1 5551e51d 2006-07-23 devnull #include "a.h"
  2 5551e51d 2006-07-23 devnull 
  3 5551e51d 2006-07-23 devnull int fusefd;
  4 5551e51d 2006-07-23 devnull int fuseeof;
  5 5551e51d 2006-07-23 devnull int fusebufsize;
  6 5551e51d 2006-07-23 devnull int fusemaxwrite;
  7 5551e51d 2006-07-23 devnull FuseMsg *fusemsglist;
  8 be8b4b39 2006-08-01 devnull Lock fusemsglock;
  9 5551e51d 2006-07-23 devnull 
 10 143cdf57 2006-07-26 devnull int mountfuse(char *mtpt);
 11 143cdf57 2006-07-26 devnull void unmountfuse(char *mtpt);
 12 143cdf57 2006-07-26 devnull 
 13 5551e51d 2006-07-23 devnull FuseMsg*
 14 5551e51d 2006-07-23 devnull allocfusemsg(void)
 15 5551e51d 2006-07-23 devnull {
 16 5551e51d 2006-07-23 devnull 	FuseMsg *m;
 17 5551e51d 2006-07-23 devnull 	void *vbuf;
 18 5551e51d 2006-07-23 devnull 	
 19 be8b4b39 2006-08-01 devnull 	lock(&fusemsglock);
 20 5551e51d 2006-07-23 devnull 	if((m = fusemsglist) != nil){
 21 5551e51d 2006-07-23 devnull 		fusemsglist = m->next;
 22 be8b4b39 2006-08-01 devnull 		unlock(&fusemsglock);
 23 5551e51d 2006-07-23 devnull 		return m;
 24 5551e51d 2006-07-23 devnull 	}
 25 be8b4b39 2006-08-01 devnull 	unlock(&fusemsglock);
 26 5551e51d 2006-07-23 devnull 	m = emalloc(sizeof(*m) + fusebufsize);
 27 5551e51d 2006-07-23 devnull 	vbuf = m+1;
 28 5551e51d 2006-07-23 devnull 	m->buf = vbuf;
 29 5551e51d 2006-07-23 devnull 	m->nbuf = 0;
 30 5551e51d 2006-07-23 devnull 	m->hdr = vbuf;
 31 5551e51d 2006-07-23 devnull 	m->tx = m->hdr+1;
 32 5551e51d 2006-07-23 devnull 	return m;
 33 5551e51d 2006-07-23 devnull }
 34 5551e51d 2006-07-23 devnull 
 35 5551e51d 2006-07-23 devnull void
 36 5551e51d 2006-07-23 devnull freefusemsg(FuseMsg *m)
 37 5551e51d 2006-07-23 devnull {
 38 be8b4b39 2006-08-01 devnull 	lock(&fusemsglock);
 39 5551e51d 2006-07-23 devnull 	m->next = fusemsglist;
 40 5551e51d 2006-07-23 devnull 	fusemsglist = m;
 41 be8b4b39 2006-08-01 devnull 	unlock(&fusemsglock);
 42 5551e51d 2006-07-23 devnull }
 43 5551e51d 2006-07-23 devnull 
 44 5551e51d 2006-07-23 devnull FuseMsg*
 45 5551e51d 2006-07-23 devnull readfusemsg(void)
 46 5551e51d 2006-07-23 devnull {
 47 5551e51d 2006-07-23 devnull 	FuseMsg *m;
 48 5551e51d 2006-07-23 devnull 	int n;
 49 5551e51d 2006-07-23 devnull 	
 50 5551e51d 2006-07-23 devnull 	m = allocfusemsg();
 51 5551e51d 2006-07-23 devnull 	errno = 0;
 52 5551e51d 2006-07-23 devnull 	/*
 53 5551e51d 2006-07-23 devnull 	 * The FUSE kernel device apparently guarantees
 54 5551e51d 2006-07-23 devnull 	 * that this read will return exactly one message.
 55 5551e51d 2006-07-23 devnull 	 * You get an error return if you ask for just the
 56 5551e51d 2006-07-23 devnull 	 * length (first 4 bytes).
 57 5551e51d 2006-07-23 devnull 	 * FUSE returns an ENODEV error, not EOF,
 58 5551e51d 2006-07-23 devnull 	 * when the connection is unmounted.
 59 5551e51d 2006-07-23 devnull 	 */
 60 5551e51d 2006-07-23 devnull 	if((n = read(fusefd, m->buf, fusebufsize)) < 0){
 61 5551e51d 2006-07-23 devnull 		if(errno != ENODEV)
 62 5551e51d 2006-07-23 devnull 			sysfatal("readfusemsg: %r");
 63 5551e51d 2006-07-23 devnull 	}
 64 5551e51d 2006-07-23 devnull 	if(n <= 0){
 65 5551e51d 2006-07-23 devnull 		fuseeof = 1;
 66 5551e51d 2006-07-23 devnull 		freefusemsg(m);
 67 5551e51d 2006-07-23 devnull 		return nil;
 68 5551e51d 2006-07-23 devnull 	}
 69 5551e51d 2006-07-23 devnull 	m->nbuf = n;
 70 143cdf57 2006-07-26 devnull 
 71 143cdf57 2006-07-26 devnull 	/*
 72 143cdf57 2006-07-26 devnull 	 * FreeBSD FUSE sends a short length in the header
 73 143cdf57 2006-07-26 devnull 	 * for FUSE_INIT even though the actual read length
 74 143cdf57 2006-07-26 devnull 	 * is correct.
 75 143cdf57 2006-07-26 devnull 	 */
 76 143cdf57 2006-07-26 devnull 	if(n == sizeof(*m->hdr)+sizeof(struct fuse_init_in)
 77 143cdf57 2006-07-26 devnull 	&& m->hdr->opcode == FUSE_INIT && m->hdr->len < n)
 78 143cdf57 2006-07-26 devnull 		m->hdr->len = n;
 79 143cdf57 2006-07-26 devnull 
 80 5551e51d 2006-07-23 devnull 	if(m->hdr->len != n)
 81 5551e51d 2006-07-23 devnull 		sysfatal("readfusemsg: got %d wanted %d",
 82 5551e51d 2006-07-23 devnull 			n, m->hdr->len);
 83 143cdf57 2006-07-26 devnull 	m->hdr->len -= sizeof(*m->hdr);
 84 5551e51d 2006-07-23 devnull 	
 85 5551e51d 2006-07-23 devnull 	/*
 86 5551e51d 2006-07-23 devnull 	 * Paranoia.
 87 5551e51d 2006-07-23 devnull 	 * Make sure lengths are long enough.
 88 5551e51d 2006-07-23 devnull 	 * Make sure string arguments are NUL terminated.
 89 5551e51d 2006-07-23 devnull 	 * (I don't trust the kernel module.)
 90 5551e51d 2006-07-23 devnull 	 */
 91 5551e51d 2006-07-23 devnull 	switch(m->hdr->opcode){
 92 5551e51d 2006-07-23 devnull 	default:
 93 5551e51d 2006-07-23 devnull 		/*
 94 5551e51d 2006-07-23 devnull 		 * Could sysfatal here, but can also let message go
 95 5551e51d 2006-07-23 devnull 		 * and assume higher-level code will return an
 96 5551e51d 2006-07-23 devnull 		 * "I don't know what you mean" error and recover.
