《UNIX环境高级编程(第2版)》的问题
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《UNIX环境高级编程(第2版)》的问题
小弟在看这本书,书中的例子都用到了一个头文件,apue.h。我已按照附录将这个文件敲进去了,并且仔仔细细核对了三遍。确信已经没有错误了。但编译范例程序的时候,还是提示错误。我将所有的信息列出来了,请大家帮帮忙。
小弟先谢谢了!
/* apue.h */
/* Our own header, to be included before all standard system headers */
#ifndef _APUE_H
#define _APUE_H
#define _XOPEN_SOURCE 600 /* Single UNIX Specification, Version 3 */
#include <sys/types.h> /* some systems still require this */
#include <sys/stat.h>
#include <sys/termios.h> /* for winsize */
#ifndef TIOCGWINSZ
#include <sys/ioctl.h>
#endif
#include <stdio.h> /* for convenience */
#include <stdlib.h> /* for convenience */
#include <stddef.h> /* for offsetof */
#include <string.h> /* for convenience */
#include <unistd.h> /* for convenience */
#include <signal.h> /* for SIG_ERR */
#define MAXLINE 4096 /* max line length */
/*
* Default file access permissions for new files.
*/
#define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
/*
* Default permissions for new directories.
*/
#define DIR_MODE (FILE_MODE | S_IXUSR | S_IXGRP | S_IXOTH)
typedef void Sigfunc(int); /* for signal handlers */
#if defined(SIG_IGN) && !defined(SIG_ERR)
#define SIG_ERR ((Sigfunc *)-1)
#endif
#define min(a,b) ((a) < (b) ? (a) : (b))
#define max(a,b) ((a) > (b) ? (a) : (b))
/*
* Prototypes for our own functions.
*/
char *path_alloc(int *);
long open_max(void);
void clr_fl(int, int);
void set_fl(int, int);
void pr_exit(int);
void pr_mask(const char *);
Sigfunc *signal_intr(int, Sigfunc *);
int tty_cbreak(int);
int tty_raw(int);
int tty_reset(int);
void tty_atexit(void);
#ifdef ECHO /* only if <termios.h> has been included */
struct termios *tty_termios(void);
#endif
void sleep_us(unsigned int);
ssize_t readn(int, void *, size_t);
ssize_t writen(int, const void *, size_t);
void daemonize(const char *);
int s_pipe(int *);
int recv_fd(int, ssize_t (*func)(int, const void *, size_t));
int send_fd(int, int);
int send_err(int, int,const char *);
int serv_listen(const char *);
int serv_accept(int, uid_t *);
int cli_conn(const char *);
int buf_args(char *, int (*func)(int, char **));
int ptym_open(char *, int);
int ptys_open(char *);
#ifdef TIOCGWINSZ
pid_t pty_fork(int *, char *, int, const struct termios *,
const struct winsize *);
#endif
int lock_reg(int, int, int, off_t, int, off_t );
#define read_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLK, F_RDLCK, (offset), (whence), (len))
#define readw_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLKW, F_RDLCK, (offset), (whence), (len))
#define write_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLK, F_WRLCK, (offset), (whence), (len))
#define writew_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLKW, F_WRLCK, (offset), (whence), (len))
#define un_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLK, F_UNLCK, (offset), (whence), (len))
pid_t lock_test(int, int, off_t, int, off_t);
#define is_read_lockable(fd, offset, whence, len) \
(lock_test((fd), F_RDLCK, (offset),(whence), (len)) == 0)
#define is_write_lockable(fd, offset, whence, len) \
(lock_test((fd), F_WRLCK, (offset),(whence), (len)) == 0)
void err_dump(const char *, ...);
void err_msg(const char *, ...);
void err_quit(const char *, ...);
void err_exit(int, const char *, ...);
void err_ret(const char *, ...);
void err_sys(const char *, ...);
void log_msg(const char *, ...);
void log_open(const char *, int, int);
void log_quit(const char *, ...);
void log_ret(const char *, ...);
void log_sys(const char *, ...);
void TELL_WAIT(void);
void TELL_PARENT(pid_t);
void TELL_CHILD(pid_t);
void WAIT_PARENT(void);
void WAIT_CHILD(void);
#endif /* _APUE_H */
程序文件 myls.c
#include "apue.h"
#include <dirent.h>
int main(int argc, char* argv[])
{
DIR *dp;
struct dirent *dirp;
if (argc != 2)
err_quit("usage: ls directory_name");
if ((dp = opendir(argv[1])) == NULL)
err_sys("can't open %s", argv[1]);
while ((dirp = readdir(dp)) != NULL)
printf("%s\n", dirp->d_name);
closedir(dp);
exit(0);
}
出错信息:
casm@casm-ubuntu:~$ cc myls.c
/tmp/ccOSWAqX.o: In function `main':myls.c:(.text+0x2a):对‘err_quit’未定义的引 用
:test.c:(.text+0x5b):对‘err_sys’未定义的引用
collect2: ld 返回 1
小弟先谢谢了!
