X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fnfs%2Flibnfs.h;fp=ccan%2Fnfs%2Flibnfs.h;h=ec4b6053c1ab97557a49c51759d158014ce73a6b;hp=0000000000000000000000000000000000000000;hb=f91748e6a99dfd3b6565aed4e98e84b4365eb9c2;hpb=b581c2380721e6bd2079a80adcb28b0ed0f3552c

diff --git a/ccan/nfs/libnfs.h b/ccan/nfs/libnfs.h
new file mode 100644
index 00000000..ec4b6053
--- /dev/null
+++ b/ccan/nfs/libnfs.h
@@ -0,0 +1,910 @@
+/* 
+   Copyright (C) by Ronnie Sahlberg <ronniesahlberg@gmail.com> 2010
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, see <http://www.gnu.org/licenses/>.
+*/
+/*
+ * This is the highlevel interface to access NFS resources using a posix-like interface
+ */
+#include <stdint.h>
+
+struct nfs_context;
+
+/*
+ * Used for interfacing the async version of the api into an external eventsystem
+ */
+int nfs_get_fd(struct nfs_context *nfs);
+int nfs_which_events(struct nfs_context *nfs);
+int nfs_service(struct nfs_context *nfs, int revents);
+
+/*
+ * Used if you need different credentials than the default for the current user.
+ */
+struct AUTH;
+void nfs_set_auth(struct nfs_context *nfs, struct AUTH *auth);
+
+
+/*
+ * When an operation failed, this function can extract a detailed error string.
+ */
+char *nfs_get_error(struct nfs_context *nfs);
+
+
+/*
+ * Callback for all async nfs functions
+ */
+typedef void (*nfs_cb)(int err, struct nfs_context *nfs, void *data, void *private_data);
+
+
+
+
+/*
+ * NFS CONTEXT.
+ */
+/*
+ * Create an NFS context.
+ * Function returns
+ *  NULL                 : Failed to create a context.
+ *  struct nfs_context * : A pointer to an nfs context.
+ */
+struct nfs_context *nfs_init_context(void);
+/*
+ * Destroy an nfs context.
+ */
+void nfs_destroy_context(struct nfs_context *nfs);
+
+
+/*
+ * A libnfs filehandle
+ */
+struct nfsfh;
+
+
+
+/*
+ * MOUNT THE EXPORT
+ */
+/*
+ * Async nfs mount.
+ * This function will try to connect to the server and mount the export.
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_mount_async(struct nfs_context *nfs, const char *server, const char *export, nfs_cb cb, void *private_data);
+/*
+ * Sync nfs mount.
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_mount_sync(struct nfs_context *nfs, const char *server, const char *export);
+
+
+
+
+/*
+ * STAT()
+ */
+/*
+ * Async stat(<filename>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is struct stat *
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+struct stat;
+int nfs_stat_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
+/*
+ * Sync stat(<filename>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_stat_sync(struct nfs_context *nfs, const char *path, struct stat *st);
+
+
+/*
+ * FSTAT()
+ */
+/*
+ * Async fstat(nfsfh *)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is struct stat *
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_fstat_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data);
+/*
+ * Sync fstat(nfsfh *)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_fstat_sync(struct nfs_context *nfs, struct nfsfh *nfsfh, struct stat *st);
+
+
+
+/*
+ * OPEN()
+ */
+/*
+ * Async open(<filename>)
+ *
+ * mode is a combination of the flags : O_RDOLNY, O_WRONLY, O_RDWR , O_SYNC
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is a struct *nfsfh;
+ *          The nfsfh is close using nfs_close().
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_open_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data);
+/*
+ * Sync open(<filename>)
+ * Function returns
+ *      0 : The operation was successfull. *nfsfh is filled in.
+ * -errno : The command failed.
+ */
+int nfs_open_sync(struct nfs_context *nfs, const char *path, int mode, struct nfsfh **nfsfh);
+
+
+
+
+/*
+ * CLOSE
+ */
+/*
+ * Async close(nfsfh)
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_close_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data);
+/*
+ * Sync close(nfsfh)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_close_sync(struct nfs_context *nfs, struct nfsfh *nfsfh);
+
+
+/*
+ * PREAD()
+ */
+/*
+ * Async pread()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *    >=0 : Success.
+ *          status is numer of bytes read.
+ *          data is a pointer to the returned data.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_pread_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, nfs_cb cb, void *private_data);
+/*
+ * Sync pread()
+ * Function returns
+ *    >=0 : numer of bytes read.
+ * -errno : An error occured.
+ */
+int nfs_pread_sync(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, char *buf);
+
+
+
+/*
+ * READ()
+ */
+/*
+ * Async read()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *    >=0 : Success.
+ *          status is numer of bytes read.
+ *          data is a pointer to the returned data.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_read_async(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count, nfs_cb cb, void *private_data);
+/*
+ * Sync read()
+ * Function returns
+ *    >=0 : numer of bytes read.
+ * -errno : An error occured.
