/* Copyright (c) 2010 Gluster, Inc. This file is part of GlusterFS. GlusterFS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. GlusterFS 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #ifndef _CONFIG_H #define _CONFIG_H #include "config.h" #endif #include #include "xlator.h" #include "nfs3.h" #include "nfs3-fh.h" #include "msg-nfs3.h" #include "rbthash.h" #include "nfs-fops.h" #include "nfs-inodes.h" #include "nfs-generics.h" #include "nfs3-helpers.h" #include "nfs-mem-types.h" #include "iatt.h" #include #define nfs3_call_resume(cst) \ do { \ if (((cst)) && (cst)->resume_fn) \ (cst)->resume_fn (cst); \ } while (0) \ #define nfs3_call_resume_estale(csta) \ do { \ (csta)->resolve_ret = -1; \ (csta)->resolve_errno = ESTALE; \ nfs3_call_resume (csta); \ } while (0) \ struct nfs3stat_strerror { nfsstat3 stat; char strerror[100]; }; struct nfs3stat_strerror nfs3stat_strerror_table[] = { { NFS3_OK, "Call completed successfully." }, { NFS3ERR_PERM, "Not owner" }, { NFS3ERR_NOENT, "No such file or directory" }, { NFS3ERR_IO, "I/O error" }, { NFS3ERR_NXIO, "I/O error" }, { NFS3ERR_ACCES, "Permission denied" }, { NFS3ERR_EXIST, "File exists" }, { NFS3ERR_XDEV, "Attempt to do a cross-device hard link"}, { NFS3ERR_NODEV, "No such device" }, { NFS3ERR_NOTDIR, "Not a directory" }, { NFS3ERR_ISDIR, "Is a directory" }, { NFS3ERR_INVAL, "Invalid argument for operation" }, { NFS3ERR_FBIG, "File too large" }, { NFS3ERR_NOSPC, "No space left on device" }, { NFS3ERR_ROFS, "Read-only file system" }, { NFS3ERR_MLINK, "Too many hard links" }, { NFS3ERR_NAMETOOLONG, "Filename in operation was too long" }, { NFS3ERR_NOTEMPTY, "Directory not empty" }, { NFS3ERR_DQUOT, "Resource (quota) hard limit exceeded" }, { NFS3ERR_STALE, "Invalid file handle" }, { NFS3ERR_REMOTE, "Too many levels of remote in path" }, { NFS3ERR_BADHANDLE, "Illegal NFS file handle" }, { NFS3ERR_NOT_SYNC, "Update synchronization mismatch detected" }, { NFS3ERR_BAD_COOKIE, "READDIR or READDIRPLUS cookie is stale"}, { NFS3ERR_NOTSUPP, "Operation is not supported" }, { NFS3ERR_TOOSMALL, "Buffer or request is too small" }, { NFS3ERR_SERVERFAULT, "Error occurred on the server or IO Error" }, { NFS3ERR_BADTYPE, "Type not supported by the server" }, { NFS3ERR_JUKEBOX, "Cannot complete server initiated request" }, { -1, "IO Error" }, }; void nfs3_map_xlid_to_statdev (struct iatt *ia, uint16_t xlid) { if (!ia) return; ia->ia_dev = xlid; } struct nfs3_fh nfs3_extract_nfs3_fh (nfs_fh3 fh) { struct nfs3_fh gfh; memcpy (&gfh, fh.data.data_val, fh.data.data_len); return gfh; } struct nfs3_fh nfs3_extract_lookup_fh (lookup3args *args) { return nfs3_extract_nfs3_fh(args->what.dir); } char * nfs3_extract_lookup_name (lookup3args *args) { return args->what.name; } nfsstat3 nfs3_errno_to_nfsstat3 (int errnum) { nfsstat3 stat = NFS3_OK; switch (errnum) { case 0: stat = NFS3_OK; break; case EPERM: stat = NFS3ERR_PERM; break; case ENOENT: stat = NFS3ERR_NOENT; break; case EACCES: stat = NFS3ERR_ACCES; break; case EEXIST: stat = NFS3ERR_EXIST; break; case EXDEV: stat = NFS3ERR_XDEV; break; case ENODEV: stat = NFS3ERR_NODEV; break; case EIO: stat = NFS3ERR_IO; break; case ENXIO: stat = NFS3ERR_NXIO; break; case ENOTDIR: stat = NFS3ERR_NOTDIR; break; case EISDIR: stat = NFS3ERR_ISDIR; break; case EINVAL: stat = NFS3ERR_INVAL; break; case ENOSPC: stat = NFS3ERR_NOSPC; break; case EROFS: stat = NFS3ERR_ROFS; break; case EFBIG: stat = NFS3ERR_FBIG; break; case EMLINK: stat = NFS3ERR_MLINK; break; case ENAMETOOLONG: stat = NFS3ERR_NAMETOOLONG; break; case ENOTEMPTY: stat = NFS3ERR_NOTEMPTY; break; case EFAULT: stat = NFS3ERR_SERVERFAULT; break; case ENOSYS: stat = NFS3ERR_NOTSUPP; break; case EBADF: stat = NFS3ERR_BADTYPE; break; case ESTALE: stat = NFS3ERR_STALE; break; default: stat = NFS3ERR_SERVERFAULT; break; } return stat; } void nfs3_fill_lookup3res_error (lookup3res *res, nfsstat3 stat, struct iatt *dirstat) { memset (res, 0, sizeof (*res)); res->status = stat; if (!dirstat) { res->lookup3res_u.resfail.dir_attributes.attributes_follow = FALSE; } } fattr3 nfs3_stat_to_fattr3 (struct iatt *buf) { fattr3 fa = {0, }; if (IA_ISDIR (buf->ia_type)) fa.type = NF3DIR; else if (IA_ISREG (buf->ia_type)) fa.type = NF3REG; else if (IA_ISCHR (buf->ia_type)) fa.type = NF3CHR; else if (IA_ISBLK (buf->ia_type)) fa.type = NF3BLK; else if (IA_ISFIFO (buf->ia_type)) fa.type = NF3FIFO; else if (IA_ISLNK (buf->ia_type)) fa.type = NF3LNK; else if (IA_ISSOCK (buf->ia_type)) fa.type = NF3SOCK; if (IA_PROT_RUSR (buf->ia_prot)) fa.mode |= NFS3MODE_ROWNER; if (IA_PROT_WUSR (buf->ia_prot)) fa.mode |= NFS3MODE_WOWNER; if (IA_PROT_XUSR (buf->ia_prot)) fa.mode |= NFS3MODE_XOWNER; if (IA_PROT_RGRP (buf->ia_prot)) fa.mode |= NFS3MODE_RGROUP; if (IA_PROT_WGRP (buf->ia_prot)) fa.mode |= NFS3MODE_WGROUP; if (IA_PROT_XGRP (buf->ia_prot)) fa.mode |= NFS3MODE_XGROUP; if (IA_PROT_ROTH (buf->ia_prot)) fa.mode |= NFS3MODE_ROTHER; if (IA_PROT_WOTH (buf->ia_prot)) fa.mode |= NFS3MODE_WOTHER; if (IA_PROT_XOTH (buf->ia_prot)) fa.mode |= NFS3MODE_XOTHER; if (IA_PROT_SUID (buf->ia_prot)) fa.mode |= NFS3MODE_SETXUID; if (IA_PROT_SGID (buf->ia_prot)) fa.mode |= NFS3MODE_SETXGID; if (IA_PROT_STCKY (buf->ia_prot)) fa.mode |= NFS3MODE_SAVESWAPTXT; fa.nlink = buf->ia_nlink; fa.uid = buf->ia_uid; fa.gid = buf->ia_gid; fa.size = buf->ia_size; fa.used = (buf->ia_blocks * 512); if ((IA_ISCHR (buf->ia_type) || IA_ISBLK (buf->ia_type))) { fa.rdev.specdata1 = ia_major (buf->ia_rdev); fa.rdev.specdata2 = ia_minor (buf->ia_rdev); } else { fa.rdev.specdata1 = 0; fa.rdev.specdata2 = 0; } fa.fsid = buf->ia_dev; fa.fileid = buf->ia_ino; /* FIXME: Handle time resolutions for sub-second granularity */ if (buf->ia_atime == 9669) { fa.mtime.seconds = 0; fa.mtime.nseconds = 0; fa.atime.seconds = 0; fa.atime.nseconds = 0; } else { fa.mtime.seconds = buf->ia_mtime; fa.mtime.nseconds = 0; fa.atime.seconds = buf->ia_atime; fa.atime.seconds = 0; fa.atime.nseconds = 0; } fa.atime.seconds = buf->ia_atime; fa.atime.nseconds = 0; fa.ctime.seconds = buf->ia_ctime; fa.ctime.nseconds = 0; return fa; } post_op_attr nfs3_stat_to_post_op_attr (struct iatt *buf) { post_op_attr attr = {0, }; if (!buf) return attr; /* Some performance translators return zero-filled stats when they * do not have up-to-date attributes. Need to handle this by not * returning these zeroed out attrs. */ attr.attributes_follow = FALSE; if (nfs_zero_filled_stat (buf)) goto out; attr.post_op_attr_u.attributes = nfs3_stat_to_fattr3 (buf); attr.attributes_follow = TRUE; out: return attr; } pre_op_attr nfs3_stat_to_pre_op_attr (struct iatt *pre) { pre_op_attr poa = {0, }; /* Some performance translators return zero-filled stats when they * do not have up-to-date attributes. Need to handle this by not * returning these zeroed out attrs. */ poa.attributes_follow = FALSE; if (nfs_zero_filled_stat (pre)) goto out; poa.attributes_follow = TRUE; poa.pre_op_attr_u.attributes.size = pre->ia_size; if (pre->ia_atime == 9669) poa.pre_op_attr_u.attributes.mtime.seconds = 0; else poa.pre_op_attr_u.attributes.mtime.seconds = pre->ia_mtime; poa.pre_op_attr_u.attributes.ctime.seconds = pre->ia_ctime; out: return poa; } void nfs3_fill_lookup3res_success (lookup3res *res, nfsstat3 stat, struct nfs3_fh *fh, struct iatt *buf, struct iatt *postparent) { post_op_attr obj, dir; uint32_t fhlen = 0; res->status = stat; if (fh) { res->lookup3res_u.resok.object.data.data_val = (void *)fh; fhlen = nfs3_fh_compute_size (fh); res->lookup3res_u.resok.object.data.data_len = fhlen; } obj.attributes_follow = FALSE; dir.attributes_follow = FALSE; if (buf && fh) { nfs3_map_xlid_to_statdev (buf, fh->xlatorid); obj = nfs3_stat_to_post_op_attr (buf); } if (postparent && fh) { nfs3_map_xlid_to_statdev (postparent, fh->xlatorid); dir = nfs3_stat_to_post_op_attr (postparent); } res->lookup3res_u.resok.obj_attributes = obj; res->lookup3res_u.resok.dir_attributes = dir; } void nfs3_fill_lookup3res (lookup3res *res, nfsstat3 stat, struct nfs3_fh *newfh, struct iatt *buf, struct iatt *postparent) { memset (res, 0, sizeof (*res)); if (stat != NFS3_OK) nfs3_fill_lookup3res_error (res, stat, postparent); else