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/* vi: set sw=4 ts=4: */ /* * fallocate() for uClibc - Based off of posix_fallocate() by Erik Andersen * http://www.opengroup.org/onlinepubs/9699919799/functions/posix_fallocate.html * * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> * * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. */ #include <sys/syscall.h> #include <fcntl.h> #include <bits/kernel-features.h> #include <stdint.h> #if defined __NR_fallocate extern __typeof(fallocate) __libc_fallocate attribute_hidden; int attribute_hidden __libc_fallocate(int fd, int mode, __off_t offset, __off_t len) { int ret; # if __WORDSIZE == 32 uint32_t off_low = offset; uint32_t len_low = len; /* may assert that these >>31 are 0 */ uint32_t zero = 0; INTERNAL_SYSCALL_DECL(err); ret = (int) (INTERNAL_SYSCALL(fallocate, err, 6, fd, mode, __LONG_LONG_PAIR (zero, off_low), __LONG_LONG_PAIR (zero, len_low))); # elif __WORDSIZE == 64 INTERNAL_SYSCALL_DECL(err); ret = (int) (INTERNAL_SYSCALL(fallocate, err, 4, fd, mode, offset, len)); # else # error your machine is neither 32 bit or 64 bit ... it must be magical # endif if (unlikely(INTERNAL_SYSCALL_ERROR_P (ret, err))) return INTERNAL_SYSCALL_ERRNO (ret, err); return 0; } # if defined __UCLIBC_LINUX_SPECIFIC__ && defined __USE_GNU strong_alias(__libc_fallocate,fallocate) # if __WORDSIZE == 64 strong_alias(__libc_fallocate,fallocate64) # endif # endif #endif |