FILEOPEN(3)

💖 FILEOPEN(3) 💖

okay so bestie, you're in Schily´s LIBRARY FUNCTIONS territory now, and this page is all about fileopen() — it opens or creates files, and it's lowkey iconic for it. 💅

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💖 NAME 💖

• fileopen() — opens or creates files ✨

✨ SYNOPSIS ✨

FILE *fileopen(filename,modes)
char *filename;
char *modes;

🎀 DESCRIPTION 🎀

okay so fileopen() opens filename. The mode is specified by the characters from the following set:

🧚 the mode characters, bestie 🧚

• a — seek to end-of-file after opening
• c — create file if necessary
• r — allow read access
• t — truncate file after opening if it already exists
• u — unbuffered all read/writes directly to system
• w — allow write access

🦋 RETURNS 🦋

NULL means open failed, periodt. Any other value should be used in other I/O calls and is of the type FILE — that's the whole vibe check right there. 🫶

🌸 NOTES 🌸

The file is opened with rw rw access. If there is not enough room to allocate a buffer, the file is opened in an unbuffered mode. There is a limit to the number of open files — so like, don't go feral opening everything, okay? 😭

bestie, keep those facts close: NULL = failed open, and the file-open limit is real. no cap. 💀

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with love and FILEOPEN(3) energy, Joerg Schilling · 2022/09/09 💖 (that's the source/version and date sign-off, bestie 🫶)