Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1 | /* |
| 2 | FUSE: Filesystem in Userspace |
| 3 | Copyright (C) 2001 Miklos Szeredi (mszeredi@inf.bme.hu) |
| 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 | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 38 | inode->i_mode = (inode->i_mode & S_IFMT) + (attr->mode & 07777); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 39 | inode->i_nlink = attr->nlink; |
| 40 | inode->i_uid = attr->uid; |
| 41 | inode->i_gid = attr->gid; |
Miklos Szeredi | d1199f8 | 2004-02-06 15:29:22 +0000 | [diff] [blame] | 42 | i_size_write(inode, attr->size); |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 43 | inode->i_blksize = PAGE_CACHE_SIZE; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 44 | inode->i_blocks = attr->blocks; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 45 | #ifdef KERNEL_2_6 |
| 46 | inode->i_atime.tv_sec = attr->atime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 47 | inode->i_atime.tv_nsec = attr->atimensec; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 48 | inode->i_mtime.tv_sec = attr->mtime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 49 | inode->i_mtime.tv_nsec = attr->mtimensec; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 50 | inode->i_ctime.tv_sec = attr->ctime; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 51 | inode->i_ctime.tv_nsec = attr->ctimensec; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 52 | #else |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 53 | inode->i_atime = attr->atime; |
| 54 | inode->i_mtime = attr->mtime; |
| 55 | inode->i_ctime = attr->ctime; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 56 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 57 | } |
| 58 | |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 59 | static void fuse_init_inode(struct inode *inode, struct fuse_attr *attr) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 60 | { |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 61 | inode->i_mode = attr->mode & S_IFMT; |
Miklos Szeredi | d1199f8 | 2004-02-06 15:29:22 +0000 | [diff] [blame] | 62 | i_size_write(inode, attr->size); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 63 | if (S_ISREG(inode->i_mode)) { |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 64 | inode->i_op = &fuse_file_inode_operations; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 65 | fuse_init_file_inode(inode); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 66 | } |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 67 | else if (S_ISDIR(inode->i_mode)) { |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 68 | inode->i_op = &fuse_dir_inode_operations; |
| 69 | inode->i_fop = &fuse_dir_operations; |
| 70 | } |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 71 | else if (S_ISLNK(inode->i_mode)) { |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 72 | inode->i_op = &fuse_symlink_inode_operations; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 73 | } |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 74 | else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || |
| 75 | S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)){ |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 76 | inode->i_op = &fuse_file_inode_operations; |
Miklos Szeredi | 7c35cf9 | 2004-01-14 16:56:49 +0000 | [diff] [blame] | 77 | init_special_inode(inode, inode->i_mode, |
| 78 | new_decode_dev(attr->rdev)); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 79 | } else |
| 80 | printk("fuse_init_inode: bad file type: %o\n", inode->i_mode); |
| 81 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 82 | inode->u.generic_ip = inode; |
| 83 | } |
| 84 | |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 85 | struct inode *fuse_iget(struct super_block *sb, ino_t ino, int generation, |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 86 | struct fuse_attr *attr, int version) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 87 | { |
| 88 | struct inode *inode; |
| 89 | |
| 90 | inode = iget(sb, ino); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 91 | if (inode) { |
| 92 | if (!inode->u.generic_ip) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 93 | inode->i_generation = generation; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 94 | fuse_init_inode(inode, attr); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 95 | } else if (inode->i_generation != generation) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 96 | printk("fuse_iget: bad generation for ino %lu\n", ino); |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 97 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 98 | change_attributes(inode, attr); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 99 | inode->i_version = version; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | return inode; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 103 | } |
| 104 | |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 105 | static int fuse_send_lookup(struct fuse_conn *fc, struct fuse_req *req, |
| 106 | struct inode *dir, struct dentry *entry, |
| 107 | struct fuse_entry_out *outarg, int *version) |
| 108 | { |
| 109 | req->in.h.opcode = FUSE_LOOKUP; |
| 110 | req->in.h.ino = dir->i_ino; |
| 111 | req->in.numargs = 1; |
| 112 | req->in.args[0].size = entry->d_name.len + 1; |
| 113 | req->in.args[0].value = entry->d_name.name; |
| 114 | req->out.numargs = 1; |
| 115 | req->out.args[0].size = sizeof(struct fuse_entry_out); |
| 116 | req->out.args[0].value = outarg; |
| 117 | request_send(fc, req); |
| 118 | *version = req->out.h.unique; |
| 119 | return req->out.h.error; |
| 120 | } |
| 121 | |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 122 | static int fuse_do_lookup(struct inode *dir, struct dentry *entry, |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 123 | struct fuse_entry_out *outarg, int *version) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 124 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 125 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 126 | struct fuse_req *req; |
| 127 | int err; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 128 | |
| 129 | if (entry->d_name.len > FUSE_NAME_MAX) |
| 130 | return -ENAMETOOLONG; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 131 | req = fuse_get_request(fc); |
| 132 | if (!req) |
| 133 | return -ERESTARTSYS; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 134 | |
| 135 | err = fuse_send_lookup(fc, req, dir, entry, outarg, version); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 136 | fuse_put_request(fc, req); |
| 137 | return err; |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 138 | } |
| 139 | |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 140 | static inline unsigned long time_to_jiffies(unsigned long sec, |
| 141 | unsigned long nsec) |
