diff options
author | Jeff Dike <jdike@addtoit.com> | 2007-10-16 01:27:13 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:43:07 -0700 |
commit | 84b3db04ca15a90273745e391462faf658b1e825 (patch) | |
tree | 0a2d3e591ab26d0a98d492119396497210a351ec /fs/hostfs/hostfs_kern.c | |
parent | baabd156e243e513873417b62e51346ece609934 (diff) |
uml: fix hostfs style
Style fixes in hostfs.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/hostfs/hostfs_kern.c')
-rw-r--r-- | fs/hostfs/hostfs_kern.c | 226 |
1 files changed, 115 insertions, 111 deletions
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index 39b0cdcc94d0..8966b050196e 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -6,21 +6,14 @@ * 2003-02-10 Petr Baudis <pasky@ucw.cz> */ -#include <linux/stddef.h> #include <linux/fs.h> #include <linux/module.h> -#include <linux/init.h> -#include <linux/slab.h> +#include <linux/mm.h> #include <linux/pagemap.h> -#include <linux/blkdev.h> -#include <linux/list.h> #include <linux/statfs.h> -#include <linux/kdev_t.h> -#include <asm/uaccess.h> #include "hostfs.h" -#include "kern_util.h" -#include "kern.h" #include "init.h" +#include "kern.h" struct hostfs_inode_info { char *host_filename; @@ -61,18 +54,18 @@ static int __init hostfs_args(char *options, int *add) char *ptr; ptr = strchr(options, ','); - if(ptr != NULL) + if (ptr != NULL) *ptr++ = '\0'; - if(*options != '\0') + if (*options != '\0') root_ino = options; options = ptr; - while(options){ + while (options) { ptr = strchr(options, ','); - if(ptr != NULL) + if (ptr != NULL) *ptr++ = '\0'; - if(*options != '\0'){ - if(!strcmp(options, "append")) + if (*options != '\0') { + if (!strcmp(options, "append")) append = 1; else printf("hostfs_args - unsupported option - %s\n", options); @@ -102,7 +95,7 @@ static char *dentry_name(struct dentry *dentry, int extra) len = 0; parent = dentry; - while(parent->d_parent != parent){ + while (parent->d_parent != parent) { len += parent->d_name.len + 1; parent = parent->d_parent; } @@ -110,12 +103,12 @@ static char *dentry_name(struct dentry *dentry, int extra) root = HOSTFS_I(parent->d_inode)->host_filename; len += strlen(root); name = kmalloc(len + extra + 1, GFP_KERNEL); - if(name == NULL) + if (name == NULL) return NULL; name[len] = '\0'; parent = dentry; - while(parent->d_parent != parent){ + while (parent->d_parent != parent) { len -= parent->d_name.len + 1; name[len] = '/'; strncpy(&name[len + 1], parent->d_name.name, @@ -136,7 +129,8 @@ static char *inode_name(struct inode *ino, int extra) static int read_name(struct inode *ino, char *name) { - /* The non-int inode fields are copied into ints by stat_file and + /* + * The non-int inode fields are copied into ints by stat_file and * then copied into the inode because passing the actual pointers * in and having them treated as int * breaks on big-endian machines */ @@ -149,7 +143,7 @@ static int read_name(struct inode *ino, char *name) err = stat_file(name, &i_ino, &i_mode, &i_nlink, &ino->i_uid, &ino->i_gid, &i_size, &ino->i_atime, &ino->i_mtime, &ino->i_ctime, &i_blksize, &i_blocks, -1); - if(err) + if (err) return err; ino->i_ino = i_ino; @@ -166,33 +160,33 @@ static char *follow_link(char *link) char *name, *resolved, *end; len = 64; - while(1){ + while (1) { n = -ENOMEM; name = kmalloc(len, GFP_KERNEL); - if(name == NULL) + if (name == NULL) goto out; n = do_readlink(link, name, len); - if(n < len) + if (n < len) break; len *= 2; kfree(name); } - if(n < 0) + if (n < 0) goto