Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1 | /* |
| 2 | FUSE: Filesystem in Userspace |
Miklos Szeredi | 2e6b6f2 | 2004-07-07 19:19:53 +0000 | [diff] [blame] | 3 | Copyright (C) 2001-2004 Miklos Szeredi <miklos@szeredi.hu> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 4 | |
| 5 | This program can be distributed under the terms of the GNU GPL. |
| 6 | See the file COPYING. |
| 7 | */ |
| 8 | |
| 9 | #include "fuse_i.h" |
| 10 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 11 | #include <linux/pagemap.h> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 12 | #include <linux/slab.h> |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 13 | #include <linux/file.h> |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 14 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 15 | static struct inode_operations fuse_dir_inode_operations; |
| 16 | static struct inode_operations fuse_file_inode_operations; |
| 17 | static struct inode_operations fuse_symlink_inode_operations; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 18 | |
| 19 | static struct file_operations fuse_dir_operations; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 20 | |
Miklos Szeredi | 307242f | 2004-01-26 11:28:44 +0000 | [diff] [blame] | 21 | static struct dentry_operations fuse_dentry_operations; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 22 | |
Miklos Szeredi | 7c35cf9 | 2004-01-14 16:56:49 +0000 | [diff] [blame] | 23 | #ifndef KERNEL_2_6 |
| 24 | #define new_decode_dev(x) (x) |
| 25 | #define new_encode_dev(x) (x) |
| 26 | #endif |
| 27 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 28 | static void change_attributes(struct inode *inode, struct fuse_attr *attr) |
| 29 | { |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 30 | if (S_ISREG(inode->i_mode) && i_size_read(inode) != attr->size) { |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 31 | #ifdef KERNEL_2_6 |
| 32 | invalidate_inode_pages(inode->i_mapping); |
| 33 | #else |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 34 | invalidate_inode_pages(inode); |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 35 | #endif |
| 36 | } |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 37 | |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 38 | inode->i_ino = attr->ino; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 39 | inode->i_mode = (inode->i_mode & S_IFMT) + (attr->mode & 07777); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 40 | inode->i_nlink = attr->nlink; |
| 41 | inode->i_uid = attr->uid; |
| 42 | inode->i_gid = attr->gid; |
Miklos Szeredi | d1199f8 | 2004-02-06 15:29:22 +0000 | [diff] [blame] | 43 | i_size_write(inode, attr->size); |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 44 | inode->i_blksize = PAGE_CACHE_SIZE; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 45 | inode->i_blocks = attr->blocks; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 46 | #ifdef KERNEL_2_6 |
| 47 | inode->i_atime.tv_sec = attr->atime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 48 | inode->i_atime.tv_nsec = attr->atimensec; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 49 | inode->i_mtime.tv_sec = attr->mtime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 50 | inode->i_mtime.tv_nsec = attr->mtimensec; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 51 | inode->i_ctime.tv_sec = attr->ctime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 52 | inode->i_ctime.tv_nsec = attr->ctimensec; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 53 | #else |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 54 | inode->i_atime = attr->atime; |
| 55 | inode->i_mtime = attr->mtime; |
| 56 | inode->i_ctime = attr->ctime; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 57 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 58 | } |
| 59 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 60 | static void fuse_init_inode(struct inode *inode, struct fuse_attr *attr) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 61 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 62 | inode->i_mode = attr->mode & S_IFMT; |
Miklos Szeredi | d1199f8 | 2004-02-06 15:29:22 +0000 | [diff] [blame] | 63 | i_size_write(inode, attr->size); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 64 | if (S_ISREG(inode->i_mode)) { |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 65 | inode->i_op = &fuse_file_inode_operations; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 66 | fuse_init_file_inode(inode); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 67 | } |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 68 | else if (S_ISDIR(inode->i_mode)) { |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 69 | inode->i_op = &fuse_dir_inode_operations; |
| 70 | inode->i_fop = &fuse_dir_operations; |
| 71 | } |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 72 | else if (S_ISLNK(inode->i_mode)) { |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 73 | inode->i_op = &fuse_symlink_inode_operations; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 74 | } |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 75 | else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || |
| 76 | S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)){ |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 77 | inode->i_op = &fuse_file_inode_operations; |
Miklos Szeredi | 7c35cf9 | 2004-01-14 16:56:49 +0000 | [diff] [blame] | 78 | init_special_inode(inode, inode->i_mode, |
| 79 | new_decode_dev(attr->rdev)); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 80 | } else |
| 81 | printk("fuse_init_inode: bad file type: %o\n", inode->i_mode); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 82 | } |
| 83 | |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 84 | #ifdef KERNEL_2_6 |
| 85 | static int fuse_inode_eq(struct inode *inode, void *_nodeidp) |
| 86 | { |
| 87 | unsigned long nodeid = *(unsigned long *) _nodeidp; |
| 88 | struct fuse_inode *fi = INO_FI(inode); |
| 89 | if (fi->nodeid == nodeid) |
| 90 | return 1; |
| 91 | else |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | static int fuse_inode_set(struct inode *inode, void *_nodeidp) |
| 96 | { |
| 97 | unsigned long nodeid = *(unsigned long *) _nodeidp; |
| 98 | struct fuse_inode *fi = INO_FI(inode); |
| 99 | fi->nodeid = nodeid; |
| 100 | return 0; |
| 101 | } |
| 102 | |
| 103 | struct inode *fuse_iget(struct super_block *sb, unsigned long nodeid, |
| 104 | int generation, struct fuse_attr *attr, int version) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 105 | { |
| 106 | struct inode *inode; |
| 107 | |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 108 | inode = iget5_locked(sb, nodeid, fuse_inode_eq, fuse_inode_set, &nodeid); |
| 109 | if (!inode) |
| 110 | return NULL; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 111 | |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 112 | if ((inode->i_state & I_NEW)) { |
| 113 | inode->i_generation = generation; |
| 114 | fuse_init_inode(inode, attr); |
| 115 | unlock_new_inode(inode); |
| 116 | } else if (inode->i_generation != generation) |
| 117 | printk("fuse_iget: bad generation for node %lu\n", nodeid); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 118 | |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 119 | change_attributes(inode, attr); |
| 120 | inode->i_version = version; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 121 | return inode; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 122 | } |
| 123 | |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 124 | struct inode *fuse_ilookup(struct fuse_conn *fc, ino_t ino, unsigned long nodeid) |
| 125 | { |
| 126 | return ilookup5(fc->sb, nodeid, fuse_inode_eq, &nodeid); |
| 127 | } |
| 128 | #else |
| 129 | static int fuse_inode_eq(struct inode *inode, unsigned long ino, void *_nodeidp){ |
| 130 | unsigned long nodeid = *(unsigned long *) _nodeidp; |
| 131 | struct fuse_inode *fi = INO_FI(inode); |
| 132 | if (inode->u.generic_ip && fi->nodeid == nodeid) |
| 133 | return 1; |
| 134 | else |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | struct inode *fuse_iget(struct super_block *sb, unsigned long nodeid, |
| 139 | int generation, struct fuse_attr *attr, int version) |
