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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [fs/] [ncpfs/] [inode.c] - Blame information for rev 1777

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/*
 *  inode.c
 *
 *  Copyright (C) 1995, 1996 by Volker Lendecke
 *
 */
 
#include <linux/module.h>
#include <linux/config.h>
 
#include <asm/system.h>
#include <asm/segment.h>
 
#include <linux/sched.h>
#include <linux/ncp_fs.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/stat.h>
#include <linux/errno.h>
#include <linux/locks.h>
#include <linux/fcntl.h>
#include <linux/malloc.h>
#ifdef CONFIG_KERNELD
#include <linux/kerneld.h>
#endif
#include "ncplib_kernel.h"
 
extern int close_fp(struct file *filp);
 
static void ncp_put_inode(struct inode *);
static void ncp_read_inode(struct inode *);
static void ncp_put_super(struct super_block *);
static void ncp_statfs(struct super_block *sb, struct statfs *buf, int bufsiz);
 
static struct super_operations ncp_sops = {
        ncp_read_inode,         /* read inode */
        ncp_notify_change,      /* notify change */
        NULL,                   /* write inode */
        ncp_put_inode,          /* put inode */
        ncp_put_super,          /* put superblock */
        NULL,                   /* write superblock */
        ncp_statfs,             /* stat filesystem */
        NULL
};
 
/* ncp_read_inode: Called from iget, it only traverses the allocated
   ncp_inode_info's and initializes the inode from the data found
   there.  It does not allocate or deallocate anything. */
 
static void
ncp_read_inode(struct inode *inode)
{
        /* Our task should be extremely simple here. We only have to
           look up the information somebody else (ncp_iget) put into
           the inode tree. The address of this information is the
           inode->i_ino. Just to make sure everything went well, we
           check it's there. */
 
        struct ncp_inode_info *inode_info = ncp_find_inode(inode);
 
        if (inode_info == NULL)
        {
                /* Ok, now we're in trouble. The inode info is not there. What
                   should we do now??? */
                printk("ncp_read_inode: inode info not found\n");
                return;
        }
 
        inode_info->state = NCP_INODE_VALID;
 
        NCP_INOP(inode) = inode_info;
        inode_info->inode = inode;
 
        if (NCP_ISTRUCT(inode)->attributes & aDIR)
        {
                inode->i_mode = NCP_SERVER(inode)->m.dir_mode;
                /* for directories dataStreamSize seems to be some
                   Object ID ??? */
                inode->i_size = 512;
        }
        else
        {
                inode->i_mode = NCP_SERVER(inode)->m.file_mode;
#if 1
                if (NCP_ISTRUCT(inode)->attributes & /* 0x60001 incl. DiRi */ 1) inode->i_mode &= ~0222;
#endif
                inode->i_size = NCP_ISTRUCT(inode)->dataStreamSize;
        }
 
        DDPRINTK("ncp_read_inode: inode->i_mode = %u\n", inode->i_mode);
 
        inode->i_nlink   = 1;
        inode->i_uid     = NCP_SERVER(inode)->m.uid;
        inode->i_gid     = NCP_SERVER(inode)->m.gid;
        inode->i_blksize = 512;
        inode->i_rdev    = 0;
 
        if ((inode->i_blksize != 0) && (inode->i_size != 0))
        {
                inode->i_blocks =
                        (inode->i_size - 1) / inode->i_blksize + 1;
        }
        else
        {
                inode->i_blocks = 0;
        }
 
        inode->i_mtime = ncp_date_dos2unix(NCP_ISTRUCT(inode)->modifyTime,
                                           NCP_ISTRUCT(inode)->modifyDate);
        inode->i_ctime = ncp_date_dos2unix(NCP_ISTRUCT(inode)->creationTime,
                                           NCP_ISTRUCT(inode)->creationDate);
        inode->i_atime = ncp_date_dos2unix(0,
                                           NCP_ISTRUCT(inode)->lastAccessDate);
 
        if (S_ISREG(inode->i_mode))
        {
                inode->i_op = &ncp_file_inode_operations;
        }
        else if (S_ISDIR(inode->i_mode))
        {
                inode->i_op = &ncp_dir_inode_operations;
        }
        else
        {
                inode->i_op = NULL;
        }
}
 
/*
 * Defer release of inode_info and file_info structures until the inode
 * has been cleared.  This avoids a race condition allowing the inode to
 * be put back in use before being cleared. Also, temporarily increment
 * i_count after clear_inode() so that the inode can't be reused.
 */
static void
ncp_put_inode(struct inode *inode)
{
        struct super_block      *sb     = inode->i_sb;
        struct ncp_server       *server = NCP_SERVER(inode);
        struct ncp_inode_info   *iinfo  = NCP_INOP(inode);
        struct nw_file_info     *finfo  = NCP_FINFO(inode);
 
        /*
         * This operation may block, so we lock before checking the count.
         */
        lock_super(sb);
 
        if (inode->i_count > 1)
        {
                printk("ncp_put_inode: inode in use device %s, inode %ld, count=%ld\n",
                       kdevname(inode->i_dev), inode->i_ino, inode->i_count);
                goto unlock;
        }
 
        DDPRINTK("ncp_put_inode: put %s\n",
                 finfo->i.entryName);
        /*
         * This operation should never block.
         */
        if (S_ISDIR(inode->i_mode))
        {
                DDPRINTK("ncp_put_inode: put directory %ld\n",
                         inode->i_ino);
                ncp_invalid_dir_cache(inode);
        }
 
        clear_inode(inode);
 
