GNU/Linux |
CentOS 4.8 |
i386 |
getpwent(3) |
getpwent, setpwent, endpwent − get password file entry
#include
<sys/types.h>
#include <pwd.h>
struct passwd *getpwent(void);
void setpwent(void);
void endpwent(void);
The getpwent() function returns a pointer to a structure containing the broken out fields of a line from /etc/passwd. The first time it is called it returns the first entry; thereafter, it returns successive entries.
The setpwent() function rewinds the file pointer to the beginning of the /etc/passwd file.
The endpwent() function closes the /etc/passwd file.
The passwd structure is defined in <pwd.h> as follows:
struct passwd {
char *pw_name; /* user name */
char *pw_passwd; /* user password */
uid_t pw_uid; /* user id */
gid_t pw_gid; /* group id */
char *pw_gecos; /* real name */
char *pw_dir; /* home directory */
char *pw_shell; /* shell program */
};
The getpwent() function returns the passwd structure, or NULL if there are no more entries or an error occurs.
ENOMEM |
Insufficient memory to allocate passwd structure. |
/etc/passwd
password database file
SVID 3, BSD 4.3
fgetpwent(3), getpwent_r(3), getpwnam(3), getpwuid(3), getpw(3), putpwent(3), passwd(5)
getpwent(3) |