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#include <u.h>
#include <libc.h>
#include <fcall.h>
char buf[1048576];
enum{ 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*);
int _nsec(vlong*);
struct Call{
char *name;
int (*func)(...);
};
#include "tab.h"
void
usage(void)
{
fprint(2, "usage: %s [-os] entry [arg ...]\n", argv0);
exits("usage");
}
uintptr
parse(char *s)
{
char *t;
uintptr l;
if(strncmp(s, "buf", 3) == 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);
}
void
main(int argc, char *argv[])
{
int i;
int oflag, sflag;
vlong r, nbuf;
Dir d;
char strs[1024];
char ebuf[ERRMAX];
fmtinstall('D', dirfmt);
oflag = 0;
sflag = 0;
ARGBEGIN{
case 'o':
oflag++;
break;
case 's':
sflag++;
break;
default:
usage();
}ARGEND
if(argc < 1 || argc > 1+NARG)
usage();
for(i = 1; i < argc; i++)
arg[i-1] = parse(argv[i]);
for(i = 0; tab[i].name; i++)
if(strcmp(tab[i].name, argv[0]) == 0)
break;
if(i == NTAB){
fprint(2, "syscall: %s not known\n", argv[0]);
exits("unknown");
}
notify(catch);
/* special case for seek, pread, pwrite; vlongs are problematic */
switch(i){
default:
r = (*tab[i].func)(arg[0], arg[1], arg[2], arg[3], arg[4]);
break;
case SEEK:
r = seek(arg[0], strtoll(argv[2], 0, 0), arg[2]);
break;
case PREAD:
r = pread(arg[0], (void*)arg[1], arg[2], strtoll(argv[4], 0, 0));
break;
case PWRITE:
r = pwrite(arg[0], (void*)arg[1], arg[2], strtoll(argv[4], 0, 0));
break;
}
if(r == -1){
errstr(ebuf, sizeof ebuf);
fprint(2, "syscall: return: %lld error: %s\n", r, ebuf);
exits(ebuf);
}
fprint(2, "syscall: return: %lld\n", r);
if(oflag){
nbuf = r;
switch(i){
case _ERRSTR: case ERRSTR: case FD2PATH:
nbuf = strlen(buf);
}
if(write(1, buf, nbuf) != nbuf)
sysfatal("write: %r");
}else if(sflag){
r = convM2D((uchar*)buf, r, &d, strs);
if(r <= BIT16SZ)
print("short stat message\n");
else
print("%D\n", &d);
}
exits(nil);
}
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