nfs3_fill_lookup3res_success (res, stat, newfh, buf, postparent); } struct nfs3_fh nfs3_extract_getattr_fh (getattr3args *args) { return nfs3_extract_nfs3_fh(args->object); } void nfs3_fill_getattr3res (getattr3res *res, nfsstat3 stat, struct iatt *buf, uint16_t xlid) { memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (buf, xlid); res->getattr3res_u.resok.obj_attributes = nfs3_stat_to_fattr3 (buf); } struct nfs3_fh nfs3_extract_fsinfo_fh (fsinfo3args *args) { return nfs3_extract_nfs3_fh (args->fsroot); } void nfs3_fill_fsinfo3res (struct nfs3_state *nfs3, fsinfo3res *res, nfsstat3 status, struct iatt *fsroot, uint16_t xlid) { fsinfo3resok resok = {{0}, }; nfstime3 tdelta = GF_NFS3_TIMEDELTA_SECS; memset (res, 0, sizeof (*res)); res->status = status; if (status != NFS3_OK) return; nfs3_map_xlid_to_statdev (fsroot, xlid); resok.obj_attributes = nfs3_stat_to_post_op_attr (fsroot); resok.rtmax = nfs3->readsize; resok.rtpref = nfs3->readsize; resok.rtmult = GF_NFS3_RTMULT; resok.wtmax = nfs3->writesize; resok.wtpref = nfs3->writesize; resok.wtmult = GF_NFS3_WTMULT; resok.dtpref = nfs3->readdirsize; resok.maxfilesize = GF_NFS3_MAXFILE; resok.time_delta = tdelta; resok.properties = GF_NFS3_FS_PROP; res->fsinfo3res_u.resok = resok; } void nfs3_prep_lookup3args (lookup3args *args, struct nfs3_fh *fh, char *name) { memset (args, 0, sizeof (*args)); args->what.dir.data.data_val = (void *)fh; args->what.name = name; } void nfs3_prep_getattr3args (getattr3args *args, struct nfs3_fh *fh) { memset (args, 0, sizeof (*args)); args->object.data.data_val = (void *)fh; } void nfs3_prep_fsinfo3args (fsinfo3args *args, struct nfs3_fh *root) { memset (args, 0, sizeof (*args)); args->fsroot.data.data_val = (void *)root; } char * nfsstat3_strerror(int stat) { int i; for(i = 0; nfs3stat_strerror_table[i].stat != -1; i++) { if (nfs3stat_strerror_table[i].stat == stat) return nfs3stat_strerror_table[i].strerror; } return nfs3stat_strerror_table[i].strerror; } void nfs3_prep_access3args (access3args *args, struct nfs3_fh *fh) { memset (args, 0, sizeof (*args)); args->object.data.data_val = (void *)fh; } uint32_t nfs3_owner_accessbits (ia_prot_t prot, ia_type_t type, uint32_t request) { uint32_t accresult = 0; if (IA_PROT_RUSR (prot) && (request & ACCESS3_READ)) accresult |= ACCESS3_READ; if (request & ACCESS3_LOOKUP) if ((IA_ISDIR (type)) && (IA_PROT_XUSR (prot))) accresult |= ACCESS3_LOOKUP; if ((IA_PROT_WUSR (prot) && (request & ACCESS3_MODIFY))) accresult |= ACCESS3_MODIFY; if ((IA_PROT_WUSR (prot) && (request & ACCESS3_EXTEND))) accresult |= ACCESS3_EXTEND; /* ACCESS3_DELETE is ignored for now since that requires * knowing the permissions on the parent directory. */ if (request & ACCESS3_EXECUTE) if (IA_PROT_XUSR (prot) && (!IA_ISDIR (type))) accresult |= ACCESS3_EXECUTE; return accresult; } uint32_t nfs3_group_accessbits (ia_prot_t prot, ia_type_t type, uint32_t request) { uint32_t accresult = 0; if (IA_PROT_RGRP (prot) && (request & ACCESS3_READ)) accresult |= ACCESS3_READ; if (request & ACCESS3_LOOKUP) if ((IA_ISDIR (type)) && IA_PROT_RGRP (prot)) accresult |= ACCESS3_LOOKUP; if (IA_PROT_WGRP (prot) && (request & ACCESS3_MODIFY)) accresult |= ACCESS3_MODIFY; if (IA_PROT_WGRP (prot) && (request & ACCESS3_EXTEND)) accresult |= ACCESS3_EXTEND; /* ACCESS3_DELETE is ignored for now since that requires * knowing the permissions on the parent directory. */ if (request & ACCESS3_EXECUTE) if (IA_PROT_XGRP (prot) && (!IA_ISDIR (type))) accresult |= ACCESS3_EXECUTE; return accresult; } uint32_t nfs3_other_accessbits (ia_prot_t prot, ia_type_t type, uint32_t request) { uint32_t accresult = 0; if (IA_PROT_ROTH (prot) && (request & ACCESS3_READ)) accresult |= ACCESS3_READ; if (request & ACCESS3_LOOKUP) if (IA_ISDIR (type) && IA_PROT_ROTH (prot)) accresult |= ACCESS3_LOOKUP; if (IA_PROT_WOTH (prot) && (request & ACCESS3_MODIFY)) accresult |= ACCESS3_MODIFY; if (IA_PROT_WOTH (prot) && (request & ACCESS3_EXTEND)) accresult |= ACCESS3_EXTEND; /* ACCESS3_DELETE is ignored for now since that requires * knowing the permissions on the parent directory. */ if (request & ACCESS3_EXECUTE) if (IA_PROT_XOTH (prot) && (!IA_ISDIR (type))) accresult |= ACCESS3_EXECUTE; return accresult; } uint32_t nfs3_superuser_accessbits (ia_prot_t prot, ia_type_t type, uint32_t request) { uint32_t accresult = 0; if (request & ACCESS3_READ) accresult |= ACCESS3_READ; if (request & ACCESS3_LOOKUP) if (IA_ISDIR (type)) accresult |= ACCESS3_LOOKUP; if (request & ACCESS3_MODIFY) accresult |= ACCESS3_MODIFY; if (request & ACCESS3_EXTEND) accresult |= ACCESS3_EXTEND; /* ACCESS3_DELETE is ignored for now since that requires * knowing the permissions on the parent directory. */ if (request & ACCESS3_EXECUTE) if ((IA_PROT_XOTH (prot) || IA_PROT_XUSR (prot) || IA_PROT_XGRP (prot)) && (!IA_ISDIR (type))) accresult |= ACCESS3_EXECUTE; return accresult; } uint32_t nfs3_stat_to_accessbits (struct iatt *buf, uint32_t request, uid_t uid, gid_t gid) { uint32_t accresult = 0; ia_prot_t prot = {0, }; ia_type_t type = 0; prot = buf->ia_prot; type = buf->ia_type; if (uid == 0) accresult = nfs3_superuser_accessbits (prot, type, request); else if (buf->ia_uid == uid) accresult = nfs3_owner_accessbits (prot, type, request); else if (buf->ia_gid == gid) accresult = nfs3_group_accessbits (prot, type, request); else accresult = nfs3_other_accessbits (prot, type, request); return accresult; } void nfs3_fill_access3res (access3res *res, nfsstat3 status, struct iatt *buf, uint32_t accbits, uid_t uid, gid_t gid, uint16_t xlid) { post_op_attr objattr; uint32_t accres = 0; memset (res, 0, sizeof (*res)); res->status = status; if (status != NFS3_OK) return; nfs3_map_xlid_to_statdev (buf, xlid); objattr = nfs3_stat_to_post_op_attr (buf); accres = nfs3_stat_to_accessbits (buf, accbits, uid, gid); res->access3res_u.resok.obj_attributes = objattr; res->access3res_u.resok.access = accres; } void nfs3_prep_readdir3args (readdir3args *ra, struct nfs3_fh *fh) { memset (ra, 0, sizeof (*ra)); ra->dir.data.data_val = (void *)fh; } int nfs3_is_dot_entry (char *entry) { int ret = 0; if (!entry) return 0; if (strcmp (entry, ".") == 0) ret = 1; return ret; } int nfs3_is_parentdir_entry (char *entry) { int ret = 0; if (!entry) return 0; if (strcmp (entry, "..") == 0) ret = 1; return ret; } void nfs3_funge_root_dotdot_dirent (gf_dirent_t *ent, struct nfs3_fh *dfh) { if ((!ent) || (!dfh)) return; if (nfs3_fh_is_root_fh (dfh) && nfs3_is_parentdir_entry (ent->d_name)) { ent->d_ino = 1; ent->d_stat.ia_ino = 1; ent->d_stat.ia_gen = 0; } if (nfs3_fh_is_root_fh (dfh) && nfs3_is_dot_entry (ent->d_name)) { ent->d_ino = 1; ent->d_stat.ia_ino = 1; ent->d_stat.ia_gen = 0; } } entry3 * nfs3_fill_entry3 (gf_dirent_t *entry, struct nfs3_fh *dfh) { entry3 *ent = NULL; if ((!entry) || (!dfh)) return NULL; ent = GF_CALLOC (1, sizeof (*ent), gf_nfs_mt_entry3); if (!ent) return NULL; gf_log (GF_NFS3, GF_LOG_TRACE, "Entry: %s", entry->d_name); /* If the entry is . or .., we need to replace the physical ino and gen * with 1 and 0 respectively if the directory is root. This funging is * needed because there is no parent directory of the root. In that * sense the behavious we provide is similar to the output of the * command: "stat /.." */ nfs3_funge_root_dotdot_dirent (entry, dfh); ent->fileid = entry->d_ino; ent->cookie = entry->d_off; ent->name = GF_CALLOC ((strlen (entry->d_name) + 1), sizeof (char), gf_nfs_mt_char); if (!ent->name) { GF_FREE (ent); ent = NULL; goto err; } strcpy (ent->name, entry->d_name); err: return ent; } void nfs3_fill_post_op_fh3 (struct nfs3_fh *fh, post_op_fh3 *pfh) { uint32_t fhlen = 0; if ((!fh) || (!pfh)) return; pfh->handle_follows = 1; fhlen = nfs3_fh_compute_size (fh); pfh->post_op_fh3_u.handle.data.data_val = (void *)fh; pfh->post_op_fh3_u.handle.data.data_len = fhlen; } post_op_fh3 nfs3_fh_to_post_op_fh3 (struct nfs3_fh *fh) { post_op_fh3 pfh = {0, }; char *fhp = NULL; if (!fh) return pfh; pfh.handle_follows = 1; fhp = GF_CALLOC (1, sizeof (*fh), gf_nfs_mt_char); if (!fhp) return pfh; memcpy (fhp, fh, sizeof (*fh)); nfs3_fill_post_op_fh3 ((struct nfs3_fh *)fhp, &pfh); return pfh; } entryp3 * nfs3_fill_entryp3 (gf_dirent_t *entry, struct nfs3_fh *dirfh) { entryp3 *ent = NULL; struct nfs3_fh newfh = {{0}, }; if ((!entry) || (!dirfh)) return NULL; /* If the entry is . or .., we need to replace the physical ino and gen * with 1 and 0 respectively if the directory is root. This funging is * needed because there is no parent directory of the root. In that * sense the behavious we provide is similar to the output of the * command: "stat /.." */ nfs3_funge_root_dotdot_dirent (entry, dirfh); gf_log (GF_NFS3, GF_LOG_TRACE, "Entry: %s, ino: %"PRIu64, entry->d_name, entry->d_ino); ent = GF_CALLOC (1, sizeof (*ent), gf_nfs_mt_entryp3); if (!ent) return NULL; ent->fileid = entry->d_ino; ent->cookie = entry->d_off; ent->name = GF_CALLOC ((strlen (entry->d_name) + 1), sizeof (char), gf_nfs_mt_char); if (!ent->name) { GF_FREE (ent); ent = NULL; goto err; } strcpy (ent->name, entry->d_name); nfs3_fh_build_child_fh (dirfh, &entry->d_stat, &newfh); nfs3_map_xlid_to_statdev (&entry->d_stat, dirfh->xlatorid); ent->name_attributes = nfs3_stat_to_post_op_attr (&entry->d_stat); ent->name_handle = nfs3_fh_to_post_op_fh3 (&newfh); err: return ent; } void nfs3_fill_readdir3res (readdir3res *res, nfsstat3 stat, struct nfs3_fh *dirfh, uint64_t cverf, struct iatt *dirstat, gf_dirent_t *entries, count3 count, int is_eof) { post_op_attr dirattr; entry3 *ent = NULL; entry3 *headentry = NULL; entry3 *preventry = NULL; count3 filled = 0; gf_dirent_t *listhead = NULL; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (dirstat, dirfh->xlatorid); dirattr = nfs3_stat_to_post_op_attr (dirstat); res->readdir3res_u.resok.dir_attributes = dirattr; res->readdir3res_u.resok.reply.eof = (bool_t)is_eof; memcpy (res->readdir3res_u.resok.cookieverf, &cverf, sizeof (cverf)); filled = NFS3_READDIR_RESOK_SIZE; /* First entry is just the list head */ listhead = entries; entries = entries->next; while (((entries) && (entries != listhead)) && (filled < count)) { /* if ((strcmp (entries->d_name, ".") == 0) || (strcmp (entries->d_name, "..") == 0)) goto nextentry; */ ent = nfs3_fill_entry3 (entries, dirfh); if (!ent) break; if (!headentry) headentry = ent; if (preventry) { preventry->nextentry = ent; preventry = ent; } else preventry = ent; filled += NFS3_ENTRY3_FIXED_SIZE + strlen (ent->name); //nextentry: entries = entries->next; } res->readdir3res_u.resok.reply.entries = headentry; return; } void nfs3_fill_readdirp3res (readdirp3res *res, nfsstat3 stat, struct nfs3_fh *dirfh, uint64_t cverf, struct iatt *dirstat, gf_dirent_t *entries, count3 dircount, count3 maxcount, int is_eof) { post_op_attr dirattr; entryp3 *ent = NULL; entryp3 *headentry = NULL; entryp3 *preventry = NULL; count3 filled = 0; gf_dirent_t *listhead = NULL; int fhlen = 0; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (dirstat, dirfh->xlatorid); dirattr = nfs3_stat_to_post_op_attr (dirstat); res->readdirp3res_u.resok.dir_attributes = dirattr; res->readdirp3res_u.resok.reply.eof = (bool_t)is_eof; memcpy (res->readdirp3res_u.resok.cookieverf, &cverf, sizeof (cverf)); filled = NFS3_READDIR_RESOK_SIZE; /* First entry is just the list head */ listhead = entries; entries = entries->next; while (((entries) && (entries != listhead)) && (filled < maxcount)) { /* Linux does not display . and .. entries unless we provide * these entries here. */ /* if ((strcmp (entries->d_name, ".") == 0) || (strcmp (entries->d_name, "..") == 0)) goto nextentry; */ ent = nfs3_fill_entryp3 (entries, dirfh); if (!ent) break; if (!headentry) headentry = ent; if (preventry) { preventry->nextentry = ent; preventry = ent; } else preventry = ent; fhlen = ent->name_handle.post_op_fh3_u.handle.data.data_len; filled += NFS3_ENTRYP3_FIXED_SIZE + fhlen + strlen (ent->name); //nextentry: entries = entries->next; } res->readdirp3res_u.resok.reply.entries = headentry; return; } void nfs3_prep_readdirp3args (readdirp3args *ra, struct nfs3_fh *fh) { memset (ra, 0, sizeof (*ra)); ra->dir.data.data_val = (void *)fh; } void nfs3_free_readdirp3res (readdirp3res *res) { entryp3 *ent = NULL; entryp3 *next = NULL; if (!res) return; ent = res->readdirp3res_u.resok.reply.entries; while (ent) { next = ent->nextentry; GF_FREE (ent->name); GF_FREE (ent->name_handle.post_op_fh3_u.handle.data.data_val); GF_FREE (ent); ent = next; } return; } void nfs3_free_readdir3res (readdir3res *res) { entry3 *ent = NULL; entry3 *next = NULL; if (!res) return; ent = res->readdir3res_u.resok.reply.entries; while (ent) { next = ent->nextentry; GF_FREE (ent->name); GF_FREE (ent); ent = next; } return; } void nfs3_prep_fsstat3args (fsstat3args *args, struct nfs3_fh *fh) { memset (args, 0, sizeof (*args)); args->fsroot.data.data_val = (char *)fh; } void nfs3_fill_fsstat3res (fsstat3res *res, nfsstat3 stat, struct statvfs *fsbuf, struct iatt *postbuf, uint16_t xlid) { post_op_attr poa; fsstat3resok resok; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (postbuf, xlid); poa = nfs3_stat_to_post_op_attr (postbuf); resok.tbytes = (size3)(fsbuf->f_frsize * fsbuf->f_blocks); resok.fbytes = (size3)(fsbuf->f_bsize * fsbuf->f_bfree); resok.abytes = (size3)(fsbuf->f_bsize * fsbuf->f_bavail); resok.tfiles = (size3)(fsbuf->f_files); resok.ffiles = (size3)(fsbuf->f_ffree); resok.afiles = (size3)(fsbuf->f_favail); resok.invarsec = 0; resok.obj_attributes = poa; res->fsstat3res_u.resok = resok; } int32_t nfs3_sattr3_to_setattr_valid (sattr3 *sattr, struct iatt *buf, mode_t *omode) { int32_t valid = 0; ia_prot_t prot = {0, }; mode_t mode = 0; if (!sattr) return 0; if (sattr->mode.set_it) { valid |= GF_SET_ATTR_MODE; if (sattr->mode.set_mode3_u.mode & NFS3MODE_ROWNER) { mode |= S_IRUSR; prot.owner.read = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_WOWNER) { mode |= S_IWUSR; prot.owner.write = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_XOWNER) { mode |= S_IXUSR; prot.owner.exec = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_RGROUP) { mode |= S_IRGRP; prot.group.read = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_WGROUP) { mode |= S_IWGRP; prot.group.write = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_XGROUP) { mode |= S_IXGRP; prot.group.exec = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_ROTHER) { mode |= S_IROTH; prot.other.read = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_WOTHER) { mode |= S_IWOTH; prot.other.write = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_XOTHER) { mode |= S_IXOTH; prot.other.exec = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_SETXUID) { mode |= S_ISUID; prot.suid = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_SETXGID) { mode |= S_ISGID; prot.sgid = 1; } if (sattr->mode.set_mode3_u.mode & NFS3MODE_SAVESWAPTXT) { mode |= S_ISVTX; prot.sticky = 1; } if (buf) buf->ia_prot = prot; /* Create fop still requires the old mode_t style argument. */ if (omode) *omode = mode; } if (sattr->uid.set_it) { valid |= GF_SET_ATTR_UID; if (buf) buf->ia_uid = sattr->uid.set_uid3_u.uid; } if (sattr->gid.set_it) { valid |= GF_SET_ATTR_GID; if (buf) buf->ia_gid = sattr->gid.set_gid3_u.gid; } if (sattr->size.set_it) { valid |= GF_SET_ATTR_SIZE; if (buf) buf->ia_size = sattr->size.set_size3_u.size; } if (sattr->atime.set_it == SET_TO_CLIENT_TIME) { valid |= GF_SET_ATTR_ATIME; if (buf) buf->ia_atime = sattr->atime.set_atime_u.atime.seconds; } if (sattr->atime.set_it == SET_TO_SERVER_TIME) { valid |= GF_SET_ATTR_ATIME; if (buf) buf->ia_atime = time (NULL); } if (sattr->mtime.set_it == SET_TO_CLIENT_TIME) { valid |= GF_SET_ATTR_MTIME; if (buf) buf->ia_mtime = sattr->mtime.set_mtime_u.mtime.seconds; } if (sattr->mtime.set_it == SET_TO_SERVER_TIME) { valid |= GF_SET_ATTR_MTIME; if (buf) buf->ia_mtime = time (NULL); } return valid; } wcc_data nfs3_stat_to_wcc_data (struct iatt *pre, struct iatt *post) { wcc_data wd = {{0}, }; if (post) wd.after = nfs3_stat_to_post_op_attr (post); if (pre) wd.before = nfs3_stat_to_pre_op_attr (pre); return wd; } void nfs3_fill_create3res (create3res *res, nfsstat3 stat, struct nfs3_fh *newfh, struct iatt *newbuf, struct iatt *preparent, struct iatt *postparent) { post_op_attr poa = {0, }; wcc_data dirwcc = {{0}, }; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_fill_post_op_fh3 (newfh, &res->create3res_u.resok.obj); nfs3_map_xlid_to_statdev (newbuf, newfh->xlatorid); poa = nfs3_stat_to_post_op_attr (newbuf); res->create3res_u.resok.obj_attributes = poa; if (preparent) { nfs3_map_xlid_to_statdev (preparent, newfh->xlatorid); nfs3_map_xlid_to_statdev (postparent, newfh->xlatorid); dirwcc = nfs3_stat_to_wcc_data (preparent, postparent); } res->create3res_u.resok.dir_wcc = dirwcc; } void nfs3_prep_create3args (create3args *args, struct nfs3_fh *fh, char *name) { memset (args, 0, sizeof (*args)); args->where.dir.data.data_val = (void *)fh; args->where.name = name; } void nfs3_prep_setattr3args (setattr3args *args, struct nfs3_fh *fh) { memset (args, 0, sizeof (*args)); args->object.data.data_val = (void *)fh; } void nfs3_fill_setattr3res (setattr3res *res, nfsstat3 stat, struct iatt *preop, struct iatt *postop, uint16_t xlid) { wcc_data wcc; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (preop, xlid); nfs3_map_xlid_to_statdev (postop, xlid); wcc = nfs3_stat_to_wcc_data (preop, postop); res->setattr3res_u.resok.obj_wcc = wcc; } void nfs3_prep_mkdir3args (mkdir3args *args, struct nfs3_fh *dirfh, char *name) { memset (args, 0, sizeof (*args)); args->where.dir.data.data_val = (void *)dirfh; args->where.name = name; } void nfs3_fill_mkdir3res (mkdir3res *res, nfsstat3 stat, struct nfs3_fh *fh, struct iatt *buf, struct iatt *preparent, struct iatt *postparent) { wcc_data dirwcc; post_op_attr poa; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_fill_post_op_fh3 (fh, &res->mkdir3res_u.resok.obj); nfs3_map_xlid_to_statdev (buf, fh->xlatorid); poa = nfs3_stat_to_post_op_attr (buf); nfs3_map_xlid_to_statdev (preparent, fh->xlatorid); nfs3_map_xlid_to_statdev (postparent, fh->xlatorid); dirwcc = nfs3_stat_to_wcc_data (preparent, postparent); res->mkdir3res_u.resok.obj_attributes = poa; res->mkdir3res_u.resok.dir_wcc = dirwcc; } void nfs3_prep_symlink3args (symlink3args *args, struct nfs3_fh *dirfh, char *name, char *target) { memset (args, 0, sizeof (*args)); args->where.dir.data.data_val = (void *)dirfh; args->where.name = name; args->symlink.symlink_data = target; } void nfs3_fill_symlink3res (symlink3res *res, nfsstat3 stat, struct nfs3_fh *fh, struct iatt *buf, struct iatt *preparent, struct iatt *postparent) { wcc_data dirwcc; post_op_attr poa; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_fill_post_op_fh3 (fh, &res->symlink3res_u.resok.obj); nfs3_map_xlid_to_statdev (buf, fh->xlatorid); poa = nfs3_stat_to_post_op_attr (buf); nfs3_map_xlid_to_statdev (postparent, fh->xlatorid); nfs3_map_xlid_to_statdev (preparent, fh->xlatorid); dirwcc = nfs3_stat_to_wcc_data (preparent, postparent); res->symlink3res_u.resok.obj_attributes = poa; res->symlink3res_u.resok.dir_wcc = dirwcc; } void nfs3_prep_readlink3args (readlink3args *args, struct nfs3_fh *fh) { memset (args, 0, sizeof (*args)); args->symlink.data.data_val = (void *)fh; } void nfs3_fill_readlink3res (readlink3res *res, nfsstat3 stat, char *path, struct iatt *buf, uint16_t xlid) { post_op_attr poa; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (buf, xlid); poa = nfs3_stat_to_post_op_attr (buf); res->readlink3res_u.resok.data = (void *)path; res->readlink3res_u.resok.symlink_attributes = poa; } void nfs3_prep_mknod3args (mknod3args *args, struct nfs3_fh *fh, char *name) { memset (args, 0, sizeof (*args)); args->where.dir.data.data_val = (void *)fh; args->where.name = name; } void nfs3_fill_mknod3res (mknod3res *res, nfsstat3 stat, struct nfs3_fh *fh, struct iatt *buf, struct iatt *preparent, struct iatt *postparent) { post_op_attr poa; wcc_data wccdir; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_fill_post_op_fh3 (fh, &res->mknod3res_u.resok.obj); nfs3_map_xlid_to_statdev (buf, fh->xlatorid); poa = nfs3_stat_to_post_op_attr (buf); nfs3_map_xlid_to_statdev (preparent, fh->xlatorid); nfs3_map_xlid_to_statdev (postparent, fh->xlatorid); wccdir = nfs3_stat_to_wcc_data (preparent, postparent); res->mknod3res_u.resok.obj_attributes = poa; res->mknod3res_u.resok.dir_wcc = wccdir; } void nfs3_fill_remove3res (remove3res *res, nfsstat3 stat, struct iatt *preparent, struct iatt *postparent, uint16_t xlid) { wcc_data dirwcc; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (preparent, xlid); nfs3_map_xlid_to_statdev (postparent, xlid); dirwcc = nfs3_stat_to_wcc_data (preparent, postparent); res->remove3res_u.resok.dir_wcc = dirwcc; } void nfs3_prep_remove3args (remove3args *args, struct nfs3_fh *fh, char *name) { memset (args, 0, sizeof (*args)); args->object.dir.data.data_val = (void *)fh; args->object.name = name; } void nfs3_prep_rmdir3args (rmdir3args *args, struct nfs3_fh *fh, char *name) { memset (args, 0, sizeof (*args)); args->object.dir.data.data_val = (void *)fh; args->object.name = name; } void nfs3_fill_rmdir3res (rmdir3res *res, nfsstat3 stat, struct iatt *preparent, struct iatt *postparent, uint16_t xlid) { wcc_data dirwcc; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (postparent, xlid); nfs3_map_xlid_to_statdev (preparent, xlid); dirwcc = nfs3_stat_to_wcc_data (preparent, postparent); res->rmdir3res_u.resok.dir_wcc = dirwcc; } void nfs3_prep_link3args (link3args *args, struct nfs3_fh *target, struct nfs3_fh * dirfh, char *name) { memset (args, 0, sizeof (*args)); args->file.data.data_val = (void *)target; args->link.dir.data.data_val = (void *)dirfh; args->link.name = name; } void nfs3_fill_link3res (link3res *res, nfsstat3 stat, struct iatt *buf, struct iatt *preparent, struct iatt *postparent, uint16_t xlid) { post_op_attr poa; wcc_data dirwcc; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (preparent, xlid); nfs3_map_xlid_to_statdev (postparent, xlid); nfs3_map_xlid_to_statdev (buf, xlid); poa = nfs3_stat_to_post_op_attr (buf); dirwcc = nfs3_stat_to_wcc_data (preparent, postparent); res->link3res_u.resok.file_attributes = poa; res->link3res_u.resok.linkdir_wcc = dirwcc; } void nfs3_prep_rename3args (rename3args *args, struct nfs3_fh *olddirfh, char *oldname, struct nfs3_fh *newdirfh, char *newname) { memset (args, 0, sizeof (*args)); args->from.name = oldname; args->from.dir.data.data_val = (void *)olddirfh; args->to.name = newname; args->to.dir.data.data_val = (void *)newdirfh; } void nfs3_fill_rename3res (rename3res *res, nfsstat3 stat, struct iatt *buf, struct iatt *preoldparent, struct iatt *postoldparent, struct iatt *prenewparent, struct iatt *postnewparent, uint16_t xlid) { wcc_data dirwcc; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (preoldparent, xlid); nfs3_map_xlid_to_statdev (postoldparent, xlid); nfs3_map_xlid_to_statdev (prenewparent, xlid); nfs3_map_xlid_to_statdev (postnewparent, xlid); nfs3_map_xlid_to_statdev (buf, xlid); dirwcc = nfs3_stat_to_wcc_data (preoldparent, postoldparent); res->rename3res_u.resok.fromdir_wcc = dirwcc; dirwcc = nfs3_stat_to_wcc_data (prenewparent, postnewparent); res->rename3res_u.resok.todir_wcc = dirwcc; } void nfs3_prep_write3args (write3args *args, struct nfs3_fh *fh) { memset (args, 0, sizeof (*args)); args->file.data.data_val = (void *)fh; } void nfs3_fill_write3res (write3res *res, nfsstat3 stat, count3 count, stable_how stable, uint64_t wverf, struct iatt *prestat, struct iatt *poststat, uint16_t xlid) { write3resok resok; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (prestat, xlid); nfs3_map_xlid_to_statdev (poststat, xlid); resok.file_wcc = nfs3_stat_to_wcc_data (prestat, poststat); resok.count = count; resok.committed = stable; memcpy (resok.verf, &wverf, sizeof (wverf)); res->write3res_u.resok = resok; } void nfs3_prep_commit3args (commit3args *args, struct nfs3_fh *fh) { memset (args, 0, sizeof (*args)); args->file.data.data_val = (void *)fh; } void nfs3_fill_commit3res (commit3res *res, nfsstat3 stat, uint64_t wverf, struct iatt *prestat, struct iatt *poststat,uint16_t xlid) { memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (poststat, xlid); nfs3_map_xlid_to_statdev (prestat, xlid); res->commit3res_u.resok.file_wcc = nfs3_stat_to_wcc_data (prestat, poststat); memcpy (res->commit3res_u.resok.verf, &wverf, sizeof (wverf)); } void nfs3_fill_read3res (read3res *res, nfsstat3 stat, count3 count, struct iatt *poststat, int is_eof, uint16_t xlid) { post_op_attr poa; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (poststat, xlid); poa = nfs3_stat_to_post_op_attr (poststat); res->read3res_u.resok.file_attributes = poa; res->read3res_u.resok.count = count; res->read3res_u.resok.eof = is_eof; res->read3res_u.resok.data.data_len = count; } void nfs3_prep_read3args (read3args *args, struct nfs3_fh *fh) { memset (args, 0, sizeof (*args)); args->file.data.data_val = (void *)fh; } void nfs3_fill_pathconf3res (pathconf3res *res, nfsstat3 stat, struct iatt *buf, uint16_t xlid) { pathconf3resok resok; memset (res, 0, sizeof (*res)); res->status = stat; if (stat != NFS3_OK) return; nfs3_map_xlid_to_statdev (buf, xlid); resok.obj_attributes = nfs3_stat_to_post_op_attr (buf); resok.linkmax = 256; resok.name_max = NFS_NAME_MAX; resok.no_trunc = TRUE; resok.chown_restricted = FALSE; resok.case_insensitive = FALSE; resok.case_preserving = TRUE; res->pathconf3res_u.resok = resok; } void nfs3_prep_pathconf3args (pathconf3args *args, struct nfs3_fh *fh) { memset (args, 0, sizeof (*args)); args->object.data.data_val = (void *)fh; } int nfs3_verify_dircookie (struct nfs3_state *nfs3, fd_t *dirfd, cookie3 cookie, uint64_t cverf, nfsstat3 *stat) { int ret = -1; if ((!nfs3) || (!dirfd)) return -1; /* Can assume that this is first read on the dir, so cookie check * is successful by default. */ if (cookie == 0) return 0; gf_log (GF_NFS3, GF_LOG_TRACE, "Verifying cookie: cverf: %"PRIu64 ", cookie: %"PRIu64, cverf, cookie); /* The cookie bad, no way cverf will be zero with a non-zero cookie. */ if ((cverf == 0) && (cookie != 0)) { gf_log (GF_NFS3, GF_LOG_TRACE, "Bad cookie requested"); if (stat) *stat = NFS3ERR_BAD_COOKIE; goto err; } /* Yes, its true, our cookie is simply the fd_t address. * NOTE: We used have the check for cookieverf but VMWare client sends * a readdirp requests even after we've told it that EOF has been * reached on the directory. This causes a problem because we close a * dir fd_t after reaching EOF. The next readdirp sent by VMWare * contains the address of the closed fd_t as cookieverf. Since we * closed that fd_t, this readdirp results in a new opendir which will * give an fd_t that will fail this check below. */ /* if ((cverf != (uint64_t)dirfd)) { gf_log (GF_NFS3, GF_LOG_TRACE, "Cookieverf does not match"); if (stat) *stat = NFS3ERR_BAD_COOKIE; goto err; } */ gf_log (GF_NFS3, GF_LOG_TRACE, "Cookie verified"); if (stat) *stat = NFS3_OK; ret = 0; err: return ret; } /* When remove a file, we need to unref the cached fd for an inode but this * needs to happen only when the file was in fact opened. However, it is * possible that fd_lookup on a file returns an fd because the file was in * process of being created(which also returns an fd) but since this fd was not * opened through this path, in the NFS3 remove path, we'll end up removing the * reference that belongs to someone else. That means, nfs3 remove path should * not unref unless it is sure that the file was cached open also. If it was, * only then perform the fd_unref, else not. * * We determine that using a flag in the inode context. */ int nfs3_set_inode_opened (xlator_t *nfsxl, inode_t *inode) { if ((!nfsxl) || (!inode)) return -1; inode_ctx_put (inode, nfsxl, GF_NFS3_FD_CACHED); return 0; } /* Returns 1 if inode was cached open, otherwise 0 */ int nfs3_cached_inode_opened (xlator_t *nfsxl, inode_t *inode) { int ret = -1; uint64_t cflag = 0; if ((!nfsxl) || (!inode)) return -1; ret = inode_ctx_get (inode, nfsxl, &cflag); if (ret == -1) ret = 0; else if (cflag == GF_NFS3_FD_CACHED) ret = 1; return ret; } int32_t nfs3_dir_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, fd_t *fd) { nfs3_call_state_t *cs = NULL; cs = frame->local; if (op_ret == -1) { cs->resolve_ret = -1; cs->resolve_errno = op_errno; nfs3_call_resume (cs); goto err; } cs->fd = fd_ref (fd); nfs3_set_inode_opened (cs->nfsx, cs->resolvedloc.inode); gf_log (GF_NFS3, GF_LOG_TRACE, "FD_REF: %d", fd->refcount); nfs3_call_resume (cs); err: return 0; } int __nfs3_dir_open_and_resume (nfs3_call_state_t *cs) { nfs_user_t nfu = {0, }; int ret = -EFAULT; if (!cs) return ret; nfs_user_root_create (&nfu); ret = nfs_opendir (cs->nfsx, cs->vol, &nfu, &cs->resolvedloc, nfs3_dir_open_cbk, cs); return ret; } int nfs3_dir_open_and_resume (nfs3_call_state_t *cs, nfs3_resume_fn_t resume) { fd_t *fd = NULL; int ret = -EFAULT; if ((!cs)) return ret; cs->resume_fn = resume; gf_log (GF_NFS3, GF_LOG_TRACE, "Opening: %s", cs->resolvedloc.path); fd = fd_lookup (cs->resolvedloc.inode, 0); if (fd) { gf_log (GF_NFS3, GF_LOG_TRACE, "fd found in state: ref: %d", fd->refcount); cs->fd = fd; /* Gets unrefd when the call state is wiped. */ cs->resolve_ret = 0; nfs3_call_resume (cs); ret = 0; goto err; } ret = __nfs3_dir_open_and_resume (cs); err: return ret; } int nfs3_flush_call_state (nfs3_call_state_t *cs, fd_t *openedfd) { if ((!cs) || (!openedfd)) return -1; gf_log (GF_NFS3, GF_LOG_TRACE, "Calling resume"); cs->resolve_ret = 0; gf_log (GF_NFS3, GF_LOG_TRACE, "Opening uncached fd done: %d", openedfd->refcount); cs->fd = fd_ref (openedfd); list_del (&cs->openwait_q); nfs3_call_resume (cs); return 0; } int nfs3_flush_inode_queue (struct inode_op_queue *inode_q, fd_t *openedfd) { nfs3_call_state_t *cstmp = NULL; nfs3_call_state_t *cs = NULL; if ((!openedfd) || (!inode_q)) return -1; list_for_each_entry_safe (cs, cstmp, &inode_q->opq, openwait_q) nfs3_flush_call_state (cs, openedfd); return 0; } int nfs3_flush_open_wait_call_states (nfs3_call_state_t *cs, fd_t *openedfd) { struct inode_op_queue *inode_q = NULL; uint64_t ctxaddr = 0; int ret = 0; if (!cs) return -1; gf_log (GF_NFS3, GF_LOG_TRACE, "Flushing call state"); ret = inode_ctx_get (cs->resolvedloc.inode, cs->nfsx, &ctxaddr); if (ret == -1) { gf_log (GF_NFS3, GF_LOG_TRACE, "No inode queue present"); goto out; } inode_q = (struct inode_op_queue *)(long)ctxaddr; if (!inode_q) goto out; pthread_mutex_lock (&inode_q->qlock); { nfs3_flush_inode_queue (inode_q, openedfd); } pthread_mutex_unlock (&inode_q->qlock); out: return 0; } int __nfs3_fdcache_update_entry (struct nfs3_state *nfs3, fd_t *fd) { uint64_t ctxaddr = 0; struct nfs3_fd_entry *fde = NULL; if ((!nfs3) || (!fd)) return -1; gf_log (GF_NFS3, GF_LOG_TRACE, "Updating fd: 0x%lx", (long int)fd); fd_ctx_get (fd, nfs3->nfsx, &ctxaddr); fde = (struct nfs3_fd_entry *)(long)ctxaddr; if (fde) { list_del (&fde->list); list_add_tail (&fde->list, &nfs3->fdlru); } return 0; } int nfs3_fdcache_update (struct nfs3_state *nfs3, fd_t *fd) { if ((!nfs3) || (!fd)) return -1; LOCK (&nfs3->fdlrulock); { __nfs3_fdcache_update_entry (nfs3, fd); } UNLOCK (&nfs3->fdlrulock); return 0; } int __nfs3_fdcache_remove_entry (struct nfs3_state *nfs3, struct nfs3_fd_entry *fde) { if ((!fde) || (!nfs3)) return 0; gf_log (GF_NFS3, GF_LOG_TRACE, "Removing fd: 0x%lx: %d", (long int)fde->cachedfd, fde->cachedfd->refcount); list_del (&fde->list); fd_ctx_del (fde->cachedfd, nfs3->nfsx, NULL); fd_unref (fde->cachedfd); GF_FREE (fde); --nfs3->fdcount; return 0; } int nfs3_fdcache_remove (struct nfs3_state *nfs3, fd_t *fd) { struct nfs3_fd_entry *fde = NULL; uint64_t ctxaddr = 0; if ((!nfs3) || (!fd)) return -1; LOCK (&nfs3->fdlrulock); { fd_ctx_get (fd, nfs3->nfsx, &ctxaddr); fde = (struct nfs3_fd_entry *)(long)ctxaddr; __nfs3_fdcache_remove_entry (nfs3, fde); } UNLOCK (&nfs3->fdlrulock); return 0; } int __nfs3_fdcache_replace (struct nfs3_state *nfs3) { struct nfs3_fd_entry *fde = NULL; struct nfs3_fd_entry *tmp = NULL; if (!nfs3) return -1; if (nfs3->fdcount <= GF_NFS3_FDCACHE_SIZE) return 0; list_for_each_entry_safe (fde, tmp, &nfs3->fdlru, list) break; __nfs3_fdcache_remove_entry (nfs3, fde); return 0; } int nfs3_fdcache_add (struct nfs3_state *nfs3, fd_t *fd) { struct nfs3_fd_entry *fde = NULL; int ret = -1; if ((!nfs3) || (!fd)) return -1; fde = GF_CALLOC (1, sizeof (*fd), gf_nfs_mt_nfs3_fd_entry); if (!fde) { gf_log (GF_NFS3, GF_LOG_ERROR, "fd entry allocation failed"); goto out; } /* Already refd by caller. */ fde->cachedfd = fd; INIT_LIST_HEAD (&fde->list); LOCK (&nfs3->fdlrulock); { gf_log (GF_NFS3, GF_LOG_TRACE, "Adding fd: 0x%lx", (long int) fd); fd_ctx_set (fd, nfs3->nfsx, (uintptr_t)fde); fd_bind (fd); list_add_tail (&fde->list, &nfs3->fdlru); ++nfs3->fdcount; __nfs3_fdcache_replace (nfs3); } UNLOCK (&nfs3->fdlrulock); out: return ret; } int32_t nfs3_file_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, fd_t *fd) { nfs3_call_state_t *cs = NULL; struct nfs3_state *nfs3 = NULL; cs = frame->local; if (op_ret == -1) { gf_log (GF_NFS3, GF_LOG_TRACE, "Opening uncached fd failed"); cs->resolve_ret = -1; cs->resolve_errno = op_errno; fd = NULL; } else { gf_log (GF_NFS3, GF_LOG_TRACE, "Opening uncached fd done: %d", fd->refcount); } nfs3 = nfs_rpcsvc_request_program_private (cs->req); nfs3_flush_open_wait_call_states (cs, fd); nfs3_fdcache_add (nfs3, fd); return 0; } struct inode_op_queue * __nfs3_get_inode_queue (nfs3_call_state_t *cs) { struct inode_op_queue *inode_q = NULL; int ret = -1; uint64_t ctxaddr = 0; ret = __inode_ctx_get (cs->resolvedloc.inode, cs->nfsx, &ctxaddr); if (ret == 0) { inode_q = (struct inode_op_queue *)(long)ctxaddr; gf_log (GF_NFS3, GF_LOG_TRACE, "Inode queue already inited"); goto err; } inode_q = GF_CALLOC (1, sizeof (*inode_q), gf_nfs_mt_inode_q); if (!inode_q) { gf_log (GF_NFS3, GF_LOG_ERROR, "Memory allocation failed"); goto err; } gf_log (GF_NFS3, GF_LOG_TRACE, "Initing inode queue"); INIT_LIST_HEAD (&inode_q->opq); pthread_mutex_init (&inode_q->qlock, NULL); __inode_ctx_put (cs->resolvedloc.inode, cs->nfsx, (uintptr_t)inode_q); err: return inode_q; } struct inode_op_queue * nfs3_get_inode_queue (nfs3_call_state_t *cs) { struct inode_op_queue *inode_q = NULL; LOCK (&cs->resolvedloc.inode->lock); { inode_q = __nfs3_get_inode_queue (cs); } UNLOCK (&cs->resolvedloc.inode->lock); return inode_q; } #define GF_NFS3_FD_OPEN_INPROGRESS 1 #define GF_NFS3_FD_NEEDS_OPEN 0 int __nfs3_queue_call_state (struct inode_op_queue *inode_q, nfs3_call_state_t *cs) { int ret = -1; if (!inode_q) goto err; pthread_mutex_lock (&inode_q->qlock); { if (list_empty (&inode_q->opq)) { gf_log (GF_NFS3, GF_LOG_TRACE, "First call in queue"); ret = GF_NFS3_FD_NEEDS_OPEN; } else ret = GF_NFS3_FD_OPEN_INPROGRESS; gf_log (GF_NFS3, GF_LOG_TRACE, "Queueing call state"); list_add_tail (&cs->openwait_q, &inode_q->opq); } pthread_mutex_unlock (&inode_q->qlock); err: return ret; } /* Returns GF_NFS3_FD_NEEDS_OPEN if the current call is the first one to be * queued. If so, the caller will need to send the open fop. If this is a * non-first call to be queued, it means the fd opening is in progress and * GF_NFS3_FD_OPEN_INPROGRESS is returned. * * Returns -1 on error. */ int nfs3_queue_call_state (nfs3_call_state_t *cs) { struct inode_op_queue *inode_q = NULL; int ret = -1; inode_q = nfs3_get_inode_queue (cs); if (!inode_q) { gf_log (GF_NFS3, GF_LOG_ERROR, "Failed to get inode op queue"); goto err; } ret = __nfs3_queue_call_state (inode_q, cs); err: return ret; } int __nfs3_file_open_and_resume (nfs3_call_state_t *cs) { nfs_user_t nfu = {0, }; int ret = -EFAULT; if (!cs) return ret; ret = nfs3_queue_call_state (cs); if (ret == -1) { gf_log (GF_NFS3, GF_LOG_ERROR, "Error queueing call state"); ret = -EFAULT; goto out; } else if (ret == GF_NFS3_FD_OPEN_INPROGRESS) { gf_log (GF_NFS3, GF_LOG_TRACE, "Open in progress. Will wait."); ret = 0; goto out; } nfs_user_root_create (&nfu); gf_log (GF_NFS3, GF_LOG_TRACE, "Opening uncached fd"); ret = nfs_open (cs->nfsx, cs->vol, &nfu, &cs->resolvedloc, O_RDWR, nfs3_file_open_cbk, cs); out: return ret; } fd_t * nfs3_fdcache_getfd (struct nfs3_state *nfs3, inode_t *inode) { fd_t *fd = NULL; if ((!nfs3) || (!inode)) return NULL; fd = fd_lookup (inode, 0); if (fd) { /* Already refd by fd_lookup, so no need to ref again. */ gf_log (GF_NFS3, GF_LOG_TRACE, "fd found in state: %d", fd->refcount); nfs3_fdcache_update (nfs3, fd); } else gf_log (GF_NFS3, GF_LOG_TRACE, "fd not found in state"); return fd; } int nfs3_file_open_and_resume (nfs3_call_state_t *cs, nfs3_resume_fn_t resume) { fd_t *fd = NULL; int ret = -EFAULT; if (!cs) return ret; cs->resume_fn = resume; gf_log (GF_NFS3, GF_LOG_TRACE, "Opening: %s", cs->resolvedloc.path); fd = nfs3_fdcache_getfd (cs->nfs3state, cs->resolvedloc.inode); if (fd) { cs->fd = fd; /* Gets unrefd when the call state is wiped. */ cs->resolve_ret = 0; nfs3_call_resume (cs); ret = 0; goto err; } ret = __nfs3_file_open_and_resume (cs); err: return ret; } void nfs3_stat_to_errstr (uint32_t xid, char *op, nfsstat3 stat, int pstat, char *errstr) { if ((!op) || (!errstr)) return; sprintf (errstr, "XID: %x, %s: NFS: %d(%s), POSIX: %d(%s)", xid, op, stat, nfsstat3_strerror (stat), pstat, strerror (pstat)); } void nfs3_log_common_call (uint32_t xid, char *op, struct nfs3_fh *fh) { char fhstr[1024]; nfs3_fh_to_str (fh, fhstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, %s: args: %s", xid, op, fhstr); } void nfs3_log_fh_entry_call (uint32_t xid, char *op, struct nfs3_fh *fh, char *name) { char fhstr[1024]; nfs3_fh_to_str (fh, fhstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, %s: args: %s, name: %s", xid, op, fhstr, name); } void nfs3_log_rename_call (uint32_t xid, struct nfs3_fh *src, char *sname, struct nfs3_fh *dst, char *dname) { char sfhstr[1024]; char dfhstr[1024]; nfs3_fh_to_str (src, sfhstr); nfs3_fh_to_str (dst, dfhstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, RENAME: args: Src: %s, " "name: %s, Dst: %s, name: %s", xid, sfhstr, sname, dfhstr, dname); } void nfs3_log_create_call (uint32_t xid, struct nfs3_fh *fh, char *name, createmode3 mode) { char fhstr[1024]; char *modestr = NULL; char exclmode[] = "EXCLUSIVE"; char unchkd[] = "UNCHECKED"; char guarded[] = "GUARDED"; nfs3_fh_to_str (fh, fhstr); if (mode == EXCLUSIVE) modestr = exclmode; else if (mode == GUARDED) modestr = guarded; else modestr = unchkd; gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, CREATE: args: %s, name: %s," " mode: %s", xid, fhstr, name, modestr); } void nfs3_log_mknod_call (uint32_t xid, struct nfs3_fh *fh, char *name, int type) { char fhstr[1024]; char *modestr = NULL; char chr[] = "CHAR"; char blk[] = "BLK"; char sock[] = "SOCK"; char fifo[] = "FIFO"; nfs3_fh_to_str (fh, fhstr); if (type == NF3CHR) modestr = chr; else if (type == NF3BLK) modestr = blk; else if (type == NF3SOCK) modestr = sock; else modestr = fifo; gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, MKNOD: args: %s, name: %s," " type: %s", xid, fhstr, name, modestr); } void nfs3_log_symlink_call (uint32_t xid, struct nfs3_fh *fh, char *name, char *tgt) { char fhstr[1024]; nfs3_fh_to_str (fh, fhstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, SYMLINK: args: %s, name: %s," " target: %s", xid, fhstr, name, tgt); } void nfs3_log_link_call (uint32_t xid, struct nfs3_fh *fh, char *name, struct nfs3_fh *tgt) { char dfhstr[1024]; char tfhstr[1024]; nfs3_fh_to_str (fh, dfhstr); nfs3_fh_to_str (tgt, tfhstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, LINK: args: %s, name: %s," " target: %s", xid, dfhstr, name, tfhstr); } void nfs3_log_rw_call (uint32_t xid, char *op, struct nfs3_fh *fh, offset3 offt, count3 count, int stablewrite) { char fhstr[1024]; nfs3_fh_to_str (fh, fhstr); if (stablewrite == -1) gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, %s: args: %s, offset:" " %"PRIu64", count: %"PRIu32, xid, op, fhstr, offt, count); else gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, %s: args: %s, offset:" " %"PRIu64", count: %"PRIu32", %s", xid, op, fhstr, offt, count, (stablewrite == UNSTABLE)?"UNSTABLE":"STABLE"); } void nfs3_log_common_res (uint32_t xid, char *op, nfsstat3 stat, int pstat) { char errstr[1024]; nfs3_stat_to_errstr (xid, op, stat, pstat, errstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "%s", errstr); } void nfs3_log_readlink_res (uint32_t xid, nfsstat3 stat, int pstat, char *linkpath) { char errstr[1024]; nfs3_stat_to_errstr (xid, "READLINK", stat, pstat, errstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "%s, target: %s", errstr, linkpath); } void nfs3_log_read_res (uint32_t xid, nfsstat3 stat, int pstat, count3 count, int is_eof, struct iovec *vec, int32_t veccount) { char