putpwent(3)                Library Functions Manual                putpwent(3)

NAME
       putpwent - write a password file entry

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <stdio.h>
       #include <sys/types.h>
       #include <pwd.h>

       int putpwent(const struct passwd *restrict p, FILE *restrict stream);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       putpwent():
           Since glibc 2.19:
               _DEFAULT_SOURCE
           glibc 2.19 and earlier:
               _SVID_SOURCE

DESCRIPTION
       The putpwent() function writes a password entry from the structure p in
       the file associated with stream.

       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 putpwent() function returns 0 on success.  On failure, it returns
       -1, and errno is set to indicate the error.

ERRORS
       EINVAL Invalid (NULL) argument given.

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(7).

       +-------------------------------------+---------------+----------------+
       |Interface                            | Attribute     | Value          |
       +-------------------------------------+---------------+----------------+
       |putpwent ()                          | Thread safety | MT-Safe locale |
       +-------------------------------------+---------------+----------------+
STANDARDS
       None.

HISTORY
       SVr4.

SEE ALSO
       endpwent(3), fgetpwent(3), getpw(3), getpwent(3), getpwnam(3),
       getpwuid(3), setpwent(3)

Linux man-pages 6.7               2023-10-31                       putpwent(3)