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 869875b4 2008-07-04 rsc 	int n, nn;
 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 869875b4 2008-07-04 rsc 		/* struct, one string, and one binary blob */
177 869875b4 2008-07-04 rsc 		if(m->hdr->len <= sizeof(struct fuse_setxattr_in))
178 869875b4 2008-07-04 rsc 			goto bad;
179 869875b4 2008-07-04 rsc 		nn = ((struct fuse_setxattr_in*)m->tx)->size;
180 869875b4 2008-07-04 rsc 		if(m->hdr->len < sizeof(struct fuse_setxattr_in)+nn+1)
181 869875b4 2008-07-04 rsc 			goto bad;
182 869875b4 2008-07-04 rsc 		if(((char*)m->tx)[m->hdr->len-nn-1] != 0)
183 5551e51d 2006-07-23 devnull 			goto bad;
184 5551e51d 2006-07-23 devnull 		break;
185 5551e51d 2006-07-23 devnull 	case FUSE_GETXATTR:
186 5551e51d 2006-07-23 devnull 		/* struct and one string */
187 5551e51d 2006-07-23 devnull 		if(m->hdr->len <= sizeof(struct fuse_getxattr_in)
188 5551e51d 2006-07-23 devnull 		|| ((char*)m->tx)[m->hdr->len-1] != 0)
189 5551e51d 2006-07-23 devnull 			goto bad;
190 5551e51d 2006-07-23 devnull 		break;
191 5551e51d 2006-07-23 devnull 	case FUSE_LISTXATTR:
192 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_getxattr_in))
193 5551e51d 2006-07-23 devnull 			goto bad;
194 5551e51d 2006-07-23 devnull 		break;
195 5551e51d 2006-07-23 devnull 	case FUSE_FLUSH:
196 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_flush_in))
197 5551e51d 2006-07-23 devnull 			goto bad;
198 5551e51d 2006-07-23 devnull 		break;
199 5551e51d 2006-07-23 devnull 	case FUSE_INIT:
200 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_init_in))
201 5551e51d 2006-07-23 devnull 			goto bad;
202 5551e51d 2006-07-23 devnull 		break;
203 5551e51d 2006-07-23 devnull 	case FUSE_ACCESS:
204 5551e51d 2006-07-23 devnull 		if(m->hdr->len < sizeof(struct fuse_access_in))
205 5551e51d 2006-07-23 devnull 			goto bad;
206 5551e51d 2006-07-23 devnull 		break;
207 5551e51d 2006-07-23 devnull 	case FUSE_CREATE:
208 5551e51d 2006-07-23 devnull 		if(m->hdr->len <= sizeof(struct fuse_open_in)
209 5551e51d 2006-07-23 devnull 		|| ((char*)m->tx)[m->hdr->len-1] != 0)
210 5551e51d 2006-07-23 devnull 			goto bad;
211 5551e51d 2006-07-23 devnull 		break;
212 5551e51d 2006-07-23 devnull 	}
213 5551e51d 2006-07-23 devnull 	if(debug)
214 5551e51d 2006-07-23 devnull 		fprint(2, "FUSE -> %G\n", m->hdr, m->tx);
215 5551e51d 2006-07-23 devnull 	return m;
216 5551e51d 2006-07-23 devnull }
217 5551e51d 2006-07-23 devnull 
218 5551e51d 2006-07-23 devnull /*
219 5551e51d 2006-07-23 devnull  * Reply to FUSE request m using additonal 
220 5551e51d 2006-07-23 devnull  * argument buffer arg of size narg bytes.
221 5551e51d 2006-07-23 devnull  * Perhaps should free the FuseMsg here?
222 5551e51d 2006-07-23 devnull  */
223 5551e51d 2006-07-23 devnull void
224 5551e51d 2006-07-23 devnull replyfuse(FuseMsg *m, void *arg, int narg)
225 5551e51d 2006-07-23 devnull {
226 5551e51d 2006-07-23 devnull 	struct iovec vec[2];
227 5551e51d 2006-07-23 devnull 	struct fuse_out_header hdr;
228 5551e51d 2006-07-23 devnull 	int nvec;
229 5551e51d 2006-07-23 devnull 	
230 5551e51d 2006-07-23 devnull 	hdr.len = sizeof hdr + narg;
231 5551e51d 2006-07-23 devnull 	hdr.error = 0;
232 5551e51d 2006-07-23 devnull 	hdr.unique = m->hdr->unique;
233 5551e51d 2006-07-23 devnull 	if(debug)
234 5551e51d 2006-07-23 devnull 		fprint(2, "FUSE <- %#G\n", m->hdr, &hdr, arg);
235 5551e51d 2006-07-23 devnull 
236 5551e51d 2006-07-23 devnull 	vec[0].iov_base = &hdr;
237 5551e51d 2006-07-23 devnull 	vec[0].iov_len = sizeof hdr;
238 5551e51d 2006-07-23 devnull 	nvec = 1;
239 5551e51d 2006-07-23 devnull 	if(arg && narg){
240 5551e51d 2006-07-23 devnull 		vec[1].iov_base = arg;
241 5551e51d 2006-07-23 devnull 		vec[1].iov_len = narg;
242 5551e51d 2006-07-23 devnull 		nvec++;
243 5551e51d 2006-07-23 devnull 	}
244 6f61477d 2008-07-24 rsc 	writev(fusefd, vec, nvec);
245 be8b4b39 2006-08-01 devnull 	freefusemsg(m);
246 5551e51d 2006-07-23 devnull }
247 5551e51d 2006-07-23 devnull 
248 5551e51d 2006-07-23 devnull /*
249 5551e51d 2006-07-23 devnull  * Reply to FUSE request m with errno e.
