static int CIFSCreateMFSymLink(const int xid, struct cifs_tcon *tcon, const char *fromName, const char *toName, struct cifs_sb_info *cifs_sb) { int rc; int oplock = 0; int remap; int create_options = CREATE_NOT_DIR; __u16 netfid = 0; u8 *buf; unsigned int bytes_written = 0; struct cifs_io_parms io_parms; struct nls_table *nls_codepage; nls_codepage = cifs_sb->local_nls; remap = cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR; buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; rc = CIFSFormatMFSymlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName); if (rc != 0) { kfree(buf); return rc; } if (backup_cred(cifs_sb)) create_options |= CREATE_OPEN_BACKUP_INTENT; rc = CIFSSMBOpen(xid, tcon, fromName, FILE_CREATE, GENERIC_WRITE, create_options, &netfid, &oplock, NULL, nls_codepage, remap); if (rc != 0) { kfree(buf); return rc; } io_parms.netfid = netfid; io_parms.pid = current->tgid; io_parms.tcon = tcon; io_parms.offset = 0; io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE; rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, buf, NULL, 0); CIFSSMBClose(xid, tcon, netfid); kfree(buf); if (rc != 0) return rc; if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE) return -EIO; return 0; }
static int CIFSCreateMFSymLink(const int xid, struct cifs_tcon *tcon, const char *fromName, const char *toName, const struct nls_table *nls_codepage, int remap) { int rc; int oplock = 0; __u16 netfid = 0; u8 *buf; unsigned int bytes_written = 0; struct cifs_io_parms io_parms; buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; rc = CIFSFormatMFSymlink(buf, CIFS_MF_SYMLINK_FILE_SIZE, toName); if (rc != 0) { kfree(buf); return rc; } rc = CIFSSMBOpen(xid, tcon, fromName, FILE_CREATE, GENERIC_WRITE, CREATE_NOT_DIR, &netfid, &oplock, NULL, nls_codepage, remap); if (rc != 0) { kfree(buf); return rc; } io_parms.netfid = netfid; io_parms.pid = current->tgid; io_parms.tcon = tcon; io_parms.offset = 0; io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE; rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, buf, NULL, 0); CIFSSMBClose(xid, tcon, netfid); kfree(buf); if (rc != 0) return rc; if (bytes_written != CIFS_MF_SYMLINK_FILE_SIZE) return -EIO; return 0; }
int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, const unsigned char *path, char *pbuf, unsigned int *pbytes_written) { int rc; int oplock = 0; struct cifs_fid fid; struct cifs_open_parms oparms; struct cifs_io_parms io_parms; int create_options = CREATE_NOT_DIR; if (backup_cred(cifs_sb)) create_options |= CREATE_OPEN_BACKUP_INTENT; oparms.tcon = tcon; oparms.cifs_sb = cifs_sb; oparms.desired_access = GENERIC_WRITE; oparms.share_access = FILE_SHARE_ALL; oparms.create_options = create_options; oparms.disposition = FILE_CREATE; oparms.path = path; oparms.fid = &fid; oparms.reconnect = false; rc = CIFS_open(xid, &oparms, &oplock, NULL); if (rc) return rc; io_parms.netfid = fid.netfid; io_parms.pid = current->tgid; io_parms.tcon = tcon; io_parms.offset = 0; io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE; rc = CIFSSMBWrite(xid, &io_parms, pbytes_written, pbuf, NULL, 0); CIFSSMBClose(xid, tcon, fid.netfid); return rc; }
int cifs_mknod(struct inode *inode, struct dentry *direntry, umode_t mode, dev_t device_number) { int rc = -EPERM; unsigned int xid; int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL; struct cifs_sb_info *cifs_sb; struct tcon_link *tlink; struct cifs_tcon *pTcon; struct cifs_io_parms io_parms; char *full_path = NULL; struct inode *newinode = NULL; int oplock = 0; u16 fileHandle; FILE_ALL_INFO *buf = NULL; unsigned int bytes_written; struct win_dev *pdev; if (!old_valid_dev(device_number)) return -EINVAL; cifs_sb = CIFS_SB(inode->i_sb); tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return