1pwd.h(0P)                  POSIX Programmer's Manual                 pwd.h(0P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
10

NAME

12       pwd.h — password structure
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SYNOPSIS

15       #include <pwd.h>
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DESCRIPTION

18       The <pwd.h> header shall define the  struct  passwd,  structure,  which
19       shall include at least the following members:
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22           char    *pw_name   User's login name.
23           uid_t    pw_uid    Numerical user ID.
24           gid_t    pw_gid    Numerical group ID.
25           char    *pw_dir    Initial working directory.
26           char    *pw_shell  Program to use as shell.
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28       The  <pwd.h>  header shall define the gid_t, uid_t, and size_t types as
29       described in <sys/types.h>.
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31       The following shall be declared as functions and may also be defined as
32       macros. Function prototypes shall be provided.
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35           void           endpwent(void);
36           struct passwd *getpwent(void);
37           struct passwd *getpwnam(const char *);
38           int            getpwnam_r(const char *, struct passwd *, char *,
39                              size_t, struct passwd **);
40           struct passwd *getpwuid(uid_t);
41           int            getpwuid_r(uid_t, struct passwd *, char *,
42                              size_t, struct passwd **);
43           void           setpwent(void);
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45       The following sections are informative.
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APPLICATION USAGE

48       None.
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RATIONALE

51       None.
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FUTURE DIRECTIONS

54       None.
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SEE ALSO

57       <sys_types.h>
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59       The  System  Interfaces volume of POSIX.1‐2017, endpwent(), getpwnam(),
60       getpwuid()
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63       Portions of this text are reprinted and reproduced in  electronic  form
64       from  IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
65       table Operating System Interface (POSIX), The Open Group Base  Specifi‐
66       cations  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of
67       Electrical and Electronics Engineers, Inc and The Open Group.   In  the
68       event of any discrepancy between this version and the original IEEE and
69       The Open Group Standard, the original IEEE and The Open Group  Standard
70       is  the  referee document. The original Standard can be obtained online
71       at http://www.opengroup.org/unix/online.html .
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73       Any typographical or formatting errors that appear  in  this  page  are
74       most likely to have been introduced during the conversion of the source
75       files to man page format. To report such errors,  see  https://www.ker‐
76       nel.org/doc/man-pages/reporting_bugs.html .
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80IEEE/The Open Group                  2017                            pwd.h(0P)
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