250 5551e51d 2006-07-23 devnull  */
251 5551e51d 2006-07-23 devnull void
252 5551e51d 2006-07-23 devnull replyfuseerrno(FuseMsg *m, int e)
253 5551e51d 2006-07-23 devnull {
254 5551e51d 2006-07-23 devnull 	struct fuse_out_header hdr;
255 5551e51d 2006-07-23 devnull 	
256 5551e51d 2006-07-23 devnull 	hdr.len = sizeof hdr;
257 5551e51d 2006-07-23 devnull 	hdr.error = -e;	/* FUSE sends negative errnos. */
258 5551e51d 2006-07-23 devnull 	hdr.unique = m->hdr->unique;
259 5551e51d 2006-07-23 devnull 	if(debug)
260 5551e51d 2006-07-23 devnull 		fprint(2, "FUSE <- %#G\n", m->hdr, &hdr, 0);
261 6f61477d 2008-07-24 rsc 	write(fusefd, &hdr, sizeof hdr);
262 be8b4b39 2006-08-01 devnull 	freefusemsg(m);
263 5551e51d 2006-07-23 devnull }
264 5551e51d 2006-07-23 devnull 
265 5551e51d 2006-07-23 devnull void
266 5551e51d 2006-07-23 devnull replyfuseerrstr(FuseMsg *m)
267 5551e51d 2006-07-23 devnull {
268 5551e51d 2006-07-23 devnull 	replyfuseerrno(m, errstr2errno());
269 5551e51d 2006-07-23 devnull }
270 5551e51d 2006-07-23 devnull 
271 5551e51d 2006-07-23 devnull char *fusemtpt;
272 5551e51d 2006-07-23 devnull void
273 5551e51d 2006-07-23 devnull unmountatexit(void)
274 5551e51d 2006-07-23 devnull {
275 5551e51d 2006-07-23 devnull 	if(fusemtpt)
276 5551e51d 2006-07-23 devnull 		unmountfuse(fusemtpt);
277 5551e51d 2006-07-23 devnull }
278 5551e51d 2006-07-23 devnull 
279 5551e51d 2006-07-23 devnull void
280 5551e51d 2006-07-23 devnull initfuse(char *mtpt)
281 5551e51d 2006-07-23 devnull {
282 5551e51d 2006-07-23 devnull 	FuseMsg *m;
283 5551e51d 2006-07-23 devnull 	struct fuse_init_in *tx;
284 5551e51d 2006-07-23 devnull 	struct fuse_init_out rx;
285 5551e51d 2006-07-23 devnull 
286 5551e51d 2006-07-23 devnull 	fusemtpt = mtpt;
287 5551e51d 2006-07-23 devnull 
288 5551e51d 2006-07-23 devnull 	/*
289 5551e51d 2006-07-23 devnull 	 * The 4096 is for the message headers.
290 5551e51d 2006-07-23 devnull 	 * It's a lot, but it's what the FUSE libraries ask for.
291 5551e51d 2006-07-23 devnull 	 */
292 5551e51d 2006-07-23 devnull 	fusemaxwrite = getpagesize();
293 5551e51d 2006-07-23 devnull 	fusebufsize = 4096 + fusemaxwrite;
294 5551e51d 2006-07-23 devnull 
295 5551e51d 2006-07-23 devnull 	if((fusefd = mountfuse(mtpt)) < 0)
296 5551e51d 2006-07-23 devnull 		sysfatal("mountfuse: %r");
297 5551e51d 2006-07-23 devnull 
298 5551e51d 2006-07-23 devnull 	if((m = readfusemsg()) == nil)
299 5551e51d 2006-07-23 devnull 		sysfatal("readfusemsg: %r");
300 5551e51d 2006-07-23 devnull 	if(m->hdr->opcode != FUSE_INIT)
301 5551e51d 2006-07-23 devnull 		sysfatal("fuse: expected FUSE_INIT (26) got %d", m->hdr->opcode);
302 5551e51d 2006-07-23 devnull 	tx = m->tx;
303 5551e51d 2006-07-23 devnull 
304 5551e51d 2006-07-23 devnull 	/*
305 5551e51d 2006-07-23 devnull 	 * Complain if the kernel is too new.
306 5551e51d 2006-07-23 devnull 	 * We could forge ahead, but at least the one time I tried,
307 5551e51d 2006-07-23 devnull 	 * the kernel rejected the newer version by making the 
308 5551e51d 2006-07-23 devnull 	 * writev fail in replyfuse, which is a much more confusing
309 5551e51d 2006-07-23 devnull 	 * error message.  In the future, might be nice to try to 
310 5551e51d 2006-07-23 devnull 	 * support older versions that differ only slightly.
311 5551e51d 2006-07-23 devnull 	 */
312 5551e51d 2006-07-23 devnull 	if(tx->major < FUSE_KERNEL_VERSION 
313 5551e51d 2006-07-23 devnull 	|| (tx->major == FUSE_KERNEL_VERSION && tx->minor < FUSE_KERNEL_MINOR_VERSION))
314 5551e51d 2006-07-23 devnull 		sysfatal("fuse: too kernel version %d.%d older than program version %d.%d",
315 5551e51d 2006-07-23 devnull 			tx->major, tx->minor, FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
316 5551e51d 2006-07-23 devnull 
317 5551e51d 2006-07-23 devnull 	memset(&rx, 0, sizeof rx);
318 5551e51d 2006-07-23 devnull 	rx.major = FUSE_KERNEL_VERSION;
319 5551e51d 2006-07-23 devnull 	rx.minor = FUSE_KERNEL_MINOR_VERSION;
320 5551e51d 2006-07-23 devnull 	rx.max_write = fusemaxwrite;
321 5551e51d 2006-07-23 devnull 	replyfuse(m, &rx, sizeof rx);
322 5551e51d 2006-07-23 devnull }
323 5551e51d 2006-07-23 devnull 
324 5551e51d 2006-07-23 devnull /*
325 5551e51d 2006-07-23 devnull  * Print FUSE messages.  Assuming it is installed as %G,
326 5551e51d 2006-07-23 devnull  * use %G with hdr, arg arguments to format a request,
327 5551e51d 2006-07-23 devnull  * and %#G with reqhdr, hdr, arg arguments to format a response.
328 5551e51d 2006-07-23 devnull  * The reqhdr is necessary in the %#G form because the
329 5551e51d 2006-07-23 devnull  * response does not contain an opcode tag.