| 140 | { |
| 141 | struct inode *inode; |
| 142 | |
| 143 | inode = iget4(sb, attr->ino, fuse_inode_eq, &nodeid); |
| 144 | if (!inode) |
| 145 | return NULL; |
| 146 | |
| 147 | if (!inode->u.generic_ip) { |
| 148 | struct fuse_inode *fi = INO_FI(inode); |
| 149 | fi->nodeid = nodeid; |
| 150 | inode->u.generic_ip = inode; |
| 151 | inode->i_generation = generation; |
| 152 | fuse_init_inode(inode, attr); |
| 153 | } else if (inode->i_generation != generation) |
| 154 | printk("fuse_iget: bad generation for node %lu\n", nodeid); |
| 155 | |
| 156 | change_attributes(inode, attr); |
| 157 | inode->i_version = version; |
| 158 | return inode; |
| 159 | } |
| 160 | |
| 161 | struct inode *fuse_ilookup(struct fuse_conn *fc, ino_t ino, unsigned long nodeid) |
| 162 | { |
| 163 | struct inode *inode = iget4(fc->sb, ino, fuse_inode_eq, &nodeid); |
| 164 | if (inode && !inode->u.generic_ip) { |
| 165 | iput(inode); |
| 166 | inode = NULL; |
| 167 | } |
| 168 | return inode; |
| 169 | } |
| 170 | |
| 171 | #endif |
| 172 | |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 173 | static int fuse_send_lookup(struct fuse_conn *fc, struct fuse_req *req, |
| 174 | struct inode *dir, struct dentry *entry, |
| 175 | struct fuse_entry_out *outarg, int *version) |
| 176 | { |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 177 | struct fuse_inode *fi = INO_FI(dir); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 178 | req->in.h.opcode = FUSE_LOOKUP; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 179 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 180 | req->in.numargs = 1; |
| 181 | req->in.args[0].size = entry->d_name.len + 1; |
| 182 | req->in.args[0].value = entry->d_name.name; |
| 183 | req->out.numargs = 1; |
| 184 | req->out.args[0].size = sizeof(struct fuse_entry_out); |
| 185 | req->out.args[0].value = outarg; |
| 186 | request_send(fc, req); |
| 187 | *version = req->out.h.unique; |
| 188 | return req->out.h.error; |
| 189 | } |
| 190 | |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 191 | static int fuse_do_lookup(struct inode *dir, struct dentry *entry, |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 192 | struct fuse_entry_out *outarg, int *version) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 193 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 194 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 195 | struct fuse_req *req; |
| 196 | int err; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 197 | |
| 198 | if (entry->d_name.len > FUSE_NAME_MAX) |
| 199 | return -ENAMETOOLONG; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 200 | req = fuse_get_request(fc); |
| 201 | if (!req) |
| 202 | return -ERESTARTSYS; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 203 | |
| 204 | err = fuse_send_lookup(fc, req, dir, entry, outarg, version); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 205 | fuse_put_request(fc, req); |
| 206 | return err; |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 207 | } |
| 208 | |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 209 | static inline unsigned long time_to_jiffies(unsigned long sec, |
| 210 | unsigned long nsec) |
| 211 | { |
| 212 | /* prevent wrapping of jiffies */ |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 213 | if (sec + 1 >= LONG_MAX / HZ) |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 214 | return 0; |
| 215 | |
| 216 | return jiffies + sec * HZ + nsec / (1000000000 / HZ); |
| 217 | } |
| 218 | |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 219 | static int fuse_lookup_iget(struct inode *dir, struct dentry *entry, |
| 220 | struct inode **inodep) |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 221 | { |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 222 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 223 | int err; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 224 | struct fuse_entry_out outarg; |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 225 | int version; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 226 | struct inode *inode = NULL; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 227 | struct fuse_req *req; |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 228 | |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 229 | if (entry->d_name.len > FUSE_NAME_MAX) |
| 230 | return -ENAMETOOLONG; |
| 231 | req = fuse_get_request(fc); |
| 232 | if (!req) |
| 233 | return -ERESTARTSYS; |
| 234 | |
| 235 | err = fuse_send_lookup(fc, req, dir, entry, &outarg, &version); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 236 | if (!err) { |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 237 | inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation, |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 238 | &outarg.attr, version); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 239 | if (!inode) { |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 240 | fuse_send_forget(fc, req, outarg.nodeid, version); |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 241 | return -ENOMEM; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 242 | } |
| 243 | } |
| 244 | fuse_put_request(fc, req); |
| 245 | if (err && err != -ENOENT) |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 246 | return err; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 247 | |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 248 | if (inode) { |
| 249 | struct fuse_inode *fi = INO_FI(inode); |
| 250 | entry->d_time = time_to_jiffies(outarg.entry_valid, |
Miklos Szeredi | ad051c3 | 2004-07-02 09:22:50 +0000 | [diff] [blame] | 251 | outarg.entry_valid_nsec); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 252 | fi->i_time = time_to_jiffies(outarg.attr_valid, |
| 253 | outarg.attr_valid_nsec); |
| 254 | } |
Miklos Szeredi | ad051c3 | 2004-07-02 09:22:50 +0000 | [diff] [blame] | 255 | |
Miklos Szeredi | 307242f | 2004-01-26 11:28:44 +0000 | [diff] [blame] | 256 | entry->d_op = &fuse_dentry_operations; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 257 | *inodep = inode; |
| 258 | return 0; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 259 | } |
| 260 | |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 261 | static void fuse_invalidate_attr(struct inode *inode) |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 262 | { |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 263 | struct fuse_inode *fi = INO_FI(inode); |
| 264 | fi->i_time = jiffies - 1; |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 265 | } |
| 266 | |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 267 | static int lookup_new_entry(struct fuse_conn *fc, struct fuse_req *req, |
| 268 | struct inode *dir, struct dentry *entry, |
| 269 | struct fuse_entry_out *outarg, int version, |
| 270 | int mode) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 271 | { |
| 272 | struct inode *inode; |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 273 | struct fuse_inode *fi; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 274 | inode = fuse_iget(dir->i_sb, outarg->nodeid, outarg->generation, |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 275 | &outarg->attr, version); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 276 | if (!inode) { |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 277 | fuse_send_forget(fc, req, outarg->nodeid, version); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 278 | return -ENOMEM; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 279 | } |
| 280 | fuse_put_request(fc, req); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 281 | |
| 282 | /* Don't allow userspace to do really stupid things... */ |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 283 | if ((inode->i_mode ^ mode) & S_IFMT) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 284 | iput(inode); |
| 285 | printk("fuse_mknod: inode has wrong type\n"); |
| 286 | return -EINVAL; |
| 287 | } |
| 288 | |
Miklos Szeredi | ad051c3 | 2004-07-02 09:22:50 +0000 | [diff] [blame] | 289 | entry->d_time = time_to_jiffies(outarg->entry_valid, |
| 290 | outarg->entry_valid_nsec); |
| 291 | |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 292 | fi = INO_FI(inode); |
| 293 | fi->i_time = time_to_jiffies(outarg->attr_valid, |
