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mc/vfs/fish.c
Pavel Roskin 70ec6bbd26 Remove fish_which().
2002-11-13 04:00:28 +00:00

946 lines
23 KiB
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/* Virtual File System: FISH implementation for transfering files over
shell connections.
Copyright (C) 1998 The Free Software Foundation
Written by: 1998 Pavel Machek
Spaces fix: 2000 Michal Svec
Derived from ftpfs.c.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License
as published by the Free Software Foundation; either version 2 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*
* Read README.fish for protocol specification.
*
* Syntax of path is: /#sh:user@host[:Cr]/path
* where C means you want compressed connection,
* and r means you want to use rsh
*
* Namespace: fish_vfs_ops exported.
*/
/* Define this if your ssh can take -I option */
#include <config.h>
#undef HAVE_HACKED_SSH
#include "utilvfs.h"
#include "../src/dialog.h" /* For MSG_ERROR */
#include "xdirentry.h"
#include "vfs.h"
#include "tcputil.h"
#include "fish.h"
/*
* Reply codes.
*/
#define PRELIM 1 /* positive preliminary */
#define COMPLETE 2 /* positive completion */
#define CONTINUE 3 /* positive intermediate */
#define TRANSIENT 4 /* transient negative completion */
#define ERROR 5 /* permanent negative completion */
/* If true, the directory cache is forced to reload */
static int force_expiration = 0;
/* FIXME: prev two variables should be killed */
/* command wait_flag: */
#define NONE 0x00
#define WAIT_REPLY 0x01
#define WANT_STRING 0x02
static char reply_str [80];
static int
command (vfs *me, vfs_s_super *super, int wait_reply, const char *fmt, ...)
__attribute__ ((format (printf, 4, 5)));
static int decode_reply (char *s, int was_garbage)
{
int code;
if (!sscanf(s, "%d", &code)) {
code = 500;
return 5;
}
if (code<100) return was_garbage ? ERROR : (!code ? COMPLETE : PRELIM);
return code / 100;
}
/* Returns a reply code, check /usr/include/arpa/ftp.h for possible values */
static int get_reply (vfs *me, int sock, char *string_buf, int string_len)
{
char answer[1024];
int was_garbage = 0;
for (;;) {
if (!vfs_s_get_line(me, sock, answer, sizeof(answer), '\n')) {
if (string_buf)
*string_buf = 0;
return 4;
}
if (strncmp(answer, "### ", 4)) {
was_garbage = 1;
if (string_buf) {
strncpy(string_buf, answer, string_len - 1);
*(string_buf + string_len - 1) = 0;
}
} else return decode_reply(answer+4, was_garbage);
}
}
#define SUP super->u.fish
static int
command (vfs *me, vfs_s_super *super, int wait_reply, const char *fmt, ...)
