POSIX_SPA..._GETFLAGS(3P)

✨ hey bestie, welcome to POSIX_SPA..._GETFLAGS(3P) ✨

okay so real talk first — this little guy lives in the POSIX Programmer's Manual (section 3P, we stan). 🫶

⚠️ PROLOG — heads up, queen: this manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (so like, go check the corresponding Linux manual page for the deets on Linux behavior), or honestly the interface may not even be implemented on Linux at all. 🙈 It's giving "it depends."

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💖 NAME 💖

posix_spawnattr_getflags, posix_spawnattr_setflags — get and set the spawn-flags attribute of a spawn attributes object (ADVANCED REALTIME) ✨

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🌸 SYNOPSIS 🌸

#include <spawn.h>

int posix_spawnattr_getflags(const posix_spawnattr_t *restrict attr,
    short *restrict flags);
int posix_spawnattr_setflags(posix_spawnattr_t *attr, short flags);

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🦋 DESCRIPTION 🦋

So posix_spawnattr_getflags() shall obtain the value of the spawn-flags attribute from the attributes object referenced by attr. That's it, that's the whole job. Get the flags, bestie. 💅

Then posix_spawnattr_setflags() shall set the spawn-flags attribute in an initialized attributes object referenced by attr. (Key word: initialized. Do not come at it with an uninitialized object, that's not the vibe. 😭)

The spawn-flags attribute is basically the "which process attributes are we changing" checklist for the new process image when you invoke posix_spawn() or posix_spawnp(). It is the bitwise-inclusive OR of zero or more of these flags:

• POSIX_SPAWN_RESETIDS
• POSIX_SPAWN_SETPGROUP
• POSIX_SPAWN_SETSIGDEF
• POSIX_SPAWN_SETSIGMASK
• POSIX_SPAWN_SETSCHEDPARAM
• POSIX_SPAWN_SETSCHEDULER

These flags are defined in <spawn.h>. And the default value of this attribute shall be as if no flags were set — so like, clean slate, no notes, iconic. 👑

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🌈 RETURN VALUE 🌈

Upon successful completion, posix_spawnattr_getflags() shall return zero and store the value of the spawn-flags attribute of attr into the object referenced by the flags parameter. Otherwise, an error number shall be returned to indicate the error. (Zero = slay, nonzero = something went sideways. 😭)

Upon successful completion, posix_spawnattr_setflags() shall return zero; otherwise, an error number shall be returned to indicate the error.

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💀 ERRORS 💀

These functions may fail if:

• EINVAL — the value specified by attr is invalid. 🚩

And posix_spawnattr_setflags() may fail if:

• EINVAL — the value of the attribute being set is not valid. 🚩

✨ psst — the following sections are informative, not normative. Just so you know. 💅

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🎀 EXAMPLES 🎀

None.

Literally nothing. Not one example. The silence is deafening. 🙈

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🍓 APPLICATION USAGE 🍓

These functions are part of the Spawn option and need not be provided on all implementations. So if you go looking for them and they're not there… that's allowed, bestie. No cap. 😭

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🧚 RATIONALE 🧚

None.

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⭐ FUTURE DIRECTIONS ⭐

None.

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👑 SEE ALSO 👑

• posix_spawn()
• posix_spawnattr_destroy()
• posix_spawnattr_getsigdefault()
• posix_spawnattr_getpgroup()
• posix_spawnattr_getschedparam()
• posix_spawnattr_getschedpolicy()
• posix_spawnattr_getsigmask()

And from the Base Definitions volume of POSIX.1‐2017: <spawn.h> 💜

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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. 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 one came to you from IEEE/The Open Group, 2017 — shoutout to the 2017 girlies, they really did that. mwah 💖✨🎀