 97 5551e51d 2006-07-23 devnull 		 */
 98 5551e51d 2006-07-23 devnull 		break;
 99 5551e51d 2006-07-23 devnull 	case FUSE_LOOKUP:
100 5551e51d 2006-07-23 devnull 	case FUSE_UNLINK:
101 5551e51d 2006-07-23 devnull 	case FUSE_RMDIR:
102 5551e51d 2006-07-23 devnull 	case FUSE_REMOVEXATTR:
103 5551e51d 2006-07-23 devnull 		/* just a string */
104 5551e51d 2006-07-23 devnull 		if(((char*)m->tx)[m->hdr->len-1] != 0)
105 5551e51d 2006-07-23 devnull 		bad:
106 5551e51d 2006-07-23 devnull 			sysfatal("readfusemsg: bad message");
107 5551e51d 2006-07-23 devnull 		break;
108 5551e51d 2006-07-23 devnull 	case FUSE_FORGET:
109 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_forget_in))
110 5551e51d 2006-07-23 devnull 			goto bad;
111 5551e51d 2006-07-23 devnull 		break;
112 5551e51d 2006-07-23 devnull 	case FUSE_GETATTR:
113 5551e51d 2006-07-23 devnull 		break;
114 5551e51d 2006-07-23 devnull 	case FUSE_SETATTR:
115 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_setattr_in))
116 5551e51d 2006-07-23 devnull 			goto bad;
117 5551e51d 2006-07-23 devnull 		break;
118 5551e51d 2006-07-23 devnull 	case FUSE_READLINK:
119 5551e51d 2006-07-23 devnull 		break;
120 5551e51d 2006-07-23 devnull 	case FUSE_SYMLINK:
121 5551e51d 2006-07-23 devnull 		/* two strings */
122 5551e51d 2006-07-23 devnull 		if(((char*)m->tx)[m->hdr->len-1] != 0
123 5551e51d 2006-07-23 devnull 		|| memchr(m->tx, 0, m->hdr->len-1) == 0)
124 5551e51d 2006-07-23 devnull 			goto bad;
125 5551e51d 2006-07-23 devnull 		break;	
126 5551e51d 2006-07-23 devnull 	case FUSE_MKNOD:
127 5551e51d 2006-07-23 devnull 		if(m->hdr->len <= sizeof(struct fuse_mknod_in)
128 5551e51d 2006-07-23 devnull 		|| ((char*)m->tx)[m->hdr->len-1] != 0)
129 5551e51d 2006-07-23 devnull 			goto bad;
130 5551e51d 2006-07-23 devnull 		break;
131 5551e51d 2006-07-23 devnull 	case FUSE_MKDIR:
132 5551e51d 2006-07-23 devnull 		if(m->hdr->len <= sizeof(struct fuse_mkdir_in)
133 5551e51d 2006-07-23 devnull 		|| ((char*)m->tx)[m->hdr->len-1] != 0)
134 5551e51d 2006-07-23 devnull 			goto bad;
135 5551e51d 2006-07-23 devnull 		break;
136 5551e51d 2006-07-23 devnull 	case FUSE_RENAME:
137 5551e51d 2006-07-23 devnull 		/* a struct and two strings */
138 5551e51d 2006-07-23 devnull 		if(m->hdr->len <= sizeof(struct fuse_rename_in)
139 5551e51d 2006-07-23 devnull 		|| ((char*)m->tx)[m->hdr->len-1] != 0
140 5551e51d 2006-07-23 devnull 		|| memchr((uchar*)m->tx+sizeof(struct fuse_rename_in), 0, m->hdr->len-sizeof(struct fuse_rename_in)-1) == 0)
141 5551e51d 2006-07-23 devnull 			goto bad;
142 5551e51d 2006-07-23 devnull 		break;
143 5551e51d 2006-07-23 devnull 	case FUSE_LINK:
144 5551e51d 2006-07-23 devnull 		if(m->hdr->len <= sizeof(struct fuse_link_in)
145 5551e51d 2006-07-23 devnull 		|| ((char*)m->tx)[m->hdr->len-1] != 0)
146 5551e51d 2006-07-23 devnull 			goto bad;
147 5551e51d 2006-07-23 devnull 		break;
148 5551e51d 2006-07-23 devnull 	case FUSE_OPEN:
149 5551e51d 2006-07-23 devnull 	case FUSE_OPENDIR:
150 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_open_in))
151 5551e51d 2006-07-23 devnull 			goto bad;
152 5551e51d 2006-07-23 devnull 		break;
153 5551e51d 2006-07-23 devnull 	case FUSE_READ:
154 5551e51d 2006-07-23 devnull 	case FUSE_READDIR:
155 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_read_in))
156 5551e51d 2006-07-23 devnull 			goto bad;
157 5551e51d 2006-07-23 devnull 		break;
158 5551e51d 2006-07-23 devnull 	case FUSE_WRITE:
159 5551e51d 2006-07-23 devnull 		/* no strings, but check that write length is sane */
160 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_write_in)+((struct fuse_write_in*)m->tx)->size)
161 5551e51d 2006-07-23 devnull 			goto bad;
162 5551e51d 2006-07-23 devnull 		break;
163 5551e51d 2006-07-23 devnull 	case FUSE_STATFS:
164 5551e51d 2006-07-23 devnull 		break;
165 5551e51d 2006-07-23 devnull 	case FUSE_RELEASE:
166 5551e51d 2006-07-23 devnull 	case FUSE_RELEASEDIR:
167 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_release_in))
168 5551e51d 2006-07-23 devnull 			goto bad;
169 5551e51d 2006-07-23 devnull 		break;
170 5551e51d 2006-07-23 devnull 	case FUSE_FSYNC:
171 5551e51d 2006-07-23 devnull 	case FUSE_FSYNCDIR:
172 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_fsync_in))
173 5551e51d 2006-07-23 devnull 			goto bad;
174 5551e51d 2006-07-23 devnull 		break;
175 5551e51d 2006-07-23 devnull 	case FUSE_SETXATTR:
176 5551e51d 2006-07-23 devnull 		/* struct and two strings */
177 5551e51d 2006-07-23 devnull 		if(m->hdr->len <= sizeof(struct fuse_setxattr_in)
178 5551e51d 2006-07-23 devnull 		|| ((char*)m->tx)[m->hdr->len-1] != 0
179 5551e51d 2006-07-23 devnull 		|| memchr((uchar*)m->tx+sizeof(struct fuse_setxattr_in), 0, m->hdr->len-sizeof(struct fuse_setxattr_in)-1) == 0)
180 5551e51d 2006-07-23 devnull 			goto bad;
181 5551e51d 2006-07-23 devnull 		break;
182 5551e51d 2006-07-23 devnull 	case FUSE_GETXATTR:
183 5551e51d 2006-07-23 devnull 		/* struct and one string */
184 5551e51d 2006-07-23 devnull 		if(m->hdr->len <= sizeof(struct fuse_getxattr_in)
185 5551e51d 2006-07-23 devnull 		|| ((char*)m->tx)[m->hdr->len-1] != 0)
186 5551e51d 2006-07-23 devnull 			goto bad;
187 5551e51d 2006-07-23 devnull 		break;
188 5551e51d 2006-07-23 devnull 	case FUSE_LISTXATTR:
189 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_getxattr_in))
190 5551e51d 2006-07-23 devnull 			goto bad;
191 5551e51d 2006-07-23 devnull 		break;
192 5551e51d 2006-07-23 devnull 	case FUSE_FLUSH:
193 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_flush_in))
194 5551e51d 2006-07-23 devnull 			goto bad;
195 5551e51d 2006-07-23 devnull 		break;
196 5551e51d 2006-07-23 devnull 	case FUSE_INIT:
197 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_init_in))
198 5551e51d 2006-07-23 devnull 			goto bad;
199 5551e51d 2006-07-23 devnull 		break;
200 5551e51d 2006-07-23 devnull 	case FUSE_ACCESS:
201 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_access_in))
202 5551e51d 2006-07-23 devnull 			goto bad;
203 5551e51d 2006-07-23 devnull 		break;
204 5551e51d 2006-07-23 devnull 	case FUSE_CREATE:
205 5551e51d 2006-07-23 devnull 		if(m->hdr->len <= sizeof(struct fuse_open_in)
206 5551e51d 2006-07-23 devnull 		|| ((char*)m->tx)[m->hdr->len-1] != 0)
207 5551e51d 2006-07-23 devnull 			goto bad;
208 5551e51d 2006-07-23 devnull 		break;
209 5551e51d 2006-07-23 devnull 	}
210 5551e51d 2006-07-23 devnull 	if(debug)
211 5551e51d 2006-07-23 devnull 		fprint(2, "FUSE -> %G\n", m->hdr, m->tx);
212 5551e51d 2006-07-23 devnull 	return m;
213 5551e51d 2006-07-23 devnull }
214 5551e51d 2006-07-23 devnull 
215 5551e51d 2006-07-23 devnull /*
216 5551e51d 2006-07-23 devnull  * Reply to FUSE request m using additonal 
217 5551e51d 2006-07-23 devnull  * argument buffer arg of size narg bytes.
