hw/9pfs: Abstract open state of fid to V9fsFidOpenState
To implement synthetic file system in Qemu we may not really require file descriptor and Dir *. Make generic code use V9fsFidOpenState instead. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
This commit is contained in:
Aneesh Kumar K.V
parent
2c74c2cb4b
commit
cc720ddb54
@ -78,6 +78,8 @@ typedef struct V9fsPath {
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char *data;
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} V9fsPath;
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typedef union V9fsFidOpenState V9fsFidOpenState;
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void cred_init(FsCred *);
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typedef struct FileOperations
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@ -94,22 +96,26 @@ typedef struct FileOperations
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const char *, FsCred *);
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int (*link)(FsContext *, V9fsPath *, V9fsPath *, const char *);
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int (*setuid)(FsContext *, uid_t);
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int (*close)(FsContext *, int);
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int (*closedir)(FsContext *, DIR *);
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DIR *(*opendir)(FsContext *, V9fsPath *);
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int (*open)(FsContext *, V9fsPath *, int);
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int (*open2)(FsContext *, V9fsPath *, const char *, int, FsCred *);
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void (*rewinddir)(FsContext *, DIR *);
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off_t (*telldir)(FsContext *, DIR *);
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int (*readdir_r)(FsContext *, DIR *, struct dirent *, struct dirent **);
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void (*seekdir)(FsContext *, DIR *, off_t);
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ssize_t (*preadv)(FsContext *, int, const struct iovec *, int, off_t);
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ssize_t (*pwritev)(FsContext *, int, const struct iovec *, int, off_t);
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int (*close)(FsContext *, V9fsFidOpenState *);
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int (*closedir)(FsContext *, V9fsFidOpenState *);
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int (*opendir)(FsContext *, V9fsPath *, V9fsFidOpenState *);
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int (*open)(FsContext *, V9fsPath *, int, V9fsFidOpenState *);
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int (*open2)(FsContext *, V9fsPath *, const char *,
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int, FsCred *, V9fsFidOpenState *);
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void (*rewinddir)(FsContext *, V9fsFidOpenState *);
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off_t (*telldir)(FsContext *, V9fsFidOpenState *);
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int (*readdir_r)(FsContext *, V9fsFidOpenState *,
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struct dirent *, struct dirent **);
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void (*seekdir)(FsContext *, V9fsFidOpenState *, off_t);
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ssize_t (*preadv)(FsContext *, V9fsFidOpenState *,
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const struct iovec *, int, off_t);
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ssize_t (*pwritev)(FsContext *, V9fsFidOpenState *,
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const struct iovec *, int, off_t);
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int (*mkdir)(FsContext *, V9fsPath *, const char *, FsCred *);
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int (*fstat)(FsContext *, int, struct stat *);
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int (*fstat)(FsContext *, V9fsFidOpenState *, struct stat *);
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int (*rename)(FsContext *, const char *, const char *);
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int (*truncate)(FsContext *, V9fsPath *, off_t);
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int (*fsync)(FsContext *, int, int);
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int (*fsync)(FsContext *, V9fsFidOpenState *, int);
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int (*statfs)(FsContext *s, V9fsPath *path, struct statfs *stbuf);
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ssize_t (*lgetxattr)(FsContext *, V9fsPath *,
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const char *, void *, size_t);
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@ -29,7 +29,7 @@ int v9fs_co_readdir_r(V9fsPDU *pdu, V9fsFidState *fidp, struct dirent *dent,
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v9fs_co_run_in_worker(
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{
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errno = 0;
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err = s->ops->readdir_r(&s->ctx, fidp->fs.dir, dent, result);
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err = s->ops->readdir_r(&s->ctx, &fidp->fs, dent, result);
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if (!*result && errno) {
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err = -errno;
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} else {
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@ -49,7 +49,7 @@ off_t v9fs_co_telldir(V9fsPDU *pdu, V9fsFidState *fidp)
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}
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v9fs_co_run_in_worker(
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{
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err = s->ops->telldir(&s->ctx, fidp->fs.dir);
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err = s->ops->telldir(&s->ctx, &fidp->fs);
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if (err < 0) {
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err = -errno;
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}
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@ -65,7 +65,7 @@ void v9fs_co_seekdir(V9fsPDU *pdu, V9fsFidState *fidp, off_t offset)
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}
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v9fs_co_run_in_worker(
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{
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s->ops->seekdir(&s->ctx, fidp->fs.dir, offset);
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s->ops->seekdir(&s->ctx, &fidp->fs, offset);
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});
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}
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@ -77,7 +77,7 @@ void v9fs_co_rewinddir(V9fsPDU *pdu, V9fsFidState *fidp)
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}
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v9fs_co_run_in_worker(
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{
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s->ops->rewinddir(&s->ctx, fidp->fs.dir);
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s->ops->rewinddir(&s->ctx, &fidp->fs);
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});
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}
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@ -129,8 +129,8 @@ int v9fs_co_opendir(V9fsPDU *pdu, V9fsFidState *fidp)