| 142 | { |
| 143 | /* prevent wrapping of jiffies */ |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 144 | if (sec + 1 >= LONG_MAX / HZ) |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 145 | return 0; |
| 146 | |
| 147 | return jiffies + sec * HZ + nsec / (1000000000 / HZ); |
| 148 | } |
| 149 | |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 150 | static int fuse_lookup_iget(struct inode *dir, struct dentry *entry, |
| 151 | struct inode **inodep) |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 152 | { |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 153 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 154 | int err; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 155 | struct fuse_entry_out outarg; |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 156 | int version; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 157 | struct inode *inode = NULL; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 158 | struct fuse_req *req; |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 159 | |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 160 | if (entry->d_name.len > FUSE_NAME_MAX) |
| 161 | return -ENAMETOOLONG; |
| 162 | req = fuse_get_request(fc); |
| 163 | if (!req) |
| 164 | return -ERESTARTSYS; |
| 165 | |
| 166 | err = fuse_send_lookup(fc, req, dir, entry, &outarg, &version); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 167 | if (!err) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 168 | inode = fuse_iget(dir->i_sb, outarg.ino, outarg.generation, |
| 169 | &outarg.attr, version); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 170 | if (!inode) { |
| 171 | fuse_send_forget(fc, req, outarg.ino, version); |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 172 | return -ENOMEM; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 173 | } |
| 174 | } |
| 175 | fuse_put_request(fc, req); |
| 176 | if (err && err != -ENOENT) |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 177 | return err; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 178 | |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 179 | entry->d_time = time_to_jiffies(outarg.entry_valid, |
| 180 | outarg.entry_valid_nsec); |
Miklos Szeredi | 307242f | 2004-01-26 11:28:44 +0000 | [diff] [blame] | 181 | entry->d_op = &fuse_dentry_operations; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 182 | *inodep = inode; |
| 183 | return 0; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 184 | } |
| 185 | |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 186 | static int lookup_new_entry(struct fuse_conn *fc, struct fuse_req *req, |
| 187 | struct inode *dir, struct dentry *entry, |
| 188 | struct fuse_entry_out *outarg, int version, |
| 189 | int mode) |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 190 | { |
| 191 | struct inode *inode; |
| 192 | inode = fuse_iget(dir->i_sb, outarg->ino, outarg->generation, |
| 193 | &outarg->attr, version); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 194 | if (!inode) { |
| 195 | fuse_send_forget(fc, req, outarg->ino, version); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 196 | return -ENOMEM; |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 197 | } |
| 198 | fuse_put_request(fc, req); |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 199 | |
| 200 | /* Don't allow userspace to do really stupid things... */ |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 201 | if ((inode->i_mode ^ mode) & S_IFMT) { |
Miklos Szeredi | 76f6578 | 2004-02-19 16:55:40 +0000 | [diff] [blame] | 202 | iput(inode); |
| 203 | printk("fuse_mknod: inode has wrong type\n"); |
| 204 | return -EINVAL; |
| 205 | } |
| 206 | |
| 207 | d_instantiate(entry, inode); |
| 208 | return 0; |
| 209 | } |
| 210 | |
| 211 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 212 | static int _fuse_mknod(struct inode *dir, struct dentry *entry, int mode, |
| 213 | dev_t rdev) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 214 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 215 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 216 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 217 | struct fuse_mknod_in inarg; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 218 | struct fuse_entry_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 219 | int err; |
| 220 | |
| 221 | if (!req) |
| 222 | return -ERESTARTSYS; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 223 | |
| 224 | memset(&inarg, 0, sizeof(inarg)); |
| 225 | inarg.mode = mode; |
Miklos Szeredi | 7c35cf9 | 2004-01-14 16:56:49 +0000 | [diff] [blame] | 226 | inarg.rdev = new_encode_dev(rdev); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 227 | req->in.h.opcode = FUSE_MKNOD; |
| 228 | req->in.h.ino = dir->i_ino; |
| 229 | req->in.numargs = 2; |
| 230 | req->in.args[0].size = sizeof(inarg); |
| 231 | req->in.args[0].value = &inarg; |
| 232 | req->in.args[1].size = entry->d_name.len + 1; |
| 233 | req->in.args[1].value = entry->d_name.name; |
| 234 | req->out.numargs = 1; |
| 235 | req->out.args[0].size = sizeof(outarg); |
| 236 | req->out.args[0].value = &outarg; |
| 237 | request_send(fc, req); |
| 238 | err = req->out.h.error; |
| 239 | if (!err) |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 240 | err = lookup_new_entry(fc, req, dir, entry, &outarg, |
| 241 | req->out.h.unique, mode); |
| 242 | else |
| 243 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 244 | return err; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 245 | } |
| 246 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 247 | static int _fuse_create(struct inode *dir, struct dentry *entry, int mode) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 248 | { |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 249 | return _fuse_mknod(dir, entry, mode, 0); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 250 | } |
| 251 | |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 252 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 253 | static int fuse_mkdir(struct inode *dir, struct dentry *entry, int mode) |
| 254 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 255 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 256 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 257 | struct fuse_mkdir_in inarg; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 258 | struct fuse_entry_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 259 | int err; |
| 260 | |
| 261 | if (!req) |
| 262 | return -ERESTARTSYS; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 263 | |
| 264 | memset(&inarg, 0, sizeof(inarg)); |
| 265 | inarg.mode = mode; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 266 | req->in.h.opcode = FUSE_MKDIR; |
| 267 | req->in.h.ino = dir->i_ino; |
| 268 | req->in.numargs = 2; |
| 269 | req->in.args[0].size = sizeof(inarg); |
| 270 | req->in.args[0].value = &inarg; |