330 5551e51d 2006-07-23 devnull  */
331 5551e51d 2006-07-23 devnull int
332 5551e51d 2006-07-23 devnull fusefmt(Fmt *fmt)
333 5551e51d 2006-07-23 devnull {
334 5551e51d 2006-07-23 devnull 	struct fuse_in_header *hdr = va_arg(fmt->args, void*);
335 5551e51d 2006-07-23 devnull 	if((fmt->flags&FmtSharp) == 0){  /* "%G", hdr, arg */
336 5551e51d 2006-07-23 devnull 		void *a = va_arg(fmt->args, void*);
337 5551e51d 2006-07-23 devnull 		fmtprint(fmt, "len %d unique %#llux uid %d gid %d pid %d ",
338 5551e51d 2006-07-23 devnull 			hdr->len, hdr->unique, hdr->uid, hdr->gid, hdr->pid);
339 5551e51d 2006-07-23 devnull 
340 5551e51d 2006-07-23 devnull 		switch(hdr->opcode){
341 5551e51d 2006-07-23 devnull 			default: {
342 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "??? opcode %d", hdr->opcode);
343 5551e51d 2006-07-23 devnull 				break;
344 5551e51d 2006-07-23 devnull 			}
345 5551e51d 2006-07-23 devnull 			case FUSE_LOOKUP: {
346 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Lookup nodeid %#llux name %#q",
347 5551e51d 2006-07-23 devnull 					hdr->nodeid, a);
348 5551e51d 2006-07-23 devnull 				break;
349 5551e51d 2006-07-23 devnull 			}
350 5551e51d 2006-07-23 devnull 			case FUSE_FORGET: {
351 5551e51d 2006-07-23 devnull 				struct fuse_forget_in *tx = a;
352 5551e51d 2006-07-23 devnull 				/* nlookup (a ref count) is a vlong! */
353 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Forget nodeid %#llux nlookup %lld",
354 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->nlookup);
355 5551e51d 2006-07-23 devnull 				break;
356 5551e51d 2006-07-23 devnull 			}
357 5551e51d 2006-07-23 devnull 			case FUSE_GETATTR: {
358 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Getattr nodeid %#llux", hdr->nodeid);
359 5551e51d 2006-07-23 devnull 				break;
360 5551e51d 2006-07-23 devnull 			}
361 5551e51d 2006-07-23 devnull 			case FUSE_SETATTR: {
362 5551e51d 2006-07-23 devnull 				struct fuse_setattr_in *tx = a;
363 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Setattr nodeid %#llux", hdr->nodeid);
364 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_FH)
365 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " fh %#llux", tx->fh);
366 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_SIZE)
367 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " size %lld", tx->size);
368 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_ATIME)
369 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " atime %.20g", tx->atime+tx->atimensec*1e-9);
370 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_MTIME)
371 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " mtime %.20g", tx->mtime+tx->mtimensec*1e-9);
372 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_MODE)
373 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " mode %#uo", tx->mode);
374 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_UID)
375 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " uid %d", tx->uid);
376 5551e51d 2006-07-23 devnull 				if(tx->valid&FATTR_GID)
377 5551e51d 2006-07-23 devnull 					fmtprint(fmt, " gid %d", tx->gid);
378 5551e51d 2006-07-23 devnull 				break;
379 5551e51d 2006-07-23 devnull 			}
380 5551e51d 2006-07-23 devnull 			case FUSE_READLINK: {
381 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Readlink nodeid %#llux", hdr->nodeid);
382 5551e51d 2006-07-23 devnull 				break;
383 5551e51d 2006-07-23 devnull 			}
384 5551e51d 2006-07-23 devnull 			case FUSE_SYMLINK: {
385 5551e51d 2006-07-23 devnull 				char *old, *new;
386 5551e51d 2006-07-23 devnull 				
387 5551e51d 2006-07-23 devnull 				old = a;
388 5551e51d 2006-07-23 devnull 				new = a + strlen(a) + 1;
389 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Symlink nodeid %#llux old %#q new %#q",
390 5551e51d 2006-07-23 devnull 					hdr->nodeid, old, new);
391 5551e51d 2006-07-23 devnull 				break;
392 5551e51d 2006-07-23 devnull 			}
393 5551e51d 2006-07-23 devnull 			case FUSE_MKNOD: {
394 5551e51d 2006-07-23 devnull 				struct fuse_mknod_in *tx = a;
395 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Mknod nodeid %#llux mode %#uo rdev %#ux name %#q",
396 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->mode, tx->rdev, tx+1);
397 5551e51d 2006-07-23 devnull 				break;
398 5551e51d 2006-07-23 devnull 			}
399 5551e51d 2006-07-23 devnull 			case FUSE_MKDIR: {
400 5551e51d 2006-07-23 devnull 				struct fuse_mkdir_in *tx = a;
401 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Mkdir nodeid %#llux mode %#uo name %#q",
402 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->mode, tx+1);
403 5551e51d 2006-07-23 devnull 				break;
404 5551e51d 2006-07-23 devnull 			}
405 5551e51d 2006-07-23 devnull 			case FUSE_UNLINK: {
406 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Unlink nodeid %#llux name %#q",
407 5551e51d 2006-07-23 devnull 					hdr->nodeid, a);
408 5551e51d 2006-07-23 devnull 				break;
409 5551e51d 2006-07-23 devnull 			}
410 5551e51d 2006-07-23 devnull 			case FUSE_RMDIR: {
411 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Rmdir nodeid %#llux name %#q",
412 5551e51d 2006-07-23 devnull 					hdr->nodeid, a);
413 5551e51d 2006-07-23 devnull 				break;
414 5551e51d 2006-07-23 devnull 			}
415 5551e51d 2006-07-23 devnull 			case FUSE_RENAME: {
416 5551e51d 2006-07-23 devnull 				struct fuse_rename_in *tx = a;
417 5551e51d 2006-07-23 devnull 				char *old = (char*)(tx+1);
418 5551e51d 2006-07-23 devnull 				char *new = old + strlen(old) + 1;
419 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Rename nodeid %#llux old %#q newdir %#llux new %#q",
420 5551e51d 2006-07-23 devnull 					hdr->nodeid, old, tx->newdir, new);
421 5551e51d 2006-07-23 devnull 				break;
422 5551e51d 2006-07-23 devnull 			}
423 5551e51d 2006-07-23 devnull 			case FUSE_LINK: {
424 5551e51d 2006-07-23 devnull 				struct fuse_link_in *tx = a;
425 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Link oldnodeid %#llux nodeid %#llux name %#q",
426 5551e51d 2006-07-23 devnull 					tx->oldnodeid, hdr->nodeid, tx+1);
427 5551e51d 2006-07-23 devnull 				break;
428 5551e51d 2006-07-23 devnull 			}
429 5551e51d 2006-07-23 devnull 			case FUSE_OPEN: {
430 5551e51d 2006-07-23 devnull 				struct fuse_open_in *tx = a;
431 5551e51d 2006-07-23 devnull 				/* Should one or both of flags and mode be octal? */
432 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Open nodeid %#llux flags %#ux mode %#ux",
433 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->flags, tx->mode);
434 5551e51d 2006-07-23 devnull 				break;
435 5551e51d 2006-07-23 devnull 			}
436 5551e51d 2006-07-23 devnull 			case FUSE_READ: {
437 5551e51d 2006-07-23 devnull 				struct fuse_read_in *tx = a;
438 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Read nodeid %#llux fh %#llux offset %lld size %ud",
439 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->offset, tx->size);
440 5551e51d 2006-07-23 devnull 				break;
441 5551e51d 2006-07-23 devnull 			}
442 5551e51d 2006-07-23 devnull 			case FUSE_WRITE: {
