GETGRNAM

Section: Linux Programmer's Manual (3 )
Updated: 1993-04-04
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NAME

getgrnam, getgrgid - get group file entry

SYNOPSIS

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

struct group *getgrnam(const char *name);

struct group *getgrgid(gid_t gid);

DESCRIPTION

The getgrnam() function returns a pointer to a structure containing the group information from /etc/group for the entry that matches the group name name.

The getgrgid() function returns a pointer to a structure containing the group information from /etc/group for the entry that matches the group gid gid.

The group structure is defined in <grp.h> as follows:


struct group {
        char    *gr_name;        /* group name */
        char    *gr_passwd;      /* group password */
        gid_t   gr_gid;          /* group id */
        char    **gr_mem;        /* group members */
};

RETURN VALUE

The getgrnam() and getgrgid() functions return the group information structure, or NULL if the matching entry is not found or an error occurs.

ERRORS

ENOMEM: Insufficient memory to allocate group information structure.

FILES

/etc/group: Group database file

CONFORMING TO

SVID 3, POSIX, BSD 4.3

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