{
va_list ap;
char *str;
int status;
FILE *logfile = MEDATA->logfile;
va_start (ap, fmt);
str = g_strdup_vprintf (fmt, ap);
va_end (ap);
if (logfile){
fwrite (str, strlen (str), 1, logfile);
fflush (logfile);
}
enable_interrupt_key();
status = write(SUP.sockw, str, strlen(str));
g_free (str);
disable_interrupt_key();
if (status < 0)
return TRANSIENT;
if (wait_reply)
return get_reply (me, SUP.sockr, (wait_reply & WANT_STRING) ? reply_str : NULL, sizeof (reply_str)-1);
return COMPLETE;
}
static void
free_archive (vfs *me, vfs_s_super *super)
{
if ((SUP.sockw != -1) || (SUP.sockr != -1)){
print_vfs_message (_("fish: Disconnecting from %s"), super->name?super->name:"???");
command(me, super, NONE, "#BYE\nexit\n");
close(SUP.sockw);
close(SUP.sockr);
SUP.sockw = SUP.sockr = -1;
}
g_free (SUP.host);
g_free (SUP.user);
g_free (SUP.cwdir);
g_free (SUP.password);
}
static void
pipeopen(vfs_s_super *super, char *path, char *argv[])
{
int fileset1[2], fileset2[2];
int res;
if ((pipe(fileset1)<0) || (pipe(fileset2)<0))
vfs_die("Could not pipe(): %m.");
if ((res = fork())) {
if (res<0) vfs_die("Could not fork(): %m.");
/* We are the parent */
close(fileset1[0]);
SUP.sockw = fileset1[1];
close(fileset2[1]);
SUP.sockr = fileset2[0];
} else {
close(0);
dup(fileset1[0]);
close(fileset1[0]); close(fileset1[1]);
close(1); close(2);
dup(fileset2[1]);
/* stderr to /dev/null */
open ("/dev/null", O_WRONLY);
close(fileset2[0]); close(fileset2[1]);
execvp(path, argv);
_exit(3);
}
}
/* The returned directory should always contain a trailing slash */
static char *fish_getcwd(vfs *me, vfs_s_super *super)
{
if (command(me, super, WANT_STRING, "#PWD\npwd; echo '### 200'\n") == COMPLETE)
return g_strconcat (reply_str, "/", NULL);
ERRNOR (EIO, NULL);
}
static int
open_archive_int (vfs *me, vfs_s_super *super)
{
char *argv[100];
char *xsh = (SUP.flags == FISH_FLAG_RSH ? "rsh" : "ssh");
int i = 0;
argv[i++] = xsh;
#ifdef HAVE_HACKED_SSH
argv[i++] = "-I";
#endif
argv[i++] = "-l";
argv[i++] = SUP.user;
argv[i++] = SUP.host;
if (SUP.flags == FISH_FLAG_COMPRESSED)
argv[i++] = "-C";
argv[i++] = "echo FISH:; /bin/sh";
argv[i++] = NULL;
#if 0
/* Debugging hack */
if (!MEDATA->logfile)
MEDATA->logfile = fopen( "/home/pavel/talk.fish", "w+" ); /* FIXME */
#endif
pipeopen(super, xsh, argv );
{
char answer[2048];
print_vfs_message( _("fish: Waiting for initial line...") );
if (!vfs_s_get_line(me, SUP.sockr, answer, sizeof(answer), ':'))
ERRNOR (E_PROTO, -1);
print_vfs_message( answer );
if (strstr(answer, "assword")) {
/* Currently, this does not work. ssh reads passwords from
/dev/tty, not from stdin :-(. */
#ifndef HAVE_HACKED_SSH
message_1s (1, MSG_ERROR, _("Sorry, we can not do password authenticated connections for now."));
ERRNOR (EPERM, -1);
#endif
if (!SUP.password){
char *p, *op;
p = g_strconcat (_(" fish: Password required for "), SUP.user,
" ", NULL);
op = vfs_get_password (p);
g_free (p);
if (op == NULL)
ERRNOR (EPERM, -1);
SUP.password = g_strdup (op);
wipe_password(op);
}
print_vfs_message( _("fish: Sending password...") );
write(SUP.sockw, SUP.password, strlen(SUP.password));
write(SUP.sockw, "\n", 1);
}
}
print_vfs_message( _("fish: Sending initial line...") );
/*
* Run `start_fish_server'. If it doesn't exist - no problem,
* we'll talk directly to the shell.