| 271 | req->in.args[1].size = entry->d_name.len + 1; |
| 272 | req->in.args[1].value = entry->d_name.name; |
| 273 | req->out.numargs = 1; |
| 274 | req->out.args[0].size = sizeof(outarg); |
| 275 | req->out.args[0].value = &outarg; |
| 276 | request_send(fc, req); |
| 277 | err = req->out.h.error; |
| 278 | if (!err) |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 279 | err = lookup_new_entry(fc, req, dir, entry, &outarg, |
| 280 | req->out.h.unique, S_IFDIR); |
| 281 | else |
| 282 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 283 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | static int fuse_symlink(struct inode *dir, struct dentry *entry, |
| 287 | const char *link) |
| 288 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 289 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 290 | struct fuse_req *req; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 291 | struct fuse_entry_out outarg; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 292 | unsigned int len = strlen(link) + 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 293 | int err; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 294 | |
| 295 | if (len > FUSE_SYMLINK_MAX) |
| 296 | return -ENAMETOOLONG; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 297 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 298 | req = fuse_get_request(fc); |
| 299 | if (!req) |
| 300 | return -ERESTARTSYS; |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 301 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 302 | req->in.h.opcode = FUSE_SYMLINK; |
| 303 | req->in.h.ino = dir->i_ino; |
| 304 | req->in.numargs = 2; |
| 305 | req->in.args[0].size = entry->d_name.len + 1; |
| 306 | req->in.args[0].value = entry->d_name.name; |
| 307 | req->in.args[1].size = len; |
| 308 | req->in.args[1].value = link; |
| 309 | req->out.numargs = 1; |
| 310 | req->out.args[0].size = sizeof(outarg); |
| 311 | req->out.args[0].value = &outarg; |
| 312 | request_send(fc, req); |
| 313 | err = req->out.h.error; |
| 314 | if (!err) |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 315 | err = lookup_new_entry(fc, req, dir, entry, &outarg, |
| 316 | req->out.h.unique, S_IFLNK); |
| 317 | else |
| 318 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 319 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 320 | } |
| 321 | |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 322 | static int fuse_unlink(struct inode *dir, struct dentry *entry) |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 323 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 324 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 325 | struct fuse_req *req = fuse_get_request(fc); |
| 326 | int err; |
| 327 | |
| 328 | if (!req) |
| 329 | return -ERESTARTSYS; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 330 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 331 | req->in.h.opcode = FUSE_UNLINK; |
| 332 | req->in.h.ino = dir->i_ino; |
| 333 | req->in.numargs = 1; |
| 334 | req->in.args[0].size = entry->d_name.len + 1; |
| 335 | req->in.args[0].value = entry->d_name.name; |
| 336 | request_send(fc, req); |
| 337 | err = req->out.h.error; |
| 338 | if (!err) { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 339 | /* Set nlink to zero so the inode can be cleared, if |
| 340 | the inode does have more links this will be |
| 341 | discovered at the next lookup/getattr */ |
| 342 | /* FIXME: mark inode "not uptodate" */ |
| 343 | entry->d_inode->i_nlink = 0; |
Miklos Szeredi | f4f8b89 | 2004-01-27 17:04:59 +0000 | [diff] [blame] | 344 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 345 | fuse_put_request(fc, req); |
| 346 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | static int fuse_rmdir(struct inode *dir, struct dentry *entry) |
| 350 | { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 351 | struct fuse_conn *fc = INO_FC(dir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 352 | struct fuse_req *req = fuse_get_request(fc); |
| 353 | int err; |
| 354 | |
| 355 | if (!req) |
| 356 | return -ERESTARTSYS; |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 357 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 358 | req->in.h.opcode = FUSE_RMDIR; |
| 359 | req->in.h.ino = dir->i_ino; |
| 360 | req->in.numargs = 1; |
| 361 | req->in.args[0].size = entry->d_name.len + 1; |
| 362 | req->in.args[0].value = entry->d_name.name; |
| 363 | request_send(fc, req); |
| 364 | err = req->out.h.error; |
| 365 | if (!err) |
Miklos Szeredi | f4f8b89 | 2004-01-27 17:04:59 +0000 | [diff] [blame] | 366 | entry->d_inode->i_nlink = 0; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 367 | fuse_put_request(fc, req); |
| 368 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 369 | } |
| 370 | |
| 371 | static int fuse_rename(struct inode *olddir, struct dentry *oldent, |
| 372 | struct inode *newdir, struct dentry *newent) |
| 373 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 374 | struct fuse_conn *fc = INO_FC(olddir); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 375 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 376 | struct fuse_rename_in inarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 377 | int err; |
| 378 | |
| 379 | if (!req) |
| 380 | return -ERESTARTSYS; |
| 381 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 382 | memset(&inarg, 0, sizeof(inarg)); |
| 383 | inarg.newdir = newdir->i_ino; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 384 | req->in.h.opcode = FUSE_RENAME; |
| 385 | req->in.h.ino = olddir->i_ino; |
| 386 | req->in.numargs = 3; |
| 387 | req->in.args[0].size = sizeof(inarg); |
| 388 | req->in.args[0].value = &inarg; |
| 389 | req->in.args[1].size = oldent->d_name.len + 1; |
| 390 | req->in.args[1].value = oldent->d_name.name; |
| 391 | req->in.args[2].size = newent->d_name.len + 1; |
| 392 | req->in.args[2].value = newent->d_name.name; |
| 393 | request_send(fc, req); |
| 394 | err = req->out.h.error; |
| 395 | fuse_put_request(fc, req); |
| 396 | return err; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | static int fuse_link(struct dentry *entry, struct inode *newdir, |
| 400 | struct dentry *newent) |
| 401 | { |
| 402 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 403 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 404 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 405 | struct fuse_link_in inarg; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 406 | struct fuse_entry_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 407 | int err; |
| 408 | |
| 409 | if (!req) |
| 410 | return -ERESTARTSYS; |
| 411 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 412 | memset(&inarg, 0, sizeof(inarg)); |
| 413 | inarg.newdir = newdir->i_ino; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 414 | req->in.h.opcode = FUSE_LINK; |
| 415 | req->in.h.ino = inode->i_ino; |