/* apue.h */
/* Our own header, to be included before all standard system headers */
#ifndef _APUE_H
#define _APUE_H
#define _XOPEN_SOURCE 600 /* Single UNIX Specification, Version 3 */
#include <sys/types.h> /* some systems still require this */
#include <sys/stat.h>
#include <sys/termios.h> /* for winsize */
#ifndef TIOCGWINSZ
#include <sys/ioctl.h>
#endif
#include <stdio.h> /* for convenience */
#include <stdlib.h> /* for convenience */
#include <stddef.h> /* for offsetof */
#include <string.h> /* for convenience */
#include <unistd.h> /* for convenience */
#include <signal.h> /* for SIG_ERR */
#define MAXLINE 4096 /* max line length */
/*
* Default file access permissions for new files.
*/
#define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
/*
* Default permissions for new directories.
*/
#define DIR_MODE (FILE_MODE | S_IXUSR | S_IXGRP | S_IXOTH)
typedef void Sigfunc(int); /* for signal handlers */
#if defined(SIG_IGN) && !defined(SIG_ERR)
#define SIG_ERR ((Sigfunc *)-1)
#endif
#define min(a,b) ((a) < (b) ? (a) : (b))
#define max(a,b) ((a) > (b) ? (a) : (b))
/*
* Prototypes for our own functions.
*/
char *path_alloc(int *);
long open_max(void);
void clr_fl(int, int);
void set_fl(int, int);
void pr_exit(int);
void pr_mask(const char *);
Sigfunc *signal_intr(int, Sigfunc *);
int tty_cbreak(int);
int tty_raw(int);
int tty_reset(int);
void tty_atexit(void);
#ifdef ECHO /* only if <termios.h> has been included */
struct termios *tty_termios(void);
#endif
void sleep_us(unsigned int);
ssize_t readn(int, void *, size_t);
ssize_t writen(int, const void *, size_t);
void daemonize(const char *);
int s_pipe(int *);
int recv_fd(int, ssize_t (*func)(int, const void *, size_t));
int send_fd(int, int);
int send_err(int, int,const char *);
int serv_listen(const char *);
int serv_accept(int, uid_t *);
int cli_conn(const char *);
int buf_args(char *, int (*func)(int, char **));
int ptym_open(char *, int);
int ptys_open(char *);
#ifdef TIOCGWINSZ
pid_t pty_fork(int *, char *, int, const struct termios *,
const struct winsize *);
#endif
int lock_reg(int, int, int, off_t, int, off_t );
#define read_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLK, F_RDLCK, (offset), (whence), (len))
#define readw_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLKW, F_RDLCK, (offset), (whence), (len))
#define write_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLK, F_WRLCK, (offset), (whence), (len))
#define writew_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLKW, F_WRLCK, (offset), (whence), (len))
#define un_lock(fd, offset, whence, len) \
lock_reg((fd), F_SETLK, F_UNLCK, (offset), (whence), (len))
pid_t lock_test(int, int, off_t, int, off_t);
#define is_read_lockable(fd, offset, whence, len) \
(lock_test((fd), F_RDLCK, (offset),(whence), (len)) == 0)
#define is_write_lockable(fd, offset, whence, len) \
(lock_test((fd), F_WRLCK, (offset),(whence), (len)) == 0)
void err_dump(const char *, ...);
void err_msg(const char *, ...);
void err_quit(const char *, ...);
void err_exit(int, const char *, ...);
void err_ret(const char *, ...);
void err_sys(const char *, ...);
void log_msg(const char *, ...);
void log_open(const char *, int, int);
void log_quit(const char *, ...);
void log_ret(const char *, ...);
void log_sys(const char *, ...);
void TELL_WAIT(void);
void TELL_PARENT(pid_t);
void TELL_CHILD(pid_t);
void WAIT_PARENT(void);
void WAIT_CHILD(void);
#endif /* _APUE_H */
程序文件 myls.c
#include "apue.h"
#include <dirent.h>
int main(int argc, char* argv[])
{
DIR *dp;
struct dirent *dirp;
if (argc != 2)
err_quit("usage: ls directory_name");
if ((dp = opendir(argv[1])) == NULL)
err_sys("can't open %s", argv[1]);
while ((dirp = readdir(dp)) != NULL)
printf("%s\n", dirp->d_name);
closedir(dp);
exit(0);
}
出错信息:
casm@casm-ubuntu:~$ cc myls.c
/tmp/ccOSWAqX.o: In function `main':myls.c:(.text+0x2a):对‘err_quit’未定义的引 用
:test.c:(.text+0x5b):对‘err_sys’未定义的引用
collect2: ld 返回 1
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把附录B上的代码复制粘贴到相应的c文件
把附录B上的代码复制粘贴到相应的C文件,如非daemon用的放到apue_err.c中,daemon用的放到apue_log.c中,然后在编译文件时用
cc apue_err.c yoursource.c
或
cc apue_log.c yoursource.c
即可
cc apue_err.c yoursource.c
或
cc apue_log.c yoursource.c
即可
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Re: 《UNIX环境高级编程(第2版)》的问题
谁知道open_max()的实现。。。
知道的朋友,通知一下, 谢谢 。
知道的朋友,通知一下, 谢谢 。