+ */
+int nfs_read_sync(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count, char *buf);
+
+
+
+
+/*
+ * PWRITE()
+ */
+/*
+ * Async pwrite()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *    >=0 : Success.
+ *          status is numer of bytes written.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_pwrite_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, char *buf, nfs_cb cb, void *private_data);
+/*
+ * Sync pwrite()
+ * Function returns
+ *    >=0 : numer of bytes written.
+ * -errno : An error occured.
+ */
+int nfs_pwrite_sync(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, size_t count, char *buf);
+
+
+/*
+ * WRITE()
+ */
+/*
+ * Async write()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *    >=0 : Success.
+ *          status is numer of bytes written.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_write_async(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count, char *buf, nfs_cb cb, void *private_data);
+/*
+ * Sync write()
+ * Function returns
+ *    >=0 : numer of bytes written.
+ * -errno : An error occured.
+ */
+int nfs_write_sync(struct nfs_context *nfs, struct nfsfh *nfsfh, size_t count, char *buf);
+
+
+/*
+ * LSEEK()
+ */
+/*
+ * Async lseek()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *    >=0 : Success.
+ *          data is off_t * for the current position.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_lseek_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, int whence, nfs_cb cb, void *private_data);
+/*
+ * Sync lseek()
+ * Function returns
+ *    >=0 : numer of bytes read.
+ * -errno : An error occured.
+ */
+int nfs_lseek_sync(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t offset, int whence, off_t *current_offset);
+
+
+/*
+ * FSYNC()
+ */
+/*
+ * Async fsync()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_fsync_async(struct nfs_context *nfs, struct nfsfh *nfsfh, nfs_cb cb, void *private_data);
+/*
+ * Sync fsync()
+ * Function returns
+ *      0 : Success
+ * -errno : An error occured.
+ */
+int nfs_fsync_sync(struct nfs_context *nfs, struct nfsfh *nfsfh);
+
+
+
+/*
+ * TRUNCATE()
+ */
+/*
+ * Async truncate()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_truncate_async(struct nfs_context *nfs, const char *path, off_t length, nfs_cb cb, void *private_data);
+/*
+ * Sync truncate()
+ * Function returns
+ *      0 : Success
+ * -errno : An error occured.
+ */
+int nfs_truncate_sync(struct nfs_context *nfs, const char *path, off_t length);
+
+
+
+/*
+ * FTRUNCATE()
+ */
+/*
+ * Async ftruncate()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_ftruncate_async(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t length, nfs_cb cb, void *private_data);
+/*
+ * Sync ftruncate()
+ * Function returns
+ *      0 : Success
+ * -errno : An error occured.
+ */
+int nfs_ftruncate_sync(struct nfs_context *nfs, struct nfsfh *nfsfh, off_t length);
+
+
+
+
+
+
+/*
+ * MKDIR()
+ */
+/*
+ * Async mkdir()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_mkdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
+/*
+ * Sync mkdir()
+ * Function returns
+ *      0 : Success
+ * -errno : An error occured.
+ */
+int nfs_mkdir_sync(struct nfs_context *nfs, const char *path);
+
+
+
+/*
+ * RMDIR()
+ */
+/*
+ * Async rmdir()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_rmdir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
+/*
+ * Sync rmdir()
+ * Function returns
+ *      0 : Success
+ * -errno : An error occured.
+ */
+int nfs_rmdir_sync(struct nfs_context *nfs, const char *path);
+
+
+
+
+/*
+ * CREAT()
+ */
+/*
+ * Async creat()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is a struct *nfsfh;
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_creat_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data);
+/*
+ * Sync creat()
+ * Function returns
+ *      0 : Success
+ * -errno : An error occured.
+ */
+int nfs_creat_sync(struct nfs_context *nfs, const char *path, int mode, struct nfsfh **nfsfh);
+
+
+
+
+
+/*
+ * UNLINK()
+ */
+/*
+ * Async unlink()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_unlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
+/*
+ * Sync unlink()
+ * Function returns
+ *      0 : Success
+ * -errno : An error occured.
+ */
+int nfs_unlink_sync(struct nfs_context *nfs, const char *path);
+
+
+
+
+/*
+ * OPENDIR()
+ */
+struct nfsdir;
+/*
+ * Async opendir()
+ *
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When struct nfsdir * is returned, this resource is closed/freed by calling nfs_closedir()
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is struct nfsdir *
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_opendir_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
+/*
+ * Sync opendir()
+ * Function returns
+ *      0 : Success
+ * -errno : An error occured.
