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47 lines
1.0 KiB
C
47 lines
1.0 KiB
C
/* See the end of this file for copyright, license, and warranty information. */
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#include <ardix/file.h>
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#include <ardix/malloc.h>
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#include <ardix/syscall.h>
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#include <ardix/userspace.h>
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#include <errno.h>
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#include <stddef.h>
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#include <toolchain.h>
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long sys_write(int fd, __user const void *buf, size_t len)
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{
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long ret = 0;
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void *copy;
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struct file *f = file_get(fd);
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if (f == NULL)
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return -EBADF;
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copy = malloc(len);
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if (copy == NULL) {
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file_put(f);
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return -ENOMEM;
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}
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len = copy_from_user(copy, buf, len);
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ret = file_write(f, copy, len);
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free(copy);
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file_put(f);
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return ret;
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}
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/*
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* This file is part of Ardix.
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* Copyright (c) 2020, 2021 Felix Kopp <owo@fef.moe>.
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*
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* Ardix is non-violent software: you may only use, redistribute,
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* and/or modify it under the terms of the CNPLv6+ as found in
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* the LICENSE file in the source code root directory or at
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* <https://git.pixie.town/thufie/CNPL>.
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*
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* Ardix comes with ABSOLUTELY NO WARRANTY, to the extent
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* permitted by applicable law. See the CNPLv6+ for details.
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*/
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