| 294 | outarg->attr_valid_nsec); |
| 295 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 296 | d_instantiate(entry, inode); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 297 | fuse_invalidate_attr(dir); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 302 | static int _fuse_mknod(struct inode *dir, struct dentry *entry, int mode, |
| 303 | dev_t rdev) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 304 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 305 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 306 | struct fuse_inode *fi = INO_FI(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 307 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 308 | struct fuse_mknod_in inarg; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 309 | struct fuse_entry_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 310 | int err; |
| 311 | |
| 312 | if (!req) |
| 313 | return -ERESTARTSYS; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 314 | |
| 315 | memset(&inarg, 0, sizeof(inarg)); |
| 316 | inarg.mode = mode; |
Miklos Szeredi | 7c35cf9 | 2004-01-14 16:56:49 +0000 | [diff] [blame] | 317 | inarg.rdev = new_encode_dev(rdev); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 318 | req->in.h.opcode = FUSE_MKNOD; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 319 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 320 | req->in.numargs = 2; |
| 321 | req->in.args[0].size = sizeof(inarg); |
| 322 | req->in.args[0].value = &inarg; |
| 323 | req->in.args[1].size = entry->d_name.len + 1; |
| 324 | req->in.args[1].value = entry->d_name.name; |
| 325 | req->out.numargs = 1; |
| 326 | req->out.args[0].size = sizeof(outarg); |
| 327 | req->out.args[0].value = &outarg; |
| 328 | request_send(fc, req); |
| 329 | err = req->out.h.error; |
| 330 | if (!err) |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 331 | err = lookup_new_entry(fc, req, dir, entry, &outarg, |
| 332 | req->out.h.unique, mode); |
| 333 | else |
| 334 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 335 | return err; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 336 | } |
| 337 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 338 | static int _fuse_create(struct inode *dir, struct dentry *entry, int mode) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 339 | { |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 340 | return _fuse_mknod(dir, entry, mode, 0); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 341 | } |
| 342 | |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 343 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 344 | static int fuse_mkdir(struct inode *dir, struct dentry *entry, int mode) |
| 345 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 346 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 347 | struct fuse_inode *fi = INO_FI(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 348 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 349 | struct fuse_mkdir_in inarg; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 350 | struct fuse_entry_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 351 | int err; |
| 352 | |
| 353 | if (!req) |
| 354 | return -ERESTARTSYS; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 355 | |
| 356 | memset(&inarg, 0, sizeof(inarg)); |
| 357 | inarg.mode = mode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 358 | req->in.h.opcode = FUSE_MKDIR; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 359 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 360 | req->in.numargs = 2; |
| 361 | req->in.args[0].size = sizeof(inarg); |
| 362 | req->in.args[0].value = &inarg; |
| 363 | req->in.args[1].size = entry->d_name.len + 1; |
| 364 | req->in.args[1].value = entry->d_name.name; |
| 365 | req->out.numargs = 1; |
| 366 | req->out.args[0].size = sizeof(outarg); |
| 367 | req->out.args[0].value = &outarg; |
| 368 | request_send(fc, req); |
| 369 | err = req->out.h.error; |
| 370 | if (!err) |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 371 | err = lookup_new_entry(fc, req, dir, entry, &outarg, |
| 372 | req->out.h.unique, S_IFDIR); |
| 373 | else |
| 374 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 375 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | static int fuse_symlink(struct inode *dir, struct dentry *entry, |
| 379 | const char *link) |
| 380 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 381 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 382 | struct fuse_inode *fi = INO_FI(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 383 | struct fuse_req *req; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 384 | struct fuse_entry_out outarg; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 385 | unsigned int len = strlen(link) + 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 386 | int err; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 387 | |
| 388 | if (len > FUSE_SYMLINK_MAX) |
| 389 | return -ENAMETOOLONG; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 390 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 391 | req = fuse_get_request(fc); |
| 392 | if (!req) |
| 393 | return -ERESTARTSYS; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 394 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 395 | req->in.h.opcode = FUSE_SYMLINK; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 396 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 397 | req->in.numargs = 2; |
| 398 | req->in.args[0].size = entry->d_name.len + 1; |
| 399 | req->in.args[0].value = entry->d_name.name; |
| 400 | req->in.args[1].size = len; |
| 401 | req->in.args[1].value = link; |
| 402 | req->out.numargs = 1; |
| 403 | req->out.args[0].size = sizeof(outarg); |
| 404 | req->out.args[0].value = &outarg; |
| 405 | request_send(fc, req); |
| 406 | err = req->out.h.error; |
| 407 | if (!err) |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 408 | err = lookup_new_entry(fc, req, dir, entry, &outarg, |
| 409 | req->out.h.unique, S_IFLNK); |
| 410 | else |
| 411 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 412 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 413 | } |
| 414 | |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 415 | static int fuse_unlink(struct inode *dir, struct dentry *entry) |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 416 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 417 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 418 | struct fuse_inode *fi = INO_FI(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 419 | struct fuse_req *req = fuse_get_request(fc); |
| 420 | int err; |
| 421 | |
| 422 | if (!req) |
| 423 | return -ERESTARTSYS; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 424 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 425 | req->in.h.opcode = FUSE_UNLINK; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 426 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 427 | req->in.numargs = 1; |
| 428 | req->in.args[0].size = entry->d_name.len + 1; |
| 429 | req->in.args[0].value = entry->d_name.name; |
| 430 | request_send(fc, req); |
| 431 | err = req->out.h.error; |
| 432 | if (!err) { |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 433 | struct inode *inode = entry->d_inode; |
| 434 | |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 435 | /* Set nlink to zero so the inode can be cleared, if |
| 436 | the inode does have more links this will be |
| 437 | discovered at the next lookup/getattr */ |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 438 | inode->i_nlink = 0; |
| 439 | fuse_invalidate_attr(inode); |
| 440 | fuse_invalidate_attr(dir); |
Miklos Szeredi | f4f8b89 | 2004-01-27 17:04:59 +0000 | [diff] [blame] | 441 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 442 | fuse_put_request(fc, req); |
| 443 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 444 | } |
| 445 | |
| 446 | static int fuse_rmdir(struct inode *dir, struct dentry *entry) |
| 447 | { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 448 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 449 | struct fuse_inode *fi = INO_FI(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 450 | struct fuse_req *req = fuse_get_request(fc); |
| 451 | int err; |
| 452 | |