        /*
         * After clearing the inode i_count will be 0 in 2.0.xx kernels.
         * To keep the inode from being reused as free if we block while
         * closing the file, increment i_count temporarily.
         */
        inode->i_count++;
 
        if (finfo->opened != 0)
        {
                if (ncp_close_file(server, finfo->file_handle) != 0)
                {
                        /* We can't do anything but complain. */
                        printk("ncp_put_inode: could not close %s\n",
                                finfo->i.entryName);
                }
        }
 
        ncp_free_inode_info(iinfo);
        inode->i_count--;
 
unlock:
        unlock_super(sb);
}
 
struct super_block *
ncp_read_super(struct super_block *sb, void *raw_data, int silent)
{
        struct ncp_mount_data *data = (struct ncp_mount_data *) raw_data;
        struct ncp_server *server;
        struct file *ncp_filp;
        struct file *wdog_filp;
        struct file *msg_filp;
        kdev_t dev = sb->s_dev;
        int error;
#ifdef CONFIG_NCPFS_PACKET_SIGNING
        int options;
#endif
 
        if (data == NULL)
        {
                printk("ncp_read_super: missing data argument\n");
                sb->s_dev = 0;
                return NULL;
        }
 
        if (data->version != NCP_MOUNT_VERSION)
        {
                printk("ncp warning: mount version %s than kernel\n",
                       (data->version < NCP_MOUNT_VERSION) ?
                       "older" : "newer");
                sb->s_dev = 0;
                return NULL;
        }
 
        if (   (data->ncp_fd >= NR_OPEN)
            || ((ncp_filp = current->files->fd[data->ncp_fd]) == NULL)
            || (!S_ISSOCK(ncp_filp->f_inode->i_mode)))
        {
                printk("ncp_read_super: invalid ncp socket\n");
                sb->s_dev = 0;
                return NULL;
        }
 
        if (   (data->wdog_fd >= NR_OPEN)
            || ((wdog_filp = current->files->fd[data->wdog_fd]) == NULL)
            || (!S_ISSOCK(wdog_filp->f_inode->i_mode)))
        {
                printk("ncp_read_super: invalid wdog socket\n");
                sb->s_dev = 0;
                return NULL;
        }
 
        if (   (data->message_fd >= NR_OPEN)
            || ((msg_filp = current->files->fd[data->message_fd]) == NULL)
            || (!S_ISSOCK(msg_filp->f_inode->i_mode)))
        {
                printk("ncp_read_super: invalid wdog socket\n");
                sb->s_dev = 0;
                return NULL;
        }
 
        /* We must malloc our own super-block info */
        server = (struct ncp_server *)ncp_kmalloc(sizeof(struct ncp_server),
                                                   GFP_KERNEL);
 
        if (server == NULL)
        {
                printk("ncp_read_super: could not alloc ncp_server\n");
                return NULL;
        }
 
        ncp_filp->f_count += 1;
        wdog_filp->f_count += 1;
        msg_filp->f_count += 1;
 
        lock_super(sb);
 
        NCP_SBP(sb) = server;
 
        sb->s_blocksize = 1024; /* Eh...  Is this correct? */
        sb->s_blocksize_bits = 10;
        sb->s_magic = NCP_SUPER_MAGIC;
        sb->s_dev = dev;
        sb->s_op = &ncp_sops;
 
        server->ncp_filp    = ncp_filp;
        server->wdog_filp   = wdog_filp;
        server->msg_filp    = msg_filp;
        server->lock        = 0;
        server->wait        = NULL;
        server->packet      = NULL;
        server->buffer_size = 0;
        server->conn_status = 0;
#ifdef CONFIG_NCPFS_PACKET_SIGNING
        server->sign_wanted = 0;
        server->sign_active = 0;
#endif
        server->m = *data;
        server->m.file_mode = (server->m.file_mode &
                               (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
        server->m.dir_mode  = (server->m.dir_mode &
                               (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
 
        /* protect against invalid mount points */
        server->m.mount_point[sizeof(server->m.mount_point)-1] = '\0';
 
        server->packet_size = NCP_PACKET_SIZE;
        server->packet      = ncp_kmalloc(NCP_PACKET_SIZE, GFP_KERNEL);
 
        if (server->packet == NULL)
        {
                printk("ncpfs: could not alloc packet\n");
                error = -ENOMEM;
                unlock_super(sb);
                goto fail;
        }
 
        /*
         * Make the connection to the server
         */
 
        if (ncp_catch_watchdog(server) != 0)
        {
                printk("ncp_read_super: Could not catch watchdog\n");
                error = -EINVAL;
                unlock_super(sb);
                goto fail;
        }
 
        if (ncp_catch_message(server) != 0)
        {
                printk("ncp_read_super: Could not catch messages\n");
                ncp_dont_catch_watchdog(server);
                error = -EINVAL;
                unlock_super(sb);
                goto fail;
        }
 
        ncp_lock_server(server);
        error = ncp_connect(server);
        ncp_unlock_server(server);
        unlock_super(sb);
 
        if (error < 0)
        {
                sb->s_dev = 0;
                printk("ncp_read_super: Failed connection, bailing out "
                       "(error = %d).\n", -error);
                ncp_kfree_s(server->packet, server->packet_size);
                ncp_dont_catch_watchdog(server);
                goto fail;
        }
 
        DPRINTK("ncp_read_super: NCP_SBP(sb) = %x\n", (int)NCP_SBP(sb));
 
        ncp_init_root(server);
 
        if (!(sb->s_mounted = iget(sb, ncp_info_ino(server, &(server->root)))))
        {
                sb->s_dev = 0;
                printk("ncp_read_super: get root inode failed\n");
                goto disconnect;
        }
 
