diff options
Diffstat (limited to 'fs/ncpfs')
| -rw-r--r-- | fs/ncpfs/Makefile | 2 | ||||
| -rw-r--r-- | fs/ncpfs/dir.c | 457 | ||||
| -rw-r--r-- | fs/ncpfs/file.c | 71 | ||||
| -rw-r--r-- | fs/ncpfs/getopt.c | 23 | ||||
| -rw-r--r-- | fs/ncpfs/inode.c | 322 | ||||
| -rw-r--r-- | fs/ncpfs/ioctl.c | 512 | ||||
| -rw-r--r-- | fs/ncpfs/mmap.c | 17 | ||||
| -rw-r--r-- | fs/ncpfs/ncp_fs.h | 100 | ||||
| -rw-r--r-- | fs/ncpfs/ncp_fs_i.h | 29 | ||||
| -rw-r--r-- | fs/ncpfs/ncp_fs_sb.h | 174 | ||||
| -rw-r--r-- | fs/ncpfs/ncplib_kernel.c | 127 | ||||
| -rw-r--r-- | fs/ncpfs/ncplib_kernel.h | 35 | ||||
| -rw-r--r-- | fs/ncpfs/ncpsign_kernel.c | 11 | ||||
| -rw-r--r-- | fs/ncpfs/ncpsign_kernel.h | 2 | ||||
| -rw-r--r-- | fs/ncpfs/sock.c | 57 | ||||
| -rw-r--r-- | fs/ncpfs/symlink.c | 9 |
16 files changed, 1155 insertions, 793 deletions
diff --git a/fs/ncpfs/Makefile b/fs/ncpfs/Makefile index 68ea095100a..c66af563f2c 100644 --- a/fs/ncpfs/Makefile +++ b/fs/ncpfs/Makefile @@ -11,6 +11,6 @@ ncpfs-$(CONFIG_NCPFS_EXTRAS) += symlink.o ncpfs-$(CONFIG_NCPFS_NFS_NS) += symlink.o # If you want debugging output, please uncomment the following line -# EXTRA_CFLAGS += -DDEBUG_NCP=1 +# ccflags-y := -DDEBUG_NCP=1 CFLAGS_ncplib_kernel.o := -finline-functions diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c index b8b5b30d53f..08b8ea8c353 100644 --- a/fs/ncpfs/dir.c +++ b/fs/ncpfs/dir.c @@ -15,33 +15,30 @@ #include <linux/errno.h> #include <linux/stat.h> #include <linux/kernel.h> -#include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/mm.h> +#include <linux/namei.h> #include <asm/uaccess.h> #include <asm/byteorder.h> -#include <linux/smp_lock.h> -#include <linux/ncp_fs.h> +#include "ncp_fs.h" -#include "ncplib_kernel.h" - -static void ncp_read_volume_list(struct file *, void *, filldir_t, +static void ncp_read_volume_list(struct file *, struct dir_context *, struct ncp_cache_control *); -static void ncp_do_readdir(struct file *, void *, filldir_t, +static void ncp_do_readdir(struct file *, struct dir_context *, struct ncp_cache_control *); -static int ncp_readdir(struct file *, void *, filldir_t); +static int ncp_readdir(struct file *, struct dir_context *); -static int ncp_create(struct inode *, struct dentry *, int, struct nameidata *); -static struct dentry *ncp_lookup(struct inode *, struct dentry *, struct nameidata *); +static int ncp_create(struct inode *, struct dentry *, umode_t, bool); +static struct dentry *ncp_lookup(struct inode *, struct dentry *, unsigned int); static int ncp_unlink(struct inode *, struct dentry *); -static int ncp_mkdir(struct inode *, struct dentry *, int); +static int ncp_mkdir(struct inode *, struct dentry *, umode_t); static int ncp_rmdir(struct inode *, struct dentry *); static int ncp_rename(struct inode *, struct dentry *, struct inode *, struct dentry *); static int ncp_mknod(struct inode * dir, struct dentry *dentry, - int mode, dev_t rdev); + umode_t mode, dev_t rdev); #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS) extern int ncp_symlink(struct inode *, struct dentry *, const char *); #else @@ -50,9 +47,10 @@ extern int ncp_symlink(struct inode *, struct dentry *, const char *); const struct file_operations ncp_dir_operations = { + .llseek = generic_file_llseek, .read = generic_read_dir, - .readdir = ncp_readdir, - .ioctl = ncp_ioctl, + .iterate = ncp_readdir, + .unlocked_ioctl = ncp_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = ncp_compat_ioctl, #endif @@ -74,12 +72,13 @@ const struct inode_operations ncp_dir_inode_operations = /* * Dentry operations routines */ -static int ncp_lookup_validate(struct dentry *, struct nameidata *); -static int ncp_hash_dentry(struct dentry *, struct qstr *); -static int ncp_compare_dentry (struct dentry *, struct qstr *, struct qstr *); -static int ncp_delete_dentry(struct dentry *); +static int ncp_lookup_validate(struct dentry *, unsigned int); +static int ncp_hash_dentry(const struct dentry *, struct qstr *); +static int ncp_compare_dentry(const struct dentry *, const struct dentry *, + unsigned int, const char *, const struct qstr *); +static int ncp_delete_dentry(const struct dentry *); -static const struct dentry_operations ncp_dentry_operations = +const struct dentry_operations ncp_dentry_operations = { .d_revalidate = ncp_lookup_validate, .d_hash = ncp_hash_dentry, @@ -87,28 +86,57 @@ static const struct dentry_operations ncp_dentry_operations = .d_delete = ncp_delete_dentry, }; -const struct dentry_operations ncp_root_dentry_operations = +#define ncp_namespace(i) (NCP_SERVER(i)->name_space[NCP_FINFO(i)->volNumber]) + +static inline int ncp_preserve_entry_case(struct inode *i, __u32 nscreator) { - .d_hash = ncp_hash_dentry, - .d_compare = ncp_compare_dentry, - .d_delete = ncp_delete_dentry, -}; +#ifdef CONFIG_NCPFS_SMALLDOS + int ns = ncp_namespace(i); + + if ((ns == NW_NS_DOS) +#ifdef CONFIG_NCPFS_OS2_NS + || ((ns == NW_NS_OS2) && (nscreator == NW_NS_DOS)) +#endif /* CONFIG_NCPFS_OS2_NS */ + ) + return 0; +#endif /* CONFIG_NCPFS_SMALLDOS */ + return 1; +} + +#define ncp_preserve_case(i) (ncp_namespace(i) != NW_NS_DOS) +static inline int ncp_case_sensitive(const struct inode *i) +{ +#ifdef CONFIG_NCPFS_NFS_NS + return ncp_namespace(i) == NW_NS_NFS; +#else + return 0; +#endif /* CONFIG_NCPFS_NFS_NS */ +} /* * Note: leave the hash unchanged if the directory * is case-sensitive. + * + * Accessing the parent inode can be racy under RCU pathwalking. + * Use ACCESS_ONCE() to make sure we use _one_ particular inode, + * the callers will handle races. */ static int -ncp_hash_dentry(struct dentry *dentry, struct qstr *this) +ncp_hash_dentry(const struct dentry *dentry, struct qstr *this) { - struct nls_table *t; - unsigned long hash; - int i; + struct inode *inode = ACCESS_ONCE(dentry->d_inode); + + if (!inode) + return 0; - t = NCP_IO_TABLE(dentry); + if (!ncp_case_sensitive(inode)) { + struct super_block *sb = dentry->d_sb; + struct nls_table *t; + unsigned long hash; + int i; - if (!ncp_case_sensitive(dentry->d_inode)) { + t = NCP_IO_TABLE(sb); hash = init_name_hash(); for (i=0; i<this->len ; i++) hash = partial_name_hash(ncp_tolower(t, this->name[i]), @@ -118,16 +146,28 @@ ncp_hash_dentry(struct dentry *dentry, struct qstr *this) return 0; } +/* + * Accessing the parent inode can be racy under RCU pathwalking. + * Use ACCESS_ONCE() to make sure we use _one_ particular inode, + * the callers will handle races. + */ static int -ncp_compare_dentry(struct dentry *dentry, struct qstr *a, struct qstr *b) +ncp_compare_dentry(const struct dentry *parent, const struct dentry *dentry, + unsigned int len, const char *str, const struct qstr *name) { - if (a->len != b->len) + struct inode *pinode; + + if (len != name->len) + return 1; + + pinode = ACCESS_ONCE(parent->d_inode); + if (!pinode) return 1; - if (ncp_case_sensitive(dentry->d_inode)) - return strncmp(a->name, b->name, a->len); + if (ncp_case_sensitive(pinode)) + return strncmp(str, name->name, len); - return ncp_strnicmp(NCP_IO_TABLE(dentry), a->name, b->name, a->len); + return ncp_strnicmp(NCP_IO_TABLE(pinode->i_sb), str, name->name, len); } /* @@ -136,7 +176,7 @@ ncp_compare_dentry(struct dentry *dentry, struct qstr *a, struct qstr *b) * Closing files can be safely postponed until iput() - it's done there anyway. */ static int -ncp_delete_dentry(struct dentry * dentry) +ncp_delete_dentry(const struct dentry * dentry) { struct inode *inode = dentry->d_inode; @@ -266,7 +306,7 @@ leave_me:; static int -__ncp_lookup_validate(struct dentry *dentry) +ncp_lookup_validate(struct dentry *dentry, unsigned int flags) { struct ncp_server *server; struct dentry *parent; @@ -275,6 +315,12 @@ __ncp_lookup_validate(struct dentry *dentry) int res, val = 0, len; __u8 __name[NCP_MAXPATHLEN + 1]; + if (dentry == dentry->d_sb->s_root) + return 1; + + if (flags & LOOKUP_RCU) + return -ECHILD; + parent = dget_parent(dentry); dir = parent->d_inode; @@ -283,9 +329,6 @@ __ncp_lookup_validate(struct dentry *dentry) server = NCP_SERVER(dir); - if (!ncp_conn_valid(server)) - goto finished; - /* * Inspired by smbfs: * The default validation is based on dentry age: @@ -296,16 +339,18 @@ __ncp_lookup_validate(struct dentry *dentry) if (val) goto finished; - DDPRINTK("ncp_lookup_validate: %s/%s not valid, age=%ld, server lookup\n", - dentry->d_parent->d_name.name, dentry->d_name.name, - NCP_GET_AGE(dentry)); + ncp_dbg(2, "%pd2 not valid, age=%ld, server lookup\n", + dentry, NCP_GET_AGE(dentry)); len = sizeof(__name); if (ncp_is_server_root(dir)) { res = ncp_io2vol(server, __name, &len, dentry->d_name.name, dentry->d_name.len, 1); - if (!res) + if (!res) { res = ncp_lookup_volume(server, __name, &(finfo.i)); + if (!res) + ncp_update_known_namespace(server, finfo.i.volNumber, NULL); + } } else { res = ncp_io2vol(server, __name, &len, dentry->d_name.name, dentry->d_name.len, !ncp_preserve_case(dir)); @@ -313,38 +358,32 @@ __ncp_lookup_validate(struct dentry *dentry) res = ncp_obtain_info(server, dir, __name, &(finfo.i)); } finfo.volume = finfo.i.volNumber; - DDPRINTK("ncp_lookup_validate: looked for %s/%s, res=%d\n", - dentry->d_parent->d_name.name, __name, res); + ncp_dbg(2, "looked for %pd/%s, res=%d\n", + dentry->d_parent, __name, res); /* * If we didn't find it, or if it has a different dirEntNum to * what we remember, it's not valid any more. */ if (!res) { - if (finfo.i.dirEntNum == NCP_FINFO(dentry->d_inode)->dirEntNum) { + struct inode *inode = dentry->d_inode; + + mutex_lock(&inode->i_mutex); + if (finfo.i.dirEntNum == NCP_FINFO(inode)->dirEntNum) { ncp_new_dentry(dentry); val=1; } else - DDPRINTK("ncp_lookup_validate: found, but dirEntNum changed\n"); + ncp_dbg(2, "found, but dirEntNum changed\n"); - ncp_update_inode2(dentry->d_inode, &finfo); + ncp_update_inode2(inode, &finfo); + mutex_unlock(&inode->i_mutex); } finished: - DDPRINTK("ncp_lookup_validate: result=%d\n", val); + ncp_dbg(2, "result=%d\n", val); dput(parent); return val; } -static int -ncp_lookup_validate(struct dentry * dentry, struct nameidata *nd) -{ - int res; - lock_kernel(); - res = __ncp_lookup_validate(dentry); - unlock_kernel(); - return res; -} - static struct dentry * ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos) { @@ -364,21 +403,21 @@ ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos) } /* If a pointer is invalid, we search the dentry. */ - spin_lock(&dcache_lock); + spin_lock(&parent->d_lock); next = parent->d_subdirs.next; while (next != &parent->d_subdirs) { dent = list_entry(next, struct dentry, d_u.d_child); if ((unsigned long)dent->d_fsdata == fpos) { if (dent->d_inode) - dget_locked(dent); + dget(dent); else dent = NULL; - spin_unlock(&dcache_lock); + spin_unlock(&parent->d_lock); goto out; } next = next->next; } - spin_unlock(&dcache_lock); + spin_unlock(&parent->d_lock); return NULL; out: @@ -400,9 +439,9 @@ static time_t ncp_obtain_mtime(struct dentry *dentry) return ncp_date_dos2unix(i.modifyTime, i.modifyDate); } -static int ncp_readdir(struct file *filp, void *dirent, filldir_t filldir) +static int ncp_readdir(struct file *file, struct dir_context *ctx) { - struct dentry *dentry = filp->f_path.dentry; + struct dentry *dentry = file->f_path.dentry; struct inode *inode = dentry->d_inode; struct page *page = NULL; struct ncp_server *server = NCP_SERVER(inode); @@ -411,30 +450,19 @@ static int ncp_readdir(struct file *filp, void *dirent, filldir_t filldir) int result, mtime_valid = 0; time_t mtime = 0; - lock_kernel(); - ctl.page = NULL; ctl.cache = NULL; - DDPRINTK("ncp_readdir: reading %s/%s, pos=%d\n", - dentry->d_parent->d_name.name, dentry->d_name.name, - (int) filp->f_pos); + ncp_dbg(2, "reading %pD2, pos=%d\n", file, (int)ctx->pos); result = -EIO; + /* Do not generate '.' and '..' when server is dead. */ if (!ncp_conn_valid(server)) goto out; result = 0; - if (filp->f_pos == 0) { - if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR)) - goto out; - filp->f_pos = 1; - } - if (filp->f_pos == 1) { - if (filldir(dirent, "..", 2, 1, parent_ino(dentry), DT_DIR)) - goto out; - filp->f_pos = 2; - } + if (!dir_emit_dots(file, ctx)) + goto out; page = grab_cache_page(&inode->i_data, 0); if (!page) @@ -446,7 +474,7 @@ static int ncp_readdir(struct file *filp, void *dirent, filldir_t filldir) if (!PageUptodate(page) || !ctl.head.eof) goto init_cache; - if (filp->f_pos == 2) { + if (ctx->pos == 2) { if (jiffies - ctl.head.time >= NCP_MAX_AGE(server)) goto init_cache; @@ -456,10 +484,10 @@ static int ncp_readdir(struct file *filp, void *dirent, filldir_t filldir) goto init_cache; } - if (filp->f_pos > ctl.head.end) + if (ctx->pos > ctl.head.end) goto finished; - ctl.fpos = filp->f_pos + (NCP_DIRCACHE_START - 2); + ctl.fpos = ctx->pos + (NCP_DIRCACHE_START - 2); ctl.ofs = ctl.fpos / NCP_DIRCACHE_SIZE; ctl.idx = ctl.fpos % NCP_DIRCACHE_SIZE; @@ -474,21 +502,21 @@ static int ncp_readdir(struct file *filp, void *dirent, filldir_t filldir) } while (ctl.idx < NCP_DIRCACHE_SIZE) { struct dentry *dent; - int res; + bool over; dent = ncp_dget_fpos(ctl.cache->dentry[ctl.idx], - dentry, filp->f_pos); + dentry, ctx->pos); if (!dent) goto invalid_cache; - res = filldir(dirent, dent->d_name.name, - dent->d_name.len, filp->f_pos, + over = !dir_emit(ctx, dent->d_name.name, + dent->d_name.len, dent->d_inode->i_ino, DT_UNKNOWN); dput(dent); - if (res) + if (over) goto finished; - filp->f_pos += 1; + ctx->pos += 1; ctl.idx += 1; - if (filp->f_pos > ctl.head.end) + if (ctx->pos > ctl.head.end) goto finished; } if (ctl.page) { @@ -525,13 +553,19 @@ init_cache: ctl.valid = 1; read_really: if (ncp_is_server_root(inode)) { - ncp_read_volume_list(filp, dirent, filldir, &ctl); + ncp_read_volume_list(file, ctx, &ctl); } else { - ncp_do_readdir(filp, dirent, filldir, &ctl); + ncp_do_readdir(file, ctx, &ctl); } ctl.head.end = ctl.fpos - 1; ctl.head.eof = ctl.valid; finished: + if (ctl.page) { + kunmap(ctl.page); + SetPageUptodate(ctl.page); + unlock_page(ctl.page); + page_cache_release(ctl.page); + } if (page) { cache->head = ctl.head; kunmap(page); @@ -539,23 +573,17 @@ finished: unlock_page(page); page_cache_release(page); } - if (ctl.page) { - kunmap(ctl.page); - SetPageUptodate(ctl.page); - unlock_page(ctl.page); - page_cache_release(ctl.page); - } out: - unlock_kernel(); return result; } static int -ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir, - struct ncp_cache_control *ctrl, struct ncp_entry_info *entry) +ncp_fill_cache(struct file *file, struct dir_context *ctx, + struct ncp_cache_control *ctrl, struct ncp_entry_info *entry, + int