443 5551e51d 2006-07-23 devnull 				struct fuse_write_in *tx = a;
444 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Write nodeid %#llux fh %#llux offset %lld size %ud flags %#ux",
445 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->offset, tx->size, tx->write_flags);
446 5551e51d 2006-07-23 devnull 				break;
447 5551e51d 2006-07-23 devnull 			}
448 5551e51d 2006-07-23 devnull 			case FUSE_STATFS: {
449 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Statfs");
450 5551e51d 2006-07-23 devnull 				break;
451 5551e51d 2006-07-23 devnull 			}
452 5551e51d 2006-07-23 devnull 			case FUSE_RELEASE: {
453 5551e51d 2006-07-23 devnull 				struct fuse_release_in *tx = a;
454 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Release nodeid %#llux fh %#llux flags %#ux",
455 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->flags); 
456 5551e51d 2006-07-23 devnull 				break;
457 5551e51d 2006-07-23 devnull 			}
458 5551e51d 2006-07-23 devnull 			case FUSE_FSYNC: {
459 5551e51d 2006-07-23 devnull 				struct fuse_fsync_in *tx = a;
460 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Fsync nodeid %#llux fh %#llux flags %#ux",
461 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->fsync_flags);
462 5551e51d 2006-07-23 devnull 				break;
463 5551e51d 2006-07-23 devnull 			}
464 5551e51d 2006-07-23 devnull 			case FUSE_SETXATTR: {
465 5551e51d 2006-07-23 devnull 				struct fuse_setxattr_in *tx = a;
466 5551e51d 2006-07-23 devnull 				char *name = (char*)(tx+1);
467 5551e51d 2006-07-23 devnull 				char *value = name + strlen(name) + 1;
468 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Setxattr nodeid %#llux size %d flags %#ux name %#q value %#q",
469 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->size, tx->flags, name, value);
470 5551e51d 2006-07-23 devnull 				break;
471 5551e51d 2006-07-23 devnull 			}
472 5551e51d 2006-07-23 devnull 			case FUSE_GETXATTR: {
473 5551e51d 2006-07-23 devnull 				struct fuse_getxattr_in *tx = a;
474 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Getxattr nodeid %#llux size %d name %#q",
475 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->size, tx+1);
476 5551e51d 2006-07-23 devnull 				break;
477 5551e51d 2006-07-23 devnull 			}
478 5551e51d 2006-07-23 devnull 			case FUSE_LISTXATTR: {
479 5551e51d 2006-07-23 devnull 				struct fuse_getxattr_in *tx = a;
480 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Listxattr nodeid %#llux size %d",
481 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->size);
482 5551e51d 2006-07-23 devnull 				break;
483 5551e51d 2006-07-23 devnull 			}
484 5551e51d 2006-07-23 devnull 			case FUSE_REMOVEXATTR: {
485 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Removexattr nodeid %#llux name %#q",
486 5551e51d 2006-07-23 devnull 					hdr->nodeid, a);
487 5551e51d 2006-07-23 devnull 				break;
488 5551e51d 2006-07-23 devnull 			}
489 5551e51d 2006-07-23 devnull 			case FUSE_FLUSH: {
490 5551e51d 2006-07-23 devnull 				struct fuse_flush_in *tx = a;
491 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Flush nodeid %#llux fh %#llux flags %#ux",
492 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->flush_flags);
493 5551e51d 2006-07-23 devnull 				break;
494 5551e51d 2006-07-23 devnull 			}
495 5551e51d 2006-07-23 devnull 			case FUSE_INIT: {
496 5551e51d 2006-07-23 devnull 				struct fuse_init_in *tx = a;
497 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Init major %d minor %d",
498 5551e51d 2006-07-23 devnull 					tx->major, tx->minor);
499 5551e51d 2006-07-23 devnull 				break;
500 5551e51d 2006-07-23 devnull 			}
501 5551e51d 2006-07-23 devnull 			case FUSE_OPENDIR: {
502 5551e51d 2006-07-23 devnull 				struct fuse_open_in *tx = a;
503 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Opendir nodeid %#llux flags %#ux mode %#ux",
504 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->flags, tx->mode);
505 5551e51d 2006-07-23 devnull 				break;
506 5551e51d 2006-07-23 devnull 			}
507 5551e51d 2006-07-23 devnull 			case FUSE_READDIR: {
508 5551e51d 2006-07-23 devnull 				struct fuse_read_in *tx = a;
509 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Readdir nodeid %#llux fh %#llux offset %lld size %ud",
510 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->offset, tx->size);
511 5551e51d 2006-07-23 devnull 				break;
512 5551e51d 2006-07-23 devnull 			}
513 5551e51d 2006-07-23 devnull 			case FUSE_RELEASEDIR: {
514 5551e51d 2006-07-23 devnull 				struct fuse_release_in *tx = a;
515 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Releasedir nodeid %#llux fh %#llux flags %#ux",
516 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->flags); 
517 5551e51d 2006-07-23 devnull 				break;
518 5551e51d 2006-07-23 devnull 			}
519 5551e51d 2006-07-23 devnull 			case FUSE_FSYNCDIR: {
520 5551e51d 2006-07-23 devnull 				struct fuse_fsync_in *tx = a;
521 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Fsyncdir nodeid %#llux fh %#llux flags %#ux",
522 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->fh, tx->fsync_flags);
523 5551e51d 2006-07-23 devnull 				break;
524 5551e51d 2006-07-23 devnull 			}
525 5551e51d 2006-07-23 devnull 			case FUSE_ACCESS: {
526 5551e51d 2006-07-23 devnull 				struct fuse_access_in *tx  = a;
527 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Access nodeid %#llux mask %#ux",
528 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->mask);
529 5551e51d 2006-07-23 devnull 				break;
530 5551e51d 2006-07-23 devnull 			}
531 5551e51d 2006-07-23 devnull 			case FUSE_CREATE: {
532 5551e51d 2006-07-23 devnull 				struct fuse_open_in *tx = a;
533 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "Create nodeid %#llx flags %#ux mode %#ux name %#q",
534 5551e51d 2006-07-23 devnull 					hdr->nodeid, tx->flags, tx->mode, tx+1);
535 5551e51d 2006-07-23 devnull 				break;
536 5551e51d 2006-07-23 devnull 			}
537 5551e51d 2006-07-23 devnull 		}
538 5551e51d 2006-07-23 devnull 	}else{  /* "%#G", reqhdr, hdr, arg - use reqhdr only for type */
539 5551e51d 2006-07-23 devnull 		struct fuse_out_header *ohdr = va_arg(fmt->args, void*);
540 5551e51d 2006-07-23 devnull 		void *a = va_arg(fmt->args, void*);
541 5551e51d 2006-07-23 devnull 		int len = ohdr->len - sizeof *ohdr;
542 5551e51d 2006-07-23 devnull 		fmtprint(fmt, "unique %#llux ", ohdr->unique);
543 5551e51d 2006-07-23 devnull 		if(ohdr->error){
544 5551e51d 2006-07-23 devnull 			fmtprint(fmt, "error %d %s", ohdr->error, strerror(-ohdr->error));
545 5551e51d 2006-07-23 devnull 		}else
546 5551e51d 2006-07-23 devnull 		switch(hdr->opcode){
547 5551e51d 2006-07-23 devnull 			default: {
548 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "??? opcode %d", hdr->opcode);
549 5551e51d 2006-07-23 devnull 				break;
550 5551e51d 2006-07-23 devnull 			}
551 5551e51d 2006-07-23 devnull 			case FUSE_LOOKUP: {
552 5551e51d 2006-07-23 devnull 				/*
553 5551e51d 2006-07-23 devnull 				 * For a negative entry, can send back ENOENT
554 5551e51d 2006-07-23 devnull 				 * or rx->ino == 0.  
