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/* $begin csapp.h */ |
#ifndef __CSAPP_H__ |
#define __CSAPP_H__ |
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#include <stdio.h> |
#include <stdlib.h> |
#include <unistd.h> |
#include <string.h> |
#include <ctype.h> |
#include <setjmp.h> |
#include <signal.h> |
#include <sys/time.h> |
#include <sys/types.h> |
#include <sys/wait.h> |
#include <sys/stat.h> |
#include <fcntl.h> |
#include <sys/mman.h> |
#include <errno.h> |
#include <math.h> |
#include <pthread.h> |
#include <semaphore.h> |
#include <sys/socket.h> |
#include <netdb.h> |
#include <netinet/in.h> |
#include <arpa/inet.h> |
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/* Default file permissions are DEF_MODE & ~DEF_UMASK */ |
/* $begin createmasks */ |
#define DEF_MODE S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH |
#define DEF_UMASK S_IWGRP|S_IWOTH |
/* $end createmasks */ |
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/* Simplifies calls to bind(), connect(), and accept() */ |
/* $begin sockaddrdef */ |
typedef struct sockaddr SA; |
/* $end sockaddrdef */ |
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/* Persistent state for the robust I/O (Rio) package */ |
/* $begin rio_t */ |
#define RIO_BUFSIZE 8192 |
typedef struct { |
int rio_fd; /* descriptor for this internal buf */ |
int rio_cnt; /* unread bytes in internal buf */ |
char *rio_bufptr; /* next unread byte in internal buf */ |
char rio_buf[RIO_BUFSIZE]; /* internal buffer */ |
} rio_t; |
/* $end rio_t */ |
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/* External variables */ |
extern int h_errno; /* defined by BIND for DNS errors */ |
extern char **environ; /* defined by libc */ |
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/* Misc constants */ |
#define MAXLINE 8192 /* max text line length */ |
#define MAXBUF 8192 /* max I/O buffer size */ |
#define LISTENQ 1024 /* second argument to listen() */ |
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/* Our own error-handling functions */ |
void unix_error(char *msg); |
void posix_error(int code, char *msg); |
void dns_error(char *msg); |
void app_error(char *msg); |
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/* Process control wrappers */ |
pid_t Fork(void); |
void Execve(const char *filename, char *const argv[], char *const envp[]); |
pid_t Wait(int *status); |
pid_t Waitpid(pid_t pid, int *iptr, int options); |
void Kill(pid_t pid, int signum); |
unsigned int Sleep(unsigned int secs); |
void Pause(void); |
unsigned int Alarm(unsigned int seconds); |
void Setpgid(pid_t pid, pid_t pgid); |
pid_t Getpgrp(); |
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/* Signal wrappers */ |
typedef void handler_t(int); |
handler_t *Signal(int signum, handler_t *handler); |
void Sigprocmask(int how, const sigset_t *set, sigset_t *oldset); |
void Sigemptyset(sigset_t *set); |
void Sigfillset(sigset_t *set); |
void Sigaddset(sigset_t *set, int signum); |
void Sigdelset(sigset_t *set, int signum); |
int Sigismember(const sigset_t *set, int signum); |
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/* Unix I/O wrappers */ |
int Open(const char *pathname, int flags, mode_t mode); |
ssize_t Read(int fd, void *buf, size_t count); |
ssize_t Write(int fd, const void *buf, size_t count); |
off_t Lseek(int fildes, off_t offset, int whence); |
void Close(int fd); |
int Select(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, |
struct timeval *timeout); |
int Dup2(int fd1, int fd2); |
void Stat(const char *filename, struct stat *buf); |
void Fstat(int fd, struct stat *buf) ; |
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/* Memory mapping wrappers */ |
void *Mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset); |
void Munmap(void *start, size_t length); |
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/* Standard I/O wrappers */ |
void Fclose(FILE *fp); |
FILE *Fdopen(int fd, const char *type); |
char *Fgets(char *ptr, int n, FILE *stream); |
FILE *Fopen(const char *filename, const char *mode); |
void Fputs(const char *ptr, FILE *stream); |
size_t Fread(void *ptr, size_t size, size_t nmemb, FILE *stream); |
void Fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream); |
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/* Dynamic storage allocation wrappers */ |
void *Malloc(size_t size); |
void *Realloc(void *ptr, size_t size); |
void *Calloc(size_t nmemb, size_t size); |
void Free(void *ptr); |
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/* Sockets interface wrappers */ |
int Socket(int domain, int type, int protocol); |
void Setsockopt(int s, int level, int optname, const void *optval, int optlen); |
void Bind(int sockfd, struct sockaddr *my_addr, int addrlen); |
void Listen(int s, int backlog); |
int Accept(int s, struct sockaddr *addr, socklen_t *addrlen); |
void Connect(int sockfd, struct sockaddr *serv_addr, int addrlen); |
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/* DNS wrappers */ |
struct hostent *Gethostbyname(const char *name); |
struct hostent *Gethostbyaddr(const char *addr, int len, int type); |
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/* Pthreads thread control wrappers */ |
void Pthread_create(pthread_t *tidp, pthread_attr_t *attrp, |
void * (*routine)(void *), void *argp); |
void Pthread_join(pthread_t tid, void **thread_return); |
void Pthread_cancel(pthread_t tid); |
void Pthread_detach(pthread_t tid); |
void Pthread_exit(void *retval); |
pthread_t Pthread_self(void); |
void Pthread_once(pthread_once_t *once_control, void (*init_function)()); |
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/* POSIX semaphore wrappers */ |
void Sem_init(sem_t *sem, int pshared, unsigned int value); |
void P(sem_t *sem); |
void V(sem_t *sem); |
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/* Rio (Robust I/O) package */ |
ssize_t rio_readn(int fd, void *usrbuf, size_t n); |
ssize_t rio_writen(int fd, void *usrbuf, size_t n); |
void rio_readinitb(rio_t *rp, int fd); |
ssize_t rio_readnb(rio_t *rp, void *usrbuf, size_t n); |
ssize_t rio_readlineb(rio_t *rp, void *usrbuf, size_t maxlen); |
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/* Wrappers for Rio package */ |
ssize_t Rio_readn(int fd, void *usrbuf, size_t n); |
void Rio_writen(int fd, void *usrbuf, size_t n); |
void Rio_readinitb(rio_t *rp, int fd); |
ssize_t Rio_readnb(rio_t *rp, void *usrbuf, size_t n); |
ssize_t Rio_readlineb(rio_t *rp, void *usrbuf, size_t maxlen); |
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/* Client/server helper functions */ |
int open_clientfd(char *hostname, int portno); |
int open_listenfd(int portno); |
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/* Wrappers for client/server helper functions */ |
int Open_clientfd(char *hostname, int port); |
int Open_listenfd(int port); |
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#endif /* __CSAPP_H__ */ |
/* $end csapp.h */ |