putpwent3
Write a password file entry
Usage
#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
Library
Standard C library (libc, -lc)
Overview
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 |
Releases
19 releases since Debian 1.1 (Buzz); the text changed 13 times.