diff options
author | 2017-04-25 03:31:15 -0700 | |
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committer | 2017-05-22 06:48:08 +0000 | |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/hw/9pfs/9p-synth.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/hw/9pfs/9p-synth.c')
-rw-r--r-- | qemu/hw/9pfs/9p-synth.c | 574 |
1 files changed, 0 insertions, 574 deletions
diff --git a/qemu/hw/9pfs/9p-synth.c b/qemu/hw/9pfs/9p-synth.c deleted file mode 100644 index f1475dfd6..000000000 --- a/qemu/hw/9pfs/9p-synth.c +++ /dev/null @@ -1,574 +0,0 @@ -/* - * Virtio 9p synthetic file system support - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * Malahal Naineni <malahal@us.ibm.com> - * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "hw/virtio/virtio.h" -#include "9p.h" -#include "9p-xattr.h" -#include "fsdev/qemu-fsdev.h" -#include "9p-synth.h" -#include "qemu/rcu.h" -#include "qemu/rcu_queue.h" -#include "qemu/cutils.h" - -/* Root node for synth file system */ -static V9fsSynthNode v9fs_synth_root = { - .name = "/", - .actual_attr = { - .mode = 0555 | S_IFDIR, - .nlink = 1, - }, - .attr = &v9fs_synth_root.actual_attr, -}; - -static QemuMutex v9fs_synth_mutex; -static int v9fs_synth_node_count; -/* set to 1 when the synth fs is ready */ -static int v9fs_synth_fs; - -static V9fsSynthNode *v9fs_add_dir_node(V9fsSynthNode *parent, int mode, - const char *name, - V9fsSynthNodeAttr *attr, int inode) -{ - V9fsSynthNode *node; - - /* Add directory type and remove write bits */ - mode = ((mode & 0777) | S_IFDIR) & ~(S_IWUSR | S_IWGRP | S_IWOTH); - node = g_malloc0(sizeof(V9fsSynthNode)); - if (attr) { - /* We are adding .. or . entries */ - node->attr = attr; - node->attr->nlink++; - } else { - node->attr = &node->actual_attr; - node->attr->inode = inode; - node->attr->nlink = 1; - /* We don't allow write to directories */ - node->attr->mode = mode; - node->attr->write = NULL; - node->attr->read = NULL; - } - node->private = node; - pstrcpy(node->name, sizeof(node->name), name); - QLIST_INSERT_HEAD_RCU(&parent->child, node, sibling); - return node; -} - -int qemu_v9fs_synth_mkdir(V9fsSynthNode *parent, int mode, - const char *name, V9fsSynthNode **result) -{ - int ret; - V9fsSynthNode *node, *tmp; - - if (!v9fs_synth_fs) { - return EAGAIN; - } - if (!name || (strlen(name) >= NAME_MAX)) { - return EINVAL; - } - if (!parent) { - parent = &v9fs_synth_root; - } - qemu_mutex_lock(&v9fs_synth_mutex); - QLIST_FOREACH(tmp, &parent->child, sibling) { - if (!strcmp(tmp->name, name)) { - ret = EEXIST; - goto err_out; - } - } - /* Add the name */ - node = v9fs_add_dir_node(parent, mode, name, NULL, v9fs_synth_node_count++); - v9fs_add_dir_node(node, parent->attr->mode, "..", - parent->attr, parent->attr->inode); - v9fs_add_dir_node(node, node->attr->mode, ".", - node->attr, node->attr->inode); - *result = node; - ret = 0; -err_out: - qemu_mutex_unlock(&v9fs_synth_mutex); - return ret; -} - -int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode, - const char *name, v9fs_synth_read read, - v9fs_synth_write write, void *arg) -{ - int ret; - V9fsSynthNode *node, *tmp; - - if (!v9fs_synth_fs) { - return EAGAIN; - } - if (!name || (strlen(name) >= NAME_MAX)) { - return EINVAL; - } - if (!parent) { - parent = &v9fs_synth_root; - } - - qemu_mutex_lock(&v9fs_synth_mutex); - QLIST_FOREACH(tmp, &parent->child, sibling) { - if (!strcmp(tmp->name, name)) { - ret = EEXIST; - goto err_out; - } - } - /* Add file type and remove write bits */ - mode = ((mode & 