putpwent(3) — Linux manual page

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)

COLOPHON

       This page is part of the man-pages (Linux kernel and C library
       user-space interface documentation) project.  Information about
       the project can be found at 
       ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report
       for this manual page, see
       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
       This page was obtained from the tarball man-pages-6.9.1.tar.gz
       fetched from
       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
       2024-06-26.  If you discover any rendering problems in this HTML
       version of the page, or you believe there is a better or more up-
       to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not
       part of the original manual page), send a mail to
       man-pages@man7.org

Linux man-pages 6.9.1          2024-05-02                    putpwent(3)

Pages that refer to this page: fgetpwent(3), getpw(3), getpwent(3), getpwent_r(3), getpwnam(3)

---