218 5551e51d 2006-07-23 devnull  * Perhaps should free the FuseMsg here?
219 5551e51d 2006-07-23 devnull  */
220 5551e51d 2006-07-23 devnull void
221 5551e51d 2006-07-23 devnull replyfuse(FuseMsg *m, void *arg, int narg)
222 5551e51d 2006-07-23 devnull {
223 5551e51d 2006-07-23 devnull 	struct iovec vec[2];
224 5551e51d 2006-07-23 devnull 	struct fuse_out_header hdr;
225 5551e51d 2006-07-23 devnull 	int nvec;
226 5551e51d 2006-07-23 devnull 	
227 5551e51d 2006-07-23 devnull 	hdr.len = sizeof hdr + narg;
228 5551e51d 2006-07-23 devnull 	hdr.error = 0;
229 5551e51d 2006-07-23 devnull 	hdr.unique = m->hdr->unique;
230 5551e51d 2006-07-23 devnull 	if(debug)
231 5551e51d 2006-07-23 devnull 		fprint(2, "FUSE <- %#G\n", m->hdr, &hdr, arg);
232 5551e51d 2006-07-23 devnull 
233 5551e51d 2006-07-23 devnull 	vec[0].iov_base = &hdr;
234 5551e51d 2006-07-23 devnull 	vec[0].iov_len = sizeof hdr;
235 5551e51d 2006-07-23 devnull 	nvec = 1;
236 5551e51d 2006-07-23 devnull 	if(arg && narg){
237 5551e51d 2006-07-23 devnull 		vec[1].iov_base = arg;
238 5551e51d 2006-07-23 devnull 		vec[1].iov_len = narg;
239 5551e51d 2006-07-23 devnull 		nvec++;
240 5551e51d 2006-07-23 devnull 	}
241 5551e51d 2006-07-23 devnull 	if(writev(fusefd, vec, nvec) < 0)
242 5551e51d 2006-07-23 devnull 		sysfatal("replyfuse: %r");
243 be8b4b39 2006-08-01 devnull 	freefusemsg(m);
244 5551e51d 2006-07-23 devnull }
245 5551e51d 2006-07-23 devnull 
246 5551e51d 2006-07-23 devnull /*
247 5551e51d 2006-07-23 devnull  * Reply to FUSE request m with errno e.
248 5551e51d 2006-07-23 devnull  */
249 5551e51d 2006-07-23 devnull void
250 5551e51d 2006-07-23 devnull replyfuseerrno(FuseMsg *m, int e)
251 5551e51d 2006-07-23 devnull {
252 5551e51d 2006-07-23 devnull 	struct fuse_out_header hdr;
253 5551e51d 2006-07-23 devnull 	
254 5551e51d 2006-07-23 devnull 	hdr.len = sizeof hdr;
255 5551e51d 2006-07-23 devnull 	hdr.error = -e;	/* FUSE sends negative errnos. */
256 5551e51d 2006-07-23 devnull 	hdr.unique = m->hdr->unique;
257 5551e51d 2006-07-23 devnull 	if(debug)
258 5551e51d 2006-07-23 devnull 		fprint(2, "FUSE <- %#G\n", m->hdr, &hdr, 0);
259 5551e51d 2006-07-23 devnull 	if(write(fusefd, &hdr, sizeof hdr) < 0)
260 5551e51d 2006-07-23 devnull 		sysfatal("replyfuseerror: %r");
261 be8b4b39 2006-08-01 devnull 	freefusemsg(m);
262 5551e51d 2006-07-23 devnull }
263 5551e51d 2006-07-23 devnull 
264 5551e51d 2006-07-23 devnull void
265 5551e51d 2006-07-23 devnull replyfuseerrstr(FuseMsg *m)
266 5551e51d 2006-07-23 devnull {
267 5551e51d 2006-07-23 devnull 	replyfuseerrno(m, errstr2errno());
268 5551e51d 2006-07-23 devnull }
269 5551e51d 2006-07-23 devnull 
270 5551e51d 2006-07-23 devnull char *fusemtpt;
271 5551e51d 2006-07-23 devnull void
272 5551e51d 2006-07-23 devnull unmountatexit(void)
273 5551e51d 2006-07-23 devnull {
274 5551e51d 2006-07-23 devnull 	if(fusemtpt)
275 5551e51d 2006-07-23 devnull 		unmountfuse(fusemtpt);
276 5551e51d 2006-07-23 devnull }
277 5551e51d 2006-07-23 devnull 
278 5551e51d 2006-07-23 devnull void
279 5551e51d 2006-07-23 devnull initfuse(char *mtpt)
280 5551e51d 2006-07-23 devnull {
281 5551e51d 2006-07-23 devnull 	FuseMsg *m;
282 5551e51d 2006-07-23 devnull 	struct fuse_init_in *tx;
283 5551e51d 2006-07-23 devnull 	struct fuse_init_out rx;
284 5551e51d 2006-07-23 devnull 
285 5551e51d 2006-07-23 devnull 	fusemtpt = mtpt;
286 5551e51d 2006-07-23 devnull 
287 5551e51d 2006-07-23 devnull 	/*
288 5551e51d 2006-07-23 devnull 	 * The 4096 is for the message headers.
289 5551e51d 2006-07-23 devnull 	 * It's a lot, but it's what the FUSE libraries ask for.
290 5551e51d 2006-07-23 devnull 	 */
291 5551e51d 2006-07-23 devnull 	fusemaxwrite = getpagesize();
292 5551e51d 2006-07-23 devnull 	fusebufsize = 4096 + fusemaxwrite;
293 5551e51d 2006-07-23 devnull 
294 5551e51d 2006-07-23 devnull 	if((fusefd = mountfuse(mtpt)) < 0)
295 5551e51d 2006-07-23 devnull 		sysfatal("mountfuse: %r");
296 5551e51d 2006-07-23 devnull 
297 5551e51d 2006-07-23 devnull 	if((m = readfusemsg()) == nil)
298 5551e51d 2006-07-23 devnull 		sysfatal("readfusemsg: %r");
299 5551e51d 2006-07-23 devnull 	if(m->hdr->opcode != FUSE_INIT)
300 5551e51d 2006-07-23 devnull 		sysfatal("fuse: expected FUSE_INIT (26) got %d", m->hdr->opcode);
301 5551e51d 2006-07-23 devnull 	tx = m->tx;
302 5551e51d 2006-07-23 devnull 
303 5551e51d 2006-07-23 devnull 	/*
304 5551e51d 2006-07-23 devnull 	 * Complain if the kernel is too new.
305 5551e51d 2006-07-23 devnull 	 * We could forge ahead, but at least the one time I tried,
306 5551e51d 2006-07-23 devnull 	 * the kernel rejected the newer version by making the 
307 5551e51d 2006-07-23 devnull 	 * writev fail in replyfuse, which is a much more confusing
308 5551e51d 2006-07-23 devnull 	 * error message.  In the future, might be nice to try to 
309 5551e51d 2006-07-23 devnull 	 * support older versions that differ only slightly.
310 5551e51d 2006-07-23 devnull 	 */
311 5551e51d 2006-07-23 devnull 	if(tx->major < FUSE_KERNEL_VERSION 
312 5551e51d 2006-07-23 devnull 	|| (tx->major == FUSE_KERNEL_VERSION && tx->minor < FUSE_KERNEL_MINOR_VERSION))
313 5551e51d 2006-07-23 devnull 		sysfatal("fuse: too kernel version %d.%d older than program version %d.%d",
314 5551e51d 2006-07-23 devnull 			tx->major, tx->minor, FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
315 5551e51d 2006-07-23 devnull 
316 5551e51d 2006-07-23 devnull 	memset(&rx, 0, sizeof rx);
317 5551e51d 2006-07-23 devnull 	rx.major = FUSE_KERNEL_VERSION;
318 5551e51d 2006-07-23 devnull 	rx.minor = FUSE_KERNEL_MINOR_VERSION;
319 5551e51d 2006-07-23 devnull 	rx.max_write = fusemaxwrite;
320 5551e51d 2006-07-23 devnull 	replyfuse(m, &rx, sizeof rx);
321 5551e51d 2006-07-23 devnull }
322 5551e51d 2006-07-23 devnull 
323 5551e51d 2006-07-23 devnull /*
324 5551e51d 2006-07-23 devnull  * Print FUSE messages.  Assuming it is installed as %G,
325 5551e51d 2006-07-23 devnull  * use %G with hdr, arg arguments to format a request,
326 5551e51d 2006-07-23 devnull  * and %#G with reqhdr, hdr, arg arguments to format a response.