*/
if (command (me, super, WAIT_REPLY,
"#FISH\necho; start_fish_server 2>&1;"
" echo '### 200'\n") != COMPLETE)
ERRNOR (E_PROTO, -1);
print_vfs_message( _("fish: Handshaking version...") );
if (command (me, super, WAIT_REPLY, "#VER 0.0.0\necho '### 000'\n") != COMPLETE)
ERRNOR (E_PROTO, -1);
/* Set up remote locale to C, otherwise dates cannot be recognized */
if (command (me, super, WAIT_REPLY, "LANG=C; LC_ALL=C; LC_TIME=C\n"
"export LANG; export LC_ALL; export LC_TIME\n"
"echo '### 200'\n") != COMPLETE)
ERRNOR (E_PROTO, -1);
print_vfs_message( _("fish: Setting up current directory...") );
SUP.cwdir = fish_getcwd (me, super);
print_vfs_message( _("fish: Connected, home %s."), SUP.cwdir );
#if 0
super->name = g_strconcat ( "/#sh:", SUP.user, "@", SUP.host, "/", NULL );
#endif
super->name = g_strdup(PATH_SEP_STR);
super->root = vfs_s_new_inode (me, super, vfs_s_default_stat(me, S_IFDIR | 0755));
return 0;
}
static int
open_archive (vfs *me, vfs_s_super *super, char *archive_name, char *op)
{
char *host, *user, *password, *p;
int flags;
p = vfs_split_url (strchr(op, ':')+1, &host, &user, &flags, &password, 0, URL_NOSLASH);
if (p)
g_free (p);
SUP.host = host;
SUP.user = user;
SUP.flags = flags;
if (!strncmp( op, "rsh:", 4 ))
SUP.flags |= FISH_FLAG_RSH;
SUP.cwdir = NULL;
if (password)
SUP.password = password;
return open_archive_int (me, super);
}
static int
archive_same(vfs *me, vfs_s_super *super, char *archive_name, char *op, void *cookie)
{
char *host, *user;
int flags;
op = vfs_split_url (strchr(op, ':')+1, &host, &user, &flags, 0, 0, URL_NOSLASH);
if (op)
g_free (op);
flags = ((strcmp (host, SUP.host) == 0) &&
(strcmp (user, SUP.user) == 0) &&
(flags == SUP.flags));
g_free (host);
g_free (user);
return flags;
}
static int
dir_uptodate(vfs *me, vfs_s_inode *ino)
{
struct timeval tim;
gettimeofday(&tim, NULL);
if (force_expiration) {
force_expiration = 0;
return 0;
}
if (tim.tv_sec < ino->u.fish.timestamp.tv_sec)
return 1;
return 0;
}
static int
dir_load(vfs *me, vfs_s_inode *dir, char *remote_path)
{
vfs_s_super *super = dir->super;
char buffer[8192];
vfs_s_entry *ent = NULL;
FILE *logfile;
char *quoted_path;
logfile = MEDATA->logfile;
print_vfs_message(_("fish: Reading directory %s..."), remote_path);
gettimeofday(&dir->u.fish.timestamp, NULL);
dir->u.fish.timestamp.tv_sec += 10; /* was 360: 10 is good for
stressing direntry layer a bit */
quoted_path = name_quote (remote_path, 0);
command(me, super, NONE,
"#LIST /%s\n"
"ls -lLa /%s 2>/dev/null | grep '^[^cbt]' | (\n"
"while read p x u g s m d y n; do\n"
"echo \"P$p $u.$g\nS$s\nd$m $d $y\n:$n\n\"\n"
"done\n"
")\n"
"ls -lLa /%s 2>/dev/null | grep '^[cb]' | (\n"
"while read p x u g a i m d y n; do\n"
"echo \"P$p $u.$g\nE$a$i\nd$m $d $y\n:$n\n\"\n"
"done\n"
")\n"
"echo '### 200'\n",
remote_path, quoted_path, quoted_path);
g_free (quoted_path);
#define SIMPLE_ENTRY vfs_s_generate_entry(me, NULL, dir, 0)
ent = SIMPLE_ENTRY;
while (1) {
int res = vfs_s_get_line_interruptible (me, buffer, sizeof (buffer), SUP.sockr);
if ((!res) || (res == EINTR)) {
vfs_s_free_entry(me, ent);
me->verrno = ECONNRESET;
goto error;
}
if (logfile) {
fputs (buffer, logfile);
fputs ("\n", logfile);
fflush (logfile);
}
if (!strncmp(buffer, "### ", 4))
break;
if ((!buffer[0])) {
if (ent->name) {
vfs_s_insert_entry(me, dir, ent);
ent = SIMPLE_ENTRY;
}
continue;
}
#define ST ent->ino->st
switch(buffer[0]) {
case ':': {
/* char *c; */
if (!strcmp(buffer+1, ".") || !strcmp(buffer+1, ".."))
