diff options
Diffstat (limited to 'fs/smb/client/smb2inode.c')
-rw-r--r-- | fs/smb/client/smb2inode.c | 715 |
1 files changed, 514 insertions, 201 deletions
diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c index 05818cd6d932..826b57a5a2a8 100644 --- a/fs/smb/client/smb2inode.c +++ b/fs/smb/client/smb2inode.c @@ -24,7 +24,7 @@ #include "smb2pdu.h" #include "smb2proto.h" #include "cached_dir.h" -#include "smb2status.h" +#include "../common/smb2status.h" static struct reparse_data_buffer *reparse_buf_ptr(struct kvec *iov) { @@ -85,6 +85,82 @@ static int parse_posix_sids(struct cifs_open_info_data *data, return 0; } +struct wsl_query_ea { + __le32 next; + __u8 name_len; + __u8 name[SMB2_WSL_XATTR_NAME_LEN + 1]; +} __packed; + +#define NEXT_OFF cpu_to_le32(sizeof(struct wsl_query_ea)) + +static const struct wsl_query_ea wsl_query_eas[] = { + { .next = NEXT_OFF, .name_len = SMB2_WSL_XATTR_NAME_LEN, .name = SMB2_WSL_XATTR_UID, }, + { .next = NEXT_OFF, .name_len = SMB2_WSL_XATTR_NAME_LEN, .name = SMB2_WSL_XATTR_GID, }, + { .next = NEXT_OFF, .name_len = SMB2_WSL_XATTR_NAME_LEN, .name = SMB2_WSL_XATTR_MODE, }, + { .next = 0, .name_len = SMB2_WSL_XATTR_NAME_LEN, .name = SMB2_WSL_XATTR_DEV, }, +}; + +static int check_wsl_eas(struct kvec *rsp_iov) +{ + struct smb2_file_full_ea_info *ea; + struct smb2_query_info_rsp *rsp = rsp_iov->iov_base; + unsigned long addr; + u32 outlen, next; + u16 vlen; + u8 nlen; + u8 *end; + + outlen = le32_to_cpu(rsp->OutputBufferLength); + if (outlen < SMB2_WSL_MIN_QUERY_EA_RESP_SIZE || + outlen > SMB2_WSL_MAX_QUERY_EA_RESP_SIZE) + return -EINVAL; + + ea = (void *)((u8 *)rsp_iov->iov_base + + le16_to_cpu(rsp->OutputBufferOffset)); + end = (u8 *)rsp_iov->iov_base + rsp_iov->iov_len; + for (;;) { + if ((u8 *)ea > end - sizeof(*ea)) + return -EINVAL; + + nlen = ea->ea_name_length; + vlen = le16_to_cpu(ea->ea_value_length); + if (nlen != SMB2_WSL_XATTR_NAME_LEN || + (u8 *)ea + nlen + 1 + vlen > end) + return -EINVAL; + + switch (vlen) { + case 4: + if (strncmp(ea->ea_data, SMB2_WSL_XATTR_UID, nlen) && + strncmp(ea->ea_data, SMB2_WSL_XATTR_GID, nlen) && + strncmp(ea->ea_data, SMB2_WSL_XATTR_MODE, nlen)) + return -EINVAL; + break; + case 8: + if (strncmp(ea->ea_data, SMB2_WSL_XATTR_DEV, nlen)) + return -EINVAL; + break; + case 0: + if (!strncmp(ea->ea_data, SMB2_WSL_XATTR_UID, nlen) || + !strncmp(ea->ea_data, SMB2_WSL_XATTR_GID, nlen) || + !strncmp(ea->ea_data, SMB2_WSL_XATTR_MODE, nlen) || + !strncmp(ea->ea_data, SMB2_WSL_XATTR_DEV, nlen)) + break; + fallthrough; + default: + return -EINVAL; + } + + next = le32_to_cpu(ea->next_entry_offset); + if (!next) + break; + if (!IS_ALIGNED(next, 4) || + check_add_overflow((unsigned long)ea, next, &addr)) + return -EINVAL; + ea = (void *)addr; + } + return 0; +} + /* * note: If cfile is passed, the reference to it is dropped here. * So make sure that you do not reuse cfile after return from this func. @@ -95,32 +171,32 @@ static int parse_posix_sids(struct cifs_open_info_data *data, */ 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, struct kvec *in_iov, + struct cifs_open_parms *oparms, struct kvec *in_iov, int *cmds, int num_cmds, struct cifsFileInfo *cfile, - struct kvec *out_iov, int *out_buftype) + struct kvec *out_iov, int *out_buftype, struct dentry *dentry) { - struct reparse_data_buffer *rbuf; + struct smb2_query_info_rsp *qi_rsp = NULL; struct smb2_compound_vars *vars = NULL; - struct kvec *rsp_iov, *iov; - struct smb_rqst *rqst; - int rc; - __le16 *utf16_path = NULL; __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; - struct cifs_fid fid; + struct cifs_open_info_data *idata; struct cifs_ses *ses = tcon->ses; + struct reparse_data_buffer *rbuf; struct TCP_Server_Info *server; - int num_rqst = 0, i; int resp_buftype[MAX_COMPOUND]; - struct smb2_query_info_rsp *qi_rsp = NULL; - struct cifs_open_info_data *idata; - int flags = 0; - __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0}; + int retries = 0, cur_sleep = 1; + __u8 delete_pending[8] = {1,}; + struct kvec *rsp_iov, *iov; + struct inode *inode = NULL; + __le16 *utf16_path = NULL; + struct smb_rqst *rqst; unsigned int size[2]; + struct cifs_fid fid; + int num_rqst = 0, i; + unsigned int len; + int tmp_rc, rc; + int flags = 0; void *data[2]; - int len; - int retries = 0, cur_sleep = 1; replay_again: /* reinitialize for possible replay */ @@ -152,16 +228,28 @@ replay_again: goto finished; } - vars->oparms = (struct cifs_open_parms) { - .tcon = tcon, - .path = full_path, - .desired_access = desired_access, - .disposition = create_disposition, - .create_options = cifs_create_options(cifs_sb, create_options), - .fid = &fid, - .mode = mode, - .cifs_sb = cifs_sb, - }; + /* if there is an existing lease, reuse it */ + + /* + * note: files with hardlinks cause unexpected behaviour. As per MS-SMB2, + * lease keys are associated with the filepath. We are maintaining lease keys + * with the inode on the client. If the file has hardlinks, it is possible + * that the lease for a file be reused for an operation on its hardlink or + * vice versa. + * As a workaround, send request using an existing lease key and if the server + * returns STATUS_INVALID_PARAMETER, which maps to EINVAL, send the request + * again without the lease. + */ + if (dentry) { + inode = d_inode(dentry); + if (CIFS_I(inode)->lease_granted && server->ops->get_lease_key) { + oplock = SMB2_OPLOCK_LEVEL_LEASE; + server->ops->get_lease_key(inode, &fid); + } + } + + vars->oparms = *oparms; + vars->oparms.fid = &fid; rqst[num_rqst].rq_iov = &vars->open_iov[0]; rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE; @@ -202,17 +290,16 @@ replay_again: 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) + if (!rc && (!cfile || num_rqst > 1)) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } else if (rc) { goto finished; + } num_rqst++; - trace_smb3_query_info_compound_enter(xid, ses->Suid, - tcon->tid, full_path); + trace_smb3_query_info_compound_enter(xid, tcon->tid, + ses->Suid, full_path); break; case SMB2_OP_POSIX_QUERY_INFO: rqst[num_rqst].rq_iov = &vars->qi_iov; @@ -228,7 +315,7 @@ replay_again: SMB2_O_INFO_FILE, 0, sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) + - (sizeof(struct cifs_sid) * 2), 0, NULL); + (sizeof(struct smb_sid) * 2), 0, NULL); } else { rc = SMB2_query_info_init(tcon, server, &rqst[num_rqst], @@ -238,28 +325,27 @@ replay_again: 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]); - } + (sizeof(struct smb_sid) * 2), 0, NULL); } - - if (rc) + if (!rc && (!cfile || num_rqst > 1)) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } else if (rc) { goto finished; + } num_rqst++; - trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, - tcon->tid, full_path); + trace_smb3_posix_query_info_compound_enter(xid, tcon->tid, + ses->Suid, full_path); break; case SMB2_OP_DELETE: - trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path); + trace_smb3_delete_enter(xid, tcon->tid, ses->Suid, 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); + trace_smb3_mkdir_enter(xid, tcon->tid, ses->Suid, full_path); break; case SMB2_OP_RMDIR: rqst[num_rqst].rq_iov = &vars->si_iov[0]; @@ -277,7 +363,7 @@ replay_again: 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); + trace_smb3_rmdir_enter(xid, tcon->tid, ses->Suid, full_path); break; case SMB2_OP_SET_EOF: rqst[num_rqst].rq_iov = &vars->si_iov[0]; @@ -304,15 +390,15 @@ replay_again: FILE_END_OF_FILE_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) + if (!rc && (!cfile || num_rqst > 1)) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } else if (rc) { goto finished; + } num_rqst++; - trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path); + trace_smb3_set_eof_enter(xid, tcon->tid, ses->Suid, full_path); break; case SMB2_OP_SET_INFO: rqst[num_rqst].rq_iov = &vars->si_iov[0]; @@ -335,17 +421,16 @@ replay_again: 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) + if (!rc && (!cfile || num_rqst > 1)) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } else if (rc) { goto finished; + } num_rqst++; - trace_smb3_set_info_compound_enter(xid, ses->Suid, - tcon->tid, full_path); + trace_smb3_set_info_compound_enter(xid, tcon->tid, + ses->Suid, full_path); break; case