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v9fs_path_read_lock(s);
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v9fs_co_run_in_worker(
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{
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fidp->fs.dir = s->ops->opendir(&s->ctx, &fidp->path);
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if (!fidp->fs.dir) {
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err = s->ops->opendir(&s->ctx, &fidp->path, &fidp->fs);
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if (err < 0) {
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err = -errno;
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} else {
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err = 0;
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@ -146,7 +146,7 @@ int v9fs_co_opendir(V9fsPDU *pdu, V9fsFidState *fidp)
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return err;
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}
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int v9fs_co_closedir(V9fsPDU *pdu, DIR *dir)
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int v9fs_co_closedir(V9fsPDU *pdu, V9fsFidOpenState *fs)
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{
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int err;
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V9fsState *s = pdu->s;
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@ -156,7 +156,7 @@ int v9fs_co_closedir(V9fsPDU *pdu, DIR *dir)
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}
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v9fs_co_run_in_worker(
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{
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err = s->ops->closedir(&s->ctx, dir);
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err = s->ops->closedir(&s->ctx, fs);
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if (err < 0) {
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err = -errno;
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}
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@ -61,7 +61,7 @@ int v9fs_co_lstat(V9fsPDU *pdu, V9fsPath *path, struct stat *stbuf)
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return err;
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}
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int v9fs_co_fstat(V9fsPDU *pdu, int fd, struct stat *stbuf)
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int v9fs_co_fstat(V9fsPDU *pdu, V9fsFidState *fidp, struct stat *stbuf)
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{
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int err;
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V9fsState *s = pdu->s;
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@ -71,7 +71,7 @@ int v9fs_co_fstat(V9fsPDU *pdu, int fd, struct stat *stbuf)
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}
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v9fs_co_run_in_worker(
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{
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err = s->ops->fstat(&s->ctx, fd, stbuf);
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err = s->ops->fstat(&s->ctx, &fidp->fs, stbuf);
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if (err < 0) {
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err = -errno;
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}
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@ -90,8 +90,8 @@ int v9fs_co_open(V9fsPDU *pdu, V9fsFidState *fidp, int flags)
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v9fs_path_read_lock(s);
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v9fs_co_run_in_worker(
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{
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fidp->fs.fd = s->ops->open(&s->ctx, &fidp->path, flags);
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if (fidp->fs.fd == -1) {
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err = s->ops->open(&s->ctx, &fidp->path, flags, &fidp->fs);
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if (err == -1) {
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err = -errno;
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} else {
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err = 0;
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@ -130,9 +130,9 @@ int v9fs_co_open2(V9fsPDU *pdu, V9fsFidState *fidp, V9fsString *name, gid_t gid,
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v9fs_path_read_lock(s);
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v9fs_co_run_in_worker(
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{
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fidp->fs.fd = s->ops->open2(&s->ctx, &fidp->path,
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name->data, flags, &cred);
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if (fidp->fs.fd == -1) {
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err = s->ops->open2(&s->ctx, &fidp->path,
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name->data, flags, &cred, &fidp->fs);
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if (err < 0) {
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err = -errno;
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} else {
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v9fs_path_init(&path);
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@ -141,12 +141,12 @@ int v9fs_co_open2(V9fsPDU *pdu, V9fsFidState *fidp, V9fsString *name, gid_t gid,
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err = s->ops->lstat(&s->ctx, &path, stbuf);
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if (err < 0) {
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err = -errno;
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s->ops->close(&s->ctx, fidp->fs.fd);
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s->ops->close(&s->ctx, &fidp->fs);
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} else {
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v9fs_path_copy(&fidp->path, &path);
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}
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} else {
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s->ops->close(&s->ctx, fidp->fs.fd);
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s->ops->close(&s->ctx, &fidp->fs);
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}
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v9fs_path_free(&path);
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}
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@ -161,7 +161,7 @@ int v9fs_co_open2(V9fsPDU *pdu, V9fsFidState *fidp, V9fsString *name, gid_t gid,
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return err;
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}
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int v9fs_co_close(V9fsPDU *pdu, int fd)
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int v9fs_co_close(V9fsPDU *pdu, V9fsFidOpenState *fs)
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{
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int err;
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V9fsState *s = pdu->s;
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@ -171,7 +171,7 @@ int v9fs_co_close(V9fsPDU *pdu, int fd)
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}
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v9fs_co_run_in_worker(
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{
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err = s->ops->close(&s->ctx, fd);
