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author | Anthony Liguori <aliguori@us.ibm.com> | 2011-09-15 13:28:28 -0500 |
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committer | Anthony Liguori <aliguori@us.ibm.com> | 2011-09-15 13:28:28 -0500 |
commit | c7fbbdf9c870a98b42a7f4dfae20e702a70f9b21 (patch) | |
tree | 684aabf014897ec5bbad00e6bf7b23d593b22e5c /hw | |
parent | ee18e730234792b33e01d47939f4c30f29c9744e (diff) | |
parent | 7834cf77be7e3e301177c6ab98a3d7f1bf73f28f (diff) | |
download | hqemu-c7fbbdf9c870a98b42a7f4dfae20e702a70f9b21.zip hqemu-c7fbbdf9c870a98b42a7f4dfae20e702a70f9b21.tar.gz |
Merge remote-tracking branch 'aneesh/for-upstream-4' into staging
Diffstat (limited to 'hw')
-rw-r--r-- | hw/9pfs/virtio-9p.c | 126 | ||||
-rw-r--r-- | hw/9pfs/virtio-9p.h | 4 |
2 files changed, 130 insertions, 0 deletions
diff --git a/hw/9pfs/virtio-9p.c b/hw/9pfs/virtio-9p.c index 94b7090..d28edb7 100644 --- a/hw/9pfs/virtio-9p.c +++ b/hw/9pfs/virtio-9p.c @@ -543,6 +543,7 @@ static void stat_to_qid(const struct stat *stbuf, V9fsQID *qidp) { size_t size; + memset(&qidp->path, 0, sizeof(qidp->path)); size = MIN(sizeof(stbuf->st_ino), sizeof(qidp->path)); memcpy(&qidp->path, &stbuf->st_ino, size); qidp->version = stbuf->st_mtime ^ (stbuf->st_size << 8); @@ -2106,6 +2107,7 @@ static void v9fs_create(void *opaque) if (err < 0) { goto out; } + v9fs_string_copy(&fidp->path, &fullname); err = v9fs_co_opendir(pdu->s, fidp); if (err < 0) { goto out; @@ -2336,6 +2338,45 @@ out_nofid: complete_pdu(pdu->s, pdu, err); } +static void v9fs_unlinkat(void *opaque) +{ + int err = 0; + V9fsString name; + int32_t dfid, flags; + size_t offset = 7; + V9fsFidState *dfidp; + V9fsPDU *pdu = opaque; + V9fsString full_name; + + pdu_unmarshal(pdu, offset, "dsd", &dfid, &name, &flags); + + dfidp = get_fid(pdu->s, dfid); + if (dfidp == NULL) { + err = -EINVAL; + goto out_nofid; + } + v9fs_string_init(&full_name); + v9fs_string_sprintf(&full_name, "%s/%s", dfidp->path.data, name.data); + /* + * IF the file is unlinked, we cannot reopen + * the file later. So don't reclaim fd + */ + err = v9fs_mark_fids_unreclaim(pdu->s, &full_name); + if (err < 0) { + goto out_err; + } + err = v9fs_co_remove(pdu->s, &full_name); + if (!err) { + err = offset; + } +out_err: + put_fid(pdu->s, dfidp); + v9fs_string_free(&full_name); +out_nofid: + complete_pdu(pdu->s, pdu, err); + v9fs_string_free(&name); +} + static int v9fs_complete_rename(V9fsState *s, V9fsFidState *fidp, int32_t newdirfid, V9fsString *name) { @@ -2438,6 +2479,87 @@ out_nofid: v9fs_string_free(&name); } +static int v9fs_complete_renameat(V9fsState *s, int32_t olddirfid, + V9fsString *old_name, int32_t newdirfid, + V9fsString *new_name) +{ + int err = 0; + V9fsString old_full_name, new_full_name; + V9fsFidState *newdirfidp = NULL, *olddirfidp = NULL; + + olddirfidp = get_fid(s, olddirfid); + if (olddirfidp == NULL) { + err = -ENOENT; + goto out; + } + v9fs_string_init(&old_full_name); + v9fs_string_init(&new_full_name); + + v9fs_string_sprintf(&old_full_name, "%s/%s", + olddirfidp->path.data, old_name->data); + if (newdirfid != -1) { + newdirfidp = get_fid(s, newdirfid); + if (newdirfidp == NULL) { + err = -ENOENT; + goto out; + } + v9fs_string_sprintf(&new_full_name, "%s/%s", + newdirfidp->path.data, new_name->data); + } else { + v9fs_string_sprintf(&new_full_name, "%s/%s", + olddirfidp->path.data, new_name->data); + } + + if (strcmp(old_full_name.data, new_full_name.data) != 0) { + V9fsFidState *tfidp; + err = v9fs_co_rename(s, &old_full_name, &new_full_name); + if (err < 0) { + goto out; + } + /* + * Fixup fid's pointing to the old name to + * start pointing to the new name + */ + for (tfidp = s->fid_list; tfidp; tfidp = tfidp->next) { + if (v9fs_path_is_ancestor(&old_full_name, &tfidp->path)) { + /* replace the name */ + v9fs_fix_path(&tfidp->path, &new_full_name, old_full_name.size); + } + } + } +out: + if (olddirfidp) { + put_fid(s, olddirfidp); + } + if (newdirfidp) { + put_fid(s, newdirfidp); + } + v9fs_string_free(&old_full_name); + v9fs_string_free(&new_full_name); + return err; +} + +static void v9fs_renameat(void *opaque) +{ + ssize_t err = 0; + size_t offset = 7; + V9fsPDU *pdu = opaque; + V9fsState *s = pdu->s; + int32_t olddirfid, newdirfid; + V9fsString old_name, new_name; + + pdu_unmarshal(pdu, offset, "dsds", &olddirfid, + &old_name, &newdirfid, &new_name); + + err = v9fs_complete_renameat(s, olddirfid, &old_name, newdirfid, &new_name); + if (!err) { + err = offset; + } + complete_pdu(s, pdu, err); + v9fs_string_free(&old_name); + v9fs_string_free(&new_name); +} + static void v9fs_wstat(void *opaque) { int32_t fid; @@ -2694,6 +2816,7 @@ out_nofid: err = offset; err += pdu_marshal(pdu, offset, "b", status); complete_pdu(s, pdu, err); + v9fs_string_free(&flock->client_id); g_free(flock); } @@ -2734,6 +2857,7 @@ out: put_fid(s, fidp); out_nofid: complete_pdu(s, pdu, err); + v9fs_string_free(&glock->client_id); g_free(glock); } @@ -2953,7 +3077,9 @@ static CoroutineEntry *pdu_co_handlers[] = { [P9_TRENAME] = v9fs_rename, [P9_TLOCK] = v9fs_lock, [P9_TGETLOCK] = v9fs_getlock, + [P9_TRENAMEAT] = v9fs_renameat, [P9_TREADLINK] = v9fs_readlink, + [P9_TUNLINKAT] = v9fs_unlinkat, [P9_TMKDIR] = v9fs_mkdir, [P9_TVERSION] = v9fs_version, [P9_TLOPEN] = v9fs_open, diff --git a/hw/9pfs/virtio-9p.h b/hw/9pfs/virtio-9p.h index 9d1b508..17d44b4 100644 --- a/hw/9pfs/virtio-9p.h +++ b/hw/9pfs/virtio-9p.h @@ -50,6 +50,10 @@ enum { P9_RLINK, P9_TMKDIR = 72, P9_RMKDIR, + P9_TRENAMEAT = 74, + P9_RRENAMEAT, + P9_TUNLINKAT = 76, + P9_RUNLINKAT, P9_TVERSION = 100, P9_RVERSION, P9_TAUTH = 102, |