util.c(3)

🌸 util.c(3) — the libmtp utility page, bestie edition 🌸

okay so this is a page from the libmtp library manual (section 3, the library functions zone) and it's literally all about the lil helper squad in util.c. pookie, it's not glamorous work but somebody has to do it and honestly? she ate. 💅

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✨ NAME ✨

libmtp — yeah that's it, that's the whole name section. no notes, she's mysterious, main character energy, we move on. 🎀

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📖 SYNOPSIS 📖

first up, the vibe-check includes you need to have in the house:

#include <sys/time.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include 'config.h'
#include 'libmtp.h'
#include 'util.h'

🦋 Functions

here's the whole roster, cuties:

void device_unknown (const int dev_number, const int id_vendor, const int id_product)
void data_dump (FILE *f, void *buf, uint32_t n)
void data_dump_ascii (FILE *f, void *buf, uint32_t n, uint32_t dump_boundry)
char * strndup (const char *s, size_t n)

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💜 Detailed Description 💜

so like, this file is a little grab-bag of generic utility functions — think of them as the friends you text when you need to debug something, yk? they're not doing anything fancy, they're just always there for you. 🫶

Copyright (C) 2005-2007 Linus Walleij triad@df.lth.se

okay and now the legal corner, bestie, because we respect the paperwork in this house:

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

like. that's the whole deal. no escaping it, the license is the license, periodt. 💀

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🔥 Function Documentation 🔥

🎀 void data_dump (FILE * f, void * buf, uint32_t n)

this one dumps out a number of bytes as a textual, hexadecimal dump. so basically it takes your raw lil bytes and shows them off in hex format like a glow-up. ✨

Parameters

• f — the file to dump to (e.g. stdout or stderr)
• buf — a pointer to the buffer containing the bytes to be dumped out in hex
• n — the number of bytes to dump from this buffer

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🌈 void data_dump_ascii (FILE * f, void * buf, uint32_t n, uint32_t dump_boundry)

same energy as the one above, but extra. this dumps out a number of bytes as a textual, hexadecimal dump and also prints out the string ASCII representation for each line of bytes. it will also print the memory address offset from a certain boundry. it's giving "hex AND ascii, why choose" 💅

Parameters

• f — the file to dump to (e.g. stdout or stderr)
• buf — a pointer to the buffer containing the bytes to be dumped out in hex
• n — the number of bytes to dump from this buffer
• dump_boundry — the address offset to start at (usually 0)

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👑 void device_unknown (const int dev_number, const int id_vendor, const int id_product)

this one prints to stdout info about a device being UNKNOWN, its ids, and libmtp's version number. classic "who is she, i don't know her" moment, except she's a USB device and she's being logged. 😭

Parameters

• dev_number — the device number
• id_vendor — vendor ID from the usb_device_desc struct
• id_product — product ID from the usb_device_desc struct

Referenced by LIBMTP_Detect_Raw_Devices(), and LIBMTP_Detect_Raw_Devices().

yes bestie, that really is the same function listed twice. i'm not editing the source, i'm just the messenger. 🙈

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🧚 Author 🧚

Generated automatically by Doxygen for libmtp from the source code. (so no, a human did not hand-write this, the robot did. and she did a decent job ngl.)

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okay that's the whole page!! and for the lil sign-off: this sweet thing is from libmtp Version 1.1.23, and it's the util.c(3) page, dated right along with that release. slay, go dump some hex, love you bye 🍓💖⭐