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Fix a bug in the FAT statfs() implementation

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4375 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-02-07 00:29:06 +00:00
parent 7c0e75b8db
commit 28dc73fd3b
2 changed files with 12 additions and 9 deletions
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3
ChangeLog
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@ -2447,3 +2447,6 @@
* lib/net/lib_inetntop.c: Add inet_ntop().
* lib/net/lib_inetpton.c: Add inet_pton().
* include/pthread.h: Correct PTHREAD_MUTEX_INITIALIZER.
* fs/fat/fs_fatfs.c: Fix and error in the FAT statfs() implementation that
was causing some block counts to be reported incorrectly (reported by
david_s5y).

18
fs/fat/fs_fat32.c
View File

@ -1,8 +1,8 @@
/****************************************************************************
* fs/fat/fs_fat32.c
*
* Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
* Copyright (C) 2007-2009, 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* References:
* Microsoft FAT documentation
@ -1706,13 +1706,13 @@ static int fat_statfs(struct inode *mountpt, struct statfs *buf)
/* Everything else follows in units of clusters */
buf->f_blocks = fs->fs_nclusters; /* Total data blocks in the file system */
buf->f_bfree = fat_nfreeclusters(fs, &buf->f_bfree); /* Free blocks in the file system */
buf->f_bavail = buf->f_bfree; /* Free blocks avail to non-superuser */
buf->f_namelen = (8+1+3); /* Maximum length of filenames */
fat_semgive(fs);
return OK;
ret = fat_nfreeclusters(fs, &buf->f_bfree); /* Free blocks in the file system */
if (ret >= 0)
{
buf->f_blocks = fs->fs_nclusters; /* Total data blocks in the file system */
buf->f_bavail = buf->f_bfree; /* Free blocks avail to non-superuser */
buf->f_namelen = (8+1+3); /* Maximum length of filenames */
}
errout_with_semaphore:
fat_semgive(fs);