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- /*
- * This file is part of the UCB release of Plan 9. It is subject to the license
- * terms in the LICENSE file found in the top-level directory of this
- * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
- * part of the UCB release of Plan 9, including this file, may be copied,
- * modified, propagated, or distributed except according to the terms contained
- * in the LICENSE file.
- */
- #include <u.h>
- #include <libc.h>
- #include <fcall.h>
- #include <thread.h>
- #include <libsec.h>
- #include <9p.h>
- #include "cifs.h"
- #define max(a,b) (((a) > (b))? (a): (b))
- #define min(a,b) (((a) < (b))? (a): (b))
- typedef struct Aux Aux;
- struct Aux {
- Aux *next;
- Aux *prev;
- char *path; /* full path fo file */
- Share *sp; /* this share's info */
- int32_t expire; /* expiration time of cache */
- int32_t off; /* file pos of start of cache */
- int32_t end; /* file pos of end of cache */
- char *cache;
- int fh; /* file handle */
- int sh; /* search handle */
- int32_t srch; /* find first's internal state */
- };
- extern int chatty9p;
- int Checkcase = 1; /* enforce case significance on filenames */
- int Dfstout = 100; /* timeout (in ms) for ping of dfs servers (assume they are local) */
- int Billtrog = 1; /* enable file owner/group resolution */
- int Attachpid; /* pid of proc that attaches (ugh !) */
- char *Debug = nil; /* messages */
- Qid Root; /* root of remote system */
- Share Ipc; /* Share info of IPC$ share */
- Session *Sess; /* current session */
- int Active = IDLE_TIME; /* secs until next keepalive is sent */
- static int Keeppid; /* process ID of keepalive thread */
- Share Shares[MAX_SHARES]; /* table of connected shares */
- int Nshares = 0; /* number of Shares connected */
- Aux *Auxroot = nil; /* linked list of Aux structs */
- char *Host = nil; /* host we are connected to */
- static char *Ipcname = "IPC$";
- #define ptype(x) (((x) & 0xf))
- #define pindex(x) (((x) & 0xff0) >> 4)
- void
- setup(void)
- {
- int fd;
- char buf[32];
- /*
- * This is revolting but I cannot see any other way to get
- * the pid of the server. We need this as Windows doesn't
- * drop the TCP connection when it closes a connection.
- * Thus we keepalive() to detect when/if we are thrown off.
- */
- Attachpid = getpid();
- snprint(buf, sizeof buf, "#p/%d/args", getpid());
- if((fd = open(buf, OWRITE)) >= 0){
- fprint(fd, "%s network", Host);
- close(fd);
- }
- }
- int
- filetableinfo(Fmt *f)
- {
- Aux *ap;
- char *type;
- if((ap = Auxroot) != nil)
- do{
- type = "walked";
- if(ap->sh != -1)
- type = "opendir";
- if(ap->fh != -1)
- type = "openfile";
- fmtprint(f, "%-9s %s\n", type, ap->path);
- ap = ap->next;
- }while(ap != Auxroot);
- return 0;
- }
- Qid
- mkqid(char *s, int is_dir, int32_t vers, int subtype, int32_t path)
- {
- Qid q;
- union { /* align digest suitably */
- uint8_t digest[SHA1dlen];
- uint64_t uvl;
- } u;
- sha1((uint8_t *)s, strlen(s), u.digest, nil);
- q.type = (is_dir)? QTDIR: 0;
- q.vers = vers;
- if(subtype){
- q.path = *((uint64_t *)u.digest) & ~0xfffL;
- q.path |= ((path & 0xff) << 4);
- q.path |= (subtype & 0xf);
- }
- else
- q.path = *((uint64_t *)u.digest) & ~0xfL;
- return q;
- }
- /*
- * used only for root dir and shares
- */
- static void
- V2D(Dir *d, Qid qid, char *name)
- {
- memset(d, 0, sizeof(Dir));
- d->type = 'C';
- d->dev = 1;
- d->name = estrdup9p(name);
- d->uid = estrdup9p("bill");
- d->muid = estrdup9p("boyd");
- d->gid = estrdup9p("trog");
- d->mode = 0755 | DMDIR;
- d->atime = time(nil);
- d->mtime = d->atime;
- d->length = 0;
- d->qid = qid;
- }
- static void
- I2D(Dir *d, Share *sp, char *path, FInfo *fi)
- {
- char *name;
- if((name = strrchr(fi->name, '\\')) != nil)
- name++;
- else
- name = fi->name;
- d->name = estrdup9p(name);
- d->type = 'C';
- d->dev = sp->tid;
