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shichao-an/apue_getgroups.h

Last active August 29, 2015 14:22
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apue_getgroups.h
#include <unistd.h>
int getgroups(int gidsetsize, gid_t grouplist[]);
/* Returns: number of supplementary group IDs if OK, −1 on error */
#include <grp.h> /* on Linux */
#include <unistd.h> /* on FreeBSD, Mac OS X, and Solaris */
int setgroups(int ngroups, const gid_t grouplist[]);
#include <grp.h> /* on Linux and Solaris */
#include <unistd.h> /* on FreeBSD and Mac OS X */
int initgroups(const char *username, gid_t basegid);
/* Both return: 0 if OK, −1 on error */
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