555 5551e51d 2006-07-23 devnull 				 * In protocol version 7.4 and before, can only use
556 5551e51d 2006-07-23 devnull 				 * the ENOENT method.
557 5551e51d 2006-07-23 devnull 				 * Presumably the benefit of sending rx->ino == 0
558 5551e51d 2006-07-23 devnull 				 * is that you can specify the length of time to cache
559 5551e51d 2006-07-23 devnull 				 * the negative result.
560 5551e51d 2006-07-23 devnull 				 */
561 5551e51d 2006-07-23 devnull 				struct fuse_entry_out *rx;
562 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Lookup) ");
563 5551e51d 2006-07-23 devnull 			fmt_entry_out:
564 5551e51d 2006-07-23 devnull 				rx = a;
565 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "nodeid %#llux gen %#llux entry_valid %.20g attr_valid %.20g ",
566 5551e51d 2006-07-23 devnull 					rx->nodeid, rx->generation,
567 5551e51d 2006-07-23 devnull 					rx->entry_valid+rx->entry_valid_nsec*1e-9,
568 5551e51d 2006-07-23 devnull 					rx->attr_valid+rx->attr_valid_nsec*1e-9);
569 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",
570 5551e51d 2006-07-23 devnull 					rx->attr.ino, rx->attr.size, rx->attr.blocks,
571 5551e51d 2006-07-23 devnull 					rx->attr.atime+rx->attr.atimensec*1e-9, 
572 5551e51d 2006-07-23 devnull 					rx->attr.mtime+rx->attr.mtimensec*1e-9,
573 5551e51d 2006-07-23 devnull 					rx->attr.ctime+rx->attr.ctimensec*1e-9,
574 5551e51d 2006-07-23 devnull 					rx->attr.mode, rx->attr.nlink, rx->attr.uid,
575 5551e51d 2006-07-23 devnull 					rx->attr.gid, rx->attr.rdev);
576 5551e51d 2006-07-23 devnull 				break;
577 5551e51d 2006-07-23 devnull 			}
578 5551e51d 2006-07-23 devnull 			case FUSE_FORGET: {
579 5551e51d 2006-07-23 devnull 				/* Can't happen! No reply. */
580 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Forget) can't happen");
581 5551e51d 2006-07-23 devnull 				break;
582 5551e51d 2006-07-23 devnull 			}
583 5551e51d 2006-07-23 devnull 			case FUSE_GETATTR: {
584 5551e51d 2006-07-23 devnull 				struct fuse_attr_out *rx;
585 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Getattr) ");
586 5551e51d 2006-07-23 devnull 			fmt_attr_out:
587 5551e51d 2006-07-23 devnull 				rx = a;
588 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "attr_valid %.20g",
589 5551e51d 2006-07-23 devnull 					rx->attr_valid+rx->attr_valid_nsec*1e-9);
590 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",
591 5551e51d 2006-07-23 devnull 					rx->attr.ino, rx->attr.size, rx->attr.blocks,
592 5551e51d 2006-07-23 devnull 					rx->attr.atime+rx->attr.atimensec*1e-9, 
593 5551e51d 2006-07-23 devnull 					rx->attr.mtime+rx->attr.mtimensec*1e-9,
594 5551e51d 2006-07-23 devnull 					rx->attr.ctime+rx->attr.ctimensec*1e-9,
595 5551e51d 2006-07-23 devnull 					rx->attr.mode, rx->attr.nlink, rx->attr.uid,
596 5551e51d 2006-07-23 devnull 					rx->attr.gid, rx->attr.rdev);
597 5551e51d 2006-07-23 devnull 				break;
598 5551e51d 2006-07-23 devnull 			}
599 5551e51d 2006-07-23 devnull 			case FUSE_SETATTR: {
600 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Setattr) ");
601 5551e51d 2006-07-23 devnull 				goto fmt_attr_out;
602 5551e51d 2006-07-23 devnull 				break;
603 5551e51d 2006-07-23 devnull 			}
604 5551e51d 2006-07-23 devnull 			case FUSE_READLINK: {
605 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Readlink) %#.*q",
606 5551e51d 2006-07-23 devnull 					utfnlen(a, len), a);
607 5551e51d 2006-07-23 devnull 				break;
608 5551e51d 2006-07-23 devnull 			}
609 5551e51d 2006-07-23 devnull 			case FUSE_SYMLINK: {
610 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Symlink) ");
611 5551e51d 2006-07-23 devnull 				goto fmt_entry_out;
612 5551e51d 2006-07-23 devnull 				break;
613 5551e51d 2006-07-23 devnull 			}
614 5551e51d 2006-07-23 devnull 			case FUSE_MKNOD: {
615 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Mknod) ");
616 5551e51d 2006-07-23 devnull 				goto fmt_entry_out;
617 5551e51d 2006-07-23 devnull 				break;
618 5551e51d 2006-07-23 devnull 			}
619 5551e51d 2006-07-23 devnull 			case FUSE_MKDIR: {
620 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Mkdir) ");
621 5551e51d 2006-07-23 devnull 				goto fmt_entry_out;
622 5551e51d 2006-07-23 devnull 				break;
623 5551e51d 2006-07-23 devnull 			}
624 5551e51d 2006-07-23 devnull 			case FUSE_UNLINK: {
625 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Unlink)");
626 5551e51d 2006-07-23 devnull 				break;
627 5551e51d 2006-07-23 devnull 			}
628 5551e51d 2006-07-23 devnull 			case FUSE_RMDIR: {
629 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Rmdir)");
630 5551e51d 2006-07-23 devnull 				break;
631 5551e51d 2006-07-23 devnull 			}
632 5551e51d 2006-07-23 devnull 			case FUSE_RENAME: {
633 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Rename)");
634 5551e51d 2006-07-23 devnull 				break;
635 5551e51d 2006-07-23 devnull 			}
636 5551e51d 2006-07-23 devnull 			case FUSE_LINK: {
637 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Link) ");
638 5551e51d 2006-07-23 devnull 				goto fmt_entry_out;
639 5551e51d 2006-07-23 devnull 				break;
640 5551e51d 2006-07-23 devnull 			}
641 5551e51d 2006-07-23 devnull 			case FUSE_OPEN: {
642 5551e51d 2006-07-23 devnull 				struct fuse_open_out *rx;
643 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Open) ");
644 5551e51d 2006-07-23 devnull 			fmt_open_out:
645 5551e51d 2006-07-23 devnull 				rx = a;
646 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "fh %#llux flags %#ux", rx->fh, rx->open_flags);
647 5551e51d 2006-07-23 devnull 				break;
648 5551e51d 2006-07-23 devnull 			}
649 5551e51d 2006-07-23 devnull 			case FUSE_READ: {
650 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Read) size %d", len);
651 5551e51d 2006-07-23 devnull 				break;
652 5551e51d 2006-07-23 devnull 			}
653 5551e51d 2006-07-23 devnull 			case FUSE_WRITE: {
654 5551e51d 2006-07-23 devnull 				struct fuse_write_out *rx = a;
655 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Write) size %d", rx->size);
656 5551e51d 2006-07-23 devnull 				break;
657 5551e51d 2006-07-23 devnull 			}
658 5551e51d 2006-07-23 devnull 			case FUSE_STATFS: {
659 5551e51d 2006-07-23 devnull 				/*
660 5551e51d 2006-07-23 devnull 				 * Before protocol version 7.4, only first 48 bytes are used.
661 5551e51d 2006-07-23 devnull 				 */
662 5551e51d 2006-07-23 devnull 				struct fuse_statfs_out *rx = a;
663 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Statfs) blocks %lld bfree %lld bavail %lld files %lld ffree %lld bsize %ud namelen %ud frsize %ud",
664 5551e51d 2006-07-23 devnull 					rx->st.blocks, rx->st.bfree, rx->st.bavail,
665 5551e51d 2006-07-23 devnull 					rx->st.files, rx->st.ffree, rx->st.bsize,
666 5551e51d 2006-07-23 devnull 					rx->st.namelen, rx->st.frsize);
667 5551e51d 2006-07-23 devnull 				break;
668 5551e51d 2006-07-23 devnull 			}
669 5551e51d 2006-07-23 devnull 			case FUSE_RELEASE: {
670 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Release)");
671 5551e51d 2006-07-23 devnull 				break;
672 5551e51d 2006-07-23 devnull 			}
673 5551e51d 2006-07-23 devnull 			case FUSE_FSYNC: {
674 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Fsync)");
675 5551e51d 2006-07-23 devnull 				break;
676 5551e51d 2006-07-23 devnull 			}
677 5551e51d 2006-07-23 devnull 			case FUSE_SETXATTR: {
678 d905d2f5 2012-09-08 rsc 				fmtprint(fmt, "(Setxattr)");
679 5551e51d 2006-07-23 devnull 				break;
680 5551e51d 2006-07-23 devnull 			}
681 5551e51d 2006-07-23 devnull 			case FUSE_GETXATTR: {
682 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Getxattr) size %d", len);
683 5551e51d 2006-07-23 devnull 				break;
684 5551e51d 2006-07-23 devnull 			}
685 5551e51d 2006-07-23 devnull 			case FUSE_LISTXATTR: {
686 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Lisrxattr) size %d", len);
687 5551e51d 2006-07-23 devnull 				break;
688 5551e51d 2006-07-23 devnull 			}
689 5551e51d 2006-07-23 devnull 			case FUSE_REMOVEXATTR: {
690 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Removexattr)");
691 5551e51d 2006-07-23 devnull 				break;
692 5551e51d 2006-07-23 devnull 			}
693 5551e51d 2006-07-23 devnull 			case FUSE_FLUSH: {
694 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Flush)");
695 5551e51d 2006-07-23 devnull 				break;
696 5551e51d 2006-07-23 devnull 			}
697 5551e51d 2006-07-23 devnull 			case FUSE_INIT: {
698 5551e51d 2006-07-23 devnull 				struct fuse_init_out *rx = a;
699 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Init) major %d minor %d max_write %d",
700 5551e51d 2006-07-23 devnull 					rx->major, rx->minor, rx->max_write);
701 5551e51d 2006-07-23 devnull 				break;
702 5551e51d 2006-07-23 devnull 			}
703 5551e51d 2006-07-23 devnull 			case FUSE_OPENDIR: {
704 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Opendir) ");
705 5551e51d 2006-07-23 devnull 				goto fmt_open_out;
706 5551e51d 2006-07-23 devnull 				break;
707 5551e51d 2006-07-23 devnull 			}
708 5551e51d 2006-07-23 devnull 			case FUSE_READDIR: {
709 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Readdir) size %d", len);
710 5551e51d 2006-07-23 devnull 				break;
711 5551e51d 2006-07-23 devnull 			}
712 5551e51d 2006-07-23 devnull 			case FUSE_RELEASEDIR: {
713 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Releasedir)");
714 5551e51d 2006-07-23 devnull 				break;
715 5551e51d 2006-07-23 devnull 			}
716 5551e51d 2006-07-23 devnull 			case FUSE_FSYNCDIR: {
717 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Fsyncdir)");
718 5551e51d 2006-07-23 devnull 				break;
719 5551e51d 2006-07-23 devnull 			}
720 5551e51d 2006-07-23 devnull 			case FUSE_ACCESS: {
721 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Access)");
722 5551e51d 2006-07-23 devnull 				break;
723 5551e51d 2006-07-23 devnull 			}
724 5551e51d 2006-07-23 devnull 			case FUSE_CREATE: {
725 5551e51d 2006-07-23 devnull 				struct fuse_create_out *rx = a;
726 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "(Create) ");
727 5551e51d 2006-07-23 devnull 				fmtprint(fmt, "nodeid %#llux gen %#llux entry_valid %.20g attr_valid %.20g ",
728 5551e51d 2006-07-23 devnull 					rx->e.nodeid, rx->e.generation,
729 5551e51d 2006-07-23 devnull 					rx->e.entry_valid+rx->e.entry_valid_nsec*1e-9,
730 5551e51d 2006-07-23 devnull 					rx->e.attr_valid+rx->e.attr_valid_nsec*1e-9);
731 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",
732 5551e51d 2006-07-23 devnull 					rx->e.attr.ino, rx->e.attr.size, rx->e.attr.blocks,
733 5551e51d 2006-07-23 devnull 					rx->e.attr.atime+rx->e.attr.atimensec*1e-9, 
734 5551e51d 2006-07-23 devnull 					rx->e.attr.mtime+rx->e.attr.mtimensec*1e-9,
735 5551e51d 2006-07-23 devnull 					rx->e.attr.ctime+rx->e.attr.ctimensec*1e-9,
736 5551e51d 2006-07-23 devnull 					rx->e.attr.mode, rx->e.attr.nlink, rx->e.attr.uid,
737 5551e51d 2006-07-23 devnull 					rx->e.attr.gid, rx->e.attr.rdev);
738 5551e51d 2006-07-23 devnull 				fmtprint(fmt, " fh %#llux flags %#ux", rx->o.fh, rx->o.open_flags);
739 5551e51d 2006-07-23 devnull 				break;
740 5551e51d 2006-07-23 devnull 			}
741 5551e51d 2006-07-23 devnull 		}
742 5551e51d 2006-07-23 devnull 	}
743 5551e51d 2006-07-23 devnull 	return 0;
744 5551e51d 2006-07-23 devnull }
745 9b3fcf01 2007-01-18 devnull 
746 9b3fcf01 2007-01-18 devnull #if defined(__APPLE__)
747 9b3fcf01 2007-01-18 devnull #include <sys/param.h>
748 9b3fcf01 2007-01-18 devnull #include <sys/mount.h>
749 9b3fcf01 2007-01-18 devnull #endif
750 5551e51d 2006-07-23 devnull 
751 143cdf57 2006-07-26 devnull /*
752 143cdf57 2006-07-26 devnull  * Mounts a fuse file system on mtpt and returns
753 143cdf57 2006-07-26 devnull  * a file descriptor for the corresponding fuse 
754 143cdf57 2006-07-26 devnull  * message conversation.
