Merge bk://linux.bkbits.net/linux-2.5

into vc.cvut.cz:/mnt2/usr/src/bk/linus/ncpfs

fs/ncpfs/Makefile

@@ -5,7 +5,7 @@
 obj-$(CONFIG_NCP_FS) += ncpfs.o
 
 ncpfs-objs   := dir.o file.o inode.o ioctl.o mmap.o ncplib_kernel.o sock.o \
-		ncpsign_kernel.o
+		ncpsign_kernel.o getopt.o
 ifeq ($(CONFIG_NCPFS_EXTRAS),y)
 ncpfs-objs   += symlink.o
 endif

fs/ncpfs/getopt.c

+/*
+ * getopt.c
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/errno.h>
+
+#include "getopt.h"
+
+/**
+ *	ncp_getopt - option parser
+ *	@caller: name of the caller, for error messages
+ *	@options: the options string
+ *	@opts: an array of &struct option entries controlling parser operations
+ *	@optopt: output; will contain the current option
+ *	@optarg: output; will contain the value (if one exists)
+ *	@flag: output; may be NULL; should point to a long for or'ing flags
+ *	@value: output; may be NULL; will be overwritten with the integer value
+ *		of the current argument.
+ *
+ *	Helper to parse options on the format used by mount ("a=b,c=d,e,f").
+ *	Returns opts->val if a matching entry in the 'opts' array is found,
+ *	0 when no more tokens are found, -1 if an error is encountered.
+ */
+int ncp_getopt(const char *caller, char **options, const struct ncp_option *opts,
+	       char **optopt, char **optarg, unsigned long *value)
+{
+	char *token;
+	char *val;
+
+	do {
+		if ((token = strsep(options, ",")) == NULL)
+			return 0;
+	} while (*token == '\0');
+	if (optopt)
+		*optopt = token;
+
+	if ((val = strchr (token, '=')) != NULL) {
+		*val++ = 0;
+	}
+	*optarg = val;
+	for (; opts->name; opts++) {
+		if (!strcmp(opts->name, token)) {
+			if (!val) {
+				if (opts->has_arg & OPT_NOPARAM) {
+					return opts->val;
+				}
+				printk(KERN_INFO "%s: the %s option requires an argument\n",
+				       caller, token);
+				return -EINVAL;
+			}
+			if (opts->has_arg & OPT_INT) {
+				char* v;
+
+				*value = simple_strtoul(val, &v, 0);
+				if (!*v) {
+					return opts->val;
+				}
+				printk(KERN_INFO "%s: invalid numeric value in %s=%s\n",
+					caller, token, val);
+				return -EDOM;
+			}
+			if (opts->has_arg & OPT_STRING) {
+				return opts->val;
+			}
+			printk(KERN_INFO "%s: unexpected argument %s to the %s option\n",
+				caller, val, token);
+			return -EINVAL;
+		}
+	}
+	printk(KERN_INFO "%s: Unrecognized mount option %s\n", caller, token);
+	return -EOPNOTSUPP;
+}

fs/ncpfs/getopt.h

+#ifndef _LINUX_GETOPT_H
+#define _LINUX_GETOPT_H
+
+#define OPT_NOPARAM	1
+#define OPT_INT		2
+#define OPT_STRING	4
+struct ncp_option {
+	const char *name;
+	unsigned int has_arg;
+	int val;
+};
+
+extern int ncp_getopt(const char *caller, char **options, const struct ncp_option *opts,
+		      char **optopt, char **optarg, unsigned long *value);
+
+#endif /* _LINUX_GETOPT_H */

fs/ncpfs/inode.c

@@ -31,7 +31,10 @@
 
 #include <linux/ncp_fs.h>
 
+#include <net/sock.h>
+
 #include "ncplib_kernel.h"
+#include "getopt.h"
 
 static void ncp_delete_inode(struct inode *);
 static void ncp_put_super(struct super_block *);
@@ -283,6 +286,103 @@ ncp_delete_inode(struct inode *inode)
 	clear_inode(inode);
 }
 