SMB2_OP_RENAME: rqst[num_rqst].rq_iov = &vars->si_iov[0]; @@ -376,15 +461,15 @@ replay_again: 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) + if (!rc && (!cfile || num_rqst > 1)) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } else if (rc) { goto finished; + } num_rqst++; - trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path); + trace_smb3_rename_enter(xid, tcon->tid, ses->Suid, full_path); break; case SMB2_OP_HARDLINK: rqst[num_rqst].rq_iov = &vars->si_iov[0]; @@ -411,38 +496,96 @@ replay_again: 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); + trace_smb3_hardlink_enter(xid, tcon->tid, ses->Suid, full_path); break; case SMB2_OP_SET_REPARSE: rqst[num_rqst].rq_iov = vars->io_iov; rqst[num_rqst].rq_nvec = ARRAY_SIZE(vars->io_iov); - rc = SMB2_ioctl_init(tcon, server, &rqst[num_rqst], - COMPOUND_FID, COMPOUND_FID, - FSCTL_SET_REPARSE_POINT, - in_iov[i].iov_base, - in_iov[i].iov_len, 0); - if (rc) + if (cfile) { + rc = SMB2_ioctl_init(tcon, server, &rqst[num_rqst], + cfile->fid.persistent_fid, + cfile->fid.volatile_fid, + FSCTL_SET_REPARSE_POINT, + in_iov[i].iov_base, + in_iov[i].iov_len, 0); + } else { + rc = SMB2_ioctl_init(tcon, server, &rqst[num_rqst], + COMPOUND_FID, COMPOUND_FID, + FSCTL_SET_REPARSE_POINT, + in_iov[i].iov_base, + in_iov[i].iov_len, 0); + } + if (!rc && (!cfile || num_rqst > 1)) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } else if (rc) { goto finished; - smb2_set_next_command(tcon, &rqst[num_rqst]); - smb2_set_related(&rqst[num_rqst++]); - trace_smb3_set_reparse_compound_enter(xid, ses->Suid, - tcon->tid, full_path); + } + num_rqst++; + trace_smb3_set_reparse_compound_enter(xid, tcon->tid, + ses->Suid, full_path); break; case SMB2_OP_GET_REPARSE: rqst[num_rqst].rq_iov = vars->io_iov; rqst[num_rqst].rq_nvec = ARRAY_SIZE(vars->io_iov); - rc = SMB2_ioctl_init(tcon, server, &rqst[num_rqst], - COMPOUND_FID, COMPOUND_FID, - FSCTL_GET_REPARSE_POINT, - NULL, 0, CIFSMaxBufSize); - if (rc) + if (cfile) { + rc = SMB2_ioctl_init(tcon, server, &rqst[num_rqst], + cfile->fid.persistent_fid, + cfile->fid.volatile_fid, + FSCTL_GET_REPARSE_POINT, + NULL, 0, CIFSMaxBufSize); + } else { + rc = SMB2_ioctl_init(tcon, server, &rqst[num_rqst], + COMPOUND_FID, COMPOUND_FID, + FSCTL_GET_REPARSE_POINT, + NULL, 0, CIFSMaxBufSize); + } + if (!rc && (!cfile || num_rqst > 1)) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } else if (rc) { goto finished; - smb2_set_next_command(tcon, &rqst[num_rqst]); - smb2_set_related(&rqst[num_rqst++]); - trace_smb3_get_reparse_compound_enter(xid, ses->Suid, - tcon->tid, full_path); + } + num_rqst++; + trace_smb3_get_reparse_compound_enter(xid, tcon->tid, + ses->Suid, full_path); + break; + case SMB2_OP_QUERY_WSL_EA: + rqst[num_rqst].rq_iov = &vars->ea_iov; + 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_FULL_EA_INFORMATION, + SMB2_O_INFO_FILE, 0, + SMB2_WSL_MAX_QUERY_EA_RESP_SIZE, + sizeof(wsl_query_eas), + (void *)wsl_query_eas); + } else { + rc = SMB2_query_info_init(tcon, server, + &rqst[num_rqst], + COMPOUND_FID, + COMPOUND_FID, + FILE_FULL_EA_INFORMATION, + SMB2_O_INFO_FILE, 0, + SMB2_WSL_MAX_QUERY_EA_RESP_SIZE, + sizeof(wsl_query_eas), + (void *)wsl_query_eas); + } + if (!rc && (!cfile || num_rqst > 1)) { + smb2_set_next_command(tcon, &rqst[num_rqst]); + smb2_set_related(&rqst[num_rqst]); + } else if (rc) { + goto finished; + } + num_rqst++; + trace_smb3_query_wsl_ea_compound_enter(xid, tcon->tid, + ses->Suid, full_path); break; default: cifs_dbg(VFS, "Invalid command\n"); @@ -496,10 +639,18 @@ finished: tcon->need_reconnect = true; } + tmp_rc = rc; for (i = 0; i < num_cmds; i++) { + char *buf = rsp_iov[i + i].iov_base; + + if (buf && resp_buftype[i + 1] != CIFS_NO_BUFFER) + rc = server->ops->map_error(buf, false); + else + rc = tmp_rc; switch (cmds[i]) { case SMB2_OP_QUERY_INFO: idata = in_iov[i].iov_base; + idata->contains_posix_file_info = false; if (rc == 0 && cfile && cfile->symlink_target) { idata->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); if (!idata->symlink_target) @@ -515,14 +666,15 @@ finished: } SMB2_query_info_free(&rqst[num_rqst++]); if (rc) - trace_smb3_query_info_compound_err(xid, ses->Suid, - tcon->tid, rc); + trace_smb3_query_info_compound_err(xid, tcon->tid, + ses->Suid, rc); else - trace_smb3_query_info_compound_done(xid, ses->Suid, - tcon->tid); + trace_smb3_query_info_compound_done(xid, tcon->tid, + ses->Suid); break; case SMB2_OP_POSIX_QUERY_INFO: idata = in_iov[i].iov_base; + idata->contains_posix_file_info = true; if (rc == 0 && cfile && cfile->symlink_target) { idata->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); if (!idata->symlink_target) @@ -542,68 +694,75 @@ finished: SMB2_query_info_free(&rqst[num_rqst++]); if (rc) - trace_smb3_posix_query_info_compound_err(xid, ses->Suid, - tcon->tid, rc); + trace_smb3_posix_query_info_compound_err(xid, tcon->tid, + ses->Suid, rc); else - trace_smb3_posix_query_info_compound_done(xid, ses->Suid, - tcon->tid); + trace_smb3_posix_query_info_compound_done(xid, tcon->tid, + ses->Suid); 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); + trace_smb3_delete_err(xid, tcon->tid, ses->Suid, rc); + else { + /* + * If dentry (hence, inode) is NULL, lease break is going to + * take care of degrading leases on handles for deleted files. + */ + if (inode) + cifs_mark_open_handles_for_deleted_file(inode, full_path); + trace_smb3_delete_done(xid, tcon->tid, ses->Suid); + } break; case SMB2_OP_MKDIR: if (rc) - trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc); + trace_smb3_mkdir_err(xid, tcon->tid, ses->Suid, rc); else - trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid); + trace_smb3_mkdir_done(xid, tcon->tid, ses->Suid); break; case SMB2_OP_HARDLINK: if (rc) - trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc); + trace_smb3_hardlink_err(xid, tcon->tid, ses->Suid, rc); else - trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid); + trace_smb3_hardlink_done(xid, tcon->tid, ses->Suid); SMB2_set_info_free(&rqst[num_rqst++]); break; case SMB2_OP_RENAME: if (rc) - trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc); + trace_smb3_rename_err(xid, tcon->tid, ses->Suid, rc); else - trace_smb3_rename_done(xid, ses->Suid, tcon->tid); + trace_smb3_rename_done(xid, tcon->tid, ses->Suid); SMB2_set_info_free(&rqst[num_rqst++]); break; case SMB2_OP_RMDIR: if (rc) - trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc); + trace_smb3_rmdir_err(xid, tcon->tid, ses->Suid, rc); else - trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid); + trace_smb3_rmdir_done(xid, tcon->tid, ses->Suid); SMB2_set_info_free(&rqst[num_rqst++]); break; case SMB2_OP_SET_EOF: if (rc) - trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc); + trace_smb3_set_eof_err(xid, tcon->tid, ses->Suid, rc); else - trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid); + trace_smb3_set_eof_done(xid, tcon->tid, ses->Suid); SMB2_set_info_free(&rqst[num_rqst++]); break; case SMB2_OP_SET_INFO: if (rc) - trace_smb3_set_info_compound_err(xid, ses->Suid, - tcon->tid, rc); + trace_smb3_set_info_compound_err(xid, tcon->tid, + ses->Suid, rc); else - trace_smb3_set_info_compound_done(xid, ses->Suid, - tcon->tid); + trace_smb3_set_info_compound_done(xid, tcon->tid, + ses->Suid); SMB2_set_info_free(&rqst[num_rqst++]); break; case SMB2_OP_SET_REPARSE: if (rc) { - trace_smb3_set_reparse_compound_err(xid, ses->Suid, - tcon->tid, rc); + trace_smb3_set_reparse_compound_err(xid, tcon->tid, + ses->Suid, rc); } else { - trace_smb3_set_reparse_compound_done(xid, ses->Suid, - tcon->tid); + trace_smb3_set_reparse_compound_done(xid, tcon->tid, + ses->Suid); } SMB2_ioctl_free(&rqst[num_rqst++]); break; @@ -613,27 +772,51 @@ finished: idata = in_iov[i].iov_base; idata->reparse.io.iov = *iov; idata->reparse.io.buftype = resp_buftype[i + 1]; + idata->contains_posix_file_info = false; /* BB VERIFY */ rbuf = reparse_buf_ptr(iov); if (IS_ERR(rbuf)) { rc = PTR_ERR(rbuf); - trace_smb3_set_reparse_compound_err(xid, ses->Suid, - tcon->tid, rc); + trace_smb3_get_reparse_compound_err(xid, tcon->tid, + ses->Suid, rc); } else { idata->reparse.tag = le32_to_cpu(rbuf->ReparseTag); - trace_smb3_set_reparse_compound_done(xid, ses->Suid, - tcon->tid); + trace_smb3_get_reparse_compound_done(xid, tcon->tid, + ses->Suid); } memset(iov, 0, sizeof(*iov)); resp_buftype[i + 1] = CIFS_NO_BUFFER; } else { - trace_smb3_set_reparse_compound_err(xid, ses->Suid, - tcon->tid, rc); + trace_smb3_get_reparse_compound_err(xid, tcon->tid, + ses->Suid, rc); } SMB2_ioctl_free(&rqst[num_rqst++]); break; + case SMB2_OP_QUERY_WSL_EA: + if (!rc) { + idata = in_iov[i].iov_base; + idata->contains_posix_file_info = false; + qi_rsp = rsp_iov[i + 1].iov_base; + data[0] = (u8 *)qi_rsp + le16_to_cpu(qi_rsp->OutputBufferOffset); + size[0] = le32_to_cpu(qi_rsp->OutputBufferLength); + rc = check_wsl_eas(&rsp_iov[i + 1]); + if (!rc) { + memcpy(idata->wsl.eas, data[0], size[0]); + idata->wsl.eas_len = size[0]; + } + } + if (!rc) { + trace_smb3_query_wsl_ea_compound_done(xid, tcon->tid, + ses->Suid); + } else { + trace_smb3_query_wsl_ea_compound_err(xid, tcon->tid, + ses->Suid, rc); + } + SMB2_query_info_free(&rqst[num_rqst++]); + break; } } SMB2_close_free(&rqst[num_rqst]); + rc = tmp_rc; num_cmds += 2; if (out_iov && out_buftype) { @@ -659,6 +842,7 @@ finished: static int parse_create_response(struct cifs_open_info_data *data, struct cifs_sb_info *cifs_sb, + const char *full_path, const struct kvec *iov) { struct smb2_create_rsp *rsp = iov->iov_base; @@ -672,6 +856,7 @@ static int parse_create_response(struct cifs_open_info_data *data, break; case STATUS_STOPPED_ON_SYMLINK: rc = smb2_parse_symlink_response(cifs_sb, iov, + full_path, &data->symlink_target); if (rc) return rc; @@ -687,21 +872,52 @@ static int parse_create_response(struct cifs_open_info_data *data, return rc; } +/* Check only if SMB2_OP_QUERY_WSL_EA command failed in the compound chain */ +static bool ea_unsupported(int *cmds, int num_cmds, + struct kvec *out_iov, int *out_buftype) +{ + int i; + + if (cmds[num_cmds - 1] != SMB2_OP_QUERY_WSL_EA) + return false; + + for (i = 1; i < num_cmds - 1; i++) { + struct smb2_hdr *hdr = out_iov[i].iov_base; + + if (out_buftype[i] == CIFS_NO_BUFFER || !hdr || + hdr->Status != STATUS_SUCCESS) + return false; + } + return true; +} + +static inline void free_rsp_iov(struct kvec *iovs, int *buftype, int count) +{ + int i; + + for (i = 0; i < count; i++) { + free_rsp_buf(buftype[i], iovs[i].iov_base); + memset(&iovs[i], 0, sizeof(*iovs)); + buftype[i] = CIFS_NO_BUFFER; + } +} + int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, const char *full_path, struct cifs_open_info_data *data) { - __u32 create_options = 0; - struct cifsFileInfo *cfile; + struct kvec in_iov[3], out_iov[5] = {}; struct cached_fid *cfid = NULL; + struct cifs_open_parms oparms; + struct cifsFileInfo *cfile; + __u32 create_options = 0; + int out_buftype[5] = {}; struct smb2_hdr *hdr; - struct kvec in_iov[2], out_iov[3] = {}; - int out_buftype[3] = {}; - int cmds[2]; + int num_cmds = 0; + int cmds[3]; bool islink; - int i, num_cmds; int rc, rc2; data->adjust_tz = false; @@ -734,20 +950,22 @@ int smb2_query_path_info(const unsigned int xid, close_cached_dir(cfid); return rc; } - cmds[0] = SMB2_OP_QUERY_INFO; + cmds[num_cmds++] = SMB2_OP_QUERY_INFO; } else { - cmds[0] = SMB2_OP_POSIX_QUERY_INFO; + cmds[num_cmds++] = SMB2_OP_POSIX_QUERY_INFO; } in_iov[0].iov_base = data; in_iov[0].iov_len = sizeof(*data); in_iov[1] = in_iov[0]; + in_iov[2] = in_iov[0]; cifs_get_readable_path(tcon, full_path, &cfile); + oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_READ_ATTRIBUTES, + FILE_OPEN, create_options, ACL_NO_MODE); rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, - FILE_READ_ATTRIBUTES, FILE_OPEN, - create_options, ACL_NO_MODE, in_iov, - cmds, 1, cfile, out_iov, out_buftype); + &oparms, in_iov, cmds, num_cmds, + cfile, out_iov, out_buftype, NULL); hdr = out_iov[0].iov_base; /* * If first iov is unset, then SMB session was dropped or we've got a @@ -758,28 +976,49 @@ int smb2_query_path_info(const unsigned int xid, switch (rc) { case 0: + rc = parse_create_response(data, cifs_sb, full_path, &out_iov[0]); + break; case -EOPNOTSUPP: /* * BB TODO: When support for special files added to Samba * re-verify this path. */ - rc = parse_create_response(data, cifs_sb, &out_iov[0]); + rc = parse_create_response(data, cifs_sb, full_path, &out_iov[0]); if (rc || !data->reparse_point) goto out; - if (data->reparse.tag == IO_REPARSE_TAG_SYMLINK) { - /* symlink already parsed in create response */ - num_cmds = 1; - } else { - cmds[1] = SMB2_OP_GET_REPARSE; - num_cmds = 2; - } - create_options |= OPEN_REPARSE_POINT; + /* + * Skip SMB2_OP_GET_REPARSE if symlink already parsed in create + * response. + */ + if (data->reparse.tag != IO_REPARSE_TAG_SYMLINK) + cmds[num_cmds++] = SMB2_OP_GET_REPARSE; + if (!tcon->posix_extensions) + cmds[num_cmds++] = SMB2_OP_QUERY_WSL_EA; + + oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, + FILE_READ_ATTRIBUTES | + FILE_READ_EA | SYNCHRONIZE, + FILE_OPEN, create_options | + OPEN_REPARSE_POINT, ACL_NO_MODE); cifs_get_readable_path(tcon, full_path, &cfile); + free_rsp_iov(out_iov, out_buftype, ARRAY_SIZE(out_iov)); rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, - FILE_READ_ATTRIBUTES, FILE_OPEN, - create_options, ACL_NO_MODE, in_iov, - cmds, num_cmds, cfile, NULL, NULL); + &oparms, in_iov, cmds, num_cmds, + cfile, out_iov, out_buftype, NULL); + if (rc && ea_unsupported(cmds, num_cmds, + out_iov, out_buftype)) { + if (data->reparse.tag != IO_REPARSE_TAG_LX_BLK && + data->reparse.tag != IO_REPARSE_TAG_LX_CHR) + rc = 0; + else + rc = -EOPNOTSUPP; + } + + if (data->reparse.tag == IO_REPARSE_TAG_SYMLINK && !rc) { + bool directory = le32_to_cpu(data->fi.Attributes) & ATTR_DIRECTORY; + rc = smb2_fix_symlink_target_type(&data->symlink_target, directory, cifs_sb); + } break; case -EREMOTE: break; @@ -797,8 +1036,7 @@ int smb2_query_path_info(const unsigned int xid, } out: - for (i = 0; i < ARRAY_SIZE(out_buftype); i++) - free_rsp_buf(out_buftype[i], out_iov[i].iov_base); + free_rsp_iov(out_iov, out_buftype, ARRAY_SIZE(out_iov)); return rc; } @@ -807,11 +1045,14 @@ 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, &(int){SMB2_OP_MKDIR}, 1, - NULL, NULL, NULL); + struct cifs_open_parms oparms; + + oparms = CIFS_OPARMS(cifs_sb, tcon, name, FILE_WRITE_ATTRIBUTES, + FILE_CREATE, CREATE_NOT_FILE, mode); + return smb2_compound_op(xid, tcon, cifs_sb, + name, &oparms, NULL, + &(int){SMB2_OP_MKDIR}, 1, + NULL, NULL, NULL, NULL); } void @@ -819,6 +1060,7 @@ smb2_mkdir_setinfo(struct inode *inode, const char *name, struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, const unsigned int xid) { + struct cifs_open_parms oparms; FILE_BASIC_INFO data = {}; struct cifsInodeInfo *cifs_i; struct cifsFileInfo *cfile; @@ -832,11 +1074,12 @@ smb2_mkdir_setinfo(struct inode *inode, const char *name, dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; data.Attributes = cpu_to_le32(dosattrs); cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile); + oparms = CIFS_OPARMS(cifs_sb, tcon, name, FILE_WRITE_ATTRIBUTES, + FILE_CREATE, CREATE_NOT_FILE, ACL_NO_MODE); tmprc = smb2_compound_op(xid, tcon, cifs_sb, name, - FILE_WRITE_ATTRIBUTES, FILE_CREATE, - CREATE_NOT_FILE, ACL_NO_MODE, &in_iov, + &oparms, &in_iov, &(int){SMB2_OP_SET_INFO}, 1, - cfile, NULL, NULL); + cfile, NULL, NULL, NULL); if (tmprc == 0) cifs_i->cifsAttrs = dosattrs; } @@ -845,31 +1088,47 @@ int smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, struct cifs_sb_info *cifs_sb) { + struct cifs_open_parms oparms; + drop_cached_dir_by_name(xid, tcon, name, cifs_sb); - return smb2_compound_op(xid, tcon, cifs_sb, name, - DELETE, FILE_OPEN, CREATE_NOT_FILE, - ACL_NO_MODE, NULL, + oparms = CIFS_OPARMS(cifs_sb, tcon, name, DELETE, + FILE_OPEN, CREATE_NOT_FILE, ACL_NO_MODE); + return smb2_compound_op(xid, tcon, cifs_sb, + name, &oparms, NULL, &(int){SMB2_OP_RMDIR}, 1, - NULL, NULL, NULL); + NULL, NULL, NULL, NULL); } int smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name, - struct cifs_sb_info *cifs_sb) + struct cifs_sb_info *cifs_sb, struct dentry *dentry) { - return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN, - CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT, - ACL_NO_MODE, NULL, - &(int){SMB2_OP_DELETE}, 1, - NULL, NULL, NULL); + struct cifs_open_parms oparms; + + oparms = CIFS_OPARMS(cifs_sb, tcon, name, + DELETE, FILE_OPEN, + CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT, + ACL_NO_MODE); + int rc = smb2_compound_op(xid, tcon, cifs_sb, name, &oparms, + NULL, &(int){SMB2_OP_DELETE}, 1, + NULL, NULL, NULL, dentry); + if (rc == -EINVAL) { + cifs_dbg(FYI, "invalid lease key, resending request without lease"); + rc = smb2_compound_op(xid, tcon, cifs_sb, name, &oparms, + NULL, &(int){SMB2_OP_DELETE}, 1, + NULL, NULL, NULL, NULL); + } + return rc; } 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 create_options, __u32 access, - int command, struct cifsFileInfo *cfile) + int command, struct cifsFileInfo *cfile, + struct dentry *dentry) { + struct cifs_open_parms oparms; struct kvec in_iov; __le16 *smb2_to_name = NULL; int rc; @@ -881,9 +1140,11 @@ static int smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, } in_iov.iov_base = smb2_to_name; in_iov.iov_len = 2 * UniStrnlen((wchar_t *)smb2_to_name, PATH_MAX); - rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access, - FILE_OPEN, create_options, ACL_NO_MODE, - &in_iov, &command, 1, cfile, NULL, NULL); + oparms = CIFS_OPARMS(cifs_sb, tcon, from_name, access, FILE_OPEN, + create_options, ACL_NO_MODE); + rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, + &oparms, &in_iov, &command, 1, + cfile, NULL, NULL, dentry); smb2_rename_path: kfree(smb2_to_name); return rc; @@ -901,8 +1162,16 @@ int smb2_rename_path(const unsigned int xid, drop_cached_dir_by_name(xid, tcon, from_name, cifs_sb); 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, - co, DELETE, SMB2_OP_RENAME, cfile); + int rc = smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, + co, DELETE, SMB2_OP_RENAME, cfile, source_dentry); + if (rc == -EINVAL) { + cifs_dbg(FYI, "invalid lease key, resending request without lease"); + cifs_get_writable_path(tcon, from_name, + FIND_WR_WITH_DELETE, &cfile); + rc = smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, + co, DELETE, SMB2_OP_RENAME, cfile, NULL); + } + return rc; } int smb2_create_hardlink(const unsigned int xid, @@ -915,32 +1184,47 @@ int smb2_create_hardlink(const unsigned int xid, return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, co, FILE_READ_ATTRIBUTES, - SMB2_OP_HARDLINK, NULL); + SMB2_OP_HARDLINK, NULL, 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) + struct cifs_sb_info *cifs_sb, bool set_alloc, + struct dentry *dentry) { + struct cifs_open_parms oparms; struct cifsFileInfo *cfile; struct kvec in_iov; __le64 eof = cpu_to_le64(size); + int rc; in_iov.iov_base = &eof; in_iov.iov_len = sizeof(eof); cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); - return smb2_compound_op(xid, tcon, cifs_sb, full_path, - FILE_WRITE_DATA, FILE_OPEN, - 0, ACL_NO_MODE, &in_iov, - &(int){SMB2_OP_SET_EOF}, 1, - cfile, NULL, NULL); + + oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_WRITE_DATA, + FILE_OPEN, 0, ACL_NO_MODE); + rc = smb2_compound_op(xid, tcon, cifs_sb, + full_path, &oparms, &in_iov, + &(int){SMB2_OP_SET_EOF}, 1, + cfile, NULL, NULL, dentry); + if (rc == -EINVAL) { + cifs_dbg(FYI, "invalid lease key, resending request without lease"); + cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); + rc = smb2_compound_op(xid, tcon, cifs_sb, + full_path, &oparms, &in_iov, + &(int){SMB2_OP_SET_EOF}, 1, + cfile, NULL, NULL, NULL); + } + return rc; } int smb2_set_file_info(struct inode *inode, const char *full_path, FILE_BASIC_INFO *buf, const unsigned int xid) { + struct cifs_open_parms oparms; struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct tcon_link *tlink; struct cifs_tcon *tcon; @@ -959,11 +1243,12 @@ smb2_set_file_info(struct inode *inode, const char *full_path, tcon = tlink_tcon(tlink); cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); - rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, - FILE_WRITE_ATTRIBUTES, FILE_OPEN, - 