break; /* We'll do . and .. ourself */
ent->name = g_strdup(buffer+1);
/* if ((c=strchr(ent->name, ' ')))
*c = 0; / * this is ugly, but we can not handle " " in name */
break;
}
case 'S': ST.st_size = atoi(buffer+1); break;
case 'P': {
int i;
if ((i = vfs_parse_filetype(buffer[1])) ==-1)
break;
ST.st_mode = i;
if ((i = vfs_parse_filemode(buffer+2)) ==-1)
break;
ST.st_mode |= i;
if (S_ISLNK(ST.st_mode))
ST.st_mode = 0;
}
break;
case 'd': {
vfs_split_text(buffer+1);
if (!vfs_parse_filedate(0, &ST.st_ctime))
break;
ST.st_atime = ST.st_mtime = ST.st_ctime;
}
break;
case 'D': {
struct tm tim;
if (sscanf(buffer+1, "%d %d %d %d %d %d", &tim.tm_year, &tim.tm_mon,
&tim.tm_mday, &tim.tm_hour, &tim.tm_min, &tim.tm_sec) != 6)
break;
ST.st_atime = ST.st_mtime = ST.st_ctime = mktime(&tim);
}
break;
case 'E': {
int maj, min;
if (sscanf(buffer+1, "%d,%d", &maj, &min) != 2)
break;
#ifdef HAVE_ST_RDEV
ST.st_rdev = (maj << 8) | min;
#endif
}
case 'L': ent->ino->linkname = g_strdup(buffer+1);
break;
}
}
vfs_s_free_entry (me, ent);
me->verrno = E_REMOTE;
if (decode_reply(buffer+4, 0) == COMPLETE) {
g_free (SUP.cwdir);
SUP.cwdir = g_strdup (remote_path);
print_vfs_message (_("%s: done."), me->name);
return 0;
}
error:
print_vfs_message (_("%s: failure"), me->name);
return 1;
}
static int
file_store(vfs *me, vfs_s_fh *fh, char *name, char *localname)
{
vfs_s_super *super = FH_SUPER;
int n, total;
char buffer[8192];
struct stat s;
int was_error = 0;
int h;
char *quoted_name;
h = open (localname, O_RDONLY);
if (h == -1)
ERRNOR (EIO, -1);
if (fstat(h, &s)<0) {
close (h);
ERRNOR (EIO, -1);
}
/* Use this as stor: ( dd block ; dd smallblock ) | ( cat > file; cat > /dev/null ) */
print_vfs_message(_("fish: store %s: sending command..."), name );
quoted_name = name_quote (name, 0);
/*
* FIXME: Limit size to unsigned long for now.
* Files longer than 256 * ULONG_MAX are not supported.
