lseek() allows the file offset to be set beyond the end of the file (but this does not change the size of the file). If data is later written at this point, subsequent reads of the data in the gap (a "hole") return null bytes ('\0') until data is actually written into the gap.

2018年2月7日 · lseek (C System Call): lseek is a system call that is used to change the location of the read/write pointer of a file descriptor. The location can be set either in absolute or relative terms. Function Definition. off_t lseek(int fildes, off_t offset, int whence); Field Description

2022年8月27日 · 文章浏览阅读1.8w次，点赞16次，收藏49次。博客主要介绍了lseek()函数，包括其头文件和形式、函数说明、参数说明。参数方面，第一个是文件描述符，第二个是偏移量，第三个有SEEK_SET、SEEK_CUR、SEEK_END三个选项。最后还给出了实例代码。

The lseek() function allows the file offset to be set beyond the end of the file (but this does not change the size of the file). If data is later written at this point, subsequent reads of the data in the gap (a "hole") return null bytes (’\0’) until data is actually written into the gap.

The lseek() family of functions reposition the offset of the open file associated with the file descriptor fd to offset bytes relative to the start, current position, or end of the file, when whence has the value SEEK_SET, SEEK_CUR, or SEEK_END, respectively.

The lseek() system call allows the file offset to be set beyond the end of the existing end-of-file of the file. If data is later written at this point, subsequent reads of the data in the gap return bytes of ze- ros (until data is actually written into the gap).

The lseek() function shall allow the file offset to be set beyond the end of the existing data in the file. If data is later written at this point, subsequent reads of data in the gap shall return bytes with the value 0 until data is actually written into the gap.

2014年6月13日 · The lseek() function allows the file offset to be set beyond the end of the file (but this does not change the size of the file). If data is later written at this point, subsequent reads of the data in the gap (a "hole") return null bytes ('\0') until data is actually written into the gap.

The lseek() function allows the file offset to be set beyond the end of the file (but this does not change the size of the file). If data is later written at this point, subsequent reads of the data in the gap (a "hole") return null bytes (aq\0aq) until data is actually written into the gap.

The lseek, llseek, and lseek64 subroutines set the read-write file pointer for the open file specified by the FileDescriptor parameter. The lseek subroutine limits the Offset to OFF_MAX. In the large file enabled programming environment, lseek subroutine is redefined to lseek64.