diff options
Diffstat (limited to 'fs/jffs2')
-rw-r--r-- | fs/jffs2/acl.c | 101 | ||||
-rw-r--r-- | fs/jffs2/acl.h | 12 | ||||
-rw-r--r-- | fs/jffs2/dir.c | 35 | ||||
-rw-r--r-- | fs/jffs2/file.c | 11 | ||||
-rw-r--r-- | fs/jffs2/fs.c | 21 | ||||
-rw-r--r-- | fs/jffs2/os-linux.h | 4 | ||||
-rw-r--r-- | fs/jffs2/write.c | 8 |
7 files changed, 98 insertions, 94 deletions
diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c index 8ec9323e830a..9728614b8958 100644 --- a/fs/jffs2/acl.c +++ b/fs/jffs2/acl.c @@ -228,11 +228,28 @@ struct posix_acl *jffs2_get_acl(struct inode *inode, int type) return acl; } +static int __jffs2_set_acl(struct inode *inode, int xprefix, struct posix_acl *acl) +{ + char *value = NULL; + size_t size = 0; + int rc; + + if (acl) { + value = jffs2_acl_to_medium(acl, &size); + if (IS_ERR(value)) + return PTR_ERR(value); + } + rc = do_jffs2_setxattr(inode, xprefix, "", value, size, 0); + if (!value && rc == -ENODATA) + rc = 0; + kfree(value); + + return rc; +} + static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl) { struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode); - size_t size = 0; - char *value = NULL; int rc, xprefix; if (S_ISLNK(inode->i_mode)) @@ -267,17 +284,7 @@ static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl) default: return -EINVAL; } - if (acl) { - value = jffs2_acl_to_medium(acl, &size); - if (IS_ERR(value)) - return PTR_ERR(value); - } - - rc = do_jffs2_setxattr(inode, xprefix, "", value, size, 0); - if (!value && rc == -ENODATA) - rc = 0; - if (value) - kfree(value); + rc = __jffs2_set_acl(inode, xprefix, acl); if (!rc) { switch(type) { case ACL_TYPE_ACCESS: @@ -312,37 +319,59 @@ int jffs2_permission(struct inode *inode, int mask, struct nameidata *nd) return generic_permission(inode, mask, jffs2_check_acl); } -int jffs2_init_acl(struct inode *inode, struct posix_acl *acl) +int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, int *i_mode) { struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode); - struct posix_acl *clone; - mode_t mode; - int rc = 0; + struct posix_acl *acl, *clone; + int rc; - f->i_acl_access = JFFS2_ACL_NOT_CACHED; - f->i_acl_default = JFFS2_ACL_NOT_CACHED; + f->i_acl_default = NULL; + f->i_acl_access = NULL; + + if (S_ISLNK(*i_mode)) + return 0; /* Symlink always has no-ACL */ + + acl = jffs2_get_acl(dir_i, ACL_TYPE_DEFAULT); + if (IS_ERR(acl)) + return PTR_ERR(acl); + + if (!acl) { + *i_mode &= ~current->fs->umask; + } else { + if (S_ISDIR(*i_mode)) + jffs2_iset_acl(inode, &f->i_acl_default, acl); - if (acl) { - if (S_ISDIR(inode->i_mode)) { - rc = jffs2_set_acl(inode, ACL_TYPE_DEFAULT, acl); - if (rc) - goto cleanup; - } clone = posix_acl_clone(acl, GFP_KERNEL); - rc = -ENOMEM; if (!clone) - goto cleanup; - mode = inode->i_mode; - rc = posix_acl_create_masq(clone, &mode); - if (rc >= 0) { - inode->i_mode = mode; - if (rc > 0) - rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, clone); - } + return -ENOMEM; + rc = posix_acl_create_masq(clone, (mode_t *)i_mode); + if (rc < 0) + return rc; + if (rc > 0) + jffs2_iset_acl(inode, &f->i_acl_access, clone); + posix_acl_release(clone); } - cleanup: - posix_acl_release(acl); + return 0; +} + +int jffs2_init_acl_post(struct inode *inode) +{ + struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode); + int rc; + + if (f->i_acl_default) { + rc = __jffs2_set_acl(inode, JFFS2_XPREFIX_ACL_DEFAULT, f->i_acl_default); + if (rc) + return rc; + } + + if (f->i_acl_access) { + rc = __jffs2_set_acl(inode, JFFS2_XPREFIX_ACL_ACCESS, f->i_acl_access); + if (rc) + return rc; + } + return rc; } diff --git a/fs/jffs2/acl.h b/fs/jffs2/acl.h index 90a2dbf59051..76c6ebd1acd9 100644 --- a/fs/jffs2/acl.h +++ b/fs/jffs2/acl.h @@ -31,7 +31,8 @@ struct jffs2_acl_header { extern struct posix_acl *jffs2_get_acl(struct inode *inode, int type); extern int jffs2_permission(struct inode *, int, struct nameidata *); extern int jffs2_acl_chmod(struct inode *); -extern int jffs2_init_acl(struct inode *, struct posix_acl *); +extern int jffs2_init_acl_pre(struct inode *, struct inode *, int *); +extern int jffs2_init_acl_post(struct inode *); extern void jffs2_clear_acl(struct jffs2_inode_info *); extern struct xattr_handler jffs2_acl_access_xattr_handler; @@ -39,10 +40,11 @@ extern struct