explain_creat(3)

✨ explain_creat(3) — the libexplain page, bestie edition ✨

okay so this is the manual page for explain_creat from the Library Functions Manual 💖 it's literally here to explain creat(2) errors to you like a bestie would, no cap.

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🌸 NAME 🌸

explain_creat — explain creat(2) errors 💅

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🦋 SYNOPSIS 🦋

#include <libexplain/creat.h>
const char *explain_creat(const char *pathname, int mode);
const char *explain_errno_creat(int errnum, const char *pathname, int
mode);
void explain_message_creat(char *message, int message_size, const char
*pathname, int mode);
void explain_message_errno_creat(char *message, int message_size, int
errnum, const char *pathname, int mode);

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✨ DESCRIPTION ✨

These functions may be used to obtain explanations for errors returned by the creat(2) system call. periodt. 🫶

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💜 explain_creat

const char *explain_creat(const char *pathname, int mode);

The explain_creat function is used to obtain an explanation of an error returned by the creat(2) system call. The least the message will contain is the value of strerror(errno), but usually it will do much better, and indicate the underlying cause in more detail. it's giving ✨thorough✨ fr fr.

The errno global variable will be used to obtain the error value to be decoded. 👑

This function is intended to be used in a fashion similar to the following example:

if (creat(pathname, mode) < 0)
{
    fprintf(stderr, "%s\n", explain_creat(pathname, mode));
    exit(EXIT_FAILURE);
}

• pathname — The original pathname, exactly as passed to the creat(2) system call.
• mode — The original mode, exactly as passed to the creat(2) system call.

Returns:

The message explaining the error. This message buffer is shared by all libexplain functions which do not supply a buffer in their argument list. This will be overwritten by the next call to any libexplain function which shares this buffer, including other threads. 😭 shared buffer moment.

Note: This function is not thread safe, because it shares a return buffer across all threads, and many other functions in this library. like... she's iconic but she's not thread safe, sorry bestie 💀

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🎀 explain_errno_creat

const char *explain_errno_creat(int errnum, const char *pathname, int
mode);

The explain_errno_creat function is used to obtain an explanation of an error returned by the creat(2) system call. The least the message will contain is the value of strerror(errnum), but usually it will do much better, and indicate the underlying cause in more detail. 🌈

This function is intended to be used in a fashion similar to the following example:

if (creat(pathname, mode) < 0)
{
    int err = errno;
    fprintf(stderr, "%s\n", explain_errno_creat(err, pathname, mode));
    exit(EXIT_FAILURE);
}

• errnum — The error value to be decoded, usually obtained from the errno global variable just before this function is called. This is necessary if you need to call any code between the system call to be explained and this function, because many libc functions will alter the value of errno. 👀 so grab it early, bestie.
• pathname — The original pathname, exactly as passed to the creat(2) system call.
• mode — The original mode, exactly as passed to the creat(2) system call.

Returns:

The message explaining the error. This message buffer is shared by all libexplain functions which do not supply a buffer in their argument list. This will be overwritten by the next call to any libexplain function which shares this buffer, including other threads. 🙈

Note: This function is not thread safe, because it shares a return buffer across all threads, and many other functions in this library. same energy as before, no cap 💅

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🧚 explain_message_creat

void explain_message_creat(char *message, int message_size, const char
*pathname, int mode);

The explain_message_creat function may be used to obtain an explanation of an error returned by the creat(2) system call. The least the message will contain is the value of strerror(errno), but usually it will do much better, and indicate the underlying cause in more detail. 🌸

The errno global variable will be used to obtain the error value to be decoded.

This function is intended to be used in a fashion similar to the following example:

if (creat(pathname, mode) < 0)
{
    char message[3000];
    explain_message_creat(message, sizeof(message), pathname, mode);
    fprintf(stderr, "%s\n", message);
    exit(EXIT_FAILURE);
}

• message — The location in which to store the returned message. If a suitable message return buffer is supplied, this function is thread safe. 🫶 you brought your own buffer, so now you're safe, queen.
• message_size — The size in bytes of the location in which to store the returned message.
• pathname — The original pathname, exactly as passed to the creat(2) system call.
• mode — The original mode, exactly as passed to the creat(2) system call.

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⭐ explain_message_errno_creat

void explain_message_errno_creat(char *message, int message_size, int
errnum, const char *pathname, int mode);

The explain_message_errno_creat function may be used to obtain an explanation of an error returned by the creat(2) system call. The least the message will contain is the value of strerror(errnum), but usually it will do much better, and indicate the underlying cause in more detail. 🔥

This function is intended to be used in a fashion similar to the following example:

if (creat(pathname, mode) < 0)
{
    int err = errno;
    char message[3000];
    explain_message_errno_creat(message, sizeof(message), err, pathname,
        mode);
    fprintf(stderr, "%s\n", message);
    exit(EXIT_FAILURE);
}

• message — The location in which to store the returned message. If a suitable message return buffer is supplied, this function is thread safe. ✨
• message_size — The size in bytes of the location in which to store the returned message.
• errnum — The error value to be decoded, usually obtained from the errno global variable just before this function is called. This is necessary if you need to call any code between the system call to be explained and this function, because many libc functions will alter the value of errno. 🍓 fr, errno gets changed by everything.
• pathname — The original pathname, exactly as passed to the creat(2) system call.
• mode — The original mode, exactly as passed to the creat(2) system call.

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👑 SEE ALSO 👑

• creat(2) — open and possibly create a file or device
• explain_creat_or_die(3) — create and open a file and report errors

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💖 COPYRIGHT 💖

libexplain version 1.4 Copyright (C) 2008 Peter Miller

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and that's the whole page, bestie 🎀 libexplain version 1.4, Copyright (C) 2008 Peter Miller, and this was explain_creat(3) — go explain those creat(2) errors and slay 💅✨🦋