out_free; - if(*name == '/') + if (*name == '/') return name; end = strrchr(link, '/'); - if(end == NULL) + if (end == NULL) return name; *(end + 1) = '\0'; len = strlen(link) + strlen(name) + 1; resolved = kmalloc(len, GFP_KERNEL); - if(resolved == NULL){ + if (resolved == NULL) { n = -ENOMEM; goto out_free; } @@ -213,20 +207,21 @@ static int read_inode(struct inode *ino) char *name; int err = 0; - /* Unfortunately, we are called from iget() when we don't have a dentry + /* + * Unfortunately, we are called from iget() when we don't have a dentry * allocated yet. */ - if(list_empty(&ino->i_dentry)) + if (list_empty(&ino->i_dentry)) goto out; err = -ENOMEM; name = inode_name(ino, 0); - if(name == NULL) + if (name == NULL) goto out; - if(file_type(name, NULL, NULL) == OS_TYPE_SYMLINK){ + if (file_type(name, NULL, NULL) == OS_TYPE_SYMLINK) { name = follow_link(name); - if(IS_ERR(name)){ + if (IS_ERR(name)) { err = PTR_ERR(name); goto out; } @@ -240,7 +235,8 @@ static int read_inode(struct inode *ino) int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf) { - /* do_statfs uses struct statfs64 internally, but the linux kernel + /* + * do_statfs uses struct statfs64 internally, but the linux kernel * struct statfs still has 32-bit versions for most of these fields, * so we convert them here */ @@ -255,7 +251,7 @@ int hostfs_statfs(struct dentry *dentry, struct kstatfs *sf) &sf->f_bsize, &f_blocks, &f_bfree, &f_bavail, &f_files, &f_ffree, &sf->f_fsid, sizeof(sf->f_fsid), &sf->f_namelen, sf->f_spare); - if(err) + if (err) return err; sf->f_blocks = f_blocks; sf->f_bfree = f_bfree; @@ -271,7 +267,7 @@ static struct inode *hostfs_alloc_inode(struct super_block *sb) struct hostfs_inode_info *hi; hi = kmalloc(sizeof(*hi), GFP_KERNEL); - if(hi == NULL) + if (hi == NULL) return NULL; *hi = ((struct hostfs_inode_info) { .host_filename = NULL, @@ -284,7 +280,7 @@ static struct inode *hostfs_alloc_inode(struct super_block *sb) static void hostfs_delete_inode(struct inode *inode) { truncate_inode_pages(&inode->i_data, 0); - if(HOSTFS_I(inode)->fd != -1) { + if (HOSTFS_I(inode)->fd != -1) { close_file(&HOSTFS_I(inode)->fd); HOSTFS_I(inode)->fd = -1; } @@ -295,9 +291,11 @@ static void hostfs_destroy_inode(struct inode *inode) { kfree(HOSTFS_I(inode)->host_filename); - /*XXX: This should not happen, probably. The check is here for - * additional safety.*/ - if(HOSTFS_I(inode)->fd != -1) { + /* + * XXX: This should not happen, probably. The check is here for + * additional safety. + */ + if (HOSTFS_I(inode)->fd != -1) { close_file(&HOSTFS_I(inode)->fd); printk(KERN_DEBUG "Closing host fd in .destroy_inode\n"); } @@ -327,17 +325,17 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir) int error, len; name = dentry_name(file->f_path.dentry, 0); - if(name == NULL) + if (name == NULL) return -ENOMEM; dir = open_dir(name, &error); kfree(name); - if(dir == NULL) + if (dir == NULL) return -error; next = file->f_pos; - while((name = read_dir(dir, &next, &ino, &len)) != NULL){ + while ((name = read_dir(dir, &next, &ino, &len)) != NULL) { error = (*filldir)(ent, name, len, file->f_pos, ino, DT_UNKNOWN); - if(error) break; + if (error) break; file->f_pos = next; } close_dir(dir); @@ -350,32 +348,33 @@ int hostfs_file_open(struct inode *ino, struct file *file) int mode = 0, r = 0, w = 0, fd; mode = file->f_mode & (FMODE_READ | FMODE_WRITE); - if((mode & HOSTFS_I(ino)->mode) == mode) + if ((mode & HOSTFS_I(ino)->mode) == mode) return 0; - /* The file may