#ifdef CONFIG_NCPFS_PACKET_SIGNING
        if (ncp_negotiate_size_and_options(server, NCP_DEFAULT_BUFSIZE,
                NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
        {
                if (options != NCP_DEFAULT_OPTIONS)
                {
                        if (ncp_negotiate_size_and_options(server,
                                NCP_DEFAULT_BUFSIZE,
                                options & 2,
                                &(server->buffer_size), &options) != 0)
 
                        {
                                sb->s_dev = 0;
                                printk("ncp_read_super: "
                                        "could not set options\n");
                                goto disconnect;
                        }
                }
                if (options & 2)
                        server->sign_wanted = 1;
        }
        else
#endif  /* CONFIG_NCPFS_PACKET_SIGNING */
        if (ncp_negotiate_buffersize(server, NCP_DEFAULT_BUFSIZE,
                                     &(server->buffer_size)) != 0)
        {
                sb->s_dev = 0;
                printk("ncp_read_super: could not get bufsize\n");
                goto disconnect;
        }
 
        DPRINTK("ncpfs: bufsize = %d\n", server->buffer_size);
 
        MOD_INC_USE_COUNT;
        return sb;
 
 disconnect:
        ncp_lock_server(server);
        ncp_disconnect(server);
        ncp_unlock_server(server);
        ncp_kfree_s(server->packet, server->packet_size);
        ncp_dont_catch_watchdog(server);
 fail:
        ncp_filp->f_count -= 1;
        wdog_filp->f_count -= 1;
        msg_filp->f_count -= 1;
        ncp_kfree_s(NCP_SBP(sb), sizeof(struct ncp_server));
        return NULL;
}
 
static void
ncp_put_super(struct super_block *sb)
{
        struct ncp_server *server = NCP_SBP(sb);
 
        lock_super(sb);
 
        ncp_lock_server(server);
        ncp_disconnect(server);
        ncp_unlock_server(server);
 
        close_fp(server->ncp_filp);
 
        ncp_dont_catch_watchdog(server);
        close_fp(server->wdog_filp);
        close_fp(server->msg_filp);
 
        ncp_free_all_inodes(server);
 
        ncp_kfree_s(server->packet, server->packet_size);
 
        sb->s_dev = 0;
        ncp_kfree_s(NCP_SBP(sb), sizeof(struct ncp_server));
        NCP_SBP(sb) = NULL;
 
        unlock_super(sb);
 
        MOD_DEC_USE_COUNT;
}
 
/* This routine is called from an interrupt in ncp_msg_data_ready. So
 * we have to be careful NOT to sleep here! */
void
ncp_trigger_message(struct ncp_server *server)
{
#ifdef CONFIG_KERNELD
        char command[ sizeof(server->m.mount_point)
                     + sizeof(NCP_MSG_COMMAND) + 2];
#endif
 
        if (server == NULL)
        {
                printk("ncp_trigger_message: invalid server!\n");
                return;
        }
 
        DPRINTK("ncp_trigger_message: on %s\n",
                server->m.mount_point);
 
#ifdef CONFIG_KERNELD
        strcpy(command, NCP_MSG_COMMAND);
        strcat(command, " ");
        strcat(command, server->m.mount_point);
        DPRINTK("ksystem: %s\n", command);
        ksystem(command, KERNELD_NOWAIT);
#endif
}
 
static void
ncp_statfs(struct super_block *sb, struct statfs *buf, int bufsiz)
{
        struct statfs tmp;
 
        /* We cannot say how much disk space is left on a mounted
           NetWare Server, because free space is distributed over
           volumes, and the current user might have disk quotas. So
           free space is not that simple to determine. Our decision
           here is to err conservatively. */
 
        tmp.f_type = NCP_SUPER_MAGIC;
        tmp.f_bsize = 512;
        tmp.f_blocks = 0;
        tmp.f_bfree = 0;
        tmp.f_bavail = 0;
        tmp.f_files = -1;
        tmp.f_ffree = -1;
        tmp.f_namelen = 12;
        memcpy_tofs(buf, &tmp, bufsiz);
}
 
int
ncp_notify_change(struct inode *inode, struct iattr *attr)
{
        int result = 0;
        int info_mask;
        struct nw_modify_dos_info info;
 
        if (!ncp_conn_valid(NCP_SERVER(inode)))
        {
                return -EIO;
        }
 
        if ((result = inode_change_ok(inode, attr)) < 0)
                return result;
 
        if (((attr->ia_valid & ATTR_UID) &&
             (attr->ia_uid != NCP_SERVER(inode)->m.uid)))
                return -EPERM;
 
        if (((attr->ia_valid & ATTR_GID) &&
             (attr->ia_uid != NCP_SERVER(inode)->m.gid)))
                return -EPERM;
 
        if (((attr->ia_valid & ATTR_MODE) &&
             (attr->ia_mode &
              ~(S_IFREG | S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO))))
                return -EPERM;
 
        info_mask = 0;
        memset(&info, 0, sizeof(info));
 
#if 1 
        if ((attr->ia_valid & ATTR_MODE) != 0)
        {
                if (NCP_ISTRUCT(inode)->attributes & aDIR)
                {
                        return -EPERM;
                }
                else
                {
                        umode_t newmode;
 
                        info_mask |= DM_ATTRIBUTES;
                        newmode=attr->ia_mode;
                        newmode &= NCP_SERVER(inode)->m.file_mode;
 
