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GETGRENT

Section: Linux Programmer's Manual (3)
Updated: April 4, 1993
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getgrent, setgrent, endgrent - ¥°¥ë¡¼¥×¥Õ¥¡¥¤¥ë¥¨¥ó¥È¥ê¤Î¼è¤ê½Ð¤·

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#include <grp.h>
#include <sys/types.h>

struct group *getgrent(void);

void setgrent(void);

void endgrent(void);

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getgrent() ´Ø¿ô¤Ï¡¢/etc/group ¤«¤é¼è¤ê½Ð¤·¤¿¥°¥ë¡¼¥×¾ðÊó ¤ò´Þ¤à¹½Â¤ÂÎ¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£ºÇ½é¤Ë¸Æ¤Ó½Ð¤µ¤ì¤¿»þ¤Ï ºÇ½é¤Î¥¨¥ó¥È¥ê¤òÊÖ¤·¡¢¤½¤ì°Ê¹ß¤Ï¡¢¼¡¤Î¥¨¥ó¥È¥ê¤òÊÖ¤¹¡£

setgrent() ´Ø¿ô¤Ï¡¢¥Õ¥¡¥¤¥ë¥Ý¥¤¥ó¥¿¤ò /etc/group ¥Õ¥¡¥¤¥ë¤Î ÀèÆ¬¤Ø´¬¤Ìá¤¹¡£

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

group ¹½Â¤ÂÎ¤Ï¡¢<grp.h> ¤Ç°Ê²¼¤Î¤è¤¦¤ËÄêµÁ¤µ¤ì¤Æ¤¤¤ë:


struct group {
        char    *gr_name;        /* ¥°¥ë¡¼¥×Ì¾ */
        char    *gr_passwd;      /* ¥°¥ë¡¼¥×¤Î¥Ñ¥¹¥ï¡¼¥É */
        gid_t   gr_gid;          /* ¥°¥ë¡¼¥× ID */
        char    **gr_mem;        /* ¥°¥ë¡¼¥×¤Î¥á¥ó¥Ð */
};

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getgrent() ´Ø¿ô¤Ï¥°¥ë¡¼¥×¾ðÊó¹½Â¤ÂÎ¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£ ¤³¤ì°Ê¾å¥¨¥ó¥È¥ê¤¬Ìµ¤¤¤«¡¢¥¨¥é¡¼¤¬È¯À¸¤·¤¿¾ì¹ç¤Ï NULL ¤òÊÖ¤¹¡£

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ENOMEM: ¥°¥ë¡¼¥×¾ðÊó¹½Â¤ÂÎ¤ò³ä¤êÅö¤Æ¤ë¤¿¤á¤Î¥á¥â¥ê¤¬ÉÔ½½Ê¬¡£

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/etc/group: ¥°¥ë¡¼¥×¥Ç¡¼¥¿¥Ù¡¼¥¹¥Õ¥¡¥¤¥ë

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SVID 3, BSD 4.3

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fgetgrent(3), getgrnam(3), getgrgid(3)

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