755 143cdf57 2006-07-26 devnull  */
756 143cdf57 2006-07-26 devnull int
757 143cdf57 2006-07-26 devnull mountfuse(char *mtpt)
758 143cdf57 2006-07-26 devnull {
759 143cdf57 2006-07-26 devnull #if defined(__linux__)
760 143cdf57 2006-07-26 devnull 	int p[2], pid, fd;
761 143cdf57 2006-07-26 devnull 	char buf[20];
762 143cdf57 2006-07-26 devnull 	
763 143cdf57 2006-07-26 devnull 	if(socketpair(AF_UNIX, SOCK_STREAM, 0, p) < 0)
764 143cdf57 2006-07-26 devnull 		return -1;
765 143cdf57 2006-07-26 devnull 	pid = fork();
766 143cdf57 2006-07-26 devnull 	if(pid < 0)
767 143cdf57 2006-07-26 devnull 		return -1;
768 143cdf57 2006-07-26 devnull 	if(pid == 0){
769 143cdf57 2006-07-26 devnull 		close(p[1]);
770 143cdf57 2006-07-26 devnull 		snprint(buf, sizeof buf, "%d", p[0]);
771 143cdf57 2006-07-26 devnull 		putenv("_FUSE_COMMFD", buf);
772 143cdf57 2006-07-26 devnull 		execlp("fusermount", "fusermount", "--", mtpt, nil);
773 143cdf57 2006-07-26 devnull 		fprint(2, "exec fusermount: %r\n");
774 143cdf57 2006-07-26 devnull 		_exit(1);
775 143cdf57 2006-07-26 devnull 	}
776 143cdf57 2006-07-26 devnull 	close(p[0]);
777 143cdf57 2006-07-26 devnull 	fd = recvfd(p[1]);
778 143cdf57 2006-07-26 devnull 	close(p[1]);
779 143cdf57 2006-07-26 devnull 	return fd;
780 fd997ef0 2008-08-19 jas #elif defined(__FreeBSD__) && !defined(__APPLE__)
781 143cdf57 2006-07-26 devnull 	int pid, fd;
782 143cdf57 2006-07-26 devnull 	char buf[20];
783 143cdf57 2006-07-26 devnull 	
784 143cdf57 2006-07-26 devnull 	if((fd = open("/dev/fuse", ORDWR)) < 0)
785 143cdf57 2006-07-26 devnull 		return -1;
786 143cdf57 2006-07-26 devnull 	snprint(buf, sizeof buf, "%d", fd);
787 143cdf57 2006-07-26 devnull 	
788 143cdf57 2006-07-26 devnull 	pid = fork();
789 143cdf57 2006-07-26 devnull 	if(pid < 0)
790 143cdf57 2006-07-26 devnull 		return -1;
791 143cdf57 2006-07-26 devnull 	if(pid == 0){
792 143cdf57 2006-07-26 devnull 		execlp("mount_fusefs", "mount_fusefs", buf, mtpt, nil);
793 143cdf57 2006-07-26 devnull 		fprint(2, "exec mount_fusefs: %r\n");
794 143cdf57 2006-07-26 devnull 		_exit(1);
795 143cdf57 2006-07-26 devnull 	}
796 143cdf57 2006-07-26 devnull 	return fd;
797 9b3fcf01 2007-01-18 devnull #elif defined(__APPLE__)
798 9b3fcf01 2007-01-18 devnull 	int i, pid, fd, r;
799 9b3fcf01 2007-01-18 devnull 	char buf[20];
800 9b3fcf01 2007-01-18 devnull 	struct vfsconf vfs;
801 d905d2f5 2012-09-08 rsc 	char *f, *v;
802 9b3fcf01 2007-01-18 devnull 	
803 d905d2f5 2012-09-08 rsc 	if(getvfsbyname(v="osxfusefs", &vfs) < 0 && getvfsbyname(v="fusefs", &vfs) < 0){
804 d905d2f5 2012-09-08 rsc 		if(access((v="osxfusefs", f="/Library/Filesystems/osxfusefs.fs"
805 d905d2f5 2012-09-08 rsc 			"/Support/load_osxfusefs"), 0) < 0 &&
806 d905d2f5 2012-09-08 rsc 		   access((v="fusefs", f="/System/Library/Extensions/fusefs.kext"
807 d905d2f5 2012-09-08 rsc 			"/Contents/Resources/load_fusefs"), 0) < 0 &&
808 4c65127b 2007-01-24 devnull 		   access(f="/Library/Extensions/fusefs.kext"
809 ebda53e1 2007-08-22 rsc 		   	"/Contents/Resources/load_fusefs", 0) < 0 &&
810 83ab7d88 2007-11-27 rsc 		   access(f="/Library/Filesystems"
811 83ab7d88 2007-11-27 rsc 				  "/fusefs.fs/Support/load_fusefs", 0) < 0 &&
812 ebda53e1 2007-08-22 rsc 		   access(f="/System/Library/Filesystems"
813 ebda53e1 2007-08-22 rsc 		         "/fusefs.fs/Support/load_fusefs", 0) < 0){
814 4c65127b 2007-01-24 devnull 		   	werrstr("cannot find load_fusefs");
815 4c65127b 2007-01-24 devnull 		   	return -1;
816 4c65127b 2007-01-24 devnull 		}
817 4c65127b 2007-01-24 devnull 		if((r=system(f)) < 0){
818 4c65127b 2007-01-24 devnull 			werrstr("%s: %r", f);
819 9b3fcf01 2007-01-18 devnull 			return -1;
820 9b3fcf01 2007-01-18 devnull 		}
821 9b3fcf01 2007-01-18 devnull 		if(r != 0){
822 9b3fcf01 2007-01-18 devnull 			werrstr("load_fusefs failed: exit %d", r);
823 9b3fcf01 2007-01-18 devnull 			return -1;
824 9b3fcf01 2007-01-18 devnull 		}
825 d905d2f5 2012-09-08 rsc 		if(getvfsbyname(v, &vfs) < 0){
826 d905d2f5 2012-09-08 rsc 			werrstr("getvfsbyname %s: %r", v);
827 9b3fcf01 2007-01-18 devnull 			return -1;
828 9b3fcf01 2007-01-18 devnull 		}
829 9b3fcf01 2007-01-18 devnull 	}