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err = s->ops->close(&s->ctx, fs);
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if (err < 0) {
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err = -errno;
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}
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@ -184,16 +184,15 @@ int v9fs_co_close(V9fsPDU *pdu, int fd)
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int v9fs_co_fsync(V9fsPDU *pdu, V9fsFidState *fidp, int datasync)
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{
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int fd, err;
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int err;
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V9fsState *s = pdu->s;
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if (v9fs_request_cancelled(pdu)) {
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return -EINTR;
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}
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fd = fidp->fs.fd;
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v9fs_co_run_in_worker(
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{
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err = s->ops->fsync(&s->ctx, fd, datasync);
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err = s->ops->fsync(&s->ctx, &fidp->fs, datasync);
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if (err < 0) {
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err = -errno;
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}
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@ -226,16 +225,15 @@ int v9fs_co_link(V9fsPDU *pdu, V9fsFidState *oldfid,
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int v9fs_co_pwritev(V9fsPDU *pdu, V9fsFidState *fidp,
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struct iovec *iov, int iovcnt, int64_t offset)
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{
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int fd, err;
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int err;
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V9fsState *s = pdu->s;
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if (v9fs_request_cancelled(pdu)) {
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return -EINTR;
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}
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fd = fidp->fs.fd;
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v9fs_co_run_in_worker(
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{
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err = s->ops->pwritev(&s->ctx, fd, iov, iovcnt, offset);
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err = s->ops->pwritev(&s->ctx, &fidp->fs, iov, iovcnt, offset);
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if (err < 0) {
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err = -errno;
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}
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@ -246,16 +244,15 @@ int v9fs_co_pwritev(V9fsPDU *pdu, V9fsFidState *fidp,
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int v9fs_co_preadv(V9fsPDU *pdu, V9fsFidState *fidp,
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struct iovec *iov, int iovcnt, int64_t offset)
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{
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int fd, err;
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int err;
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V9fsState *s = pdu->s;
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if (v9fs_request_cancelled(pdu)) {
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return -EINTR;
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}
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fd = fidp->fs.fd;
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v9fs_co_run_in_worker(
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{
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err = s->ops->preadv(&s->ctx, fd, iov, iovcnt, offset);
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err = s->ops->preadv(&s->ctx, &fidp->fs, iov, iovcnt, offset);
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if (err < 0) {
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err = -errno;
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}
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@ -80,7 +80,7 @@ extern int v9fs_co_rename(V9fsPDU *, V9fsPath *, V9fsPath *);
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extern int v9fs_co_unlinkat(V9fsPDU *, V9fsPath *, V9fsString *, int flags);
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extern int v9fs_co_renameat(V9fsPDU *, V9fsPath *, V9fsString *,
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V9fsPath *, V9fsString *);
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extern int v9fs_co_fstat(V9fsPDU *, int, struct stat *);
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extern int v9fs_co_fstat(V9fsPDU *, V9fsFidState *, struct stat *);
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extern int v9fs_co_opendir(V9fsPDU *, V9fsFidState *);
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extern int v9fs_co_open(V9fsPDU *, V9fsFidState *, int);
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extern int v9fs_co_open2(V9fsPDU *, V9fsFidState *, V9fsString *,
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@ -88,8 +88,8 @@ extern int v9fs_co_open2(V9fsPDU *, V9fsFidState *, V9fsString *,
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extern int v9fs_co_lsetxattr(V9fsPDU *, V9fsPath *, V9fsString *,
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void *, size_t, int);
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extern int v9fs_co_lremovexattr(V9fsPDU *, V9fsPath *, V9fsString *);
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extern int v9fs_co_closedir(V9fsPDU *, DIR *);
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extern int v9fs_co_close(V9fsPDU *, int);
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extern int v9fs_co_closedir(V9fsPDU *, V9fsFidOpenState *);
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extern int v9fs_co_close(V9fsPDU *, V9fsFidOpenState *);
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extern int v9fs_co_fsync(V9fsPDU *, V9fsFidState *, int);
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extern int v9fs_co_symlink(V9fsPDU *, V9fsFidState *, V9fsString *,
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const char *, gid_t, struct stat *);
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@ -133,81 +133,91 @@ static ssize_t handle_readlink(FsContext *fs_ctx, V9fsPath *fs_path,
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return ret;
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}
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static int handle_close(FsContext *ctx, int fd)
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static int handle_close(FsContext *ctx, V9fsFidOpenState *fs)
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{
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return close(fd);
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return close(fs->fd);
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}
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static int handle_closedir(FsContext *ctx, DIR *dir)
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static int handle_closedir(FsContext *ctx, V9fsFidOpenState *fs)
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{
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return closedir(dir);