*/
if (!fh->u.fish.append)
n = command (me, super, WAIT_REPLY,
"#STOR %lu /%s\n"
"> /%s\n"
"echo '### 001'\n"
"(\n"
"dd ibs=256 obs=4096 count=%lu\n"
"dd bs=%lu count=1\n"
") 2>/dev/null | (\n"
"cat > /%s\n"
"cat > /dev/null\n"
"); echo '### 200'\n",
(unsigned long) s.st_size, name, quoted_name,
(unsigned long) (s.st_size >> 8),
((unsigned long) s.st_size) & (256 - 1), quoted_name);
else
n = command (me, super, WAIT_REPLY,
"#STOR %lu /%s\n"
"echo '### 001'\n"
"(\n"
"dd ibs=256 obs=4096 count=%lu\n"
"dd bs=%lu count=1\n"
") 2>/dev/null | (\n"
"cat >> /%s\n"
"cat > /dev/null\n"
"); echo '### 200'\n",
(unsigned long) s.st_size, name,
(unsigned long) (s.st_size >> 8),
((unsigned long) s.st_size) & (256 - 1), quoted_name);
g_free (quoted_name);
if (n != PRELIM) {
close (h);
ERRNOR(E_REMOTE, -1);
}
total = 0;
while (1) {
while ((n = read(h, buffer, sizeof(buffer))) < 0) {
if ((errno == EINTR) && got_interrupt)
continue;
print_vfs_message(_("fish: Local read failed, sending zeros") );
close(h);
h = open( "/dev/zero", O_RDONLY );
}
if (n == 0)
break;
while (write(SUP.sockw, buffer, n) < 0) {
me->verrno = errno;
goto error_return;
}
disable_interrupt_key();
total += n;
print_vfs_message(_("fish: storing %s %d (%lu)"),
was_error ? _("zeros") : _("file"), total,
(unsigned long) s.st_size);
}
close(h);
if ((get_reply (me, SUP.sockr, NULL, 0) != COMPLETE) || was_error)
ERRNOR (E_REMOTE, -1);
return 0;
error_return:
close(h);
get_reply(me, SUP.sockr, NULL, 0);
return -1;
}
static int linear_start(vfs *me, vfs_s_fh *fh, int offset)
{
char *name;
char *quoted_name;
if (offset)
ERRNOR (E_NOTSUPP, 0);
/* fe->local_stat.st_mtime = 0; FIXME: what is this good for? */
name = vfs_s_fullpath (me, fh->ino);
if (!name)
return 0;
quoted_name = name_quote (name, 0);
g_free (name);
name = quoted_name;
fh->u.fish.append = 0;
offset = command(me, FH_SUPER, WANT_STRING,
"#RETR /%s\n"
"ls -l /%s 2>/dev/null | (\n"
"read var1 var2 var3 var4 var5 var6\n"
"echo \"$var5\"\n"
")\n"
"echo '### 100'\n"
"cat /%s\n"
"echo '### 200'\n",
name, name, name );
g_free (name);
if (offset != PRELIM) ERRNOR (E_REMOTE, 0);
fh->linear = LS_LINEAR_OPEN;
fh->u.fish.got = 0;
if (sscanf( reply_str, "%d", &fh->u.fish.total )!=1)
ERRNOR (E_REMOTE, 0);
return 1;
}
static void
linear_abort (vfs *me, vfs_s_fh *fh)
{
vfs_s_super *super = FH_SUPER;
char buffer[8192];
int n;
print_vfs_message( _("Aborting transfer...") );
do {
n = MIN(8192, fh->u.fish.total - fh->u.fish.got);
if (n)
if ((n = read(SUP.sockr, buffer, n)) < 0)
return;
} while (n);
if (get_reply (me, SUP.sockr, NULL, 0) != COMPLETE)
print_vfs_message( _("Error reported after abort.") );
else
print_vfs_message( _("Aborted transfer would be successful.") );
}
static int
linear_read (vfs *me, vfs_s_fh *fh, void *buf, int len)
{
vfs_s_super *super = FH_SUPER;
int n = 0;
len = MIN( fh->u.fish.total - fh->u.fish.got, len );
disable_interrupt_key();
while (len && ((n = read (SUP.sockr, buf, len))<0)) {
if ((errno == EINTR) && !got_interrupt())
continue;
break;
}
enable_interrupt_key();