- d->uid = estrdup9p("bill");
- d->gid = estrdup9p("trog");
- d->muid = estrdup9p("boyd");
- d->atime = fi->accessed;
- d->mtime = fi->written;
- if(fi->attribs & ATTR_READONLY)
- d->mode = 0444;
- else
- d->mode = 0666;
- d->length = fi->size;
- d->qid = mkqid(path, fi->attribs & ATTR_DIRECTORY, fi->changed, 0, 0);
- if(fi->attribs & ATTR_DIRECTORY){
- d->length = 0;
- d->mode |= DMDIR|0111;
- }
- }
- static void
- responderrstr(Req *r)
- {
- char e[ERRMAX];
- *e = 0;
- rerrstr(e, sizeof e);
- respond(r, e);
- }
- static char *
- newpath(char *path, char *name)
- {
- char *p, *q;
- assert((p = strrchr(path, '/')) != nil);
- if(strcmp(name, "..") == 0){
- if(p == path)
- return estrdup9p("/");
- q = emalloc9p((p-path)+1);
- strecpy(q, q+(p-path)+1, path);
- return q;
- }
- if(strcmp(path, "/") == 0)
- return smprint("/%s", name);
- return smprint("%s/%s", path, name);
- }
- static int
- dirgen(int slot, Dir *d, void *aux)
- {
- int32_t off;
- FInfo *fi;
- int rc, got;
- Aux *a = aux;
- char *npath;
- int numinf = numinfo();
- int slots = min(Sess->mtu, MTU) / sizeof(FInfo);
- if(strcmp(a->path, "/") == 0){
- if(slot < numinf){
- dirgeninfo(slot, d);
- return 0;
- } else
- slot -= numinf;
- if(slot >= Nshares)
- return -1;
- V2D(d, mkqid(Shares[slot].name, 1, 1, Pshare, slot),
- Shares[slot].name);
- return 0;
- }
- off = slot * sizeof(FInfo);
- if(off >= a->off && off < a->end && time(nil) < a->expire)
- goto from_cache;
- if(off == 0){
- fi = (FInfo *)a->cache;
- npath = smprint("%s/*", mapfile(a->path));
- a->sh = T2findfirst(Sess, a->sp, slots, npath, &got, &a->srch,
- (FInfo *)a->cache);
- free(npath);
- if(a->sh == -1)
- return -1;
- a->off = 0;
- a->end = got * sizeof(FInfo);
- if(got >= 2 && strcmp(fi[0].name, ".") == 0 &&
- strcmp(fi[1].name, "..") == 0){
- a->end = (got - 2) * sizeof(FInfo);
- memmove(a->cache, a->cache + sizeof(FInfo)*2,
- a->end - a->off);
- }
- }
- while(off >= a->end && a->sh != -1){
- fi = (FInfo *)(a->cache + (a->end - a->off) - sizeof(FInfo));
- a->off = a->end;
- npath = smprint("%s/%s", mapfile(a->path), fi->name);
- rc = T2findnext(Sess, a->sp, slots, npath,
- &got, &a->srch, (FInfo *)a->cache, a->sh);
- free(npath);
- if(rc == -1 || got == 0)
- break;
- a->end = a->off + got * sizeof(FInfo);
- }
- a->expire = time(nil) + CACHETIME;
- if(got < slots){
- if(a->sh != -1)
- CIFSfindclose2(Sess, a->sp, a->sh);
- a->sh = -1;
- }
- if(off >= a->end)
- return -1;
- from_cache:
- fi = (FInfo *)(a->cache + (off - a->off));
- npath = smprint("%s/%s", mapfile(a->path), fi->name);
- I2D(d, a->sp, npath, fi);
- if(Billtrog == 0)
- upd_names(Sess, a->sp, npath, d);
- free(npath);
- return 0;
- }
- static void
- fsattach(Req *r)
- {
- Aux *a;
- static int first = 1;
- char *spec = r->ifcall.aname;
- if(first)
- setup();
- if(spec && *spec){
- respond(r, "invalid attach specifier");
- return;
- }
- r->ofcall.qid = mkqid("/", 1, 1, Proot, 0);
- r->fid->qid = r->ofcall.qid;
- a = r->fid->aux = emalloc9p(sizeof(Aux));
- memset(a, 0, sizeof(Aux));
- a->path = estrdup9p("/");
- a->sp = nil;
- a->fh = -1;
- a->sh = -1;
- if(Auxroot){
- a->prev = Auxroot;
- a->next = Auxroot->next;
- Auxroot->next->prev = a;
- Auxroot->next = a;
- } else {
- Auxroot = a;
- a->next = a;
- a->prev = a;
- }
- respond(r, nil);
- }
- static char*
- fsclone(Fid *ofid, Fid *fid)
- {
- Aux *oa = ofid->aux;
- Aux *a = emalloc9p(sizeof(Aux));
- fid->aux = a;
- memset(a, 0, sizeof(Aux));
- a->sh = -1;
- a->fh = -1;
- a->sp = oa->sp;
- a->path = estrdup9p(oa->path);
- if(Auxroot){
- a->prev = Auxroot;
- a->next = Auxroot->next;
- Auxroot->next->prev = a;
- Auxroot->next = a;
- } else {
- Auxroot = a;
- a->next = a;
- a->prev = a;
- }
- return nil;
- }
- /*
- * for some weird reason T2queryall() returns share names
- * in lower case so we have to do an extra test against
- * our share table to validate filename case.
