1 /* 2 ** Copyright 2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved. 3 ** Distributed under the terms of the MIT License. 4 */ 5 6 7 #include <fs_info.h> 8 9 #include <errno.h> 10 #include <fcntl.h> 11 #include <stdio.h> 12 #include <stdlib.h> 13 14 #include <errno_private.h> 15 #include <syscalls.h> 16 #include <syscall_utils.h> 17 18 19 dev_t 20 dev_for_path(const char *path) 21 { 22 struct stat stat; 23 int status = _kern_read_stat(AT_FDCWD, path, true, &stat, sizeof(struct stat)); 24 if (status == B_OK) 25 return stat.st_dev; 26 27 RETURN_AND_SET_ERRNO(status); 28 } 29 30 31 dev_t 32 next_dev(int32 *_cookie) 33 { 34 return _kern_next_device(_cookie); 35 // For some reason, this one returns its error code directly 36 } 37 38 39 int 40 fs_stat_dev(dev_t device, fs_info *info) 41 { 42 status_t status = _kern_read_fs_info(device, info); 43 44 if (info != NULL) { 45 if (info->volume_name[0] == 0) { 46 // Give a default name to unnamed volumes 47 off_t divisor = 1ULL << 40; 48 off_t diskSize = info->total_blocks * info->block_size; 49 50 char unit = 'T'; 51 if (diskSize < divisor) { 52 divisor = 1UL << 30; 53 unit = 'G'; 54 if (diskSize < divisor) { 55 divisor = 1UL << 20; 56 unit = 'M'; 57 } 58 } 59 60 double size = double((10 * diskSize + divisor - 1) / divisor); 61 62 sprintf(info->volume_name, "%g %ciB %s volume", size / 10, unit, info->fsh_name); 63 } 64 } 65 66 RETURN_AND_SET_ERRNO(status); 67 } 68