| 416 | req->in.numargs = 2; |
| 417 | req->in.args[0].size = sizeof(inarg); |
| 418 | req->in.args[0].value = &inarg; |
| 419 | req->in.args[1].size = newent->d_name.len + 1; |
| 420 | req->in.args[1].value = newent->d_name.name; |
| 421 | req->out.numargs = 1; |
| 422 | req->out.args[0].size = sizeof(outarg); |
| 423 | req->out.args[0].value = &outarg; |
| 424 | request_send(fc, req); |
| 425 | err = req->out.h.error; |
| 426 | if (!err) { |
| 427 | /* Invalidate old entry, so attributes are refreshed */ |
| 428 | d_invalidate(entry); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 429 | err = lookup_new_entry(fc, req, newdir, newent, &outarg, |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 430 | req->out.h.unique, inode->i_mode); |
Miklos Szeredi | 2778f6c | 2004-06-21 09:45:30 +0000 | [diff] [blame^] | 431 | } else |
| 432 | fuse_put_request(fc, req); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 433 | return err; |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 434 | } |
| 435 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 436 | int fuse_do_getattr(struct inode *inode) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 437 | { |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 438 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 439 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 440 | struct fuse_attr_out arg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 441 | int err; |
| 442 | |
| 443 | if (!req) |
| 444 | return -ERESTARTSYS; |
| 445 | |
| 446 | req->in.h.opcode = FUSE_GETATTR; |
| 447 | req->in.h.ino = inode->i_ino; |
| 448 | req->out.numargs = 1; |
| 449 | req->out.args[0].size = sizeof(arg); |
| 450 | req->out.args[0].value = &arg; |
| 451 | request_send(fc, req); |
| 452 | err = req->out.h.error; |
| 453 | if (!err) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 454 | change_attributes(inode, &arg.attr); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 455 | fuse_put_request(fc, req); |
| 456 | return err; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 457 | } |
| 458 | |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 459 | static int fuse_revalidate(struct dentry *entry) |
| 460 | { |
| 461 | struct inode *inode = entry->d_inode; |
| 462 | struct fuse_conn *fc = INO_FC(inode); |
| 463 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 464 | if (inode->i_ino == FUSE_ROOT_INO) { |
| 465 | if (!(fc->flags & FUSE_ALLOW_OTHER) && |
| 466 | current->fsuid != fc->uid) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 467 | return -EACCES; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 468 | } else if (!entry->d_time || time_before_eq(jiffies, entry->d_time)) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 469 | return 0; |
| 470 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 471 | return fuse_do_getattr(inode); |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 472 | } |
| 473 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 474 | static int _fuse_permission(struct inode *inode, int mask) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 475 | { |
| 476 | struct fuse_conn *fc = INO_FC(inode); |
| 477 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 478 | if (!(fc->flags & FUSE_ALLOW_OTHER) && current->fsuid != fc->uid) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 479 | return -EACCES; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 480 | else if (fc->flags & FUSE_DEFAULT_PERMISSIONS) { |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 481 | int err = vfs_permission(inode, mask); |
| 482 | |
| 483 | /* If permission is denied, try to refresh file |
| 484 | attributes. This is also needed, because the root |
| 485 | node will at first have no permissions */ |
| 486 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 487 | if (err == -EACCES) { |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 488 | err = fuse_do_getattr(inode); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 489 | if (!err) |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 490 | err = vfs_permission(inode, mask); |
| 491 | } |
| 492 | |
| 493 | /* FIXME: Need some mechanism to revoke permissions: |
| 494 | currently if the filesystem suddenly changes the |
| 495 | file mode, we will not be informed abot that, and |
| 496 | continue to allow access to the file/directory. |
| 497 | |
| 498 | This is actually not so grave, since the user can |
| 499 | simply keep access to the file/directory anyway by |
| 500 | keeping it open... */ |
| 501 | |
| 502 | return err; |
Miklos Szeredi | 69cc79a | 2004-02-17 08:57:29 +0000 | [diff] [blame] | 503 | } else |
Miklos Szeredi | fe25def | 2001-12-20 15:38:05 +0000 | [diff] [blame] | 504 | return 0; |
| 505 | } |
| 506 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 507 | static int parse_dirfile(char *buf, size_t nbytes, struct file *file, |
| 508 | void *dstbuf, filldir_t filldir) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 509 | { |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 510 | while (nbytes >= FUSE_NAME_OFFSET) { |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 511 | struct fuse_dirent *dirent = (struct fuse_dirent *) buf; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 512 | size_t reclen = FUSE_DIRENT_SIZE(dirent); |
| 513 | int over; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 514 | if (dirent->namelen > NAME_MAX) { |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 515 | printk("fuse_readdir: name too long\n"); |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 516 | return -EPROTO; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 517 | } |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 518 | if (reclen > nbytes) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 519 | break; |
| 520 | |
| 521 | over = filldir(dstbuf, dirent->name, dirent->namelen, |
| 522 | file->f_pos, dirent->ino, dirent->type); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 523 | if (over) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 524 | break; |
| 525 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 526 | buf += reclen; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 527 | file->f_pos += reclen; |
| 528 | nbytes -= reclen; |
| 529 | } |
| 530 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 531 | return 0; |
| 532 | } |
| 533 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 534 | static int fuse_checkdir(struct file *cfile, struct file *file) |
| 535 | { |
| 536 | struct inode *inode; |
| 537 | if (!cfile) { |
| 538 | printk("fuse_getdir: invalid file\n"); |
| 539 | return -EPROTO; |
| 540 | } |
| 541 | inode = cfile->f_dentry->d_inode; |
| 542 | if (!S_ISREG(inode->i_mode)) { |
| 543 | printk("fuse_getdir: not a regular file\n"); |
| 544 | fput(cfile); |
| 545 | return -EPROTO; |
| 546 | } |
| 547 | |
| 548 | file->private_data = cfile; |