327 5551e51d 2006-07-23 devnull  * The reqhdr is necessary in the %#G form because the
328 5551e51d 2006-07-23 devnull  * response does not contain an opcode tag.
329 5551e51d 2006-07-23 devnull  */
330 5551e51d 2006-07-23 devnull int
331 5551e51d 2006-07-23 devnull fusefmt(Fmt *fmt)
332 5551e51d 2006-07-23 devnull {
333 5551e51d 2006-07-23 devnull 	struct fuse_in_header *hdr = va_arg(fmt->args, void*);
334 5551e51d 2006-07-23 devnull 	if((fmt->flags&FmtSharp) == 0){  /* "%G", hdr, arg */
335 5551e51d 2006-07-23 devnull 		void *a = va_arg(fmt->args, void*);
336 5551e51d 2006-07-23 devnull 		fmtprint(fmt, "len %d unique %#llux uid %d gid %d pid %d ",
337 5551e51d 2006-07-23 devnull 			hdr->len, hdr->unique, hdr->uid, hdr->gid, hdr->pid);
338 5551e51d 2006-07-23 devnull 
339 5551e51d 2006-07-23 devnull 		switch(hdr->opcode){
340 5551e51d 2006-07-23 devnull 			default: {
341 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "??? opcode %d", hdr->opcode);
342 5551e51d 2006-07-23 devnull 				break;
343 5551e51d 2006-07-23 devnull 			}
344 5551e51d 2006-07-23 devnull 			case FUSE_LOOKUP: {
345 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Lookup nodeid %#llux name %#q",
346 5551e51d 2006-07-23 devnull 					hdr->nodeid, a);
347 5551e51d 2006-07-23 devnull 				break;
348 5551e51d 2006-07-23 devnull 			}
349 5551e51d 2006-07-23 devnull 			case FUSE_FORGET: {
350 5551e51d 2006-07-23 devnull 				struct fuse_forget_in *tx = a;
351 5551e51d 2006-07-23 devnull 				/* nlookup (a ref count) is a vlong! */
352 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Forget nodeid %#llux nlookup %lld",
353 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->nlookup);
354 5551e51d 2006-07-23 devnull 				break;
355 5551e51d 2006-07-23 devnull 			}
356 5551e51d 2006-07-23 devnull 			case FUSE_GETATTR: {
357 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Getattr nodeid %#llux", hdr->nodeid);
358 5551e51d 2006-07-23 devnull 				break;
359 5551e51d 2006-07-23 devnull 			}
360 5551e51d 2006-07-23 devnull 			case FUSE_SETATTR: {
361 5551e51d 2006-07-23 devnull 				struct fuse_setattr_in *tx = a;
362 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Setattr nodeid %#llux", hdr->nodeid);
363 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_FH)
364 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " fh %#llux", tx->fh);
365 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_SIZE)
366 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " size %lld", tx->size);
367 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_ATIME)
368 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " atime %.20g", tx->atime+tx->atimensec*1e-9);
369 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_MTIME)
370 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " mtime %.20g", tx->mtime+tx->mtimensec*1e-9);
371 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_MODE)
372 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " mode %#uo", tx->mode);
373 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_UID)
374 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " uid %d", tx->uid);
375 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_GID)
376 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " gid %d", tx->gid);
377 5551e51d 2006-07-23 devnull 				break;
378 5551e51d 2006-07-23 devnull 			}
379 5551e51d 2006-07-23 devnull 			case FUSE_READLINK: {
380 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Readlink nodeid %#llux", hdr->nodeid);
381 5551e51d 2006-07-23 devnull 				break;
382 5551e51d 2006-07-23 devnull 			}
383 5551e51d 2006-07-23 devnull 			case FUSE_SYMLINK: {
384 5551e51d 2006-07-23 devnull 				char *old, *new;
385 5551e51d 2006-07-23 devnull 				
386 5551e51d 2006-07-23 devnull 				old = a;
387 5551e51d 2006-07-23 devnull 				new = a + strlen(a) + 1;
388 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Symlink nodeid %#llux old %#q new %#q",
389 5551e51d 2006-07-23 devnull 					hdr->nodeid, old, new);
390 5551e51d 2006-07-23 devnull 				break;
391 5551e51d 2006-07-23 devnull 			}
392 5551e51d 2006-07-23 devnull 			case FUSE_MKNOD: {
393 5551e51d 2006-07-23 devnull 				struct fuse_mknod_in *tx = a;
394 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Mknod nodeid %#llux mode %#uo rdev %#ux name %#q",
395 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->mode, tx->rdev, tx+1);
396 5551e51d 2006-07-23 devnull 				break;
397 5551e51d 2006-07-23 devnull 			}
398 5551e51d 2006-07-23 devnull 			case FUSE_MKDIR: {
399 5551e51d 2006-07-23 devnull 				struct fuse_mkdir_in *tx = a;
400 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Mkdir nodeid %#llux mode %#uo name %#q",
401 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->mode, tx+1);
402 5551e51d 2006-07-23 devnull 				break;
403 5551e51d 2006-07-23 devnull 			}
404 5551e51d 2006-07-23 devnull 			case FUSE_UNLINK: {
405 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Unlink nodeid %#llux name %#q",
406 5551e51d 2006-07-23 devnull 					hdr->nodeid, a);
407 5551e51d 2006-07-23 devnull 				break;
408 5551e51d 2006-07-23 devnull 			}
409 5551e51d 2006-07-23 devnull 			case FUSE_RMDIR: {
410 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Rmdir nodeid %#llux name %#q",
411 5551e51d 2006-07-23 devnull 					hdr->nodeid, a);
412 5551e51d 2006-07-23 devnull 				break;
413 5551e51d 2006-07-23 devnull 			}
414 5551e51d 2006-07-23 devnull 			case FUSE_RENAME: {
415 5551e51d 2006-07-23 devnull 				struct fuse_rename_in *tx = a;
416 5551e51d 2006-07-23 devnull 				char *old = (char*)(tx+1);
417 5551e51d 2006-07-23 devnull 				char *new = old + strlen(old) + 1;
418 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Rename nodeid %#llux old %#q newdir %#llux new %#q",
419 5551e51d 2006-07-23 devnull 					hdr->nodeid, old, tx->newdir, new);
420 5551e51d 2006-07-23 devnull 				break;
421 5551e51d 2006-07-23 devnull 			}
422 5551e51d 2006-07-23 devnull 			case FUSE_LINK: {
423 5551e51d 2006-07-23 devnull 				struct fuse_link_in *tx = a;
424 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Link oldnodeid %#llux nodeid %#llux name %#q",
425 5551e51d 2006-07-23 devnull 					tx->oldnodeid, hdr->nodeid, tx+1);
426 5551e51d 2006-07-23 devnull 				break;
427 5551e51d 2006-07-23 devnull 			}
428 5551e51d 2006-07-23 devnull 			case FUSE_OPEN: {
429 5551e51d 2006-07-23 devnull 				struct fuse_open_in *tx = a;
430 5551e51d 2006-07-23 devnull 				/* Should one or both of flags and mode be octal? */
431 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Open nodeid %#llux flags %#ux mode %#ux",
432 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->flags, tx->mode);
433 5551e51d 2006-07-23 devnull 				break;
434 5551e51d 2006-07-23 devnull 			}
435 5551e51d 2006-07-23 devnull 			case FUSE_READ: {
436 5551e51d 2006-07-23 devnull 				struct fuse_read_in *tx = a;
437 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Read nodeid %#llux fh %#llux offset %lld size %ud",
438 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->offset, tx->size);
439 5551e51d 2006-07-23 devnull 				break;
440 5551e51d 2006-07-23 devnull 			}
441 5551e51d 2006-07-23 devnull 			case FUSE_WRITE: {
442 5551e51d 2006-07-23 devnull 				struct fuse_write_in *tx = a;
