diff options
Diffstat (limited to 'libc/sysdeps/linux/common/posix_fallocate64.c')
| -rw-r--r-- | libc/sysdeps/linux/common/posix_fallocate64.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/posix_fallocate64.c b/libc/sysdeps/linux/common/posix_fallocate64.c new file mode 100644 index 000000000..818d86884 --- /dev/null +++ b/libc/sysdeps/linux/common/posix_fallocate64.c @@ -0,0 +1,39 @@ +/* vi: set sw=4 ts=4: */ +/* + * posix_fallocate() for uClibc + * 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 + +# if __WORDSIZE == 64 +/* Can use normal posix_fallocate() */ +# elif __WORDSIZE == 32 +int posix_fallocate64(int fd, __off64_t offset, __off64_t len) +{ + int ret; + uint32_t off_low = offset & 0xffffffff; + uint32_t off_high = offset >> 32; + uint32_t len_low = len & 0xffffffff; + uint32_t len_high = len >> 32; + INTERNAL_SYSCALL_DECL(err); + ret = (int) (INTERNAL_SYSCALL(fallocate, err, 6, fd, 0, + __LONG_LONG_PAIR (off_high, off_low), + __LONG_LONG_PAIR (len_high, len_low))); + if (unlikely(INTERNAL_SYSCALL_ERROR_P (ret, err))) + return INTERNAL_SYSCALL_ERRNO (ret, err); + return 0; +} +# else +# error your machine is neither 32 bit or 64 bit ... it must be magical +# endif +#endif |