Linux Certif

Toute la documentation sur la certification Linux LPI

initgroups

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#include <sys/types.h>

#include <grp.h>



int initgroups(const char *user, gid_t group);

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initgroups() ´Ø¿ô¤Ï¥°¥ë¡¼¥×¥Ç¡¼¥¿¥Ù¡¼¥¹ /etc/group ¤òÆÉ¤ß ¹þ¤ó¤Ç¡¢user ¤¬½ê°¤·¤Æ¤¤¤ëÁ´¤Æ¤Î¥°¥ë¡¼¥×¤ò»È¤Ã¤Æ¡¢¥°¥ë¡¼¥×¥¢¥¯ ¥»¥¹¥ê¥¹¥È¤ò½é´ü²½¤¹¤ë¡£¤µ¤é¤Ë¡¢group ¤Ë¼¨¤µ¤ì¤ë¥°¥ë¡¼¥×¤â¥°¥ë¡¼ ¥×¥¢¥¯¥»¥¹¥ê¥¹¥È¤ËÄɲ䵤ì¤ë¡£

user °ú¿ô¤Ï NULL ¤Ç¤¢¤Ã¤Æ¤Ï¤Ê¤é¤Ê¤¤¡£

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initgroups() ´Ø¿ô¤Ï¡¢À®¸ù¤¹¤ë¤È 0 ¤òÊÖ¤¹¡£ ¥¨¥é¡¼¤Î¾ì¹ç¤Ï -1 ¤òÊÖ¤·¡¢ errno ¤òŬÀÚ¤ËÀßÄꤹ¤ë¡£

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

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SVr4, 4.3BSD

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initgroups() ¤Î¥×¥í¥È¥¿¥¤¥×Àë¸À¤Ï¡¢ _BSD_SOURCE ¤¬ÄêµÁ¤µ¤ì¤Æ¤¤¤ë¤È¤­¤Ë¤Î¤ßÍ­¸ú¤È¤Ê¤ë¡£

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getgroups(2), setgroups(2)