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return closedir(fs->dir);
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}
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static int handle_open(FsContext *ctx, V9fsPath *fs_path, int flags)
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static int handle_open(FsContext *ctx, V9fsPath *fs_path,
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int flags, V9fsFidOpenState *fs)
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{
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struct handle_data *data = (struct handle_data *)ctx->private;
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return open_by_handle(data->mountfd, fs_path->data, flags);
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fs->fd = open_by_handle(data->mountfd, fs_path->data, flags);
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return fs->fd;
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}
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static DIR *handle_opendir(FsContext *ctx, V9fsPath *fs_path)
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static int handle_opendir(FsContext *ctx,
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V9fsPath *fs_path, V9fsFidOpenState *fs)
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{
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int fd;
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fd = handle_open(ctx, fs_path, O_DIRECTORY);
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if (fd < 0) {
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return NULL;
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int ret;
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ret = handle_open(ctx, fs_path, O_DIRECTORY, fs);
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if (ret < 0) {
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return -1;
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}
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return fdopendir(fd);
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fs->dir = fdopendir(ret);
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if (!fs->dir) {
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return -1;
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}
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return 0;
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}
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static void handle_rewinddir(FsContext *ctx, DIR *dir)
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static void handle_rewinddir(FsContext *ctx, V9fsFidOpenState *fs)
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{
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return rewinddir(dir);
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return rewinddir(fs->dir);
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}
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static off_t handle_telldir(FsContext *ctx, DIR *dir)
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static off_t handle_telldir(FsContext *ctx, V9fsFidOpenState *fs)
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{
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return telldir(dir);
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return telldir(fs->dir);
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}
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static int handle_readdir_r(FsContext *ctx, DIR *dir, struct dirent *entry,
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static int handle_readdir_r(FsContext *ctx, V9fsFidOpenState *fs,
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struct dirent *entry,
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struct dirent **result)
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{
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return readdir_r(dir, entry, result);
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return readdir_r(fs->dir, entry, result);
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}
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static void handle_seekdir(FsContext *ctx, DIR *dir, off_t off)
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static void handle_seekdir(FsContext *ctx, V9fsFidOpenState *fs, off_t off)
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{
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return seekdir(dir, off);
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return seekdir(fs->dir, off);
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}
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static ssize_t handle_preadv(FsContext *ctx, int fd, const struct iovec *iov,
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static ssize_t handle_preadv(FsContext *ctx, V9fsFidOpenState *fs,
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const struct iovec *iov,
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int iovcnt, off_t offset)
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{
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#ifdef CONFIG_PREADV
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return preadv(fd, iov, iovcnt, offset);
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return preadv(fs->fd, iov, iovcnt, offset);
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#else
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int err = lseek(fd, offset, SEEK_SET);
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int err = lseek(fs->fd, offset, SEEK_SET);
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if (err == -1) {
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return err;
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} else {
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return readv(fd, iov, iovcnt);
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return readv(fs->fd, iov, iovcnt);
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}
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#endif
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}
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static ssize_t handle_pwritev(FsContext *ctx, int fd, const struct iovec *iov,
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static ssize_t handle_pwritev(FsContext *ctx, V9fsFidOpenState *fs,
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const struct iovec *iov,
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int iovcnt, off_t offset)
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{
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ssize_t ret;
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#ifdef CONFIG_PREADV
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ret = pwritev(fd, iov, iovcnt, offset);
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ret = pwritev(fs->fd, iov, iovcnt, offset);
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#else
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int err = lseek(fd, offset, SEEK_SET);
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int err = lseek(fs->fd, offset, SEEK_SET);
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if (err == -1) {
|
||||
return err;
|
||||
} else {
|
||||
ret = writev(fd, iov, iovcnt);
|
||||
ret = writev(fs->fd, iov, iovcnt);
|
||||
}
|
||||
#endif
|
||||
#ifdef CONFIG_SYNC_FILE_RANGE
|
||||
@ -217,7 +227,7 @@ static ssize_t handle_pwritev(FsContext *ctx, int fd, const struct iovec *iov,
|
||||
* We want to ensure that we don't leave dirty pages in the cache
|
||||
* after write when writeout=immediate is sepcified.
