export RK_PA3

hc

2024-02-19 151fecfb72a0d602dfe79790602ef64b4e241574

 kernel/fs/statfs.c
..
..
@@ -29,6 +29,8 @@
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29
 		flags |= ST_NODIRATIME;
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30
 	if (mnt_flags & MNT_RELATIME)
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31
 		flags |= ST_RELATIME;
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+	if (mnt_flags & MNT_NOSYMFOLLOW)
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+		flags |= ST_NOSYMFOLLOW;
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 	return flags;
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35
 }
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36
 
..
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@@ -66,6 +68,20 @@
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 		buf->f_frsize = buf->f_bsize;
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 	return retval;
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70
 }
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+
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+int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid)
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+{
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+	struct kstatfs st;
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+	int error;
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+
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+	error = statfs_by_dentry(dentry, &st);
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+	if (error)
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+		return error;
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+
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+	*fsid = st.f_fsid;
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+	return 0;
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+}
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+EXPORT_SYMBOL(vfs_get_fsid);
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85
 
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86
 int vfs_statfs(const struct path *path, struct kstatfs *buf)
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87
 {
..
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@@ -114,6 +130,7 @@
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 	if (sizeof(buf) == sizeof(*st))
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 		memcpy(&buf, st, sizeof(*st));
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132
 	else {
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+		memset(&buf, 0, sizeof(buf));
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 		if (sizeof buf.f_blocks == 4) {
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135
 			if ((st->f_blocks | st->f_bfree | st->f_bavail |
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136
 			     st->f_bsize | st->f_frsize) &
..
..
@@ -142,7 +159,6 @@
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 		buf.f_namelen = st->f_namelen;
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160
 		buf.f_frsize = st->f_frsize;
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 		buf.f_flags = st->f_flags;
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-		memset(buf.f_spare, 0, sizeof(buf.f_spare));
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162
 	}
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163
 	if (copy_to_user(p, &buf, sizeof(buf)))
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164
 		return -EFAULT;
..
..
@@ -155,6 +171,7 @@
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171
 	if (sizeof(buf) == sizeof(*st))
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172
 		memcpy(&buf, st, sizeof(*st));
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173
 	else {
174
+		memset(&buf, 0, sizeof(buf));
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175
 		buf.f_type = st->f_type;
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176
 		buf.f_bsize = st->f_bsize;
160
177
 		buf.f_blocks = st->f_blocks;
..
..
@@ -166,7 +183,6 @@
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 		buf.f_namelen = st->f_namelen;
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184
 		buf.f_frsize = st->f_frsize;
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185
 		buf.f_flags = st->f_flags;
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-		memset(buf.f_spare, 0, sizeof(buf.f_spare));
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186
 	}
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187
 	if (copy_to_user(p, &buf, sizeof(buf)))
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188
 		return -EFAULT;