| 453 | if (!req) |
| 454 | return -ERESTARTSYS; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 455 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 456 | req->in.h.opcode = FUSE_RMDIR; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 457 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 458 | req->in.numargs = 1; |
| 459 | req->in.args[0].size = entry->d_name.len + 1; |
| 460 | req->in.args[0].value = entry->d_name.name; |
| 461 | request_send(fc, req); |
| 462 | err = req->out.h.error; |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 463 | if (!err) { |
Miklos Szeredi | f4f8b89 | 2004-01-27 17:04:59 +0000 | [diff] [blame] | 464 | entry->d_inode->i_nlink = 0; |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 465 | fuse_invalidate_attr(dir); |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 466 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 467 | fuse_put_request(fc, req); |
| 468 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | static int fuse_rename(struct inode *olddir, struct dentry *oldent, |
| 472 | struct inode *newdir, struct dentry *newent) |
| 473 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 474 | struct fuse_conn *fc = INO_FC(olddir); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 475 | struct fuse_inode *oldfi = INO_FI(olddir); |
| 476 | struct fuse_inode *newfi = INO_FI(newdir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 477 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 478 | struct fuse_rename_in inarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 479 | int err; |
| 480 | |
| 481 | if (!req) |
| 482 | return -ERESTARTSYS; |
| 483 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 484 | memset(&inarg, 0, sizeof(inarg)); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 485 | inarg.newdir = newfi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 486 | req->in.h.opcode = FUSE_RENAME; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 487 | req->in.h.nodeid = oldfi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 488 | req->in.numargs = 3; |
| 489 | req->in.args[0].size = sizeof(inarg); |
| 490 | req->in.args[0].value = &inarg; |
| 491 | req->in.args[1].size = oldent->d_name.len + 1; |
| 492 | req->in.args[1].value = oldent->d_name.name; |
| 493 | req->in.args[2].size = newent->d_name.len + 1; |
| 494 | req->in.args[2].value = newent->d_name.name; |
| 495 | request_send(fc, req); |
| 496 | err = req->out.h.error; |
| 497 | fuse_put_request(fc, req); |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 498 | if (!err) { |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 499 | fuse_invalidate_attr(olddir); |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 500 | if (olddir != newdir) |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 501 | fuse_invalidate_attr(newdir); |
Miklos Szeredi | 015fe70 | 2004-07-12 11:52:24 +0000 | [diff] [blame] | 502 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 503 | return err; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | static int fuse_link(struct dentry *entry, struct inode *newdir, |
| 507 | struct dentry *newent) |
| 508 | { |
| 509 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 510 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 511 | struct fuse_inode *fi = INO_FI(inode); |
| 512 | struct fuse_inode *newfi = INO_FI(newdir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 513 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 514 | struct fuse_link_in inarg; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 515 | struct fuse_entry_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 516 | int err; |
| 517 | |
| 518 | if (!req) |
| 519 | return -ERESTARTSYS; |
| 520 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 521 | memset(&inarg, 0, sizeof(inarg)); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 522 | inarg.newdir = newfi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 523 | req->in.h.opcode = FUSE_LINK; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 524 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 525 | req->in.numargs = 2; |
| 526 | req->in.args[0].size = sizeof(inarg); |
| 527 | req->in.args[0].value = &inarg; |
| 528 | req->in.args[1].size = newent->d_name.len + 1; |
| 529 | req->in.args[1].value = newent->d_name.name; |
| 530 | req->out.numargs = 1; |
| 531 | req->out.args[0].size = sizeof(outarg); |
| 532 | req->out.args[0].value = &outarg; |
| 533 | request_send(fc, req); |
| 534 | err = req->out.h.error; |
| 535 | if (!err) { |
| 536 | /* Invalidate old entry, so attributes are refreshed */ |
| 537 | d_invalidate(entry); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 538 | err = lookup_new_entry(fc, req, newdir, newent, &outarg, |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 539 | req->out.h.unique, inode->i_mode); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame] | 540 | } else |
| 541 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 542 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 543 | } |
| 544 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 545 | int fuse_do_getattr(struct inode *inode) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 546 | { |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 547 | struct fuse_inode *fi = INO_FI(inode); |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 548 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 549 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 550 | struct fuse_attr_out arg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 551 | int err; |
| 552 | |
| 553 | if (!req) |
| 554 | return -ERESTARTSYS; |
| 555 | |
| 556 | req->in.h.opcode = FUSE_GETATTR; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 557 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 558 | req->out.numargs = 1; |
| 559 | req->out.args[0].size = sizeof(arg); |
| 560 | req->out.args[0].value = &arg; |
| 561 | request_send(fc, req); |
| 562 | err = req->out.h.error; |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 563 | if (!err) { |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 564 | change_attributes(inode, &arg.attr); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 565 | fi->i_time = time_to_jiffies(arg.attr_valid, |
| 566 | arg.attr_valid_nsec); |
| 567 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 568 | fuse_put_request(fc, req); |
| 569 | return err; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 570 | } |
| 571 | |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 572 | static int fuse_revalidate(struct dentry *entry) |
| 573 | { |
| 574 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 575 | struct fuse_inode *fi = INO_FI(inode); |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 576 | struct fuse_conn *fc = INO_FC(inode); |
| 577 | |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 578 | if (fi->nodeid == FUSE_ROOT_ID) { |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 579 | if (!(fc->flags & FUSE_ALLOW_OTHER) && |
Miklos Szeredi | 180ff69 | 2004-11-01 16:01:05 +0000 | [diff] [blame] | 580 | current->fsuid != fc->uid && |
| 581 | (!(fc->flags & FUSE_ALLOW_ROOT) || |
| 582 | current->fsuid != 0)) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 583 | return -EACCES; |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 584 | } else if (!fi->i_time || time_before_eq(jiffies, fi->i_time)) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 585 | return 0; |
| 586 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 587 | return fuse_do_getattr(inode); |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 588 | } |
| 589 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 590 | static int _fuse_permission(struct inode *inode, int mask) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 591 | { |
| 592 | struct fuse_conn *fc = INO_FC(inode); |
| 593 | |
Miklos Szeredi | 180ff69 | 2004-11-01 16:01:05 +0000 | [diff] [blame] | 594 | if (!(fc->flags & FUSE_ALLOW_OTHER) && current->fsuid != fc->uid && |
| 595 | (!(fc->flags & FUSE_ALLOW_ROOT) || current->fsuid != 0)) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 596 | return -EACCES; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 597 | else if (fc->flags & FUSE_DEFAULT_PERMISSIONS) { |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 598 | int err = vfs_permission(inode, mask); |