|
||||
*/
|
||||
sync_file_range(fd, offset, ret,
|
||||
sync_file_range(fs->fd, offset, ret,
|
||||
SYNC_FILE_RANGE_WAIT_BEFORE | SYNC_FILE_RANGE_WRITE);
|
||||
}
|
||||
#endif
|
||||
@ -274,13 +284,14 @@ static int handle_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int handle_fstat(FsContext *fs_ctx, int fd, struct stat *stbuf)
|
||||
static int handle_fstat(FsContext *fs_ctx, V9fsFidOpenState *fs,
|
||||
struct stat *stbuf)
|
||||
{
|
||||
return fstat(fd, stbuf);
|
||||
return fstat(fs->fd, stbuf);
|
||||
}
|
||||
|
||||
static int handle_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
|
||||
int flags, FsCred *credp)
|
||||
int flags, FsCred *credp, V9fsFidOpenState *fs)
|
||||
{
|
||||
int ret;
|
||||
int dirfd, fd;
|
||||
@ -296,6 +307,8 @@ static int handle_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
|
||||
if (ret < 0) {
|
||||
close(fd);
|
||||
fd = ret;
|
||||
} else {
|
||||
fs->fd = fd;
|
||||
}
|
||||
}
|
||||
close(dirfd);
|
||||
@ -411,12 +424,12 @@ static int handle_remove(FsContext *ctx, const char *path)
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int handle_fsync(FsContext *ctx, int fd, int datasync)
|
||||
static int handle_fsync(FsContext *ctx, V9fsFidOpenState *fs, int datasync)
|
||||
{
|
||||
if (datasync) {
|
||||
return qemu_fdatasync(fd);
|
||||
return qemu_fdatasync(fs->fd);
|
||||
} else {
|
||||
return fsync(fd);
|
||||
return fsync(fs->fd);
|
||||
}
|
||||
}
|
||||
|
||||
@ -575,7 +588,8 @@ static int handle_unlinkat(FsContext *ctx, V9fsPath *dir,
|
||||
static int handle_ioc_getversion(FsContext *ctx, V9fsPath *path,
|
||||
mode_t st_mode, uint64_t *st_gen)
|
||||
{
|
||||
int err, fd;
|
||||
int err;
|
||||
V9fsFidOpenState fid_open;
|
||||
|
||||
/*
|
||||
* Do not try to open special files like device nodes, fifos etc
|
||||
@ -584,12 +598,12 @@ static int handle_ioc_getversion(FsContext *ctx, V9fsPath *path,
|
||||
if (!S_ISREG(st_mode) && !S_ISDIR(st_mode)) {
|
||||
return 0;
|
||||
}
|
||||
fd = handle_open(ctx, path, O_RDONLY);
|
||||
if (fd < 0) {
|
||||
return fd;
|
||||
err = handle_open(ctx, path, O_RDONLY, &fid_open);
|
||||
if (err < 0) {
|
||||
return err;
|
||||
}
|
||||
err = ioctl(fd, FS_IOC_GETVERSION, st_gen);
|
||||
handle_close(ctx, fd);
|
||||
err = ioctl(fid_open.fd, FS_IOC_GETVERSION, st_gen);
|
||||
handle_close(ctx, &fid_open);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
@ -156,81 +156,91 @@ static ssize_t local_readlink(FsContext *fs_ctx, V9fsPath *fs_path,
|
||||
return tsize;
|
||||
}
|
||||
|
||||
static int local_close(FsContext *ctx, int fd)
|
||||
static int local_close(FsContext *ctx, V9fsFidOpenState *fs)
|
||||
{
|
||||
return close(fd);
|
||||
return close(fs->fd);
|
||||
}
|
||||
|
||||
static int local_closedir(FsContext *ctx, DIR *dir)
|
||||
static int local_closedir(FsContext *ctx, V9fsFidOpenState *fs)
|
||||
{
|
||||
return closedir(dir);
|
||||
return closedir(fs->dir);
|
||||
}
|
||||
|
||||
static int local_open(FsContext *ctx, V9fsPath *fs_path, int flags)
|
||||
static int local_open(FsContext *ctx, V9fsPath *fs_path,
|
||||
int flags, V9fsFidOpenState *fs)
|
||||
{
|
||||
char buffer[PATH_MAX];
|
||||
