opend.h

unix环境高级编程的源代码

#include    <sys/types.h>
#include    <errno.h>
#include    "ourhdr.h"

#define    CS_OPEN "/home/stevens/opend" /* well-known name */
#define    CL_OPEN "open"                  /* client's request for server */

            /* declare global variables */
extern int     debug;        /* nonzero if interactive (not daemon) */
extern char     errmsg[];    /* error message string to return to client */
extern int     oflag;        /* open flag: O_xxx ... */
extern char    *pathname;    /* of file to open for client */

typedef struct {    /* one Client struct per connected client */
  int    fd;        /* fd, or -1 if available */
  uid_t    uid;
} Client;

extern Client    *client;        /* ptr to malloc'ed array */
extern int         client_size;    /* # entries in client[] array */
                    /* (both manipulated by client_XXX() functions) */

            /* function prototypes */
int         cli_args(int, char **);
int         client_add(int, uid_t);
void     client_del(int);
void     loop(void);
void     request(char *, int, int, uid_t);