if (rc)
- trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
- else
- trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
- if (rqst[1].rq_iov)
- SMB2_close_free(&rqst[1]);
- break;
- case SMB2_OP_MKDIR:
- if (rc)
- trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc);
- else
- trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
- if (rqst[1].rq_iov)
- SMB2_close_free(&rqst[1]);
- break;
- case SMB2_OP_HARDLINK:
- if (rc)
- trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc);
- else
- trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
- free_set_inf_compound(rqst);
- break;
- case SMB2_OP_RENAME:
- if (rc)
- trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc);
- else
- trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
- free_set_inf_compound(rqst);
- break;
- case SMB2_OP_RMDIR:
- if (rc)
- trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc);
- else
- trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
- free_set_inf_compound(rqst);
- break;
- case SMB2_OP_SET_EOF:
- if (rc)
- trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc);
- else
- trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
- free_set_inf_compound(rqst);
- break;
- case SMB2_OP_SET_INFO:
- if (rc)
- trace_smb3_set_info_compound_err(xid, ses->Suid,
- tcon->tid, rc);
- else
- trace_smb3_set_info_compound_done(xid, ses->Suid,
- tcon->tid);
- free_set_inf_compound(rqst);
- break;
- }
- free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
- free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
- free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
- kfree(vars);
- return rc;
- }
- void
- move_smb2_info_to_cifs(FILE_ALL_INFO *dst, struct smb2_file_all_info *src)
- {
- memcpy(dst, src, (size_t)(&src->CurrentByteOffset) - (size_t)src);
- dst->CurrentByteOffset = src->CurrentByteOffset;
- dst->Mode = src->Mode;
- dst->AlignmentRequirement = src->AlignmentRequirement;
- dst->IndexNumber1 = 0; /* we don't use it */
- }
- int
- smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
- struct cifs_sb_info *cifs_sb, const char *full_path,
- FILE_ALL_INFO *data, bool *adjust_tz, bool *reparse)
- {
- int rc;
- struct smb2_file_all_info *smb2_data;
- __u32 create_options = 0;
- bool no_cached_open = tcon->nohandlecache;
- struct cifsFileInfo *cfile;
- struct cached_fid *cfid = NULL;
- *adjust_tz = false;
- *reparse = false;
- smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
- GFP_KERNEL);
- if (smb2_data == NULL)
- return -ENOMEM;
- /* If it is a root and its handle is cached then use it */
- if (!strlen(full_path) && !no_cached_open) {
- rc = open_shroot(xid, tcon, cifs_sb, &cfid);
- if (rc)
- goto out;
- if (tcon->crfid.file_all_info_is_valid) {
- move_smb2_info_to_cifs(data,
- &tcon->crfid.file_all_info);
- } else {
- rc = SMB2_query_info(xid, tcon,
- cfid->fid->persistent_fid,
- cfid->fid->volatile_fid, smb2_data);
- if (!rc)
- move_smb2_info_to_cifs(data, smb2_data);
- }
- close_shroot(cfid);
- goto out;
- }
- cifs_get_readable_path(tcon, full_path, &cfile);
- rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
- FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
- ACL_NO_MODE, smb2_data, SMB2_OP_QUERY_INFO, cfile);
- if (rc == -EOPNOTSUPP) {
- *reparse = true;
- create_options |= OPEN_REPARSE_POINT;
- /* Failed on a symbolic link - query a reparse point info */
- rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
- FILE_READ_ATTRIBUTES, FILE_OPEN,
- create_options, ACL_NO_MODE,
- smb2_data, SMB2_OP_QUERY_INFO, NULL);
- }
- if (rc)
- goto out;
- move_smb2_info_to_cifs(data, smb2_data);
- out:
- kfree(smb2_data);
- return rc;
- }
- int
- smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
- struct cifs_sb_info *cifs_sb, const char *full_path,
- struct smb311_posix_qinfo *data, bool *adjust_tz, bool *reparse)
- {
- int rc;
- __u32 create_options = 0;
- struct cifsFileInfo *cfile;
- struct smb311_posix_qinfo *smb2_data;
- *adjust_tz = false;
- *reparse = false;
- /* BB TODO: Make struct larger when add support for parsing owner SIDs */
- smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
- GFP_KERNEL);
- if (smb2_data == NULL)
- return -ENOMEM;
- /*
- * BB TODO: Add support for using the cached root handle.