xattr_handler jffs2_acl_default_xattr_handler; #else -#define jffs2_get_acl(inode, type) (NULL) -#define jffs2_permission NULL -#define jffs2_acl_chmod(inode) (0) -#define jffs2_init_acl(inode,dir) (0) +#define jffs2_get_acl(inode, type) (NULL) +#define jffs2_permission (NULL) +#define jffs2_acl_chmod(inode) (0) +#define jffs2_init_acl_pre(dir_i,inode,mode) (0) +#define jffs2_init_acl_post(inode) (0) #define jffs2_clear_acl(f) #endif /* CONFIG_JFFS2_FS_POSIX_ACL */ diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c index 8353eb9c1799..787e392ffd41 100644 --- a/fs/jffs2/dir.c +++ b/fs/jffs2/dir.c @@ -182,7 +182,6 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode, struct jffs2_inode_info *f, *dir_f; struct jffs2_sb_info *c; struct inode *inode; - struct posix_acl *acl; int ret; ri = jffs2_alloc_raw_inode(); @@ -193,7 +192,7 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode, D1(printk(KERN_DEBUG "jffs2_create()\n")); - inode = jffs2_new_inode(dir_i, mode, ri, &acl); + inode = jffs2_new_inode(dir_i, mode, ri); if (IS_ERR(inode)) { D1(printk(KERN_DEBUG "jffs2_new_inode() failed\n")); @@ -211,14 +210,6 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode, ret = jffs2_do_create(c, dir_f, f, ri, dentry->d_name.name, dentry->d_name.len); - - if (ret) - goto fail_acl; - - ret = jffs2_init_security(inode, dir_i); - if (ret) - goto fail_acl; - ret = jffs2_init_acl(inode, acl); if (ret) goto fail; @@ -231,8 +222,6 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode, inode->i_ino, inode->i_mode, inode->i_nlink, f->inocache->nlink, inode->i_mapping->nrpages)); return 0; - fail_acl: - posix_acl_release(acl); fail: make_bad_inode(inode); iput(inode); @@ -309,7 +298,6 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char struct jffs2_full_dirent *fd; int namelen; uint32_t alloclen; - struct posix_acl *acl; int ret, targetlen = strlen(target); /* FIXME: If you care. We'd need to use frags for the target @@ -336,7 +324,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char return ret; } - inode = jffs2_new_inode(dir_i, S_IFLNK | S_IRWXUGO, ri, &acl); + inode = jffs2_new_inode(dir_i, S_IFLNK | S_IRWXUGO, ri); if (IS_ERR(inode)) { jffs2_free_raw_inode(ri); @@ -366,7 +354,6 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char up(&f->sem); jffs2_complete_reservation(c); jffs2_clear_inode(inode); - posix_acl_release(acl); return PTR_ERR(fn); } @@ -377,7 +364,6 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char up(&f->sem); jffs2_complete_reservation(c); jffs2_clear_inode(inode); - posix_acl_release(acl); return -ENOMEM; } @@ -395,10 +381,9 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char ret = jffs2_init_security(inode, dir_i); if (ret) { jffs2_clear_inode(inode); - posix_acl_release(acl); return ret; } - ret = jffs2_init_acl(inode, acl); + ret = jffs2_init_acl_post(inode); if (ret) { jffs2_clear_inode(inode); return ret; @@ -476,7 +461,6 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode) struct jffs2_full_dirent *fd; int namelen; uint32_t alloclen; - struct posix_acl *acl; int ret; mode |= S_IFDIR; @@ -499,7 +483,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode) return ret; } - inode = jffs2_new_inode(dir_i, mode, ri, &acl); + inode = jffs2_new_inode(dir_i, mode, ri); if (IS_ERR(inode)) { jffs2_free_raw_inode(ri); @@ -526,7 +510,6 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode) up(&f->sem); jffs2_complete_reservation(c); jffs2_clear_inode(inode); - posix_acl_release(acl); return PTR_ERR(fn); } /* No data here. Only a metadata node, which will be @@ -540,10 +523,9 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode) ret = jffs2_init_security(inode, dir_i); if (ret) { jffs2_clear_inode(inode); - posix_acl_release(acl); return ret; } - ret = jffs2_init_acl(inode, acl); + ret = jffs2_init_acl_post(inode); if (ret) { jffs2_clear_inode(inode); return ret; @@ -639,7 +621,6 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de union jffs2_device_node dev; int devlen = 0; uint32_t alloclen; - struct posix_acl *acl; int ret; if (!new_valid_dev(rdev)) @@ -666,7 +647,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de return ret; } - inode = jffs2_new_inode(dir_i, mode, ri, &acl); + inode = jffs2_new_inode(dir_i, mode, ri); if (IS_ERR(inode)) { jffs2_free_raw_inode(ri); @@ -695,7 +676,6 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de up(&f->sem); jffs2_complete_reservation(c); jffs2_clear_inode(inode); - posix_acl_release(acl); return PTR_ERR(fn); } /* No data here. Only a metadata node, which will be @@ -709,10 +689,9 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de ret = jffs2_init_security(inode, dir_i); if (ret) { jffs2_clear_inode(inode); - posix_acl_release(acl); return ret; } - ret = jffs2_init_acl(inode, acl); + ret = jffs2_init_acl_post(inode); if (ret) { jffs2_clear_inode(inode); return ret; diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c index 023a17539dd4..f9c5dd6f4b64 100644 --- a/fs/jffs2/file.c +++ b/fs/jffs2/file.c @@ -255,7 +255,7 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping, _whole_ page. This helps to reduce the number of nodes in files which have many short writes, like syslog files. */ - start = aligned_start = 0; + aligned_start = 0; } ri = jffs2_alloc_raw_inode(); @@ -291,14 +291,11 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping, } /* Adjust writtenlen for the padding we did, so we don't confuse our caller */ - if (writtenlen < (start&3)) - writtenlen = 0; - else - writtenlen -= (start&3); + writtenlen -= min(writtenlen, (start - aligned_start)); if (writtenlen) { - if (inode->i_size < (pg->index << PAGE_CACHE_SHIFT) + start + writtenlen) { - inode->i_size = (pg->index << PAGE_CACHE_SHIFT) + start + writtenlen; + if (inode->i_size < pos + writtenlen) { + inode->i_size = pos + writtenlen; inode->i_blocks = (inode->i_size + 511) >> 9; inode->i_ctime = inode->i_mtime = ITIME(je32_to_cpu(ri->ctime)); diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index ed85f9afdbc8..d2e06f7ea96f 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -402,8 +402,7 @@ void jffs2_write_super (struct super_block *sb) /* jffs2_new_inode: allocate a new inode and inocache, add it to the hash, fill in the raw_inode while you're at it. */ -struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_inode *ri, - struct posix_acl **acl) +struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_inode *ri) { struct inode *inode; struct super_block *sb = dir_i->i_sb; @@ -438,19 +437,11 @@ struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_i /* POSIX ACLs have to be processed now, at least partly. The umask is only applied if there's no default ACL */ - if (!S_ISLNK(mode)) { - *acl = jffs2_get_acl(dir_i, ACL_TYPE_DEFAULT); - if (IS_ERR(*acl)) { - make_bad_inode(inode); - iput(inode); - inode = (void *)*acl; - *acl = NULL; - return inode; - } - if (!(*acl)) - mode &= ~current->fs->umask; - } else { - *acl = NULL; + ret = jffs2_init_acl_pre(dir_i, inode, &mode); + if (ret) { + make_bad_inode(inode); + iput(inode); + return ERR_PTR(ret); } ret = jffs2_do_new_inode (c, f, mode, ri); if (ret) { diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h index f6743a915cf3..bf64686cf098 100644 --- a/fs/jffs2/os-linux.h +++ b/fs/jffs2/os-linux.h @@ -173,15 +173,13 @@ int jffs2_ioctl(struct inode *, struct file *, unsigned int, unsigned long); extern const struct inode_operations jffs2_symlink_inode_operations; /* fs.c */ -struct posix_acl; - int jffs2_setattr (struct dentry *, struct iattr *); int jffs2_do_setattr (struct inode *, struct iattr *); void jffs2_read_inode (struct inode *); void jffs2_clear_inode (struct inode *); void jffs2_dirty_inode(struct inode *inode); struct inode *jffs2_new_inode (struct inode *dir_i, int mode, - struct jffs2_raw_inode *ri, struct posix_acl **acl); + struct jffs2_raw_inode *ri); int jffs2_statfs (struct dentry *, struct kstatfs *); void jffs2_write_super (struct super_block *); int jffs2_remount_fs (struct super_block *, int *, char *); diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c index 2f5695446d0f..147e2cbee9e4 100644 --- a/fs/jffs2/write.c +++ b/fs/jffs2/write.c @@ -465,6 +465,14 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str up(&f->sem); jffs2_complete_reservation(c); + + ret = jffs2_init_security(&f->vfs_inode, &dir_f->vfs_inode); + if (ret) + return ret; + ret = jffs2_init_acl_post(&f->vfs_inode); + if (ret) + return ret; + ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen, ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen)); |