inval_childs) { - struct dentry *newdent, *dentry = filp->f_path.dentry; - struct inode *newino, *inode = dentry->d_inode; + struct dentry *newdent, *dentry = file->f_path.dentry; + struct inode *dir = dentry->d_inode; struct ncp_cache_control ctl = *ctrl; struct qstr qname; int valid = 0; @@ -564,42 +592,56 @@ ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir, __u8 __name[NCP_MAXPATHLEN + 1]; qname.len = sizeof(__name); - if (ncp_vol2io(NCP_SERVER(inode), __name, &qname.len, + if (ncp_vol2io(NCP_SERVER(dir), __name, &qname.len, entry->i.entryName, entry->i.nameLen, - !ncp_preserve_entry_case(inode, entry->i.NSCreator))) + !ncp_preserve_entry_case(dir, entry->i.NSCreator))) return 1; /* I'm not sure */ qname.name = __name; - qname.hash = full_name_hash(qname.name, qname.len); - - if (dentry->d_op && dentry->d_op->d_hash) - if (dentry->d_op->d_hash(dentry, &qname) != 0) - goto end_advance; - - newdent = d_lookup(dentry, &qname); + newdent = d_hash_and_lookup(dentry, &qname); + if (unlikely(IS_ERR(newdent))) + goto end_advance; if (!newdent) { newdent = d_alloc(dentry, &qname); if (!newdent) goto end_advance; } else { hashed = 1; - memcpy((char *) newdent->d_name.name, qname.name, - newdent->d_name.len); + + /* If case sensitivity changed for this volume, all entries below this one + should be thrown away. This entry itself is not affected, as its case + sensitivity is controlled by its own parent. */ + if (inval_childs) + shrink_dcache_parent(newdent); + + /* + * NetWare's OS2 namespace is case preserving yet case + * insensitive. So we update dentry's name as received from + * server. Parent dir's i_mutex is locked because we're in + * readdir. + */ + dentry_update_name_case(newdent, &qname); } if (!newdent->d_inode) { + struct inode *inode; + entry->opened = 0; - entry->ino = iunique(inode->i_sb, 2); - newino = ncp_iget(inode->i_sb, entry); - if (newino) { - newdent->d_op = &ncp_dentry_operations; - d_instantiate(newdent, newino); + entry->ino = iunique(dir->i_sb, 2); + inode = ncp_iget(dir->i_sb, entry); + if (inode) { + d_instantiate(newdent, inode); if (!hashed) d_rehash(newdent); } - } else - ncp_update_inode2(newdent->d_inode, entry); + } else { + struct inode *inode = newdent->d_inode; + + mutex_lock_nested(&inode->i_mutex, I_MUTEX_CHILD); + ncp_update_inode2(inode, entry); + mutex_unlock(&inode->i_mutex); + } if (newdent->d_inode) { ino = newdent->d_inode->i_ino; @@ -617,7 +659,7 @@ ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir, ctl.cache = NULL; ctl.idx -= NCP_DIRCACHE_SIZE; ctl.ofs += 1; - ctl.page = grab_cache_page(&inode->i_data, ctl.ofs); + ctl.page = grab_cache_page(&dir->i_data, ctl.ofs); if (ctl.page) ctl.cache = kmap(ctl.page); } @@ -629,15 +671,13 @@ ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir, end_advance: if (!valid) ctl.valid = 0; - if (!ctl.filled && (ctl.fpos == filp->f_pos)) { + if (!ctl.filled && (ctl.fpos == ctx->pos)) { if (!ino) - ino = find_inode_number(dentry, &qname); - if (!ino) - ino = iunique(inode->i_sb, 2); - ctl.filled = filldir(dirent, qname.name, qname.len, - filp->f_pos, ino, DT_UNKNOWN); + ino = iunique(dir->i_sb, 2); + ctl.filled = !dir_emit(ctx, qname.name, qname.len, + ino, DT_UNKNOWN); if (!ctl.filled) - filp->f_pos += 1; + ctx->pos += 1; } ctl.fpos += 1; ctl.idx += 1; @@ -646,46 +686,46 @@ end_advance: } static void -ncp_read_volume_list(struct file *filp, void *dirent, filldir_t filldir, +ncp_read_volume_list(struct file *file, struct dir_context *ctx, struct ncp_cache_control *ctl) { - struct dentry *dentry = filp->f_path.dentry; + struct dentry *dentry = file->f_path.dentry; struct inode *inode = dentry->d_inode; struct ncp_server *server = NCP_SERVER(inode); struct ncp_volume_info info; struct ncp_entry_info entry; int i; - DPRINTK("ncp_read_volume_list: pos=%ld\n", - (unsigned long) filp->f_pos); + ncp_dbg(1, "pos=%ld\n", (unsigned long)ctx->pos); for (i = 0; i < NCP_NUMBER_OF_VOLUMES; i++) { + int inval_dentry; if (ncp_get_volume_info_with_number(server, i, &info) != 0) return; if (!strlen(info.volume_name)) continue; - DPRINTK("ncp_read_volume_list: found vol: %s\n", - info.volume_name); + ncp_dbg(1, "found vol: %s\n", info.volume_name); if (ncp_lookup_volume(server, info.volume_name, &entry.i)) { - DPRINTK("ncpfs: could not lookup vol %s\n", + ncp_dbg(1, "could not lookup vol %s\n", info.volume_name); continue; } + inval_dentry = ncp_update_known_namespace(server, entry.i.volNumber, NULL); entry.volume = entry.i.volNumber; - if (!ncp_fill_cache(filp, dirent, filldir, ctl, &entry)) + if (!ncp_fill_cache(file, ctx, ctl, &entry, inval_dentry)) return; } } static void -ncp_do_readdir(struct file *filp, void *dirent, filldir_t filldir, +ncp_do_readdir(struct file *file, struct dir_context *ctx, struct ncp_cache_control *ctl) { - struct dentry *dentry = filp->f_path.dentry; + struct dentry *dentry = file->f_path.dentry; struct inode *dir = dentry->d_inode; struct ncp_server *server = NCP_SERVER(dir); struct nw_search_sequence seq; @@ -695,16 +735,13 @@ ncp_do_readdir(struct file *filp, void *dirent, filldir_t filldir, int more; size_t bufsize; - DPRINTK("ncp_do_readdir: %s/%s, fpos=%ld\n", - dentry->d_parent->d_name.name, dentry->d_name.name, - (unsigned long) filp->f_pos); - PPRINTK("ncp_do_readdir: init %s, volnum=%d, dirent=%u\n", - dentry->d_name.name, NCP_FINFO(dir)->volNumber, - NCP_FINFO(dir)->dirEntNum); + ncp_dbg(1, "%pD2, fpos=%ld\n", file, (unsigned long)ctx->pos); + ncp_vdbg("init %pD, volnum=%d, dirent=%u\n", + file, NCP_FINFO(dir)->volNumber, NCP_FINFO(dir)->dirEntNum); err = ncp_initialize_search(server, dir, &seq); if (err) { - DPRINTK("ncp_do_readdir: init failed, err=%d\n", err); + ncp_dbg(1, "init failed, err=%d\n", err); return; } /* We MUST NOT use server->buffer_size handshaked with server if we are @@ -739,7 +776,7 @@ ncp_do_readdir(struct file *filp, void *dirent, filldir_t filldir, rpl += onerpl; rpls -= onerpl; entry.volume = entry.i.volNumber; - if (!ncp_fill_cache(filp, dirent, filldir, ctl, &entry)) + if (!ncp_fill_cache(file, ctx, ctl, &entry, 0)) break; } } while (more); @@ -767,31 +804,32 @@ int ncp_conn_logged_in(struct super_block *sb) goto out; result = -ENOENT; if (ncp_get_volume_root(server, __name, &volNumber, &dirEntNum, &DosDirNum)) { - PPRINTK("ncp_conn_logged_in: %s not found\n", - server->m.mounted_vol); + ncp_vdbg("%s not found\n", server->m.mounted_vol); goto out; } dent = sb->s_root; if (dent) { struct inode* ino = dent->d_inode; if (ino) { + ncp_update_known_namespace(server, volNumber, NULL); NCP_FINFO(ino)->volNumber = volNumber; NCP_FINFO(ino)->dirEntNum = dirEntNum; NCP_FINFO(ino)->DosDirNum = DosDirNum; + result = 0; } else { - DPRINTK("ncpfs: sb->s_root->d_inode == NULL!\n"); + ncp_dbg(1, "sb->s_root->d_inode == NULL!\n"); } } else { - DPRINTK("ncpfs: sb->s_root == NULL!\n"); + ncp_dbg(1, "sb->s_root == NULL!\n"); } - } - result = 0; + } else + result = 0; out: return result; } -static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd) +static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) { struct ncp_server *server = NCP_SERVER(dir); struct inode *inode = NULL; @@ -799,13 +837,11 @@ static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, struc int error, res, len; __u8 __name[NCP_MAXPATHLEN + 1]; - lock_kernel(); error = -EIO; if (!ncp_conn_valid(server)) goto finished; - PPRINTK("ncp_lookup: server lookup for %s/%s\n", - dentry->d_parent->d_name.name, dentry->d_name.name); + ncp_vdbg("server lookup for %pd2\n", dentry); len = sizeof(__name); if (ncp_is_server_root(dir)) { @@ -813,14 +849,15 @@ static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, struc dentry->d_name.len, 1); if (!res) res = ncp_lookup_volume(server, __name, &(finfo.i)); + if (!res) + ncp_update_known_namespace(server, finfo.i.volNumber, NULL); } else { res = ncp_io2vol(server, __name, &len, dentry->d_name.name, dentry->d_name.len, !ncp_preserve_case(dir)); if (!res) res = ncp_obtain_info(server, dir, __name, &(finfo.i)); } - PPRINTK("ncp_lookup: looked for %s/%s, res=%d\n", - dentry->d_parent->d_name.name, __name, res); + ncp_vdbg("looked for %pd2, res=%d\n", dentry, res); /* * If we didn't find an entry, make a negative dentry. */ @@ -839,14 +876,12 @@ static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, struc if (inode) { ncp_new_dentry(dentry); add_entry: - dentry->d_op = &ncp_dentry_operations; d_add(dentry, inode); error = 0; } finished: - PPRINTK("ncp_lookup: result=%d\n", error); - unlock_kernel(); + ncp_vdbg("result=%d\n", error); return ERR_PTR(error); } @@ -869,13 +904,12 @@ out: return error; out_close: - PPRINTK("ncp_instantiate: %s/%s failed, closing file\n", - dentry->d_parent->d_name.name, dentry->d_name.name); + ncp_vdbg("%pd2 failed, closing file\n", dentry); ncp_close_file(NCP_SERVER(dir), finfo->file_handle); goto out; } -int ncp_create_new(struct inode *dir, struct dentry *dentry, int mode, +int ncp_create_new(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev, __le32 attributes) { struct ncp_server *server = NCP_SERVER(dir); @@ -884,13 +918,7 @@ int ncp_create_new(struct inode *dir, struct dentry *dentry, int mode, int opmode; __u8 __name[NCP_MAXPATHLEN + 1]; - PPRINTK("ncp_create_new: creating %s/%s, mode=%x\n", - dentry->d_parent->d_name.name, dentry->d_name.name, mode); - - error = -EIO; - lock_kernel(); - if (!ncp_conn_valid(server)) - goto out; + ncp_vdbg("creating %pd2, mode=%hx\n", dentry, mode); ncp_age_dentry(server, dentry); len = sizeof(__name); @@ -917,8 +945,9 @@ int ncp_create_new(struct inode *dir, struct dentry *dentry, int mode, if (result) { if (result == 0x87) error = -ENAMETOOLONG; - DPRINTK("ncp_create: %s/%s failed\n", - dentry->d_parent->d_name.name, dentry->d_name.name); + else if (result < 0) + error = result; + ncp_dbg(1, "%pd2 failed\n", dentry); goto out; } opmode = O_WRONLY; @@ -935,30 +964,23 @@ int ncp_create_new(struct inode *dir, struct dentry *dentry, int mode, error = ncp_instantiate(dir, dentry, &finfo); out: - unlock_kernel(); return error; } -static int ncp_create(struct inode *dir, struct dentry *dentry, int mode, - struct nameidata *nd) +static int ncp_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool excl) { return ncp_create_new(dir, dentry, mode, 0, 0); } -static int ncp_mkdir(struct inode *dir, struct dentry *dentry, int mode) +static int ncp_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) { struct ncp_entry_info finfo; struct ncp_server *server = NCP_SERVER(dir); int error, len; __u8 __name[NCP_MAXPATHLEN + 1]; - DPRINTK("ncp_mkdir: making %s/%s\n", - dentry->d_parent->d_name.name, dentry->d_name.name); - - error = -EIO; - lock_kernel(); - if (!ncp_conn_valid(server)) - goto out; + ncp_dbg(1, "making %pd2\n", dentry); ncp_age_dentry(server, dentry); len = sizeof(__name); @@ -967,12 +989,11 @@ static int ncp_mkdir(struct inode *dir, struct dentry *dentry, int mode) if (error) goto out; - error = -EACCES; - if (ncp_open_create_file_or_subdir(server, dir, __name, + error = ncp_open_create_file_or_subdir(server, dir, __name, OC_MODE_CREATE, aDIR, cpu_to_le16(0xffff), - &finfo) == 0) - { + &finfo); + if (error == 0) { if (ncp_is_nfs_extras(server, finfo.volume)) { mode |= S_IFDIR; finfo.i.nfs.mode = mode; @@ -983,9 +1004,10 @@ static int ncp_mkdir(struct inode *dir, struct dentry *dentry, int mode) goto out; } error = ncp_instantiate(dir, dentry, &finfo); + } else if (error > 0) { + error = -EACCES; } out: - unlock_kernel(); return error; } @@ -995,17 +1017,7 @@ static int ncp_rmdir(struct inode *dir, struct dentry *dentry) int error, result, len; __u8 __name[NCP_MAXPATHLEN + 1]; - DPRINTK("ncp_rmdir: removing %s/%s\n", - dentry->d_parent->d_name.name, dentry->d_name.name); - - error = -EIO; - lock_kernel(); - if (!ncp_conn_valid(server)) - goto out; - - error = -EBUSY; - if (!d_unhashed(dentry)) - goto out; + ncp_dbg(1, "removing %pd2\n", dentry); len = sizeof(__name); error = ncp_io2vol(server, __name, &len, dentry->d_name.name, @@ -1036,11 +1048,10 @@ static int ncp_rmdir(struct inode *dir, struct dentry *dentry) error = -ENOENT; break; default: - error = -EACCES; + error = result < 0 ? result : -EACCES; break; } out: - unlock_kernel(); return error; } @@ -1050,20 +1061,14 @@ static int ncp_unlink(struct inode *dir, struct dentry *dentry) struct ncp_server *server; int error; - lock_kernel(); server = NCP_SERVER(dir); - DPRINTK("ncp_unlink: unlinking %s/%s\n", - dentry->d_parent->d_name.name, dentry->d_name.name); + ncp_dbg(1, "unlinking %pd2\n", dentry); - error = -EIO; - if (!ncp_conn_valid(server)) - goto out; - /* * Check whether to close the file ... */ if (inode) { - PPRINTK("ncp_unlink: closing file\n"); + ncp_vdbg("closing file\n"); ncp_make_closed(inode); } @@ -1077,8 +1082,7 @@ static int ncp_unlink(struct inode *dir, struct dentry *dentry) #endif switch (error) { case 0x00: - DPRINTK("ncp: removed %s/%s\n", - dentry->d_parent->d_name.name, dentry->d_name.name); + ncp_dbg(1, "removed %pd2\n", dentry); break; case 0x85: case 0x8A: @@ -1097,12 +1101,9 @@ static int ncp_unlink(struct inode *dir, struct dentry *dentry) error = -ENOENT; break; default: - error = -EACCES; + error = error < 0 ? error : -EACCES; break; } - -out: - unlock_kernel(); return error; } @@ -1114,14 +1115,7 @@ static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry, int old_len, new_len; __u8 __old_name[NCP_MAXPATHLEN + 1], __new_name[NCP_MAXPATHLEN + 1]; - DPRINTK("ncp_rename: %s/%s to %s/%s\n", - old_dentry->d_parent->d_name.name, old_dentry->d_name.name, - new_dentry->d_parent->d_name.name, new_dentry->d_name.name); - - error = -EIO; - lock_kernel(); - if (!ncp_conn_valid(server)) - goto out; + ncp_dbg(1, "%pd2 to %pd2\n", old_dentry, new_dentry); ncp_age_dentry(server, old_dentry); ncp_age_dentry(server, new_dentry); @@ -1151,8 +1145,8 @@ static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry, #endif switch (error) { case 0x00: - DPRINTK("ncp renamed %s -> %s.