0777) | S_IFREG); - node = g_malloc0(sizeof(V9fsSynthNode)); - node->attr = &node->actual_attr; - node->attr->inode = v9fs_synth_node_count++; - node->attr->nlink = 1; - node->attr->read = read; - node->attr->write = write; - node->attr->mode = mode; - node->private = arg; - pstrcpy(node->name, sizeof(node->name), name); - QLIST_INSERT_HEAD_RCU(&parent->child, node, sibling); - ret = 0; -err_out: - qemu_mutex_unlock(&v9fs_synth_mutex); - return ret; -} - -static void v9fs_synth_fill_statbuf(V9fsSynthNode *node, struct stat *stbuf) -{ - stbuf->st_dev = 0; - stbuf->st_ino = node->attr->inode; - stbuf->st_mode = node->attr->mode; - stbuf->st_nlink = node->attr->nlink; - stbuf->st_uid = 0; - stbuf->st_gid = 0; - stbuf->st_rdev = 0; - stbuf->st_size = 0; - stbuf->st_blksize = 0; - stbuf->st_blocks = 0; - stbuf->st_atime = 0; - stbuf->st_mtime = 0; - stbuf->st_ctime = 0; -} - -static int v9fs_synth_lstat(FsContext *fs_ctx, - V9fsPath *fs_path, struct stat *stbuf) -{ - V9fsSynthNode *node = *(V9fsSynthNode **)fs_path->data; - - v9fs_synth_fill_statbuf(node, stbuf); - return 0; -} - -static int v9fs_synth_fstat(FsContext *fs_ctx, int fid_type, - V9fsFidOpenState *fs, struct stat *stbuf) -{ - V9fsSynthOpenState *synth_open = fs->private; - v9fs_synth_fill_statbuf(synth_open->node, stbuf); - return 0; -} - -static int v9fs_synth_opendir(FsContext *ctx, - V9fsPath *fs_path, V9fsFidOpenState *fs) -{ - V9fsSynthOpenState *synth_open; - V9fsSynthNode *node = *(V9fsSynthNode **)fs_path->data; - - synth_open = g_malloc(sizeof(*synth_open)); - synth_open->node = node; - node->open_count++; - fs->private = synth_open; - return 0; -} - -static int v9fs_synth_closedir(FsContext *ctx, V9fsFidOpenState *fs) -{ - V9fsSynthOpenState *synth_open = fs->private; - V9fsSynthNode *node = synth_open->node; - - node->open_count--; - g_free(synth_open); - fs->private = NULL; - return 0; -} - -static off_t v9fs_synth_telldir(FsContext *ctx, V9fsFidOpenState *fs) -{ - V9fsSynthOpenState *synth_open = fs->private; - return synth_open->offset; -} - -static void v9fs_synth_seekdir(FsContext *ctx, V9fsFidOpenState *fs, off_t off) -{ - V9fsSynthOpenState *synth_open = fs->private; - synth_open->offset = off; -} - -static void v9fs_synth_rewinddir(FsContext *ctx, V9fsFidOpenState *fs) -{ - v9fs_synth_seekdir(ctx, fs, 0); -} - -static void v9fs_synth_direntry(V9fsSynthNode *node, - struct dirent *entry, off_t off) -{ - strcpy(entry->d_name, node->name); - entry->d_ino = node->attr->inode; - entry->d_off = off + 1; -} - -static int v9fs_synth_get_dentry(V9fsSynthNode *dir, struct dirent *entry, - struct dirent **result, off_t off) -{ - int i = 0; - V9fsSynthNode *node; - - rcu_read_lock(); - QLIST_FOREACH(node, &dir->child, sibling) { - /* This is the off child of the directory */ - if (i == off) { - break; - } - i++; - } - rcu_read_unlock(); - if (!node) { - /* end of directory */ - *result = NULL; - return 0; - } - v9fs_synth_direntry(node, entry, off); - *result = entry; - return 0; -} - -static int v9fs_synth_readdir_r(FsContext *ctx, V9fsFidOpenState *fs, - struct dirent *entry, struct dirent **result) -{ - int ret; - V9fsSynthOpenState *synth_open = fs->private; - V9fsSynthNode *node = synth_open->node; - ret = v9fs_synth_get_dentry(node, entry, result, synth_open->offset); - if (!ret && *result != NULL) { - synth_open->offset++; - } - return ret; -} - -static int v9fs_synth_open(FsContext *ctx, V9fsPath *fs_path, - int flags, V9fsFidOpenState *fs) -{ - V9fsSynthOpenState *synth_open; - V9fsSynthNode *node = *(V9fsSynthNode **)fs_path->data; - - synth_open = g_malloc(sizeof(*synth_open)); - synth_open->node = node; - node->open_count++; - fs->private = synth_open; - return 0; -} - -static int v9fs_synth_open2(FsContext *fs_ctx, V9fsPath *dir_path, - const char *name, int flags, - FsCred *credp, V9fsFidOpenState *fs) -{ - errno = ENOSYS; - return -1; -} - -static int v9fs_synth_close(FsContext *ctx, V9fsFidOpenState *fs) -{ - V9fsSynthOpenState *synth_open = fs->private; - V9fsSynthNode *node = synth_open->node; - - node->open_count--; - g_free(synth_open); - fs->private = NULL; - return 0; -} - -static ssize_t v9fs_synth_pwritev(FsContext *ctx, V9fsFidOpenState *fs, - const struct iovec *iov, - int iovcnt, off_t offset) -{ - int i, count = 0, wcount; - V9fsSynthOpenState *synth_open = fs->private; - V9fsSynthNode *node = synth_open->node; - if (!node->attr->write) { - errno = EPERM; - return -1; - } - for (i = 0; i < iovcnt; i++) { - wcount = node->attr->write(iov[i].iov_base, iov[i].iov_len, - offset, node->private); - offset += wcount; - count += wcount; - /* If we wrote less than requested. we are done */ - if (wcount < iov[i].iov_len) { - break; - } - } - return count; -} - -static ssize_t v9fs_synth_preadv(FsContext *ctx, V9fsFidOpenState *fs, - const struct iovec *iov, - int iovcnt, off_t offset) -{ - int i, count = 0, rcount; - V9fsSynthOpenState *synth_open = fs->private; - V9fsSynthNode *node = synth_open->node; - if (!node->attr->read) { - errno = EPERM; - return -1; - } - for (i = 0; i < iovcnt; i++) { - rcount = node->attr->read(iov[i].iov_base, iov[i].iov_len, - offset, node->private); - offset += rcount; - count += rcount; - /* If we read less than requested. we are done */ - if (rcount < iov[i].iov_len) { - break; - } - } - return count; -} - -static int v9fs_synth_truncate(FsContext *ctx, V9fsPath *path, off_t offset) -{ - errno = ENOSYS; - return -1; -} - -static int v9fs_synth_chmod(FsContext *fs_ctx, V9fsPath *path, FsCred *credp) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_mknod(FsContext *fs_ctx, V9fsPath *path, - const char *buf, FsCred *credp) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_mkdir(FsContext *fs_ctx, V9fsPath *path, - const char *buf, FsCred *credp) -{ - errno = EPERM; - return -1; -} - -static ssize_t v9fs_synth_readlink(FsContext *fs_ctx, V9fsPath *path, - char *buf, size_t bufsz) -{ - errno = ENOSYS; - return -1; -} - -static int v9fs_synth_symlink(FsContext *fs_ctx, const char *oldpath, - V9fsPath *newpath, const char *buf, FsCred *credp) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_link(FsContext *fs_ctx, V9fsPath *oldpath, - V9fsPath *newpath, const char *buf) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_rename(FsContext *ctx, const char *oldpath, - const char *newpath) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_chown(FsContext *fs_ctx, V9fsPath *path, FsCred *credp) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_utimensat(FsContext *fs_ctx, V9fsPath *path, - const struct timespec *buf) -{ - errno = EPERM; - return 0; -} - -static int v9fs_synth_remove(FsContext *ctx, const char *path) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_fsync(FsContext *ctx, int fid_type, - V9fsFidOpenState *fs, int datasync) -{ - errno = ENOSYS; - return 0; -} - -static int v9fs_synth_statfs(FsContext *s, V9fsPath *fs_path, - struct statfs *stbuf) -{ - stbuf->f_type = 0xABCD; - stbuf->f_bsize = 512; - stbuf->f_blocks = 0; - stbuf->f_files = v9fs_synth_node_count; - stbuf->f_namelen = NAME_MAX; - return 0; -} - -static ssize_t v9fs_synth_lgetxattr(FsContext *ctx, V9fsPath *path, - const char *name, void *value, size_t size) -{ - errno = ENOTSUP; - return -1; -} - -static ssize_t v9fs_synth_llistxattr(FsContext *ctx, V9fsPath *path, - void *value, size_t size) -{ - errno = ENOTSUP; - return -1; -} - -static int v9fs_synth_lsetxattr(FsContext *ctx, V9fsPath *path, - const char *name, void *value, - size_t size, int flags) -{ - errno = ENOTSUP; - return -1; -} - -static int v9fs_synth_lremovexattr(FsContext *ctx, - V9fsPath *path, const char *name) -{ - errno = ENOTSUP; - return -1; -} - -static int v9fs_synth_name_to_path(FsContext *ctx, V9fsPath *dir_path, - const char *name, V9fsPath *target) -{ - V9fsSynthNode *node; - V9fsSynthNode *dir_node; - - /* "." and ".." are not allowed */ - if (!strcmp(name, ".") || !strcmp(name, "..")) { - errno = EINVAL; - return -1; - - } - if (!dir_path) { - dir_node = &v9fs_synth_root; - } else { - dir_node = *(V9fsSynthNode **)dir_path->data; - } - if (!strcmp(name, "/")) { - node = dir_node; - goto out; - } - /* search for the name in the childern */ - rcu_read_lock(); - QLIST_FOREACH(node, &dir_node->child, sibling) { - if (!strcmp(node->name, name)) { - break; - } - } - rcu_read_unlock(); - - if (!node) { - errno = ENOENT; - return -1; - } -out: - /* Copy the node pointer to fid */ - target->data = g_malloc(sizeof(void *)); - memcpy(target->data, &node, sizeof(void *)); - target->size = sizeof(void *); - return 0; -} - -static int v9fs_synth_renameat(FsContext *ctx, V9fsPath *olddir, - const char *old_name, V9fsPath *newdir, - const char *new_name) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_unlinkat(FsContext *ctx, V9fsPath *dir, - const char *name, int flags) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_init(FsContext *ctx) -{ - QLIST_INIT(&v9fs_synth_root.child); - qemu_mutex_init(&v9fs_synth_mutex); - - /* Add "." and ".." entries for root */ - v9fs_add_dir_node(&v9fs_synth_root, v9fs_synth_root.attr->mode, - "..", v9fs_synth_root.attr, v9fs_synth_root.attr->inode); - v9fs_add_dir_node(&v9fs_synth_root, v9fs_synth_root.attr->mode, - ".", v9fs_synth_root.attr, v9fs_synth_root.attr->inode); - - /* Mark the subsystem is ready for use */ - v9fs_synth_fs = 1; - return 0; -} - -FileOperations synth_ops = { - .init = v9fs_synth_init, - .lstat = v9fs_synth_lstat, - .readlink = v9fs_synth_readlink, - .close = v9fs_synth_close, - .closedir = v9fs_synth_closedir, - .open = v9fs_synth_open, - .opendir = v9fs_synth_opendir, - .rewinddir = v9fs_synth_rewinddir, - .telldir = v9fs_synth_telldir, - .readdir_r = v9fs_synth_readdir_r, - .seekdir = v9fs_synth_seekdir, - .preadv = v9fs_synth_preadv, - .pwritev = v9fs_synth_pwritev, - .chmod = v9fs_synth_chmod, - .mknod = v9fs_synth_mknod, - .mkdir = v9fs_synth_mkdir, - .fstat = v9fs_synth_fstat, - .open2 = v9fs_synth_open2, - .symlink = v9fs_synth_symlink, - .link = v9fs_synth_link, - .truncate = v9fs_synth_truncate, - .rename = v9fs_synth_rename, - .chown = v9fs_synth_chown, - .utimensat = v9fs_synth_utimensat, - .remove = v9fs_synth_remove, - .fsync = v9fs_synth_fsync, - .statfs = v9fs_synth_statfs, - .lgetxattr = v9fs_synth_lgetxattr, - .llistxattr = v9fs_synth_llistxattr, - .lsetxattr = v9fs_synth_lsetxattr, - .lremovexattr = v9fs_synth_lremovexattr, - .name_to_path = v9fs_synth_name_to_path, - .renameat = v9fs_synth_renameat, - .unlinkat = v9fs_synth_unlinkat, -}; 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