                        if (newmode & 0222) /* any write bit set */
                        {
                                info.attributes &= ~0x60001;
                        }
                        else
                        {
                                info.attributes |= 0x60001;
                        }
                }
        }
#endif
 
        if ((attr->ia_valid & ATTR_CTIME) != 0)
        {
                info_mask |= (DM_CREATE_TIME|DM_CREATE_DATE);
                ncp_date_unix2dos(attr->ia_ctime,
                                  &(info.creationTime), &(info.creationDate));
        }
 
        if ((attr->ia_valid & ATTR_MTIME) != 0)
        {
                info_mask |= (DM_MODIFY_TIME|DM_MODIFY_DATE);
                ncp_date_unix2dos(attr->ia_mtime,
                                  &(info.modifyTime), &(info.modifyDate));
        }
 
        if ((attr->ia_valid & ATTR_ATIME) != 0)
        {
                __u16 dummy;
                info_mask |= (DM_LAST_ACCESS_DATE);
                ncp_date_unix2dos(attr->ia_ctime,
                                  &(dummy), &(info.lastAccessDate));
        }
 
        if (info_mask != 0)
        {
                if ((result =
                     ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
                                                        NCP_ISTRUCT(inode),
                                                        info_mask,
                                                        &info)) != 0)
                {
                        result = -EACCES;
 
                        if (info_mask == (DM_CREATE_TIME|DM_CREATE_DATE))
                        {
                                /* NetWare seems not to allow this. I
                                   do not know why. So, just tell the
                                   user everything went fine. This is
                                   a terrible hack, but I do not know
                                   how to do this correctly. */
                                result = 0;
                        }
                }
        }
 
        if ((attr->ia_valid & ATTR_SIZE) != 0)
        {
                int written;
 
                DPRINTK("ncpfs: trying to change size of %s to %ld\n",
                        NCP_ISTRUCT(inode)->entryName, attr->ia_size);
 
                if ((result = ncp_make_open(inode, O_RDWR)) < 0)
                {
                        return -EACCES;
                }
 
                ncp_write(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
                          attr->ia_size, 0, "", &written);
 
                /* According to ndir, the changes only take effect after
                   closing the file */
                ncp_close_file(NCP_SERVER(inode),
                               NCP_FINFO(inode)->file_handle);
                NCP_FINFO(inode)->opened = 0;
 
                result = 0;
        }
 
        ncp_invalid_dir_cache(NCP_INOP(inode)->dir->inode);
 
        return result;
}
 
#ifdef DEBUG_NCP_MALLOC
int ncp_malloced;
int ncp_current_malloced;
#endif
 
static struct file_system_type ncp_fs_type = {
        ncp_read_super, "ncpfs", 0, NULL
        };
 
int init_ncp_fs(void)
{
        return register_filesystem(&ncp_fs_type);
}
 
#ifdef MODULE
int
init_module( void)
{
        int status;
 
        DPRINTK("ncpfs: init_module called\n");
 
#ifdef DEBUG_NCP_MALLOC
        ncp_malloced = 0;
        ncp_current_malloced = 0;
#endif
        ncp_init_dir_cache();
 
        if ((status = init_ncp_fs()) == 0)
                register_symtab(0);
        return status;
}
 
void
cleanup_module(void)
{
        DPRINTK("ncpfs: cleanup_module called\n");
        ncp_free_dir_cache();
        unregister_filesystem(&ncp_fs_type);
#ifdef DEBUG_NCP_MALLOC
        printk("ncp_malloced: %d\n", ncp_malloced);
        printk("ncp_current_malloced: %d\n", ncp_current_malloced);
#endif
}
 
#endif

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [fs/] [ncpfs/] [inode.c] - Blame information for rev 1777

