GETGROUPS

Section: Linux Programmer's Manual (2)
Updated: 10 December 1997
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getgroups, setgroups - ºÎ°¡ ±×·ì IDÀÇ ¸®½ºÆ® ¼ÒÀ¯/¼³Á¤  

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#include <unistd.h>

int getgroups(int size, gid_t list[]);

#define _BSD_SOURCE
#include <grp.h>

int setgroups(size_t size, const gid_t *list);  

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getgroups
Å©±â ¿¡ µû¶ó¼­ ºÎ°¡ ±×·ìÀº ¸®½ºÆ®. ·Î ¹ÝȯµÈ´Ù. ¸¸¾à Å©±â °¡ 0 ÀÌ¸é ¸®½ºÆ® ´Â º¯°æµÇÁö ¾Ê´Â´Ù. ÇÏÁö¸¸ ÇÁ·Î¼¼½º¸¦ À§ÇÑ ºÎ°¡ ±×·ìÀÇ ÃÑ ¼ö´Â ¹ÝȯµÈ´Ù.
setgroups
ÇÁ·Î¼¼½º¸¦ À§ÇØ ºÎ°¡ ±×·ìÀ» ¼³Á¤. ½´ÆÛ À¯Àú¸¸ ÀÌ ÇÔ¼ö¸¦ »ç¿ëÇÒ ¼ö ÀÖ´Ù.
 

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getgroups
¼º°ø½Ã, ºÎ°¡ ±×·ì ¾ÆÀ̵ðÀÇ ¼ö°¡ ¹ÝȯµÈ´Ù. ¿¡·¯½Ã¿¡´Â -1ÀÌ ¹ÝȯµÈ´Ù. errno ´Â Àû´çÈ÷ ¼³Á¤µÈ´Ù.
setgroups
¼º°ø½Ã, 0À» ¹ÝȯÇÑ´Ù. ¿¡·¯½Ã, -1 ÀÌ ¹ÝȯµÂ´Ï´Ù. ±×¸®°í errno ´Â Àû´çÈ÷ ¼³Á¤µÈ´Ù.
 

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EFAULT
list °¡ ½ÇÁ¦ ¾ø´Â ÁÖ¼Ò¸¦ °¡Áö°í ÀÖ´Ù.
EPERM
setgroups, ¿¡°Ô »ç¿ëÀÚ°¡ ½´ÆÛÀ¯Àú°¡ ¾Æ´Ï´Ù.
EINVAL
setgroups, ¿¡°Ô Å©±â °¡ NGROUPS (32 for Linux 2.0.32)º¸´Ù Å©´Ù.. getgroups, ¿¡°Ô Å©±â °¡ ºÎ°¡ ±×·ì ¾Æµð ¼öº¸´Ù ÀÛÁö¸¸ 0Àº ¾Æ´Ï´Ù.
 

ȣȯ

SVr4, SVID (issue 4 only; ÀÌ È£ÃâÀº SVr3¿¡ ¾ø´Ù), X/OPEN, 4.3BSD. The getgroups ÇÔ¼ö´Â POSIX.1¾È¿¡ ÀÖ´Ù. setgroups ´Â Ư±ÇÀÌ ÇÊ¿äÇϱ⠶§¹®¿¡, POSIX.1·Î Áö¿øµÇÁö ¾Ê´Â´Ù.  

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The _BSD_SOURCE Ç÷¡±×´Â ¾Æ¸¶µµ setgroups ¿¡°Ô ÇÊ¿äÇÏÁö ¾ÊÀ» °ÍÀÌ´Ù.  

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initgroups(3), getgid(2), setgid(2)  

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ASPLINUX<man@asp-linux.co.kr>, 2000³â 7¿ù 26ÀÏ


 

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