| 549 | return 0; |
| 550 | } |
| 551 | |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 552 | static int fuse_getdir(struct file *file) |
| 553 | { |
| 554 | struct inode *inode = file->f_dentry->d_inode; |
| 555 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 556 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 557 | struct fuse_getdir_out_i outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 558 | int err; |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 559 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 560 | if (!req) |
| 561 | return -ERESTARTSYS; |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 562 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 563 | req->in.h.opcode = FUSE_GETDIR; |
| 564 | req->in.h.ino = inode->i_ino; |
| 565 | req->out.numargs = 1; |
| 566 | req->out.args[0].size = sizeof(struct fuse_getdir_out); |
| 567 | req->out.args[0].value = &outarg; |
| 568 | request_send(fc, req); |
| 569 | err = req->out.h.error; |
| 570 | if (!err) |
| 571 | err = fuse_checkdir(outarg.file, file); |
| 572 | fuse_put_request(fc, req); |
| 573 | return err; |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 574 | } |
| 575 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 576 | #define DIR_BUFSIZE 2048 |
| 577 | static int fuse_readdir(struct file *file, void *dstbuf, filldir_t filldir) |
| 578 | { |
| 579 | struct file *cfile = file->private_data; |
| 580 | char *buf; |
| 581 | int ret; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 582 | |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 583 | if (!cfile) { |
| 584 | ret = fuse_getdir(file); |
| 585 | if (ret) |
| 586 | return ret; |
| 587 | |
| 588 | cfile = file->private_data; |
| 589 | } |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 590 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 591 | buf = kmalloc(DIR_BUFSIZE, GFP_KERNEL); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 592 | if (!buf) |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 593 | return -ENOMEM; |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 594 | |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 595 | ret = kernel_read(cfile, file->f_pos, buf, DIR_BUFSIZE); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 596 | if (ret < 0) |
Miklos Szeredi | b483c93 | 2001-10-29 14:57:57 +0000 | [diff] [blame] | 597 | printk("fuse_readdir: failed to read container file\n"); |
| 598 | else |
| 599 | ret = parse_dirfile(buf, ret, file, dstbuf, filldir); |
| 600 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 601 | kfree(buf); |
| 602 | return ret; |
| 603 | } |
| 604 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 605 | static char *read_link(struct dentry *dentry) |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 606 | { |
| 607 | struct inode *inode = dentry->d_inode; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 608 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 609 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 610 | char *link; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 611 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 612 | if (!req) |
| 613 | return ERR_PTR(-ERESTARTSYS); |
| 614 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 615 | link = (char *) __get_free_page(GFP_KERNEL); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 616 | if (!link) { |
| 617 | link = ERR_PTR(-ENOMEM); |
| 618 | goto out; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 619 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 620 | req->in.h.opcode = FUSE_READLINK; |
| 621 | req->in.h.ino = inode->i_ino; |
| 622 | req->out.argvar = 1; |
| 623 | req->out.numargs = 1; |
| 624 | req->out.args[0].size = PAGE_SIZE - 1; |
| 625 | req->out.args[0].value = link; |
| 626 | request_send(fc, req); |
| 627 | if (req->out.h.error) { |
| 628 | free_page((unsigned long) link); |
| 629 | link = ERR_PTR(req->out.h.error); |
| 630 | } else |
| 631 | link[req->out.args[0].size] = '\0'; |
| 632 | out: |
| 633 | fuse_put_request(fc, req); |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 634 | return link; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 635 | } |
| 636 | |
| 637 | static void free_link(char *link) |
| 638 | { |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 639 | if (!IS_ERR(link)) |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 640 | free_page((unsigned long) link); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 641 | } |
| 642 | |
| 643 | static int fuse_readlink(struct dentry *dentry, char *buffer, int buflen) |
| 644 | { |
| 645 | int ret; |
| 646 | char *link; |
| 647 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 648 | link = read_link(dentry); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 649 | ret = vfs_readlink(dentry, buffer, buflen, link); |
| 650 | free_link(link); |
| 651 | return ret; |
| 652 | } |
| 653 | |
| 654 | static int fuse_follow_link(struct dentry *dentry, struct nameidata *nd) |
| 655 | { |
| 656 | int ret; |
| 657 | char *link; |
| 658 | |
Miklos Szeredi | 0503304 | 2001-11-13 16:11:35 +0000 | [diff] [blame] | 659 | link = read_link(dentry); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 660 | ret = vfs_follow_link(nd, link); |
| 661 | free_link(link); |
| 662 | return ret; |
| 663 | } |
| 664 | |
| 665 | static int fuse_dir_open(struct inode *inode, struct file *file) |
| 666 | { |
Miklos Szeredi | 152f29e | 2004-06-03 17:52:32 +0000 | [diff] [blame] | 667 | file->private_data = NULL; |
| 668 | return 0; |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 669 | } |
| 670 | |
| 671 | static int fuse_dir_release(struct inode *inode, struct file *file) |
| 672 | { |
| 673 | struct file *cfile = file->private_data; |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 674 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 675 | if (cfile) |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 676 | fput(cfile); |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 677 | |
| 678 | return 0; |
| 679 | } |
| 680 | |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 681 | static unsigned int iattr_to_fattr(struct iattr *iattr, |
| 682 | struct fuse_attr *fattr) |
| 683 | { |
| 684 | unsigned int ivalid = iattr->ia_valid; |
| 685 | unsigned int fvalid = 0; |
| 686 | |
| 687 | memset(fattr, 0, sizeof(*fattr)); |
| 688 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 689 | if (ivalid & ATTR_MODE) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 690 | fvalid |= FATTR_MODE, fattr->mode = iattr->ia_mode; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 691 | if (ivalid & ATTR_UID) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 692 | fvalid |= FATTR_UID, fattr->uid = iattr->ia_uid; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 693 | if (ivalid & ATTR_GID) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 694 | fvalid |= FATTR_GID, fattr->gid = iattr->ia_gid; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 695 | if (ivalid & ATTR_SIZE) |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 696 | fvalid |= FATTR_SIZE, fattr->size = iattr->ia_size; |