PTR_ERR(tlink); pTcon = tlink_tcon(tlink); xid = get_xid(); full_path = build_path_from_dentry(direntry); if (full_path == NULL) { rc = -ENOMEM; goto mknod_out; } if (pTcon->unix_ext) { struct cifs_unix_set_info_args args = { .mode = mode & ~current_umask(), .ctime = NO_CHANGE_64, .atime = NO_CHANGE_64, .mtime = NO_CHANGE_64, .device = device_number, }; if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { args.uid = current_fsuid(); args.gid = current_fsgid(); } else { args.uid = INVALID_UID; /* no change */ args.gid = INVALID_GID; /* no change */ } rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc) goto mknod_out; rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb, xid); if (rc == 0) d_instantiate(direntry, newinode); goto mknod_out; } if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) goto mknod_out; cifs_dbg(FYI, "sfu compat create special file\n"); buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); if (buf == NULL) { kfree(full_path); rc = -ENOMEM; free_xid(xid); return rc; } if (backup_cred(cifs_sb)) create_options |= CREATE_OPEN_BACKUP_INTENT; rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE, GENERIC_WRITE, create_options, &fileHandle, &oplock, buf, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc) goto mknod_out; /* BB Do not bother to decode buf since no local inode yet to put * timestamps in, but we can reuse it safely */ pdev = (struct win_dev *)buf; io_parms.netfid = fileHandle; io_parms.pid = current->tgid; io_parms.tcon = pTcon; io_parms.offset = 0; io_parms.length = sizeof(struct win_dev); if (S_ISCHR(mode)) { memcpy(pdev->type, "IntxCHR", 8); pdev->major = cpu_to_le64(MAJOR(device_number)); pdev->minor = cpu_to_le64(MINOR(device_number)); rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, (char *)pdev, NULL, 0); } else if (S_ISBLK(mode)) { memcpy(pdev->type, "IntxBLK", 8); pdev->major = cpu_to_le64(MAJOR(device_number)); pdev->minor = cpu_to_le64(MINOR(device_number)); rc = CIFSSMBWrite(xid, &io_parms, &bytes_written, (char *)pdev, NULL, 0); } /* else if (S_ISFIFO) */ CIFSSMBClose(xid, pTcon, fileHandle); d_drop(direntry); /* FIXME: add code here to set EAs */ mknod_out: kfree(full_path); kfree(buf); free_xid(xid); cifs_put_tlink(tlink); return rc; }
int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t device_number) { int rc = -EPERM; int xid; struct cifs_sb_info *cifs_sb; struct cifsTconInfo *pTcon; char *full_path = NULL; struct inode * newinode = NULL; if (!old_valid_dev(device_number)) return -EINVAL; xid = GetXid(); cifs_sb = CIFS_SB(inode->i_sb); pTcon = cifs_sb->tcon; full_path = build_path_from_dentry(direntry); if (full_path == NULL) rc = -ENOMEM; else if (pTcon->ses->capabilities & CAP_UNIX) { mode &= ~current->fs->umask; if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, (__u64)current->fsuid, (__u64)current->fsgid, device_number, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } else { rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, (__u64)-1, (__u64)-1, device_number, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } if (!rc) { rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb, xid); if (pTcon->nocase) direntry->d_op = &cifs_ci_dentry_ops; else direntry->d_op = &cifs_dentry_ops; if (rc == 0) d_instantiate(direntry, newinode); } } else { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { int oplock = 0; u16 fileHandle; FILE_ALL_INFO * buf; cFYI(1, ("sfu compat create special file")); buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); if (buf == NULL) { kfree(full_path); FreeXid(xid); return -ENOMEM; } rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE, /* fail if exists */ GENERIC_WRITE /* BB would WRITE_OWNER | WRITE_DAC be better? */, /* Create