+ */
+int nfs_opendir_sync(struct nfs_context *nfs, const char *path, struct nfsdir **nfsdir);
+
+
+
+/*
+ * READDIR()
+ */
+struct nfsdirent  {
+       struct nfsdirent *next;
+       char *name;
+       uint64_t inode;
+};
+/*
+ * nfs_readdir() never blocks, so no special sync/async versions are available
+ */
+struct nfsdirent *nfs_readdir(struct nfs_context *nfs, struct nfsdir *nfsdir);
+
+
+
+/*
+ * READDIR()
+ */
+/*
+ * nfs_closedir() never blocks, so no special sync/async versions are available
+ */
+void nfs_closedir(struct nfs_context *nfs, struct nfsdir *nfsdir);
+
+
+
+/*
+ * STATVFS()
+ */
+/*
+ * Async statvfs(<dirname>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is struct statvfs *
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+struct statvfs;
+int nfs_statvfs_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
+/*
+ * Sync statvfs(<dirname>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_statvfs_sync(struct nfs_context *nfs, const char *path, struct statvfs *svfs);
+
+
+/*
+ * READLINK()
+ */
+/*
+ * Async readlink(<name>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is a char *
+ *          data is only valid during the callback and is automatically freed when the callback returns.
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+struct statvfs;
+int nfs_readlink_async(struct nfs_context *nfs, const char *path, nfs_cb cb, void *private_data);
+/*
+ * Sync readlink(<name>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_readlink_sync(struct nfs_context *nfs, const char *path, char *buf, int bufsize);
+
+
+
+/*
+ * CHMOD()
+ */
+/*
+ * Async chmod(<name>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_chmod_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data);
+/*
+ * Sync chmod(<name>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_chmod_sync(struct nfs_context *nfs, const char *path, int mode);
+
+
+
+/*
+ * FCHMOD()
+ */
+/*
+ * Async fchmod(<handle>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_fchmod_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode, nfs_cb cb, void *private_data);
+/*
+ * Sync fchmod(<handle>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_fchmod_sync(struct nfs_context *nfs, struct nfsfh *nfsfh, int mode);
+
+
+
+/*
+ * CHOWN()
+ */
+/*
+ * Async chown(<name>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_chown_async(struct nfs_context *nfs, const char *path, int uid, int gid, nfs_cb cb, void *private_data);
+/*
+ * Sync chown(<name>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_chown_sync(struct nfs_context *nfs, const char *path, int uid, int gid);
+
+
+
+/*
+ * FCHOWN()
+ */
+/*
+ * Async fchown(<handle>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_fchown_async(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int gid, nfs_cb cb, void *private_data);
+/*
+ * Sync fchown(<handle>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_fchown_sync(struct nfs_context *nfs, struct nfsfh *nfsfh, int uid, int gid);
+
+
+
+
+/*
+ * UTIMES()
+ */
+/*
+ * Async utimes(<path>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_utimes_async(struct nfs_context *nfs, const char *path, struct timeval *times, nfs_cb cb, void *private_data);
+/*
+ * Sync utimes(<path>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_utimes_sync(struct nfs_context *nfs, const char *path, struct timeval *times);
+
+
+/*
+ * UTIME()
+ */
+/*
+ * Async utime(<path>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+struct utimbuf;
+int nfs_utime_async(struct nfs_context *nfs, const char *path, struct utimbuf *times, nfs_cb cb, void *private_data);
+/*
+ * Sync utime(<path>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_utime_sync(struct nfs_context *nfs, const char *path, struct utimbuf *times);
+
+
+
+
+/*
+ * ACCESS()
+ */
+/*
+ * Async access(<path>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_access_async(struct nfs_context *nfs, const char *path, int mode, nfs_cb cb, void *private_data);
+/*
+ * Sync access(<path>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_access_sync(struct nfs_context *nfs, const char *path, int mode);
+
+
+
+
+/*
+ * SYMLINK()
+ */
+/*
+ * Async symlink(<path>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_symlink_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data);
+/*
+ * Sync symlink(<path>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_symlink_sync(struct nfs_context *nfs, const char *oldpath, const char *newpath);
+
+
+/*
+ * RENAME()
+ */
+/*
+ * Async rename(<oldpath>, <newpath>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_rename_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data);
+/*
+ * Sync rename(<oldpath>, <newpath>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_rename_sync(struct nfs_context *nfs, const char *oldpath, const char *newpath);
+
+
+
+/*
+ * LINK()
+ */
+/*
+ * Async link(<oldpath>, <newpath>)
+ * Function returns
+ *  0 : The operation was initiated. Once the operation finishes, the callback will be invoked.
+ * <0 : An error occured when trying to set up the operation. The callback will not be invoked.
+ *
+ * When the callback is invoked, status indicates the result:
+ *      0 : Success.
+ *          data is NULL
+ * -errno : An error occured.
+ *          data is the error string.
+ */
+int nfs_link_async(struct nfs_context *nfs, const char *oldpath, const char *newpath, nfs_cb cb, void *private_data);
+/*
+ * Sync link(<oldpath>, <newpath>)
+ * Function returns
+ *      0 : The operation was successfull.
+ * -errno : The command failed.
+ */
+int nfs_link_sync(struct nfs_context *nfs, const char *oldpath, const char *newpath);
+
+
+
+//qqq replace later with lseek(cur, 0)
+off_t nfs_get_current_offset(struct nfsfh *nfsfh);