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Add hard link operation 

Works if the server supports the "hardlink@openssh.com" protocol
extension.
This commit is contained in:
Miklos Szeredi 2011-07-01 14:01:29 +02:00
parent eac5268e87
commit a575d48234
2 changed files with 30 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2011-07-01 Miklos Szeredi <miklos@szeredi.hu>
* Add hard link operation. Works if the server supports the
"hardlink@openssh.com" protocol extension.
2011-03-25 Miklos Szeredi <miklos@szeredi.hu>
* Fix possible deadlock on reconnection. Reported by Florian

25
sshfs.c
View File

@ -104,6 +104,7 @@
#define SFTP_EXT_POSIX_RENAME "posix-rename@openssh.com"
#define SFTP_EXT_STATVFS "statvfs@openssh.com"
#define SFTP_EXT_HARDLINK "hardlink@openssh.com"
#define PROTO_VERSION 3
@ -217,6 +218,7 @@ struct sshfs {
char *password;
int ext_posix_rename;
int ext_statvfs;
int ext_hardlink;
mode_t mnt_mode;
/* statistics */
@ -1377,6 +1379,9 @@ static int sftp_init_reply_ok(struct buffer *buf, uint32_t *version)
if (strcmp(ext, SFTP_EXT_STATVFS) == 0 &&
strcmp(extdata, "2") == 0)
sshfs.ext_statvfs = 1;
if (strcmp(ext, SFTP_EXT_HARDLINK) == 0 &&
strcmp(extdata, "1") == 0)
sshfs.ext_hardlink = 1;
} while (buf2.len < buf2.size);
}
return 0;
@ -2076,6 +2081,25 @@ static int sshfs_rename(const char *from, const char *to)
return err;
}
static int sshfs_link(const char *from, const char *to)
{
int err = -ENOSYS;
if (sshfs.ext_hardlink) {
struct buffer buf;
buf_init(&buf, 0);
buf_add_string(&buf, SFTP_EXT_HARDLINK);
buf_add_path(&buf, from);
buf_add_path(&buf, to);
err = sftp_request(SSH_FXP_EXTENDED, &buf, SSH_FXP_STATUS,
NULL);
buf_free(&buf);
}
return err;
}
static int sshfs_chmod(const char *path, mode_t mode)
{
int err;
@ -2829,6 +2853,7 @@ static struct fuse_cache_operations sshfs_oper = {
.unlink = sshfs_unlink,
.rmdir = sshfs_rmdir,
.rename = sshfs_rename,
.link = sshfs_link,
.chmod = sshfs_chmod,
.chown = sshfs_chown,
.truncate = sshfs_truncate,