703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 1) /*
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 2) * FUSE: Filesystem in Userspace
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 3) * Copyright (C) 2001-2016 Miklos Szeredi <miklos@szeredi.hu>
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 4) *
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 5) * This program can be distributed under the terms of the GNU GPL.
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 6) * See the file COPYING.
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 7) */
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 8)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 9) #include "fuse_i.h"
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 10)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 11) #include <linux/xattr.h>
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 12) #include <linux/posix_acl_xattr.h>
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 13)
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 14) int fuse_setxattr(struct inode *inode, const char *name, const void *value,
52a4c95f4d24b (Vivek Goyal 2021-03-25 11:18:22 -0400 15) size_t size, int flags, unsigned int extra_flags)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 16) {
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 17) struct fuse_mount *fm = get_fuse_mount(inode);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 18) FUSE_ARGS(args);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 19) struct fuse_setxattr_in inarg;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 20) int err;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 21)
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 22) if (fm->fc->no_setxattr)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 23) return -EOPNOTSUPP;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 24)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 25) memset(&inarg, 0, sizeof(inarg));
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 26) inarg.size = size;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 27) inarg.flags = flags;
52a4c95f4d24b (Vivek Goyal 2021-03-25 11:18:22 -0400 28) inarg.setxattr_flags = extra_flags;
52a4c95f4d24b (Vivek Goyal 2021-03-25 11:18:22 -0400 29)
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 30) args.opcode = FUSE_SETXATTR;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 31) args.nodeid = get_node_id(inode);
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 32) args.in_numargs = 3;
52a4c95f4d24b (Vivek Goyal 2021-03-25 11:18:22 -0400 33) args.in_args[0].size = fm->fc->setxattr_ext ?
52a4c95f4d24b (Vivek Goyal 2021-03-25 11:18:22 -0400 34) sizeof(inarg) : FUSE_COMPAT_SETXATTR_IN_SIZE;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 35) args.in_args[0].value = &inarg;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 36) args.in_args[1].size = strlen(name) + 1;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 37) args.in_args[1].value = name;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 38) args.in_args[2].size = size;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 39) args.in_args[2].value = value;
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 40) err = fuse_simple_request(fm, &args);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 41) if (err == -ENOSYS) {
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 42) fm->fc->no_setxattr = 1;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 43) err = -EOPNOTSUPP;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 44) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 45) if (!err) {
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 46) fuse_invalidate_attr(inode);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 47) fuse_update_ctime(inode);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 48) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 49) return err;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 50) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 51)
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 52) ssize_t fuse_getxattr(struct inode *inode, const char *name, void *value,
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 53) size_t size)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 54) {
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 55) struct fuse_mount *fm = get_fuse_mount(inode);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 56) FUSE_ARGS(args);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 57) struct fuse_getxattr_in inarg;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 58) struct fuse_getxattr_out outarg;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 59) ssize_t ret;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 60)
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 61) if (fm->fc->no_getxattr)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 62) return -EOPNOTSUPP;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 63)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 64) memset(&inarg, 0, sizeof(inarg));
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 65) inarg.size = size;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 66) args.opcode = FUSE_GETXATTR;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 67) args.nodeid = get_node_id(inode);
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 68) args.in_numargs = 2;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 69) args.in_args[0].size = sizeof(inarg);
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 70) args.in_args[0].value = &inarg;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 71) args.in_args[1].size = strlen(name) + 1;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 72) args.in_args[1].value = name;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 73) /* This is really two different operations rolled into one */
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 74) args.out_numargs = 1;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 75) if (size) {
1f4e9d03d1fbf (Miklos Szeredi 2019-09-10 15:04:08 +0200 76) args.out_argvar = true;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 77) args.out_args[0].size = size;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 78) args.out_args[0].value = value;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 79) } else {
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 80) args.out_args[0].size = sizeof(outarg);
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 81) args.out_args[0].value = &outarg;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 82) }
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 83) ret = fuse_simple_request(fm, &args);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 84) if (!ret && !size)
63401ccdb2ca0 (Miklos Szeredi 2016-10-03 11:06:05 +0200 85) ret = min_t(ssize_t, outarg.size, XATTR_SIZE_MAX);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 86) if (ret == -ENOSYS) {
