buffer_flush(3)

💖 buffer_flush(3) 💖

from the Library Functions Manual, bestie 🫶

🌸 NAME 🌸

buffer_flush — feed buffer to write function. that's the whole assignment, no cap. 💌

✨ SYNTAX ✨

#include <libowfat/buffer.h>

int buffer_flush(buffer* b);

💅 DESCRIPTION 💅

okay so bestie, here's the tea ☕: buffer_flush feeds a string d[0], d[1], ..., d[dlen-1] to the write operation by calling

op(fd,d,dlen)

then the rules for op are giving very specific contract energy:

• If op successfully handles one or more bytes at the beginning of the string, it must return the number of bytes handled. 💯 If this number is smaller than dlen, buffer_flush will call op again with the rest of the string. no cap.
• If op does not handle any bytes, and does not encounter an error, it must return 0, or return -1 with errno set to EINTR; in either case, buffer_flush will immediately call op again. 🔁
• If op encounters an error, it must return -1 with errno set to something other than EINTR; buffer_flush will pass the error to the caller. 🚨

On success, buffer_flush returns 0. ✨ On error, buffer_flush returns -1, setting errno appropriately. 😭

👀 SEE ALSO 👀

• buffer_init(3)

mwah 💋 — that's the whole thing from the Library Functions Manual, buffer_flush(3), footer vibes only: no version/date drama, just the page name, iconic. 💅✨