- *
- * on top of this here (snell & Wilcox) most of our
- * redirections point to a share of the same name,
- * but some do not, thus the tail of the filename
- * returned by T2queryall() is not the same as
- * the name we wanted.
- *
- * We work around this by not validating the names
- * or files which resolve to share names as they must
- * be correct, having been enforced in the dfs layer.
- */
- static int
- validfile(char *found, char *want, char *winpath, Share *sp)
- {
- char *share;
- if(strcmp(want, "..") == 0)
- return 1;
- if(strcmp(winpath, "/") == 0){
- share = trimshare(sp->name);
- if(cistrcmp(want, share) == 0)
- return strcmp(want, share) == 0;
- /*
- * OK, a DFS redirection points us from a directory XXX
- * to a share named YYY. There is no case checking we can
- * do so we allow either case - it's all we can do.
- */
- return 1;
- }
- if(cistrcmp(found, want) != 0)
- return 0;
- if(!Checkcase)
- return 1;
- if(strcmp(found, want) == 0)
- return 1;
- return 0;
- }
- static char*
- fswalk1(Fid *fid, char *name, Qid *qid)
- {
- FInfo fi;
- int rc, n, i;
- Aux *a = fid->aux;
- static char e[ERRMAX];
- char *p, *npath, *winpath;
- *e = 0;
- npath = newpath(a->path, name);
- if(strcmp(npath, "/") == 0){ /* root dir */
- *qid = mkqid("/", 1, 1, Proot, 0);
- free(a->path);
- a->path = npath;
- fid->qid = *qid;
- return nil;
- }
- if(strrchr(npath, '/') == npath){ /* top level dir */
- if((n = walkinfo(name)) != -1){ /* info file */
- *qid = mkqid(npath, 0, 1, Pinfo, n);
- }
- else { /* volume name */
- for(i = 0; i < Nshares; i++){
- n = strlen(Shares[i].name);
- if(cistrncmp(npath+1, Shares[i].name, n) != 0)
- continue;
- if(Checkcase && strncmp(npath+1, Shares[i].name, n) != 0)
- continue;
- if(npath[n+1] != 0 && npath[n+1] != '/')
- continue;
- break;
- }
- if(i >= Nshares){
- free(npath);
- return "not found";
- }
- a->sp = Shares+i;
- *qid = mkqid(npath, 1, 1, Pshare, i);
- }
- free(a->path);
- a->path = npath;
- fid->qid = *qid;
- return nil;
- }
- /* must be a vanilla file or directory */
- again:
- if(mapshare(npath, &a->sp) == -1){
- rerrstr(e, sizeof(e));
- free(npath);
- return e;
- }
- winpath = mapfile(npath);
- memset(&fi, 0, sizeof fi);
- if(Sess->caps & CAP_NT_SMBS)
- rc = T2queryall(Sess, a->sp, winpath, &fi);
- else
- rc = T2querystandard(Sess, a->sp, winpath, &fi);
- if(rc == -1){
- rerrstr(e, sizeof(e));
- free(npath);
- return e;
- }
- if((a->sp->options & SMB_SHARE_IS_IN_DFS) != 0 &&
- (fi.attribs & ATTR_REPARSE) != 0){
- if(redirect(Sess, a->sp, npath) != -1)
- goto again;
- }
- if((p = strrchr(fi.name, '/')) == nil && (p = strrchr(fi.name, '\\')) == nil)
- p = fi.name;
- else
- p++;
- if(! validfile(p, name, winpath, a->sp)){
- free(npath);
- return "not found";
- }
- *qid = mkqid(npath, fi.attribs & ATTR_DIRECTORY, fi.changed, 0, 0);
- free(a->path);
- a->path = npath;
- fid->qid = *qid;
- return nil;
- }
- static void
- fsstat(Req *r)
- {
- int rc;
- FInfo fi;
- Aux *a = r->fid->aux;
- if(ptype(r->fid->qid.path) == Proot)
- V2D(&r->d, r->fid->qid, "");