char *path = fs_path->data;
|
||||
|
||||
return open(rpath(ctx, path, buffer), flags);
|
||||
fs->fd = open(rpath(ctx, path, buffer), flags);
|
||||
return fs->fd;
|
||||
}
|
||||
|
||||
static DIR *local_opendir(FsContext *ctx, V9fsPath *fs_path)
|
||||
static int local_opendir(FsContext *ctx,
|
||||
V9fsPath *fs_path, V9fsFidOpenState *fs)
|
||||
{
|
||||
char buffer[PATH_MAX];
|
||||
char *path = fs_path->data;
|
||||
|
||||
return opendir(rpath(ctx, path, buffer));
|
||||
fs->dir = opendir(rpath(ctx, path, buffer));
|
||||
if (!fs->dir) {
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void local_rewinddir(FsContext *ctx, DIR *dir)
|
||||
static void local_rewinddir(FsContext *ctx, V9fsFidOpenState *fs)
|
||||
{
|
||||
return rewinddir(dir);
|
||||
return rewinddir(fs->dir);
|
||||
}
|
||||
|
||||
static off_t local_telldir(FsContext *ctx, DIR *dir)
|
||||
static off_t local_telldir(FsContext *ctx, V9fsFidOpenState *fs)
|
||||
{
|
||||
return telldir(dir);
|
||||
return telldir(fs->dir);
|
||||
}
|
||||
|
||||
static int local_readdir_r(FsContext *ctx, DIR *dir, struct dirent *entry,
|
||||
static int local_readdir_r(FsContext *ctx, V9fsFidOpenState *fs,
|
||||
struct dirent *entry,
|
||||
struct dirent **result)
|
||||
{
|
||||
return readdir_r(dir, entry, result);
|
||||
return readdir_r(fs->dir, entry, result);
|
||||
}
|
||||
|
||||
static void local_seekdir(FsContext *ctx, DIR *dir, off_t off)
|
||||
static void local_seekdir(FsContext *ctx, V9fsFidOpenState *fs, off_t off)
|
||||
{
|
||||
return seekdir(dir, off);
|
||||
return seekdir(fs->dir, off);
|
||||
}
|
||||
|
||||
static ssize_t local_preadv(FsContext *ctx, int fd, const struct iovec *iov,
|
||||
static ssize_t local_preadv(FsContext *ctx, V9fsFidOpenState *fs,
|
||||
const struct iovec *iov,
|
||||
int iovcnt, off_t offset)
|
||||
{
|
||||
#ifdef CONFIG_PREADV
|
||||
return preadv(fd, iov, iovcnt, offset);
|
||||
return preadv(fs->fd, iov, iovcnt, offset);
|
||||
#else
|
||||
int err = lseek(fd, offset, SEEK_SET);
|
||||
int err = lseek(fs->fd, offset, SEEK_SET);
|
||||
if (err == -1) {
|
||||
return err;
|
||||
} else {
|
||||
return readv(fd, iov, iovcnt);
|
||||
return readv(fs->fd, iov, iovcnt);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
static ssize_t local_pwritev(FsContext *ctx, int fd, const struct iovec *iov,
|
||||
static ssize_t local_pwritev(FsContext *ctx, V9fsFidOpenState *fs,
|
||||
const struct iovec *iov,
|
||||
int iovcnt, off_t offset)
|
||||
{
|
||||
ssize_t ret
|
||||
;
|
||||
#ifdef CONFIG_PREADV
|
||||
ret = pwritev(fd, iov, iovcnt, offset);
|
||||
ret = pwritev(fs->fd, iov, iovcnt, offset);
|
||||
#else
|
||||
int err = lseek(fd, offset, SEEK_SET);
|
||||
int err = lseek(fs->fd, offset, SEEK_SET);
|
||||
if (err == -1) {
|
||||
return err;
|
||||
} else {
|
||||
ret = writev(fd, iov, iovcnt);
|
||||
ret = writev(fs->fd, iov, iovcnt);
|
||||
}
|
||||
#endif
|
||||
#ifdef CONFIG_SYNC_FILE_RANGE
|
||||
@ -240,7 +250,7 @@ static ssize_t local_pwritev(FsContext *ctx, int fd, const struct iovec *iov,
|
||||
* We want to ensure that we don't leave dirty pages in the cache
|
||||
* after write when writeout=immediate is sepcified.