Line No.	Rev	Author	Line
1	1628	jcastillo	`/*`
2			`* inode.c`
3			`*`
4			`* Copyright (C) 1995, 1996 by Volker Lendecke`
5			`*`
6			`*/`
7
8			`#include <linux/module.h>`
9			`#include <linux/config.h>`
10
11			`#include <asm/system.h>`
12			`#include <asm/segment.h>`
13
14			`#include <linux/sched.h>`
15			`#include <linux/ncp_fs.h>`
16			`#include <linux/kernel.h>`
17			`#include <linux/mm.h>`
18			`#include <linux/string.h>`
19			`#include <linux/stat.h>`
20			`#include <linux/errno.h>`
21			`#include <linux/locks.h>`
22			`#include <linux/fcntl.h>`
23			`#include <linux/malloc.h>`
24			`#ifdef CONFIG_KERNELD`
25			`#include <linux/kerneld.h>`
26			`#endif`
27			`#include "ncplib_kernel.h"`
28
29			`extern int close_fp(struct file *filp);`
30
31			`static void ncp_put_inode(struct inode *);`
32			`static void ncp_read_inode(struct inode *);`
33			`static void ncp_put_super(struct super_block *);`
34			`static void ncp_statfs(struct super_block sb, struct statfs buf, int bufsiz);`
35
36			`static struct super_operations ncp_sops = {`
37			`ncp_read_inode, /* read inode */`
38			`ncp_notify_change, /* notify change */`
39			`NULL, /* write inode */`
40			`ncp_put_inode, /* put inode */`
41			`ncp_put_super, /* put superblock */`
42			`NULL, /* write superblock */`
43			`ncp_statfs, /* stat filesystem */`
44			`NULL`
45			`};`
46
47			`/* ncp_read_inode: Called from iget, it only traverses the allocated`
48			`ncp_inode_info's and initializes the inode from the data found`
49			`there. It does not allocate or deallocate anything. */`
50
51			`static void`
52			`ncp_read_inode(struct inode *inode)`
53			`{`
54			`/* Our task should be extremely simple here. We only have to`
55			`look up the information somebody else (ncp_iget) put into`
56			`the inode tree. The address of this information is the`
57			`inode->i_ino. Just to make sure everything went well, we`
58			`check it's there. */`
59
60			`struct ncp_inode_info *inode_info = ncp_find_inode(inode);`
61
62			`if (inode_info == NULL)`
63			`{`
64			`/* Ok, now we're in trouble. The inode info is not there. What`
65			`should we do now??? */`
66			`printk("ncp_read_inode: inode info not found\n");`
67			`return;`
68			`}`
69
70			`inode_info->state = NCP_INODE_VALID;`
71
72			`NCP_INOP(inode) = inode_info;`
73			`inode_info->inode = inode;`
74
75			`if (NCP_ISTRUCT(inode)->attributes & aDIR)`
76			`{`
77			`inode->i_mode = NCP_SERVER(inode)->m.dir_mode;`
78			`/* for directories dataStreamSize seems to be some`
79			`Object ID ??? */`
80			`inode->i_size = 512;`
81			`}`
82			`else`
83			`{`
84			`inode->i_mode = NCP_SERVER(inode)->m.file_mode;`
85			`#if 1`
86			`if (NCP_ISTRUCT(inode)->attributes & /* 0x60001 incl. DiRi */ 1) inode->i_mode &= ~0222;`
87			`#endif`
88			`inode->i_size = NCP_ISTRUCT(inode)->dataStreamSize;`
89			`}`
90
91			`DDPRINTK("ncp_read_inode: inode->i_mode = %u\n", inode->i_mode);`
92
93			`inode->i_nlink = 1;`
94			`inode->i_uid = NCP_SERVER(inode)->m.uid;`
95			`inode->i_gid = NCP_SERVER(inode)->m.gid;`
96			`inode->i_blksize = 512;`
97			`inode->i_rdev = 0;`
98
99			`if ((inode->i_blksize != 0) && (inode->i_size != 0))`
100			`{`
101			`inode->i_blocks =`
102			`(inode->i_size - 1) / inode->i_blksize + 1;`
103			`}`
104			`else`
105			`{`
106			`inode->i_blocks = 0;`
107			`}`
108
109			`inode->i_mtime = ncp_date_dos2unix(NCP_ISTRUCT(inode)->modifyTime,`
110			`NCP_ISTRUCT(inode)->modifyDate);`
111			`inode->i_ctime = ncp_date_dos2unix(NCP_ISTRUCT(inode)->creationTime,`
112			`NCP_ISTRUCT(inode)->creationDate);`
113			`inode->i_atime = ncp_date_dos2unix(0,`
114			`NCP_ISTRUCT(inode)->lastAccessDate);`
115
116			`if (S_ISREG(inode->i_mode))`
117			`{`
118			`inode->i_op = &ncp_file_inode_operations;`
119			`}`
120			`else if (S_ISDIR(inode->i_mode))`
121			`{`
122			`inode->i_op = &ncp_dir_inode_operations;`
123			`}`
124			`else`
125			`{`
126			`inode->i_op = NULL;`
127			`}`
128			`}`
129
130			`/*`
131			`* Defer release of inode_info and file_info structures until the inode`
132			`* has been cleared. This avoids a race condition allowing the inode to`
133			`* be put back in use before being cleared. Also, temporarily increment`
134			`* i_count after clear_inode() so that the inode can't be reused.`
135			`*/`
136			`static void`
137			`ncp_put_inode(struct inode *inode)`
138			`{`
139			`struct super_block *sb = inode->i_sb;`
140			`struct ncp_server *server = NCP_SERVER(inode);`
141			`struct ncp_inode_info *iinfo = NCP_INOP(inode);`
142			`struct nw_file_info *finfo = NCP_FINFO(inode);`
143
144			`/*`
145			`* This operation may block, so we lock before checking the count.`
146			`*/`
147			`lock_super(sb);`
148
