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pkg/fatfs: implement statvfs()

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This hooks up the statvfs() function to query file system properties.
This commit is contained in:
Benjamin Valentin 2022-02-10 15:46:42 +01:00
parent c423148bbc
commit 9982cf5c3e
1 changed files with 26 additions and 0 deletions
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26
pkg/fatfs/fatfs_vfs/fatfs_vfs.c
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@ -122,6 +122,31 @@ static int _umount(vfs_mount_t *mountp)
return fatfs_err_to_errno(res);
}
static int _statvfs(vfs_mount_t *mountp, const char *restrict path, struct statvfs *restrict buf)
{
(void)path;
fatfs_desc_t *fs_desc = (fatfs_desc_t *)mountp->private_data;
mtd_dev_t *mtd = fs_desc->dev;
DWORD nclst;
FATFS *fs;
int res = f_getfree(fs_desc->abs_path_str_buff, &nclst, &fs);
if (res != FR_OK) {
return fatfs_err_to_errno(res);
}
unsigned sector_size = mtd->page_size * mtd->pages_per_sector;
buf->f_bsize = fs->csize * sector_size;
buf->f_frsize = fs->csize * sector_size;
buf->f_blocks = mtd->sector_count / fs->csize;
buf->f_bfree = nclst;
buf->f_bavail = nclst;
buf->f_namemax = FF_USE_LFN ? FF_LFN_BUF : FF_SFN_BUF;
return 0;
}
static int _unlink(vfs_mount_t *mountp, const char *name)
{
fatfs_desc_t *fs_desc = (fatfs_desc_t *)mountp->private_data;
@ -499,6 +524,7 @@ static const vfs_file_system_ops_t fatfs_fs_ops = {
.mkdir = _mkdir,
.rmdir = _rmdir,
.stat = vfs_sysop_stat_from_fstat,
.statvfs = _statvfs,
};
static const vfs_file_ops_t fatfs_file_ops = {