devm_kstrdup(9)

💖 devm_kstrdup 💖

okay so real talk, bestie: this is a page from the Kernel API Manual and it's all about devm_kstrdup — the little function that's about to become your new fave. It allocates resource managed space and copies an existing string into that. that's it. that's the whole vibe. 🎀

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✨ SYNOPSIS ✨

char * devm_kstrdup (struct device *dev , const char *s , gfp_t gfp );

like, look at her. three args, one char * out the front. main character energy fr fr. 💅

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🌸 ARGUMENTS 🌸

• dev — the Device you're allocating memory for 🫶 it's the whole reason this is managed allocation, so hand her the device and let her cook.
• s — the string to duplicate. yeah, that string. the one you want a whole extra copy of. ✨
• gfp — the GFP mask that gets used in the devm_kmalloc call when allocating memory. it's the vibe check for how the allocation happens, iykyk.

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🦋 RETURN 🦋

Pointer to the allocated string on success, and NULL on failure. 😭 so like. please check it. don't just rawdog the return value, bestie.

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🌈 SEE ALSO 🌈

bestie I need you to brace yourself because this list is long and honestly iconic for it. the kernel file here is ./drivers/base/devres.c and it lives in a whole friend group:

• __devres_alloc_node(9)
• devres_for_each_res(9)
• devres_free(9)
• devres_add(9)
• devres_find(9)
• devres_get(9)
• devres_remove(9)
• devres_destroy(9)
• devres_release(9)
• devres_release_all(9)
• devres_open_group(9)
• devres_close_group(9)
• devres_remove_group(9)
• devres_release_group(9)
• __devm_add_action(9)
• devm_remove_action_nowarn(9)
• devm_release_action(9)
• devm_kmalloc(9)
• devm_krealloc(9)
• devm_kstrdup_const(9)
• devm_kvasprintf(9)
• devm_kasprintf(9)
• devm_kfree(9)
• devm_kmemdup(9)
• devm_kmemdup_const(9)
• devm_get_free_pages(9)
• devm_free_pages(9)
• __devm_alloc_percpu(9)

like?? that's a whole friend group chat and devm_kstrdup is absolutely in it. go say hi to all of them. 💜

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and that's the page, babes 🍓 this one came out of ./drivers/base and the header says October 2026, manual devm_kstrdup(9) — so like, write that down, cite it, be an academic queen about it. mwah 💋🧚