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apparmor: cleanup: simplify code to get ns symlink name

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ns_get_name() is called in only one place and can be folded in.

Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
John Johansen 2018-02-05 18:26:46 +01:00
parent cf91600071
commit a0781209cb
1 changed files with 6 additions and 19 deletions
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25
security/apparmor/apparmorfs.c
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@ -119,9 +119,7 @@ static int aafs_count;
static int aafs_show_path(struct seq_file *seq, struct dentry *dentry)
{
struct inode *inode = d_inode(dentry);
seq_printf(seq, "%s:[%lu]", AAFS_NAME, inode->i_ino);
seq_printf(seq, "%s:[%lu]", AAFS_NAME, d_inode(dentry)->i_ino);
return 0;
}
@ -2392,29 +2390,18 @@ static const char *policy_get_link(struct dentry *dentry,
return NULL;
}
static int ns_get_name(char *buf, size_t size, struct aa_ns *ns,
struct inode *inode)
{
int res = snprintf(buf, size, "%s:[%lu]", AAFS_NAME, inode->i_ino);
if (res < 0 || res >= size)
res = -ENOENT;
return res;
}
static int policy_readlink(struct dentry *dentry, char __user *buffer,
int buflen)
{
struct aa_ns *ns;
char name[32];
int res;
ns = aa_get_current_ns();
res = ns_get_name(name, sizeof(name), ns, d_inode(dentry));
if (res >= 0)
res = snprintf(name, sizeof(name), "%s:[%lu]", AAFS_NAME,
d_inode(dentry)->i_ino);
if (res > 0 && res < sizeof(name))
res = readlink_copy(buffer, buflen, name);
aa_put_ns(ns);
else
res = -ENOENT;
return res;
}