+static void ncp_stop_tasks(struct ncp_server *server) {
+	struct sock* sk = server->ncp_sock->sk;
+		
+	sk->error_report = server->error_report;
+	sk->data_ready = server->data_ready;
+	sk->write_space = server->write_space;
+	del_timer_sync(&server->timeout_tm);
+	flush_scheduled_tasks();
+}
+
+static const struct ncp_option ncp_opts[] = {
+	{ "uid",	OPT_INT,	'u' },
+	{ "gid",	OPT_INT,	'g' },
+	{ "owner",	OPT_INT,	'o' },
+	{ "mode",	OPT_INT,	'm' },
+	{ "dirmode",	OPT_INT,	'd' },
+	{ "timeout",	OPT_INT,	't' },
+	{ "retry",	OPT_INT,	'r' },
+	{ "flags",	OPT_INT,	'f' },
+	{ "wdogpid",	OPT_INT,	'w' },
+	{ "ncpfd",	OPT_INT,	'n' },
+	{ "infofd",	OPT_INT,	'i' },	/* v5 */
+	{ "version",	OPT_INT,	'v' },
+	{ NULL,		0,		0 } };
+
+static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
+	int optval;
+	char *optarg;
+	unsigned long optint;
+	int version = 0;
+
+	data->flags = 0;
+	data->int_flags = 0;
+	data->mounted_uid = 0;
+	data->wdog_pid = -1;
+	data->ncp_fd = ~0;
+	data->time_out = 10;
+	data->retry_count = 20;
+	data->uid = 0;
+	data->gid = 0;
+	data->file_mode = 0600;
+	data->dir_mode = 0700;
+	data->info_fd = -1;
+	data->mounted_vol[0] = 0;
+	
+	while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
+		if (optval < 0)
+			return optval;
+		switch (optval) {
+			case 'u':
+				data->uid = optint;
+				break;
+			case 'g':
+				data->gid = optint;
+				break;
+			case 'o':
+				data->mounted_uid = optint;
+				break;
+			case 'm':
+				data->file_mode = optint;
+				break;
+			case 'd':
+				data->dir_mode = optint;
+				break;
+			case 't':
+				data->time_out = optint;
+				break;
+			case 'r':
+				data->retry_count = optint;
+				break;
+			case 'f':
+				data->flags = optint;
+				break;
+			case 'w':
+				data->wdog_pid = optint;
+				break;
+			case 'n':
+				data->ncp_fd = optint;
+				break;
+			case 'i':
+				data->info_fd = optint;
+				break;
+			case 'v':
+				if (optint < NCP_MOUNT_VERSION_V4) {
+					return -ECHRNG;
+				}
+				if (optint > NCP_MOUNT_VERSION_V5) {
+					return -ECHRNG;
+				}
+				version = optint;
+				break;
+			
+		}
+	}
+	return 0;
+}
+
 static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 {
 	struct ncp_mount_data_kernel data;
@@ -323,6 +423,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 				data.gid = md->gid;
 				data.file_mode = md->file_mode;
 				data.dir_mode = md->dir_mode;
+				data.info_fd = -1;
 				memcpy(data.mounted_vol, md->mounted_vol,
 					NCP_VOLNAME_LEN+1);
 			}
@@ -342,12 +443,18 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 				data.gid = md->gid;
 				data.file_mode = md->file_mode;
 				data.dir_mode = md->dir_mode;
+				data.info_fd = -1;
 				data.mounted_vol[0] = 0;
 			}
 			break;
 		default:
 			error = -ECHRNG;
-			goto out;
+			if (*(__u32*)raw_data == cpu_to_be32(0x76657273)) {
+				error = ncp_parse_options(&data, raw_data);
+			}
+			if (error)
+				goto out;
+			break;
 	}
 	error = -EBADF;
 	ncp_filp = fget(data.ncp_fd);
@@ -376,6 +483,28 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 	memset(server, 0, sizeof(*server));
 
 	server->ncp_filp = ncp_filp;
+	server->ncp_sock = sock;
+	
+	if (data.info_fd != -1) {
+		struct socket *info_sock;
+
+		error = -EBADF;
+		server->info_filp = fget(data.info_fd);
+		if (!server->info_filp)
+			goto out_fput;
+		error = -ENOTSOCK;
+		sock_inode = server->info_filp->f_dentry->d_inode;
+		if (!S_ISSOCK(sock_inode->i_mode))
+			goto out_fput2;
+		info_sock = SOCKET_I(sock_inode);
+		if (!info_sock)
+			goto out_fput2;
+		error = -EBADFD;
+		if (info_sock->type != SOCK_STREAM)
+			goto out_fput2;
+		server->info_sock = info_sock;
+	}
+
 /*	server->lock = 0;	*/
 	init_MUTEX(&server->sem);
 	server->packet = NULL;
@@ -413,6 +542,16 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 
 	server->dentry_ttl = 0;	/* no caching */
 