- else if(ptype(r->fid->qid.path) == Pinfo)
- dirgeninfo(pindex(r->fid->qid.path), &r->d);
- else if(ptype(r->fid->qid.path) == Pshare)
- V2D(&r->d, r->fid->qid, a->path +1);
- else{
- memset(&fi, 0, sizeof fi);
- if(Sess->caps & CAP_NT_SMBS)
- rc = T2queryall(Sess, a->sp, mapfile(a->path), &fi);
- else
- rc = T2querystandard(Sess, a->sp, mapfile(a->path), &fi);
- if(rc == -1){
- responderrstr(r);
- return;
- }
- I2D(&r->d, a->sp, a->path, &fi);
- if(Billtrog == 0)
- upd_names(Sess, a->sp, mapfile(a->path), &r->d);
- }
- respond(r, nil);
- }
- static int
- smbcreateopen(Aux *a, char *path, int mode, int perm, int is_create,
- int is_dir, FInfo *fip)
- {
- int rc, action, attrs, access, result;
- if(is_create && is_dir){
- if(CIFScreatedirectory(Sess, a->sp, path) == -1)
- return -1;
- return 0;
- }
- if(mode & DMAPPEND) {
- werrstr("filesystem does not support DMAPPEND");
- return -1;
- }
- if(is_create)
- action = 0x12;
- else if(mode & OTRUNC)
- action = 0x02;
- else
- action = 0x01;
- if(perm & 0222)
- attrs = ATTR_NORMAL;
- else
- attrs = ATTR_NORMAL|ATTR_READONLY;
- switch (mode & OMASK){
- case OREAD:
- access = 0;
- break;
- case OWRITE:
- access = 1;
- break;
- case ORDWR:
- access = 2;
- break;
- case OEXEC:
- access = 3;
- break;
- default:
- werrstr("%d bad open mode", mode & OMASK);
- return -1;
- break;
- }
- if(mode & DMEXCL == 0)
- access |= 0x10;
- else
- access |= 0x40;
- if((a->fh = CIFS_SMB_opencreate(Sess, a->sp, path, access, attrs,
- action, &result)) == -1)
- return -1;
- if(Sess->caps & CAP_NT_SMBS)
- rc = T2queryall(Sess, a->sp, mapfile(a->path), fip);
- else
- rc = T2querystandard(Sess, a->sp, mapfile(a->path), fip);
- if(rc == -1){
- fprint(2, "internal error: stat of newly open/created file failed\n");
- return -1;
- }
- if((mode & OEXCL) && (result & 0x8000) == 0){
- werrstr("%d bad open mode", mode & OMASK);
- return -1;
- }
- return 0;
- }
- /* Uncle Bill, you have a lot to answer for... */
- static int
- ntcreateopen(Aux *a, char *path, int mode, int perm, int is_create,
- int is_dir, FInfo *fip)
- {
- int options, result, attrs, flags, access, action, share;
- if(mode & DMAPPEND){
- werrstr("CIFSopen, DMAPPEND not supported");
- return -1;
- }
- if(is_create){
- if(mode & OEXCL)
- action = FILE_OPEN;
- else if(mode & OTRUNC)
- action = FILE_CREATE;
- else
- action = FILE_OVERWRITE_IF;
- } else {
- if(mode & OTRUNC)
- action = FILE_OVERWRITE_IF;
- else
- action = FILE_OPEN_IF;
- }
- flags = 0; /* FIXME: really not sure */
- if(mode & OEXCL)
- share = FILE_NO_SHARE;
- else
- share = FILE_SHARE_ALL;
- switch (mode & OMASK){
- case OREAD:
- access = GENERIC_READ;
- break;
- case OWRITE:
- access = GENERIC_WRITE;
- break;
- case ORDWR:
- access = GENERIC_ALL;
- break;
- case OEXEC:
- access = GENERIC_EXECUTE;
- break;
- default:
- werrstr("%d bad open mode", mode & OMASK);
- return -1;
- break;
- }
- if(is_dir){
- action = FILE_CREATE;
- options = FILE_DIRECTORY_FILE;
- if(perm & 0222)
- attrs = ATTR_DIRECTORY;
- else
- attrs = ATTR_DIRECTORY|ATTR_READONLY;
