sys_close [fs/open.c]
Closes a file descriptor, so that it no longer refers to any file and may be reused. Any record locks (see sys_fcntl) held on the file it was associated with, and owned by the process, are removed (regardless of the file descriptor that was used to obtain the lock). Arguments
eax | 6
ebx | File descriptor
Return values If the system call succeeds the return value is 0. If the system call fails the return value is one the following errno values:
`-EBADF` | `ebx isn't a valid open file descriptor.`
`-EINTR` | `The sys_close call was interrupted by a signal.`
`-EIO` | `An I/O error occurred.`
Remarks A successful close does not guarantee that the data has been successfully saved to disk, as the kernel defers writes. It is not common for a filesystem to flush the buffers when the stream is closed. If you need to be sure that the data is physically stored use sys_fsync. (It will depend on the disk hardware at this point.) Compatibility n/a