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 87) fm->fc->no_getxattr = 1;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 88) ret = -EOPNOTSUPP;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 89) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 90) return ret;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 91) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 92)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 93) static int fuse_verify_xattr_list(char *list, size_t size)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 94) {
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 95) size_t origsize = size;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 96)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 97) while (size) {
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 98) size_t thislen = strnlen(list, size);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 99)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 100) if (!thislen || thislen == size)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 101) return -EIO;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 102)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 103) size -= thislen + 1;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 104) list += thislen + 1;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 105) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 106)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 107) return origsize;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 108) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 109)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 110) ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 111) {
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 112) struct inode *inode = d_inode(entry);
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 113) struct fuse_mount *fm = get_fuse_mount(inode);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 114) FUSE_ARGS(args);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 115) struct fuse_getxattr_in inarg;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 116) struct fuse_getxattr_out outarg;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 117) ssize_t ret;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 118)
5d069dbe8aaf2 (Miklos Szeredi 2020-12-10 15:33:14 +0100 119) if (fuse_is_bad(inode))
5d069dbe8aaf2 (Miklos Szeredi 2020-12-10 15:33:14 +0100 120) return -EIO;
5d069dbe8aaf2 (Miklos Szeredi 2020-12-10 15:33:14 +0100 121)
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 122) if (!fuse_allow_current_process(fm->fc))
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 123) return -EACCES;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 124)
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 125) if (fm->fc->no_listxattr)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 126) return -EOPNOTSUPP;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 127)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 128) memset(&inarg, 0, sizeof(inarg));
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 129) inarg.size = size;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 130) args.opcode = FUSE_LISTXATTR;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 131) args.nodeid = get_node_id(inode);
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 132) args.in_numargs = 1;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 133) args.in_args[0].size = sizeof(inarg);
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 134) args.in_args[0].value = &inarg;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 135) /* This is really two different operations rolled into one */
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 136) args.out_numargs = 1;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 137) if (size) {
1f4e9d03d1fbf (Miklos Szeredi 2019-09-10 15:04:08 +0200 138) args.out_argvar = true;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 139) args.out_args[0].size = size;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 140) args.out_args[0].value = list;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 141) } else {
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 142) args.out_args[0].size = sizeof(outarg);
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 143) args.out_args[0].value = &outarg;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 144) }
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 145) ret = fuse_simple_request(fm, &args);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 146) if (!ret && !size)
63401ccdb2ca0 (Miklos Szeredi 2016-10-03 11:06:05 +0200 147) ret = min_t(ssize_t, outarg.size, XATTR_LIST_MAX);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 148) if (ret > 0 && size)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 149) ret = fuse_verify_xattr_list(list, ret);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 150) if (ret == -ENOSYS) {
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 151) fm->fc->no_listxattr = 1;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 152) ret = -EOPNOTSUPP;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 153) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 154) return ret;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 155) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 156)
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 157) int fuse_removexattr(struct inode *inode, const char *name)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 158) {
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 159) struct fuse_mount *fm = get_fuse_mount(inode);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 160) FUSE_ARGS(args);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 161) int err;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 162)
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 163) if (fm->fc->no_removexattr)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 164) return -EOPNOTSUPP;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 165)
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 166) args.opcode = FUSE_REMOVEXATTR;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 167) args.nodeid = get_node_id(inode);
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 168) args.in_numargs = 1;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 169) args.in_args[0].size = strlen(name) + 1;
d5b4854357f47 (Miklos Szeredi 2019-09-10 15:04:08 +0200 170) args.in_args[0].value = name;
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 171) err = fuse_simple_request(fm, &args);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 172) if (err == -ENOSYS) {
fcee216beb9c1 (Max Reitz 2020-05-06 17:44:12 +0200 173) fm->fc->no_removexattr = 1;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 174) err = -EOPNOTSUPP;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 175) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 176) if (!err) {
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 177) fuse_invalidate_attr(inode);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 178) fuse_update_ctime(inode);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 179) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 180) return err;
