getpw(3) Library Functions Manual getpw(3)NAME
getpw - get name from uid
SYNOPSIS
getpw (
uid_t uid,
char *buf );
DESCRIPTION
The getpw routine has been superseded by getpwuid. See getpwent(3).
The getpw routine searches the password file for the (numerical) uid, and fills in buf with the corresponding line; it returns nonzero if
uid could not be found. The line is null terminated.
ERRORS
Nonzero return on error.
FILES
/etc/passwd
RELATED INFORMATION getpwent(3), passwd(4) delim off
getpw(3)
Check Out this Related Man Page
GETPW(3) Linux Programmer's Manual GETPW(3)NAME
getpw - Re-construct password line entry
SYNOPSIS
#define _GNU_SOURCE
#include <sys/types.h>
#include <pwd.h>
int getpw(uid_t uid, char *buf);
DESCRIPTION
The getpw() function reconstructs the password line entry for the given user ID uid in the buffer buf. The returned buffer contains a line
of format
name:passwd:uid:gid:gecos:dir:shell
The passwd structure is defined in <pwd.h> as follows:
struct passwd {
char *pw_name; /* username */
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 */
};
RETURN VALUE
The getpw() function returns 0 on success; on error, it returns -1, and errno is set to indicate the error.
ERRORS
EINVAL buf is NULL.
ENOENT No user corresponding to uid.
ENOMEM Insufficient memory to allocate passwd structure.
FILES
/etc/passwd
password database file
CONFORMING TO
SVr2.
BUGS
The getpw() function is dangerous as it may overflow the provided buffer buf. It is obsoleted by getpwuid(3).
SEE ALSO endpwent(3), fgetpwent(3), getpwent(3), getpwnam(3), getpwuid(3), putpwent(3), setpwent(3), passwd(5)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2007-12-12 GETPW(3)