match_int(9)

💅 match_int(9) — the kernel manpage, bestie edition ✨

okay so you found yourself staring at match_int, the little parsing gremlin from the kernel's parser.c squad 🎀 she's not flashy, but she works, and honestly? iconic.

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🌸 NAME 🌸

match_int — scan a decimal representation of an integer out of a substring_t 🧚

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✨ SYNOPSIS ✨

int match_int (substring_t *s , int *result );

that's the whole signature, no cap 🫶

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🦋 ARGUMENTS 🦋

• s — the substring_t you want scanned, like, the actual text chunk under the microscope 🔍
• result — where the resulting integer lands if everything goes off without a hitch 💖

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👑 DESCRIPTION 👑

Attempts to parse the substring_t s as a decimal integer. that's it, that's the job — she reads the substring, she decides if it's giving "decimal integer" or not. highkey straightforward, lowkey essential 🌈

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🔥 RETURN 🔥

On success, sets result to the integer represented by the string and returns 0 ⭐

On failure? returns -EINVAL or -ERANGE 😭 so yeah, check that return value, bestie, don't just assume it ate 💀

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💜 SEE ALSO 💜

Kernel file ./lib/parser.c plus the whole friend group:

• match_one(9)
• match_token(9)
• match_number(9)
• match_u64int(9)
• match_uint(9)
• match_u64(9)
• match_octal(9)
• match_hex(9)
• match_wildcard(9)
• match_strlcpy(9)
• match_strdup(9)

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mwah 💋 this one lives in ./lib, dated October 2026 — go read the whole parser.c squad, they ate and left no crumbs 👑✨