443 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Write nodeid %#llux fh %#llux offset %lld size %ud flags %#ux",
444 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->offset, tx->size, tx->write_flags);
445 5551e51d 2006-07-23 devnull 				break;
446 5551e51d 2006-07-23 devnull 			}
447 5551e51d 2006-07-23 devnull 			case FUSE_STATFS: {
448 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Statfs");
449 5551e51d 2006-07-23 devnull 				break;
450 5551e51d 2006-07-23 devnull 			}
451 5551e51d 2006-07-23 devnull 			case FUSE_RELEASE: {
452 5551e51d 2006-07-23 devnull 				struct fuse_release_in *tx = a;
453 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Release nodeid %#llux fh %#llux flags %#ux",
454 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->flags); 
455 5551e51d 2006-07-23 devnull 				break;
456 5551e51d 2006-07-23 devnull 			}
457 5551e51d 2006-07-23 devnull 			case FUSE_FSYNC: {
458 5551e51d 2006-07-23 devnull 				struct fuse_fsync_in *tx = a;
459 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Fsync nodeid %#llux fh %#llux flags %#ux",
460 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->fsync_flags);
461 5551e51d 2006-07-23 devnull 				break;
462 5551e51d 2006-07-23 devnull 			}
463 5551e51d 2006-07-23 devnull 			case FUSE_SETXATTR: {
464 5551e51d 2006-07-23 devnull 				struct fuse_setxattr_in *tx = a;
465 5551e51d 2006-07-23 devnull 				char *name = (char*)(tx+1);
466 5551e51d 2006-07-23 devnull 				char *value = name + strlen(name) + 1;
467 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Setxattr nodeid %#llux size %d flags %#ux name %#q value %#q",
468 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->size, tx->flags, name, value);
469 5551e51d 2006-07-23 devnull 				break;
470 5551e51d 2006-07-23 devnull 			}
471 5551e51d 2006-07-23 devnull 			case FUSE_GETXATTR: {
472 5551e51d 2006-07-23 devnull 				struct fuse_getxattr_in *tx = a;
473 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Getxattr nodeid %#llux size %d name %#q",
474 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->size, tx+1);
475 5551e51d 2006-07-23 devnull 				break;
476 5551e51d 2006-07-23 devnull 			}
477 5551e51d 2006-07-23 devnull 			case FUSE_LISTXATTR: {
478 5551e51d 2006-07-23 devnull 				struct fuse_getxattr_in *tx = a;
479 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Listxattr nodeid %#llux size %d",
480 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->size);
481 5551e51d 2006-07-23 devnull 				break;
482 5551e51d 2006-07-23 devnull 			}
483 5551e51d 2006-07-23 devnull 			case FUSE_REMOVEXATTR: {
484 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Removexattr nodeid %#llux name %#q",
485 5551e51d 2006-07-23 devnull 					hdr->nodeid, a);
486 5551e51d 2006-07-23 devnull 				break;
487 5551e51d 2006-07-23 devnull 			}
488 5551e51d 2006-07-23 devnull 			case FUSE_FLUSH: {
489 5551e51d 2006-07-23 devnull 				struct fuse_flush_in *tx = a;
490 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Flush nodeid %#llux fh %#llux flags %#ux",
491 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->flush_flags);
492 5551e51d 2006-07-23 devnull 				break;
493 5551e51d 2006-07-23 devnull 			}
494 5551e51d 2006-07-23 devnull 			case FUSE_INIT: {
495 5551e51d 2006-07-23 devnull 				struct fuse_init_in *tx = a;
496 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Init major %d minor %d",
497 5551e51d 2006-07-23 devnull 					tx->major, tx->minor);
498 5551e51d 2006-07-23 devnull 				break;
499 5551e51d 2006-07-23 devnull 			}
500 5551e51d 2006-07-23 devnull 			case FUSE_OPENDIR: {
501 5551e51d 2006-07-23 devnull 				struct fuse_open_in *tx = a;
502 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Opendir nodeid %#llux flags %#ux mode %#ux",
503 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->flags, tx->mode);
504 5551e51d 2006-07-23 devnull 				break;
505 5551e51d 2006-07-23 devnull 			}
506 5551e51d 2006-07-23 devnull 			case FUSE_READDIR: {
507 5551e51d 2006-07-23 devnull 				struct fuse_read_in *tx = a;
508 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Readdir nodeid %#llux fh %#llux offset %lld size %ud",
509 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->offset, tx->size);
510 5551e51d 2006-07-23 devnull 				break;
511 5551e51d 2006-07-23 devnull 			}
512 5551e51d 2006-07-23 devnull 			case FUSE_RELEASEDIR: {
513 5551e51d 2006-07-23 devnull 				struct fuse_release_in *tx = a;
514 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Releasedir nodeid %#llux fh %#llux flags %#ux",
515 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->flags); 
516 5551e51d 2006-07-23 devnull 				break;
517 5551e51d 2006-07-23 devnull 			}
518 5551e51d 2006-07-23 devnull 			case FUSE_FSYNCDIR: {
519 5551e51d 2006-07-23 devnull 				struct fuse_fsync_in *tx = a;
520 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Fsyncdir nodeid %#llux fh %#llux flags %#ux",
521 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->fsync_flags);
522 5551e51d 2006-07-23 devnull 				break;
523 5551e51d 2006-07-23 devnull 			}
524 5551e51d 2006-07-23 devnull 			case FUSE_ACCESS: {
525 5551e51d 2006-07-23 devnull 				struct fuse_access_in *tx  = a;
526 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Access nodeid %#llux mask %#ux",
527 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->mask);
528 5551e51d 2006-07-23 devnull 				break;
529 5551e51d 2006-07-23 devnull 			}
530 5551e51d 2006-07-23 devnull 			case FUSE_CREATE: {
531 5551e51d 2006-07-23 devnull 				struct fuse_open_in *tx = a;
532 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Create nodeid %#llx flags %#ux mode %#ux name %#q",
533 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->flags, tx->mode, tx+1);
534 5551e51d 2006-07-23 devnull 				break;
535 5551e51d 2006-07-23 devnull 			}
536 5551e51d 2006-07-23 devnull 		}
537 5551e51d 2006-07-23 devnull 	}else{  /* "%#G", reqhdr, hdr, arg - use reqhdr only for type */
538 5551e51d 2006-07-23 devnull 		struct fuse_out_header *ohdr = va_arg(fmt->args, void*);
539 5551e51d 2006-07-23 devnull 		void *a = va_arg(fmt->args, void*);
540 5551e51d 2006-07-23 devnull 		int len = ohdr->len - sizeof *ohdr;
541 5551e51d 2006-07-23 devnull 		fmtprint(fmt, "unique %#llux ", ohdr->unique);
542 5551e51d 2006-07-23 devnull 		if(ohdr->error){
543 5551e51d 2006-07-23 devnull 			fmtprint(fmt, "error %d %s", ohdr->error, strerror(-ohdr->error));
544 5551e51d 2006-07-23 devnull 		}else
545 5551e51d 2006-07-23 devnull 		switch(hdr->opcode){
546 5551e51d 2006-07-23 devnull 			default: {
547 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "??? opcode %d", hdr->opcode);
548 5551e51d 2006-07-23 devnull 				break;
549 5551e51d 2006-07-23 devnull 			}
550 5551e51d 2006-07-23 devnull 			case FUSE_LOOKUP: {
551 5551e51d 2006-07-23 devnull 				/*
552 5551e51d 2006-07-23 devnull 				 * For a negative entry, can send back ENOENT
553 5551e51d 2006-07-23 devnull 				 * or rx->ino == 0.  
554 5551e51d 2006-07-23 devnull 				 * In protocol version 7.4 and before, can only use
555 5551e51d 2006-07-23 devnull 				 * the ENOENT method.
556 5551e51d 2006-07-23 devnull 				 * Presumably the benefit of sending rx->ino == 0
557 5551e51d 2006-07-23 devnull 				 * is that you can specify the length of time to cache
558 5551e51d 2006-07-23 devnull 				 * the negative result.
