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getservent

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getservent, getservbyname, getservbyport, setservent, endservent - ¥µ¡¼¥Ó¥¹¤Î¥¨¥ó¥È¥ê¤ò¼èÆÀ¤¹¤ë

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#include <netdb.h>



struct servent *getservent(void);



struct servent *getservbyname(const char *name, const char *proto);



struct servent *getservbyport(int port, const char *proto);



void setservent(int stayopen);



void endservent(void);

ÀâÌÀ

getservent() ´Ø¿ô¤Ï¡¢ ¥Õ¥¡¥¤¥ë /etc/services ¤Î¼¡¤Î¹Ô¤ò°ì¹ÔÆɤ߹þ¤ß¡¢ ¥Õ¥£¡¼¥ë¥É¤Ëʬ³ä¤·¤¿ÆâÍƤò¼ý¤á¤¿¹½Â¤ÂÎ servent ¤òÊÖ¤¹¡£ ¥Õ¥¡¥¤¥ë /etc/services ¤ÏɬÍפ˱þ¤¸¤Æ¥ª¡¼¥×¥ó¤µ¤ì¤ë¡£

getservbyname() ´Ø¿ô¤Ï¡¢ ¥×¥í¥È¥³¥ë proto ¤òÍѤ¤¤ë¥µ¡¼¥Ó¥¹¤Î̾Á° name ¤Ë¥Þ¥Ã¥Á¤¹¤ë¹Ô¤ò /etc/services ¤«¤éõ¤·¡¢ ¤½¤Î¹Ô¤ÎÆâÍƤò¼ý¤á¤¿ servent ¹½Â¤ÂΤòÊÖ¤¹¡£ proto ¤¬ NULL ¤Î¾ì¹ç¤Ï¤É¤Î¥×¥í¥È¥³¥ë¤Ë¤â¥Þ¥Ã¥Á¤·¤Ê¤¤¡£

getservbyport() ´Ø¿ô¤Ï¡¢ ¥×¥í¥È¥³¥ë proto ¤òÍѤ¤¤ë¥µ¡¼¥Ó¥¹¤Î¥Ý¡¼¥ÈÈÖ¹æ port (¥Í¥Ã¥È¥ï¡¼¥¯¥Ð¥¤¥È¥ª¡¼¥À¡¼¤ÇÍ¿¤¨¤ë) ¤Ë¥Þ¥Ã¥Á¤¹¤ë¹Ô¤ò /etc/services ¤«¤éõ¤·¡¢ ¤½¤Î¹Ô¤ÎÆâÍƤò¼ý¤á¤¿ protoent ¹½Â¤ÂΤòÊÖ¤¹¡£ proto ¤¬ NULL ¤Î¾ì¹ç¤Ï¤É¤Î¥×¥í¥È¥³¥ë¤Ë¤â¥Þ¥Ã¥Á¤·¤Ê¤¤¡£

setservent() ´Ø¿ô¤Ï /etc/services ¥Õ¥¡¥¤¥ë¤ò¥ª¡¼¥×¥ó¤·¤Æ¡¢ ¥Õ¥¡¥¤¥ë¥Ý¥¤¥ó¥¿¤òÀèƬ¤Ë°ÜÆ°¤¹¤ë¡£ stayopen ¤¬¿¿ (1) ¤Î¾ì¹ç¤Ë¤Ï¡¢ getservbyname() ¤ä getservbyport() ´Ø¿ô¤Î¸Æ¤Ó½Ð¤·¤Î´Ö¤Ë¥Õ¥¡¥¤¥ë¤Ï¥¯¥í¡¼¥º¤µ¤ì¤Ê¤¤¡£

endservent() ´Ø¿ô¤Ï /etc/services ¥Õ¥¡¥¤¥ë¤ò¥¯¥í¡¼¥º¤¹¤ë¡£

servent ¹½Â¤ÂÎ¤Ï <netdb.h> ¤Ç°Ê²¼¤Î¤è¤¦¤ËÄêµÁ¤µ¤ì¤Æ¤¤¤ë¡£

struct servent {

    char  *s_name;       /* official service name */

    char **s_aliases;    /* alias list */

    int    s_port;       /* port number */

    char  *s_proto;      /* protocol to use */

}

servent ¹½Â¤ÂΤΥá¥ó¥Ð¡¼¤Ï°Ê²¼¤ÎÄ̤ꡣ

s_name

¥µ¡¼¥Ó¥¹¤ÎÀµ¼°Ì¾ (official name)¡£

s_aliases

¥µ¡¼¥Ó¥¹¤ÎÊÌ̾¤Î¥ê¥¹¥È¡£0 ¤Ç½ªÃ¼¤¹¤ë¡£

s_port

¥µ¡¼¥Ó¥¹¤Î¥Ý¡¼¥ÈÈֹ档¥Í¥Ã¥È¥ï¡¼¥¯¥Ð¥¤¥È¥ª¡¼¥À¡¼¤ÇÍ¿¤¨¤é¤ì¤ë¡£

s_proto

¤³¤Î¥µ¡¼¥Ó¥¹¤È¶¦¤ËÍѤ¤¤ë¥×¥í¥È¥³¥ë¤Î̾Á°¡£

ÊÖ¤êÃÍ

getservent(), getservbyname(), getservbyport() ´Ø¿ô¤Ï servent ¹½Â¤ÂΤòÊÖ¤¹¡£ ¥¨¥é¡¼¤¬µ¯¤³¤Ã¤¿¤ê¡¢¥Õ¥¡¥¤¥ë¤ÎËöÈø¤Ë㤷¤¿¾ì¹ç¤Ï NULL ¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£

¥Õ¥¡¥¤¥ë

/etc/services

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4.3BSD, POSIX.1-2001.

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getnetent(3), getprotoent(3), services(5)