- } else {
- options = FILE_NON_DIRECTORY_FILE;
- if(perm & 0222)
- attrs = ATTR_NORMAL;
- else
- attrs = ATTR_NORMAL|ATTR_READONLY;
- }
- if(mode & ORCLOSE){
- options |= FILE_DELETE_ON_CLOSE;
- attrs |= ATTR_DELETE_ON_CLOSE;
- }
- if((a->fh = CIFS_NT_opencreate(Sess, a->sp, path, flags, options,
- attrs, access, share, action, &result, fip)) == -1)
- return -1;
- if((mode & OEXCL) && (result & 0x8000) == 0){
- werrstr("%d bad open mode", mode & OMASK);
- return -1;
- }
- return 0;
- }
- static void
- fscreate(Req *r)
- {
- FInfo fi;
- int rc, is_dir;
- char *npath;
- Aux *a = r->fid->aux;
- a->end = a->off = 0;
- a->cache = emalloc9p(max(Sess->mtu, MTU));
- is_dir = (r->ifcall.perm & DMDIR) == DMDIR;
- npath = smprint("%s/%s", a->path, r->ifcall.name);
- if(Sess->caps & CAP_NT_SMBS)
- rc = ntcreateopen(a, mapfile(npath), r->ifcall.mode,
- r->ifcall.perm, 1, is_dir, &fi);
- else
- rc = smbcreateopen(a, mapfile(npath), r->ifcall.mode,
- r->ifcall.perm, 1, is_dir, &fi);
- if(rc == -1){
- free(npath);
- responderrstr(r);
- return;
- }
- r->fid->qid = mkqid(npath, fi.attribs & ATTR_DIRECTORY, fi.changed, 0, 0);
- r->ofcall.qid = r->fid->qid;
- free(a->path);
- a->path = npath;
- respond(r, nil);
- }
- static void
- fsopen(Req *r)
- {
- int rc;
- FInfo fi;
- Aux *a = r->fid->aux;
- a->end = a->off = 0;
- a->cache = emalloc9p(max(Sess->mtu, MTU));
- if(ptype(r->fid->qid.path) == Pinfo){
- if(makeinfo(pindex(r->fid->qid.path)) != -1)
- respond(r, nil);
- else
- respond(r, "cannot generate info");
- return;
- }
- if(r->fid->qid.type & QTDIR){
- respond(r, nil);
- return;
- }
- if(Sess->caps & CAP_NT_SMBS)
- rc = ntcreateopen(a, mapfile(a->path), r->ifcall.mode, 0777,
- 0, 0, &fi);
- else
- rc = smbcreateopen(a, mapfile(a->path), r->ifcall.mode, 0777,
- 0, 0, &fi);
- if(rc == -1){
- responderrstr(r);
- return;
- }
- respond(r, nil);
- }
- static void
- fswrite(Req *r)
- {
- int64_t n, m, got;
- Aux *a = r->fid->aux;
- int64_t len = r->ifcall.count;
- int64_t off = r->ifcall.offset;
- char *buf = r->ifcall.data;
- got = 0;
- n = Sess->mtu -OVERHEAD;
- do{
- if(len - got < n)
- n = len - got;
- m = CIFSwrite(Sess, a->sp, a->fh, off + got, buf + got, n);
- if(m != -1)
- got += m;
- } while(got < len && m >= n);
- r->ofcall.count = got;
- if(m == -1)
- responderrstr(r);
- else
- respond(r, nil);
- }
- static void
- fsread(Req *r)
- {
- int64_t n, m, got;
- Aux *a = r->fid->aux;
- char *buf = r->ofcall.data;
- int64_t len = r->ifcall.count;
- int64_t off = r->ifcall.offset;
- if(ptype(r->fid->qid.path) == Pinfo){
- r->ofcall.count = readinfo(pindex(r->fid->qid.path), buf, len,
- off);
- respond(r, nil);
- return;
- }
- if(r->fid->qid.type & QTDIR){
- dirread9p(r, dirgen, a);
- respond(r, nil);
- return;
- }
- got = 0;
- n = Sess->mtu -OVERHEAD;
- do{
- if(len - got < n)
- n = len - got;
- m = CIFSread(Sess, a->sp, a->fh, off + got, buf + got, n, len);
- if(m != -1)
- got += m;
- } while(got < len && m >= n);
- r->ofcall.count = got;
- if(m == -1)
- responderrstr(r);
- else
