diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfsd/fault_inject.c | 129 |
1 files changed, 78 insertions, 51 deletions
diff --git a/fs/nfsd/fault_inject.c b/fs/nfsd/fault_inject.c index f1333fc35b33..b1159900d934 100644 --- a/fs/nfsd/fault_inject.c +++ b/fs/nfsd/fault_inject.c @@ -17,79 +17,50 @@ struct nfsd_fault_inject_op { char *file; + u64 (*get)(struct nfsd_fault_inject_op *); + u64 (*set_val)(struct nfsd_fault_inject_op *, u64); + u64 (*set_clnt)(struct nfsd_fault_inject_op *, + struct sockaddr_storage *, size_t); u64 (*forget)(struct nfs4_client *, u64); u64 (*print)(struct nfs4_client *, u64); }; -static struct nfsd_fault_inject_op inject_ops[] = { - { - .file = "forget_clients", - .forget = nfsd_forget_client, - .print = nfsd_print_client, - }, - { - .file = "forget_locks", - .forget = nfsd_forget_client_locks, - .print = nfsd_print_client_locks, - }, - { - .file = "forget_openowners", - .forget = nfsd_forget_client_openowners, - .print = nfsd_print_client_openowners, - }, - { - .file = "forget_delegations", - .forget = nfsd_forget_client_delegations, - .print = nfsd_print_client_delegations, - }, - { - .file = "recall_delegations", - .forget = nfsd_recall_client_delegations, - .print = nfsd_print_client_delegations, - }, -}; - -static long int NUM_INJECT_OPS = sizeof(inject_ops) / sizeof(struct nfsd_fault_inject_op); static struct dentry *debug_dir; -static void nfsd_inject_set(struct nfsd_fault_inject_op *op, u64 val) +static u64 nfsd_inject_set(struct nfsd_fault_inject_op *op, u64 val) { - u64 count = 0; - - if (val == 0) - printk(KERN_INFO "NFSD Fault Injection: %s (all)", op->file); - else - printk(KERN_INFO "NFSD Fault Injection: %s (n = %llu)", op->file, val); + u64 count; nfs4_lock_state(); count = nfsd_for_n_state(val, op->forget); nfs4_unlock_state(); - printk(KERN_INFO "NFSD: %s: found %llu", op->file, count); + return count; } -static void nfsd_inject_set_client(struct nfsd_fault_inject_op *op, +static u64 nfsd_inject_set_client(struct nfsd_fault_inject_op *op, struct sockaddr_storage *addr, size_t addr_size) { - char buf[INET6_ADDRSTRLEN]; struct nfs4_client *clp; - u64 count; + u64 count = 0; nfs4_lock_state(); clp = nfsd_find_client(addr, addr_size); - if (clp) { + if (clp) count = op->forget(clp, 0); - rpc_ntop((struct sockaddr *)&clp->cl_addr, buf, sizeof(buf)); - printk(KERN_INFO "NFSD [%s]: Client %s had %llu state object(s)\n", op->file, buf, count); - } nfs4_unlock_state(); + return count; } -static void nfsd_inject_get(struct nfsd_fault_inject_op *op, u64 *val) +static u64 nfsd_inject_get(struct nfsd_fault_inject_op *op) { + u64 count; + nfs4_lock_state(); - *val = nfsd_for_n_state(0, op->print); + count = nfsd_for_n_state(0, op->print); nfs4_unlock_state(); + + return count; } static ssize_t fault_inject_read(struct file *file, char __user *buf, @@ -99,9 +70,10 @@ static ssize_t fault_inject_read(struct file *file, char __user *buf, char read_buf[25]; size_t size; loff_t pos = *ppos; + struct nfsd_fault_inject_op *op = file_inode(file)->i_private; if (!pos) - nfsd_inject_get(file_inode(file)->i_private, &val); + val = op->get(op); size = scnprintf(read_buf, sizeof(read_buf), "%llu\n", val); return simple_read_from_buffer(buf, len, ppos, read_buf, size); @@ -114,6 +86,7 @@ static ssize_t fault_inject_write(struct file *file, const char __user *buf, size_t size = min(sizeof(write_buf) - 1, len); struct net *net = current->nsproxy->net_ns; struct sockaddr_storage sa; + struct nfsd_fault_inject_op *op = file_inode(file)->i_private; u64 val; char *nl; @@ -129,11 +102,20 @@ static ssize_t fault_inject_write(struct file *file, const char __user *buf, } size = rpc_pton(net, write_buf, size, (struct sockaddr *)&sa, sizeof(sa)); - if (size > 0) - nfsd_inject_set_client(file_inode(file)->i_private, &sa, size); - else { + if (size > 0) { + val = op->set_clnt(op, &sa, size); + if (val) + pr_info("NFSD [%s]: Client %s had %llu state object(s)\n", + op->file, write_buf, val); + } else { val = simple_strtoll(write_buf, NULL, 0); - nfsd_inject_set(file_inode(file)->i_private, val); + if (val == 0) + pr_info("NFSD Fault Injection: %s (all)", op->file); + else + pr_info("NFSD Fault Injection: %s (n = %llu)", + op->file, val); + val = op->set_val(op, val); + pr_info("NFSD: %s: found %llu", op->file, val); } return len; /* on success, claim we got the whole input */ } @@ -149,6 +131,51 @@ void nfsd_fault_inject_cleanup(void) debugfs_remove_recursive(debug_dir); } +static struct nfsd_fault_inject_op inject_ops[] = { + { + .file = "forget_clients", + .get = nfsd_inject_get, + .set_val = nfsd_inject_set, + .set_clnt = nfsd_inject_set_client, + .forget = nfsd_forget_client, + .print = nfsd_print_client, + }, + { + .file = "forget_locks", + .get = nfsd_inject_get, + .set_val = nfsd_inject_set, + .set_clnt = nfsd_inject_set_client, + .forget = nfsd_forget_client_locks, + .print = nfsd_print_client_locks, + }, + { + .file = "forget_openowners", + .get = nfsd_inject_get, + .set_val = nfsd_inject_set, + .set_clnt = nfsd_inject_set_client, + .forget = nfsd_forget_client_openowners, + .print = nfsd_print_client_openowners, + }, + { + .file = "forget_delegations", + .get = nfsd_inject_get, + .set_val = nfsd_inject_set, + .set_clnt = nfsd_inject_set_client, + .forget = nfsd_forget_client_delegations, + .print = nfsd_print_client_delegations, + }, + { + .file = "recall_delegations", + .get = nfsd_inject_get, + .set_val = nfsd_inject_set, + .set_clnt = nfsd_inject_set_client, + .forget = nfsd_recall_client_delegations, + .print = nfsd_print_client_delegations, + }, +}; + +#define NUM_INJECT_OPS (sizeof(inject_ops)/sizeof(struct nfsd_fault_inject_op)) + int nfsd_fault_inject_init(void) { unsigned int i; |