| 599 | |
| 600 | /* If permission is denied, try to refresh file |
| 601 | attributes. This is also needed, because the root |
| 602 | node will at first have no permissions */ |
| 603 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 604 | if (err == -EACCES) { |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 605 | err = fuse_do_getattr(inode); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 606 | if (!err) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 607 | err = vfs_permission(inode, mask); |
| 608 | } |
| 609 | |
| 610 | /* FIXME: Need some mechanism to revoke permissions: |
| 611 | currently if the filesystem suddenly changes the |
| 612 | file mode, we will not be informed abot that, and |
| 613 | continue to allow access to the file/directory. |
| 614 | |
| 615 | This is actually not so grave, since the user can |
| 616 | simply keep access to the file/directory anyway by |
| 617 | keeping it open... */ |
| 618 | |
| 619 | return err; |
Miklos Szeredi | 69cc79a | 2004-02-17 08:57:29 +0000 | [diff] [blame] | 620 | } else |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 621 | return 0; |
| 622 | } |
| 623 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 624 | static int parse_dirfile(char *buf, size_t nbytes, struct file *file, |
| 625 | void *dstbuf, filldir_t filldir) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 626 | { |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 627 | while (nbytes >= FUSE_NAME_OFFSET) { |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 628 | struct fuse_dirent *dirent = (struct fuse_dirent *) buf; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 629 | size_t reclen = FUSE_DIRENT_SIZE(dirent); |
| 630 | int over; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 631 | if (dirent->namelen > NAME_MAX) { |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 632 | printk("fuse_readdir: name too long\n"); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 633 | return -EPROTO; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 634 | } |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 635 | if (reclen > nbytes) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 636 | break; |
| 637 | |
| 638 | over = filldir(dstbuf, dirent->name, dirent->namelen, |
| 639 | file->f_pos, dirent->ino, dirent->type); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 640 | if (over) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 641 | break; |
| 642 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 643 | buf += reclen; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 644 | file->f_pos += reclen; |
| 645 | nbytes -= reclen; |
| 646 | } |
| 647 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 648 | return 0; |
| 649 | } |
| 650 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 651 | static int fuse_checkdir(struct file *cfile, struct file *file) |
| 652 | { |
| 653 | struct inode *inode; |
| 654 | if (!cfile) { |
| 655 | printk("fuse_getdir: invalid file\n"); |
| 656 | return -EPROTO; |
| 657 | } |
| 658 | inode = cfile->f_dentry->d_inode; |
| 659 | if (!S_ISREG(inode->i_mode)) { |
| 660 | printk("fuse_getdir: not a regular file\n"); |
| 661 | fput(cfile); |
| 662 | return -EPROTO; |
| 663 | } |
| 664 | |
| 665 | file->private_data = cfile; |
| 666 | return 0; |
| 667 | } |
| 668 | |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 669 | static int fuse_getdir(struct file *file) |
| 670 | { |
| 671 | struct inode *inode = file->f_dentry->d_inode; |
| 672 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 673 | struct fuse_inode *fi = INO_FI(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 674 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 675 | struct fuse_getdir_out_i outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 676 | int err; |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 677 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 678 | if (!req) |
| 679 | return -ERESTARTSYS; |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 680 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 681 | req->in.h.opcode = FUSE_GETDIR; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 682 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 683 | req->out.numargs = 1; |
| 684 | req->out.args[0].size = sizeof(struct fuse_getdir_out); |
| 685 | req->out.args[0].value = &outarg; |
| 686 | request_send(fc, req); |
| 687 | err = req->out.h.error; |
| 688 | if (!err) |
| 689 | err = fuse_checkdir(outarg.file, file); |
| 690 | fuse_put_request(fc, req); |
| 691 | return err; |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 692 | } |
| 693 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 694 | #define DIR_BUFSIZE 2048 |
| 695 | static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir) |
| 696 | { |
| 697 | struct file *cfile = file->private_data; |
| 698 | char *buf; |
| 699 | int ret; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 700 | |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 701 | if (!cfile) { |
| 702 | ret = fuse_getdir(file); |
| 703 | if (ret) |
| 704 | return ret; |
| 705 | |
| 706 | cfile = file->private_data; |
| 707 | } |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 708 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 709 | buf = kmalloc(DIR_BUFSIZE, GFP_KERNEL); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 710 | if (!buf) |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 711 | return -ENOMEM; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 712 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 713 | ret = kernel_read(cfile, file->f_pos, buf, DIR_BUFSIZE); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 714 | if (ret < 0) |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 715 | printk("fuse_readdir: failed to read container file\n"); |
| 716 | else |
| 717 | ret = parse_dirfile(buf, ret, file, dstbuf, filldir); |
| 718 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 719 | kfree(buf); |
| 720 | return ret; |
| 721 | } |
| 722 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 723 | static char *read_link(struct dentry *dentry) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 724 | { |
| 725 | struct inode *inode = dentry->d_inode; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 726 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 727 | struct fuse_inode *fi = INO_FI(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 728 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 729 | char *link; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 730 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 731 | if (!req) |
| 732 | return ERR_PTR(-ERESTARTSYS); |
| 733 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 734 | link = (char *) __get_free_page(GFP_KERNEL); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 735 | if (!link) { |
| 736 | link = ERR_PTR(-ENOMEM); |
| 737 | goto out; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 738 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 739 | req->in.h.opcode = FUSE_READLINK; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 740 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 741 | req->out.argvar = 1; |
| 742 | req->out.numargs = 1; |
| 743 | req->out.args[0].size = PAGE_SIZE - 1; |
| 744 | req->out.args[0].value = link; |
| 745 | request_send(fc, req); |
| 746 | if (req->out.h.error) { |
| 747 | free_page((unsigned long) link); |
| 748 | link = ERR_PTR(req->out.h.error); |
| 749 | } else |
| 750 | link[req->out.args[0].size] = '\0'; |
| 751 | out: |
| 752 | fuse_put_request(fc, req); |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 753 | return link; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 754 | } |
| 755 | |
| 756 | static void free_link(char *link) |
| 757 | { |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 758 | if (!IS_ERR(link)) |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 759 | free_page((unsigned long) link); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | static int fuse_readlink(struct dentry *dentry, char *buffer, int buflen) |
| 763 | { |
| 764 | int ret; |
| 765 | char *link; |
