putpwent man page

putpwent — write a password file entry

Synopsis

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

int putpwent(const struct passwd *p, FILE *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, or -1 if an error occurs. In the event of an error, errno is set to indicate the cause.

Errors

EINVAL
Invalid (NULL) argument given.

Attributes

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

InterfaceAttributeValue
putpwent()Thread safetyMT-Safe locale

Conforming to

SVr4.

See Also

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

Colophon

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Referenced By

fgetpwent(3), getpw(3), getpwent(3), getpwent_r(3), getpwnam(3).

2016-03-15 GNU Linux Programmer's Manual