+	INIT_LIST_HEAD(&server->tx.requests);
+	init_MUTEX(&server->rcv.creq_sem);
+	server->tx.creq = NULL;
+	server->rcv.creq = NULL;
+	server->data_ready = sock->sk->data_ready;
+	server->write_space = sock->sk->write_space;
+	server->error_report = sock->sk->error_report;
+	sock->sk->user_data = server;
+
+	init_timer(&server->timeout_tm);
 #undef NCP_PACKET_SIZE
 #define NCP_PACKET_SIZE 131072
 	error = -ENOMEM;
@@ -421,6 +560,22 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 	if (server->packet == NULL)
 		goto out_nls;
 
+	sock->sk->data_ready = ncp_tcp_data_ready;
+	sock->sk->error_report = ncp_tcp_error_report;
+	if (sock->type == SOCK_STREAM) {
+		server->rcv.ptr = (unsigned char*)&server->rcv.buf;
+		server->rcv.len = 10;
+		server->rcv.state = 0;
+		INIT_TQUEUE(&server->rcv.tq, ncp_tcp_rcv_proc, server);
+		INIT_TQUEUE(&server->tx.tq, ncp_tcp_tx_proc, server);
+		sock->sk->write_space = ncp_tcp_write_space;
+	} else {
+		INIT_TQUEUE(&server->rcv.tq, ncpdgram_rcv_proc, server);
+		INIT_TQUEUE(&server->timeout_tq, ncpdgram_timeout_proc, server);
+		server->timeout_tm.data = (unsigned long)server;
+		server->timeout_tm.function = ncpdgram_timeout_call;
+	}
+
 	ncp_lock_server(server);
 	error = ncp_connect(server);
 	ncp_unlock_server(server);
@@ -495,12 +650,16 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 	ncp_disconnect(server);
 	ncp_unlock_server(server);
 out_packet:
+	ncp_stop_tasks(server);
 	vfree(server->packet);
 out_nls:
 #ifdef CONFIG_NCPFS_NLS
 	unload_nls(server->nls_io);
 	unload_nls(server->nls_vol);
 #endif
+out_fput2:
+	if (server->info_filp)
+		fput(server->info_filp);
 out_fput:
 	/* 23/12/1998 Marcin Dalecki <dalecki@cs.net.pl>:
 	 * 
@@ -522,6 +681,8 @@ static void ncp_put_super(struct super_block *sb)
 	ncp_disconnect(server);
 	ncp_unlock_server(server);
 
+	ncp_stop_tasks(server);
+
 #ifdef CONFIG_NCPFS_NLS
 	/* unload the NLS charsets */
 	if (server->nls_vol)
@@ -536,6 +697,8 @@ static void ncp_put_super(struct super_block *sb)
 	}
 #endif /* CONFIG_NCPFS_NLS */
 
+	if (server->info_filp)
+		fput(server->info_filp);
 	fput(server->ncp_filp);
 	kill_proc(server->m.wdog_pid, SIGTERM, 1);
 

fs/ncpfs/ioctl.c

@@ -424,7 +424,7 @@ int ncp_ioctl(struct inode *inode, struct file *filp,
 			if (user.object_name_len) {
 				newname = ncp_kmalloc(user.object_name_len, GFP_USER);
 				if (!newname) return -ENOMEM;
-				if (copy_from_user(newname, user.object_name, sizeof(user))) {
+				if (copy_from_user(newname, user.object_name, user.object_name_len)) {
 					ncp_kfree_s(newname, user.object_name_len);
 					return -EFAULT;
 				}

fs/ncpfs/ncplib_kernel.c

@@ -341,6 +341,7 @@ void ncp_extract_file_info(void *structure, struct nw_info_struct *target)
 	target->nameLen = *name_len;
 	memcpy(target->entryName, name_len + 1, *name_len);
 	target->entryName[*name_len] = '\0';
+	target->volNumber = le32_to_cpu(target->volNumber);
 	return;
 }
 