| 766 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 767 | link = read_link(dentry); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 768 | ret = vfs_readlink(dentry, buffer, buflen, link); |
| 769 | free_link(link); |
| 770 | return ret; |
| 771 | } |
| 772 | |
| 773 | static int fuse_follow_link(struct dentry *dentry, struct nameidata *nd) |
| 774 | { |
| 775 | int ret; |
| 776 | char *link; |
| 777 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 778 | link = read_link(dentry); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 779 | ret = vfs_follow_link(nd, link); |
| 780 | free_link(link); |
| 781 | return ret; |
| 782 | } |
| 783 | |
| 784 | static int fuse_dir_open(struct inode *inode, struct file *file) |
| 785 | { |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 786 | file->private_data = NULL; |
| 787 | return 0; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | static int fuse_dir_release(struct inode *inode, struct file *file) |
| 791 | { |
| 792 | struct file *cfile = file->private_data; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 793 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 794 | if (cfile) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 795 | fput(cfile); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 796 | |
| 797 | return 0; |
| 798 | } |
| 799 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 800 | static unsigned int iattr_to_fattr(struct iattr *iattr, |
| 801 | struct fuse_attr *fattr) |
| 802 | { |
| 803 | unsigned int ivalid = iattr->ia_valid; |
| 804 | unsigned int fvalid = 0; |
| 805 | |
| 806 | memset(fattr, 0, sizeof(*fattr)); |
| 807 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 808 | if (ivalid & ATTR_MODE) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 809 | fvalid |= FATTR_MODE, fattr->mode = iattr->ia_mode; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 810 | if (ivalid & ATTR_UID) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 811 | fvalid |= FATTR_UID, fattr->uid = iattr->ia_uid; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 812 | if (ivalid & ATTR_GID) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 813 | fvalid |= FATTR_GID, fattr->gid = iattr->ia_gid; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 814 | if (ivalid & ATTR_SIZE) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 815 | fvalid |= FATTR_SIZE, fattr->size = iattr->ia_size; |
| 816 | /* You can only _set_ these together (they may change by themselves) */ |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 817 | if ((ivalid & (ATTR_ATIME | ATTR_MTIME)) == (ATTR_ATIME | ATTR_MTIME)) { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 818 | fvalid |= FATTR_ATIME | FATTR_MTIME; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 819 | #ifdef KERNEL_2_6 |
| 820 | fattr->atime = iattr->ia_atime.tv_sec; |
| 821 | fattr->mtime = iattr->ia_mtime.tv_sec; |
| 822 | #else |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 823 | fattr->atime = iattr->ia_atime; |
| 824 | fattr->mtime = iattr->ia_mtime; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 825 | #endif |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 826 | } |
| 827 | |
| 828 | return fvalid; |
| 829 | } |
| 830 | |
| 831 | static int fuse_setattr(struct dentry *entry, struct iattr *attr) |
| 832 | { |
| 833 | struct inode *inode = entry->d_inode; |
| 834 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 835 | struct fuse_inode *fi = INO_FI(inode); |
Miklos Szeredi | 58615e0 | 2004-07-04 21:21:08 +0000 | [diff] [blame] | 836 | struct fuse_req *req; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 837 | struct fuse_setattr_in inarg; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 838 | struct fuse_attr_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 839 | int err; |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 840 | int is_truncate = 0; |
| 841 | |
Miklos Szeredi | 94ed76a | 2004-07-26 19:38:45 +0000 | [diff] [blame] | 842 | if (fc->flags & FUSE_DEFAULT_PERMISSIONS) { |
| 843 | err = inode_change_ok(inode, attr); |
| 844 | if (err) |
| 845 | return err; |
| 846 | } |
Miklos Szeredi | 58615e0 | 2004-07-04 21:21:08 +0000 | [diff] [blame] | 847 | |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 848 | if (attr->ia_valid & ATTR_SIZE) { |
| 849 | unsigned long limit; |
| 850 | is_truncate = 1; |
| 851 | |
| 852 | limit = current->rlim[RLIMIT_FSIZE].rlim_cur; |
| 853 | if (limit != RLIM_INFINITY && attr->ia_size > limit) { |
| 854 | send_sig(SIGXFSZ, current, 0); |
| 855 | return -EFBIG; |
| 856 | } |
| 857 | //fuse_sync_inode(inode); |
| 858 | } |
Miklos Szeredi | 58615e0 | 2004-07-04 21:21:08 +0000 | [diff] [blame] | 859 | |
| 860 | req = fuse_get_request(fc); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 861 | if (!req) |
| 862 | return -ERESTARTSYS; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 863 | |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 864 | if (is_truncate) |
| 865 | down_write(&fi->write_sem); |
| 866 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 867 | memset(&inarg, 0, sizeof(inarg)); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 868 | inarg.valid = iattr_to_fattr(attr, &inarg.attr); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 869 | req->in.h.opcode = FUSE_SETATTR; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 870 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 871 | req->in.numargs = 1; |
| 872 | req->in.args[0].size = sizeof(inarg); |
| 873 | req->in.args[0].value = &inarg; |
| 874 | req->out.numargs = 1; |
| 875 | req->out.args[0].size = sizeof(outarg); |
| 876 | req->out.args[0].value = &outarg; |
| 877 | request_send(fc, req); |
| 878 | err = req->out.h.error; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 879 | fuse_put_request(fc, req); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 880 | |
| 881 | if (!err) { |
| 882 | if (is_truncate) { |
| 883 | loff_t origsize = i_size_read(inode); |
| 884 | i_size_write(inode, outarg.attr.size); |
| 885 | up_write(&fi->write_sem); |
| 886 | if (origsize > outarg.attr.size) |
| 887 | vmtruncate(inode, outarg.attr.size); |
| 888 | } |
| 889 | change_attributes(inode, &outarg.attr); |
| 890 | fi->i_time = time_to_jiffies(outarg.attr_valid, |
| 891 | outarg.attr_valid_nsec); |
| 892 | } else if (is_truncate) |
| 893 | up_write(&fi->write_sem); |
| 894 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 895 | return err; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 896 | } |
| 897 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 898 | static int _fuse_dentry_revalidate(struct dentry *entry) |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 899 | { |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 900 | if (!entry->d_inode) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 901 | return 0; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 902 | else if (entry->d_time && time_after(jiffies, entry->d_time)) { |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 903 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 904 | struct fuse_inode *fi = INO_FI(inode); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 905 | struct fuse_entry_out outarg; |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 906 | int version; |
| 907 | int ret; |
| 908 | |
| 909 | ret = fuse_do_lookup(entry->d_parent->d_inode, entry, &outarg, |
| 910 | &version); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 911 | if (ret) |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 912 | return 0; |
| 913 | |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 914 | if (outarg.nodeid != fi->nodeid) |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 915 | return 0; |
| 916 | |
| 917 | change_attributes(inode, &outarg.attr); |
| 918 | inode->i_version = version; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 919 | entry->d_time = time_to_jiffies(outarg.entry_valid, |
| 920 | outarg.entry_valid_nsec); |
Miklos Szeredi | 069c950 | 2004-07-16 16:17:02 +0000 | [diff] [blame] | 921 | fi->i_time = time_to_jiffies(outarg.attr_valid, |
| 922 | outarg.attr_valid_nsec); |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 923 | } |
| 924 | return 1; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 925 | } |
