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| author | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-02 10:15:26 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-03-03 01:28:40 -0500 |
| commit | 810c1b2e48d32a8605928c3609262d94853c3a76 (patch) | |
| tree | 8b1552e74152d7a2c8d129bd1c2cd30d0a1222bf | |
| parent | 99890a3be1ee67346300f1e0a873006588760f2a (diff) | |
| download | linux-3.10-810c1b2e48d32a8605928c3609262d94853c3a76.tar.gz linux-3.10-810c1b2e48d32a8605928c3609262d94853c3a76.tar.bz2 linux-3.10-810c1b2e48d32a8605928c3609262d94853c3a76.zip | |
udf: fix i_nlink limit
(256 << sizeof(x)) - 1 is not the maximal possible value of x...
In reality, the maximal allowed value for UDF FileLinkCount is
65535.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/udf/namei.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/udf/namei.c b/fs/udf/namei.c index 2be0f9eb86d..b7c338d5e9d 100644 --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -32,6 +32,8 @@ #include <linux/crc-itu-t.h> #include <linux/exportfs.h> +enum { UDF_MAX_LINKS = 0xffff }; + static inline int udf_match(int len1, const unsigned char *name1, int len2, const unsigned char *name2) { @@ -650,7 +652,7 @@ static int udf_mkdir(struct inode *dir, struct dentry *dentry, int mode) struct udf_inode_info *iinfo; err = -EMLINK; - if (dir->i_nlink >= (256 << sizeof(dir->i_nlink)) - 1) + if (dir->i_nlink >= UDF_MAX_LINKS) goto out; err = -EIO; @@ -1034,9 +1036,8 @@ static int udf_link(struct dentry *old_dentry, struct inode *dir, struct fileIdentDesc cfi, *fi; int err; - if (inode->i_nlink >= (256 << sizeof(inode->i_nlink)) - 1) { + if (inode->i_nlink >= UDF_MAX_LINKS) return -EMLINK; - } fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err); if (!fi) { @@ -1131,9 +1132,7 @@ static int udf_rename(struct inode *old_dir, struct dentry *old_dentry, goto end_rename; retval = -EMLINK; - if (!new_inode && - new_dir->i_nlink >= - (256 << sizeof(new_dir->i_nlink)) - 1) + if (!new_inode && new_dir->i_nlink >= UDF_MAX_LINKS) goto end_rename; } if (!nfi) { |