static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb, const char *path, u32 *pacllen) { struct cifs_ntsd *pntsd = NULL; int oplock = 0; int xid, rc; __u16 fid; xid = GetXid(); rc = CIFSSMBOpen(xid, cifs_sb->tcon, path, FILE_OPEN, READ_CONTROL, 0, &fid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc) { cERROR(1, "Unable to open file to get ACL"); goto out; } rc = CIFSSMBGetCIFSACL(xid, cifs_sb->tcon, fid, &pntsd, pacllen); cFYI(1, "GetCIFSACL rc = %d ACL len %d", rc, *pacllen); CIFSSMBClose(xid, cifs_sb->tcon, fid); out: FreeXid(xid); return pntsd; }
static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb, const char *path, u32 *pacllen) { struct cifs_ntsd *pntsd = NULL; int oplock = 0; int xid, rc, create_options = 0; __u16 fid; struct cifs_tcon *tcon; struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return ERR_CAST(tlink); tcon = tlink_tcon(tlink); xid = GetXid(); if (backup_cred(cifs_sb)) create_options |= CREATE_OPEN_BACKUP_INTENT; rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, READ_CONTROL, create_options, &fid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (!rc) { rc = CIFSSMBGetCIFSACL(xid, tcon, fid, &pntsd, pacllen); CIFSSMBClose(xid, tcon, fid); } cifs_put_tlink(tlink); FreeXid(xid); cFYI(1, "%s: rc = %d ACL len %d", __func__, rc, *pacllen); if (rc) return ERR_PTR(rc); return pntsd; }
/* Retrieve an ACL from the server */ static struct cifs_ntsd *get_cifs_acl(u32 *pacllen, struct inode *inode, const char *path, const __u16 *pfid) { struct cifsFileInfo *open_file = NULL; bool unlock_file = false; int xid; int rc = -EIO; __u16 fid; struct super_block *sb; struct cifs_sb_info *cifs_sb; struct cifs_ntsd *pntsd = NULL; cFYI(1, ("get mode from ACL for %s", path)); if (inode == NULL) return NULL; xid = GetXid(); if (pfid == NULL) open_file = find_readable_file(CIFS_I(inode)); else fid = *pfid; sb = inode->i_sb; if (sb == NULL) { FreeXid(xid); return NULL; } cifs_sb = CIFS_SB(sb); if (open_file) { unlock_file = true; fid = open_file->netfid; } else if (pfid == NULL) { int oplock = 0; /* open file */ rc = CIFSSMBOpen(xid, cifs_sb->tcon, path, FILE_OPEN, READ_CONTROL, 0, &fid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc != 0) { cERROR(1, ("Unable to open file to get ACL")); FreeXid(xid); return NULL; } } rc = CIFSSMBGetCIFSACL(xid, cifs_sb->tcon, fid, &pntsd, pacllen); cFYI(1, ("GetCIFSACL rc = %d ACL len %d", rc, *pacllen)); if (unlock_file == true) /* find_readable_file increments ref count */ atomic_dec(&open_file->wrtPending); else if (pfid == NULL) /* if opened above we have to close the handle */ CIFSSMBClose(xid, cifs_sb->tcon, fid); /* else handle was passed in by caller */ FreeXid(xid); return pntsd; }
static struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb, __u16 fid, u32 *pacllen) { struct cifs_ntsd *pntsd = NULL; int xid, rc; xid = GetXid(); rc = CIFSSMBGetCIFSACL(xid, cifs_sb->tcon, fid, &pntsd, pacllen); FreeXid(xid); cFYI(1, "GetCIFSACL rc = %d ACL len %d", rc, *pacllen); return pntsd; }
static struct cifs_ntsd *get_cifs_acl_by_path(struct cifs_sb_info *cifs_sb, const char *path, u32 *pacllen) { struct cifs_ntsd *pntsd = NULL; int oplock = 0; unsigned int xid; int rc, create_options = 0; struct cifs_tcon *tcon; struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); struct cifs_fid fid; struct cifs_open_parms oparms; if (IS_ERR(tlink)) return ERR_CAST(tlink); tcon = tlink_tcon(tlink); xid = get_xid(); if (backup_cred(cifs_sb)) create_options |= CREATE_OPEN_BACKUP_INTENT; oparms.tcon = tcon; oparms.cifs_sb = cifs_sb; oparms.desired_access = READ_CONTROL; oparms.share_access = FILE_SHARE_ALL; oparms.create_options = create_options; oparms.disposition = FILE_OPEN; oparms.path = path; oparms.fid = &fid; oparms.reconnect = false; rc = CIFS_open(xid, &oparms, &oplock, NULL); if (!rc) { rc = CIFSSMBGetCIFSACL(xid, tcon, fid.netfid, &pntsd, pacllen); CIFSSMBClose(xid, tcon, fid.netfid); } cifs_put_tlink(tlink); free_xid(xid); cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen); if (rc) return ERR_PTR(rc); return pntsd; }
static struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb, __u16 fid, u32 *pacllen) { struct cifs_ntsd *pntsd = NULL; int xid, rc; struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return ERR_CAST(tlink); xid = GetXid(); rc = CIFSSMBGetCIFSACL(xid, tlink_tcon(tlink), fid, &pntsd, pacllen); FreeXid(xid); cifs_put_tlink(tlink); cFYI(1, "%s: rc = %d ACL len %d", __func__, rc, *pacllen); if (rc) return ERR_PTR(rc); return pntsd; }
struct cifs_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifs_sb, const struct cifs_fid *cifsfid, u32 *pacllen) { struct cifs_ntsd *pntsd = NULL; unsigned int xid; int rc; struct tcon_link *tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return ERR_CAST(tlink); xid = get_xid(); rc = CIFSSMBGetCIFSACL(xid, tlink_tcon(tlink), cifsfid->netfid, &pntsd, pacllen); free_xid(xid); cifs_put_tlink(tlink); cifs_dbg(FYI, "%s: rc = %d ACL len %d\n", __func__, rc, *pacllen); if (rc) return ERR_PTR(rc); return pntsd; }
ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name, void *ea_value, size_t buf_size) { ssize_t rc = -EOPNOTSUPP; #ifdef CONFIG_CIFS_XATTR int xid; struct cifs_sb_info *cifs_sb; struct cifsTconInfo *pTcon; struct super_block *sb; char *full_path; if (direntry == NULL) return -EIO; if (direntry->d_inode == NULL) return -EIO; sb = direntry->d_inode->i_sb; if (sb == NULL) return -EIO; xid = GetXid(); cifs_sb = CIFS_SB(sb); pTcon = cifs_sb->tcon; full_path = build_path_from_dentry(direntry); if (full_path == NULL) { rc = -ENOMEM; FreeXid(xid); return rc; } /* return dos attributes as pseudo xattr */ /* return alt name if available as pseudo attr */ if (ea_name == NULL) { cFYI(1, "Null xattr names not supported"); } else if (strncmp(ea_name, CIFS_XATTR_USER_PREFIX, 5) == 0) { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) goto get_ea_exit; if (strncmp(ea_name, CIFS_XATTR_DOS_ATTRIB, 14) == 0) { cFYI(1, "attempt to query cifs inode metadata"); /* revalidate/getattr then populate from inode */ } /* BB add else when above is implemented */ ea_name += 5; /* skip past user. prefix */ rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value, buf_size, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } else if (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4) == 0) { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR) goto get_ea_exit; ea_name += 4; /* skip past os2. prefix */ rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value, buf_size, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } else if (strncmp(ea_name, POSIX_ACL_XATTR_ACCESS, strlen(POSIX_ACL_XATTR_ACCESS)) == 0) { #ifdef CONFIG_CIFS_POSIX if (sb->s_flags & MS_POSIXACL) rc = CIFSSMBGetPosixACL(xid, pTcon, full_path, ea_value, buf_size, ACL_TYPE_ACCESS, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); #ifdef CONFIG_CIFS_EXPERIMENTAL else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { __u16 fid; int oplock = 0; struct cifs_ntsd *pacl = NULL; __u32 buflen = 0; if (experimEnabled) rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, GENERIC_READ, FILE_SHARE_ALL, 0, &fid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); /* else rc is EOPNOTSUPP from above */ if (rc == 0) { rc = CIFSSMBGetCIFSACL(xid, pTcon, fid, &pacl, &buflen); CIFSSMBClose(xid, pTcon, fid); } } #endif /* EXPERIMENTAL */ #else cFYI(1, "query POSIX ACL not supported yet"); #endif /* CONFIG_CIFS_POSIX */ } else if (strncmp(ea_name, POSIX_ACL_XATTR_DEFAULT, strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) { #ifdef CONFIG_CIFS_POSIX if (sb->s_flags & MS_POSIXACL) rc = CIFSSMBGetPosixACL(xid, pTcon, full_path, ea_value, buf_size, ACL_TYPE_DEFAULT, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); #else cFYI(1, "query POSIX default ACL not supported yet"); #endif } else if (strncmp(ea_name, CIFS_XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) == 0) { cFYI(1, "Trusted xattr namespace not supported yet"); } else if (strncmp(ea_name, CIFS_XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) == 0) { cFYI(1, "Security xattr namespace not supported yet"); } else cFYI(1, "illegal xattr request %s (only user namespace supported)", ea_name); /* We could add an additional check for streams ie if proc/fs/cifs/streamstoxattr is set then search server for EAs or streams to returns as xattrs */ if (rc == -EINVAL) rc = -EOPNOTSUPP; get_ea_exit: kfree(full_path); FreeXid(xid); #endif return rc; }