From e331f606a85a2a9e84e9c63c94d43c0517136139 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Mon, 12 Nov 2007 17:32:21 -0500 Subject: [PATCH] nfsd: fail init on /proc/fs/nfs/exports creation failure I assume the reason failure of creation was ignored here was just to continue support embedded systems that want nfsd but not proc. However, in cases where proc is supported it would be clearer to fail entirely than to come up with some features disabled. Acked-by: NeilBrown Signed-off-by: J. Bruce Fields --- fs/nfsd/nfsctl.c | 37 ++++++++++++++++++++++++++++--------- 1 file changed, 28 insertions(+), 9 deletions(-) diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 2bfda9b8f504..2b95597aa4a5 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -674,6 +674,27 @@ static struct file_system_type nfsd_fs_type = { .kill_sb = kill_litter_super, }; +#ifdef CONFIG_PROC_FS +static int create_proc_exports_entry(void) +{ + struct proc_dir_entry *entry; + + entry = proc_mkdir("fs/nfs", NULL); + if (!entry) + return -ENOMEM; + entry = create_proc_entry("fs/nfs/exports", 0, NULL); + if (!entry) + return -ENOMEM; + entry->proc_fops = &exports_operations; + return 0; +} +#else /* CONFIG_PROC_FS */ +static int create_proc_exports_entry(void) +{ + return 0; +} +#endif + static int __init init_nfsd(void) { int retval; @@ -689,23 +710,21 @@ static int __init init_nfsd(void) nfsd_export_init(); /* Exports table */ nfsd_lockd_init(); /* lockd->nfsd callbacks */ nfsd_idmap_init(); /* Name to ID mapping */ - if (proc_mkdir("fs/nfs", NULL)) { - struct proc_dir_entry *entry; - entry = create_proc_entry("fs/nfs/exports", 0, NULL); - if (entry) - entry->proc_fops = &exports_operations; - } + retval = create_proc_exports_entry(); + if (retval) + goto out_free_idmap; retval = register_filesystem(&nfsd_fs_type); if (retval) goto out_free_all; return 0; out_free_all: - nfsd_idmap_shutdown(); - nfsd_export_shutdown(); - nfsd_reply_cache_shutdown(); remove_proc_entry("fs/nfs/exports", NULL); remove_proc_entry("fs/nfs", NULL); + nfsd_idmap_shutdown(); +out_free_idmap: nfsd_lockd_shutdown(); + nfsd_export_shutdown(); + nfsd_reply_cache_shutdown(); out_free_stat: nfsd_stat_shutdown(); nfsd4_free_slabs();