\n", - old_dentry->d_name.name,new_dentry->d_name.name); + ncp_dbg(1, "renamed %pd -> %pd\n", + old_dentry, new_dentry); break; case 0x9E: error = -ENAMETOOLONG; @@ -1161,21 +1155,20 @@ static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry, error = -ENOENT; break; default: - error = -EACCES; + error = error < 0 ? error : -EACCES; break; } out: - unlock_kernel(); return error; } static int ncp_mknod(struct inode * dir, struct dentry *dentry, - int mode, dev_t rdev) + umode_t mode, dev_t rdev) { if (!new_valid_dev(rdev)) return -EINVAL; if (ncp_is_nfs_extras(NCP_SERVER(dir), NCP_FINFO(dir)->volNumber)) { - DPRINTK(KERN_DEBUG "ncp_mknod: mode = 0%o\n", mode); + ncp_dbg(1, "mode = 0%ho\n", mode); return ncp_create_new(dir, dentry, mode, rdev, 0); } return -EPERM; /* Strange, but true */ diff --git a/fs/ncpfs/file.c b/fs/ncpfs/file.c index 6a7d901f193..77640a8bfb8 100644 --- a/fs/ncpfs/file.c +++ b/fs/ncpfs/file.c @@ -6,8 +6,9 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <asm/uaccess.h> -#include <asm/system.h> #include <linux/time.h> #include <linux/kernel.h> @@ -15,17 +16,14 @@ #include <linux/fcntl.h> #include <linux/stat.h> #include <linux/mm.h> -#include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/sched.h> -#include <linux/smp_lock.h> -#include <linux/ncp_fs.h> -#include "ncplib_kernel.h" +#include "ncp_fs.h" -static int ncp_fsync(struct file *file, struct dentry *dentry, int datasync) +static int ncp_fsync(struct file *file, loff_t start, loff_t end, int datasync) { - return 0; + return filemap_write_and_wait_range(file->f_mapping, start, end); } /* @@ -38,11 +36,11 @@ int ncp_make_open(struct inode *inode, int right) error = -EINVAL; if (!inode) { - printk(KERN_ERR "ncp_make_open: got NULL inode\n"); + pr_err("%s: got NULL inode\n", __func__); goto out; } - DPRINTK("ncp_make_open: opened=%d, volume # %u, dir entry # %u\n", + ncp_dbg(1, "opened=%d, volume # %u, dir entry # %u\n", atomic_read(&NCP_FINFO(inode)->opened), NCP_FINFO(inode)->volNumber, NCP_FINFO(inode)->dirEntNum); @@ -75,7 +73,7 @@ int ncp_make_open(struct inode *inode, int right) break; } if (result) { - PPRINTK("ncp_make_open: failed, result=%d\n", result); + ncp_vdbg("failed, result=%d\n", result); goto out_unlock; } /* @@ -87,7 +85,7 @@ int ncp_make_open(struct inode *inode, int right) } access = NCP_FINFO(inode)->access; - PPRINTK("ncp_make_open: file open, access=%x\n", access); + ncp_vdbg("file open, access=%x\n", access); if (access == right || access == O_RDWR) { atomic_inc(&NCP_FINFO(inode)->opened); error = 0; @@ -111,11 +109,7 @@ ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) void* freepage; size_t freelen; - DPRINTK("ncp_file_read: enter %s/%s\n", - dentry->d_parent->d_name.name, dentry->d_name.name); - - if (!ncp_conn_valid(NCP_SERVER(inode))) - return -EIO; + ncp_dbg(1, "enter %pd2\n", dentry); pos = *ppos; @@ -132,7 +126,7 @@ ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) error = ncp_make_open(inode, O_RDONLY); if (error) { - DPRINTK(KERN_ERR "ncp_file_read: open failed, error=%d\n", error); + ncp_dbg(1, "open failed, error=%d\n", error); return error; } @@ -173,8 +167,7 @@ ncp_file_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) file_accessed(file); - DPRINTK("ncp_file_read: exit %s/%s\n", - dentry->d_parent->d_name.name, dentry->d_name.name); + ncp_dbg(1, "exit %pd2\n", dentry); outrel: ncp_inode_close(inode); return already_read ? already_read : error; @@ -191,15 +184,12 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t * int errno; void* bouncebuffer; - DPRINTK("ncp_file_write: enter %s/%s\n", - dentry->d_parent->d_name.name, dentry->d_name.name); - if (!ncp_conn_valid(NCP_SERVER(inode))) - return -EIO; + ncp_dbg(1, "enter %pd2\n", dentry); if ((ssize_t) count < 0) return -EINVAL; pos = *ppos; if (file->f_flags & O_APPEND) { - pos = inode->i_size; + pos = i_size_read(inode); } if (pos + count > MAX_NON_LFS && !(file->f_flags&O_LARGEFILE)) { @@ -223,13 +213,17 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t * return 0; errno = ncp_make_open(inode, O_WRONLY); if (errno) { - DPRINTK(KERN_ERR "ncp_file_write: open failed, error=%d\n", errno); + ncp_dbg(1, "open failed, error=%d\n", errno); return errno; } bufsize = NCP_SERVER(inode)->buffer_size; already_written = 0; + errno = file_update_time(file); + if (errno) + goto outrel; + bouncebuffer = vmalloc(bufsize); if (!bouncebuffer) { errno = -EIO; /* -ENOMEM */ @@ -261,15 +255,15 @@ ncp_file_write(struct file *file, const char __user *buf, size_t count, loff_t * } vfree(bouncebuffer); - file_update_time(file); - *ppos = pos; - if (pos > inode->i_size) { - inode->i_size = pos; + if (pos > i_size_read(inode)) { + mutex_lock(&inode->i_mutex); + if (pos > i_size_read(inode)) + i_size_write(inode, pos); + mutex_unlock(&inode->i_mutex); } - DPRINTK("ncp_file_write: exit %s/%s\n", - dentry->d_parent->d_name.name, dentry->d_name.name); + ncp_dbg(1, "exit %pd2\n", dentry); outrel: ncp_inode_close(inode); return already_written ? already_written : errno; @@ -277,26 +271,17 @@ outrel: static int ncp_release(struct inode *inode, struct file *file) { if (ncp_make_closed(inode)) { - DPRINTK("ncp_release: failed to close\n"); + ncp_dbg(1, "failed to close\n"); } return 0; } -static loff_t ncp_remote_llseek(struct file *file, loff_t offset, int origin) -{ - loff_t ret; - lock_kernel(); - ret = generic_file_llseek_unlocked(file, offset, origin); - unlock_kernel(); - return ret; -} - const struct file_operations ncp_file_operations = { - .llseek = ncp_remote_llseek, + .llseek = generic_file_llseek, .read = ncp_file_read, .write = ncp_file_write, - .ioctl = ncp_ioctl, + .unlocked_ioctl = ncp_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = ncp_compat_ioctl, #endif diff --git a/fs/ncpfs/getopt.c b/fs/ncpfs/getopt.c index 0af3349de85..344889cd120 100644 --- a/fs/ncpfs/getopt.c +++ b/fs/ncpfs/getopt.c @@ -2,6 +2,8 @@ * getopt.c */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/kernel.h> #include <linux/string.h> @@ -46,29 +48,28 @@ int ncp_getopt(const char *caller, char **options, const struct ncp_option *opts if (opts->has_arg & OPT_NOPARAM) { return opts->val; } - printk(KERN_INFO "%s: the %s option requires an argument\n", - caller, token); + pr_info("%s: the %s option requires an argument\n", + caller, token); return -EINVAL; } if (opts->has_arg & OPT_INT) { - char* v; + int rc = kstrtoul(val, 0, value); - *value = simple_strtoul(val, &v, 0); - if (!*v) { - return opts->val; + if (rc) { + pr_info("%s: invalid numeric value in %s=%s\n", + caller, token, val); + return rc; } - printk(KERN_INFO "%s: invalid numeric value in %s=%s\n", - caller, token, val); - return -EDOM; + return opts->val; } if (opts->has_arg & OPT_STRING) { return opts->val; } - printk(KERN_INFO "%s: unexpected argument %s to the %s option\n", + pr_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); + pr_info("%s: Unrecognized mount option %s\n", caller, token); return -EOPNOTSUPP; } diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c index cf98da1be23..e31e589369a 100644 --- a/fs/ncpfs/inode.c +++ b/fs/ncpfs/inode.c @@ -9,9 +9,10 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> -#include <asm/system.h> #include <asm/uaccess.h> #include <asm/byteorder.h> @@ -26,16 +27,14 @@ #include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/init.h> -#include <linux/smp_lock.h> #include <linux/vfs.h> #include <linux/mount.h> #include <linux/seq_file.h> - -#include <linux/ncp_fs.h> +#include <linux/namei.h> #include <net/sock.h> -#include "ncplib_kernel.h" +#include "ncp_fs.h" #include "getopt.h" #define NCP_DEFAULT_FILE_MODE 0600 @@ -43,10 +42,10 @@ #define NCP_DEFAULT_TIME_OUT 10 #define NCP_DEFAULT_RETRY_COUNT 20 -static void ncp_delete_inode(struct inode *); +static void ncp_evict_inode(struct inode *); static void ncp_put_super(struct super_block *); static int ncp_statfs(struct dentry *, struct kstatfs *); -static int ncp_show_options(struct seq_file *, struct vfsmount *); +static int ncp_show_options(struct seq_file *, struct dentry *); static struct kmem_cache * ncp_inode_cachep; @@ -59,11 +58,17 @@ static struct inode *ncp_alloc_inode(struct super_block *sb) return &ei->vfs_inode; } -static void ncp_destroy_inode(struct inode *inode) +static void ncp_i_callback(struct rcu_head *head) { + struct inode *inode = container_of(head, struct inode, i_rcu); kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode)); } +static void ncp_destroy_inode(struct inode *inode) +{ + call_rcu(&inode->i_rcu, ncp_i_callback); +} + static void init_once(void *foo) { struct ncp_inode_info *ei = (struct ncp_inode_info *) foo; @@ -86,11 +91,17 @@ static int init_inodecache(void) static void destroy_inodecache(void) { + /* + * Make sure all delayed rcu free inodes are flushed before we + * destroy cache. + */ + rcu_barrier(); kmem_cache_destroy(ncp_inode_cachep); } static int ncp_remount(struct super_block *sb, int *flags, char* data) { + sync_filesystem(sb); *flags |= MS_NODIRATIME; return 0; } @@ -100,7 +111,7 @@ static const struct super_operations ncp_sops = .alloc_inode = ncp_alloc_inode, .destroy_inode = ncp_destroy_inode, .drop_inode = generic_delete_inode, - .delete_inode = ncp_delete_inode, + .evict_inode = ncp_evict_inode, .put_super = ncp_put_super, .statfs = ncp_statfs, .remount_fs = ncp_remount, @@ -124,7 +135,7 @@ void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo) NCP_FINFO(inode)->access = nwinfo->access; memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle, sizeof(nwinfo->file_handle)); - DPRINTK("ncp_update_inode: updated %s, volnum=%d, dirent=%u\n", + ncp_dbg(1, "updated %s, volnum=%d, dirent=%u\n", nwinfo->i.entryName, NCP_FINFO(inode)->volNumber, NCP_FINFO(inode)->dirEntNum); } @@ -132,14 +143,13 @@ void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo) static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi) { /* NFS namespace mode overrides others if it's set. */ - DPRINTK(KERN_DEBUG "ncp_update_dates_and_mode: (%s) nfs.mode=0%o\n", - nwi->entryName, nwi->nfs.mode); + ncp_dbg(1, "(%s) nfs.mode=0%o\n", nwi->entryName, nwi->nfs.mode); if (nwi->nfs.mode) { /* XXX Security? */ inode->i_mode = nwi->nfs.mode; } - inode->i_blocks = (inode->i_size + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT; + inode->i_blocks = (i_size_read(inode) + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT; inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate); inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate); @@ -158,18 +168,21 @@ static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo) inode->i_mode = server->m.dir_mode; /* for directories dataStreamSize seems to be some Object ID ??? */ - inode->i_size = NCP_BLOCK_SIZE; + i_size_write(inode, NCP_BLOCK_SIZE); } else { + u32 size; + inode->i_mode = server->m.file_mode; - inode->i_size = le32_to_cpu(nwi->dataStreamSize); + size = le32_to_cpu(nwi->dataStreamSize); + i_size_write(inode, size); #ifdef CONFIG_NCPFS_EXTRAS if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS)) && (nwi->attributes & aSHARED)) { switch (nwi->attributes & (aHIDDEN|aSYSTEM)) { case aHIDDEN: if (server->m.flags & NCP_MOUNT_SYMLINKS) { - if (/* (inode->i_size >= NCP_MIN_SYMLINK_SIZE) - && */ (inode->i_size <= NCP_MAX_SYMLINK_SIZE)) { + if (/* (size >= NCP_MIN_SYMLINK_SIZE) + && */ (size <= NCP_MAX_SYMLINK_SIZE)) { inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK; NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK; break; @@ -208,7 +221,7 @@ void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo) } /* - * Fill in the inode based on the ncp_entry_info structure. + * Fill in the inode based on the ncp_entry_info structure. Used only for brand new inodes. */ static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo) { @@ -218,9 +231,9 @@ static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo) ncp_update_attrs(inode, nwinfo); - DDPRINTK("ncp_read_inode: inode->i_mode = %u\n", inode->i_mode); + ncp_dbg(2, "inode->i_mode = %u\n", inode->i_mode); - inode->i_nlink = 1; + set_nlink(inode, 1); inode->i_uid = server->m.uid; inode->i_gid = server->m.gid; @@ -246,7 +259,7 @@ ncp_iget(struct super_block *sb, struct ncp_entry_info *info) struct inode *inode; if (info == NULL) { - printk(KERN_ERR "ncp_iget: info is NULL\n"); + pr_err("%s: info is NULL\n", __func__); return NULL; } @@ -254,6 +267,7 @@ ncp_iget(struct super_block *sb, struct ncp_entry_info *info) if (inode) { atomic_set(&NCP_FINFO(inode)->opened, info->opened); + inode->i_mapping->backing_dev_info = sb->s_bdi; inode->i_ino = info->ino; ncp_set_attr(inode, info); if (S_ISREG(inode->i_mode)) { @@ -277,47 +291,57 @@ ncp_iget(struct super_block *sb, struct ncp_entry_info *info) } insert_inode_hash(inode); } else - printk(KERN_ERR "ncp_iget: iget failed!\n"); + pr_err("%s: iget failed!\n", __func__); return inode; } static void -ncp_delete_inode(struct inode *inode) +ncp_evict_inode(struct inode *inode) { - truncate_inode_pages(&inode->i_data, 0); + truncate_inode_pages_final(&inode->i_data); + clear_inode(inode); if (S_ISDIR(inode->i_mode)) { - DDPRINTK("ncp_delete_inode: put directory %ld\n", inode->i_ino); + ncp_dbg(2, "put directory %ld\n", inode->i_ino); } if (ncp_make_closed(inode) != 0) { /* We can't do anything but complain. */ - printk(KERN_ERR "ncp_delete_inode: could not close\n"); + pr_err("%s: could not close\n", __func__); } - clear_inode(inode); } static void ncp_stop_tasks(struct ncp_server *server) { struct sock* sk = server->ncp_sock->sk; - + + lock_sock(sk); sk->sk_error_report = server->error_report; sk->sk_data_ready = server->data_ready; sk->sk_write_space = server->write_space; + release_sock(sk); del_timer_sync(&server->timeout_tm); - flush_scheduled_work(); + + flush_work(&server->rcv.tq); + if (sk->sk_socket->type == SOCK_STREAM) + flush_work(&server->tx.tq); + else + flush_work(&server->timeout_tq); } -static int ncp_show_options(struct seq_file *seq, struct vfsmount *mnt) +static int ncp_show_options(struct seq_file *seq, struct dentry *root) { - struct ncp_server *server = NCP_SBP(mnt->mnt_sb); + struct ncp_server *server = NCP_SBP(root->d_sb); unsigned int tmp; - if (server->m.uid != 0) - seq_printf(seq, ",uid=%u", server->m.uid); - if (server->m.gid != 0) - seq_printf(seq, ",gid=%u", server->m.gid); - if (server->m.mounted_uid != 0) - seq_printf(seq, ",owner=%u", server->m.mounted_uid); + if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID)) + seq_printf(seq, ",uid=%u", + from_kuid_munged(&init_user_ns, server->m.uid)); + if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID)) + seq_printf(seq, ",gid=%u", + from_kgid_munged(&init_user_ns, server->m.gid)); + if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID)) + seq_printf(seq, ",owner=%u", + from_kuid_munged(&init_user_ns, server->m.mounted_uid)); tmp = server->m.file_mode & S_IALLUGO; if (tmp != NCP_DEFAULT_FILE_MODE) seq_printf(seq, ",mode=0%o", tmp); @@ -362,13 +386,13 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) data->flags = 0; data->int_flags = 0; - data->mounted_uid = 0; + data->mounted_uid = GLOBAL_ROOT_UID; data->wdog_pid = NULL; data->ncp_fd = ~0; data->time_out = NCP_DEFAULT_TIME_OUT; data->retry_count = NCP_DEFAULT_RETRY_COUNT; - data->uid = 0; - data->gid = 0; + data->uid = GLOBAL_ROOT_UID; + data->gid = GLOBAL_ROOT_GID; data->file_mode = NCP_DEFAULT_FILE_MODE; data->dir_mode = NCP_DEFAULT_DIR_MODE; data->info_fd = -1; @@ -380,13 +404,25 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) goto err; switch (optval) { case 'u': - data->uid = optint; + data->uid = make_kuid(current_user_ns(), optint); + if (!uid_valid(data->uid)) { + ret = -EINVAL; + goto err; + } break; case 'g': - data->gid = optint; + data->gid = make_kgid(current_user_ns(), optint); + if (!gid_valid(data->gid)) { + ret = -EINVAL; + goto err; + } break; case 'o': - data->mounted_uid = optint; + data->mounted_uid = make_kuid(current_user_ns(), optint); + if (!uid_valid(data->mounted_uid)) { + ret = -EINVAL; + goto err; + } break; case 'm': data->file_mode = optint; @@ -434,9 +470,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) { struct ncp_mount_data_kernel data; struct ncp_server *server; - struct file *ncp_filp; struct inode *root_inode; - struct inode *sock_inode; struct socket *sock; int error; int default_bufsize; @@ -445,7 +479,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) #endif struct ncp_entry_info finfo; - data.wdog_pid = NULL; + memset(&data, 0, sizeof(data)); server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL); if (!server) return -ENOMEM; @@ -461,13 +495,13 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) data.flags = md->flags; data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE; - data.mounted_uid = md->mounted_uid; + data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid); data.wdog_pid = find_get_pid(md->wdog_pid); data.ncp_fd = md->ncp_fd; data.time_out = md->time_out; data.retry_count = md->retry_count; - data.uid = md->uid; - data.gid = md->gid; + data.uid = make_kuid(current_user_ns(), md->uid); + data.gid = make_kgid(current_user_ns(), md->gid); data.file_mode = md->file_mode; data.dir_mode = md->dir_mode; data.info_fd = -1; @@ -480,18 +514,16 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data; data.flags = md->flags; - data.int_flags = 0; - data.mounted_uid = md->mounted_uid; + data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid); data.wdog_pid = find_get_pid(md->wdog_pid); data.ncp_fd = md->ncp_fd; data.time_out = md->time_out; data.retry_count = md->retry_count; - data.uid = md->uid; - data.gid = md->gid; + data.uid = make_kuid(current_user_ns(), md->uid); + data.gid = make_kgid(current_user_ns(), 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: @@ -503,18 +535,14 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) goto out; break; } - error = -EBADF; - ncp_filp = fget(data.ncp_fd); - if (!ncp_filp) + error = -EINVAL; + if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) || + !gid_valid(data.gid)) goto out; - error = -ENOTSOCK; - sock_inode = ncp_filp->f_path.dentry->d_inode; - if (!S_ISSOCK(sock_inode->i_mode)) - goto out_fput; - sock = SOCKET_I(sock_inode); + sock = sockfd_lookup(data.ncp_fd, &error); if (!sock) - goto out_fput; - + goto out; + if (sock->type == SOCK_STREAM) default_bufsize = 0xF000; else @@ -526,31 +554,26 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) sb->s_blocksize_bits = 10; sb->s_magic = NCP_SUPER_MAGIC; sb->s_op = &ncp_sops; + sb->s_d_op = &ncp_dentry_operations; + sb->s_bdi = &server->bdi; server = NCP_SBP(sb); memset(server, 0, sizeof(*server)); - server->ncp_filp = ncp_filp; + error = bdi_setup_and_register(&server->bdi, "ncpfs", BDI_CAP_MAP_COPY); + if (error) + goto out_fput; + 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_path.dentry->d_inode; - if (!S_ISSOCK(sock_inode->i_mode)) - goto out_fput2; - info_sock = SOCKET_I(sock_inode); + struct socket *info_sock = sockfd_lookup(data.info_fd, &error); if (!info_sock) - goto out_fput2; + goto out_bdi; + server->info_sock = info_sock; error = -EBADFD; if (info_sock->type != SOCK_STREAM) goto out_fput2; - server->info_sock = info_sock; } /* server->lock = 0; */ @@ -560,10 +583,12 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) /* server->conn_status = 0; */ /* server->root_dentry = NULL; */ /* server->root_setuped = 0; */ + mutex_init(&server->root_setup_lock); #ifdef CONFIG_NCPFS_PACKET_SIGNING /* server->sign_wanted = 0; */ /* server->sign_active = 0; */ #endif + init_rwsem(&server->auth_rwsem); server->auth.auth_type = NCP_AUTH_NONE; /* server->auth.object_name_len = 0; */ /* server->auth.object_name = NULL; */ @@ -572,11 +597,11 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) /* server->priv.data = NULL; */ server->m = data; - /* Althought anything producing this is buggy, it happens + /* Although anything producing this is buggy, it happens now because of PATH_MAX changes.. */ if (server->m.time_out < 1) { server->m.time_out = 10; - printk(KERN_INFO "You need to recompile your ncpfs utils..\n"); + pr_info("You need to recompile your ncpfs utils..\n"); } server->m.time_out = server->m.time_out * HZ / 100; server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG; @@ -588,16 +613,12 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) server->nls_io = load_nls_default(); #endif /* CONFIG_NCPFS_NLS */ - server->dentry_ttl = 0; /* no caching */ + atomic_set(&server->dentry_ttl, 0); /* no caching */ INIT_LIST_HEAD(&server->tx.requests); mutex_init(&server->rcv.creq_mutex); server->tx.creq = NULL; server->rcv.creq = NULL; - server->data_ready = sock->sk->sk_data_ready; - server->write_space = sock->sk->sk_write_space; - server->error_report = sock->sk->sk_error_report; - sock->sk->sk_user_data = server; init_timer(&server->timeout_tm); #undef NCP_PACKET_SIZE @@ -614,6 +635,11 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) if (server->rxbuf == NULL) goto out_txbuf; + lock_sock(sock->sk); + server->data_ready = sock->sk->sk_data_ready; + server->write_space = sock->sk->sk_write_space; + server->error_report = sock->sk->sk_error_report; + sock->sk->sk_user_data = server; sock->sk->sk_data_ready = ncp_tcp_data_ready; sock->sk->sk_error_report = ncp_tcp_error_report; if (sock->type == SOCK_STREAM) { @@ -629,13 +655,14 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) server->timeout_tm.data = (unsigned long)server; server->timeout_tm.function = ncpdgram_timeout_call; } + release_sock(sock->sk); ncp_lock_server(server); error = ncp_connect(server); ncp_unlock_server(server); if (error < 0) goto out_rxbuf; - DPRINTK("ncp_fill_super: NCP_SBP(sb) = %x\n", (int) NCP_SBP(sb)); + ncp_dbg(1, "NCP_SBP(sb) = %p\n", NCP_SBP(sb)); error = -EMSGSIZE; /* -EREMOTESIDEINCOMPATIBLE */ #ifdef CONFIG_NCPFS_PACKET_SIGNING @@ -653,15 +680,17 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) goto out_disconnect; } } + ncp_lock_server(server); if (options & 2) server->sign_wanted = 1; + ncp_unlock_server(server); } else #endif /* CONFIG_NCPFS_PACKET_SIGNING */ if (ncp_negotiate_buffersize(server, default_bufsize, &(server->buffer_size)) != 0) goto out_disconnect; - DPRINTK("ncpfs: bufsize = %d\n", server->buffer_size); + ncp_dbg(1, "bufsize = %d\n", server->buffer_size); memset(&finfo, 0, sizeof(finfo)); finfo.i.attributes = aDIR; @@ -690,15 +719,12 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) root_inode = ncp_iget(sb, &finfo); if (!root_inode) goto out_disconnect; - DPRINTK("ncp_fill_super: root vol=%d\n", NCP_FINFO(root_inode)->volNumber); - sb->s_root = d_alloc_root(root_inode); + ncp_dbg(1, "root vol=%d\n", NCP_FINFO(root_inode)->volNumber); + sb->s_root = d_make_root(root_inode); if (!sb->s_root) - goto out_no_root; - sb->s_root->d_op = &ncp_root_dentry_operations; + goto out_disconnect; return 0; -out_no_root: - iput(root_inode); out_disconnect: ncp_lock_server(server); ncp_disconnect(server); @@ -715,16 +741,16 @@ out_nls: unload_nls(server->nls_io); unload_nls(server->nls_vol); #endif + mutex_destroy(&server->rcv.creq_mutex); + mutex_destroy(&server->root_setup_lock); + mutex_destroy(&server->mutex); out_fput2: - if (server->info_filp) - fput(server->info_filp); + if (server->info_sock) + sockfd_put(server->info_sock); +out_bdi: + bdi_destroy(&server->bdi); out_fput: - /* 23/12/1998 Marcin Dalecki <dalecki@cs.net.pl>: - * - * The previously used put_filp(ncp_filp); was bogous, since - * it doesn't proper unlocking. - */ - fput(ncp_filp); + sockfd_put(sock); out: put_pid(data.wdog_pid); sb->s_fs_info = NULL; @@ -732,39 +758,44 @@ out: return error; } +static void delayed_free(struct rcu_head *p) +{ + struct ncp_server *server = container_of(p, struct ncp_server, rcu); +#ifdef CONFIG_NCPFS_NLS + /* unload the NLS charsets */ + unload_nls(server->nls_vol); + unload_nls(server->nls_io); +#endif /* CONFIG_NCPFS_NLS */ + kfree(server); +} + static void ncp_put_super(struct super_block *sb) { struct ncp_server *server = NCP_SBP(sb); - lock_kernel(); - ncp_lock_server(server); ncp_disconnect(server); ncp_unlock_server(server); ncp_stop_tasks(server); -#ifdef CONFIG_NCPFS_NLS - /* unload the NLS charsets */ - unload_nls(server->nls_vol); - unload_nls(server->nls_io); -#endif /* CONFIG_NCPFS_NLS */ + mutex_destroy(&server->rcv.creq_mutex); + mutex_destroy(&server->root_setup_lock); + mutex_destroy(&server->mutex); - if (server->info_filp) - fput(server->info_filp); - fput(server->ncp_filp); + if (server->info_sock) + sockfd_put(server->info_sock); + sockfd_put(server->ncp_sock); kill_pid(server->m.wdog_pid, SIGTERM, 1); put_pid(server->m.wdog_pid); + bdi_destroy(&server->bdi); kfree(server->priv.data); kfree(server->auth.object_name); vfree(server->rxbuf); vfree(server->txbuf); vfree(server->packet); - sb->s_fs_info = NULL; - kfree(server); - - unlock_kernel(); + call_rcu(&server->rcu, delayed_free); } static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf) @@ -843,10 +874,12 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr) result = -EIO; - lock_kernel(); - server = NCP_SERVER(inode); - if ((!server) || !ncp_conn_valid(server)) + if (!server) /* How this could happen? */ + goto out; + + result = -EPERM; + if (IS_DEADDIR(dentry->d_inode)) goto out; /* ageing the dentry to force validation */ @@ -857,12 +890,10 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr) goto out; result = -EPERM; - if (((attr->ia_valid & ATTR_UID) && - (attr->ia_uid != server->m.uid))) + if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid)) goto out; - if (((attr->ia_valid & ATTR_GID) && - (attr->ia_gid != server->m.gid))) + if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid)) goto out; if (((attr->ia_valid & ATTR_MODE) && @@ -916,9 +947,8 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr) tmpattr.ia_valid = ATTR_MODE; tmpattr.ia_mode = attr->ia_mode; - result = inode_setattr(inode, &tmpattr); - if (result) - goto out; + setattr_copy(inode, &tmpattr); + mark_inode_dirty(inode); } } #endif @@ -930,8 +960,7 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr) if ((attr->ia_valid & ATTR_SIZE) != 0) { int written; - DPRINTK("ncpfs: trying to change size to %ld\n", - attr->ia_size); + ncp_dbg(1, "trying to change size to %llu\n", attr->ia_size); if ((result = ncp_make_open(inode, O_WRONLY)) < 0) { result = -EACCES; @@ -946,15 +975,10 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr) result = ncp_make_closed(inode); if (result) goto out; - { - struct iattr tmpattr; - - tmpattr.ia_valid = ATTR_SIZE; - tmpattr.ia_size = attr->ia_size; - - result = inode_setattr(inode, &tmpattr); - if (result) - goto out; + + if (attr->ia_size != i_size_read(inode)) { + truncate_setsize(inode, attr->ia_size); + mark_inode_dirty(inode); } } if ((attr->ia_valid & ATTR_CTIME) != 0) { @@ -977,8 +1001,6 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr) result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode), inode, info_mask, &info); if (result != 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 @@ -994,31 +1016,37 @@ int ncp_notify_change(struct dentry *dentry, struct iattr *attr) NCP_FINFO(inode)->nwattr = info.attributes; #endif } - if (!result) - result = inode_setattr(inode, attr); + if (result) + goto out; + + setattr_copy(inode, attr); + mark_inode_dirty(inode); + out: - unlock_kernel(); + if (result > 0) + result = -EACCES; return result; } -static int ncp_get_sb(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data, struct vfsmount *mnt) +static struct dentry *ncp_mount(struct file_system_type *fs_type, + int flags, const char *dev_name, void *data) { - return get_sb_nodev(fs_type, flags, data, ncp_fill_super, mnt); + return mount_nodev(fs_type, flags, data, ncp_fill_super); } static struct file_system_type ncp_fs_type = { .owner = THIS_MODULE, .name = "ncpfs", - .get_sb = ncp_get_sb, + .mount = ncp_mount, .kill_sb = kill_anon_super, .fs_flags = FS_BINARY_MOUNTDATA, }; +MODULE_ALIAS_FS("ncpfs"); static int __init init_ncp_fs(void) { int err; - DPRINTK("ncpfs: init_ncp_fs called\n"); + ncp_dbg(1, "called\n"); err = init_inodecache(); if (err) @@ -1035,7 +1063,7 @@ out1: static void __exit exit_ncp_fs(void) { - DPRINTK("ncpfs: exit_ncp_fs called\n"); + ncp_dbg(1, "called\n"); unregister_filesystem(&ncp_fs_type); destroy_inodecache(); } diff --git a/fs/ncpfs/ioctl.c b/fs/ncpfs/ioctl.c index ec8f45f12e0..d5659d96ee7 100644 --- a/fs/ncpfs/ioctl.c +++ b/fs/ncpfs/ioctl.c @@ -15,16 +15,14 @@ #include <linux/time.h> #include <linux/mm.h> #include <linux/mount.h> +#include <linux/slab.h> #include <linux/highuid.h> -#include <linux/smp_lock.h> #include <linux/vmalloc.h> #include <linux/sched.h> -#include <linux/ncp_fs.h> - #include <asm/uaccess.h> -#include "ncplib_kernel.h" +#include "ncp_fs.h" /* maximum limit for ncp_objectname_ioctl */ #define NCP_OBJECT_NAME_MAX_LEN 4096 @@ -34,25 +32,20 @@ #define NCP_PACKET_SIZE_INTERNAL 65536 static int -ncp_get_fs_info(struct ncp_server * server, struct file *file, +ncp_get_fs_info(struct ncp_server * server, struct inode *inode, struct ncp_fs_info __user *arg) { - struct inode *inode = file->f_path.dentry->d_inode; struct ncp_fs_info info; - if (file_permission(file, MAY_WRITE) != 0 - && current_uid() != server->m.mounted_uid) - return -EACCES; - if (copy_from_user(&info, arg, sizeof(info))) return -EFAULT; if (info.version != NCP_GET_FS_INFO_VERSION) { - DPRINTK("info.version invalid: %d\n", info.version); + ncp_dbg(1, "info.version invalid: %d\n", info.version); return -EINVAL; } /* TODO: info.addr = server->m.serv_addr; */ - SET_UID(info.mounted_uid, server->m.mounted_uid); + SET_UID(info.mounted_uid, from_kuid_munged(current_user_ns(), server->m.mounted_uid)); info.connection = server->connection; info.buffer_size = server->buffer_size; info.volume_number = NCP_FINFO(inode)->volNumber; @@ -64,24 +57,19 @@ ncp_get_fs_info(struct ncp_server * server, struct file *file, } static int -ncp_get_fs_info_v2(struct ncp_server * server, struct file *file, +ncp_get_fs_info_v2(struct ncp_server * server, struct inode *inode, struct ncp_fs_info_v2 __user * arg) { - struct inode *inode = file->f_path.dentry->d_inode; struct ncp_fs_info_v2 info2; - if (file_permission(file, MAY_WRITE) != 0 - && current_uid() != server->m.mounted_uid) - return -EACCES; - if (copy_from_user(&info2, arg, sizeof(info2))) return -EFAULT; if (info2.version != NCP_GET_FS_INFO_VERSION_V2) { - DPRINTK("info.version invalid: %d\n", info2.version); + ncp_dbg(1, "info.version invalid: %d\n", info2.version); return -EINVAL; } - info2.mounted_uid = server->m.mounted_uid; + info2.mounted_uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid); info2.connection = server->connection; info2.buffer_size = server->buffer_size; info2.volume_number = NCP_FINFO(inode)->volNumber; @@ -135,24 +123,19 @@ struct compat_ncp_privatedata_ioctl #define NCP_IOC_SETPRIVATEDATA_32 _IOR('n', 10, struct compat_ncp_privatedata_ioctl) static int -ncp_get_compat_fs_info_v2(struct ncp_server * server, struct file *file, +ncp_get_compat_fs_info_v2(struct ncp_server * server, struct inode *inode, struct compat_ncp_fs_info_v2 __user * arg) { - struct inode *inode = file->f_path.dentry->d_inode; struct compat_ncp_fs_info_v2 info2; - if (file_permission(file, MAY_WRITE) != 0 - && current_uid() != server->m.mounted_uid) - return -EACCES; - if (copy_from_user(&info2, arg, sizeof(info2))) return -EFAULT; if (info2.version != NCP_GET_FS_INFO_VERSION_V2) { - DPRINTK("info.version invalid: %d\n", info2.version); + ncp_dbg(1, "info.version invalid: %d\n", info2.version); return -EINVAL; } - info2.mounted_uid = server->m.mounted_uid; + info2.mounted_uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid); info2.connection = server->connection; info2.buffer_size = server->buffer_size; info2.volume_number = NCP_FINFO(inode)->volNumber; @@ -181,11 +164,8 @@ ncp_set_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg) struct nls_table *iocharset; struct nls_table *oldset_io; struct nls_table *oldset_cp; - - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - if (server->root_setuped) - return -EBUSY; + int utf8; + int err; if (copy_from_user(&user, arg, sizeof(user))) return -EFAULT; @@ -205,28 +185,40 @@ ncp_set_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg) user.iocharset[NCP_IOCSNAME_LEN] = 0; if (!user.iocharset[0] || !strcmp(user.iocharset, "default")) { iocharset = load_nls_default(); - NCP_CLR_FLAG(server, NCP_FLAG_UTF8); + utf8 = 0; } else if (!strcmp(user.iocharset, "utf8")) { iocharset = load_nls_default(); - NCP_SET_FLAG(server, NCP_FLAG_UTF8); + utf8 = 1; } else { iocharset = load_nls(user.iocharset); if (!iocharset) { unload_nls(codepage); return -EBADRQC; } - NCP_CLR_FLAG(server, NCP_FLAG_UTF8); + utf8 = 0; } - oldset_cp = server->nls_vol; - server->nls_vol = codepage; - oldset_io = server->nls_io; - server->nls_io = iocharset; - + mutex_lock(&server->root_setup_lock); + if (server->root_setuped) { + oldset_cp = codepage; + oldset_io = iocharset; + err = -EBUSY; + } else { + if (utf8) + NCP_SET_FLAG(server, NCP_FLAG_UTF8); + else + NCP_CLR_FLAG(server, NCP_FLAG_UTF8); + oldset_cp = server->nls_vol; + server->nls_vol = codepage; + oldset_io = server->nls_io; + server->nls_io = iocharset; + err = 0; + } + mutex_unlock(&server->root_setup_lock); unload_nls(oldset_cp); unload_nls(oldset_io); - return 0; + return err; } static int @@ -236,6 +228,7 @@ ncp_get_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg) int len; memset(&user, 0, sizeof(user)); + mutex_lock(&server->root_setup_lock); if (server->nls_vol && server->nls_vol->charset) { len = strlen(server->nls_vol->charset); if (len > NCP_IOCSNAME_LEN) @@ -253,6 +246,7 @@ ncp_get_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg) strncpy(user.iocharset, server->nls_io->charset, len); user.iocharset[len] = 0; } + mutex_unlock(&server->root_setup_lock); if (copy_to_user(arg, &user, sizeof(user))) return -EFAULT; @@ -260,25 +254,19 @@ ncp_get_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg) } #endif /* CONFIG_NCPFS_NLS */ -static int __ncp_ioctl(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) +static long __ncp_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg) { struct ncp_server *server = NCP_SERVER(inode); int result; struct ncp_ioctl_request request; char* bouncebuffer; void __user *argp = (void __user *)arg; - uid_t uid = current_uid(); switch (cmd) { #ifdef CONFIG_COMPAT case NCP_IOC_NCPREQUEST_32: #endif case NCP_IOC_NCPREQUEST: - if (file_permission(filp, MAY_WRITE) != 0 - && uid != server->m.mounted_uid) - return -EACCES; - #ifdef CONFIG_COMPAT if (cmd == NCP_IOC_NCPREQUEST_32) { struct compat_ncp_ioctl_request request32; @@ -313,15 +301,14 @@ static int __ncp_ioctl(struct inode *inode, struct file *filp, server->current_size = request.size; memcpy(server->packet, bouncebuffer, request.size); - result = ncp_request2(server, request.function, + result = ncp_request2(server, request.function, bouncebuffer, NCP_PACKET_SIZE_INTERNAL); if (result < 0) result = -EIO; else result = server->reply_size; ncp_unlock_server(server); - DPRINTK("ncp_ioctl: copy %d bytes\n", - result); + ncp_dbg(1, "copy %d bytes\n", result); if (result >= 0) if (copy_to_user(request.data, bouncebuffer, result)) result = -EFAULT; @@ -330,81 +317,86 @@ static int __ncp_ioctl(struct inode *inode, struct file *filp, case NCP_IOC_CONN_LOGGED_IN: - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; if (!(server->m.int_flags & NCP_IMOUNT_LOGGEDIN_POSSIBLE)) return -EINVAL; + mutex_lock(&server->root_setup_lock); if (server->root_setuped) - return -EBUSY; - server->root_setuped = 1; - return ncp_conn_logged_in(inode->i_sb); + result = -EBUSY; + else { + result = ncp_conn_logged_in(inode->i_sb); + if (result == 0) + server->root_setuped = 1; + } + mutex_unlock(&server->root_setup_lock); + return result; case NCP_IOC_GET_FS_INFO: - return ncp_get_fs_info(server, filp, argp); + return ncp_get_fs_info(server, inode, argp); case NCP_IOC_GET_FS_INFO_V2: - return ncp_get_fs_info_v2(server, filp, argp); + return ncp_get_fs_info_v2(server, inode, argp); #ifdef CONFIG_COMPAT case NCP_IOC_GET_FS_INFO_V2_32: - return ncp_get_compat_fs_info_v2(server, filp, argp); + return ncp_get_compat_fs_info_v2(server, inode, argp); #endif /* we have too many combinations of CONFIG_COMPAT, * CONFIG_64BIT and CONFIG_UID16, so just handle * any of the possible ioctls */ case NCP_IOC_GETMOUNTUID16: - case NCP_IOC_GETMOUNTUID32: - case NCP_IOC_GETMOUNTUID64: - if (file_permission(filp, MAY_READ) != 0 - && uid != server->m.mounted_uid) - return -EACCES; - - if (cmd == NCP_IOC_GETMOUNTUID16) { + { u16 uid; - SET_UID(uid, server->m.mounted_uid); + + SET_UID(uid, from_kuid_munged(current_user_ns(), server->m.mounted_uid)); if (put_user(uid, (u16 __user *)argp)) return -EFAULT; - } else if (cmd == NCP_IOC_GETMOUNTUID32) { - if (put_user(server->m.mounted_uid, - (u32 __user *)argp)) - return -EFAULT; - } else { - if (put_user(server->m.mounted_uid, - (u64 __user *)argp)) - return -EFAULT; + return 0; } + case NCP_IOC_GETMOUNTUID32: + { + uid_t uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid); + if (put_user(uid, (u32 __user *)argp)) + return -EFAULT; return 0; - + } + case NCP_IOC_GETMOUNTUID64: + { + uid_t uid = from_kuid_munged(current_user_ns(), server->m.mounted_uid); + if (put_user(uid, (u64 __user *)argp)) + return -EFAULT; + return 0; + } case NCP_IOC_GETROOT: { struct ncp_setroot_ioctl sr; - if (file_permission(filp, MAY_READ) != 0 - && uid != server->m.mounted_uid) - return -EACCES; - + result = -EACCES; + mutex_lock(&server->root_setup_lock); if (server->m.mounted_vol[0]) { struct dentry* dentry = inode->i_sb->s_root; if (dentry) { struct inode* s_inode = dentry->d_inode; - + if (s_inode) { sr.volNumber = NCP_FINFO(s_inode)->volNumber; sr.dirEntNum = NCP_FINFO(s_inode)->dirEntNum; sr.namespace = server->name_space[sr.volNumber]; + result = 0; } else - DPRINTK("ncpfs: s_root->d_inode==NULL\n"); + ncp_dbg(1, "s_root->d_inode==NULL\n"); } else - DPRINTK("ncpfs: s_root==NULL\n"); + ncp_dbg(1, "s_root==NULL\n"); } else { sr.volNumber = -1; sr.namespace = 0; sr.dirEntNum = 0; + result = 0; } - if (copy_to_user(argp, &sr, sizeof(sr))) - return -EFAULT; - return 0; + mutex_unlock(&server->root_setup_lock); + if (!result && copy_to_user(argp, &sr, sizeof(sr))) + result = -EFAULT; + return result; } case NCP_IOC_SETROOT: @@ -415,103 +407,114 @@ static int __ncp_ioctl(struct inode *inode, struct file *filp, __le32 dosde; struct dentry* dentry; - if (!capable(CAP_SYS_ADMIN)) - { - return -EACCES; - } - if (server->root_setuped) return -EBUSY; if (copy_from_user(&sr, argp, sizeof(sr))) return -EFAULT; - if (sr.volNumber < 0) { - server->m.mounted_vol[0] = 0; - vnum = NCP_NUMBER_OF_VOLUMES; - de = 0; - dosde = 0; - } else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) { - return -EINVAL; - } else if (ncp_mount_subdir(server, sr.volNumber, - sr.namespace, sr.dirEntNum, - &vnum, &de, &dosde)) { - return -ENOENT; - } - - dentry = inode->i_sb->s_root; - server->root_setuped = 1; - if (dentry) { - struct inode* s_inode = dentry->d_inode; - - if (s_inode) { - NCP_FINFO(s_inode)->volNumber = vnum; - NCP_FINFO(s_inode)->dirEntNum = de; - NCP_FINFO(s_inode)->DosDirNum = dosde; + mutex_lock(&server->root_setup_lock); + if (server->root_setuped) + result = -EBUSY; + else { + if (sr.volNumber < 0) { + server->m.mounted_vol[0] = 0; + vnum = NCP_NUMBER_OF_VOLUMES; + de = 0; + dosde = 0; + result = 0; + } else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) { + result = -EINVAL; + } else if (ncp_mount_subdir(server, sr.volNumber, + sr.namespace, sr.dirEntNum, + &vnum, &de, &dosde)) { + result = -ENOENT; } else - DPRINTK("ncpfs: s_root->d_inode==NULL\n"); - } else - DPRINTK("ncpfs: s_root==NULL\n"); + result = 0; + + if (result == 0) { + dentry = inode->i_sb->s_root; + if (dentry) { + struct inode* s_inode = dentry->d_inode; + + if (s_inode) { + NCP_FINFO(s_inode)->volNumber = vnum; + NCP_FINFO(s_inode)->dirEntNum = de; + NCP_FINFO(s_inode)->DosDirNum = dosde; + server->root_setuped = 1; + } else { + ncp_dbg(1, "s_root->d_inode==NULL\n"); + result = -EIO; + } + } else { + ncp_dbg(1, "s_root==NULL\n"); + result = -EIO; + } + } + result = 0; + } + mutex_unlock(&server->root_setup_lock); - return 0; + return result; } -#ifdef CONFIG_NCPFS_PACKET_SIGNING +#ifdef CONFIG_NCPFS_PACKET_SIGNING case NCP_IOC_SIGN_INIT: - if (file_permission(filp, MAY_WRITE) != 0 - && uid != server->m.mounted_uid) - return -EACCES; - - if (argp) { - if (server->sign_wanted) - { - struct ncp_sign_init sign; + { + struct ncp_sign_init sign; + if (argp) if (copy_from_user(&sign, argp, sizeof(sign))) return -EFAULT; - memcpy(server->sign_root,sign.sign_root,8); - memcpy(server->sign_last,sign.sign_last,16); - server->sign_active = 1; + ncp_lock_server(server); + mutex_lock(&server->rcv.creq_mutex); + if (argp) { + if (server->sign_wanted) { + memcpy(server->sign_root,sign.sign_root,8); + memcpy(server->sign_last,sign.sign_last,16); + server->sign_active = 1; + } + /* ignore when signatures not wanted */ + } else { + server->sign_active = 0; } - /* ignore when signatures not wanted */ - } else { - server->sign_active = 0; + mutex_unlock(&server->rcv.creq_mutex); + ncp_unlock_server(server); + return 0; } - return 0; - + case NCP_IOC_SIGN_WANTED: - if (file_permission(filp, MAY_READ) != 0 - && uid != server->m.mounted_uid) - return -EACCES; - - if (put_user(server->sign_wanted, (int __user *)argp)) - return -EFAULT; - return 0; + { + int state; + + ncp_lock_server(server); + state = server->sign_wanted; + ncp_unlock_server(server); + if (put_user(state, (int __user *)argp)) + return -EFAULT; + return 0; + } case NCP_IOC_SET_SIGN_WANTED: { int newstate; - if (file_permission(filp, MAY_WRITE) != 0 - && uid != server->m.mounted_uid) - return -EACCES; - /* get only low 8 bits... */ if (get_user(newstate, (unsigned char __user *)argp)) return -EFAULT; + result = 0; + ncp_lock_server(server); if (server->sign_active) { /* cannot turn signatures OFF when active */ - if (!newstate) return -EINVAL; + if (!newstate) + result = -EINVAL; } else { server->sign_wanted = newstate != 0; } - return 0; + ncp_unlock_server(server); + return result; } #endif /* CONFIG_NCPFS_PACKET_SIGNING */ #ifdef CONFIG_NCPFS_IOCTL_LOCKING case NCP_IOC_LOCKUNLOCK: - if (file_permission(filp, MAY_WRITE) != 0 - && uid != server->m.mounted_uid) - return -EACCES; - { struct ncp_lock_ioctl rqdata; @@ -540,16 +543,13 @@ static int __ncp_ioctl(struct inode *inode, struct file *filp, { return result; } - result = -EIO; - if (!ncp_conn_valid(server)) - goto outrel; result = -EISDIR; if (!S_ISREG(inode->i_mode)) goto outrel; if (rqdata.cmd == NCP_LOCK_CLEAR) { result = ncp_ClearPhysicalRecord(NCP_SERVER(inode), - NCP_FINFO(inode)->file_handle, + NCP_FINFO(inode)->file_handle, rqdata.offset, rqdata.length); if (result > 0) result = 0; /* no such lock */ @@ -572,7 +572,7 @@ static int __ncp_ioctl(struct inode *inode, struct file *filp, rqdata.timeout); if (result > 0) result = -EAGAIN; } -outrel: +outrel: ncp_inode_close(inode); return result; } @@ -580,60 +580,62 @@ outrel: #ifdef CONFIG_COMPAT case NCP_IOC_GETOBJECTNAME_32: - if (uid != server->m.mounted_uid) - return -EACCES; { struct compat_ncp_objectname_ioctl user; size_t outl; if (copy_from_user(&user, argp, sizeof(user))) return -EFAULT; + down_read(&server->auth_rwsem); user.auth_type = server->auth.auth_type; outl = user.object_name_len; user.object_name_len = server->auth.object_name_len; if (outl > user.object_name_len) outl = user.object_name_len; + result = 0; if (outl) { if (copy_to_user(compat_ptr(user.object_name), server->auth.object_name, - outl)) return -EFAULT; + outl)) + result = -EFAULT; } - if (copy_to_user(argp, &user, sizeof(user))) - return -EFAULT; - return 0; + up_read(&server->auth_rwsem); + if (!result && copy_to_user(argp, &user, sizeof(user))) + result = -EFAULT; + return result; } #endif case NCP_IOC_GETOBJECTNAME: - if (uid != server->m.mounted_uid) - return -EACCES; { struct ncp_objectname_ioctl user; size_t outl; if (copy_from_user(&user, argp, sizeof(user))) return -EFAULT; + down_read(&server->auth_rwsem); user.auth_type = server->auth.auth_type; outl = user.object_name_len; user.object_name_len = server->auth.object_name_len; if (outl > user.object_name_len) outl = user.object_name_len; + result = 0; if (outl) { if (copy_to_user(user.object_name, server->auth.object_name, - outl)) return -EFAULT; + outl)) + result = -EFAULT; } - if (copy_to_user(argp, &user, sizeof(user))) - return -EFAULT; - return 0; + up_read(&server->auth_rwsem); + if (!result && copy_to_user(argp, &user, sizeof(user))) + result = -EFAULT; + return result; } #ifdef CONFIG_COMPAT case NCP_IOC_SETOBJECTNAME_32: #endif case NCP_IOC_SETOBJECTNAME: - if (uid != server->m.mounted_uid) - return -EACCES; { struct ncp_objectname_ioctl user; void* newname; @@ -665,9 +667,7 @@ outrel: } else { newname = NULL; } - /* enter critical section */ - /* maybe that kfree can sleep so do that this way */ - /* it is at least more SMP friendly (in future...) */ + down_write(&server->auth_rwsem); oldname = server->auth.object_name; oldnamelen = server->auth.object_name_len; oldprivate = server->priv.data; @@ -677,7 +677,7 @@ outrel: server->auth.object_name = newname; server->priv.len = 0; server->priv.data = NULL; - /* leave critical section */ + up_write(&server->auth_rwsem); kfree(oldprivate); kfree(oldname); return 0; @@ -687,8 +687,6 @@ outrel: case NCP_IOC_GETPRIVATEDATA_32: #endif case NCP_IOC_GETPRIVATEDATA: - if (uid != server->m.mounted_uid) - return -EACCES; { struct ncp_privatedata_ioctl user; size_t outl; @@ -705,14 +703,20 @@ outrel: if (copy_from_user(&user, argp, sizeof(user))) return -EFAULT; + down_read(&server->auth_rwsem); outl = user.len; user.len = server->priv.len; if (outl > user.len) outl = user.len; + result = 0; if (outl) { if (copy_to_user(user.data, server->priv.data, - outl)) return -EFAULT; + outl)) + result = -EFAULT; } + up_read(&server->auth_rwsem); + if (result) + return result; #ifdef CONFIG_COMPAT if (cmd == NCP_IOC_GETPRIVATEDATA_32) { struct compat_ncp_privatedata_ioctl user32; @@ -732,8 +736,6 @@ outrel: case NCP_IOC_SETPRIVATEDATA_32: #endif case NCP_IOC_SETPRIVATEDATA: - if (uid != server->m.mounted_uid) - return -EACCES; { struct ncp_privatedata_ioctl user; void* new; @@ -761,12 +763,12 @@ outrel: } else { new = NULL; } - /* enter critical section */ + down_write(&server->auth_rwsem); old = server->priv.data; oldlen = server->priv.len; server->priv.len = user.len; server->priv.data = new; - /* leave critical section */ + up_write(&server->auth_rwsem); kfree(old); return 0; } @@ -774,17 +776,13 @@ outrel: #ifdef CONFIG_NCPFS_NLS case NCP_IOC_SETCHARSETS: return ncp_set_charsets(server, argp); - + case NCP_IOC_GETCHARSETS: return ncp_get_charsets(server, argp); #endif /* CONFIG_NCPFS_NLS */ case NCP_IOC_SETDENTRYTTL: - if (file_permission(filp, MAY_WRITE) != 0 && - uid != server->m.mounted_uid) - return -EACCES; - { u_int32_t user; @@ -794,13 +792,13 @@ outrel: if (user > 20000) return -EINVAL; user = (user * HZ) / 1000; - server->dentry_ttl = user; + atomic_set(&server->dentry_ttl, user); return 0; } - + case NCP_IOC_GETDENTRYTTL: { - u_int32_t user = (server->dentry_ttl * 1000) / HZ; + u_int32_t user = (atomic_read(&server->dentry_ttl) * 1000) / HZ; if (copy_to_user(argp, &user, sizeof(user))) return -EFAULT; return 0; @@ -810,67 +808,113 @@ outrel: return -EINVAL; } -static int ncp_ioctl_need_write(unsigned int cmd) +long ncp_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { + struct inode *inode = file_inode(filp); + struct ncp_server *server = NCP_SERVER(inode); + kuid_t uid = current_uid(); + int need_drop_write = 0; + long ret; + switch (cmd) { - case NCP_IOC_GET_FS_INFO: - case NCP_IOC_GET_FS_INFO_V2: - case NCP_IOC_NCPREQUEST: - case NCP_IOC_SETDENTRYTTL: - case NCP_IOC_SIGN_INIT: - case NCP_IOC_LOCKUNLOCK: - case NCP_IOC_SET_SIGN_WANTED: - return 1; - case NCP_IOC_GETOBJECTNAME: - case NCP_IOC_SETOBJECTNAME: - case NCP_IOC_GETPRIVATEDATA: - case NCP_IOC_SETPRIVATEDATA: case NCP_IOC_SETCHARSETS: - case NCP_IOC_GETCHARSETS: case NCP_IOC_CONN_LOGGED_IN: - case NCP_IOC_GETDENTRYTTL: - case NCP_IOC_GETMOUNTUID2: - case NCP_IOC_SIGN_WANTED: - case NCP_IOC_GETROOT: case NCP_IOC_SETROOT: - return 0; - default: - /* unknown IOCTL command, assume write */ - return 1; + if (!capable(CAP_SYS_ADMIN)) { + ret = -EPERM; + goto out; + } + break; } -} - -int ncp_ioctl(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) -{ - int ret; - - if (ncp_ioctl_need_write(cmd)) { + if (!uid_eq(server->m.mounted_uid, uid)) { + switch (cmd) { /* - * inside the ioctl(), any failures which - * are because of file_permission() are - * -EACCESS, so it seems consistent to keep - * that here. + * Only mount owner can issue these ioctls. Information + * necessary to authenticate to other NDS servers are + * stored here. */ - if (mnt_want_write(filp->f_path.mnt)) - return -EACCES; + case NCP_IOC_GETOBJECTNAME: + case NCP_IOC_SETOBJECTNAME: + case NCP_IOC_GETPRIVATEDATA: + case NCP_IOC_SETPRIVATEDATA: +#ifdef CONFIG_COMPAT + case NCP_IOC_GETOBJECTNAME_32: + case NCP_IOC_SETOBJECTNAME_32: + case NCP_IOC_GETPRIVATEDATA_32: + case NCP_IOC_SETPRIVATEDATA_32: +#endif + ret = -EACCES; + goto out; + /* + * These require write access on the inode if user id + * does not match. Note that they do not write to the + * file... But old code did mnt_want_write, so I keep + * it as is. Of course not for mountpoint owner, as + * that breaks read-only mounts altogether as ncpmount + * needs working NCP_IOC_NCPREQUEST and + * NCP_IOC_GET_FS_INFO. Some of these codes (setdentryttl, + * signinit, setsignwanted) should be probably restricted + * to owner only, or even more to CAP_SYS_ADMIN). + */ + case NCP_IOC_GET_FS_INFO: + case NCP_IOC_GET_FS_INFO_V2: + case NCP_IOC_NCPREQUEST: + case NCP_IOC_SETDENTRYTTL: + case NCP_IOC_SIGN_INIT: + case NCP_IOC_LOCKUNLOCK: + case NCP_IOC_SET_SIGN_WANTED: +#ifdef CONFIG_COMPAT + case NCP_IOC_GET_FS_INFO_V2_32: + case NCP_IOC_NCPREQUEST_32: +#endif + ret = mnt_want_write_file(filp); + if (ret) + goto out; + need_drop_write = 1; + ret = inode_permission(inode, MAY_WRITE); + if (ret) + goto outDropWrite; + break; + /* + * Read access required. + */ + case NCP_IOC_GETMOUNTUID16: + case NCP_IOC_GETMOUNTUID32: + case NCP_IOC_GETMOUNTUID64: + case NCP_IOC_GETROOT: + case NCP_IOC_SIGN_WANTED: + ret = inode_permission(inode, MAY_READ); + if (ret) + goto out; + break; + /* + * Anybody can read these. + */ + case NCP_IOC_GETCHARSETS: + case NCP_IOC_GETDENTRYTTL: + default: + /* Three codes below are protected by CAP_SYS_ADMIN above. */ + case NCP_IOC_SETCHARSETS: + case NCP_IOC_CONN_LOGGED_IN: + case NCP_IOC_SETROOT: + break; + } } - ret = __ncp_ioctl(inode, filp, cmd, arg); - if (ncp_ioctl_need_write(cmd)) - mnt_drop_write(filp->f_path.mnt); + ret = __ncp_ioctl(inode, cmd, arg); +outDropWrite: + if (need_drop_write) + mnt_drop_write_file(filp); +out: return ret; } #ifdef CONFIG_COMPAT long ncp_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - struct inode *inode = file->f_path.dentry->d_inode; - int ret; + long ret; - lock_kernel(); arg = (unsigned long) compat_ptr(arg); - ret = ncp_ioctl(inode, file, cmd, arg); - unlock_kernel(); + ret = ncp_ioctl(file, cmd, arg); return ret; } #endif diff --git a/fs/ncpfs/mmap.c b/fs/ncpfs/mmap.c index 15458decdb8..b359d12eb35 100644 --- a/fs/ncpfs/mmap.c +++ b/fs/ncpfs/mmap.c @@ -9,18 +9,18 @@ #include <linux/stat.h> #include <linux/time.h> #include <linux/kernel.h> +#include <linux/gfp.h> #include <linux/mm.h> #include <linux/shm.h> #include <linux/errno.h> #include <linux/mman.h> #include <linux/string.h> -#include <linux/slab.h> #include <linux/fcntl.h> -#include <linux/ncp_fs.h> +#include <linux/memcontrol.h> -#include "ncplib_kernel.h" #include <asm/uaccess.h> -#include <asm/system.h> + +#include "ncp_fs.h" /* * Fill in the supplied page for mmap @@ -89,9 +89,10 @@ static int ncp_file_mmap_fault(struct vm_area_struct *area, /* * If I understand ncp_read_kernel() properly, the above always * fetches from the network, here the analogue of disk. - * -- wli + * -- nyc */ count_vm_event(PGMAJFAULT); + mem_cgroup_count_vm_event(area->vm_mm, PGMAJFAULT); return VM_FAULT_MAJOR; } @@ -104,9 +105,9 @@ static const struct vm_operations_struct ncp_file_mmap = /* This is used for a general mmap of a ncp file */ int ncp_mmap(struct file *file, struct vm_area_struct *vma) { - struct inode *inode = file->f_path.dentry->d_inode; + struct inode *inode = file_inode(file); - DPRINTK("ncp_mmap: called\n"); + ncp_dbg(1, "called\n"); if (!ncp_conn_valid(NCP_SERVER(inode))) return -EIO; @@ -116,7 +117,7 @@ int ncp_mmap(struct file *file, struct vm_area_struct *vma) return -EINVAL; /* we do not support files bigger than 4GB... We eventually supports just 4GB... */ - if (((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff + if (vma_pages(vma) + vma->vm_pgoff > (1U << (32 - PAGE_SHIFT))) return -EFBIG; diff --git a/fs/ncpfs/ncp_fs.h b/fs/ncpfs/ncp_fs.h new file mode 100644 index 00000000000..b9f69e1b1f4 --- /dev/null +++ b/fs/ncpfs/ncp_fs.h @@ -0,0 +1,100 @@ +#include <linux/ncp_fs.h> +#include "ncp_fs_i.h" +#include "ncp_fs_sb.h" + +#undef NCPFS_PARANOIA +#ifdef NCPFS_PARANOIA +#define ncp_vdbg(fmt, ...) \ + pr_debug(fmt, ##__VA_ARGS__) +#else +#define ncp_vdbg(fmt, ...) \ +do { \ + if (0) \ + pr_debug(fmt, ##__VA_ARGS__); \ +} while (0) +#endif + +#ifndef DEBUG_NCP +#define DEBUG_NCP 0 +#endif + +#if DEBUG_NCP > 0 && !defined(DEBUG) +#define DEBUG +#endif + +#define ncp_dbg(level, fmt, ...) \ +do { \ + if (level <= DEBUG_NCP) \ + pr_debug(fmt, ##__VA_ARGS__); \ +} while (0) + +#define NCP_MAX_RPC_TIMEOUT (6*HZ) + + +struct ncp_entry_info { + struct nw_info_struct i; + ino_t ino; + int opened; + int access; + unsigned int volume; + __u8 file_handle[6]; +}; + +static inline struct ncp_server *NCP_SBP(const struct super_block *sb) +{ + return sb->s_fs_info; +} + +#define NCP_SERVER(inode) NCP_SBP((inode)->i_sb) +static inline struct ncp_inode_info *NCP_FINFO(const struct inode *inode) +{ + return container_of(inode, struct ncp_inode_info, vfs_inode); +} + +/* linux/fs/ncpfs/inode.c */ +int ncp_notify_change(struct dentry *, struct iattr *); +struct inode *ncp_iget(struct super_block *, struct ncp_entry_info *); +void ncp_update_inode(struct inode *, struct ncp_entry_info *); +void ncp_update_inode2(struct inode *, struct ncp_entry_info *); + +/* linux/fs/ncpfs/dir.c */ +extern const struct inode_operations ncp_dir_inode_operations; +extern const struct file_operations ncp_dir_operations; +extern const struct dentry_operations ncp_dentry_operations; +int ncp_conn_logged_in(struct super_block *); +int ncp_date_dos2unix(__le16 time, __le16 date); +void ncp_date_unix2dos(int unix_date, __le16 * time, __le16 * date); + +/* linux/fs/ncpfs/ioctl.c */ +long ncp_ioctl(struct file *, unsigned int, unsigned long); +long ncp_compat_ioctl(struct file *, unsigned int, unsigned long); + +/* linux/fs/ncpfs/sock.c */ +int ncp_request2(struct ncp_server *server, int function, + void* reply, int max_reply_size); +static inline int ncp_request(struct ncp_server *server, int function) { + return ncp_request2(server, function, server->packet, server->packet_size); +} +int ncp_connect(struct ncp_server *server); +int ncp_disconnect(struct ncp_server *server); +void ncp_lock_server(struct ncp_server *server); +void ncp_unlock_server(struct ncp_server *server); + +/* linux/fs/ncpfs/symlink.c */ +#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS) +extern const struct address_space_operations ncp_symlink_aops; +int ncp_symlink(struct inode*, struct dentry*, const char*); +#endif + +/* linux/fs/ncpfs/file.c */ +extern const struct inode_operations ncp_file_inode_operations; +extern const struct file_operations ncp_file_operations; +int ncp_make_open(struct inode *, int); + +/* linux/fs/ncpfs/mmap.c */ +int ncp_mmap(struct file *, struct vm_area_struct *); + +/* linux/fs/ncpfs/ncplib_kernel.c */ +int ncp_make_closed(struct inode *); + +#include "ncplib_kernel.h" diff --git a/fs/ncpfs/ncp_fs_i.h b/fs/ncpfs/ncp_fs_i.h new file mode 100644 index 00000000000..4b0bec47784 --- /dev/null +++ b/fs/ncpfs/ncp_fs_i.h @@ -0,0 +1,29 @@ +/* + * ncp_fs_i.h + * + * Copyright (C) 1995 Volker Lendecke + * + */ + +#ifndef _LINUX_NCP_FS_I +#define _LINUX_NCP_FS_I + +/* + * This is the ncpfs part of the inode structure. This must contain + * all the information we need to work with an inode after creation. + */ +struct ncp_inode_info { + __le32 dirEntNum; + __le32 DosDirNum; + __u8 volNumber; + __le32 nwattr; + struct mutex open_mutex; + atomic_t opened; + int access; + int flags; +#define NCPI_KLUDGE_SYMLINK 0x0001 + __u8 file_handle[6]; + struct inode vfs_inode; +}; + +#endif /* _LINUX_NCP_FS_I */ diff --git a/fs/ncpfs/ncp_fs_sb.h b/fs/ncpfs/ncp_fs_sb.h new file mode 100644 index 00000000000..55e26fd8088 --- /dev/null +++ b/fs/ncpfs/ncp_fs_sb.h @@ -0,0 +1,174 @@ +/* + * ncp_fs_sb.h + * + * Copyright (C) 1995, 1996 by Volker Lendecke + * + */ + +#ifndef _NCP_FS_SB +#define _NCP_FS_SB + +#include <linux/types.h> +#include <linux/ncp_mount.h> +#include <linux/net.h> +#include <linux/mutex.h> +#include <linux/backing-dev.h> +#include <linux/workqueue.h> + +#define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */ + +struct sock; + +struct ncp_mount_data_kernel { + unsigned long flags; /* NCP_MOUNT_* flags */ + unsigned int int_flags; /* internal flags */ +#define NCP_IMOUNT_LOGGEDIN_POSSIBLE 0x0001 + kuid_t mounted_uid; /* Who may umount() this filesystem? */ + struct pid *wdog_pid; /* Who cares for our watchdog packets? */ + unsigned int ncp_fd; /* The socket to the ncp port */ + unsigned int time_out; /* How long should I wait after + sending a NCP request? */ + unsigned int retry_count; /* And how often should I retry? */ + unsigned char mounted_vol[NCP_VOLNAME_LEN + 1]; + kuid_t uid; + kgid_t gid; + umode_t file_mode; + umode_t dir_mode; + int info_fd; +}; + +struct ncp_server { + struct rcu_head rcu; + struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of + interest for us later, so we store + it completely. */ + + __u8 name_space[NCP_NUMBER_OF_VOLUMES + 2]; + + struct socket *ncp_sock;/* ncp socket */ + struct socket *info_sock; + + u8 sequence; + u8 task; + u16 connection; /* Remote connection number */ + + u8 completion; /* Status message from server */ + u8 conn_status; /* Bit 4 = 1 ==> Server going down, no + requests allowed anymore. + Bit 0 = 1 ==> Server is down. */ + + int