| 926 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 927 | #ifdef KERNEL_2_6 |
| 928 | |
| 929 | #define fuse_mknod _fuse_mknod |
| 930 | |
| 931 | static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry, |
| 932 | struct kstat *stat) |
| 933 | { |
| 934 | struct inode *inode = entry->d_inode; |
| 935 | int err = fuse_revalidate(entry); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 936 | if (!err) |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 937 | generic_fillattr(inode, stat); |
| 938 | |
| 939 | return err; |
| 940 | } |
| 941 | |
| 942 | static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry, |
| 943 | struct nameidata *nd) |
| 944 | { |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 945 | struct inode *inode; |
| 946 | int err = fuse_lookup_iget(dir, entry, &inode); |
| 947 | if (err) |
| 948 | return ERR_PTR(err); |
| 949 | return d_splice_alias(inode, entry); |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 950 | } |
| 951 | |
| 952 | static int fuse_create(struct inode *dir, struct dentry *entry, int mode, |
| 953 | struct nameidata *nd) |
| 954 | { |
| 955 | return _fuse_create(dir, entry, mode); |
| 956 | } |
| 957 | |
| 958 | static int fuse_permission(struct inode *inode, int mask, |
| 959 | struct nameidata *nd) |
| 960 | { |
| 961 | return _fuse_permission(inode, mask); |
| 962 | } |
| 963 | |
| 964 | static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd) |
| 965 | { |
| 966 | return _fuse_dentry_revalidate(entry); |
| 967 | } |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 968 | |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 969 | #else /* KERNEL_2_6 */ |
| 970 | |
| 971 | #define fuse_create _fuse_create |
| 972 | #define fuse_permission _fuse_permission |
| 973 | |
| 974 | static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry) |
| 975 | { |
| 976 | struct inode *inode; |
| 977 | struct dentry *alias; |
| 978 | |
| 979 | int err = fuse_lookup_iget(dir, entry, &inode); |
| 980 | if (err) |
| 981 | return ERR_PTR(err); |
| 982 | |
| 983 | if (inode && S_ISDIR(inode->i_mode) && |
| 984 | (alias = d_find_alias(inode)) != NULL) { |
| 985 | dput(alias); |
| 986 | iput(inode); |
| 987 | printk("fuse: cannot assign an existing directory\n"); |
| 988 | return ERR_PTR(-EPROTO); |
| 989 | } |
| 990 | |
| 991 | d_add(entry, inode); |
| 992 | return NULL; |
| 993 | } |
| 994 | |
| 995 | static int fuse_mknod(struct inode *dir, struct dentry *entry, int mode, |
| 996 | int rdev) |
| 997 | { |
Miklos Szeredi | ad051c3 | 2004-07-02 09:22:50 +0000 | [diff] [blame] | 998 | return _fuse_mknod(dir, entry, mode, rdev); |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 999 | } |
| 1000 | |
| 1001 | static int fuse_dentry_revalidate(struct dentry *entry, int flags) |
| 1002 | { |
| 1003 | return _fuse_dentry_revalidate(entry); |
| 1004 | } |
| 1005 | #endif /* KERNEL_2_6 */ |
| 1006 | |
| 1007 | #ifdef HAVE_KERNEL_XATTR |
| 1008 | |
| 1009 | #ifdef KERNEL_2_6 |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1010 | static int fuse_setxattr(struct dentry *entry, const char *name, |
| 1011 | const void *value, size_t size, int flags) |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1012 | #else |
| 1013 | static int fuse_setxattr(struct dentry *entry, const char *name, |
| 1014 | void *value, size_t size, int flags) |
| 1015 | #endif |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1016 | { |
| 1017 | struct inode *inode = entry->d_inode; |
| 1018 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 1019 | struct fuse_inode *fi = INO_FI(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1020 | struct fuse_req *req; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1021 | struct fuse_setxattr_in inarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1022 | int err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1023 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 1024 | if (size > FUSE_XATTR_SIZE_MAX) |
| 1025 | return -E2BIG; |
| 1026 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1027 | if (fc->no_setxattr) |
| 1028 | return -EOPNOTSUPP; |
| 1029 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1030 | req = fuse_get_request(fc); |
| 1031 | if (!req) |
| 1032 | return -ERESTARTSYS; |
| 1033 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1034 | memset(&inarg, 0, sizeof(inarg)); |
| 1035 | inarg.size = size; |
| 1036 | inarg.flags = flags; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1037 | req->in.h.opcode = FUSE_SETXATTR; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 1038 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1039 | req->in.numargs = 3; |
| 1040 | req->in.args[0].size = sizeof(inarg); |
| 1041 | req->in.args[0].value = &inarg; |
| 1042 | req->in.args[1].size = strlen(name) + 1; |
| 1043 | req->in.args[1].value = name; |
| 1044 | req->in.args[2].size = size; |
| 1045 | req->in.args[2].value = value; |
| 1046 | request_send(fc, req); |
| 1047 | err = req->out.h.error; |
| 1048 | if (err == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1049 | fc->no_setxattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1050 | err = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1051 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1052 | fuse_put_request(fc, req); |
| 1053 | return err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1054 | } |
| 1055 | |
| 1056 | static ssize_t fuse_getxattr(struct dentry *entry, const char *name, |
| 1057 | void *value, size_t size) |
| 1058 | { |
| 1059 | struct inode *inode = entry->d_inode; |
| 1060 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 1061 | struct fuse_inode *fi = INO_FI(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1062 | struct fuse_req *req; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1063 | struct fuse_getxattr_in inarg; |
| 1064 | struct fuse_getxattr_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1065 | ssize_t ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1066 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1067 | if (fc->no_getxattr) |
| 1068 | return -EOPNOTSUPP; |
| 1069 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1070 | req = fuse_get_request(fc); |
| 1071 | if (!req) |
| 1072 | return -ERESTARTSYS; |
| 1073 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1074 | memset(&inarg, 0, sizeof(inarg)); |
| 1075 | inarg.size = size; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1076 | req->in.h.opcode = FUSE_GETXATTR; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 1077 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1078 | req->in.numargs = 2; |
| 1079 | req->in.args[0].size = sizeof(inarg); |
| 1080 | req->in.args[0].value = &inarg; |
| 1081 | req->in.args[1].size = strlen(name) + 1; |
| 1082 | req->in.args[1].value = name; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1083 | /* This is really two different operations rolled into one */ |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1084 | req->out.numargs = 1; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 1085 | if (size) { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1086 | req->out.argvar = 1; |
| 1087 | req->out.args[0].size = size; |
| 1088 | req->out.args[0].value = value; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1089 | } else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1090 | req->out.args[0].size = sizeof(outarg); |
| 1091 | req->out.args[0].value = &outarg; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1092 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1093 | request_send(fc, req); |
| 1094 | ret = req->out.h.error; |
| 1095 | if (!ret) |
| 1096 | ret = size ? req->out.args[0].size : outarg.size; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1097 | else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1098 | if (ret == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1099 | fc->no_getxattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1100 | ret = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1101 | } |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1102 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1103 | fuse_put_request(fc, req); |
| 1104 | return ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1105 | } |