559 5551e51d 2006-07-23 devnull 				 */
560 5551e51d 2006-07-23 devnull 				struct fuse_entry_out *rx;
561 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Lookup) ");
562 5551e51d 2006-07-23 devnull 			fmt_entry_out:
563 5551e51d 2006-07-23 devnull 				rx = a;
564 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "nodeid %#llux gen %#llux entry_valid %.20g attr_valid %.20g ",
565 5551e51d 2006-07-23 devnull 					rx->nodeid, rx->generation,
566 5551e51d 2006-07-23 devnull 					rx->entry_valid+rx->entry_valid_nsec*1e-9,
567 5551e51d 2006-07-23 devnull 					rx->attr_valid+rx->attr_valid_nsec*1e-9);
568 5551e51d 2006-07-23 devnull 				fmtprint(fmt, " ino %#llux size %lld blocks %lld atime %.20g mtime %.20g ctime %.20g mode %#uo nlink %d uid %d gid %d rdev %#ux",
569 5551e51d 2006-07-23 devnull 					rx->attr.ino, rx->attr.size, rx->attr.blocks,
570 5551e51d 2006-07-23 devnull 					rx->attr.atime+rx->attr.atimensec*1e-9, 
571 5551e51d 2006-07-23 devnull 					rx->attr.mtime+rx->attr.mtimensec*1e-9,
572 5551e51d 2006-07-23 devnull 					rx->attr.ctime+rx->attr.ctimensec*1e-9,
573 5551e51d 2006-07-23 devnull 					rx->attr.mode, rx->attr.nlink, rx->attr.uid,
574 5551e51d 2006-07-23 devnull 					rx->attr.gid, rx->attr.rdev);
575 5551e51d 2006-07-23 devnull 				break;
576 5551e51d 2006-07-23 devnull 			}
577 5551e51d 2006-07-23 devnull 			case FUSE_FORGET: {
578 5551e51d 2006-07-23 devnull 				/* Can't happen! No reply. */
579 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Forget) can't happen");
580 5551e51d 2006-07-23 devnull 				break;
581 5551e51d 2006-07-23 devnull 			}
582 5551e51d 2006-07-23 devnull 			case FUSE_GETATTR: {
583 5551e51d 2006-07-23 devnull 				struct fuse_attr_out *rx;
584 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Getattr) ");
585 5551e51d 2006-07-23 devnull 			fmt_attr_out:
586 5551e51d 2006-07-23 devnull 				rx = a;
587 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "attr_valid %.20g",
588 5551e51d 2006-07-23 devnull 					rx->attr_valid+rx->attr_valid_nsec*1e-9);
589 5551e51d 2006-07-23 devnull 				fmtprint(fmt, " ino %#llux size %lld blocks %lld atime %.20g mtime %.20g ctime %.20g mode %#uo nlink %d uid %d gid %d rdev %#ux",
590 5551e51d 2006-07-23 devnull 					rx->attr.ino, rx->attr.size, rx->attr.blocks,
591 5551e51d 2006-07-23 devnull 					rx->attr.atime+rx->attr.atimensec*1e-9, 
592 5551e51d 2006-07-23 devnull 					rx->attr.mtime+rx->attr.mtimensec*1e-9,
593 5551e51d 2006-07-23 devnull 					rx->attr.ctime+rx->attr.ctimensec*1e-9,
594 5551e51d 2006-07-23 devnull 					rx->attr.mode, rx->attr.nlink, rx->attr.uid,
595 5551e51d 2006-07-23 devnull 					rx->attr.gid, rx->attr.rdev);
596 5551e51d 2006-07-23 devnull 				break;
597 5551e51d 2006-07-23 devnull 			}
598 5551e51d 2006-07-23 devnull 			case FUSE_SETATTR: {
599 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Setattr) ");
600 5551e51d 2006-07-23 devnull 				goto fmt_attr_out;
601 5551e51d 2006-07-23 devnull 				break;
602 5551e51d 2006-07-23 devnull 			}
603 5551e51d 2006-07-23 devnull 			case FUSE_READLINK: {
604 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Readlink) %#.*q",
605 5551e51d 2006-07-23 devnull 					utfnlen(a, len), a);
606 5551e51d 2006-07-23 devnull 				break;
607 5551e51d 2006-07-23 devnull 			}
608 5551e51d 2006-07-23 devnull 			case FUSE_SYMLINK: {
609 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Symlink) ");
610 5551e51d 2006-07-23 devnull 				goto fmt_entry_out;
611 5551e51d 2006-07-23 devnull 				break;
612 5551e51d 2006-07-23 devnull 			}
613 5551e51d 2006-07-23 devnull 			case FUSE_MKNOD: {
614 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Mknod) ");
615 5551e51d 2006-07-23 devnull 				goto fmt_entry_out;
616 5551e51d 2006-07-23 devnull 				break;
617 5551e51d 2006-07-23 devnull 			}
618 5551e51d 2006-07-23 devnull 			case FUSE_MKDIR: {
619 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Mkdir) ");
620 5551e51d 2006-07-23 devnull 				goto fmt_entry_out;
621 5551e51d 2006-07-23 devnull 				break;
622 5551e51d 2006-07-23 devnull 			}
623 5551e51d 2006-07-23 devnull 			case FUSE_UNLINK: {
624 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Unlink)");
625 5551e51d 2006-07-23 devnull 				break;
626 5551e51d 2006-07-23 devnull 			}
627 5551e51d 2006-07-23 devnull 			case FUSE_RMDIR: {
628 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Rmdir)");
629 5551e51d 2006-07-23 devnull 				break;
630 5551e51d 2006-07-23 devnull 			}
631 5551e51d 2006-07-23 devnull 			case FUSE_RENAME: {
632 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Rename)");
633 5551e51d 2006-07-23 devnull 				break;
634 5551e51d 2006-07-23 devnull 			}
635 5551e51d 2006-07-23 devnull 			case FUSE_LINK: {
636 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Link) ");
637 5551e51d 2006-07-23 devnull 				goto fmt_entry_out;
638 5551e51d 2006-07-23 devnull 				break;
639 5551e51d 2006-07-23 devnull 			}
640 5551e51d 2006-07-23 devnull 			case FUSE_OPEN: {
641 5551e51d 2006-07-23 devnull 				struct fuse_open_out *rx;
642 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Open) ");
643 5551e51d 2006-07-23 devnull 			fmt_open_out:
644 5551e51d 2006-07-23 devnull 				rx = a;
645 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "fh %#llux flags %#ux", rx->fh, rx->open_flags);
646 5551e51d 2006-07-23 devnull 				break;
647 5551e51d 2006-07-23 devnull 			}
648 5551e51d 2006-07-23 devnull 			case FUSE_READ: {
649 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Read) size %d", len);
650 5551e51d 2006-07-23 devnull 				break;
651 5551e51d 2006-07-23 devnull 			}
652 5551e51d 2006-07-23 devnull 			case FUSE_WRITE: {
653 5551e51d 2006-07-23 devnull 				struct fuse_write_out *rx = a;
654 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Write) size %d", rx->size);
655 5551e51d 2006-07-23 devnull 				break;
656 5551e51d 2006-07-23 devnull 			}
657 5551e51d 2006-07-23 devnull 			case FUSE_STATFS: {
658 5551e51d 2006-07-23 devnull 				/*
659 5551e51d 2006-07-23 devnull 				 * Before protocol version 7.4, only first 48 bytes are used.