149			`if (inode->i_count > 1)`
150			`{`
151			`printk("ncp_put_inode: inode in use device %s, inode %ld, count=%ld\n",`
152			`kdevname(inode->i_dev), inode->i_ino, inode->i_count);`
153			`goto unlock;`
154			`}`
155
156			`DDPRINTK("ncp_put_inode: put %s\n",`
157			`finfo->i.entryName);`
158			`/*`
159			`* This operation should never block.`
160			`*/`
161			`if (S_ISDIR(inode->i_mode))`
162			`{`
163			`DDPRINTK("ncp_put_inode: put directory %ld\n",`
164			`inode->i_ino);`
165			`ncp_invalid_dir_cache(inode);`
166			`}`
167
168			`clear_inode(inode);`
169
170			`/*`
171			`* After clearing the inode i_count will be 0 in 2.0.xx kernels.`
172			`* To keep the inode from being reused as free if we block while`
173			`* closing the file, increment i_count temporarily.`
174			`*/`
175			`inode->i_count++;`
176
177			`if (finfo->opened != 0)`
178			`{`
179			`if (ncp_close_file(server, finfo->file_handle) != 0)`
180			`{`
181			`/* We can't do anything but complain. */`
182			`printk("ncp_put_inode: could not close %s\n",`
183			`finfo->i.entryName);`
184			`}`
185			`}`
186
187			`ncp_free_inode_info(iinfo);`
188			`inode->i_count--;`
189
190			`unlock:`
191			`unlock_super(sb);`
192			`}`
193
194			`struct super_block *`
195			`ncp_read_super(struct super_block sb, void raw_data, int silent)`
196			`{`
197			`struct ncp_mount_data data = (struct ncp_mount_data ) raw_data;`
198			`struct ncp_server *server;`
199			`struct file *ncp_filp;`
200			`struct file *wdog_filp;`
201			`struct file *msg_filp;`
202			`kdev_t dev = sb->s_dev;`
203			`int error;`
204			`#ifdef CONFIG_NCPFS_PACKET_SIGNING`
205			`int options;`
206			`#endif`
207
208			`if (data == NULL)`
209			`{`
210			`printk("ncp_read_super: missing data argument\n");`
211			`sb->s_dev = 0;`
212			`return NULL;`
213			`}`
214
215			`if (data->version != NCP_MOUNT_VERSION)`
216			`{`
217			`printk("ncp warning: mount version %s than kernel\n",`
218			`(data->version < NCP_MOUNT_VERSION) ?`
219			`"older" : "newer");`
220			`sb->s_dev = 0;`
221			`return NULL;`
222			`}`
223
224			`if ( (data->ncp_fd >= NR_OPEN)`
225			`\|\| ((ncp_filp = current->files->fd[data->ncp_fd]) == NULL)`
226			`\|\| (!S_ISSOCK(ncp_filp->f_inode->i_mode)))`
227			`{`
228			`printk("ncp_read_super: invalid ncp socket\n");`
229			`sb->s_dev = 0;`
230			`return NULL;`
231			`}`
232
233			`if ( (data->wdog_fd >= NR_OPEN)`
234			`\|\| ((wdog_filp = current->files->fd[data->wdog_fd]) == NULL)`
235			`\|\| (!S_ISSOCK(wdog_filp->f_inode->i_mode)))`
236			`{`
237			`printk("ncp_read_super: invalid wdog socket\n");`
238			`sb->s_dev = 0;`
239			`return NULL;`
240			`}`
241
242			`if ( (data->message_fd >= NR_OPEN)`
243			`\|\| ((msg_filp = current->files->fd[data->message_fd]) == NULL)`
244			`\|\| (!S_ISSOCK(msg_filp->f_inode->i_mode)))`
245			`{`
246			`printk("ncp_read_super: invalid wdog socket\n");`
247			`sb->s_dev = 0;`
248			`return NULL;`
249			`}`
250
251			`/* We must malloc our own super-block info */`
252			`server = (struct ncp_server *)ncp_kmalloc(sizeof(struct ncp_server),`
253			`GFP_KERNEL);`
254
255			`if (server == NULL)`
256			`{`
257			`printk("ncp_read_super: could not alloc ncp_server\n");`
258			`return NULL;`
259			`}`
260
261			`ncp_filp->f_count += 1;`
262			`wdog_filp->f_count += 1;`
263			`msg_filp->f_count += 1;`
264
265			`lock_super(sb);`
266
267			`NCP_SBP(sb) = server;`
268
269			`sb->s_blocksize = 1024; /* Eh... Is this correct? */`
270			`sb->s_blocksize_bits = 10;`
271			`sb->s_magic = NCP_SUPER_MAGIC;`
272			`sb->s_dev = dev;`
273			`sb->s_op = &ncp_sops;`
274
275			`server->ncp_filp = ncp_filp;`
276			`server->wdog_filp = wdog_filp;`
277			`server->msg_filp = msg_filp;`
278			`server->lock = 0;`
279			`server->wait = NULL;`
280			`server->packet = NULL;`
281			`server->buffer_size = 0;`
282			`server->conn_status = 0;`
283			`#ifdef CONFIG_NCPFS_PACKET_SIGNING`
284			`server->sign_wanted = 0;`
285			`server->sign_active = 0;`
286			`#endif`
287			`server->m = *data;`
288			`server->m.file_mode = (server->m.file_mode &`
289			`(S_IRWXU\|S_IRWXG\|S_IRWXO)) \| S_IFREG;`
290			`server->m.dir_mode = (server->m.dir_mode &`
291			`(S_IRWXU\|S_IRWXG\|S_IRWXO)) \| S_IFDIR;`
292
293			`/* protect against invalid mount points */`
294			`server->m.mount_point[sizeof(server->m.mount_point)-1] = '\0';`
295
296			`server->packet_size = NCP_PACKET_SIZE;`
297			`server->packet = ncp_kmalloc(NCP_PACKET_SIZE, GFP_KERNEL);`
298
299			`if (server->packet == NULL)`
300			`{`
301			`printk("ncpfs: could not alloc packet\n");`
302			`error = -ENOMEM;`
303			`unlock_super(sb);`
304			`goto fail;`
305			`}`
306
307			`/*`
308			`* Make the connection to the server`
309			`*/`