|
||||
*/
|
||||
sync_file_range(fd, offset, ret,
|
||||
sync_file_range(fs->fd, offset, ret,
|
||||
SYNC_FILE_RANGE_WAIT_BEFORE | SYNC_FILE_RANGE_WRITE);
|
||||
}
|
||||
#endif
|
||||
@ -356,10 +366,11 @@ out:
|
||||
return err;
|
||||
}
|
||||
|
||||
static int local_fstat(FsContext *fs_ctx, int fd, struct stat *stbuf)
|
||||
static int local_fstat(FsContext *fs_ctx,
|
||||
V9fsFidOpenState *fs, struct stat *stbuf)
|
||||
{
|
||||
int err;
|
||||
err = fstat(fd, stbuf);
|
||||
err = fstat(fs->fd, stbuf);
|
||||
if (err) {
|
||||
return err;
|
||||
}
|
||||
@ -370,16 +381,20 @@ static int local_fstat(FsContext *fs_ctx, int fd, struct stat *stbuf)
|
||||
mode_t tmp_mode;
|
||||
dev_t tmp_dev;
|
||||
|
||||
if (fgetxattr(fd, "user.virtfs.uid", &tmp_uid, sizeof(uid_t)) > 0) {
|
||||
if (fgetxattr(fs->fd, "user.virtfs.uid",
|
||||
&tmp_uid, sizeof(uid_t)) > 0) {
|
||||
stbuf->st_uid = tmp_uid;
|
||||
}
|
||||
if (fgetxattr(fd, "user.virtfs.gid", &tmp_gid, sizeof(gid_t)) > 0) {
|
||||
if (fgetxattr(fs->fd, "user.virtfs.gid",
|
||||
&tmp_gid, sizeof(gid_t)) > 0) {
|
||||
stbuf->st_gid = tmp_gid;
|
||||
}
|
||||
if (fgetxattr(fd, "user.virtfs.mode", &tmp_mode, sizeof(mode_t)) > 0) {
|
||||
if (fgetxattr(fs->fd, "user.virtfs.mode",
|
||||
&tmp_mode, sizeof(mode_t)) > 0) {
|
||||
stbuf->st_mode = tmp_mode;
|
||||
}
|
||||
if (fgetxattr(fd, "user.virtfs.rdev", &tmp_dev, sizeof(dev_t)) > 0) {
|
||||
if (fgetxattr(fs->fd, "user.virtfs.rdev",
|
||||
&tmp_dev, sizeof(dev_t)) > 0) {
|
||||
stbuf->st_rdev = tmp_dev;
|
||||
}
|
||||
}
|
||||
@ -387,7 +402,7 @@ static int local_fstat(FsContext *fs_ctx, int fd, struct stat *stbuf)
|
||||
}
|
||||
|
||||
static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
|
||||
int flags, FsCred *credp)
|
||||
int flags, FsCred *credp, V9fsFidOpenState *fs)
|
||||
{
|
||||
char *path;
|
||||
int fd = -1;
|
||||
@ -428,6 +443,7 @@ static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
|
||||
}
|
||||
}
|
||||
err = fd;
|
||||
fs->fd = fd;
|
||||
goto out;
|
||||
|
||||
err_end:
|
||||
@ -577,12 +593,12 @@ static int local_remove(FsContext *ctx, const char *path)
|
||||
return remove(rpath(ctx, path, buffer));
|
||||
}
|
||||
|
||||
static int local_fsync(FsContext *ctx, int fd, int datasync)
|
||||
static int local_fsync(FsContext *ctx, V9fsFidOpenState *fs, int datasync)
|
||||
{
|
||||
if (datasync) {
|
||||
return qemu_fdatasync(fd);
|
||||
return qemu_fdatasync(fs->fd);
|
||||
} else {
|
||||
return fsync(fd);
|
||||
return fsync(fs->fd);
|
||||
}
|
||||
}
|
||||
|
||||
@ -677,7 +693,9 @@ static int local_unlinkat(FsContext *ctx, V9fsPath *dir,
|
||||
static int local_ioc_getversion(FsContext *ctx, V9fsPath *path,
|
||||
mode_t st_mode, uint64_t *st_gen)
|
||||
{
|
||||
int err, fd;
|
||||
int err;
|
||||
V9fsFidOpenState fid_open;
|
||||
|
||||
/*
|
||||
* Do not try to open special files like device nodes, fifos etc
|
||||