660 5551e51d 2006-07-23 devnull 				 */
661 5551e51d 2006-07-23 devnull 				struct fuse_statfs_out *rx = a;
662 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Statfs) blocks %lld bfree %lld bavail %lld files %lld ffree %lld bsize %ud namelen %ud frsize %ud",
663 5551e51d 2006-07-23 devnull 					rx->st.blocks, rx->st.bfree, rx->st.bavail,
664 5551e51d 2006-07-23 devnull 					rx->st.files, rx->st.ffree, rx->st.bsize,
665 5551e51d 2006-07-23 devnull 					rx->st.namelen, rx->st.frsize);
666 5551e51d 2006-07-23 devnull 				break;
667 5551e51d 2006-07-23 devnull 			}
668 5551e51d 2006-07-23 devnull 			case FUSE_RELEASE: {
669 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Release)");
670 5551e51d 2006-07-23 devnull 				break;
671 5551e51d 2006-07-23 devnull 			}
672 5551e51d 2006-07-23 devnull 			case FUSE_FSYNC: {
673 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Fsync)");
674 5551e51d 2006-07-23 devnull 				break;
675 5551e51d 2006-07-23 devnull 			}
676 5551e51d 2006-07-23 devnull 			case FUSE_SETXATTR: {
677 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Serxattr)");
678 5551e51d 2006-07-23 devnull 				break;
679 5551e51d 2006-07-23 devnull 			}
680 5551e51d 2006-07-23 devnull 			case FUSE_GETXATTR: {
681 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Getxattr) size %d", len);
682 5551e51d 2006-07-23 devnull 				break;
683 5551e51d 2006-07-23 devnull 			}
684 5551e51d 2006-07-23 devnull 			case FUSE_LISTXATTR: {
685 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Lisrxattr) size %d", len);
686 5551e51d 2006-07-23 devnull 				break;
687 5551e51d 2006-07-23 devnull 			}
688 5551e51d 2006-07-23 devnull 			case FUSE_REMOVEXATTR: {
689 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Removexattr)");
690 5551e51d 2006-07-23 devnull 				break;
691 5551e51d 2006-07-23 devnull 			}
692 5551e51d 2006-07-23 devnull 			case FUSE_FLUSH: {
693 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Flush)");
694 5551e51d 2006-07-23 devnull 				break;
695 5551e51d 2006-07-23 devnull 			}
696 5551e51d 2006-07-23 devnull 			case FUSE_INIT: {
697 5551e51d 2006-07-23 devnull 				struct fuse_init_out *rx = a;
698 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Init) major %d minor %d max_write %d",
699 5551e51d 2006-07-23 devnull 					rx->major, rx->minor, rx->max_write);
700 5551e51d 2006-07-23 devnull 				break;
701 5551e51d 2006-07-23 devnull 			}
702 5551e51d 2006-07-23 devnull 			case FUSE_OPENDIR: {
703 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Opendir) ");
704 5551e51d 2006-07-23 devnull 				goto fmt_open_out;
705 5551e51d 2006-07-23 devnull 				break;
706 5551e51d 2006-07-23 devnull 			}
707 5551e51d 2006-07-23 devnull 			case FUSE_READDIR: {
708 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Readdir) size %d", len);
709 5551e51d 2006-07-23 devnull 				break;
710 5551e51d 2006-07-23 devnull 			}
711 5551e51d 2006-07-23 devnull 			case FUSE_RELEASEDIR: {
712 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Releasedir)");
713 5551e51d 2006-07-23 devnull 				break;
714 5551e51d 2006-07-23 devnull 			}
715 5551e51d 2006-07-23 devnull 			case FUSE_FSYNCDIR: {
716 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Fsyncdir)");
717 5551e51d 2006-07-23 devnull 				break;
718 5551e51d 2006-07-23 devnull 			}
719 5551e51d 2006-07-23 devnull 			case FUSE_ACCESS: {
720 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Access)");
721 5551e51d 2006-07-23 devnull 				break;
722 5551e51d 2006-07-23 devnull 			}
723 5551e51d 2006-07-23 devnull 			case FUSE_CREATE: {
724 5551e51d 2006-07-23 devnull 				struct fuse_create_out *rx = a;
725 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Create) ");
726 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "nodeid %#llux gen %#llux entry_valid %.20g attr_valid %.20g ",
727 5551e51d 2006-07-23 devnull 					rx->e.nodeid, rx->e.generation,
728 5551e51d 2006-07-23 devnull 					rx->e.entry_valid+rx->e.entry_valid_nsec*1e-9,
729 5551e51d 2006-07-23 devnull 					rx->e.attr_valid+rx->e.attr_valid_nsec*1e-9);
730 5551e51d 2006-07-23 devnull 				fmtprint(fmt, " ino %#llux size %lld blocks %lld atime %.20g mtime %.20g ctime %.20g mode %#uo nlink %d uid %d gid %d rdev %#ux",
731 5551e51d 2006-07-23 devnull 					rx->e.attr.ino, rx->e.attr.size, rx->e.attr.blocks,
732 5551e51d 2006-07-23 devnull 					rx->e.attr.atime+rx->e.attr.atimensec*1e-9, 
733 5551e51d 2006-07-23 devnull 					rx->e.attr.mtime+rx->e.attr.mtimensec*1e-9,
734 5551e51d 2006-07-23 devnull 					rx->e.attr.ctime+rx->e.attr.ctimensec*1e-9,
735 5551e51d 2006-07-23 devnull 					rx->e.attr.mode, rx->e.attr.nlink, rx->e.attr.uid,
736 5551e51d 2006-07-23 devnull 					rx->e.attr.gid, rx->e.attr.rdev);
737 5551e51d 2006-07-23 devnull 				fmtprint(fmt, " fh %#llux flags %#ux", rx->o.fh, rx->o.open_flags);
738 5551e51d 2006-07-23 devnull 				break;
739 5551e51d 2006-07-23 devnull 			}
740 5551e51d 2006-07-23 devnull 		}
741 5551e51d 2006-07-23 devnull 	}
742 5551e51d 2006-07-23 devnull 	return 0;
743 5551e51d 2006-07-23 devnull }
744 9b3fcf01 2007-01-18 devnull 
745 9b3fcf01 2007-01-18 devnull #if defined(__APPLE__)
746 9b3fcf01 2007-01-18 devnull #include <sys/param.h>
747 9b3fcf01 2007-01-18 devnull #include <sys/mount.h>
748 9b3fcf01 2007-01-18 devnull #endif
749 5551e51d 2006-07-23 devnull 
750 143cdf57 2006-07-26 devnull /*
751 143cdf57 2006-07-26 devnull  * Mounts a fuse file system on mtpt and returns
752 143cdf57 2006-07-26 devnull  * a file descriptor for the corresponding fuse 
753 143cdf57 2006-07-26 devnull  * message conversation.
