putpwent(3) - Linux manual page (original) (raw)

putpwent(3) Library Functions Manual putpwent(3)

NAME top

   putpwent - write a password file entry

LIBRARY top

   Standard C library (_libc_, _-lc_)

SYNOPSIS top

   **#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 top

   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 top

   The **putpwent**() function returns 0 on success.  On failure, it
   returns -1, and _[errno](../man3/errno.3.html)_ is set to indicate the error.

ERRORS top

   **EINVAL** Invalid (NULL) argument given.

ATTRIBUTES top

   For an explanation of the terms used in this section, see
   [attributes(7)](../man7/attributes.7.html).
   ┌───────────────────────────────┬───────────────┬────────────────┐
   │ **Interface** │ **Attribute** │ **Value** │
   ├───────────────────────────────┼───────────────┼────────────────┤
   │ **putpwent**()                    │ Thread safety │ MT-Safe locale │
   └───────────────────────────────┴───────────────┴────────────────┘

STANDARDS top

   None.

HISTORY top

   SVr4.

SEE ALSO top

   [endpwent(3)](../man3/endpwent.3.html), [fgetpwent(3)](../man3/fgetpwent.3.html), [getpw(3)](../man3/getpw.3.html), [getpwent(3)](../man3/getpwent.3.html), [getpwnam(3)](../man3/getpwnam.3.html),
   [getpwuid(3)](../man3/getpwuid.3.html), [setpwent(3)](../man3/setpwent.3.html)

COLOPHON top

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   man-pages@man7.org

Linux man-pages 6.10 2024-07-23 putpwent(3)

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