- respond(r, nil);
- }
- static void
- fsdestroyfid(Fid *f)
- {
- Aux *a = f->aux;
- if(ptype(f->qid.path) == Pinfo)
- freeinfo(pindex(f->qid.path));
- f->omode = -1;
- if(! a)
- return;
- if(a->fh != -1)
- if(CIFSclose(Sess, a->sp, a->fh) == -1)
- fprint(2, "%s: close failed fh=%d %r\n", argv0, a->fh);
- if(a->sh != -1)
- if(CIFSfindclose2(Sess, a->sp, a->sh) == -1)
- fprint(2, "%s: findclose failed sh=%d %r\n",
- argv0, a->sh);
- if(a->path)
- free(a->path);
- if(a->cache)
- free(a->cache);
- if(a == Auxroot)
- Auxroot = a->next;
- a->prev->next = a->next;
- a->next->prev = a->prev;
- if(a->next == a->prev)
- Auxroot = nil;
- if(a)
- free(a);
- }
- int
- rdonly(Session *s, Share *sp, char *path, int rdonly)
- {
- int rc;
- FInfo fi;
- if(Sess->caps & CAP_NT_SMBS)
- rc = T2queryall(s, sp, path, &fi);
- else
- rc = T2querystandard(s, sp, path, &fi);
- if(rc == -1)
- return -1;
- if((rdonly && !(fi.attribs & ATTR_READONLY)) ||
- (!rdonly && (fi.attribs & ATTR_READONLY))){
- fi.attribs &= ~ATTR_READONLY;
- fi.attribs |= rdonly? ATTR_READONLY: 0;
- rc = CIFSsetinfo(s, sp, path, &fi);
- }
- return rc;
- }
- static void
- fsremove(Req *r)
- {
- int try, rc;
- char e[ERRMAX];
- Aux *ap, *a = r->fid->aux;
- *e = 0;
- if(ptype(r->fid->qid.path) == Proot ||
- ptype(r->fid->qid.path) == Pshare){
- respond(r, "illegal operation");
- return;
- }
- /* close all instences of this file/dir */
- if((ap = Auxroot) != nil)
- do{
- if(strcmp(ap->path, a->path) == 0){
- if(ap->sh != -1)
- CIFSfindclose2(Sess, ap->sp, ap->sh);
- ap->sh = -1;
- if(ap->fh != -1)
- CIFSclose(Sess, ap->sp, ap->fh);
- ap->fh = -1;
- }
- ap = ap->next;
- }while(ap != Auxroot);
- try = 0;
- again:
- if(r->fid->qid.type & QTDIR)
- rc = CIFSdeletedirectory(Sess, a->sp, mapfile(a->path));
- else
- rc = CIFSdeletefile(Sess, a->sp, mapfile(a->path));
- rerrstr(e, sizeof(e));
- if(rc == -1 && try++ == 0 && strcmp(e, "permission denied") == 0 &&
- rdonly(Sess, a->sp, mapfile(a->path), 0) == 0)
- goto again;
- if(rc == -1)
- responderrstr(r);
- else
- respond(r, nil);
- }
- static void
- fswstat(Req *r)
- {
- int fh, result, rc;
- FInfo fi, tmpfi;
- char *p, *from, *npath;
- Aux *a = r->fid->aux;
- if(ptype(r->fid->qid.path) == Proot ||
- ptype(r->fid->qid.path) == Pshare){
- respond(r, "illegal operation");
- return;
- }
- if((r->d.uid && r->d.uid[0]) || (r->d.gid && r->d.gid[0])){
- respond(r, "cannot change ownership");
- return;
- }
- /*
- * get current info
- */
- if(Sess->caps & CAP_NT_SMBS)
- rc = T2queryall(Sess, a->sp, mapfile(a->path), &fi);
- else
- rc = T2querystandard(Sess, a->sp, mapfile(a->path), &fi);
- if(rc == -1){
- werrstr("(query) - %r");
- responderrstr(r);
- return;
- }
- /*
- * always clear the readonly attribute if set,
- * before trying to set any other fields.
- * wstat() fails if the file/dir is readonly
- * and this function is so full of races - who cares about one more?
- */
- rdonly(Sess, a->sp, mapfile(a->path), 0);
- /*
- * rename - one piece of joy, renaming open files
- * is legal (sharing permitting).