310
311			`if (ncp_catch_watchdog(server) != 0)`
312			`{`
313			`printk("ncp_read_super: Could not catch watchdog\n");`
314			`error = -EINVAL;`
315			`unlock_super(sb);`
316			`goto fail;`
317			`}`
318
319			`if (ncp_catch_message(server) != 0)`
320			`{`
321			`printk("ncp_read_super: Could not catch messages\n");`
322			`ncp_dont_catch_watchdog(server);`
323			`error = -EINVAL;`
324			`unlock_super(sb);`
325			`goto fail;`
326			`}`
327
328			`ncp_lock_server(server);`
329			`error = ncp_connect(server);`
330			`ncp_unlock_server(server);`
331			`unlock_super(sb);`
332
333			`if (error < 0)`
334			`{`
335			`sb->s_dev = 0;`
336			`printk("ncp_read_super: Failed connection, bailing out "`
337			`"(error = %d).\n", -error);`
338			`ncp_kfree_s(server->packet, server->packet_size);`
339			`ncp_dont_catch_watchdog(server);`
340			`goto fail;`
341			`}`
342
343			`DPRINTK("ncp_read_super: NCP_SBP(sb) = %x\n", (int)NCP_SBP(sb));`
344
345			`ncp_init_root(server);`
346
347			`if (!(sb->s_mounted = iget(sb, ncp_info_ino(server, &(server->root)))))`
348			`{`
349			`sb->s_dev = 0;`
350			`printk("ncp_read_super: get root inode failed\n");`
351			`goto disconnect;`
352			`}`
353
354			`#ifdef CONFIG_NCPFS_PACKET_SIGNING`
355			`if (ncp_negotiate_size_and_options(server, NCP_DEFAULT_BUFSIZE,`
356			`NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)`
357			`{`
358			`if (options != NCP_DEFAULT_OPTIONS)`
359			`{`
360			`if (ncp_negotiate_size_and_options(server,`
361			`NCP_DEFAULT_BUFSIZE,`
362			`options & 2,`
363			`&(server->buffer_size), &options) != 0)`
364
365			`{`
366			`sb->s_dev = 0;`
367			`printk("ncp_read_super: "`
368			`"could not set options\n");`
369			`goto disconnect;`
370			`}`
371			`}`
372			`if (options & 2)`
373			`server->sign_wanted = 1;`
374			`}`
375			`else`
376			`#endif /* CONFIG_NCPFS_PACKET_SIGNING */`
377			`if (ncp_negotiate_buffersize(server, NCP_DEFAULT_BUFSIZE,`
378			`&(server->buffer_size)) != 0)`
379			`{`
380			`sb->s_dev = 0;`
381			`printk("ncp_read_super: could not get bufsize\n");`
382			`goto disconnect;`
383			`}`
384
385			`DPRINTK("ncpfs: bufsize = %d\n", server->buffer_size);`
386
387			`MOD_INC_USE_COUNT;`
388			`return sb;`
389
390			`disconnect:`
391			`ncp_lock_server(server);`
392			`ncp_disconnect(server);`
393			`ncp_unlock_server(server);`
394			`ncp_kfree_s(server->packet, server->packet_size);`
395			`ncp_dont_catch_watchdog(server);`
396			`fail:`
397			`ncp_filp->f_count -= 1;`
398			`wdog_filp->f_count -= 1;`
399			`msg_filp->f_count -= 1;`
400			`ncp_kfree_s(NCP_SBP(sb), sizeof(struct ncp_server));`
401			`return NULL;`
402			`}`
403
404			`static void`
405			`ncp_put_super(struct super_block *sb)`
406			`{`
407			`struct ncp_server *server = NCP_SBP(sb);`
408
409			`lock_super(sb);`
410
411			`ncp_lock_server(server);`
412			`ncp_disconnect(server);`
413			`ncp_unlock_server(server);`
414
415			`close_fp(server->ncp_filp);`
416
417			`ncp_dont_catch_watchdog(server);`
418			`close_fp(server->wdog_filp);`
419			`close_fp(server->msg_filp);`
420
421			`ncp_free_all_inodes(server);`
422
423			`ncp_kfree_s(server->packet, server->packet_size);`
424
425			`sb->s_dev = 0;`
426			`ncp_kfree_s(NCP_SBP(sb), sizeof(struct ncp_server));`
427			`NCP_SBP(sb) = NULL;`
428
429			`unlock_super(sb);`
430
431			`MOD_DEC_USE_COUNT;`
432			`}`
433
434			`/* This routine is called from an interrupt in ncp_msg_data_ready. So`
435			`* we have to be careful NOT to sleep here! */`
436			`void`
437			`ncp_trigger_message(struct ncp_server *server)`
438			`{`
439			`#ifdef CONFIG_KERNELD`
440			`char command[ sizeof(server->m.mount_point)`
441			`+ sizeof(NCP_MSG_COMMAND) + 2];`
442			`#endif`
443
444			`if (server == NULL)`
445			`{`
446			`printk("ncp_trigger_message: invalid server!\n");`
447			`return;`
448			`}`
449
450			`DPRINTK("ncp_trigger_message: on %s\n",`
451			`server->m.mount_point);`
452
453			`#ifdef CONFIG_KERNELD`
454			`strcpy(command, NCP_MSG_COMMAND);`
455			`strcat(command, " ");`
456			`strcat(command, server->m.mount_point);`
457			`DPRINTK("ksystem: %s\n", command);`
458			`ksystem(command, KERNELD_NOWAIT);`
459			`#endif`
460			`}`
461
462			`static void`
463			`ncp_statfs(struct super_block sb, struct statfs buf, int bufsiz)`
464			`{`
465			`struct statfs tmp;`
466
467			`/* We cannot say how much disk space is left on a mounted`
468			`NetWare Server, because free space is distributed over`
469			`volumes, and the current user might have disk quotas. So`
470			`free space is not that simple to determine. Our decision`
471			`here is to err conservatively. */`
472
473			`tmp.f_type = NCP_SUPER_MAGIC;`
474			`tmp.f_bsize = 512;`
475			`tmp.f_blocks = 0;`
