lprps.h

unix环境高级编程的源代码

#include    <sys/types.h>
#include    <sys/time.h>
#include    <errno.h>
#include    <signal.h>
#include    <syslog.h>        /* since we're a daemon */
#include    "ourhdr.h"

#define    EXIT_SUCCESS    0    /* defined by BSD spooling system */
#define    EXIT_REPRINT    1
#define    EXIT_THROW_AWAY    2

#define    DEF_DEVICE    "/dev/ttyb"    /* defaults for debug mode */
#define    DEF_BAUD    B19200

                            /* modify following as appropriate */
#define    MAILCMD        "mail -s \"printer job\" %s@%s < %s"

#define    OBSIZE    1024    /* output buffer */
#define    IBSIZE    1024    /* input buffer */
#define    MBSIZE    1024    /* message buffer */

                /* declare global variables */
extern char    *loginname;
extern char    *hostname;
extern char    *acct_file;
extern char     eofc;        /* PS end-of-file (004) */
extern int     debug;        /* true if interactive (not a daemon) */
extern int     in_job;    /* true if sending user's PS job to printer */
extern int     psfd;        /* file descriptor for PostScript printer */
extern int     start_page;/* starting page# */
extern int     end_page;    /* ending page# */
extern volatile sig_atomic_t    intr_flag; /* set if SIGINT is caught */
extern volatile sig_atomic_t    alrm_flag; /* set if SIGALRM goes off */

extern enum status {    /* printer status */
    INVALID, UNKNOWN, IDLE, BUSY, WAITING
} status;

                /* global function prototypes */
void    do_acct(void);                /* acct.c */

void    clear_alrm(void);            /* alarm.c */
void    handle_alrm(void);
void    set_alrm(unsigned int);

void    get_status(void);            /* getstatus.c */

void    init_input(int);            /* input.c */
void    proc_input_char(int);
void    proc_some_input(void);
void    proc_upto_eof(int);

void    clear_intr(void);            /* interrupt.c */
void    handle_intr(void);
void    set_intr(void);

void    close_mailfp(void);            /* mail.c */
void    mail_char(int);
void    mail_line(const char *, const char *);

void    msg_init(void);                /* message.c */
void    msg_char(int);
void    proc_msg(void);

void    out_char(int);                /* output.c */

void    get_page(int *);            /* pagecount.c */

void    send_file(void);            /* sendfile.c */

void    block_write(const char *, int);    /* tty.c */
void    tty_flush(void);
void    set_block(void);
void    set_nonblock(void);
void    tty_open(void);