- */
- if(r->d.name && r->d.name[0]){
- if((p = strrchr(a->path, '/')) == nil){
- respond(r, "illegal path");
- return;
- }
- npath = emalloc9p((p-a->path)+strlen(r->d.name)+2);
- strecpy(npath, npath+(p- a->path)+2, a->path);
- strcat(npath, r->d.name);
- from = estrdup9p(mapfile(a->path));
- if(CIFSrename(Sess, a->sp, from, mapfile(npath)) == -1){
- werrstr("(rename) - %r");
- responderrstr(r);
- free(npath);
- free(from);
- return;
- }
- free(from);
- free(a->path);
- a->path = npath;
- }
- /*
- * set the files length, do this before setting
- * the file times as open() will alter them
- */
- if(~r->d.length){
- fi.size = r->d.length;
- if(Sess->caps & CAP_NT_SMBS){
- if((fh = CIFS_NT_opencreate(Sess, a->sp, mapfile(a->path),
- 0, FILE_NON_DIRECTORY_FILE,
- ATTR_NORMAL, GENERIC_WRITE, FILE_SHARE_ALL,
- FILE_OPEN_IF, &result, &tmpfi)) == -1){
- werrstr("(set length, open) - %r");
- responderrstr(r);
- return;
- }
- rc = T2setfilelength(Sess, a->sp, fh, &fi);
- CIFSclose(Sess, a->sp, fh);
- if(rc == -1){
- werrstr("(set length), set) - %r");
- responderrstr(r);
- return;
- }
- } else {
- if((fh = CIFS_SMB_opencreate(Sess, a->sp, mapfile(a->path),
- 1, ATTR_NORMAL, 1, &result)) == -1){
- werrstr("(set length, open) failed - %r");
- responderrstr(r);
- return;
- }
- rc = CIFSwrite(Sess, a->sp, fh, fi.size, 0, 0);
- CIFSclose(Sess, a->sp, fh);
- if(rc == -1){
- werrstr("(set length, write) - %r");
- responderrstr(r);
- return;
- }
- }
- }
- /*
- * This doesn't appear to set length or
- * attributes, no idea why, so I do those seperately
- */
- if(~r->d.mtime || ~r->d.atime){
- if(~r->d.mtime)
- fi.written = r->d.mtime;
- if(~r->d.atime)
- fi.accessed = r->d.atime;
- if(T2setpathinfo(Sess, a->sp, mapfile(a->path), &fi) == -1){
- werrstr("(set path info) - %r");
- responderrstr(r);
- return;
- }
- }
- /*
- * always update the readonly flag as
- * we may have cleared it above.
- */
- if(~r->d.mode){
- if(r->d.mode & 0222)
- fi.attribs &= ~ATTR_READONLY;
- else
- fi.attribs |= ATTR_READONLY;
- }
- if(rdonly(Sess, a->sp, mapfile(a->path), fi.attribs & ATTR_READONLY) == -1){
- werrstr("(set info) - %r");
- responderrstr(r);
- return;
- }
- /*
- * Win95 has a broken write-behind cache for metadata
- * on open files (writes go to the cache, reads bypass
- * the cache), so we must flush the file.
- */
- if(r->fid->omode != -1 && CIFSflush(Sess, a->sp, a->fh) == -1){
- werrstr("(flush) %r");
- responderrstr(r);
- return;
- }
- respond(r, nil);
- }
- static void
- fsend(Srv *srv)
- {
- int i;
- USED(srv);
- for(i = 0; i < Nshares; i++)
- CIFStreedisconnect(Sess, Shares+i);
- CIFSlogoff(Sess);
- postnote(PNPROC, Keeppid, "die");
- }
- Srv fs = {
- .destroyfid = fsdestroyfid,
- .attach= fsattach,
- .open= fsopen,
- .create= fscreate,
- .read= fsread,
- .write= fswrite,
- .remove= fsremove,
- .stat= fsstat,
- .wstat= fswstat,
- .clone= fsclone,
- .walk1= fswalk1,
- .end= fsend,
- };
- void
- usage(void)
- {
- fprint(2, "usage: %s [-d name] [-Dvb] [-a auth-method] [-s srvname] "
- "[-n called-name] [-k factotum-params] [-m mntpnt] "
- "host [share...]\n", argv0);
- exits("usage");
- }
- /*
- * SMBecho looks like the function to use for keepalives,
- * sadly the echo packet does not seem to reload the
- * idle timer in Microsoft's servers. Instead we use
- * "get file system size" on each share until we get one that succeeds.