* We can get fd for regular files and directories only
|
||||
@ -685,12 +703,12 @@ static int local_ioc_getversion(FsContext *ctx, V9fsPath *path,
|
||||
if (!S_ISREG(st_mode) && !S_ISDIR(st_mode)) {
|
||||
return 0;
|
||||
}
|
||||
fd = local_open(ctx, path, O_RDONLY);
|
||||
if (fd < 0) {
|
||||
return fd;
|
||||
err = local_open(ctx, path, O_RDONLY, &fid_open);
|
||||
if (err < 0) {
|
||||
return err;
|
||||
}
|
||||
err = ioctl(fd, FS_IOC_GETVERSION, st_gen);
|
||||
local_close(ctx, fd);
|
||||
err = ioctl(fid_open.fd, FS_IOC_GETVERSION, st_gen);
|
||||
local_close(ctx, &fid_open);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
@ -455,11 +455,11 @@ static int free_fid(V9fsPDU *pdu, V9fsFidState *fidp)
|
||||
if (fidp->fid_type == P9_FID_FILE) {
|
||||
/* If we reclaimed the fd no need to close */
|
||||
if (fidp->fs.fd != -1) {
|
||||
retval = v9fs_co_close(pdu, fidp->fs.fd);
|
||||
retval = v9fs_co_close(pdu, &fidp->fs);
|
||||
}
|
||||
} else if (fidp->fid_type == P9_FID_DIR) {
|
||||
if (fidp->fs.dir != NULL) {
|
||||
retval = v9fs_co_closedir(pdu, fidp->fs.dir);
|
||||
retval = v9fs_co_closedir(pdu, &fidp->fs);
|
||||
}
|
||||
} else if (fidp->fid_type == P9_FID_XATTR) {
|
||||
retval = v9fs_xattr_fid_clunk(pdu, fidp);
|
||||
@ -567,9 +567,9 @@ void v9fs_reclaim_fd(V9fsPDU *pdu)
|
||||
f = reclaim_list;
|
||||
reclaim_list = f->rclm_lst;
|
||||
if (f->fid_type == P9_FID_FILE) {
|
||||
v9fs_co_close(pdu, f->fs_reclaim.fd);
|
||||
v9fs_co_close(pdu, &f->fs_reclaim);
|
||||
} else if (f->fid_type == P9_FID_DIR) {
|
||||
v9fs_co_closedir(pdu, f->fs_reclaim.dir);
|
||||
v9fs_co_closedir(pdu, &f->fs_reclaim);
|
||||
}
|
||||
f->rclm_lst = NULL;
|
||||
/*
|
||||
@ -3009,7 +3009,7 @@ static void v9fs_lock(void *opaque)
|
||||
err = -ENOENT;
|
||||
goto out_nofid;
|
||||
}
|
||||
err = v9fs_co_fstat(pdu, fidp->fs.fd, &stbuf);
|
||||
err = v9fs_co_fstat(pdu, fidp, &stbuf);
|
||||
if (err < 0) {
|
||||
goto out;
|
||||
}
|
||||
@ -3052,7 +3052,7 @@ static void v9fs_getlock(void *opaque)
|
||||
err = -ENOENT;
|
||||
goto out_nofid;
|
||||
}
|
||||
err = v9fs_co_fstat(pdu, fidp->fs.fd, &stbuf);
|
||||
err = v9fs_co_fstat(pdu, fidp, &stbuf);
|
||||
if (err < 0) {
|
||||
goto out;
|
||||
}
|
||||
|
||||
@ -204,20 +204,23 @@ typedef struct V9fsXattr
|
||||
int flags;
|
||||
} V9fsXattr;
|
||||
|
||||
/*
|
||||
* Filled by fs driver on open and other
|
||||
* calls.
|
||||
*/
|
||||
union V9fsFidOpenState {
|
||||
int fd;
|
||||
DIR *dir;
|
||||
V9fsXattr xattr;
|
||||
};
|
||||
|
||||
struct V9fsFidState
|
||||
{
|
||||
int fid_type;
|
||||
int32_t fid;
|
||||
V9fsPath path;
|
||||
union {
|
||||
int fd;
|
||||
DIR *dir;
|
||||
V9fsXattr xattr;
|
||||
} fs;
|
||||
union {
|
||||
int fd;
|
||||
DIR *dir;
|
||||
} fs_reclaim;
|
||||
V9fsFidOpenState fs;
|
||||
V9fsFidOpenState fs_reclaim;
|
||||
int flags;
|
||||
int open_flags;
|
||||
uid_t uid;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user