@@ -475,7 +476,7 @@ ncp_get_known_namespace(struct ncp_server *server, __u8 volume)
 	}
 
 	result = NW_NS_DOS;
-	no_namespaces = ncp_reply_word(server, 0);
+	no_namespaces = le16_to_cpu(ncp_reply_word(server, 0));
 	namespace = ncp_reply_data(server, 2);
 
 	while (no_namespaces > 0) {

fs/ncpfs/ncpsign_kernel.c

@@ -93,19 +93,35 @@ static void nwsign(char *r_data1, char *r_data2, char *outdata) {
 
 /* Make a signature for the current packet and add it at the end of the */
 /* packet. */
-void sign_packet(struct ncp_server *server, int *size) {
- char data[64];
+void __sign_packet(struct ncp_server *server, const char *packet, size_t size, __u32 totalsize, void *sign_buff) {
+	unsigned char data[64];
 
- memset(data,0,64);
- memcpy(data,server->sign_root,8);
- PUT_LE32(data+8,(*size));
- memcpy(data+12,server->packet+sizeof(struct ncp_request_header)-1,
-  min_t(unsigned int,(*size)-sizeof(struct ncp_request_header)+1,52));
+	memcpy(data, server->sign_root, 8);
+	*(__u32*)(data + 8) = totalsize;
+	if (size < 52) {
+		memcpy(data + 12, packet, size);
+		memset(data + 12 + size, 0, 52 - size);
+	} else {
+		memcpy(data + 12, packet, 52);
+	}
+	nwsign(server->sign_last, data, server->sign_last);
+	memcpy(sign_buff, server->sign_last, 8);
+}
 
- nwsign(server->sign_last,data,server->sign_last);
+int sign_verify_reply(struct ncp_server *server, const char *packet, size_t size, __u32 totalsize, const void *sign_buff) {
+	unsigned char data[64];
+	unsigned char hash[16];
 
- memcpy(server->packet+(*size),server->sign_last,8);
- (*size)+=8;
+	memcpy(data, server->sign_root, 8);
+	*(__u32*)(data + 8) = totalsize;
+	if (size < 52) {
+		memcpy(data + 12, packet, size);
+		memset(data + 12 + size, 0, 52 - size);
+	} else {
+		memcpy(data + 12, packet, 52);
+	}
+	nwsign(server->sign_last, data, hash);
+	return memcmp(sign_buff, hash, 8);
 }
 
 #endif	/* CONFIG_NCPFS_PACKET_SIGNING */

fs/ncpfs/ncpsign_kernel.h

@@ -10,6 +10,19 @@
 
 #include <linux/ncp_fs.h>
 
-void sign_packet(struct ncp_server *server, int *size);
+#ifdef CONFIG_NCPFS_PACKET_SIGNING
+void __sign_packet(struct ncp_server *server, const char *data, size_t size, __u32 totalsize, void *sign_buff);
+int sign_verify_reply(struct ncp_server *server, const char *data, size_t size, __u32 totalsize, const void *sign_buff);
+#endif
+
+static inline size_t sign_packet(struct ncp_server *server, const char *data, size_t size, __u32 totalsize, void *sign_buff) {
+#ifdef CONFIG_NCPFS_PACKET_SIGNING
+	if (server->sign_active) {
+		__sign_packet(server, data, size, totalsize, sign_buff);
+		return 8;
+	}
+#endif
+	return 0;
+}
 
 #endif

include/linux/ncp.h

@@ -30,6 +30,7 @@ struct ncp_request_header {
 };
 
