open_exec(9)

💅 open_exec — like, the Kernel API Manual girlies know ✨

okay so bestie, buckle up, because we're talking about open_exec(9) from the Kernel API Manual and honestly? she's a little wrapper with main character energy 🎀

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🌸 NAME 🌸

open_exec — opens a path name for execution, periodt 💖

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✨ SYNOPSIS ✨

struct file * open_exec (const char *name );

that's it. that's the whole signature. iconic, lowkey 🫶

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🦋 ARGUMENTS 🦋

• name — the path name you're opening, and you're opening it with the intent of executing it, okay? like, that's the whole vibe check for this one 🔥

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💜 DESCRIPTION 💜

so here's what she does: on failure she returns ERR_PTR, and on success you get an allocated struct file back. slay 💅

but ngl, the important lore is this: she's a wrapper for the internal do_open_execat, and because of that, callers must call exe_file_allow_write_access before fput on release. yes, must. not "should", not "if you feel like it" — must. the way that this is non-negotiable is honestly giving rules-are-rules 😭

also, go look at do_close_execat too. she's part of the story, fr fr 👑

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🧚 SEE ALSO 🧚

• Kernel file ./fs/exec.c
• bprm_open_interpreter(9)
• bprm_drop_loader(9)

go read them, iykyk 📚✨

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bestie reminder: exe_file_allow_write_access before fput on release. don't forget, or it's giving bad time 💀

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and that's the page!! brought to you by ./fs, October 2026, mwah 💖🌈⭐