| 697 | /* You can only _set_ these together (they may change by themselves) */ |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 698 | if ((ivalid & (ATTR_ATIME | ATTR_MTIME)) == (ATTR_ATIME | ATTR_MTIME)) { |
Miklos Szeredi | b595861 | 2004-02-20 14:10:49 +0000 | [diff] [blame] | 699 | fvalid |= FATTR_ATIME | FATTR_MTIME; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 700 | #ifdef KERNEL_2_6 |
| 701 | fattr->atime = iattr->ia_atime.tv_sec; |
| 702 | fattr->mtime = iattr->ia_mtime.tv_sec; |
| 703 | #else |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 704 | fattr->atime = iattr->ia_atime; |
| 705 | fattr->mtime = iattr->ia_mtime; |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 706 | #endif |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 707 | } |
| 708 | |
| 709 | return fvalid; |
| 710 | } |
| 711 | |
| 712 | static int fuse_setattr(struct dentry *entry, struct iattr *attr) |
| 713 | { |
| 714 | struct inode *inode = entry->d_inode; |
| 715 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 716 | struct fuse_req *req = fuse_get_request(fc); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 717 | struct fuse_setattr_in inarg; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 718 | struct fuse_attr_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 719 | int err; |
| 720 | |
| 721 | if (!req) |
| 722 | return -ERESTARTSYS; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 723 | |
Miklos Szeredi | 4369643 | 2001-11-18 19:15:05 +0000 | [diff] [blame] | 724 | memset(&inarg, 0, sizeof(inarg)); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 725 | inarg.valid = iattr_to_fattr(attr, &inarg.attr); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 726 | req->in.h.opcode = FUSE_SETATTR; |
| 727 | req->in.h.ino = inode->i_ino; |
| 728 | req->in.numargs = 1; |
| 729 | req->in.args[0].size = sizeof(inarg); |
| 730 | req->in.args[0].value = &inarg; |
| 731 | req->out.numargs = 1; |
| 732 | req->out.args[0].size = sizeof(outarg); |
| 733 | req->out.args[0].value = &outarg; |
| 734 | request_send(fc, req); |
| 735 | err = req->out.h.error; |
| 736 | if (!err) { |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 737 | if (attr->ia_valid & ATTR_SIZE && |
| 738 | outarg.attr.size < i_size_read(inode)) |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 739 | vmtruncate(inode, outarg.attr.size); |
Miklos Szeredi | a181e61 | 2001-11-06 12:03:23 +0000 | [diff] [blame] | 740 | |
Miklos Szeredi | f3ea83b | 2001-11-07 14:55:16 +0000 | [diff] [blame] | 741 | change_attributes(inode, &outarg.attr); |
| 742 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 743 | fuse_put_request(fc, req); |
| 744 | return err; |
Miklos Szeredi | 5e18348 | 2001-10-31 14:52:35 +0000 | [diff] [blame] | 745 | } |
| 746 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 747 | static int _fuse_dentry_revalidate(struct dentry *entry) |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 748 | { |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 749 | if (!entry->d_inode) |
Miklos Szeredi | 97c61e9 | 2001-11-07 12:09:43 +0000 | [diff] [blame] | 750 | return 0; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 751 | else if (entry->d_time && time_after(jiffies, entry->d_time)) { |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 752 | struct inode *inode = entry->d_inode; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 753 | struct fuse_entry_out outarg; |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 754 | int version; |
| 755 | int ret; |
| 756 | |
| 757 | ret = fuse_do_lookup(entry->d_parent->d_inode, entry, &outarg, |
| 758 | &version); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 759 | if (ret) |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 760 | return 0; |
| 761 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 762 | if (outarg.ino != inode->i_ino) |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 763 | return 0; |
| 764 | |
| 765 | change_attributes(inode, &outarg.attr); |
| 766 | inode->i_version = version; |
Miklos Szeredi | 254d5ed | 2004-03-02 11:11:24 +0000 | [diff] [blame] | 767 | entry->d_time = time_to_jiffies(outarg.entry_valid, |
| 768 | outarg.entry_valid_nsec); |
Miklos Szeredi | 5e5d61f | 2002-10-24 11:50:33 +0000 | [diff] [blame] | 769 | } |
| 770 | return 1; |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 771 | } |
| 772 | |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 773 | #ifdef KERNEL_2_6 |
| 774 | |
| 775 | #define fuse_mknod _fuse_mknod |
| 776 | |
| 777 | static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry, |
| 778 | struct kstat *stat) |
| 779 | { |
| 780 | struct inode *inode = entry->d_inode; |
| 781 | int err = fuse_revalidate(entry); |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 782 | if (!err) |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 783 | generic_fillattr(inode, stat); |
| 784 | |
| 785 | return err; |
| 786 | } |
| 787 | |
| 788 | static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry, |
| 789 | struct nameidata *nd) |
| 790 | { |
Miklos Szeredi | e815c03 | 2004-01-19 18:20:49 +0000 | [diff] [blame] | 791 | struct inode *inode; |
| 792 | int err = fuse_lookup_iget(dir, entry, &inode); |
| 793 | if (err) |
| 794 | return ERR_PTR(err); |
| 795 | return d_splice_alias(inode, entry); |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 796 | } |
| 797 | |
| 798 | static int fuse_create(struct inode *dir, struct dentry *entry, int mode, |
| 799 | struct nameidata *nd) |
| 800 | { |
| 801 | return _fuse_create(dir, entry, mode); |
| 802 | } |
| 803 | |
| 804 | static int fuse_permission(struct inode *inode, int mask, |
| 805 | struct nameidata *nd) |
| 806 | { |
| 807 | return _fuse_permission(inode, mask); |
| 808 | } |
| 809 | |
| 810 | static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd) |
| 811 | { |
| 812 | return _fuse_dentry_revalidate(entry); |
| 813 | } |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 814 | |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 815 | #else /* KERNEL_2_6 */ |
| 816 | |
| 817 | #define fuse_create _fuse_create |
| 818 | #define fuse_permission _fuse_permission |
| 819 | |
| 820 | static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry) |
| 821 | { |
| 822 | struct inode *inode; |
| 823 | struct dentry *alias; |
| 824 | |
| 825 | int err = fuse_lookup_iget(dir, entry, &inode); |
| 826 | if (err) |
| 827 | return ERR_PTR(err); |
| 828 | |
| 829 | if (inode && S_ISDIR(inode->i_mode) && |
| 830 | (alias = d_find_alias(inode)) != NULL) { |
| 831 | dput(alias); |
| 832 | iput(inode); |