 #define NCP_REPLY                (0x3333)
+#define NCP_WATCHDOG		 (0x3E3E)
 #define NCP_POSITIVE_ACK         (0x9999)
 
 struct ncp_reply_header {

include/linux/ncp_fs_sb.h

@@ -13,6 +13,8 @@
 
 #ifdef __KERNEL__
 
+#include <linux/tqueue.h>
+
 #define NCP_DEFAULT_OPTIONS 0		/* 2 for packet signatures */
 
 struct ncp_server {
@@ -24,6 +26,9 @@ struct ncp_server {
 	__u8 name_space[NCP_NUMBER_OF_VOLUMES + 2];
 
 	struct file *ncp_filp;	/* File pointer to ncp socket */
+	struct socket *ncp_sock;/* ncp socket */
+	struct file *info_filp;
+	struct socket *info_sock;
 
 	u8 sequence;
 	u8 task;
@@ -79,8 +84,54 @@ struct ncp_server {
 
 	/* miscellaneous */
 	unsigned int flags;
+
+	spinlock_t requests_lock;	/* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */
+
+	void (*data_ready)(struct sock* sk, int len);
+	void (*error_report)(struct sock* sk);
+	void (*write_space)(struct sock* sk);	/* STREAM mode only */
+	struct {
+		struct tq_struct tq;		/* STREAM/DGRAM: data/error ready */
+		struct ncp_request_reply* creq;	/* STREAM/DGRAM: awaiting reply from this request */
+		struct semaphore creq_sem;	/* DGRAM only: lock accesses to rcv.creq */
+
+		unsigned int state;		/* STREAM only: receiver state */
+		struct {
+			__u32 magic __attribute__((packed));
+			__u32 len __attribute__((packed));
+			__u16 type __attribute__((packed));
+			__u16 p1 __attribute__((packed));
+			__u16 p2 __attribute__((packed));
+			__u16 p3 __attribute__((packed));
+			__u16 type2 __attribute__((packed));
+		} buf;				/* STREAM only: temporary buffer */
+		unsigned char* ptr;		/* STREAM only: pointer to data */
+		size_t len;			/* STREAM only: length of data to receive */
+	} rcv;
+	struct {
+		struct list_head requests;	/* STREAM only: queued requests */
+		struct tq_struct tq;		/* STREAM only: transmitter ready */
+		struct ncp_request_reply* creq;	/* STREAM only: currently transmitted entry */
+	} tx;
+	struct timer_list timeout_tm;		/* DGRAM only: timeout timer */
+	struct tq_struct timeout_tq;		/* DGRAM only: associated queue, we run timers from process context */
+	int timeout_last;			/* DGRAM only: current timeout length */
+	int timeout_retries;			/* DGRAM only: retries left */
+	struct {
+		size_t len;
+		__u8 data[128];
+	} unexpected_packet;
 };
 
+extern void ncp_tcp_rcv_proc(void *server);
+extern void ncp_tcp_tx_proc(void *server);
+extern void ncpdgram_rcv_proc(void *server);
+extern void ncpdgram_timeout_proc(void *server);
+extern void ncpdgram_timeout_call(unsigned long server);
+extern void ncp_tcp_data_ready(struct sock* sk, int len);
+extern void ncp_tcp_write_space(struct sock* sk);
+extern void ncp_tcp_error_report(struct sock* sk);
+
 #define NCP_FLAG_UTF8	1
 
 #define NCP_CLR_FLAG(server, flag)	((server)->flags &= ~(flag))

include/linux/ncp_mount.h

@@ -11,7 +11,7 @@
 #include <linux/types.h>
 #include <linux/ncp.h>
 
-#define NCP_MOUNT_VERSION 3
+#define NCP_MOUNT_VERSION 3	/* Binary */
 
 /* Values for flags */
 #define NCP_MOUNT_SOFT		0x0001
@@ -41,7 +41,7 @@ struct ncp_mount_data {
 	__kernel_mode_t dir_mode;
 };
 
-#define NCP_MOUNT_VERSION_V4	(4)
+#define NCP_MOUNT_VERSION_V4	(4)	/* Binary or text */
 
 struct ncp_mount_data_v4 {
 	int version;
@@ -66,6 +66,8 @@ struct ncp_mount_data_v4 {
 	unsigned long dir_mode;
 };
 
+#define NCP_MOUNT_VERSION_V5	(5)	/* Text only */
+
 #ifdef __KERNEL__
 
 struct ncp_mount_data_kernel {
@@ -83,6 +85,7 @@ struct ncp_mount_data_kernel {
 	__kernel_gid32_t gid;
 	__kernel_mode_t  file_mode;
 	__kernel_mode_t  dir_mode;
+	int		 info_fd;
 };
 
 #endif /* __KERNEL__ */