xv6-cs450/user.h
Russ Cox 1a81e38b17 make new code like old code
Variable declarations at top of function,
separate from initialization.

Use == 0 instead of ! for checking pointers.

Consistent spacing around {, *, casts.

Declare 0-parameter functions as (void) not ().

Integer valued functions return -1 on failure, 0 on success.
2011-01-11 13:01:13 -05:00

38 lines
828 B
C

struct stat;
// system calls
int fork(void);
int exit(void) __attribute__((noreturn));
int wait(void);
int pipe(int*);
int write(int, void*, int);
int read(int, void*, int);
int close(int);
int kill(int);
int exec(char*, char**);
int open(char*, int);
int mknod(char*, short, short);
int unlink(char*);
int fstat(int fd, struct stat*);
int link(char*, char*);
int mkdir(char*);
int chdir(char*);
int dup(int);
int getpid(void);
char* sbrk(int);
int sleep(int);
int uptime(void);
// ulib.c
int stat(char*, struct stat*);
char* strcpy(char*, char*);
void *memmove(void*, void*, int);
char* strchr(const char*, char c);
int strcmp(const char*, const char*);
void printf(int, char*, ...);
char* gets(char*, int max);
uint strlen(char*);
void* memset(void*, int, uint);
void* malloc(uint);
void free(void*);
int atoi(const char*);