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- /*
- * csapp.h - prototypes and definitions for the CS:APP3e book
- */
- /* $begin csapp.h */
- #ifndef __CSAPP_H__
- #define __CSAPP_H__
- #include <stdio.h>
- #include <stdlib.h>
- #include <stdarg.h>
- #include <unistd.h>
- #include <string.h>
- #include <ctype.h>
- #include <setjmp.h>
- #include <signal.h>
- #include <dirent.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>
- /* 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 */
- /* Simplifies calls to bind(), connect(), and accept() */
- /* $begin sockaddrdef */
- typedef struct sockaddr SA;
- /* $end sockaddrdef */
- /* 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 */
- /* External variables */
- extern int h_errno; /* Defined by BIND for DNS errors */
- extern char **environ; /* Defined by libc */
- /* Misc constants */
- #define MAXLINE 8192 /* Max text line length */
- #define MAXBUF 8192 /* Max I/O buffer size */
- #define LISTENQ 1024 /* Second argument to listen() */
- /* Our own error-handling functions */
- void unix_error(char *msg);
- void posix_error(int code, char *msg);
- void dns_error(char *msg);
- void gai_error(int code, char *msg);
- void app_error(char *msg);
- /* 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();
- /* 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);
- int Sigsuspend(const sigset_t *set);
- /* Sio (Signal-safe I/O) routines */
- ssize_t sio_puts(char s[]);
- ssize_t sio_putl(long v);
- void sio_error(char s[]);
- /* Sio wrappers */
- ssize_t Sio_puts(char s[]);
- ssize_t Sio_putl(long v);
- void Sio_error(char s[]);
- /* 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) ;
- /* Directory wrappers */
- DIR *Opendir(const char *name);
- struct dirent *Readdir(DIR *dirp);
- int Closedir(DIR *dirp);
- /* 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);
- /* 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);
- /* 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);
- /* 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);
- /* Protocol independent wrappers */
- void Getaddrinfo(const char *node, const char *service,
- const struct addrinfo *hints, struct addrinfo **res);
- void Getnameinfo(const struct sockaddr *sa, socklen_t salen, char *host,
- size_t hostlen, char *serv, size_t servlen, int flags);
- void Freeaddrinfo(struct addrinfo *res);
- void Inet_ntop(int af, const void *src, char *dst, socklen_t size);
- void Inet_pton(int af, const char *src, void *dst);
- /* DNS wrappers */
- struct hostent *Gethostbyname(const char *name);
- struct hostent *Gethostbyaddr(const char *addr, int len, int type);
- /* 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)());
- /* POSIX semaphore wrappers */
- void Sem_init(sem_t *sem, int pshared, unsigned int value);
- void P(sem_t *sem);
- void V(sem_t *sem);
- /* 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);
- /* 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);
- /* Reentrant protocol-independent client/server helpers */
- int open_clientfd(char *hostname, char *port);
- int open_listenfd(char *port);
- /* Wrappers for reentrant protocol-independent client/server helpers */
- int Open_clientfd(char *hostname, char *port);
- int Open_listenfd(char *port);
- #endif /* __CSAPP_H__ */
- /* $end csapp.h */
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