diff options
Diffstat (limited to 'src/sys/include')
| -rw-r--r-- | src/sys/include/os/filedesc.h | 10 | ||||
| -rw-r--r-- | src/sys/include/sys/seek.h | 37 |
2 files changed, 47 insertions, 0 deletions
diff --git a/src/sys/include/os/filedesc.h b/src/sys/include/os/filedesc.h index a6a2ac5..b773de9 100644 --- a/src/sys/include/os/filedesc.h +++ b/src/sys/include/os/filedesc.h @@ -30,6 +30,7 @@ #ifndef _OS_FILEDESC_H_ #define _OS_FILEDESC_H_ 1 +#include <sys/seek.h> #include <sys/types.h> #include <os/vnode.h> @@ -117,4 +118,13 @@ ssize_t write(int fd, const void *buf, size_t count); */ ssize_t read(int fd, void *buf, size_t count); +/* + * Reposition the file offset of a file + * + * @fd: File descriptor to reposition + * @offset: Offset to move `fd' to + * @whence: How it should be repositioned + */ +off_t lseek(int fd, off_t offset, int whence); + #endif /* !_OS_FILEDESC_H_ */ diff --git a/src/sys/include/sys/seek.h b/src/sys/include/sys/seek.h new file mode 100644 index 0000000..1edc50b --- /dev/null +++ b/src/sys/include/sys/seek.h @@ -0,0 +1,37 @@ +/* + * Copyright (c) 2025 Ian Marco Moffett and L5 engineers + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _SYS_SEEK_H_ +#define _SYS_SEEK_H_ 1 + +#define SEEK_SET 0 +#define SEEK_CUR 1 +#define SEEK_END 2 + +#endif /* !_SYS_SEEK_H_ */ |