already have been opened, but with the wrong access, + /* + * The file may already have been opened, but with the wrong access, * so this resets things and reopens the file with the new access. */ - if(HOSTFS_I(ino)->fd != -1){ + if (HOSTFS_I(ino)->fd != -1) { close_file(&HOSTFS_I(ino)->fd); HOSTFS_I(ino)->fd = -1; } HOSTFS_I(ino)->mode |= mode; - if(HOSTFS_I(ino)->mode & FMODE_READ) + if (HOSTFS_I(ino)->mode & FMODE_READ) r = 1; - if(HOSTFS_I(ino)->mode & FMODE_WRITE) + if (HOSTFS_I(ino)->mode & FMODE_WRITE) w = 1; - if(w) + if (w) r = 1; name = dentry_name(file->f_path.dentry, 0); - if(name == NULL) + if (name == NULL) return -ENOMEM; fd = open_file(name, r, w, append); kfree(name); - if(fd < 0) + if (fd < 0) return fd; FILE_HOSTFS_I(file)->fd = fd; @@ -423,7 +422,7 @@ int hostfs_writepage(struct page *page, struct writeback_control *wbc) base = ((unsigned long long) page->index) << PAGE_CACHE_SHIFT; err = write_file(HOSTFS_I(inode)->fd, &base, buffer, count); - if(err != count){ + if (err != count) { ClearPageUptodate(page); goto out; } @@ -452,7 +451,8 @@ int hostfs_readpage(struct file *file, struct page *page) buffer = kmap(page); err = read_file(FILE_HOSTFS_I(file)->fd, &start, buffer, PAGE_CACHE_SIZE); - if(err < 0) goto out; + if (err < 0) + goto out; memset(&buffer[err], 0, PAGE_CACHE_SIZE - err); @@ -494,7 +494,8 @@ int hostfs_write_end(struct file *file, struct address_space *mapping, if (!PageUptodate(page) && err == PAGE_CACHE_SIZE) SetPageUptodate(page); - /* If err > 0, write_file has added err to pos, so we are comparing + /* + * If err > 0, write_file has added err to pos, so we are comparing * i_size against the last byte written. */ if (err > 0 && (pos > inode->i_size)) @@ -520,28 +521,28 @@ static int init_inode(struct inode *inode, struct dentry *dentry) int maj, min; dev_t rdev = 0; - if(dentry){ + if (dentry) { name = dentry_name(dentry, 0); - if(name == NULL) + if (name == NULL) goto out; type = file_type(name, &maj, &min); - /*Reencode maj and min with the kernel encoding.*/ + /* Reencode maj and min with the kernel encoding.*/ rdev = MKDEV(maj, min); kfree(name); } else type = OS_TYPE_DIR; err = 0; - if(type == OS_TYPE_SYMLINK) + if (type == OS_TYPE_SYMLINK) inode->i_op = &page_symlink_inode_operations; - else if(type == OS_TYPE_DIR) + else if (type == OS_TYPE_DIR) inode->i_op = &hostfs_dir_iops; else inode->i_op = &hostfs_iops; - if(type == OS_TYPE_DIR) inode->i_fop = &hostfs_dir_fops; + if (type == OS_TYPE_DIR) inode->i_fop = &hostfs_dir_fops; else inode->i_fop = &hostfs_file_fops; - if(type == OS_TYPE_SYMLINK) + if (type == OS_TYPE_SYMLINK) inode->i_mapping->a_ops = &hostfs_link_aops; else inode->i_mapping->a_ops = &hostfs_aops; @@ -564,7 +565,7 @@ static int init_inode(struct inode *inode, struct dentry *dentry) } int hostfs_create(struct inode *dir, struct dentry *dentry, int mode, - struct nameidata *nd) + struct nameidata *nd) { struct inode *inode; char *name; @@ -572,27 +573,28 @@ int hostfs_create(struct inode *dir, struct dentry *dentry, int mode, error = -ENOMEM; inode = iget(dir->i_sb, 0); - if(inode == NULL) goto out; + if (inode == NULL) + goto out; error = init_inode(inode, dentry); - if(error) + if (error) goto out_put; error = -ENOMEM; name = dentry_name(dentry, 0); - if(name == NULL) + if (name == NULL) goto out_put; fd = file_create(name, mode & S_IRUSR, mode & S_IWUSR, mode & S_IXUSR, mode & S_IRGRP, mode & S_IWGRP, mode & S_IXGRP, mode & S_IROTH, mode & S_IWOTH, mode & S_IXOTH); - if(fd < 0) + if (fd < 0) error = fd; else error = read_name(inode, name); kfree(name); - if(error) + if (error) goto out_put; HOSTFS_I(inode)->fd = fd; @@ -615,25 +617,25 @@ struct dentry *hostfs_lookup(struct inode *ino, struct dentry *dentry, err = -ENOMEM; inode = iget(ino->i_sb, 0); - if(inode == NULL) + if (inode == NULL) goto out; err = init_inode(inode, dentry); - if(err) + if (err) goto out_put; err = -ENOMEM; name = dentry_name(dentry, 0); - if(name == NULL) + if (name == NULL) goto out_put; err = read_name(inode, name); kfree(name); - if(err == -ENOENT){ + if (err == -ENOENT) { iput(inode); inode = NULL; } - else if(err) + else if (err) goto out_put; d_add(dentry, inode); @@ -652,7 +654,7 @@ static char *inode_dentry_name(struct inode *ino, struct dentry *dentry) int len; file = inode_name(ino, dentry->d_name.len + 1); - if(file == NULL) + if (file == NULL) return NULL; strcat(file, "/"); len = strlen(file); @@ -666,10 +668,10 @@ int hostfs_link(struct dentry *to, struct inode *ino, struct dentry *from) char *from_name, *to_name; int err; - if((from_name = inode_dentry_name(ino, from)) == NULL) + if ((from_name = inode_dentry_name(ino, from)) == NULL) return -ENOMEM; to_name = dentry_name(to, 0); - if(to_name == NULL){ + if (to_name == NULL) { kfree(from_name); return -ENOMEM; } @@ -684,9 +686,9 @@ int hostfs_unlink(struct inode *ino, struct dentry *dentry) char *file; int err; - if((file = inode_dentry_name(ino, dentry)) == NULL) + if ((file = inode_dentry_name(ino, dentry)) == NULL) return -ENOMEM; - if(append) + if (append) return -EPERM; err = unlink_file(file); @@ -699,7 +701,7 @@ int hostfs_symlink(struct inode *ino, struct dentry *dentry, const char *to) char *file; int err; - if((file = inode_dentry_name(ino, dentry)) == NULL) + if ((file = inode_dentry_name(ino, dentry)) == NULL) return -ENOMEM; err = make_symlink(file, to); kfree(file); @@ -711,7 +713,7 @@ int hostfs_mkdir(struct inode *ino, struct dentry *dentry, int mode) char *file; int err; - if((file = inode_dentry_name(ino, dentry)) == NULL) + if ((file = inode_dentry_name(ino, dentry)) == NULL) return -ENOMEM; err = do_mkdir(file, mode); kfree(file); @@ -723,7 +725,7 @@ int hostfs_rmdir(struct inode *ino, struct dentry *dentry) char *file; int err; - if((file = inode_dentry_name(ino, dentry)) == NULL) + if ((file = inode_dentry_name(ino, dentry)) == NULL) return -ENOMEM; err = do_rmdir(file); kfree(file); @@ -737,26 +739,26 @@ int hostfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev) int err = -ENOMEM; inode = iget(dir->i_sb, 0); - if(inode == NULL) + if (inode == NULL) goto out; err = init_inode(inode, dentry); - if(err) + if (err) goto out_put; err = -ENOMEM; name = dentry_name(dentry, 0); - if(name == NULL) + if (name == NULL) goto out_put; init_special_inode(inode, mode, dev); err = do_mknod(name, mode, MAJOR(dev), MINOR(dev)); - if(err) + if (err) goto out_free; err = read_name(inode, name); kfree(name); - if(err) + if (err) goto out_put; d_instantiate(dentry, inode); @@ -776,9 +778,9 @@ int hostfs_rename(struct inode *from_ino, struct dentry *from, char *from_name, *to_name; int err; - if((from_name = inode_dentry_name(from_ino, from)) == NULL) + if ((from_name = inode_dentry_name(from_ino, from)) == NULL) return -ENOMEM; - if((to_name = inode_dentry_name(to_ino, to)) == NULL){ + if ((to_name = inode_dentry_name(to_ino, to)) == NULL) { kfree(from_name); return -ENOMEM; } @@ -801,12 +803,12 @@ int hostfs_permission(struct inode *ino, int