754 143cdf57 2006-07-26 devnull  */
755 143cdf57 2006-07-26 devnull int
756 143cdf57 2006-07-26 devnull mountfuse(char *mtpt)
757 143cdf57 2006-07-26 devnull {
758 143cdf57 2006-07-26 devnull #if defined(__linux__)
759 143cdf57 2006-07-26 devnull 	int p[2], pid, fd;
760 143cdf57 2006-07-26 devnull 	char buf[20];
761 143cdf57 2006-07-26 devnull 	
762 143cdf57 2006-07-26 devnull 	if(socketpair(AF_UNIX, SOCK_STREAM, 0, p) < 0)
763 143cdf57 2006-07-26 devnull 		return -1;
764 143cdf57 2006-07-26 devnull 	pid = fork();
765 143cdf57 2006-07-26 devnull 	if(pid < 0)
766 143cdf57 2006-07-26 devnull 		return -1;
767 143cdf57 2006-07-26 devnull 	if(pid == 0){
768 143cdf57 2006-07-26 devnull 		close(p[1]);
769 143cdf57 2006-07-26 devnull 		snprint(buf, sizeof buf, "%d", p[0]);
770 143cdf57 2006-07-26 devnull 		putenv("_FUSE_COMMFD", buf);
771 143cdf57 2006-07-26 devnull 		execlp("fusermount", "fusermount", "--", mtpt, nil);
772 143cdf57 2006-07-26 devnull 		fprint(2, "exec fusermount: %r\n");
773 143cdf57 2006-07-26 devnull 		_exit(1);
774 143cdf57 2006-07-26 devnull 	}
775 143cdf57 2006-07-26 devnull 	close(p[0]);
776 143cdf57 2006-07-26 devnull 	fd = recvfd(p[1]);
777 143cdf57 2006-07-26 devnull 	close(p[1]);
778 143cdf57 2006-07-26 devnull 	return fd;
779 143cdf57 2006-07-26 devnull #elif defined(__FreeBSD__)
780 143cdf57 2006-07-26 devnull 	int pid, fd;
781 143cdf57 2006-07-26 devnull 	char buf[20];
782 143cdf57 2006-07-26 devnull 	
783 143cdf57 2006-07-26 devnull 	if((fd = open("/dev/fuse", ORDWR)) < 0)
784 143cdf57 2006-07-26 devnull 		return -1;
785 143cdf57 2006-07-26 devnull 	snprint(buf, sizeof buf, "%d", fd);
786 143cdf57 2006-07-26 devnull 	
787 143cdf57 2006-07-26 devnull 	pid = fork();
788 143cdf57 2006-07-26 devnull 	if(pid < 0)
789 143cdf57 2006-07-26 devnull 		return -1;
790 143cdf57 2006-07-26 devnull 	if(pid == 0){
791 143cdf57 2006-07-26 devnull 		execlp("mount_fusefs", "mount_fusefs", buf, mtpt, nil);
792 143cdf57 2006-07-26 devnull 		fprint(2, "exec mount_fusefs: %r\n");
793 143cdf57 2006-07-26 devnull 		_exit(1);
794 143cdf57 2006-07-26 devnull 	}
795 143cdf57 2006-07-26 devnull 	return fd;
796 9b3fcf01 2007-01-18 devnull #elif defined(__APPLE__)
797 9b3fcf01 2007-01-18 devnull 	int i, pid, fd, r;
798 9b3fcf01 2007-01-18 devnull 	char buf[20];
799 9b3fcf01 2007-01-18 devnull 	struct vfsconf vfs;
800 4c65127b 2007-01-24 devnull 	char *f;
801 9b3fcf01 2007-01-18 devnull 	
802 9b3fcf01 2007-01-18 devnull 	if(getvfsbyname("fusefs", &vfs) < 0){
803 4c65127b 2007-01-24 devnull 		if(access(f="/System/Library/Extensions/fusefs.kext"
804 4c65127b 2007-01-24 devnull 			"/Contents/Resources/load_fusefs", 0) < 0 &&
805 4c65127b 2007-01-24 devnull 		   access(f="/Library/Extensions/fusefs.kext"
806 4c65127b 2007-01-24 devnull 		   	"/Contents/Resources/load_fusefs", 0) < 0){
807 4c65127b 2007-01-24 devnull 		   	werrstr("cannot find load_fusefs");
808 4c65127b 2007-01-24 devnull 		   	return -1;
809 4c65127b 2007-01-24 devnull 		}
810 4c65127b 2007-01-24 devnull 		if((r=system(f)) < 0){
811 4c65127b 2007-01-24 devnull 			werrstr("%s: %r", f);
812 9b3fcf01 2007-01-18 devnull 			return -1;
813 9b3fcf01 2007-01-18 devnull 		}
814 9b3fcf01 2007-01-18 devnull 		if(r != 0){
815 9b3fcf01 2007-01-18 devnull 			werrstr("load_fusefs failed: exit %d", r);
816 9b3fcf01 2007-01-18 devnull 			return -1;
817 9b3fcf01 2007-01-18 devnull 		}
818 9b3fcf01 2007-01-18 devnull 		if(getvfsbyname("fusefs", &vfs) < 0){
819 9b3fcf01 2007-01-18 devnull 			werrstr("getvfsbyname fusefs: %r");
820 9b3fcf01 2007-01-18 devnull 			return -1;
821 9b3fcf01 2007-01-18 devnull 		}
822 9b3fcf01 2007-01-18 devnull 	}
823 9b3fcf01 2007-01-18 devnull 	
824 9b3fcf01 2007-01-18 devnull 	/* Look for available FUSE device. */
825 9b3fcf01 2007-01-18 devnull 	for(i=0;; i++){
826 9b3fcf01 2007-01-18 devnull 		snprint(buf, sizeof buf, "/dev/fuse%d", i);
827 9b3fcf01 2007-01-18 devnull 		if(access(buf, 0) < 0){
828 9b3fcf01 2007-01-18 devnull 			werrstr("no available fuse devices");
829 9b3fcf01 2007-01-18 devnull 			return -1;
830 9b3fcf01 2007-01-18 devnull 		}
831 9b3fcf01 2007-01-18 devnull 		if((fd = open(buf, ORDWR)) >= 0)
832 9b3fcf01 2007-01-18 devnull 			break;
833 9b3fcf01 2007-01-18 devnull 	}
834 9b3fcf01 2007-01-18 devnull 
835 9b3fcf01 2007-01-18 devnull 	pid = fork();
836 9b3fcf01 2007-01-18 devnull 	if(pid < 0)
837 9b3fcf01 2007-01-18 devnull 		return -1;
838 9b3fcf01 2007-01-18 devnull 	if(pid == 0){
839 9b3fcf01 2007-01-18 devnull 		snprint(buf, sizeof buf, "%d", fd);
840 9b3fcf01 2007-01-18 devnull 		putenv("MOUNT_FUSEFS_CALL_BY_LIB", "");
841 6654bd74 2007-06-20 devnull 		/*
842 6654bd74 2007-06-20 devnull 		 * Different versions of MacFUSE put the
843 6654bd74 2007-06-20 devnull 		 * mount_fusefs binary in different places.
844 6654bd74 2007-06-20 devnull 		 * Try both.
845 6654bd74 2007-06-20 devnull 		 */
846 357cecc1 2007-01-18 devnull 		execl("/System/Library/Filesystems/fusefs.fs/mount_fusefs",
847 357cecc1 2007-01-18 devnull 			"mount_fusefs", buf, mtpt, nil);
848 6654bd74 2007-06-20 devnull 		execl("/System/Library/Filesystems/fusefs.fs/Support/mount_fusefs",
849 6654bd74 2007-06-20 devnull 			"mount_fusefs", buf, mtpt, nil);
850 9b3fcf01 2007-01-18 devnull 		fprint(2, "exec mount_fusefs: %r\n");
851 9b3fcf01 2007-01-18 devnull 		_exit(1);
852 9b3fcf01 2007-01-18 devnull 	}
853 9b3fcf01 2007-01-18 devnull 	return fd;
854 9b3fcf01 2007-01-18 devnull 	
855 143cdf57 2006-07-26 devnull #else
856 143cdf57 2006-07-26 devnull 	werrstr("cannot mount fuse on this system");
857 143cdf57 2006-07-26 devnull 	return -1;
858 143cdf57 2006-07-26 devnull #endif
859 a83ccf38 2006-07-27 devnull }
860 a83ccf38 2006-07-27 devnull 
861 a83ccf38 2006-07-27 devnull void
862 a83ccf38 2006-07-27 devnull waitfuse(void)
863 a83ccf38 2006-07-27 devnull {
864 a83ccf38 2006-07-27 devnull 	waitpid();
865 143cdf57 2006-07-26 devnull }
866 143cdf57 2006-07-26 devnull 
867 143cdf57 2006-07-26 devnull void
868 143cdf57 2006-07-26 devnull unmountfuse(char *mtpt)
869 143cdf57 2006-07-26 devnull {
870 143cdf57 2006-07-26 devnull 	int pid;
871 143cdf57 2006-07-26 devnull 
872 143cdf57 2006-07-26 devnull 	pid = fork();
873 143cdf57 2006-07-26 devnull 	if(pid < 0)
874 143cdf57 2006-07-26 devnull 		return;
875 143cdf57 2006-07-26 devnull 	if(pid == 0){
876 143cdf57 2006-07-26 devnull #if defined(__linux__)
877 143cdf57 2006-07-26 devnull 		execlp("fusermount", "fusermount", "-u", "-z", "--", mtpt, nil);
878 143cdf57 2006-07-26 devnull 		fprint(2, "exec fusermount -u: %r\n");
879 143cdf57 2006-07-26 devnull #else
880 143cdf57 2006-07-26 devnull 		execlp("umount", "umount", mtpt, nil);
881 143cdf57 2006-07-26 devnull 		fprint(2, "exec umount: %r\n");
882 143cdf57 2006-07-26 devnull #endif
883 143cdf57 2006-07-26 devnull 		_exit(1);
884 143cdf57 2006-07-26 devnull 	}
885 143cdf57 2006-07-26 devnull 	waitpid();
886 143cdf57 2006-07-26 devnull }