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posix_fallocate
POSIX specification:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/posix_fallocate.html
Gnulib module: —
Portability problems fixed by Gnulib:
Portability problems not fixed by Gnulib:
off_t
is a 32-bit type, this function may not
work correctly across the entire data range of files larger than 2 GB.
The fix is to use the AC_SYS_LARGEFILE
macro.