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 181) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 182)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 183) static int fuse_xattr_get(const struct xattr_handler *handler,
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 184) struct dentry *dentry, struct inode *inode,
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 185) const char *name, void *value, size_t size)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 186) {
5d069dbe8aaf2 (Miklos Szeredi 2020-12-10 15:33:14 +0100 187) if (fuse_is_bad(inode))
5d069dbe8aaf2 (Miklos Szeredi 2020-12-10 15:33:14 +0100 188) return -EIO;
5d069dbe8aaf2 (Miklos Szeredi 2020-12-10 15:33:14 +0100 189)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 190) return fuse_getxattr(inode, name, value, size);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 191) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 192)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 193) static int fuse_xattr_set(const struct xattr_handler *handler,
e65ce2a50cf6a (Christian Brauner 2021-01-21 14:19:27 +0100 194) struct user_namespace *mnt_userns,
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 195) struct dentry *dentry, struct inode *inode,
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 196) const char *name, const void *value, size_t size,
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 197) int flags)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 198) {
5d069dbe8aaf2 (Miklos Szeredi 2020-12-10 15:33:14 +0100 199) if (fuse_is_bad(inode))
5d069dbe8aaf2 (Miklos Szeredi 2020-12-10 15:33:14 +0100 200) return -EIO;
5d069dbe8aaf2 (Miklos Szeredi 2020-12-10 15:33:14 +0100 201)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 202) if (!value)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 203) return fuse_removexattr(inode, name);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 204)
52a4c95f4d24b (Vivek Goyal 2021-03-25 11:18:22 -0400 205) return fuse_setxattr(inode, name, value, size, flags, 0);
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 206) }
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 207)
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 208) static bool no_xattr_list(struct dentry *dentry)
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 209) {
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 210) return false;
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 211) }
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 212)
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 213) static int no_xattr_get(const struct xattr_handler *handler,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 214) struct dentry *dentry, struct inode *inode,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 215) const char *name, void *value, size_t size)
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 216) {
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 217) return -EOPNOTSUPP;
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 218) }
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 219)
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 220) static int no_xattr_set(const struct xattr_handler *handler,
e65ce2a50cf6a (Christian Brauner 2021-01-21 14:19:27 +0100 221) struct user_namespace *mnt_userns,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 222) struct dentry *dentry, struct inode *nodee,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 223) const char *name, const void *value,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 224) size_t size, int flags)
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 225) {
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 226) return -EOPNOTSUPP;
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 227) }
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 228)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 229) static const struct xattr_handler fuse_xattr_handler = {
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 230) .prefix = "",
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 231) .get = fuse_xattr_get,
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 232) .set = fuse_xattr_set,
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 233) };
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 234)
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 235) const struct xattr_handler *fuse_xattr_handlers[] = {
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 236) &fuse_xattr_handler,
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 237) NULL
703c73629f934 (Seth Forshee 2016-08-29 08:46:36 -0500 238) };
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 239)
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 240) const struct xattr_handler *fuse_acl_xattr_handlers[] = {
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 241) &posix_acl_access_xattr_handler,
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 242) &posix_acl_default_xattr_handler,
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 243) &fuse_xattr_handler,
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 244) NULL
60bcc88ad185d (Seth Forshee 2016-08-29 08:46:37 -0500 245) };
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 246)
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 247) static const struct xattr_handler fuse_no_acl_access_xattr_handler = {
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 248) .name = XATTR_NAME_POSIX_ACL_ACCESS,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 249) .flags = ACL_TYPE_ACCESS,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 250) .list = no_xattr_list,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 251) .get = no_xattr_get,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 252) .set = no_xattr_set,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 253) };
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 254)
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 255) static const struct xattr_handler fuse_no_acl_default_xattr_handler = {
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 256) .name = XATTR_NAME_POSIX_ACL_DEFAULT,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 257) .flags = ACL_TYPE_ACCESS,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 258) .list = no_xattr_list,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 259) .get = no_xattr_get,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 260) .set = no_xattr_set,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 261) };
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 262)
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 263) const struct xattr_handler *fuse_no_acl_xattr_handlers[] = {
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 264) &fuse_no_acl_access_xattr_handler,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 265) &fuse_no_acl_default_xattr_handler,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 266) &fuse_xattr_handler,
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 267) NULL
e45b2546e23c2 (Eric W. Biederman 2018-05-04 11:47:28 -0500 268) };
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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