| 833 | printk("fuse: cannot assign an existing directory\n"); |
| 834 | return ERR_PTR(-EPROTO); |
| 835 | } |
| 836 | |
| 837 | d_add(entry, inode); |
| 838 | return NULL; |
| 839 | } |
| 840 | |
| 841 | static int fuse_mknod(struct inode *dir, struct dentry *entry, int mode, |
| 842 | int rdev) |
| 843 | { |
| 844 | return fuse_mknod(dir, entry, mode, rdev); |
| 845 | } |
| 846 | |
| 847 | static int fuse_dentry_revalidate(struct dentry *entry, int flags) |
| 848 | { |
| 849 | return _fuse_dentry_revalidate(entry); |
| 850 | } |
| 851 | #endif /* KERNEL_2_6 */ |
| 852 | |
| 853 | #ifdef HAVE_KERNEL_XATTR |
| 854 | |
| 855 | #ifdef KERNEL_2_6 |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 856 | static int fuse_setxattr(struct dentry *entry, const char *name, |
| 857 | const void *value, size_t size, int flags) |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 858 | #else |
| 859 | static int fuse_setxattr(struct dentry *entry, const char *name, |
| 860 | void *value, size_t size, int flags) |
| 861 | #endif |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 862 | { |
| 863 | struct inode *inode = entry->d_inode; |
| 864 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 865 | struct fuse_req *req; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 866 | struct fuse_setxattr_in inarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 867 | int err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 868 | |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 869 | if (size > FUSE_XATTR_SIZE_MAX) |
| 870 | return -E2BIG; |
| 871 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 872 | if (fc->no_setxattr) |
| 873 | return -EOPNOTSUPP; |
| 874 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 875 | req = fuse_get_request(fc); |
| 876 | if (!req) |
| 877 | return -ERESTARTSYS; |
| 878 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 879 | memset(&inarg, 0, sizeof(inarg)); |
| 880 | inarg.size = size; |
| 881 | inarg.flags = flags; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 882 | req->in.h.opcode = FUSE_SETXATTR; |
| 883 | req->in.h.ino = inode->i_ino; |
| 884 | req->in.numargs = 3; |
| 885 | req->in.args[0].size = sizeof(inarg); |
| 886 | req->in.args[0].value = &inarg; |
| 887 | req->in.args[1].size = strlen(name) + 1; |
| 888 | req->in.args[1].value = name; |
| 889 | req->in.args[2].size = size; |
| 890 | req->in.args[2].value = value; |
| 891 | request_send(fc, req); |
| 892 | err = req->out.h.error; |
| 893 | if (err == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 894 | fc->no_setxattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 895 | err = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 896 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 897 | fuse_put_request(fc, req); |
| 898 | return err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 899 | } |
| 900 | |
| 901 | static ssize_t fuse_getxattr(struct dentry *entry, const char *name, |
| 902 | void *value, size_t size) |
| 903 | { |
| 904 | struct inode *inode = entry->d_inode; |
| 905 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 906 | struct fuse_req *req; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 907 | struct fuse_getxattr_in inarg; |
| 908 | struct fuse_getxattr_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 909 | ssize_t ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 910 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 911 | if (fc->no_getxattr) |
| 912 | return -EOPNOTSUPP; |
| 913 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 914 | req = fuse_get_request(fc); |
| 915 | if (!req) |
| 916 | return -ERESTARTSYS; |
| 917 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 918 | memset(&inarg, 0, sizeof(inarg)); |
| 919 | inarg.size = size; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 920 | req->in.h.opcode = FUSE_GETXATTR; |
| 921 | req->in.h.ino = inode->i_ino; |
| 922 | req->in.numargs = 2; |
| 923 | req->in.args[0].size = sizeof(inarg); |
| 924 | req->in.args[0].value = &inarg; |
| 925 | req->in.args[1].size = strlen(name) + 1; |
| 926 | req->in.args[1].value = name; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 927 | /* This is really two different operations rolled into one */ |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 928 | req->out.numargs = 1; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 929 | if (size) { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 930 | req->out.argvar = 1; |
| 931 | req->out.args[0].size = size; |
| 932 | req->out.args[0].value = value; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 933 | } else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 934 | req->out.args[0].size = sizeof(outarg); |
| 935 | req->out.args[0].value = &outarg; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 936 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 937 | request_send(fc, req); |
| 938 | ret = req->out.h.error; |
| 939 | if (!ret) |
| 940 | ret = size ? req->out.args[0].size : outarg.size; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 941 | else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 942 | if (ret == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 943 | fc->no_getxattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 944 | ret = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 945 | } |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 946 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 947 | fuse_put_request(fc, req); |
| 948 | return ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 949 | } |
| 950 | |
| 951 | static ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size) |
| 952 | { |
| 953 | struct inode *inode = entry->d_inode; |
| 954 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 955 | struct fuse_req *req; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 956 | struct fuse_getxattr_in inarg; |
| 957 | struct fuse_getxattr_out outarg; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 958 | ssize_t ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 959 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 960 | if (fc->no_listxattr) |
| 961 | return -EOPNOTSUPP; |
| 962 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 963 | req = fuse_get_request(fc); |
| 964 | if (!req) |
| 965 | return -ERESTARTSYS; |
| 966 | |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 967 | memset(&inarg, 0, sizeof(inarg)); |
| 968 | inarg.size = size; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 969 | req->in.h.opcode = FUSE_LISTXATTR; |
| 970 | req->in.h.ino = inode->i_ino; |
| 971 | req->in.numargs = 1; |
| 972 | req->in.args[0].size = sizeof(inarg); |
| 973 | req->in.args[0].value = &inarg; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 974 | /* This is really two different operations rolled into one */ |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 975 | req->out.numargs = 1; |
