45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/**
|
|
* @brief Wait for filesystem buffered writes to finish.
|
|
*
|
|
* And by "wait" and "to finish" I mean "tell the block device
|
|
* to write everything because it doesn't do that asynchronously".
|
|
*
|
|
* Currently only syncs the block device that owns the current
|
|
* working directory because I haven't set this up to iterate
|
|
* over mounts yet.
|
|
*
|
|
* It will correctly wait until the sync finishes, though.
|
|
*
|
|
* @copyright
|
|
* This file is part of ToaruOS and is released under the terms
|
|
* of the NCSA / University of Illinois License - see LICENSE.md
|
|
* Copyright (C) 2021 K. Lange
|
|
*/
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
int main(int argc, char * argv[]) {
|
|
char * file = ".";
|
|
if (argc > 1) {
|
|
file = argv[1];
|
|
}
|
|
int fd = open(file,O_RDONLY|O_DIRECTORY);
|
|
if (fd < 0) {
|
|
fd = open(file,O_RDONLY);
|
|
}
|
|
if (fd < 0) {
|
|
fprintf(stderr, "sync: open: %s: %s (%d)\n", file, strerror(errno), fd);
|
|
return 1;
|
|
}
|
|
int res = ioctl(fd, IOCTLSYNC, NULL);
|
|
if (res < 0) {
|
|
fprintf(stderr, "sync: ioctl: %s (%d)\n", strerror(errno), fd);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|