476			`tmp.f_bfree = 0;`
477			`tmp.f_bavail = 0;`
478			`tmp.f_files = -1;`
479			`tmp.f_ffree = -1;`
480			`tmp.f_namelen = 12;`
481			`memcpy_tofs(buf, &tmp, bufsiz);`
482			`}`
483
484			`int`
485			`ncp_notify_change(struct inode inode, struct iattr attr)`
486			`{`
487			`int result = 0;`
488			`int info_mask;`
489			`struct nw_modify_dos_info info;`
490
491			`if (!ncp_conn_valid(NCP_SERVER(inode)))`
492			`{`
493			`return -EIO;`
494			`}`
495
496			`if ((result = inode_change_ok(inode, attr)) < 0)`
497			`return result;`
498
499			`if (((attr->ia_valid & ATTR_UID) &&`
500			`(attr->ia_uid != NCP_SERVER(inode)->m.uid)))`
501			`return -EPERM;`
502
503			`if (((attr->ia_valid & ATTR_GID) &&`
504			`(attr->ia_uid != NCP_SERVER(inode)->m.gid)))`
505			`return -EPERM;`
506
507			`if (((attr->ia_valid & ATTR_MODE) &&`
508			`(attr->ia_mode &`
509			`~(S_IFREG \| S_IFDIR \| S_IRWXU \| S_IRWXG \| S_IRWXO))))`
510			`return -EPERM;`
511
512			`info_mask = 0;`
513			`memset(&info, 0, sizeof(info));`
514
515			`#if 1`
516			`if ((attr->ia_valid & ATTR_MODE) != 0)`
517			`{`
518			`if (NCP_ISTRUCT(inode)->attributes & aDIR)`
519			`{`
520			`return -EPERM;`
521			`}`
522			`else`
523			`{`
524			`umode_t newmode;`
525
526			`info_mask \|= DM_ATTRIBUTES;`
527			`newmode=attr->ia_mode;`
528			`newmode &= NCP_SERVER(inode)->m.file_mode;`
529
530			`if (newmode & 0222) /* any write bit set */`
531			`{`
532			`info.attributes &= ~0x60001;`
533			`}`
534			`else`
535			`{`
536			`info.attributes \|= 0x60001;`
537			`}`
538			`}`
539			`}`
540			`#endif`
541
542			`if ((attr->ia_valid & ATTR_CTIME) != 0)`
543			`{`
544			`info_mask \|= (DM_CREATE_TIME\|DM_CREATE_DATE);`
545			`ncp_date_unix2dos(attr->ia_ctime,`
546			`&(info.creationTime), &(info.creationDate));`
547			`}`
548
549			`if ((attr->ia_valid & ATTR_MTIME) != 0)`
550			`{`
551			`info_mask \|= (DM_MODIFY_TIME\|DM_MODIFY_DATE);`
552			`ncp_date_unix2dos(attr->ia_mtime,`
553			`&(info.modifyTime), &(info.modifyDate));`
554			`}`
555
556			`if ((attr->ia_valid & ATTR_ATIME) != 0)`
557			`{`
558			`__u16 dummy;`
559			`info_mask \|= (DM_LAST_ACCESS_DATE);`
560			`ncp_date_unix2dos(attr->ia_ctime,`
561			`&(dummy), &(info.lastAccessDate));`
562			`}`
563
564			`if (info_mask != 0)`
565			`{`
566			`if ((result =`
567			`ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),`
568			`NCP_ISTRUCT(inode),`
569			`info_mask,`
570			`&info)) != 0)`
571			`{`
572			`result = -EACCES;`
573
574			`if (info_mask == (DM_CREATE_TIME\|DM_CREATE_DATE))`
575			`{`
576			`/* NetWare seems not to allow this. I`
577			`do not know why. So, just tell the`
578			`user everything went fine. This is`
579			`a terrible hack, but I do not know`
580			`how to do this correctly. */`
581			`result = 0;`
582			`}`
583			`}`
584			`}`
585
586			`if ((attr->ia_valid & ATTR_SIZE) != 0)`
587			`{`
588			`int written;`
589
590			`DPRINTK("ncpfs: trying to change size of %s to %ld\n",`
591			`NCP_ISTRUCT(inode)->entryName, attr->ia_size);`
592
593			`if ((result = ncp_make_open(inode, O_RDWR)) < 0)`
594			`{`
595			`return -EACCES;`
596			`}`
597
598			`ncp_write(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,`
599			`attr->ia_size, 0, "", &written);`
600
601			`/* According to ndir, the changes only take effect after`
602			`closing the file */`
603			`ncp_close_file(NCP_SERVER(inode),`
604			`NCP_FINFO(inode)->file_handle);`
605			`NCP_FINFO(inode)->opened = 0;`
606
607			`result = 0;`
608			`}`
609
610			`ncp_invalid_dir_cache(NCP_INOP(inode)->dir->inode);`
611
612			`return result;`
613			`}`
614
615			`#ifdef DEBUG_NCP_MALLOC`
616			`int ncp_malloced;`
617			`int ncp_current_malloced;`
618			`#endif`
619
620			`static struct file_system_type ncp_fs_type = {`
621			`ncp_read_super, "ncpfs", 0, NULL`
622			`};`
623
624			`int init_ncp_fs(void)`
625			`{`
626			`return register_filesystem(&ncp_fs_type);`
627			`}`
628
629			`#ifdef MODULE`
630			`int`
631			`init_module( void)`
632			`{`
633			`int status;`
634
635			`DPRINTK("ncpfs: init_module called\n");`
636
637			`#ifdef DEBUG_NCP_MALLOC`
638			`ncp_malloced = 0;`
639			`ncp_current_malloced = 0;`
640			`#endif`
641			`ncp_init_dir_cache();`
642
643			`if ((status = init_ncp_fs()) == 0)`
644			`register_symtab(0);`
645			`return status;`
646			`}`
647
648			`void`
649			`cleanup_module(void)`
650			`{`
651			`DPRINTK("ncpfs: cleanup_module called\n");`
652			`ncp_free_dir_cache();`
653			`unregister_filesystem(&ncp_fs_type);`
654			`#ifdef DEBUG_NCP_MALLOC`
655			`printk("ncp_malloced: %d\n", ncp_malloced);`
656			`printk("ncp_current_malloced: %d\n", ncp_current_malloced);`
657			`#endif`
658			`}`
659
660			`#endif`