getgrnam, getgrgid - get group file entry
#include <grp.h>
#include <sys/types.h>
struct group *getgrnam(const char *name);
struct group *getgrgid(gid_t gid);
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 */
};
The getgrnam() and getgrgid() functions return the group information
structure, or NULL if the matching entry is not found or an error
occurs.
ENOMEM Insufficient memory to allocate group information structure.
/etc/group
Group database file
SVID 3, POSIX, BSD 4.3
fgetgrent(3), getgrent(3), setgrent(3), endgrent(3)
GNU 1993-04-04 GETGRNAM(3)
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