buffer_size; /* Negotiated bufsize */ + + int reply_size; /* Size of last reply */ + + int packet_size; + unsigned char *packet; /* Here we prepare requests and + receive replies */ + unsigned char *txbuf; /* Storage for current request */ + unsigned char *rxbuf; /* Storage for reply to current request */ + + int lock; /* To prevent mismatch in protocols. */ + struct mutex mutex; + + int current_size; /* for packet preparation */ + int has_subfunction; + int ncp_reply_size; + + int root_setuped; + struct mutex root_setup_lock; + + /* info for packet signing */ + int sign_wanted; /* 1=Server needs signed packets */ + int sign_active; /* 0=don't do signing, 1=do */ + char sign_root[8]; /* generated from password and encr. key */ + char sign_last[16]; + + /* Authentication info: NDS or BINDERY, username */ + struct { + int auth_type; + size_t object_name_len; + void* object_name; + int object_type; + } auth; + /* Password info */ + struct { + size_t len; + void* data; + } priv; + struct rw_semaphore auth_rwsem; + + /* nls info: codepage for volume and charset for I/O */ + struct nls_table *nls_vol; + struct nls_table *nls_io; + + /* maximum age in jiffies */ + atomic_t dentry_ttl; + + /* 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); + void (*error_report)(struct sock* sk); + void (*write_space)(struct sock* sk); /* STREAM mode only */ + struct { + struct work_struct tq; /* STREAM/DGRAM: data/error ready */ + struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */ + struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */ + + unsigned int state; /* STREAM only: receiver state */ + struct { + __u32 magic __packed; + __u32 len __packed; + __u16 type __packed; + __u16 p1 __packed; + __u16 p2 __packed; + __u16 p3 __packed; + __u16 type2 __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 work_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 work_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; + struct backing_dev_info bdi; +}; + +extern void ncp_tcp_rcv_proc(struct work_struct *work); +extern void ncp_tcp_tx_proc(struct work_struct *work); +extern void ncpdgram_rcv_proc(struct work_struct *work); +extern void ncpdgram_timeout_proc(struct work_struct *work); +extern void ncpdgram_timeout_call(unsigned long server); +extern void ncp_tcp_data_ready(struct sock* sk); +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)) +#define NCP_SET_FLAG(server, flag) ((server)->flags |= (flag)) +#define NCP_IS_FLAG(server, flag) ((server)->flags & (flag)) + +static inline int ncp_conn_valid(struct ncp_server *server) +{ + return ((server->conn_status & 0x11) == 0); +} + +static inline void ncp_invalidate_conn(struct ncp_server *server) +{ + server->conn_status |= 0x01; +} + +#endif diff --git a/fs/ncpfs/ncplib_kernel.c b/fs/ncpfs/ncplib_kernel.c index 0ec6237a597..482387532f5 100644 --- a/fs/ncpfs/ncplib_kernel.c +++ b/fs/ncpfs/ncplib_kernel.c @@ -9,14 +9,14 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include "ncplib_kernel.h" +#include "ncp_fs.h" static inline void assert_server_locked(struct ncp_server *server) { if (server->lock == 0) { - DPRINTK("ncpfs: server not locked!\n"); + ncp_dbg(1, "server not locked!\n"); } } @@ -75,7 +75,7 @@ static void ncp_add_pstring(struct ncp_server *server, const char *s) int len = strlen(s); assert_server_locked(server); if (len > 255) { - DPRINTK("ncpfs: string too long: %s\n", s); + ncp_dbg(1, "string too long: %s\n", s); len = 255; } ncp_add_byte(server, len); @@ -107,17 +107,17 @@ ncp_reply_data(struct ncp_server *server, int offset) return &(server->packet[sizeof(struct ncp_reply_header) + offset]); } -static inline u8 BVAL(void *data) +static inline u8 BVAL(const void *data) { - return *(u8 *)data; + return *(const u8 *)data; } static u8 ncp_reply_byte(struct ncp_server *server, int offset) { - return *(u8 *)ncp_reply_data(server, offset); + return *(const u8 *)ncp_reply_data(server, offset); } -static inline u16 WVAL_LH(void *data) +static inline u16 WVAL_LH(const void *data) { return get_unaligned_le16(data); } @@ -134,7 +134,7 @@ ncp_reply_be16(struct ncp_server *server, int offset) return get_unaligned_be16(ncp_reply_data(server, offset)); } -static inline u32 DVAL_LH(void *data) +static inline u32 DVAL_LH(const void *data) { return get_unaligned_le32(data); } @@ -225,7 +225,7 @@ int ncp_get_volume_info_with_number(struct ncp_server* server, result = -EIO; len = ncp_reply_byte(server, 29); if (len > NCP_VOLNAME_LEN) { - DPRINTK("ncpfs: volume name too long: %d\n", len); + ncp_dbg(1, "volume name too long: %d\n", len); goto out; } memcpy(&(target->volume_name), ncp_reply_data(server, 30), len); @@ -259,7 +259,7 @@ int ncp_get_directory_info(struct ncp_server* server, __u8 n, result = -EIO; len = ncp_reply_byte(server, 21); if (len > NCP_VOLNAME_LEN) { - DPRINTK("ncpfs: volume name too long: %d\n", len); + ncp_dbg(1, "volume name too long: %d\n", len); goto out; } memcpy(&(target->volume_name), ncp_reply_data(server, 22), len); @@ -295,9 +295,9 @@ ncp_make_closed(struct inode *inode) err = ncp_close_file(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle); if (!err) - PPRINTK("ncp_make_closed: volnum=%d, dirent=%u, error=%d\n", - NCP_FINFO(inode)->volNumber, - NCP_FINFO(inode)->dirEntNum, err); + ncp_vdbg("volnum=%d, dirent=%u, error=%d\n", + NCP_FINFO(inode)->volNumber, + NCP_FINFO(inode)->dirEntNum, err); } mutex_unlock(&NCP_FINFO(inode)->open_mutex); return err; @@ -349,9 +349,9 @@ int ncp_dirhandle_free(struct ncp_server* server, __u8 dirhandle) { return result; } -void ncp_extract_file_info(void *structure, struct nw_info_struct *target) +void ncp_extract_file_info(const void *structure, struct nw_info_struct *target) { - __u8 *name_len; + const __u8 *name_len; const int info_struct_size = offsetof(struct nw_info_struct, nameLen); memcpy(target, structure, info_struct_size); @@ -364,7 +364,7 @@ void ncp_extract_file_info(void *structure, struct nw_info_struct *target) } #ifdef CONFIG_NCPFS_NFS_NS -static inline void ncp_extract_nfs_info(unsigned char *structure, +static inline void ncp_extract_nfs_info(const unsigned char *structure, struct nw_nfs_info *target) { target->mode = DVAL_LH(structure); @@ -394,8 +394,7 @@ int ncp_obtain_nfs_info(struct ncp_server *server, if ((result = ncp_request(server, 87)) == 0) { ncp_extract_nfs_info(ncp_reply_data(server, 0), &target->nfs); - DPRINTK(KERN_DEBUG - "ncp_obtain_nfs_info: (%s) mode=0%o, rdev=0x%x\n", + ncp_dbg(1, "(%s) mode=0%o, rdev=0x%x\n", target->entryName, target->nfs.mode, target->nfs.rdev); } else { @@ -417,7 +416,7 @@ int ncp_obtain_nfs_info(struct ncp_server *server, * Returns information for a (one-component) name relative to * the specified directory. */ -int ncp_obtain_info(struct ncp_server *server, struct inode *dir, char *path, +int ncp_obtain_info(struct ncp_server *server, struct inode *dir, const char *path, struct nw_info_struct *target) { __u8 volnum = NCP_FINFO(dir)->volNumber; @@ -425,7 +424,7 @@ int ncp_obtain_info(struct ncp_server *server, struct inode *dir, char *path, int result; if (target == NULL) { - printk(KERN_ERR "ncp_obtain_info: invalid call\n"); + pr_err("%s: invalid call\n", __func__); return -EINVAL; } ncp_init_request(server); @@ -452,16 +451,16 @@ out: #ifdef CONFIG_NCPFS_NFS_NS static int ncp_obtain_DOS_dir_base(struct ncp_server *server, - __u8 volnum, __le32 dirent, - char *path, /* At most 1 component */ + __u8 ns, __u8 volnum, __le32 dirent, + const char *path, /* At most 1 component */ __le32 *DOS_dir_base) { int result; ncp_init_request(server); ncp_add_byte(server, 6); /* subfunction */ - ncp_add_byte(server, server->name_space[volnum]); - ncp_add_byte(server, server->name_space[volnum]); + ncp_add_byte(server, ns); + ncp_add_byte(server, ns); ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ ncp_add_dword(server, RIM_DIRECTORY); ncp_add_handle_path(server, volnum, dirent, 1, path); @@ -498,7 +497,7 @@ ncp_get_known_namespace(struct ncp_server *server, __u8 volume) namespace = ncp_reply_data(server, 2); while (no_namespaces > 0) { - DPRINTK("get_namespaces: found %d on %d\n", *namespace, volume); + ncp_dbg(1, "found %d on %d\n", *namespace, volume); #ifdef CONFIG_NCPFS_NFS_NS if ((*namespace == NW_NS_NFS) && !(server->m.flags&NCP_MOUNT_NO_NFS)) @@ -523,10 +522,26 @@ ncp_get_known_namespace(struct ncp_server *server, __u8 volume) #endif /* defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) */ } +int +ncp_update_known_namespace(struct ncp_server *server, __u8 volume, int *ret_ns) +{ + int ns = ncp_get_known_namespace(server, volume); + + if (ret_ns) + *ret_ns = ns; + + ncp_dbg(1, "namespace[%d] = %d\n", volume, server->name_space[volume]); + + if (server->name_space[volume] == ns) + return 0; + server->name_space[volume] = ns; + return 1; +} + static int ncp_ObtainSpecificDirBase(struct ncp_server *server, __u8 nsSrc, __u8 nsDst, __u8 vol_num, __le32 dir_base, - char *path, /* At most 1 component */ + const char *path, /* At most 1 component */ __le32 *dirEntNum, __le32 *DosDirNum) { int result; @@ -560,14 +575,13 @@ ncp_mount_subdir(struct ncp_server *server, { int dstNS; int result; - - dstNS = ncp_get_known_namespace(server, volNumber); + + ncp_update_known_namespace(server, volNumber, &dstNS); if ((result = ncp_ObtainSpecificDirBase(server, srcNS, dstNS, volNumber, dirEntNum, NULL, newDirEnt, newDosEnt)) != 0) { return result; } - server->name_space[volNumber] = dstNS; *volume = volNumber; server->m.mounted_vol[1] = 0; server->m.mounted_vol[0] = 'X'; @@ -575,13 +589,12 @@ ncp_mount_subdir(struct ncp_server *server, } int -ncp_get_volume_root(struct ncp_server *server, const char *volname, - __u32* volume, __le32* dirent, __le32* dosdirent) +ncp_get_volume_root(struct ncp_server *server, + const char *volname, __u32* volume, __le32* dirent, __le32* dosdirent) { int result; - __u8 volnum; - DPRINTK("ncp_get_volume_root: looking up vol %s\n", volname); + ncp_dbg(1, "looking up vol %s\n", volname); ncp_init_request(server); ncp_add_byte(server, 22); /* Subfunction: Generate dir handle */ @@ -601,21 +614,14 @@ ncp_get_volume_root(struct ncp_server *server, const char *volname, return result; } *dirent = *dosdirent = ncp_reply_dword(server, 4); - volnum = ncp_reply_byte(server, 8); + *volume = ncp_reply_byte(server, 8); ncp_unlock_server(server); - *volume = volnum; - - server->name_space[volnum] = ncp_get_known_namespace(server, volnum); - - DPRINTK("lookup_vol: namespace[%d] = %d\n", - volnum, server->name_space[volnum]); - return 0; } int -ncp_lookup_volume(struct ncp_server *server, const char *volname, - struct nw_info_struct *target) +ncp_lookup_volume(struct ncp_server *server, + const char *volname, struct nw_info_struct *target) { int result; @@ -625,6 +631,7 @@ ncp_lookup_volume(struct ncp_server *server, const char *volname, if (result) { return result; } + ncp_update_known_namespace(server, target->volNumber, NULL); target->nameLen = strlen(volname); memcpy(target->entryName, volname, target->nameLen+1); target->attributes = aDIR; @@ -676,8 +683,8 @@ int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent, { int result = 0; + ncp_init_request(server); if (server->name_space[volnum] == NW_NS_NFS) { - ncp_init_request(server); ncp_add_byte(server, 25); /* subfunction */ ncp_add_byte(server, server->name_space[volnum]); ncp_add_byte(server, NW_NS_NFS); @@ -690,8 +697,8 @@ int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent, ncp_add_dword_lh(server, 1); /* nlinks */ ncp_add_dword_lh(server, rdev); result = ncp_request(server, 87); - ncp_unlock_server(server); } + ncp_unlock_server(server); return result; } #endif @@ -700,7 +707,7 @@ int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent, static int ncp_DeleteNSEntry(struct ncp_server *server, __u8 have_dir_base, __u8 volnum, __le32 dirent, - char* name, __u8 ns, __le16 attr) + const char* name, __u8 ns, __le16 attr) { int result; @@ -734,23 +741,25 @@ ncp_del_file_or_subdir2(struct ncp_server *server, int ncp_del_file_or_subdir(struct ncp_server *server, - struct inode *dir, char *name) + struct inode *dir, const char *name) { __u8 volnum = NCP_FINFO(dir)->volNumber; __le32 dirent = NCP_FINFO(dir)->dirEntNum; + int name_space; + name_space = server->name_space[volnum]; #ifdef CONFIG_NCPFS_NFS_NS - if (server->name_space[volnum]==NW_NS_NFS) + if (name_space == NW_NS_NFS) { int result; - result=ncp_obtain_DOS_dir_base(server, volnum, dirent, name, &dirent); + result=ncp_obtain_DOS_dir_base(server, name_space, volnum, dirent, name, &dirent); if (result) return result; - return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); + name = NULL; + name_space = NW_NS_DOS; } - else #endif /* CONFIG_NCPFS_NFS_NS */ - return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, server->name_space[volnum], cpu_to_le16(0x8006)); + return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, name_space, cpu_to_le16(0x8006)); } static inline void ConvertToNWfromDWORD(__u16 v0, __u16 v1, __u8 ret[6]) @@ -765,7 +774,7 @@ static inline void ConvertToNWfromDWORD(__u16 v0, __u16 v1, __u8 ret[6]) /* If both dir and name are NULL, then in target there's already a looked-up entry that wants to be opened. */ int ncp_open_create_file_or_subdir(struct ncp_server *server, - struct inode *dir, char *name, + struct inode *dir, const char *name, int open_create_mode, __le32 create_attributes, __le16 desired_acc_rights, @@ -890,8 +899,8 @@ int ncp_search_for_fileset(struct ncp_server *server, static int ncp_RenameNSEntry(struct ncp_server *server, - struct inode *old_dir, char *old_name, __le16 old_type, - struct inode *new_dir, char *new_name) + struct inode *old_dir, const char *old_name, __le16 old_type, + struct inode *new_dir, const char *new_name) { int result = -EINVAL; @@ -929,8 +938,8 @@ out: } int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, - struct inode *old_dir, char *old_name, - struct inode *new_dir, char *new_name) + struct inode *old_dir, const char *old_name, + struct inode *new_dir, const char *new_name) { int result; __le16 old_type = cpu_to_le16(0x06); @@ -958,7 +967,7 @@ int ncp_read_kernel(struct ncp_server *server, const char *file_id, __u32 offset, __u16 to_read, char *target, int *bytes_read) { - char *source; + const char *source; int result; ncp_init_request(server); diff --git a/fs/ncpfs/ncplib_kernel.h b/fs/ncpfs/ncplib_kernel.h index 2441d1ab57d..32c06587351 100644 --- a/fs/ncpfs/ncplib_kernel.h +++ b/fs/ncpfs/ncplib_kernel.h @@ -32,8 +32,6 @@ #include <linux/ctype.h> #endif /* CONFIG_NCPFS_NLS */ -#include <linux/ncp_fs.h> - #define NCP_MIN_SYMLINK_SIZE 8 #define NCP_MAX_SYMLINK_SIZE 512 @@ -65,10 +63,11 @@ static inline void ncp_inode_close(struct inode *inode) { atomic_dec(&NCP_FINFO(inode)->opened); } -void ncp_extract_file_info(void* src, struct nw_info_struct* target); -int ncp_obtain_info(struct ncp_server *server, struct inode *, char *, +void ncp_extract_file_info(const void* src, struct nw_info_struct* target); +int ncp_obtain_info(struct ncp_server *server, struct inode *, const char *, struct nw_info_struct *target); int ncp_obtain_nfs_info(struct ncp_server *server, struct nw_info_struct *target); +int ncp_update_known_namespace(struct ncp_server *server, __u8 volume, int *ret_ns); int ncp_get_volume_root(struct ncp_server *server, const char *volname, __u32 *volume, __le32 *dirent, __le32 *dosdirent); int ncp_lookup_volume(struct ncp_server *, const char *, struct nw_info_struct *); @@ -80,8 +79,8 @@ int ncp_modify_nfs_info(struct ncp_server *, __u8 volnum, __le32 dirent, __u32 mode, __u32 rdev); int ncp_del_file_or_subdir2(struct ncp_server *, struct dentry*); -int ncp_del_file_or_subdir(struct ncp_server *, struct inode *, char *); -int ncp_open_create_file_or_subdir(struct ncp_server *, struct inode *, char *, +int ncp_del_file_or_subdir(struct ncp_server *, struct inode *, const char *); +int ncp_open_create_file_or_subdir(struct ncp_server *, struct inode *, const char *, int, __le32, __le16, struct ncp_entry_info *); int ncp_initialize_search(struct ncp_server *, struct inode *, @@ -93,7 +92,7 @@ int ncp_search_for_fileset(struct ncp_server *server, char** rbuf, size_t* rsize); int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, - struct inode *, char *, struct inode *, char *); + struct inode *, const char *, struct inode *, const char *); int @@ -115,7 +114,7 @@ int ncp_dirhandle_alloc(struct ncp_server *, __u8 vol, __le32 dirent, __u8 *dirh int ncp_dirhandle_free(struct ncp_server *, __u8 dirhandle); int ncp_create_new(struct inode *dir, struct dentry *dentry, - int mode, dev_t rdev, __le32 attributes); + umode_t mode, dev_t rdev, __le32 attributes); static inline int ncp_is_nfs_extras(struct ncp_server* server, unsigned int volnum) { #ifdef CONFIG_NCPFS_NFS_NS @@ -134,7 +133,7 @@ int ncp__vol2io(struct ncp_server *, unsigned char *, unsigned int *, const unsigned char *, unsigned int, int); #define NCP_ESC ':' -#define NCP_IO_TABLE(dentry) (NCP_SERVER((dentry)->d_inode)->nls_io) +#define NCP_IO_TABLE(sb) (NCP_SBP(sb)->nls_io) #define ncp_tolower(t, c) nls_tolower(t, c) #define ncp_toupper(t, c) nls_toupper(t, c) #define ncp_strnicmp(t, s1, s2, len) \ @@ -149,15 +148,15 @@ int ncp__io2vol(unsigned char *, unsigned int *, int ncp__vol2io(unsigned char *, unsigned int *, const unsigned char *, unsigned int, int); -#define NCP_IO_TABLE(dentry) NULL +#define NCP_IO_TABLE(sb) NULL #define ncp_tolower(t, c) tolower(c) #define ncp_toupper(t, c) toupper(c) #define ncp_io2vol(S,m,i,n,k,U) ncp__io2vol(m,i,n,k,U) #define ncp_vol2io(S,m,i,n,k,U) ncp__vol2io(m,i,n,k,U) -static inline int ncp_strnicmp(struct nls_table *t, const unsigned char *s1, - const unsigned char *s2, int len) +static inline int ncp_strnicmp(const struct nls_table *t, + const unsigned char *s1, const unsigned char *s2, int len) { while (len--) { if (tolower(*s1++) != tolower(*s2++)) @@ -170,13 +169,13 @@ static inline int ncp_strnicmp(struct nls_table *t, const unsigned char *s1, #endif /* CONFIG_NCPFS_NLS */ #define NCP_GET_AGE(dentry) (jiffies - (dentry)->d_time) -#define NCP_MAX_AGE(server) ((server)->dentry_ttl) +#define NCP_MAX_AGE(server) atomic_read(&(server)->dentry_ttl) #define NCP_TEST_AGE(server,dentry) (NCP_GET_AGE(dentry) < NCP_MAX_AGE(server)) static inline void ncp_age_dentry(struct ncp_server* server, struct dentry* dentry) { - dentry->d_time = jiffies - server->dentry_ttl; + dentry->d_time = jiffies - NCP_MAX_AGE(server); } static inline void @@ -192,7 +191,7 @@ ncp_renew_dentries(struct dentry *parent) struct list_head *next; struct dentry *dentry; - spin_lock(&dcache_lock); + spin_lock(&parent->d_lock); next = parent->d_subdirs.next; while (next != &parent->d_subdirs) { dentry = list_entry(next, struct dentry, d_u.d_child); @@ -204,7 +203,7 @@ ncp_renew_dentries(struct dentry *parent) next = next->next; } - spin_unlock(&dcache_lock); + spin_unlock(&parent->d_lock); } static inline void @@ -214,7 +213,7 @@ ncp_invalidate_dircache_entries(struct dentry *parent) struct list_head *next; struct dentry *dentry; - spin_lock(&dcache_lock); + spin_lock(&parent->d_lock); next = parent->d_subdirs.next; while (next != &parent->d_subdirs) { dentry = list_entry(next, struct dentry, d_u.d_child); @@ -222,7 +221,7 @@ ncp_invalidate_dircache_entries(struct dentry *parent) ncp_age_dentry(server, dentry); next = next->next; } - spin_unlock(&dcache_lock); + spin_unlock(&parent->d_lock); } struct ncp_cache_head { diff --git a/fs/ncpfs/ncpsign_kernel.c b/fs/ncpfs/ncpsign_kernel.c index 7c0b5c21e6c..08907599dcd 100644 --- a/fs/ncpfs/ncpsign_kernel.c +++ b/fs/ncpfs/ncpsign_kernel.c @@ -11,25 +11,26 @@ #include <linux/string.h> #include <linux/ncp.h> #include <linux/bitops.h> +#include "ncp_fs.h" #include "ncpsign_kernel.h" /* i386: 32-bit, little endian, handles mis-alignment */ #ifdef __i386__ -#define GET_LE32(p) (*(int *)(p)) +#define GET_LE32(p) (*(const int *)(p)) #define PUT_LE32(p,v) { *(int *)(p)=v; } #else /* from include/ncplib.h */ -#define BVAL(buf,pos) (((__u8 *)(buf))[pos]) +#define BVAL(buf,pos) (((const __u8 *)(buf))[pos]) #define PVAL(buf,pos) ((unsigned)BVAL(buf,pos)) -#define BSET(buf,pos,val) (BVAL(buf,pos) = (val)) +#define BSET(buf,pos,val) (((__u8 *)(buf))[pos] = (val)) static inline __u16 -WVAL_LH(__u8 * buf, int pos) +WVAL_LH(const __u8 * buf, int pos) { return PVAL(buf, pos) | PVAL(buf, pos + 1) << 8; } static inline __u32 -DVAL_LH(__u8 * buf, int pos) +DVAL_LH(const __u8 * buf, int pos) { return WVAL_LH(buf, pos) | WVAL_LH(buf, pos + 2) << 16; } diff --git a/fs/ncpfs/ncpsign_kernel.h b/fs/ncpfs/ncpsign_kernel.h index 6451a68381c..d9a1438bb1f 100644 --- a/fs/ncpfs/ncpsign_kernel.h +++ b/fs/ncpfs/ncpsign_kernel.h @@ -8,8 +8,6 @@ #ifndef _NCPSIGN_KERNEL_H #define _NCPSIGN_KERNEL_H -#include <linux/ncp_fs.h> - #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); diff --git a/fs/ncpfs/sock.c b/fs/ncpfs/sock.c index e37df8d5fe7..471bc3d1139 100644 --- a/fs/ncpfs/sock.c +++ b/fs/ncpfs/sock.c @@ -8,6 +8,7 @@ * */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/time.h> #include <linux/errno.h> @@ -21,13 +22,14 @@ #include <linux/mm.h> #include <linux/netdevice.h> #include <linux/signal.h> +#include <linux/slab.h> #include <net/scm.h> #include <net/sock.h> #include <linux/ipx.h> #include <linux/poll.h> #include <linux/file.h> -#include <linux/ncp_fs.h> +#include "ncp_fs.h" #include "ncpsign_kernel.h" @@ -95,11 +97,11 @@ static void ncp_req_put(struct ncp_request_reply *req) kfree(req); } -void ncp_tcp_data_ready(struct sock *sk, int len) +void ncp_tcp_data_ready(struct sock *sk) { struct ncp_server *server = sk->sk_user_data; - server->data_ready(sk, len); + server->data_ready(sk); schedule_work(&server->rcv.tq); } @@ -230,7 +232,7 @@ static void __ncptcp_try_send(struct ncp_server *server) return; if (result < 0) { - printk(KERN_ERR "ncpfs: tcp: Send failed: %d\n", result); + pr_err("tcp: Send failed: %d\n", result); __ncp_abort_request(server, rq, result); return; } @@ -331,7 +333,7 @@ static int ncp_add_request(struct ncp_server *server, struct ncp_request_reply * mutex_lock(&server->rcv.creq_mutex); if (!ncp_conn_valid(server)) { mutex_unlock(&server->rcv.creq_mutex); - printk(KERN_ERR "ncpfs: tcp: Server died\n"); + pr_err("tcp: Server died\n"); return -EIO; } ncp_req_get(req); @@ -404,15 +406,15 @@ void ncpdgram_rcv_proc(struct work_struct *work) } result = _recv(sock, buf, sizeof(buf), MSG_DONTWAIT); if (result < 0) { - DPRINTK("recv failed with %d\n", result); + ncp_dbg(1, "recv failed with %d\n", result); continue; } if (result < 10) { - DPRINTK("too short (%u) watchdog packet\n", result); + ncp_dbg(1, "too short (%u) watchdog packet\n", result); continue; } if (buf[9] != '?') { - DPRINTK("bad signature (%02X) in watchdog packet\n", buf[9]); + ncp_dbg(1, "bad signature (%02X) in watchdog packet\n", buf[9]); continue; } buf[9] = 'Y'; @@ -447,7 +449,7 @@ void ncpdgram_rcv_proc(struct work_struct *work) result -= 8; hdrl = sock->sk->sk_family == AF_INET ? 8 : 6; if (sign_verify_reply(server, server->rxbuf + hdrl, result - hdrl, cpu_to_le32(result), server->rxbuf + result)) { - printk(KERN_INFO "ncpfs: Signature violation\n"); + pr_info("Signature violation\n"); result = -EIO; } } @@ -523,7 +525,7 @@ static int do_tcp_rcv(struct ncp_server *server, void *buffer, size_t len) return result; } if (result > len) { - printk(KERN_ERR "ncpfs: tcp: bug in recvmsg (%u > %Zu)\n", result, len); + pr_err("tcp: bug in recvmsg (%u > %Zu)\n", result, len); return -EIO; } return result; @@ -551,9 +553,9 @@ static int __ncptcp_rcv_proc(struct ncp_server *server) __ncptcp_abort(server); } if (result < 0) { - printk(KERN_ERR "ncpfs: tcp: error in recvmsg: %d\n", result); + pr_err("tcp: error in recvmsg: %d\n", result); } else { - DPRINTK(KERN_ERR "ncpfs: tcp: EOF\n"); + ncp_dbg(1, "tcp: EOF\n"); } return -EIO; } @@ -565,20 +567,20 @@ static int __ncptcp_rcv_proc(struct ncp_server *server) switch (server->rcv.state) { case 0: if (server->rcv.buf.magic != htonl(NCP_TCP_RCVD_MAGIC)) { - printk(KERN_ERR "ncpfs: tcp: Unexpected reply type %08X\n", ntohl(server->rcv.buf.magic)); + pr_err("tcp: Unexpected reply type %08X\n", ntohl(server->rcv.buf.magic)); __ncptcp_abort(server); return -EIO; } datalen = ntohl(server->rcv.buf.len) & 0x0FFFFFFF; if (datalen < 10) { - printk(KERN_ERR "ncpfs: tcp: Unexpected reply len %d\n", datalen); + pr_err("tcp: Unexpected reply len %d\n", datalen); __ncptcp_abort(server); return -EIO; } #ifdef CONFIG_NCPFS_PACKET_SIGNING if (server->sign_active) { if (datalen < 18) { - printk(KERN_ERR "ncpfs: tcp: Unexpected reply len %d\n", datalen); + pr_err("tcp: Unexpected reply len %d\n", datalen); __ncptcp_abort(server); return -EIO; } @@ -603,7 +605,7 @@ cont:; server->rcv.len = datalen - 10; break; } - DPRINTK("ncpfs: tcp: Unexpected NCP type %02X\n", type); + ncp_dbg(1, "tcp: Unexpected NCP type %02X\n", type); skipdata2:; server->rcv.state = 2; skipdata:; @@ -613,11 +615,11 @@ skipdata:; } req = server->rcv.creq; if (!req) { - DPRINTK(KERN_ERR "ncpfs: Reply without appropriate request\n"); + ncp_dbg(1, "Reply without appropriate request\n"); goto skipdata2; } if (datalen > req->datalen + 8) { - printk(KERN_ERR "ncpfs: tcp: Unexpected reply len %d (expected at most %Zd)\n", datalen, req->datalen + 8); + pr_err("tcp: Unexpected reply len %d (expected at most %Zd)\n", datalen, req->datalen + 8); server->rcv.state = 3; goto skipdata; } @@ -637,12 +639,12 @@ skipdata:; req = server->rcv.creq; if (req->tx_type != NCP_ALLOC_SLOT_REQUEST) { if (((struct ncp_reply_header*)server->rxbuf)->sequence != server->sequence) { - printk(KERN_ERR "ncpfs: tcp: Bad sequence number\n"); + pr_err("tcp: Bad sequence number\n"); __ncp_abort_request(server, req, -EIO); return -EIO; } if ((((struct ncp_reply_header*)server->rxbuf)->conn_low | (((struct ncp_reply_header*)server->rxbuf)->conn_high << 8)) != server->connection) { - printk(KERN_ERR "ncpfs: tcp: Connection number mismatch\n"); + pr_err("tcp: Connection number mismatch\n"); __ncp_abort_request(server, req, -EIO); return -EIO; } @@ -650,7 +652,7 @@ skipdata:; #ifdef CONFIG_NCPFS_PACKET_SIGNING if (server->sign_active && req->tx_type != NCP_DEALLOC_SLOT_REQUEST) { if (sign_verify_reply(server, server->rxbuf + 6, req->datalen - 6, cpu_to_be32(req->datalen + 16), &server->rcv.buf.type)) { - printk(KERN_ERR "ncpfs: tcp: Signature violation\n"); + pr_err("tcp: Signature violation\n"); __ncp_abort_request(server, req, -EIO); return -EIO; } @@ -741,11 +743,10 @@ static int ncp_do_request(struct ncp_server *server, int size, int result; if (server->lock == 0) { - printk(KERN_ERR "ncpfs: Server not locked!\n"); + pr_err("Server not locked!\n"); return -EIO; } if (!ncp_conn_valid(server)) { - printk(KERN_ERR "ncpfs: Connection invalid!\n"); return -EIO; } { @@ -781,7 +782,7 @@ static int ncp_do_request(struct ncp_server *server, int size, spin_unlock_irqrestore(¤t->sighand->siglock, flags); } - DDPRINTK("do_ncp_rpc_call returned %d\n", result); + ncp_dbg(2, "do_ncp_rpc_call returned %d\n", result); return result; } @@ -811,7 +812,7 @@ int ncp_request2(struct ncp_server *server, int function, result = ncp_do_request(server, server->current_size, reply, size); if (result < 0) { - DPRINTK("ncp_request_error: %d\n", result); + ncp_dbg(1, "ncp_request_error: %d\n", result); goto out; } server->completion = reply->completion_code; @@ -822,7 +823,7 @@ int ncp_request2(struct ncp_server *server, int function, result = reply->completion_code; if (result != 0) - PPRINTK("ncp_request: completion code=%x\n", result); + ncp_vdbg("completion code=%x\n", result); out: return result; } @@ -865,14 +866,14 @@ void ncp_lock_server(struct ncp_server *server) { mutex_lock(&server->mutex); if (server->lock) - printk(KERN_WARNING "ncp_lock_server: was locked!\n"); + pr_warn("%s: was locked!\n", __func__); server->lock = 1; } void ncp_unlock_server(struct ncp_server *server) { if (!server->lock) { - printk(KERN_WARNING "ncp_unlock_server: was not locked!\n"); + pr_warn("%s: was not locked!\n", __func__); return; } server->lock = 0; diff --git a/fs/ncpfs/symlink.c b/fs/ncpfs/symlink.c index e3d26c1bd10..1a63bfdb4a6 100644 --- a/fs/ncpfs/symlink.c +++ b/fs/ncpfs/symlink.c @@ -25,12 +25,11 @@ #include <linux/errno.h> #include <linux/fs.h> -#include <linux/ncp_fs.h> #include <linux/time.h> +#include <linux/slab.h> #include <linux/mm.h> #include <linux/stat.h> -#include "ncplib_kernel.h" - +#include "ncp_fs.h" /* these magic numbers must appear in the symlink file -- this makes it a bit more resilient against the magic attributes being set on random files. */ @@ -109,11 +108,11 @@ int ncp_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { char *rawlink; int length, err, i, outlen; int kludge; - int mode; + umode_t mode; __le32 attr; unsigned int hdr; - DPRINTK("ncp_symlink(dir=%p,dentry=%p,symname=%s)\n",dir,dentry,symname); + ncp_dbg(1, "dir=%p, dentry=%p, symname=%s\n", dir, dentry, symname); if (ncp_is_nfs_extras(NCP_SERVER(dir), NCP_FINFO(dir)->volNumber)) kludge = 0; |