^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <linux/gfp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <linux/nfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/nfs3.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/nfs_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/posix_acl_xattr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/nfsacl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "nfs3_fs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define NFSDBG_FACILITY NFSDBG_PROC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * nfs3_prepare_get_acl, nfs3_complete_get_acl, nfs3_abort_get_acl: Helpers for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * caching get_acl results in a race-free way. See fs/posix_acl.c:get_acl()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * for explanations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static void nfs3_prepare_get_acl(struct posix_acl **p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct posix_acl *sentinel = uncached_acl_sentinel(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) if (cmpxchg(p, ACL_NOT_CACHED, sentinel) != ACL_NOT_CACHED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* Not the first reader or sentinel already in place. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static void nfs3_complete_get_acl(struct posix_acl **p, struct posix_acl *acl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct posix_acl *sentinel = uncached_acl_sentinel(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* Only cache the ACL if our sentinel is still in place. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) posix_acl_dup(acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) if (cmpxchg(p, sentinel, acl) != sentinel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) posix_acl_release(acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static void nfs3_abort_get_acl(struct posix_acl **p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct posix_acl *sentinel = uncached_acl_sentinel(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* Remove our sentinel upon failure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) cmpxchg(p, sentinel, ACL_NOT_CACHED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct posix_acl *nfs3_get_acl(struct inode *inode, int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct nfs_server *server = NFS_SERVER(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct page *pages[NFSACL_MAXPAGES] = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct nfs3_getaclargs args = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) .fh = NFS_FH(inode),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /* The xdr layer may allocate pages here. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) .pages = pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct nfs3_getaclres res = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct rpc_message msg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) .rpc_argp = &args,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .rpc_resp = &res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int status, count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (!nfs_server_capable(inode, NFS_CAP_ACLS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return ERR_PTR(-EOPNOTSUPP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) status = nfs_revalidate_inode(server, inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (status < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return ERR_PTR(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * Only get the access acl when explicitly requested: We don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * need it for access decisions, and only some applications use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * it. Applications which request the access acl first are not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * penalized from this optimization.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (type == ACL_TYPE_ACCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) args.mask |= NFS_ACLCNT|NFS_ACL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (S_ISDIR(inode->i_mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) args.mask |= NFS_DFACLCNT|NFS_DFACL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (args.mask == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) dprintk("NFS call getacl\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_GETACL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) res.fattr = nfs_alloc_fattr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (res.fattr == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (args.mask & NFS_ACL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) nfs3_prepare_get_acl(&inode->i_acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (args.mask & NFS_DFACL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) nfs3_prepare_get_acl(&inode->i_default_acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) status = rpc_call_sync(server->client_acl, &msg, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) dprintk("NFS reply getacl: %d\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /* pages may have been allocated at the xdr layer. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) for (count = 0; count < NFSACL_MAXPAGES && args.pages[count]; count++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) __free_page(args.pages[count]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) status = nfs_refresh_inode(inode, res.fattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) case -EPFNOSUPPORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) case -EPROTONOSUPPORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) dprintk("NFS_V3_ACL extension not supported; disabling\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) server->caps &= ~NFS_CAP_ACLS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) case -ENOTSUPP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) status = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) goto getout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if ((args.mask & res.mask) != args.mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) status = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) goto getout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (res.acl_access != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if ((posix_acl_equiv_mode(res.acl_access, NULL) == 0) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) res.acl_access->a_count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) posix_acl_release(res.acl_access);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) res.acl_access = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (res.mask & NFS_ACL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) nfs3_complete_get_acl(&inode->i_acl, res.acl_access);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) forget_cached_acl(inode, ACL_TYPE_ACCESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (res.mask & NFS_DFACL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) nfs3_complete_get_acl(&inode->i_default_acl, res.acl_default);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) forget_cached_acl(inode, ACL_TYPE_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) nfs_free_fattr(res.fattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (type == ACL_TYPE_ACCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) posix_acl_release(res.acl_default);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return res.acl_access;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) posix_acl_release(res.acl_access);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return res.acl_default;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) getout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) nfs3_abort_get_acl(&inode->i_acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) nfs3_abort_get_acl(&inode->i_default_acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) posix_acl_release(res.acl_access);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) posix_acl_release(res.acl_default);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) nfs_free_fattr(res.fattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) return ERR_PTR(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) static int __nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct posix_acl *dfacl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct nfs_server *server = NFS_SERVER(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct nfs_fattr *fattr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct page *pages[NFSACL_MAXPAGES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct nfs3_setaclargs args = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) .inode = inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) .mask = NFS_ACL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) .acl_access = acl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) .pages = pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct rpc_message msg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .rpc_argp = &args,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .rpc_resp = &fattr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int status = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (acl == NULL && (!S_ISDIR(inode->i_mode) || dfacl == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) status = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (!nfs_server_capable(inode, NFS_CAP_ACLS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /* We are doing this here because XDR marshalling does not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * return any results, it BUGs. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) status = -ENOSPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (acl != NULL && acl->a_count > NFS_ACL_MAX_ENTRIES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (dfacl != NULL && dfacl->a_count > NFS_ACL_MAX_ENTRIES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (S_ISDIR(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) args.mask |= NFS_DFACL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) args.acl_default = dfacl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) args.len = nfsacl_size(acl, dfacl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) args.len = nfsacl_size(acl, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (args.len > NFS_ACL_INLINE_BUFSIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) unsigned int npages = 1 + ((args.len - 1) >> PAGE_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) status = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) args.pages[args.npages] = alloc_page(GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (args.pages[args.npages] == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) goto out_freepages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) args.npages++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) } while (args.npages < npages);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) dprintk("NFS call setacl\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) status = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) fattr = nfs_alloc_fattr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (fattr == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) goto out_freepages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_SETACL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) msg.rpc_resp = fattr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) status = rpc_call_sync(server->client_acl, &msg, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) nfs_access_zap_cache(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) nfs_zap_acl_cache(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) dprintk("NFS reply setacl: %d\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) status = nfs_refresh_inode(inode, fattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) case -EPFNOSUPPORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) case -EPROTONOSUPPORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) dprintk("NFS_V3_ACL SETACL RPC not supported"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) "(will not retry)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) server->caps &= ~NFS_CAP_ACLS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) case -ENOTSUPP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) status = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) nfs_free_fattr(fattr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) out_freepages:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) while (args.npages != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) args.npages--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) __free_page(args.pages[args.npages]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct posix_acl *dfacl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) ret = __nfs3_proc_setacls(inode, acl, dfacl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return (ret == -EOPNOTSUPP) ? 0 : ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) int nfs3_set_acl(struct inode *inode, struct posix_acl *acl, int type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct posix_acl *orig = acl, *dfacl = NULL, *alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (S_ISDIR(inode->i_mode)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) switch(type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) case ACL_TYPE_ACCESS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) alloc = get_acl(inode, ACL_TYPE_DEFAULT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (IS_ERR(alloc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) dfacl = alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) case ACL_TYPE_DEFAULT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) alloc = get_acl(inode, ACL_TYPE_ACCESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (IS_ERR(alloc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) dfacl = acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) acl = alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) if (acl == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) alloc = posix_acl_from_mode(inode->i_mode, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (IS_ERR(alloc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) acl = alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) status = __nfs3_proc_setacls(inode, acl, dfacl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (acl != orig)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) posix_acl_release(acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (dfacl != orig)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) posix_acl_release(dfacl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) status = PTR_ERR(alloc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) const struct xattr_handler *nfs3_xattr_handlers[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) &posix_acl_access_xattr_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) &posix_acl_default_xattr_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) nfs3_list_one_acl(struct inode *inode, int type, const char *name, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) size_t size, ssize_t *result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) struct posix_acl *acl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) char *p = data + *result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) acl = get_acl(inode, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (IS_ERR_OR_NULL(acl))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) posix_acl_release(acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) *result += strlen(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) *result += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (!size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (*result > size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) return -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) strcpy(p, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) nfs3_listxattr(struct dentry *dentry, char *data, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct inode *inode = d_inode(dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) ssize_t result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) error = nfs3_list_one_acl(inode, ACL_TYPE_ACCESS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) XATTR_NAME_POSIX_ACL_ACCESS, data, size, &result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) error = nfs3_list_one_acl(inode, ACL_TYPE_DEFAULT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) XATTR_NAME_POSIX_ACL_DEFAULT, data, size, &result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags