yystopf/openharmony_kernel_liteos_a
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fix: kernel crashed after rmdir the umounted folder

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Close: I3NGBT
Change-Id: I70130c42061e51f5978b48befea66a5925386343
This commit is contained in:
chenwei
2021-04-21 17:07:02 +08:00
parent c6e921241b
commit ac0d083b1c
2 changed files with 9 additions and 25 deletions
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19
fs/jffs2/src/vfs_jffs2.c
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@@ -145,7 +145,6 @@ int VfsJffs2Bind(struct Mount *mnt, struct Vnode *blkDriver, const void *data)
g_jffs2PartList[partNo] = blkDriver;
PRINTK("%s-%d: vnode=%p, inode=%p, i_nlink=%d\n", __FUNCTION__, __LINE__, pv, rootNode, rootNode->i_nlink);
LOS_MuxUnlock(&g_jffs2FsLock);
return 0;
@@ -220,6 +219,9 @@ int VfsJffs2Lookup(struct Vnode *parentVnode, const char *path, int len, struct
Jffs2SetVtype(node, newVnode);
node->i_vnode = newVnode;
if (&g_jffs2Vops != parentVnode->vop) {
LOS_Panic("jffs2 vop failed");
}
newVnode->vop = parentVnode->vop;
newVnode->fop = parentVnode->fop;
newVnode->data = node;
@@ -232,7 +234,6 @@ int VfsJffs2Lookup(struct Vnode *parentVnode, const char *path, int len, struct
(void)VfsHashInsert(newVnode, node->i_ino);
*ppVnode = newVnode;
PRINTK("%s-%d: vnode=%p, inode=%p, i_nlink=%d path=%s\n", __FUNCTION__, __LINE__, newVnode, node, node->i_nlink, path);
LOS_MuxUnlock(&g_jffs2FsLock);
return 0;
@@ -260,6 +261,9 @@ int VfsJffs2Create(struct Vnode *parentVnode, const char *path, int mode, struct
newVnode->type = VNODE_TYPE_REG;
newNode->i_vnode = newVnode;
newVnode->vop = parentVnode->vop;
if (&g_jffs2Vops != parentVnode->vop) {
LOS_Panic("jffs2 vop failed");
}
newVnode->fop = parentVnode->fop;
newVnode->data = newNode;
newVnode->parent = parentVnode;
@@ -271,7 +275,6 @@ int VfsJffs2Create(struct Vnode *parentVnode, const char *path, int mode, struct
(void)VfsHashInsert(newVnode, newNode->i_ino);
*ppVnode = newVnode;
PRINTK("%s-%d: vnode=%p, inode=%p, i_nlink=%d path=%s\n", __FUNCTION__, __LINE__, newVnode, newNode, newNode->i_nlink, path);
LOS_MuxUnlock(&g_jffs2FsLock);
return 0;
@@ -531,6 +534,9 @@ int VfsJffs2Mkdir(struct Vnode *parentNode, const char *dirName, mode_t mode, st
newVnode->type = VNODE_TYPE_DIR;
node->i_vnode = newVnode;
newVnode->vop = parentNode->vop;
if (&g_jffs2Vops != parentVnode->vop) {
LOS_Panic("jffs2 vop failed");
}
newVnode->fop = parentNode->fop;
newVnode->data = node;
newVnode->parent = parentNode;
@@ -542,7 +548,6 @@ int VfsJffs2Mkdir(struct Vnode *parentNode, const char *dirName, mode_t mode, st
*ppVnode = newVnode;
(void)VfsHashInsert(newVnode, node->i_ino);
PRINTK("%s-%d: vnode=%p, inode=%p, i_nlink=%d path=%s\n", __FUNCTION__, __LINE__, newVnode, node, node->i_nlink, dirName);
LOS_MuxUnlock(&g_jffs2FsLock);
@@ -597,8 +602,6 @@ int VfsJffs2Chattr(struct Vnode *pVnode, struct IATTR *attr)
return ret;
}
extern struct Vnode *g_parentOfCoveredVnode;
int VfsJffs2Rmdir(struct Vnode *parentVnode, struct Vnode *targetVnode, char *path)
{
int ret;
@@ -609,10 +612,6 @@ int VfsJffs2Rmdir(struct Vnode *parentVnode, struct Vnode *targetVnode, char *pa
LOS_MuxLock(&g_jffs2FsLock, (uint32_t)JFFS2_WAITING_FOREVER);
if (parentVnode->data == NULL) {
PRINT_ERR("%s-%d: rmdir parent of mounted vnode. vnode=%p userCount=%d inode=%p\n", __FUNCTION__, __LINE__, parentVnode, parentVnode->useCount, parentVnode->data);
PRINT_ERR("%s-%d: global rmdir parent of mounted vnode. vnode=%p userCount=%d inode=%p\n", __FUNCTION__, __LINE__, g_parentOfCoveredVnode, g_parentOfCoveredVnode->useCount, g_parentOfCoveredVnode->data);
}
ret = jffs2_rmdir((struct jffs2_inode *)parentVnode->data, (struct jffs2_inode *)targetVnode->data,
(const unsigned char *)path);