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Merge pull request #215 from prife/master 

fix dfs_unmount bug
This commit is contained in:
prife 2013-12-21 04:06:25 -08:00
parent 46f9280a9d 26a31d662d
commit 95006bb503
3 changed files with 21 additions and 15 deletions
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15
components/dfs/filesystems/elmfat/ff.c
View File

@ -108,12 +108,8 @@
#if _MAX_SS != 512 && _MAX_SS != 1024 && _MAX_SS != 2048 && _MAX_SS != 4096
#error Wrong sector size.
#endif
#if _MAX_SS != 512
#define SS(fs) ((fs)->ssize) /* Multiple sector size */
#else
#define SS(fs) 512U /* Fixed sector size */
#endif
#define SS(fs) ((fs)->ssize) /* sector size */
/* Reentrancy related */
#if _FS_REENTRANT
@ -2058,10 +2054,11 @@ FRESULT chk_mounted ( /* FR_OK(0): successful, !=0: any error occurred */
stat = disk_initialize(fs->drv); /* Initialize low level disk I/O layer */
if (stat & STA_NOINIT) /* Check if the initialization succeeded */
return FR_NOT_READY; /* Failed to initialize due to no media or hard error */
#if _MAX_SS != 512 /* Get disk sector size (variable sector size cfg only) */
/* Get disk sector size (variable sector size cfg only) */
if (disk_ioctl(fs->drv, GET_SECTOR_SIZE, &fs->ssize) != RES_OK)
return FR_DISK_ERR;
#endif
#if !_FS_READONLY
if (chk_wp && (stat & STA_PROTECT)) /* Check disk write protection if needed */
return FR_WRITE_PROTECTED;
@ -3601,10 +3598,10 @@ FRESULT f_mkfs (
stat = disk_initialize(drv);
if (stat & STA_NOINIT) return FR_NOT_READY;
if (stat & STA_PROTECT) return FR_WRITE_PROTECTED;
#if _MAX_SS != 512 /* Get disk sector size */
/* Get disk sector size */
if (disk_ioctl(drv, GET_SECTOR_SIZE, &SS(fs)) != RES_OK)
return FR_DISK_ERR;
#endif
if (disk_ioctl(drv, GET_SECTOR_COUNT, &n_vol) != RES_OK || n_vol < 128)
return FR_DISK_ERR;
b_vol = (sfd) ? 0 : 63; /* Volume start sector */

2
components/dfs/filesystems/elmfat/ff.h
View File

@ -84,9 +84,7 @@ typedef struct {
BYTE fsi_flag; /* fsinfo dirty flag (1:must be written back) */
WORD id; /* File system mount ID */
WORD n_rootdir; /* Number of root directory entries (FAT12/16) */
#if _MAX_SS != 512
WORD ssize; /* Bytes per sector (512,1024,2048,4096) */
#endif
#if _FS_REENTRANT
_SYNC_t sobj; /* Identifier of sync object */
#endif

19
components/dfs/src/dfs_fs.c
View File

@ -80,7 +80,7 @@ int dfs_register(const struct dfs_filesystem_operation *ops)
struct dfs_filesystem *dfs_filesystem_lookup(const char *path)
{
struct dfs_filesystem *iter;
struct dfs_filesystem *empty = RT_NULL;
struct dfs_filesystem *fs = RT_NULL;
rt_uint32_t fspath, prefixlen;
prefixlen = 0;
@ -104,13 +104,13 @@ struct dfs_filesystem *dfs_filesystem_lookup(const char *path)
if (fspath > 1 && (strlen(path) > fspath) && (path[fspath] != '/'))
continue;
empty = iter;
fs = iter;
prefixlen = fspath;
}
dfs_unlock();
return empty;
return fs;
}
/**
@ -329,6 +329,7 @@ err1:
int dfs_unmount(const char *specialfile)
{
char *fullpath;
struct dfs_filesystem *iter;
struct dfs_filesystem *fs = RT_NULL;
fullpath = dfs_normalize_path(RT_NULL, specialfile);
@ -342,7 +343,17 @@ int dfs_unmount(const char *specialfile)
/* lock filesystem */
dfs_lock();
fs = dfs_filesystem_lookup(fullpath);
for (iter = &filesystem_table[0];
iter < &filesystem_table[DFS_FILESYSTEMS_MAX]; iter++)
{
/* check if the PATH is mounted */
if ((iter->path != NULL) && (strcmp(iter->path, fullpath) == 0))
{
fs = iter;
break;
}
}
if (fs == RT_NULL ||
fs->ops->unmount == RT_NULL ||
fs->ops->unmount(fs) < 0)