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setaliasent

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setaliasent, endaliasent, getaliasent, getaliasent_r, getaliasbyname, getaliasbyname_r - ¥¨¥¤¥ê¥¢¥¹¥¨¥ó¥È¥ê¤òÆɤ߹þ¤à

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#include <aliases.h>

void setaliasent(void);

void endaliasent(void);

struct aliasent *getaliasent(void);

int getaliasent_r(struct aliasent *result,
char *buffer, size_t buflen, struct aliasent **res);

struct aliasent *getaliasbyname(const char *name);

int getaliasbyname_r(const char *name, struct aliasent *result,
char *buffer, size_t buflen, struct aliasent **res);

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getaliasent() ´Ø¿ô¤Ï¥¨¥¤¥ê¥¢¥¹¥Ç¡¼¥¿¥Ù¡¼¥¹¤«¤é¼è¤ê½Ð¤·¤¿ ¥°¥ë¡¼¥×¾ðÊó¤ò´Þ¤à¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¤òÊÖ¤¹¡£ 1 ²óÌܤ˴ؿô¤¬¸Æ¤Ð¤ì¤¿¤È¤­¤Ë¤Ï¡¢ºÇ½é¤Î¥¨¥ó¥È¥ê¤òÊÖ¤¹; ¤½¤ì°Ê¹ß¤Ï¤½¤Î¸å¤Î¥¨¥ó¥È¥ê¤òÊÖ¤¹¡£

setaliasent() ´Ø¿ô¤Ï¥Õ¥¡¥¤¥ë¥Ý¥¤¥ó¥¿¤ò¥¨¥¤¥ê¥¢¥¹¥Ç¡¼¥¿¥Ù¡¼¥¹¤ÎÀèƬ¤Ë´¬¤­Ì᤹¡£

endaliasent() ´Ø¿ô¤Ï¥¨¥¤¥ê¥¢¥¹¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò¥¯¥í¡¼¥º¤¹¤ë¡£

getaliasent_r() ´Ø¿ô¤Ï¾åµ­¤Î´Ø¿ô¤Î¥ê¥¨¥ó¥È¥é¥ó¥ÈÈǤǤ¢¤ë¡£ Í׵ᤵ¤ì¤¿¹½Â¤ÂΤÏÂè 1 °ú¤­¿ô¤Ë³ÊǼ¤µ¤ì¤ë¤¬¡¢ ¥×¥í¥°¥é¥Þ¤Ï¾¤Î°ú¤­¿ô¤âËä¤á¤Æ¤ä¤ëɬÍפ¬¤¢¤ë¡£ ½¼Ê¬¤ÊÎΰ褬Ϳ¤¨¤é¤ì¤Ê¤¤¤È¡¢¤³¤Î´Ø¿ô¤Ï¼ºÇÔ¤¹¤ë¡£

´Ø¿ô getaliasbyname() ¤Ï name °ú¤­¿ô¤ò¤È¤ê¡¢¥¨¥¤¥ê¥¢¥¹¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò¸¡º÷¤¹¤ë¡£ ¥¨¥ó¥È¥ê¤Ï struct aliasent ¤Ø¤Î¥Ý¥¤¥ó¥¿¤È¤·¤ÆÊÖ¤µ¤ì¤ë¡£

getaliasbyname_r() ¤Ï¾åµ­¤Î´Ø¿ô¤Î¥ê¥¨¥ó¥È¥é¥ó¥ÈÈǤǤ¢¤ë¡£ Í׵ᤵ¤ì¤¿¹½Â¤ÂΤÏÂè 2 °ú¤­¿ô¤Ë³ÊǼ¤µ¤ì¤ë¤¬¡¢ ¥×¥í¥°¥é¥Þ¤Ï¾¤Î°ú¤­¿ô¤âËä¤á¤Æ¤ä¤ëɬÍפ¬¤¢¤ë¡£ ½¼Ê¬¤ÊÎΰ褬Ϳ¤¨¤é¤ì¤Ê¤¤¤È¡¢¤³¤Î´Ø¿ô¤Ï¼ºÇÔ¤¹¤ë¡£

struct aliasent ¤Ï <aliases.h> ¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ë¡£

struct aliasent {

    char    *alias_name;              /* ¥¨¥¤¥ê¥¢¥¹Ì¾ */

    size_t   alias_members_len;

    char   **alias_members;          /* ¥¨¥¤¥ê¥¢¥¹Ì¾¤Î¥ê¥¹¥È */

    int      alias_local;

};

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´Ø¿ô getaliasent_r() ¤È getaliasbyname_r() ¤Ï¡¢¥¨¥é¡¼¤Î¾ì¹ç¤Ë 0 °Ê³°¤ÎÃͤòÊÖ¤¹¡£

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¥Ç¥Õ¥©¥ë¥È¤Î¥¨¥¤¥ê¥¢¥¹¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ï¡¢¥Õ¥¡¥¤¥ë /etc/aliases ¤Ç¤¢¤ë¡£ ¤³¤ì¤Ï /etc/nsswitch.conf ¥Õ¥¡¥¤¥ë¤ÇÊѹ¹¤Ç¤­¤ë¡£

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¤³¤Î¥ë¡¼¥Á¥ó¤Ï glibc ¸ÇÍ­¤Î¤â¤Î¤Ç¤¢¤ë¡£ NeXT ¤Ë¤ÏƱÍͤΥ롼¥Á¥ó¤¬¤¢¤ë¡£

#include <aliasdb.h>

void alias_setent(void);

void alias_endent(void);

alias_ent *alias_getent(void);

alias_ent *alias_getbyname(char *name);

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°Ê²¼¤ÎÎã¤Ï gcc example.c -o example ¤Ç¥³¥ó¥Ñ¥¤¥ë¤Ç¤­¤ë¡£ ¤³¤ì¤Ï¥¨¥¤¥ê¥¢¥¹¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ë¤¢¤ëÁ´¤Æ¤Î̾Á°¤ò¥À¥ó¥×¤¹¤ë¡£

#include <aliases.h>

#include <stdio.h>

#include <stdlib.h>

#include <errno.h>



int

main(void)

{

    struct aliasent *al;

    setaliasent();

    for (;;) {

        al = getaliasent();

        if (al == NULL)

            break;

        printf("Name: %s\n", al->alias_name);

    }

    if (errno) {

        perror("reading alias");

        exit(EXIT_FAILURE);

    }

    endaliasent();

    exit(EXIT_SUCCESS);

´ØÏ¢¹àÌÜ

getgrent(3), getpwent(3), getspent(3), aliases(5)