xv6/ulib.c
rtm 17a856577f init creates console, opens 0/1/2, runs sh
sh accepts 0-argument commands (like userfs)
reads from console
2006-08-11 13:55:18 +00:00

45 lines
501 B
C

#include "user.h"
int
puts(char *s)
{
return write(1, s, strlen(s));
}
char*
strcpy(char *s, char *t)
{
char *os;
os = s;
while((*s++ = *t++) != 0)
;
return os;
}
unsigned int
strlen(char *s)
{
int n = 0;
for(n = 0; s[n]; n++)
;
return n;
}
char *
gets(char *buf, int max)
{
int i = 0, cc;
char c;
while(i+1 < max){
cc = read(0, &c, 1);
if(cc < 1)
break;
if(c == '\n' || c == '\r')
break;
buf[i++] = c;
}
buf[i] = '\0';
return buf;
}