errstr[1024]; nfs3_stat_to_errstr (xid, "READ", stat, pstat, errstr); if (vec) gf_log (GF_NFS3, GF_LOG_DEBUG, "%s, count: %"PRIu32", is_eof:" " %d, vector: count: %d, len: %zd", errstr, count, is_eof, veccount, vec->iov_len); else gf_log (GF_NFS3, GF_LOG_DEBUG, "%s, count: %"PRIu32", is_eof:" " %d", errstr, count, is_eof); } void nfs3_log_write_res (uint32_t xid, nfsstat3 stat, int pstat, count3 count, int stable, uint64_t wverf) { char errstr[1024]; nfs3_stat_to_errstr (xid, "WRITE", stat, pstat, errstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "%s, count: %"PRIu32", %s,wverf: %"PRIu64 , errstr, count, (stable == UNSTABLE)?"UNSTABLE":"STABLE", wverf); } void nfs3_log_newfh_res (uint32_t xid, char *op, nfsstat3 stat, int pstat, struct nfs3_fh *newfh) { char errstr[1024]; char fhstr[1024]; nfs3_stat_to_errstr (xid, op, stat, pstat, errstr); nfs3_fh_to_str (newfh, fhstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "%s, %s", errstr, fhstr); } void nfs3_log_readdir_res (uint32_t xid, nfsstat3 stat, int pstat, uint64_t cverf, count3 count, int is_eof) { char errstr[1024]; nfs3_stat_to_errstr (xid, "READDIR", stat, pstat, errstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "%s, count: %"PRIu32", cverf: %"PRIu64 ", is_eof: %d", errstr, count, cverf, is_eof); } void nfs3_log_readdirp_res (uint32_t xid, nfsstat3 stat, int pstat, uint64_t cverf, count3 dircount, count3 maxcount, int is_eof) { char errstr[1024]; nfs3_stat_to_errstr (xid, "READDIRPLUS", stat, pstat, errstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "%s, dircount: %"PRIu32", maxcount: %" PRIu32", cverf: %"PRIu64", is_eof: %d", errstr, dircount, maxcount, cverf, is_eof); } void nfs3_log_commit_res (uint32_t xid, nfsstat3 stat, int pstat, uint64_t wverf) { char errstr[1024]; nfs3_stat_to_errstr (xid, "COMMIT", stat, pstat, errstr); gf_log (GF_NFS3, GF_LOG_DEBUG, "%s, wverf: %"PRIu64, errstr, wverf); } void nfs3_log_readdir_call (uint32_t xid, struct nfs3_fh *fh, count3 dircount, count3 maxcount) { char fhstr[1024]; nfs3_fh_to_str (fh, fhstr); if (maxcount == 0) gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, READDIR: args: %s," " count: %d", xid, fhstr, (uint32_t)dircount); else gf_log (GF_NFS3, GF_LOG_DEBUG, "XID: %x, READDIRPLUS: args: %s," " dircount: %d, maxcount: %d", xid, fhstr, (uint32_t)dircount, (uint32_t)maxcount); } int nfs3_fh_resolve_inode_done (nfs3_call_state_t *cs, inode_t *inode) { int ret = -EFAULT; if ((!cs) || (!inode)) return ret; gf_log (GF_NFS3, GF_LOG_TRACE, "FH inode resolved"); ret = nfs_inode_loc_fill (inode, &cs->resolvedloc); if (ret < 0) goto err; nfs3_call_resume (cs); err: return ret; } #define GF_NFS3_FHRESOLVE_FOUND 1 #define GF_NFS3_FHRESOLVE_NOTFOUND 2 #define GF_NFS3_FHRESOLVE_DIRFOUND 3 int nfs3_fh_resolve_check_entry (struct nfs3_fh *fh, gf_dirent_t *candidate, int hashidx) { struct iatt *ia = NULL; int ret = GF_NFS3_FHRESOLVE_NOTFOUND; nfs3_hash_entry_t entryhash = 0; if ((!fh) || (!candidate)) return ret; if ((strcmp (candidate->d_name, ".") == 0) || (strcmp (candidate->d_name, "..") == 0)) goto found_entry; ia = &candidate->d_stat; if ((ia->ia_gen == fh->gen) && (ia->ia_ino == fh->ino)) { gf_log (GF_NFS3, GF_LOG_TRACE, "Found entry: gen: %"PRId64 " ino: %"PRId64", name: %s, hashcount %d", ia->ia_gen, ia->ia_ino, candidate->d_name, hashidx); ret = GF_NFS3_FHRESOLVE_FOUND; goto found_entry; } /* This condition ensures that we never have to be afraid of having * a directory hash conflict with a file hash. The consequence of * this condition is that we can now have unlimited files in a directory * and upto 65536 sub-directories in a directory. */ if (!IA_ISDIR (candidate->d_stat.ia_type)) goto found_entry; entryhash = fh->entryhash[hashidx]; if (entryhash == nfs3_fh_hash_entry (ia->ia_ino, ia->ia_gen)) { gf_log (GF_NFS3, GF_LOG_TRACE, "Found hash match: %s: %d, " "hashidx: %d", candidate->d_name, entryhash, hashidx); ret = GF_NFS3_FHRESOLVE_DIRFOUND; goto found_entry; } found_entry: return ret; } int32_t nfs3_fh_resolve_entry_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, inode_t *inode, struct iatt *buf, dict_t *xattr, struct iatt *postparent) { nfs3_call_state_t *cs = NULL; cs = frame->local; cs->resolve_ret = op_ret; cs->resolve_errno = op_errno; if (op_ret == -1) { gf_log (GF_NFS3, GF_LOG_TRACE, "Lookup failed: %s: %s", cs->resolvedloc.path, strerror (op_errno)); goto err; } else gf_log (GF_NFS3, GF_LOG_TRACE, "Entry looked up: %s", cs->resolvedloc.path); inode_link (inode, cs->resolvedloc.parent, cs->resolvedloc.name, buf); err: nfs3_call_resume (cs); return 0; } int32_t nfs3_fh_resolve_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, gf_dirent_t *entries); int nfs3_fh_resolve_found_entry (nfs3_call_state_t *cs, gf_dirent_t *candidate) { uint64_t dirino = 0; uint64_t dirgen = 0; int ret = 0; nfs_user_t nfu = {0, }; if ((!cs) || (!candidate)) return -EFAULT; dirino = cs->resolvedloc.inode->ino; nfs_loc_wipe (&cs->resolvedloc); ret = nfs_entry_loc_fill (cs->vol->itable, dirino, dirgen, candidate->d_name, &cs->resolvedloc, NFS_RESOLVE_CREATE); if (ret == -ENOENT) { gf_log (GF_NFS3, GF_LOG_TRACE, "Entry not in itable, needs" " lookup"); nfs_user_root_create (&nfu); ret = nfs_lookup (cs->nfsx, cs->vol, &nfu, &cs->resolvedloc, nfs3_fh_resolve_entry_lookup_cbk, cs); } else { gf_log (GF_NFS3, GF_LOG_TRACE, "Entry got from itable"); nfs3_call_resume (cs); } return ret; } int32_t nfs3_fh_resolve_parent_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, inode_t *inode, struct iatt *buf, dict_t *xattr, struct iatt *postparent) { nfs3_call_state_t *cs = NULL; cs = frame->local; cs->resolve_ret = op_ret; cs->resolve_errno = op_errno; if (op_ret == -1) { gf_log (GF_NFS3, GF_LOG_TRACE, "Lookup failed: %s: %s", cs->resolvedloc.path, strerror (op_errno)); nfs3_call_resume (cs); goto err; } else gf_log (GF_NFS3, GF_LOG_TRACE, "Entry looked up: %s", cs->resolvedloc.path); inode_link (inode, cs->resolvedloc.parent, cs->resolvedloc.name, buf); nfs3_fh_resolve_entry_hard (cs); err: return 0; } int nfs3_fh_resolve_found_parent (nfs3_call_state_t *cs, gf_dirent_t *candidate) { uint64_t dirino = 0; uint64_t dirgen = 0; int ret = 0; nfs_user_t nfu = {0, }; if ((!cs) || (!candidate)) return -EFAULT; dirino = cs->resolvedloc.inode->ino; nfs_loc_wipe (&cs->resolvedloc); ret = nfs_entry_loc_fill (cs->vol->itable, dirino, dirgen, candidate->d_name, &cs->resolvedloc, NFS_RESOLVE_CREATE); if (ret == -ENOENT) { nfs_user_root_create (&nfu); ret = nfs_lookup (cs->nfsx, cs->vol, &nfu, &cs->resolvedloc, nfs3_fh_resolve_parent_lookup_cbk, cs); } else nfs3_fh_resolve_entry_hard (cs); return ret; } int nfs3_fh_resolve_found (nfs3_call_state_t *cs, gf_dirent_t *candidate) { int ret = 0; if ((!cs) || (!candidate)) return -EFAULT; if (!cs->resolventry) { gf_log (GF_NFS3, GF_LOG_TRACE, "Candidate entry was found"); ret = nfs3_fh_resolve_found_entry (cs, candidate); } else { gf_log (GF_NFS3, GF_LOG_TRACE, "Entry's parent was found"); ret = nfs3_fh_resolve_found_parent (cs, candidate); } return ret; } int32_t nfs3_fh_resolve_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, fd_t *fd) { nfs3_call_state_t *cs = NULL; int ret = -EFAULT; nfs_user_t nfu = {0, }; cs = frame->local; cs->resolve_ret = op_ret; cs->resolve_errno = op_errno; if (op_ret == -1) { gf_log (GF_NFS3, GF_LOG_TRACE, "Dir open failed: %s: %s", cs->resolvedloc.path, strerror (op_errno)); nfs3_call_resume (cs); goto err; } else gf_log (GF_NFS3, GF_LOG_TRACE, "Reading directory: %s", cs->resolvedloc.path); nfs_user_root_create (&nfu); /* Keep this directory fd_t around till we have either: * a. found the entry, * b. exhausted all the entries, * c. decide to step into a child directory. * * This decision is made in nfs3_fh_resolve_check_response. */ cs->resolve_dir_fd = fd; gf_log (GF_NFS3, GF_LOG_TRACE, "resolve new fd refed: 0x%lx, ref: %d", (long)cs->resolve_dir_fd, cs->resolve_dir_fd->refcount); ret = nfs_readdirp (cs->nfsx, cs->vol, &nfu, fd, GF_NFS3_DTPREF, 0, nfs3_fh_resolve_readdir_cbk, cs); err: return ret; } int32_t nfs3_fh_resolve_dir_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret,int32_t