desired, struct nameidata *nd) return -ENOMEM; if (S_ISCHR(ino->i_mode) || S_ISBLK(ino->i_mode) || - S_ISFIFO(ino->i_mode) || S_ISSOCK(ino->i_mode)) + S_ISFIFO(ino->i_mode) || S_ISSOCK(ino->i_mode)) err = 0; else err = access_file(name, r, w, x); kfree(name); - if(!err) + if (!err) err = generic_permission(ino, desired, NULL); return err; } @@ -823,50 +825,50 @@ int hostfs_setattr(struct dentry *dentry, struct iattr *attr) if (err) return err; - if(append) + if (append) attr->ia_valid &= ~ATTR_SIZE; attrs.ia_valid = 0; - if(attr->ia_valid & ATTR_MODE){ + if (attr->ia_valid & ATTR_MODE) { attrs.ia_valid |= HOSTFS_ATTR_MODE; attrs.ia_mode = attr->ia_mode; } - if(attr->ia_valid & ATTR_UID){ + if (attr->ia_valid & ATTR_UID) { attrs.ia_valid |= HOSTFS_ATTR_UID; attrs.ia_uid = attr->ia_uid; } - if(attr->ia_valid & ATTR_GID){ + if (attr->ia_valid & ATTR_GID) { attrs.ia_valid |= HOSTFS_ATTR_GID; attrs.ia_gid = attr->ia_gid; } - if(attr->ia_valid & ATTR_SIZE){ + if (attr->ia_valid & ATTR_SIZE) { attrs.ia_valid |= HOSTFS_ATTR_SIZE; attrs.ia_size = attr->ia_size; } - if(attr->ia_valid & ATTR_ATIME){ + if (attr->ia_valid & ATTR_ATIME) { attrs.ia_valid |= HOSTFS_ATTR_ATIME; attrs.ia_atime = attr->ia_atime; } - if(attr->ia_valid & ATTR_MTIME){ + if (attr->ia_valid & ATTR_MTIME) { attrs.ia_valid |= HOSTFS_ATTR_MTIME; attrs.ia_mtime = attr->ia_mtime; } - if(attr->ia_valid & ATTR_CTIME){ + if (attr->ia_valid & ATTR_CTIME) { attrs.ia_valid |= HOSTFS_ATTR_CTIME; attrs.ia_ctime = attr->ia_ctime; } - if(attr->ia_valid & ATTR_ATIME_SET){ + if (attr->ia_valid & ATTR_ATIME_SET) { attrs.ia_valid |= HOSTFS_ATTR_ATIME_SET; } - if(attr->ia_valid & ATTR_MTIME_SET){ + if (attr->ia_valid & ATTR_MTIME_SET) { attrs.ia_valid |= HOSTFS_ATTR_MTIME_SET; } name = dentry_name(dentry, 0); - if(name == NULL) + if (name == NULL) return -ENOMEM; err = set_attr(name, &attrs, fd); kfree(name); - if(err) + if (err) return err; return inode_setattr(dentry->d_inode, attr); @@ -906,13 +908,13 @@ int hostfs_link_readpage(struct file *file, struct page *page) buffer = kmap(page); name = inode_name(page->mapping->host, 0); - if(name == NULL) + if (name == NULL) return -ENOMEM; err = do_readlink(name, buffer, PAGE_CACHE_SIZE); kfree(name); - if(err == PAGE_CACHE_SIZE) + if (err == PAGE_CACHE_SIZE) err = -E2BIG; - else if(err > 0){ + else if (err > 0) { flush_dcache_page(page); SetPageUptodate(page); if (PageError(page)) ClearPageError(page); @@ -945,31 +947,33 @@ static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent) err = -ENOMEM; host_root_path = kmalloc(strlen(root_ino) + 1 + strlen(req_root) + 1, GFP_KERNEL); - if(host_root_path == NULL) + if (host_root_path == NULL) goto out; sprintf(host_root_path, "%s/%s", root_ino, req_root); root_inode = iget(sb, 0); - if(root_inode == NULL) + if (root_inode == NULL) goto out_free; err = init_inode(root_inode, NULL); - if(err) + if (err) goto out_put; HOSTFS_I(root_inode)->host_filename = host_root_path; - /* Avoid that in the error path, iput(root_inode) frees again - * host_root_path through hostfs_destroy_inode! */ + /* + * Avoid that in the error path, iput(root_inode) frees again + * host_root_path through hostfs_destroy_inode! + */ host_root_path = NULL; err = -ENOMEM; sb->s_root = d_alloc_root(root_inode); - if(sb->s_root == NULL) + if (sb->s_root == NULL) goto out_put; err = read_inode(root_inode); - if(err){ + if (err) { /* No iput in this case because the dput does that for us */ dput(sb->s_root); sb->s_root = NULL; |