830 9b3fcf01 2007-01-18 devnull 	
831 9b3fcf01 2007-01-18 devnull 	/* Look for available FUSE device. */
832 9b3fcf01 2007-01-18 devnull 	for(i=0;; i++){
833 d905d2f5 2012-09-08 rsc 		snprint(buf, sizeof buf, "/dev/%.*s%d", strlen(v)-2, v, i);
834 9b3fcf01 2007-01-18 devnull 		if(access(buf, 0) < 0){
835 9b3fcf01 2007-01-18 devnull 			werrstr("no available fuse devices");
836 9b3fcf01 2007-01-18 devnull 			return -1;
837 9b3fcf01 2007-01-18 devnull 		}
838 9b3fcf01 2007-01-18 devnull 		if((fd = open(buf, ORDWR)) >= 0)
839 9b3fcf01 2007-01-18 devnull 			break;
840 9b3fcf01 2007-01-18 devnull 	}
841 9b3fcf01 2007-01-18 devnull 
842 9b3fcf01 2007-01-18 devnull 	pid = fork();
843 9b3fcf01 2007-01-18 devnull 	if(pid < 0)
844 9b3fcf01 2007-01-18 devnull 		return -1;
845 9b3fcf01 2007-01-18 devnull 	if(pid == 0){
846 9b3fcf01 2007-01-18 devnull 		snprint(buf, sizeof buf, "%d", fd);
847 9b3fcf01 2007-01-18 devnull 		putenv("MOUNT_FUSEFS_CALL_BY_LIB", "");
848 6654bd74 2007-06-20 devnull 		/*
849 6654bd74 2007-06-20 devnull 		 * Different versions of MacFUSE put the
850 6654bd74 2007-06-20 devnull 		 * mount_fusefs binary in different places.
851 83ab7d88 2007-11-27 rsc 		 * Try all.
852 6654bd74 2007-06-20 devnull 		 */
853 d905d2f5 2012-09-08 rsc 		/* Lion OSXFUSE location */
854 d905d2f5 2012-09-08 rsc 		putenv("MOUNT_FUSEFS_DAEMON_PATH",
855 d905d2f5 2012-09-08 rsc 			   "/Library/Filesystems/osxfusefs.fs/Support/mount_osxfusefs");
856 d905d2f5 2012-09-08 rsc 		execl("/Library/Filesystems/osxfusefs.fs/Support/mount_osxfusefs",
857 d905d2f5 2012-09-08 rsc 			  "mount_osxfusefs", buf, mtpt, nil);
858 d905d2f5 2012-09-08 rsc 
859 83ab7d88 2007-11-27 rsc 		/* Leopard location */
860 83ab7d88 2007-11-27 rsc 		putenv("MOUNT_FUSEFS_DAEMON_PATH",
861 83ab7d88 2007-11-27 rsc 			   "/Library/Filesystems/fusefs.fs/Support/mount_fusefs");
862 83ab7d88 2007-11-27 rsc 		execl("/Library/Filesystems/fusefs.fs/Support/mount_fusefs",
863 83ab7d88 2007-11-27 rsc 			  "mount_fusefs", buf, mtpt, nil);
864 83ab7d88 2007-11-27 rsc 
865 83ab7d88 2007-11-27 rsc 		/* possible Tiger locations */
866 357cecc1 2007-01-18 devnull 		execl("/System/Library/Filesystems/fusefs.fs/mount_fusefs",
867 357cecc1 2007-01-18 devnull 			"mount_fusefs", buf, mtpt, nil);
868 6654bd74 2007-06-20 devnull 		execl("/System/Library/Filesystems/fusefs.fs/Support/mount_fusefs",
869 6654bd74 2007-06-20 devnull 			"mount_fusefs", buf, mtpt, nil);
870 9b3fcf01 2007-01-18 devnull 		fprint(2, "exec mount_fusefs: %r\n");
871 9b3fcf01 2007-01-18 devnull 		_exit(1);
872 9b3fcf01 2007-01-18 devnull 	}
873 9b3fcf01 2007-01-18 devnull 	return fd;
874 9b3fcf01 2007-01-18 devnull 	
875 143cdf57 2006-07-26 devnull #else
876 143cdf57 2006-07-26 devnull 	werrstr("cannot mount fuse on this system");
877 143cdf57 2006-07-26 devnull 	return -1;
878 143cdf57 2006-07-26 devnull #endif
879 a83ccf38 2006-07-27 devnull }
880 a83ccf38 2006-07-27 devnull 
881 a83ccf38 2006-07-27 devnull void
882 a83ccf38 2006-07-27 devnull waitfuse(void)
883 a83ccf38 2006-07-27 devnull {
884 a83ccf38 2006-07-27 devnull 	waitpid();
885 143cdf57 2006-07-26 devnull }
886 143cdf57 2006-07-26 devnull 
887 143cdf57 2006-07-26 devnull void
888 143cdf57 2006-07-26 devnull unmountfuse(char *mtpt)
889 143cdf57 2006-07-26 devnull {
890 143cdf57 2006-07-26 devnull 	int pid;
891 143cdf57 2006-07-26 devnull 
892 143cdf57 2006-07-26 devnull 	pid = fork();
893 143cdf57 2006-07-26 devnull 	if(pid < 0)
894 143cdf57 2006-07-26 devnull 		return;
895 143cdf57 2006-07-26 devnull 	if(pid == 0){
896 143cdf57 2006-07-26 devnull #if defined(__linux__)
897 143cdf57 2006-07-26 devnull 		execlp("fusermount", "fusermount", "-u", "-z", "--", mtpt, nil);
898 143cdf57 2006-07-26 devnull 		fprint(2, "exec fusermount -u: %r\n");
899 143cdf57 2006-07-26 devnull #else
900 143cdf57 2006-07-26 devnull 		execlp("umount", "umount", mtpt, nil);
901 143cdf57 2006-07-26 devnull 		fprint(2, "exec umount: %r\n");
902 143cdf57 2006-07-26 devnull #endif
903 143cdf57 2006-07-26 devnull 		_exit(1);
904 143cdf57 2006-07-26 devnull 	}
905 143cdf57 2006-07-26 devnull 	waitpid();
906 143cdf57 2006-07-26 devnull }