- * Create SMB2_query_posix_info worker function to do non-compounded query
- * when we already have an open file handle for this. For now this is fast enough
- * (always using the compounded version).
- */
- cifs_get_readable_path(tcon, full_path, &cfile);
- rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
- FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
- ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
- if (rc == -EOPNOTSUPP) {
- /* BB TODO: When support for special files added to Samba re-verify this path */
- *reparse = true;
- create_options |= OPEN_REPARSE_POINT;
- /* Failed on a symbolic link - query a reparse point info */
- rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
- FILE_READ_ATTRIBUTES, FILE_OPEN,
- create_options, ACL_NO_MODE,
- smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL);
- }
- if (rc)
- goto out;
- /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
- memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
- out:
- kfree(smb2_data);
- return rc;
- }
- int
- smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
- struct cifs_tcon *tcon, const char *name,
- struct cifs_sb_info *cifs_sb)
- {
- return smb2_compound_op(xid, tcon, cifs_sb, name,
- FILE_WRITE_ATTRIBUTES, FILE_CREATE,
- CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
- NULL);
- }
- void
- smb2_mkdir_setinfo(struct inode *inode, const char *name,
- struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
- const unsigned int xid)
- {
- FILE_BASIC_INFO data;
- struct cifsInodeInfo *cifs_i;
- struct cifsFileInfo *cfile;
- u32 dosattrs;
- int tmprc;
- memset(&data, 0, sizeof(data));
- cifs_i = CIFS_I(inode);
- dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
- data.Attributes = cpu_to_le32(dosattrs);
- cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
- tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
- FILE_WRITE_ATTRIBUTES, FILE_CREATE,
- CREATE_NOT_FILE, ACL_NO_MODE,
- &data, SMB2_OP_SET_INFO, cfile);
- if (tmprc == 0)
- cifs_i->cifsAttrs = dosattrs;
- }
- int
- smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
- struct cifs_sb_info *cifs_sb)
- {
- return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
- CREATE_NOT_FILE, ACL_NO_MODE,
- NULL, SMB2_OP_RMDIR, NULL);
- }
- int
- smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
- struct cifs_sb_info *cifs_sb)
- {
- return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
- CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
- ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL);
- }
- static int
- smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
- const char *from_name, const char *to_name,
- struct cifs_sb_info *cifs_sb, __u32 access, int command,
- struct cifsFileInfo *cfile)
- {
- __le16 *smb2_to_name = NULL;
- int rc;
- smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
- if (smb2_to_name == NULL) {
- rc = -ENOMEM;
- goto smb2_rename_path;
- }
- rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
- FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
- command, cfile);
- smb2_rename_path:
- kfree(smb2_to_name);
- return rc;
- }
- int
- smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
- const char *from_name, const char *to_name,
- struct cifs_sb_info *cifs_sb)
- {
- struct cifsFileInfo *cfile;
- cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
- return smb2_set_path_attr(xid, tcon, from_name, to_name,
- cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
- }
- int
- smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
- const char *from_name, const char *to_name,
- struct cifs_sb_info *cifs_sb)
- {
- return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
- FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
- NULL);
- }
- int
- smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
- const char *full_path, __u64 size,
- struct cifs_sb_info *cifs_sb, bool set_alloc)
- {
- __le64 eof = cpu_to_le64(size);
- return smb2_compound_op(xid, tcon, cifs_sb, full_path,
- FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
- &eof, SMB2_OP_SET_EOF, NULL);
- }
- int
- smb2_set_file_info(struct inode *inode, const char *full_path,
- FILE_BASIC_INFO *buf, const unsigned int xid)
- {
- struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
- struct tcon_link *tlink;
- int rc;
- if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
- (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
- (buf->Attributes == 0))
- return 0; /* would be a no op, no sense sending this */
- tlink = cifs_sb_tlink(cifs_sb);
- if (IS_ERR(tlink))
- return PTR_ERR(tlink);
- rc = smb2_compound_op(xid, tlink_tcon(tlink), cifs_sb, full_path,
- FILE_WRITE_ATTRIBUTES, FILE_OPEN,
- 0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, NULL);
- cifs_put_tlink(tlink);
- return rc;
- }
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