1 files changed, 124 insertions, 0 deletions
diff --git a/sys/src/cmd/ip/cifsd/share.c b/sys/src/cmd/ip/cifsd/share.c
new file mode 100644
index 000000000..e14014085
--- /dev/null
+++ b/sys/src/cmd/ip/cifsd/share.c
@@ -0,0 +1,124 @@
+#include <u.h>
+#include <libc.h>
+#include "dat.h"
+#include "fns.h"
+
+static int
+run9fs(char *arg)
+{
+	char buf[1024], *argv[3], *s;
+	Waitmsg *w;
+	int fd, pid;
+
+	switch(pid = rfork(RFCFDG|RFREND|RFPROC)){
+	case -1:
+		return -1;
+	case 0:
+		open("/dev/null", ORDWR);
+		snprint(buf, sizeof(buf), "/sys/log/%s", progname);
+		if((fd = open(buf, OWRITE)) >= 0)
+			seek(fd, 0, 2);
+		else
+			fd = 0;
+		dup(fd, 1);
+		dup(fd, 2);
+		argv[0] = "/bin/9fs";
+		argv[1] = arg;
+		argv[2] = 0;
+		exec(argv[0], argv);
+		exits("failed to exec 9fs");
+	}
+	for (;;) {
+		if((w = wait()) == nil)
+			return -1;
+		if (w->pid == pid)
+			break;
+		free(w);
+	}
+	if(w->msg[0]){
+		if(s = strchr(w->msg, ':'))
+			s = s+1;
+		else
+			s = w->msg;
+		werrstr("%s", s);
+		free(w);
+		return -1;
+	} else {
+		free(w);
+		return 0;
+	}
+}
+
+static Share *shares;
+
+Share*
+mapshare(char *path)
+{
+	char *tmp, *tmp2, *name, *root, *service, *fsname, *remark;
+	int stype;
+	Share *s;
+
+	if(name = strrchr(path, '/'))
+		name++;
+	else if(name = strrchr(path, '\\'))
+		name++;
+	else
+		name = path;
+	if(name==nil || *name==0 || *name=='.' || strchrs(name, "\\* ") || strstr(name, ".."))
+		return nil;
+	root = tmp = smprint("/n/%s", name);
+	name = strtr(strrchr(root, '/')+1, tolowerrune);
+	service = "A:";
+	stype = STYPE_DISKTREE;
+	fsname = "9fs";
+	remark = tmp2 = smprint("9fs %s; cd %s", name, root);
+	if(!strcmp(name, "local")){
+		root = "/";
+		fsname = "local";
+		remark = "The standard namespace";
+	}
+	if(!strcmp(name, "ipc$")){
+		root = "/dev/null";
+		name = "IPC$";
+		fsname = "";
+		service = "IPC";
+		stype = STYPE_IPC;
+		remark = "The IPC service";
+	}
+
+	for(s = shares; s; s=s->next)
+		if(!strcmp(s->name, name))
+			goto out;
+
+	logit("mapshare %s -> %s %s %s", path, service, name, root);
+
+	if(!strcmp(service, "A:") && (stype == STYPE_DISKTREE)){
+		if(!strcmp(fsname, "9fs") && (run9fs(name) < 0)){
+			logit("9fs %s: %r", name);
+			goto out;
+		}
+	}
+
+	s = malloc(sizeof(*s));
+	s->service = strdup(service);
+	s->stype = stype;
+
+	s->name = strdup(name);
+	s->root = strdup(root);
+
+	s->remark = strdup(remark);
+	s->fsname = strdup(fsname);
+	s->namelen = 255;
+	s->sectorsize = 0x200;
+	s->blocksize = 0x2000;
+	s->allocsize = 0;
+	s->freesize = s->blocksize;
+
+	s->next = shares;
+	shares = s;
+
+out:
+	free(tmp);
+	free(tmp2);
+	return s;
+}