op_errno, inode_t *inode, struct iatt *buf, dict_t *xattr, struct iatt *postparent) { nfs3_call_state_t *cs = NULL; nfs_user_t nfu = {0, }; cs = frame->local; cs->resolve_ret = op_ret; cs->resolve_errno = op_errno; if (op_ret == -1) { gf_log (GF_NFS3, GF_LOG_TRACE, "Lookup failed: %s: %s", cs->resolvedloc.path, strerror (op_errno)); nfs3_call_resume (cs); goto err; } else gf_log (GF_NFS3, GF_LOG_TRACE, "Dir will be opened: %s", cs->resolvedloc.path); nfs_user_root_create (&nfu); inode_link (inode, cs->resolvedloc.parent, cs->resolvedloc.name, buf); nfs_opendir (cs->nfsx, cs->vol, &nfu, &cs->resolvedloc, nfs3_fh_resolve_opendir_cbk, cs); err: return 0; } /* Validate the depth of the dir such that we do not end up opening and * reading directories beyond those that are needed for resolving the file * handle. * Returns 1 if fh resolution can continue, 0 otherwise. */ int nfs3_fh_resolve_validate_dirdepth (nfs3_call_state_t *cs) { int ret = 1; if (!cs) return 0; /* This condition will generally never be hit because the * hash-matching scheme will prevent us from going into a * directory that is not part of the hash-array. */ if (nfs3_fh_hash_index_is_beyond (&cs->resolvefh, cs->hashidx)) { gf_log (GF_NFS3, GF_LOG_TRACE, "Hash index is beyond: idx %d," " fh idx: %d", cs->hashidx, cs->resolvefh.hashcount); ret = 0; goto out; } if (cs->hashidx >= GF_NFSFH_MAXHASHES) { gf_log (GF_NFS3, GF_LOG_TRACE, "Hash index beyond max hashes:" " hashidx %d, max: %d", cs->hashidx, GF_NFSFH_MAXHASHES); ret = 0; goto out; } out: return ret; } int nfs3_fh_resolve_dir_hard (nfs3_call_state_t *cs, uint64_t ino, uint64_t gen, char *entry) { int ret = -EFAULT; nfs_user_t nfu = {0, }; if (!cs) return ret; cs->hashidx++; nfs_loc_wipe (&cs->resolvedloc); if (!nfs3_fh_resolve_validate_dirdepth (cs)) { gf_log (GF_NFS3, GF_LOG_TRACE, "Dir depth validation failed"); nfs3_call_resume_estale (cs); ret = 0; goto out; } nfs_user_root_create (&nfu); gf_log (GF_NFS3, GF_LOG_TRACE, "FH hard dir resolution: ino:" " %"PRIu64", gen: %"PRIu64", entry: %s, next hashcount: %d", ino, gen, entry, cs->hashidx); ret = nfs_entry_loc_fill (cs->vol->itable, ino, gen, entry, &cs->resolvedloc, NFS_RESOLVE_CREATE); if (ret == 0) { gf_log (GF_NFS3, GF_LOG_TRACE, "Dir will be opened: %s", cs->resolvedloc.path); ret = nfs_opendir (cs->nfsx, cs->vol, &nfu, &cs->resolvedloc, nfs3_fh_resolve_opendir_cbk, cs); } else if (ret == -ENOENT) { gf_log (GF_NFS3, GF_LOG_TRACE, "Dir needs lookup: %s", cs->resolvedloc.path); ret = nfs_lookup (cs->nfsx, cs->vol, &nfu, &cs->resolvedloc, nfs3_fh_resolve_dir_lookup_cbk, cs); } out: return ret; } /* * Called in a recursive code path, so if another * directory was opened in an earlier call during fh resolution, we must unref * through this reference before opening another fd_t. */ #define nfs3_fh_resolve_close_cwd(cst) \ do { \ if ((cst)->resolve_dir_fd) { \ gf_log (GF_NFS3, GF_LOG_TRACE, "resolve fd " \ "unrefing: 0x%lx, ref: %d", \ (long)(cst)->resolve_dir_fd, \ (cst)->resolve_dir_fd->refcount); \ fd_unref ((cst)->resolve_dir_fd); \ } \ } while (0) \ int nfs3_fh_resolve_check_response (nfs3_call_state_t *cs, gf_dirent_t *candidate, int response, off_t last_offt) { uint64_t dirino = 0; uint64_t dirgen = 0; int ret = -EFAULT; nfs_user_t nfu = {0, }; if (!cs) return ret; dirino = cs->resolvedloc.inode->ino; switch (response) { case GF_NFS3_FHRESOLVE_DIRFOUND: nfs3_fh_resolve_close_cwd (cs); nfs3_fh_resolve_dir_hard (cs, dirino, dirgen, candidate->d_name); break; case GF_NFS3_FHRESOLVE_FOUND: nfs3_fh_resolve_close_cwd (cs); nfs3_fh_resolve_found (cs, candidate); break; case GF_NFS3_FHRESOLVE_NOTFOUND: nfs_user_root_create (&nfu); nfs_readdirp (cs->nfsx, cs->vol, &nfu, cs->resolve_dir_fd, GF_NFS3_DTPREF, last_offt, nfs3_fh_resolve_readdir_cbk, cs); break; } return 0; } int nfs3_fh_resolve_search_dir (nfs3_call_state_t *cs, gf_dirent_t *entries) { gf_dirent_t *candidate = NULL; int ret = GF_NFS3_FHRESOLVE_NOTFOUND; off_t lastoff = 0; if ((!cs) || (!entries)) return -EFAULT; if (list_empty (&entries->list)) goto not_found; list_for_each_entry (candidate, &entries->list, list) { lastoff = candidate->d_off; gf_log (GF_NFS3, GF_LOG_TRACE, "Candidate: %s, ino: %"PRIu64 ", gen: %"PRIu64, candidate->d_name, candidate->d_ino, candidate->d_stat.ia_gen); ret = nfs3_fh_resolve_check_entry (&cs->resolvefh, candidate, cs->hashidx); if (ret != GF_NFS3_FHRESOLVE_NOTFOUND) break; } not_found: nfs3_fh_resolve_check_response (cs, candidate, ret, lastoff); return ret; } int32_t nfs3_fh_resolve_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, gf_dirent_t *entries) { nfs3_call_state_t *cs = NULL; cs = frame->local; if (op_ret <= 0) { gf_log (GF_NFS3, GF_LOG_TRACE, "Directory read done: %s: %s", cs->resolvedloc.path, strerror (op_ret)); cs->resolve_ret = -1; cs->resolve_errno = ESTALE; nfs3_call_resume (cs); goto err; } nfs3_fh_resolve_search_dir (cs, entries); err: return 0; } /* Needs no extra argument since it knows that the fh to be resolved is in * resolvefh and that it needs to start looking from the root. */ int nfs3_fh_resolve_inode_hard (nfs3_call_state_t *cs) { int ret = -EFAULT; nfs_user_t nfu = {0, }; if (!cs) return ret; cs->hashidx++; nfs_loc_wipe (&cs->resolvedloc); if (!nfs3_fh_resolve_validate_dirdepth (cs)) { gf_log (GF_NFS3, GF_LOG_TRACE, "Dir depth validation failed"); nfs3_call_resume_estale (cs); ret = 0; goto out; } nfs_user_root_create (&nfu); gf_log (GF_NFS3, GF_LOG_TRACE, "FH hard resolution for: ino:" " %"PRIu64", gen: %"PRIu64", hashcount: %d, current hashidx " "%d", cs->resolvefh.ino, cs->resolvefh.gen, cs->resolvefh.hashcount, cs->hashidx); ret = nfs_ino_loc_fill (cs->vol->itable, 1, 0, &cs->resolvedloc); if (ret == 0) { gf_log (GF_NFS3, GF_LOG_TRACE, "Dir will be opened: %s", cs->resolvedloc.path); ret = nfs_opendir (cs->nfsx, cs->vol, &nfu, &cs->resolvedloc, nfs3_fh_resolve_opendir_cbk, cs); } else if (ret == -ENOENT) { gf_log (GF_NFS3, GF_LOG_TRACE, "Dir needs lookup: %s", cs->resolvedloc.path); ret = nfs_lookup (cs->nfsx, cs->vol, &nfu, &cs->resolvedloc, nfs3_fh_resolve_dir_lookup_cbk, cs); } out: return ret; } int nfs3_fh_resolve_entry_hard (nfs3_call_state_t *cs) { int ret = -EFAULT; nfs_user_t nfu = {0, }; if (!cs) return ret; nfs_loc_wipe (&cs->resolvedloc); nfs_user_root_create (&nfu); gf_log (GF_NFS3, GF_LOG_TRACE, "FH hard resolution: ino:" " %"PRIu64", gen: %"PRIu64", entry: %s, hashidx: %d", cs->resolvefh.ino, cs->resolvefh.gen, cs->resolventry, cs->hashidx); ret = nfs_entry_loc_fill (cs->vol->itable, cs->resolvefh.ino, cs->resolvefh.gen, cs->resolventry, &cs->resolvedloc, NFS_RESOLVE_CREATE); if (ret == -2) { gf_log (GF_NFS3, GF_LOG_TRACE, "Entry needs lookup: %s", cs->resolvedloc.path); nfs_lookup (cs->nfsx, cs->vol, &nfu, &cs->resolvedloc, nfs3_fh_resolve_entry_lookup_cbk, cs); ret = 0; } else if (ret == -1) { gf_log (GF_NFS3, GF_LOG_TRACE, "Entry needs parent lookup: %s", cs->resolvedloc.path); ret = nfs3_fh_resolve_inode_hard (cs); } else if (ret == 0) { cs->resolve_ret = 0; nfs3_call_resume (cs); } return ret; } int nfs3_fh_resolve_inode (nfs3_call_state_t *cs) { inode_t *inode = NULL; int ret = -EFAULT; if (!cs) return ret; gf_log (GF_NFS3, GF_LOG_TRACE, "FH needs inode resolution"); inode = inode_get (cs->vol->itable, cs->resolvefh.ino, cs->resolvefh.gen); if (!inode) ret = nfs3_fh_resolve_inode_hard (cs); else ret = nfs3_fh_resolve_inode_done (cs, inode); if (inode) inode_unref (inode); return ret; } int nfs3_fh_resolve_entry (nfs3_call_state_t *cs) { int ret = -EFAULT; if (!cs) return ret; ret = nfs3_fh_resolve_entry_hard (cs); if (ret < 0) nfs3_call_resume_estale (cs); return 0; } int nfs3_fh_resolve_and_resume (nfs3_call_state_t *cs, struct nfs3_fh *fh, char *entry, nfs3_resume_fn_t resum_fn) { int ret = -EFAULT; if ((!cs) || (!fh)) return ret; cs->resume_fn = resum_fn; cs->resolvefh = *fh; cs->hashidx = 0; /* Check if the resolution is: * a. fh resolution * * or * * b. (fh, basename) resolution */ if (!entry) /* a */ ret = nfs3_fh_resolve_inode (cs); else { /* b */ cs->resolventry = gf_strdup (entry); if (!cs->resolventry) goto err; ret = nfs3_fh_resolve_entry (cs); } err: return ret; }