a file and set the file attribute to SYSTEM */ CREATE_NOT_DIR | CREATE_OPTION_SPECIAL, &fileHandle, &oplock, buf, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); /* BB FIXME - add handling for backlevel servers which need legacy open and check for all calls to SMBOpen for fallback to SMBLeagcyOpen */ if (!rc) { /* BB Do not bother to decode buf since no local inode yet to put timestamps in, but we can reuse it safely */ int bytes_written; struct win_dev *pdev; pdev = (struct win_dev *)buf; if (S_ISCHR(mode)) { memcpy(pdev->type, "IntxCHR", 8); pdev->major = cpu_to_le64(MAJOR(device_number)); pdev->minor = cpu_to_le64(MINOR(device_number)); rc = CIFSSMBWrite(xid, pTcon, fileHandle, sizeof(struct win_dev), 0, &bytes_written, (char *)pdev, NULL, 0); } else if (S_ISBLK(mode)) { memcpy(pdev->type, "IntxBLK", 8); pdev->major = cpu_to_le64(MAJOR(device_number)); pdev->minor = cpu_to_le64(MINOR(device_number)); rc = CIFSSMBWrite(xid, pTcon, fileHandle, sizeof(struct win_dev), 0, &bytes_written, (char *)pdev, NULL, 0); } /* else if(S_ISFIFO */ CIFSSMBClose(xid, pTcon, fileHandle); d_drop(direntry); } kfree(buf); /* add code here to set EAs */ } } kfree(full_path); FreeXid(xid); return rc; }
int cifs_mknod(struct inode *inode, struct dentry *direntry, int mode, dev_t device_number) { int rc = -EPERM; int xid; struct cifs_sb_info *cifs_sb; struct cifsTconInfo *pTcon; char *full_path = NULL; struct inode *newinode = NULL; int oplock = 0; u16 fileHandle; FILE_ALL_INFO *buf = NULL; unsigned int bytes_written; struct win_dev *pdev; if (!old_valid_dev(device_number)) return -EINVAL; xid = GetXid(); cifs_sb = CIFS_SB(inode->i_sb); pTcon = cifs_sb->tcon; full_path = build_path_from_dentry(direntry); if (full_path == NULL) { rc = -ENOMEM; goto mknod_out; } if (pTcon->unix_ext) { struct cifs_unix_set_info_args args = { .mode = mode & ~current_umask(), .ctime = NO_CHANGE_64, .atime = NO_CHANGE_64, .mtime = NO_CHANGE_64, .device = device_number, }; if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { args.uid = (__u64) current_fsuid(); args.gid = (__u64) current_fsgid(); } else { args.uid = NO_CHANGE_64; args.gid = NO_CHANGE_64; } rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc) goto mknod_out; rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb, xid); if (pTcon->nocase) direntry->d_op = &cifs_ci_dentry_ops; else direntry->d_op = &cifs_dentry_ops; if (rc == 0) d_instantiate(direntry, newinode); goto mknod_out; } if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) goto mknod_out; cFYI(1, "sfu compat create special file"); buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); if (buf == NULL) { kfree(full_path); rc = -ENOMEM; FreeXid(xid); return rc; } rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_CREATE, GENERIC_WRITE, CREATE_NOT_DIR | CREATE_OPTION_SPECIAL, &fileHandle, &oplock, buf, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc) goto mknod_out; /* BB Do not bother to decode buf since no local inode yet to put * timestamps in, but we can reuse it safely */ pdev = (struct win_dev *)buf; if (S_ISCHR(mode)) { memcpy(pdev->type, "IntxCHR", 8); pdev->major = cpu_to_le64(MAJOR(device_number)); pdev->minor = cpu_to_le64(MINOR(device_number)); rc = CIFSSMBWrite(xid, pTcon, fileHandle, sizeof(struct win_dev), 0, &bytes_written, (char *)pdev, NULL, 0); } else if (S_ISBLK(mode)) { memcpy(pdev->type, "IntxBLK", 8); pdev->major = cpu_to_le64(MAJOR(device_number)); pdev->minor = cpu_to_le64(MINOR(device_number)); rc = CIFSSMBWrite(xid, pTcon, fileHandle, sizeof(struct win_dev), 0, &bytes_written, (char *)pdev, NULL, 0); } /* else if (S_ISFIFO) */ CIFSSMBClose(xid, pTcon, fileHandle); d_drop(direntry); mknod_out: kfree(full_path); kfree(buf); FreeXid(xid); return rc; }