diff options
Diffstat (limited to 'fs/nfsd/nfsctl.c')
| -rw-r--r-- | fs/nfsd/nfsctl.c | 124 |
1 files changed, 103 insertions, 21 deletions
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 77dc9893b7ba..8516137cdbb0 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -304,6 +304,9 @@ static ssize_t write_filehandle(struct file *file, char *buf, size_t size) struct auth_domain *dom; struct knfsd_fh fh; + if (size == 0) + return -EINVAL; + if (buf[size-1] != '\n') return -EINVAL; buf[size-1] = 0; @@ -503,7 +506,7 @@ static ssize_t write_ports(struct file *file, char *buf, size_t size) int len = 0; lock_kernel(); if (nfsd_serv) - len = svc_sock_names(buf, nfsd_serv, NULL); + len = svc_xprt_names(nfsd_serv, buf, 0); unlock_kernel(); return len; } @@ -540,7 +543,7 @@ static ssize_t write_ports(struct file *file, char *buf, size_t size) } return err < 0 ? err : 0; } - if (buf[0] == '-') { + if (buf[0] == '-' && isdigit(buf[1])) { char *toclose = kstrdup(buf+1, GFP_KERNEL); int len = 0; if (!toclose) @@ -554,6 +557,53 @@ static ssize_t write_ports(struct file *file, char *buf, size_t size) kfree(toclose); return len; } + /* + * Add a transport listener by writing it's transport name + */ + if (isalpha(buf[0])) { + int err; + char transport[16]; + int port; + if (sscanf(buf, "%15s %4d", transport, &port) == 2) { + err = nfsd_create_serv(); + if (!err) { + err = svc_create_xprt(nfsd_serv, + transport, port, + SVC_SOCK_ANONYMOUS); + if (err == -ENOENT) + /* Give a reasonable perror msg for + * bad transport string */ + err = -EPROTONOSUPPORT; + } + return err < 0 ? err : 0; + } + } + /* + * Remove a transport by writing it's transport name and port number + */ + if (buf[0] == '-' && isalpha(buf[1])) { + struct svc_xprt *xprt; + int err = -EINVAL; + char transport[16]; + int port; + if (sscanf(&buf[1], "%15s %4d", transport, &port) == 2) { + if (port == 0) + return -EINVAL; + lock_kernel(); + if (nfsd_serv) { + xprt = svc_find_xprt(nfsd_serv, transport, + AF_UNSPEC, port); + if (xprt) { + svc_close_xprt(xprt); + svc_xprt_put(xprt); + err = 0; + } else + err = -ENOTCONN; + } + unlock_kernel(); + return err < 0 ? err : 0; + } + } return -EINVAL; } @@ -616,7 +666,7 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) char *recdir; int len, status; - if (size > PATH_MAX || buf[size-1] != '\n') + if (size == 0 || size > PATH_MAX || buf[size-1] != '\n') return -EINVAL; buf[size-1] = 0; @@ -674,6 +724,27 @@ 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; @@ -683,32 +754,43 @@ static int __init init_nfsd(void) if (retval) return retval; nfsd_stat_init(); /* Statistics */ - nfsd_cache_init(); /* RPC reply cache */ - nfsd_export_init(); /* Exports table */ + retval = nfsd_reply_cache_init(); + if (retval) + goto out_free_stat; + retval = nfsd_export_init(); + if (retval) + goto out_free_cache; 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 = nfsd_idmap_init(); + if (retval) + goto out_free_lockd; + retval = create_proc_exports_entry(); + if (retval) + goto out_free_idmap; retval = register_filesystem(&nfsd_fs_type); - if (retval) { - nfsd_export_shutdown(); - nfsd_cache_shutdown(); - remove_proc_entry("fs/nfs/exports", NULL); - remove_proc_entry("fs/nfs", NULL); - nfsd_stat_shutdown(); - nfsd_lockd_shutdown(); - } + if (retval) + goto out_free_all; + return 0; +out_free_all: + remove_proc_entry("fs/nfs/exports", NULL); + remove_proc_entry("fs/nfs", NULL); +out_free_idmap: + nfsd_idmap_shutdown(); +out_free_lockd: + nfsd_lockd_shutdown(); + nfsd_export_shutdown(); +out_free_cache: + nfsd_reply_cache_shutdown(); +out_free_stat: + nfsd_stat_shutdown(); + nfsd4_free_slabs(); return retval; } static void __exit exit_nfsd(void) { nfsd_export_shutdown(); - nfsd_cache_shutdown(); + nfsd_reply_cache_shutdown(); remove_proc_entry("fs/nfs/exports", NULL); remove_proc_entry("fs/nfs", NULL); nfsd_stat_shutdown(); |