Miklos Szeredi | c26c14d | 2004-04-09 17:48:32 +0000 | [diff] [blame] | 976 | if (size) { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 977 | req->out.argvar = 1; |
| 978 | req->out.args[0].size = size; |
| 979 | req->out.args[0].value = list; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 980 | } else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 981 | req->out.args[0].size = sizeof(outarg); |
| 982 | req->out.args[0].value = &outarg; |
Miklos Szeredi | 03cebae | 2004-03-31 10:19:18 +0000 | [diff] [blame] | 983 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 984 | request_send(fc, req); |
| 985 | ret = req->out.h.error; |
| 986 | if (!ret) |
| 987 | ret = size ? req->out.args[0].size : outarg.size; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 988 | else { |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 989 | if (ret == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 990 | fc->no_listxattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 991 | ret = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 992 | } |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 993 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 994 | fuse_put_request(fc, req); |
| 995 | return ret; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 996 | } |
| 997 | |
| 998 | static int fuse_removexattr(struct dentry *entry, const char *name) |
| 999 | { |
| 1000 | struct inode *inode = entry->d_inode; |
| 1001 | struct fuse_conn *fc = INO_FC(inode); |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1002 | struct fuse_req *req; |
| 1003 | int err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1004 | |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1005 | if (fc->no_removexattr) |
| 1006 | return -EOPNOTSUPP; |
| 1007 | |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1008 | req = fuse_get_request(fc); |
| 1009 | if (!req) |
| 1010 | return -ERESTARTSYS; |
| 1011 | |
| 1012 | req->in.h.opcode = FUSE_REMOVEXATTR; |
| 1013 | req->in.h.ino = inode->i_ino; |
| 1014 | req->in.numargs = 1; |
| 1015 | req->in.args[0].size = strlen(name) + 1; |
| 1016 | req->in.args[0].value = name; |
| 1017 | request_send(fc, req); |
| 1018 | err = req->out.h.error; |
| 1019 | if (err == -ENOSYS) { |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1020 | fc->no_removexattr = 1; |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1021 | err = -EOPNOTSUPP; |
Miklos Szeredi | 63b8c1c | 2004-06-03 14:45:04 +0000 | [diff] [blame] | 1022 | } |
Miklos Szeredi | 7eafcce | 2004-06-19 22:42:38 +0000 | [diff] [blame] | 1023 | fuse_put_request(fc, req); |
| 1024 | return err; |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1025 | } |
| 1026 | |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1027 | #endif |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1028 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1029 | static struct inode_operations fuse_dir_inode_operations = |
| 1030 | { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1031 | .lookup = fuse_lookup, |
| 1032 | .create = fuse_create, |
| 1033 | .mknod = fuse_mknod, |
| 1034 | .mkdir = fuse_mkdir, |
| 1035 | .symlink = fuse_symlink, |
| 1036 | .unlink = fuse_unlink, |
| 1037 | .rmdir = fuse_rmdir, |
| 1038 | .rename = fuse_rename, |
| 1039 | .link = fuse_link, |
| 1040 | .setattr = fuse_setattr, |
| 1041 | .permission = fuse_permission, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1042 | #ifdef KERNEL_2_6 |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1043 | .getattr = fuse_getattr, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1044 | #else |
| 1045 | .revalidate = fuse_revalidate, |
| 1046 | #endif |
| 1047 | #ifdef HAVE_KERNEL_XATTR |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1048 | .setxattr = fuse_setxattr, |
| 1049 | .getxattr = fuse_getxattr, |
| 1050 | .listxattr = fuse_listxattr, |
| 1051 | .removexattr = fuse_removexattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1052 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1053 | }; |
| 1054 | |
| 1055 | static struct file_operations fuse_dir_operations = { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1056 | .read = generic_read_dir, |
| 1057 | .readdir = fuse_readdir, |
| 1058 | .open = fuse_dir_open, |
| 1059 | .release = fuse_dir_release, |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1060 | }; |
| 1061 | |
| 1062 | static struct inode_operations fuse_file_inode_operations = { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1063 | .setattr = fuse_setattr, |
| 1064 | .permission = fuse_permission, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1065 | #ifdef KERNEL_2_6 |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1066 | .getattr = fuse_getattr, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1067 | #else |
| 1068 | .revalidate = fuse_revalidate, |
| 1069 | #endif |
| 1070 | #ifdef HAVE_KERNEL_XATTR |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1071 | .setxattr = fuse_setxattr, |
| 1072 | .getxattr = fuse_getxattr, |
| 1073 | .listxattr = fuse_listxattr, |
| 1074 | .removexattr = fuse_removexattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1075 | #endif |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1076 | }; |
| 1077 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1078 | static struct inode_operations fuse_symlink_inode_operations = |
| 1079 | { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1080 | .setattr = fuse_setattr, |
| 1081 | .readlink = fuse_readlink, |
| 1082 | .follow_link = fuse_follow_link, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1083 | #ifdef KERNEL_2_6 |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1084 | .getattr = fuse_getattr, |
Miklos Szeredi | 689f563 | 2004-05-04 08:49:16 +0000 | [diff] [blame] | 1085 | #else |
| 1086 | .revalidate = fuse_revalidate, |
| 1087 | #endif |
| 1088 | #ifdef HAVE_KERNEL_XATTR |
Miklos Szeredi | 3ed8423 | 2004-03-30 15:17:26 +0000 | [diff] [blame] | 1089 | .setxattr = fuse_setxattr, |
| 1090 | .getxattr = fuse_getxattr, |
| 1091 | .listxattr = fuse_listxattr, |
| 1092 | .removexattr = fuse_removexattr, |
Miklos Szeredi | f85ab24 | 2004-01-07 12:16:45 +0000 | [diff] [blame] | 1093 | #endif |
Miklos Szeredi | 19dff1b | 2001-10-30 15:06:52 +0000 | [diff] [blame] | 1094 | }; |
| 1095 | |
Miklos Szeredi | 307242f | 2004-01-26 11:28:44 +0000 | [diff] [blame] | 1096 | static struct dentry_operations fuse_dentry_operations = { |
Miklos Szeredi | e8663f3 | 2004-01-13 15:33:12 +0000 | [diff] [blame] | 1097 | .d_revalidate = fuse_dentry_revalidate, |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1098 | }; |
| 1099 | |
Miklos Szeredi | 85c74fc | 2001-10-28 19:44:14 +0000 | [diff] [blame] | 1100 | /* |
| 1101 | * Local Variables: |
| 1102 | * indent-tabs-mode: t |
| 1103 | * c-basic-offset: 8 |
| 1104 | * End: |
| 1105 | */ |