grp.h(7POSIX)

🎀 grp.h(7POSIX) — the group structure, bestie 💖

okay so real talk: this one's from the POSIX Programmer's Manual. ✨

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🫶 PROLOG

bestie. listen. 💅

This page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ — so if you're on Linux, go check the corresponding Linux manual page for the deets on how Linux actually behaves. Orrrr the interface might not even be implemented on Linux at all. 🙈 Not every POSIX thing makes it over, yk?

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🌸 NAME

grp.h — group structure 👑

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✨ SYNOPSIS

#include <grp.h>

that's it. that's the whole synopsis. iconic. 💖

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🦋 DESCRIPTION

okay so the <grp.h> header shall declare the group structure, and that structure shall include these members, fr fr:

char   *gr_name The name of the group.
gid_t   gr_gid  Numerical group ID.
char  **gr_mem  Pointer to a null-terminated array of character
                pointers to member names.

so like — gr_name is the group's name, gr_gid is the numerical group ID, and gr_mem is a pointer to a null-terminated array of character pointers pointing at member names. group chat roster energy. 🫶

The <grp.h> header shall define the gid_t and size_t types as described over in <sys/types.h>. ✨

aaaand the following shall be declared as functions, and they may also be defined as macros. Function prototypes shall be provided:

void           endgrent(void);
struct group  *getgrent(void);
struct group  *getgrgid(gid_t);
int            getgrgid_r(gid_t, struct group *, char *,
                   size_t, struct group **);
struct group  *getgrnam(const char *);
int            getgrnam_r(const char *, struct group *, char *,
                   size_t , struct group **);
void           setgrent(void);

The following sections are informative. 💅 (translation: they're the lil bonus lore, not the hard requirements.)

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🌈 APPLICATION USAGE

None. 😌 nothing here. we move.

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💜 RATIONALE

None. 💀 literally nothing. no reasoning given. we simply vibe.

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⭐ FUTURE DIRECTIONS

None. 🔮 no plans. no notes. periodt.

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🧚 SEE ALSO

• <sys_types.h>
• The System Interfaces volume of POSIX.1‐2017, endgrent(), getgrgid(), getgrnam()

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👑 COPYRIGHT

Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. 💖

In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. 🥊 so if they disagree, the original wins, no cap.

The original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . 🐛

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and that's the whole page, bestie!! 🎀💖✨

this lil masterpiece is brought to you by IEEE/The Open Group, dated 2017, and it's page grp.h(7POSIX) of the POSIX Programmer's Manual. mwah. 💅🦋 go read <sys_types.h> next, iykyk. 🌸