| 1106 | |
| 1107 | static ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size) |
| 1108 | { |
| 1109 | struct inode *inode = entry->d_inode; |
| 1110 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 1111 | struct fuse_inode *fi = INO_FI(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1112 | struct fuse_req *req; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1113 | struct fuse_getxattr_in inarg; |
| 1114 | struct fuse_getxattr_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1115 | ssize_t ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1116 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1117 | if (fc->no_listxattr) |
| 1118 | return -EOPNOTSUPP; |
| 1119 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1120 | req = fuse_get_request(fc); |
| 1121 | if (!req) |
| 1122 | return -ERESTARTSYS; |
| 1123 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1124 | memset(&inarg, 0, sizeof(inarg)); |
| 1125 | inarg.size = size; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1126 | req->in.h.opcode = FUSE_LISTXATTR; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 1127 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1128 | req->in.numargs = 1; |
| 1129 | req->in.args[0].size = sizeof(inarg); |
| 1130 | req->in.args[0].value = &inarg; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1131 | /* This is really two different operations rolled into one */ |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1132 | req->out.numargs = 1; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 1133 | if (size) { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1134 | req->out.argvar = 1; |
| 1135 | req->out.args[0].size = size; |
| 1136 | req->out.args[0].value = list; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1137 | } else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1138 | req->out.args[0].size = sizeof(outarg); |
| 1139 | req->out.args[0].value = &outarg; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 1140 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1141 | request_send(fc, req); |
| 1142 | ret = req->out.h.error; |
| 1143 | if (!ret) |
| 1144 | ret = size ? req->out.args[0].size : outarg.size; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1145 | else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1146 | if (ret == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1147 | fc->no_listxattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1148 | ret = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1149 | } |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1150 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1151 | fuse_put_request(fc, req); |
| 1152 | return ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1153 | } |
| 1154 | |
| 1155 | static int fuse_removexattr(struct dentry *entry, const char *name) |
| 1156 | { |
| 1157 | struct inode *inode = entry->d_inode; |
| 1158 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 1159 | struct fuse_inode *fi = INO_FI(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1160 | struct fuse_req *req; |
| 1161 | int err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1162 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1163 | if (fc->no_removexattr) |
| 1164 | return -EOPNOTSUPP; |
| 1165 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1166 | req = fuse_get_request(fc); |
| 1167 | if (!req) |
| 1168 | return -ERESTARTSYS; |
| 1169 | |
| 1170 | req->in.h.opcode = FUSE_REMOVEXATTR; |
Miklos Szeredi | a13d900 | 2004-11-02 17:32:03 +0000 | [diff] [blame^] | 1171 | req->in.h.nodeid = fi->nodeid; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1172 | req->in.numargs = 1; |
| 1173 | req->in.args[0].size = strlen(name) + 1; |
| 1174 | req->in.args[0].value = name; |
| 1175 | request_send(fc, req); |
| 1176 | err = req->out.h.error; |
| 1177 | if (err == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1178 | fc->no_removexattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1179 | err = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1180 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1181 | fuse_put_request(fc, req); |
| 1182 | return err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1183 | } |
| 1184 | |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1185 | #endif |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1186 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1187 | static struct inode_operations fuse_dir_inode_operations = |
| 1188 | { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1189 | .lookup = fuse_lookup, |
| 1190 | .create = fuse_create, |
| 1191 | .mknod = fuse_mknod, |
| 1192 | .mkdir = fuse_mkdir, |
| 1193 | .symlink = fuse_symlink, |
| 1194 | .unlink = fuse_unlink, |
| 1195 | .rmdir = fuse_rmdir, |
| 1196 | .rename = fuse_rename, |
| 1197 | .link = fuse_link, |
| 1198 | .setattr = fuse_setattr, |
| 1199 | .permission = fuse_permission, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1200 | #ifdef KERNEL_2_6 |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1201 | .getattr = fuse_getattr, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1202 | #else |
| 1203 | .revalidate = fuse_revalidate, |
| 1204 | #endif |
| 1205 | #ifdef HAVE_KERNEL_XATTR |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1206 | .setxattr = fuse_setxattr, |
| 1207 | .getxattr = fuse_getxattr, |
| 1208 | .listxattr = fuse_listxattr, |
| 1209 | .removexattr = fuse_removexattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1210 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1211 | }; |
| 1212 | |
| 1213 | static struct file_operations fuse_dir_operations = { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1214 | .read = generic_read_dir, |
| 1215 | .readdir = fuse_readdir, |
| 1216 | .open = fuse_dir_open, |
| 1217 | .release = fuse_dir_release, |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1218 | }; |
| 1219 | |
| 1220 | static struct inode_operations fuse_file_inode_operations = { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1221 | .setattr = fuse_setattr, |
| 1222 | .permission = fuse_permission, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1223 | #ifdef KERNEL_2_6 |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1224 | .getattr = fuse_getattr, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1225 | #else |
| 1226 | .revalidate = fuse_revalidate, |
| 1227 | #endif |
| 1228 | #ifdef HAVE_KERNEL_XATTR |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1229 | .setxattr = fuse_setxattr, |
| 1230 | .getxattr = fuse_getxattr, |
| 1231 | .listxattr = fuse_listxattr, |
| 1232 | .removexattr = fuse_removexattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1233 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1234 | }; |
| 1235 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1236 | static struct inode_operations fuse_symlink_inode_operations = |
| 1237 | { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1238 | .setattr = fuse_setattr, |
| 1239 | .readlink = fuse_readlink, |
| 1240 | .follow_link = fuse_follow_link, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1241 | #ifdef KERNEL_2_6 |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1242 | .getattr = fuse_getattr, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1243 | #else |
| 1244 | .revalidate = fuse_revalidate, |
| 1245 | #endif |
| 1246 | #ifdef HAVE_KERNEL_XATTR |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1247 | .setxattr = fuse_setxattr, |
| 1248 | .getxattr = fuse_getxattr, |
| 1249 | .listxattr = fuse_listxattr, |
| 1250 | .removexattr = fuse_removexattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1251 | #endif |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 1252 | }; |
| 1253 | |
Miklos Szeredi | 307242f | 2004-01-26 11:28:44 +0000 | [diff] [blame] | 1254 | static struct dentry_operations fuse_dentry_operations = { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1255 | .d_revalidate = fuse_dentry_revalidate, |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1256 | }; |
| 1257 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1258 | /* |
| 1259 | * Local Variables: |
| 1260 | * indent-tabs-mode: t |
| 1261 | * c-basic-offset: 8 |
| 1262 | * End: |
| 1263 | */ |