From e5888a1ffdae813d7575f5fb02275c6bb07e5199 Mon Sep 17 00:00:00 2001
From: Taru Karttunen <taruti@taruti.net>
Date: Wed, 30 Mar 2011 15:46:40 +0300
Subject: Import sources from 2011-03-30 iso image

---
 sys/src/cmd/syscall/syscall.c | 190 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 190 insertions(+)
 create mode 100755 sys/src/cmd/syscall/syscall.c

(limited to 'sys/src/cmd/syscall/syscall.c')

diff --git a/sys/src/cmd/syscall/syscall.c b/sys/src/cmd/syscall/syscall.c
new file mode 100755
index 000000000..74e3afe2b
--- /dev/null
+++ b/sys/src/cmd/syscall/syscall.c
@@ -0,0 +1,190 @@
+#include <u.h>
+#include <libc.h>
+#include <sys.h>
+#include <fcall.h>
+
+char	buf[1048576];
+#define	NARG	5
+uintptr	arg[NARG];
+
+/* system calls not defined in libc.h */
+int	sysr1(void);
+int	_stat(char*, char*);
+int	_fstat(int, char*);
+int	_errstr(char*);
+int	_wstat(char*, char*);
+int	_fwstat(int, char*);
+int	_read(int, void*, int);
+int	_write(int, void*, int);
+int	_read9p(int, void*, int);
+int	_write9p(int, void*, int);
+int	brk_(void*);
+int	_nfstat(int, void*, int);
+int	_nstat(char*, void*, int);
+int	_nfwstat(int, void*, int);
+int	_nwstat(char*, void*, int);
+int	_fsession(char*, void*, int);
+int	_mount(int, char*, int, char*);
+int	_wait(void*);
+
+struct{
+	char	*name;
+	int	(*func)(...);
+}tab[]={
+#include "tab.h"
+	0,		0
+};
+
+uintptr parse(char *);
+void catch(void*, char*);
+
+char*
+xctime(ulong t)
+{
+	char *buf, *s;
+
+	s = ctime(t);
+	s[strlen(s)-1] = '\0';	/* remove newline */
+	buf = malloc(512);
+	if(buf == nil)
+		sysfatal("can't malloc: %r");
+	snprint(buf, 512, "%s (%lud)", s, t);
+	return buf;
+}
+
+
+char*
+lstime(long l)
+{
+	static char buf[32];
+	char *t;
+	long clk;
+
+	clk = time(0);
+	t = ctime(l);
+	/* 6 months in the past or a day in the future */
+	if(l<clk-180L*24*60*60 || clk+24L*60*60<l){
+		memmove(buf, t+4, 7);		/* month and day */
+		memmove(buf+7, t+23, 5);		/* year */
+	}else
+		memmove(buf, t+4, 12);		/* skip day of week */
+	buf[12] = 0;
+	return buf;
+}
+
+void
+main(int argc, char *argv[])
+{
+	int i, j, c;
+	int oflag, xflag, sflag;
+	vlong r;
+	Dir d;
+	char strs[1024];
+	char ebuf[1024];
+
+	fmtinstall('M', dirmodefmt);
+
+	oflag = 0;
+	xflag = 0;
+	sflag = 0;
+	ARGBEGIN{
+	case 'o':
+		oflag++;
+		break;
+	case 's':
+		sflag++;
+		break;
+	case 'x':
+		xflag++;
+		break;
+	default:
+		goto Usage;
+	}ARGEND
+	if(argc<1 || argc>1+NARG){
+    Usage:
+		fprint(2, "usage: syscall [-ox] entry [args; buf==1MB buffer]\n");
+		fprint(2, "\tsyscall write 1 hello 5\n");
+		fprint(2, "\tsyscall -o errstr buf 1024\n");
+		fprint(2, "\tsyscall -[xs] stat file buf 1024\n");
+		exits("usage");
+	}
+	for(i=1; i<argc; i++)
+		arg[i-1] = parse(argv[i]);
+	notify(catch);
+	for(i=0; tab[i].name; i++)
+		if(strcmp(tab[i].name, argv[0])==0){
+			/* special case for seek, pread, pwrite; vlongs are problematic */
+			if(strcmp(argv[0], "seek") == 0)
+				r=seek(arg[0], strtoll(argv[2], 0, 0), arg[2]);
+			else if(strcmp(argv[0], "pread") == 0)
+				r=pread(arg[0], (void*)arg[1], arg[2], strtoll(argv[4], 0, 0));
+			else if(strcmp(argv[0], "pwrite") == 0)
+				r=pwrite(arg[0], (void*)arg[1], arg[2], strtoll(argv[4], 0, 0));
+			else
+				r=(*tab[i].func)(arg[0], arg[1], arg[2], arg[3], arg[4]);
+			if(r == -1){
+				errstr(ebuf, sizeof ebuf);
+				fprint(2, "syscall: return %lld, error:%s\n", r, ebuf);
+			}else{
+				ebuf[0] = 0;
+				fprint(2, "syscall: return %lld, no error\n", r);
+			}
+			if(oflag)
+				print("%s\n", buf);
+			if(xflag){
+				for(j=0; j<r; j++){
+					if(j%16 == 0)
+						print("%.4x\t", j);
+					c = buf[j]&0xFF;
+					if('!'<=c && c<='~')
+						print(" %c ", c);
+					else
+						print("%.2ux ", c);
+					if(j%16 == 15)
+						print("\n");
+				}
+				print("\n");
+			}
+			if(sflag && r > 0){
+				r = convM2D((uchar*)buf, r, &d, strs);
+				if(r <= BIT16SZ)
+					print("short stat message\n");
+				else{
+					print("[%s] ", d.muid);
+					print("(%.16llux %lud %.2ux) ", d.qid.path, d.qid.vers, d.qid.type);
+					print("%M (%luo) ", d.mode, d.mode);
+					print("%c %d ", d.type, d.dev);
+					print("%s %s ", d.uid, d.gid);
+					print("%lld ", d.length);
+					print("%s ", lstime(d.mtime));
+					print("%s\n", d.name);
+					print("\tmtime: %s\n\tatime: %s\n", xctime(d.mtime), xctime(d.atime));
+				}
+			}
+			exits(ebuf);
+		}
+	fprint(2, "syscall: %s not known\n", argv[0]);
+	exits("unknown");
+}
+
+uintptr
+parse(char *s)
+{
+	char *t;
+	uintptr l;
+
+	if(strcmp(s, "buf") == 0)
+		return (uintptr)buf;
+	
+	l = strtoull(s, &t, 0);
+	if(t>s && *t==0)
+		return l;
+	return (uintptr)s; 
+}
+
+void
+catch(void *, char *msg)
+{
+	fprint(2, "syscall: received note='%s'\n", msg);
+	noted(NDFLT);
+}
-- 
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