0, ACL_NO_MODE, &in_iov, + oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_WRITE_ATTRIBUTES, + FILE_OPEN, 0, ACL_NO_MODE); + rc = smb2_compound_op(xid, tcon, cifs_sb, + full_path, &oparms, &in_iov, &(int){SMB2_OP_SET_INFO}, 1, - cfile, NULL, NULL); + cfile, NULL, NULL, NULL); cifs_put_tlink(tlink); return rc; } @@ -973,32 +1258,41 @@ struct inode *smb2_get_reparse_inode(struct cifs_open_info_data *data, const unsigned int xid, struct cifs_tcon *tcon, const char *full_path, - struct kvec *iov) + bool directory, + struct kvec *reparse_iov, + struct kvec *xattr_iov) { + struct cifs_open_parms oparms; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); struct cifsFileInfo *cfile; struct inode *new = NULL; + int out_buftype[4] = {}; + struct kvec out_iov[4] = {}; struct kvec in_iov[2]; int cmds[2]; - int da, co, cd; int rc; + int i; + + oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, + SYNCHRONIZE | DELETE | + FILE_READ_ATTRIBUTES | + FILE_WRITE_ATTRIBUTES, + FILE_CREATE, + (directory ? CREATE_NOT_FILE : CREATE_NOT_DIR) | OPEN_REPARSE_POINT, + ACL_NO_MODE); + if (xattr_iov) + oparms.ea_cctx = xattr_iov; - da = SYNCHRONIZE | DELETE | - FILE_READ_ATTRIBUTES | - FILE_WRITE_ATTRIBUTES; - co = CREATE_NOT_DIR | OPEN_REPARSE_POINT; - cd = FILE_CREATE; cmds[0] = SMB2_OP_SET_REPARSE; - in_iov[0] = *iov; + in_iov[0] = *reparse_iov; in_iov[1].iov_base = data; in_iov[1].iov_len = sizeof(*data); if (tcon->posix_extensions) { cmds[1] = SMB2_OP_POSIX_QUERY_INFO; cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); - rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, - da, cd, co, ACL_NO_MODE, in_iov, - cmds, 2, cfile, NULL, NULL); + rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, &oparms, + in_iov, cmds, 2, cfile, out_iov, out_buftype, NULL); if (!rc) { rc = smb311_posix_get_inode_info(&new, full_path, data, sb, xid); @@ -1006,14 +1300,30 @@ struct inode *smb2_get_reparse_inode(struct cifs_open_info_data *data, } else { cmds[1] = SMB2_OP_QUERY_INFO; cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); - rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, - da, cd, co, ACL_NO_MODE, in_iov, - cmds, 2, cfile, NULL, NULL); + rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, &oparms, + in_iov, cmds, 2, cfile, out_iov, out_buftype, NULL); if (!rc) { rc = cifs_get_inode_info(&new, full_path, data, sb, xid, NULL); } } + + + /* + * If CREATE was successful but SMB2_OP_SET_REPARSE failed then + * remove the intermediate object created by CREATE. Otherwise + * empty object stay on the server when reparse call failed. + */ + if (rc && + out_iov[0].iov_base != NULL && out_buftype[0] != CIFS_NO_BUFFER && + ((struct smb2_hdr *)out_iov[0].iov_base)->Status == STATUS_SUCCESS && + (out_iov[1].iov_base == NULL || out_buftype[1] == CIFS_NO_BUFFER || + ((struct smb2_hdr *)out_iov[1].iov_base)->Status != STATUS_SUCCESS)) + smb2_unlink(xid, tcon, full_path, cifs_sb, NULL); + + for (i = 0; i < ARRAY_SIZE(out_buftype); i++) + free_rsp_buf(out_buftype[i], out_iov[i].iov_base); + return rc ? ERR_PTR(rc) : new; } @@ -1024,6 +1334,7 @@ int smb2_query_reparse_point(const unsigned int xid, u32 *tag, struct kvec *rsp, int *rsp_buftype) { + struct cifs_open_parms oparms; struct cifs_open_info_data data = {}; struct cifsFileInfo *cfile; struct kvec in_iov = { .iov_base = &data, .iov_len = sizeof(data), }; @@ -1032,11 +1343,13 @@ int smb2_query_reparse_point(const unsigned int xid, cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); cifs_get_readable_path(tcon, full_path, &cfile); - rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, - FILE_READ_ATTRIBUTES, FILE_OPEN, - OPEN_REPARSE_POINT, ACL_NO_MODE, &in_iov, + oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, + FILE_READ_ATTRIBUTES | FILE_READ_EA | SYNCHRONIZE, + FILE_OPEN, OPEN_REPARSE_POINT, ACL_NO_MODE); + rc = smb2_compound_op(xid, tcon, cifs_sb, + full_path, &oparms, &in_iov, &(int){SMB2_OP_GET_REPARSE}, 1, - cfile, NULL, NULL); + cfile, NULL, NULL, NULL); if (rc) goto out; |