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| author | Stanislav Kinsbursky <skinsbursky@parallels.com> | 2013-02-01 15:56:17 +0300 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2013-02-15 11:21:01 -0500 |
| commit | 96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5 (patch) | |
| tree | f019d279e6cd5bf255a81c23f7aac3564397f832 | |
| parent | 11f779421a39b86da8a523d97e5fd3477878d44f (diff) | |
| download | linux-exynos-96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5.tar.gz linux-exynos-96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5.tar.bz2 linux-exynos-96d851c4d28de8cc83fe2bd5c6bc2eb8f253a6c5.zip | |
nfsd: use proper net while reading "exports" file
Functuon "exports_open" is used for both "/proc/fs/nfs/exports" and
"/proc/fs/nfsd/exports" files.
Now NFSd filesystem is containerised, so proper net can be taken from
superblock for "/proc/fs/nfsd/exports" reader.
But for "/proc/fs/nfsd/exports" only current->nsproxy->net_ns can be used.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| -rw-r--r-- | fs/nfsd/nfsctl.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index f6d448e6eb28..8ead2c25ce65 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -125,11 +125,11 @@ static const struct file_operations transaction_ops = { .llseek = default_llseek, }; -static int exports_open(struct inode *inode, struct file *file) +static int exports_net_open(struct net *net, struct file *file) { int err; struct seq_file *seq; - struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id); + struct nfsd_net *nn = net_generic(net, nfsd_net_id); err = seq_open(file, &nfs_exports_op); if (err) @@ -140,8 +140,26 @@ static int exports_open(struct inode *inode, struct file *file) return 0; } -static const struct file_operations exports_operations = { - .open = exports_open, +static int exports_proc_open(struct inode *inode, struct file *file) +{ + return exports_net_open(current->nsproxy->net_ns, file); +} + +static const struct file_operations exports_proc_operations = { + .open = exports_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, + .owner = THIS_MODULE, +}; + +static int exports_nfsd_open(struct inode *inode, struct file *file) +{ + return exports_net_open(inode->i_sb->s_fs_info, file); +} + +static const struct file_operations exports_nfsd_operations = { + .open = exports_nfsd_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, @@ -1018,7 +1036,7 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) static int nfsd_fill_super(struct super_block * sb, void * data, int silent) { static struct tree_descr nfsd_files[] = { - [NFSD_List] = {"exports", &exports_operations, S_IRUGO}, + [NFSD_List] = {"exports", &exports_nfsd_operations, S_IRUGO}, [NFSD_Export_features] = {"export_features", &export_features_operations, S_IRUGO}, [NFSD_FO_UnlockIP] = {"unlock_ip", @@ -1081,7 +1099,8 @@ static int create_proc_exports_entry(void) entry = proc_mkdir("fs/nfs", NULL); if (!entry) return -ENOMEM; - entry = proc_create("exports", 0, entry, &exports_operations); + entry = proc_create("exports", 0, entry, + &exports_proc_operations); if (!entry) return -ENOMEM; return 0; |