Initial revision

src/cmd/sam/plan9.c

@@ -0,0 +1,185 @@
+#include "sam.h"
+
+Rune	samname[] = L"~~sam~~";
+
+Rune *left[]= {
+	L"{[(<«",
+	L"\n",
+	L"'\"`",
+	0
+};
+Rune *right[]= {
+	L"}])>»",
+	L"\n",
+	L"'\"`",
+	0
+};
+
+char	RSAM[] = "sam";
+char	SAMTERM[] = "/bin/aux/samterm";
+char	HOME[] = "home";
+char	TMPDIR[] = "/tmp";
+char	SH[] = "rc";
+char	SHPATH[] = "/bin/rc";
+char	RX[] = "rx";
+char	RXPATH[] = "/bin/rx";
+char	SAMSAVECMD[] = "/bin/rc\n/sys/lib/samsave";
+
+void
+dprint(char *z, ...)
+{
+	char buf[BLOCKSIZE];
+	va_list arg;
+
+	va_start(arg, z);
+	vseprint(buf, &buf[BLOCKSIZE], z, arg);
+	va_end(arg);
+	termwrite(buf);
+}
+
+void
+print_ss(char *s, String *a, String *b)
+{
+	dprint("?warning: %s: `%.*S' and `%.*S'\n", s, a->n, a->s, b->n, b->s);
+}
+
+void
+print_s(char *s, String *a)
+{
+	dprint("?warning: %s `%.*S'\n", s, a->n, a->s);
+}
+
+char*
+getuser(void)
+{
+	static char user[64];
+	int fd;
+
+	if(user[0] == 0){
+		fd = open("/dev/user", 0);
+		if(fd<0 || read(fd, user, sizeof user-1)<=0)
+			strcpy(user, "none");
+		close(fd);
+	}
+	return user;
+}
+
+int
+statfile(char *name, ulong *dev, uvlong *id, long *time, long *length, long *appendonly)
+{
+	Dir *dirb;
+
+	dirb = dirstat(name);
+	if(dirb == nil)
+		return -1;
+	if(dev)
+		*dev = dirb->type|(dirb->dev<<16);
+	if(id)
+		*id = dirb->qid.path;
+	if(time)
+		*time = dirb->mtime;
+	if(length)
+		*length = dirb->length;
+	if(appendonly)
+		*appendonly = dirb->mode & DMAPPEND;
+	free(dirb);
+	return 1;
+}
+
+int
+statfd(int fd, ulong *dev, uvlong *id, long *time, long *length, long *appendonly)
+{
+	Dir *dirb;
+
+	dirb = dirfstat(fd);
+	if(dirb == nil)
+		return -1;
+	if(dev)
+		*dev = dirb->type|(dirb->dev<<16);
+	if(id)
+		*id = dirb->qid.path;
+	if(time)
+		*time = dirb->mtime;
+	if(length)
+		*length = dirb->length;
+	if(appendonly)
+		*appendonly = dirb->mode & DMAPPEND;
+	free(dirb);
+	return 1;
+}
+
+void
+notifyf(void *a, char *s)
+{
+	USED(a);
+	if(bpipeok && strcmp(s, "sys: write on closed pipe") == 0)
+		noted(NCONT);
+	if(strcmp(s, "interrupt") == 0)
+		noted(NCONT);
+	panicking = 1;
+	rescue();
+	noted(NDFLT);
+}
+
+int
+newtmp(int num)
+{
+	int i, fd;
+	static char	tempnam[30];
+
+	i = getpid();
+	do
+		snprint(tempnam, sizeof tempnam, "%s/%d%.4s%dsam", TMPDIR, num, getuser(), i++);
+	while(access(tempnam, 0) == 0);
+	fd = create(tempnam, ORDWR|OCEXEC|ORCLOSE, 0000);
+	if(fd < 0){
+		remove(tempnam);
+		fd = create(tempnam, ORDWR|OCEXEC|ORCLOSE, 0000);
+	}
+	return fd;
+}
+
+int
+waitfor(int pid)
+{
+	int msg;
+	Waitmsg *w;
+
+	while((w = wait()) != nil){
+		if(w->pid != pid){
+			free(w);
+			continue;
+		}
+		msg = (w->msg[0] != '\0');
+		free(w);
+		return msg;
+	}
+	return -1;
+}
+
+void
+samerr(char *buf)
+{
+	sprint(buf, "%s/sam.err", TMPDIR);
+}
+
+void*
+emalloc(ulong n)
+{
+	void *p;
+
+	p = malloc(n);
+	if(p == 0)
+		panic("malloc fails");
+	memset(p, 0, n);
+	return p;
+}
+
+void*
+erealloc(void *p, ulong n)
+{
+	p = realloc(p, n);
+	if(p == 0)
+		panic("realloc fails");
+	return p;
+}