- */
- static void
- keepalive(void)
- {
- char buf[32];
- uint64_t tot, fre;
- int fd, i, slot, rc;
- snprint(buf, sizeof buf, "#p/%d/args", getpid());
- if((fd = open(buf, OWRITE)) >= 0){
- fprint(fd, "%s keepalive", Host);
- close(fd);
- }
- rc = 0;
- slot = 0;
- do{
- sleep(6000);
- if(Active-- != 0)
- continue;
- for(i = 0; i < Nshares; i++){
- if((rc = T2fssizeinfo(Sess, &Shares[slot], &tot, &fre)) == 0)
- break;
- if(++slot >= Nshares)
- slot = 0;
- }
- }while(rc != -1);
- postnote(PNPROC, Attachpid, "die");
- }
- static void
- ding(void *u, char *msg)
- {
- USED(u);
- if(strstr(msg, "alarm") != nil)
- noted(NCONT);
- noted(NDFLT);
- }
- void
- dmpkey(char *s, void *v, int n)
- {
- int i;
- unsigned char *p = (unsigned char *)v;
- print("%s", s);
- for(i = 0; i < n; i++)
- print("%02ux ", *p++);
- print("\n");
- }
- void
- main(int argc, char **argv)
- {
- int i, n;
- int32_t svrtime;
- char windom[64], cname[64];
- char *method, *sysname, *keyp, *mtpt, *svs;
- *cname = 0;
- keyp = "";
- method = nil;
- strcpy(windom, "unknown");
- mtpt = svs = nil;
- notify(ding);
- ARGBEGIN{
- case 'a':
- method = EARGF(autherr());
- break;
- case 'b':
- Billtrog ^= 1;
- break;
- case 'D':
- chatty9p++;
- break;
- case 'd':
- Debug = EARGF(usage());
- break;
- case 'i':
- Checkcase = 0;
- break;
- case 'k':
- keyp = EARGF(usage());
- break;
- case 'm':
- mtpt = EARGF(usage());
- break;
- case 'n':
- strncpy(cname, EARGF(usage()), sizeof(cname));
- cname[sizeof(cname) - 1] = 0;
- break;
- case 's':
- svs = EARGF(usage());
- break;
- case 't':
- Dfstout = atoi(EARGF(usage()));
- break;
- default:
- usage();
- break;
- }ARGEND
- if(argc < 1)
- usage();
- Host = argv[0];
- if(mtpt == nil && svs == nil)
- mtpt = smprint("/n/%s", Host);
- if((sysname = getenv("sysname")) == nil)
- sysname = "unknown";
- if(*cname && (Sess = cifsdial(Host, cname, sysname)) != nil)
- goto connected;
- if(calledname(Host, cname) == 0 &&
- (Sess = cifsdial(Host, cname, sysname)) != nil)
- goto connected;
- strcpy(cname, Host);
- if((Sess = cifsdial(Host, Host, sysname)) != nil ||
- (Sess = cifsdial(Host, "*SMBSERVER", sysname)) != nil)
- goto connected;
- sysfatal("%s - cannot dial, %r\n", Host);
- connected:
- if(CIFSnegotiate(Sess, &svrtime, windom, sizeof windom, cname, sizeof cname) == -1)
- sysfatal("%s - cannot negioate common protocol, %r\n", Host);
- #ifndef DEBUG_MAC
- Sess->secmode &= ~SECMODE_SIGN_ENABLED;
- #endif
- Sess->auth = getauth(method, windom, keyp, Sess->secmode, Sess->chal,
- Sess->challen);
- if(CIFSsession(Sess) < 0)
- sysfatal("session authentication failed, %r\n");
- Sess->slip = svrtime - time(nil);
- Sess->cname = estrdup9p(cname);
- if(CIFStreeconnect(Sess, cname, Ipcname, &Ipc) == -1)
- fprint(2, "%s, %r - can't connect\n", Ipcname);
- Nshares = 0;
- if(argc == 1){
- Share *sip;
- if((n = RAPshareenum(Sess, &Ipc, &sip)) < 1)
- sysfatal("can't enumerate shares: %r - specify share "
- "names on command line\n");
- for(i = 0; i < n; i++){
- #ifdef NO_HIDDEN_SHARES
- int l = strlen(sip[i].name);
- if(l > 1 && sip[i].name[l-1] == '$'){
- free(sip[i].name);
- continue;
- }
- #endif
- memcpy(Shares+Nshares, sip+i, sizeof(Share));
- if(CIFStreeconnect(Sess, Sess->cname,
- Shares[Nshares].name, Shares+Nshares) == -1){
- free(Shares[Nshares].name);
- continue;
- }
- Nshares++;
- }
- free(sip);
- } else
- for(i = 1; i < argc; i++){
- if(CIFStreeconnect(Sess, Sess->cname, argv[i],
- Shares+Nshares) == -1){
- fprint(2, "%s: %s %q - can't connect to share"
- ", %r\n", argv0, Host, argv[i]);
- continue;
- }
- Shares[Nshares].name = strlwr(estrdup9p(argv[i]));
- Nshares++;
- }
- if(Nshares == 0)
- fprint(2, "no available shares\n");
- if((Keeppid = rfork(RFPROC|RFMEM|RFNOTEG|RFFDG|RFNAMEG)) == 0){
- keepalive();
- exits(nil);
- }
- postmountsrv(&fs, svs, mtpt, MREPL|MCREATE);
- exits(nil);
- }
|