if (n>0) fh->u.fish.got += n;
if (n<0) linear_abort(me, fh);
if ((!n) && ((get_reply (me, SUP.sockr, NULL, 0) != COMPLETE)))
ERRNOR (E_REMOTE, -1);
ERRNOR (errno, n);
}
static void
linear_close (vfs *me, vfs_s_fh *fh)
{
if (fh->u.fish.total != fh->u.fish.got)
linear_abort(me, fh);
else if (stat (fh->ino->localname, &fh->ino->u.fish.local_stat) < 0)
fh->ino->u.fish.local_stat.st_mtime = 0;
}
static int
fish_ctl (void *fh, int ctlop, int arg)
{
return 0;
switch (ctlop) {
case MCCTL_IS_NOTREADY:
{
int v;
if (!FH->linear)
vfs_die ("You may not do this");
if (FH->linear == LS_LINEAR_CLOSED)
return 0;
v = vfs_s_select_on_two (FH_SUPER->u.fish.sockr, 0);
if (((v < 0) && (errno == EINTR)) || v == 0)
return 1;
return 0;
}
default:
return 0;
}
}
static int
send_fish_command(vfs *me, vfs_s_super *super, char *cmd, int flags)
{
int r;
r = command (me, super, WAIT_REPLY, cmd);
vfs_add_noncurrent_stamps (&vfs_fish_ops, (vfsid) super, NULL);
if (r != COMPLETE) ERRNOR (E_REMOTE, -1);
if (flags & OPT_FLUSH)
vfs_s_invalidate(me, super);
return 0;
}
#define PREFIX \
char buf[BUF_LARGE]; \
char *rpath; \
vfs_s_super *super; \
if (!(rpath = vfs_s_get_path_mangle(me, path, &super, 0))) \
return -1; \
rpath = name_quote (rpath, 0);
#define POSTFIX(flags) \
g_free (rpath); \
return send_fish_command(me, super, buf, flags);
static int
fish_chmod (vfs *me, char *path, int mode)
{
PREFIX
g_snprintf(buf, sizeof(buf), "#CHMOD %4.4o /%s\n"
"chmod %4.4o \"/%s\" 2>/dev/null\n"
"echo '### 000'\n",
mode & 07777, rpath,
mode & 07777, rpath);
POSTFIX(OPT_FLUSH);
}
#define FISH_OP(name, chk, string) \
static int fish_##name (vfs *me, char *path1, char *path2) \
{ \
char buf[BUF_LARGE]; \
char *rpath1, *rpath2; \
vfs_s_super *super1, *super2; \
if (!(rpath1 = vfs_s_get_path_mangle(me, path1, &super1, 0))) \
return -1; \
if (!(rpath2 = vfs_s_get_path_mangle(me, path2, &super2, 0))) \
return -1; \
rpath1 = name_quote (rpath1, 0); \
rpath2 = name_quote (rpath2, 0); \
g_snprintf(buf, sizeof(buf), string "\n", rpath1, rpath2, rpath1, rpath2); \
g_free (rpath1); \
g_free (rpath2); \
return send_fish_command(me, super2, buf, OPT_FLUSH); \
}
#define XTEST if (bucket1 != bucket2) { ERRNOR (EXDEV, -1); }
FISH_OP(rename, XTEST, "#RENAME /%s /%s\n"
"mv /%s /%s 2>/dev/null\n"
"echo '### 000'" )
FISH_OP(link, XTEST, "#LINK /%s /%s\n"
"ln /%s /%s 2>/dev/null\n"
"echo '### 000'" )
static int fish_symlink (vfs *me, char *setto, char *path)
{
PREFIX
setto = name_quote (setto, 0);
g_snprintf(buf, sizeof(buf),
"#SYMLINK %s /%s\n"
"ln -s %s /%s 2>/dev/null\n"
"echo '### 000'\n",
setto, rpath, setto, rpath);
g_free (setto);
POSTFIX(OPT_FLUSH);
}
static int
fish_chown (vfs *me, char *path, int owner, int group)
{
char *sowner, *sgroup;
struct passwd *pw;
struct group *gr;
PREFIX
if ((pw = getpwuid (owner)) == NULL)
return 0;
if ((gr = getgrgid (group)) == NULL)
return 0;
sowner = pw->pw_name;
sgroup = gr->gr_name;
g_snprintf(buf, sizeof(buf),
"#CHOWN /%s /%s\n"
"chown %s /%s 2>/dev/null\n"
"echo '### 000'\n",
sowner, rpath,
sowner, rpath);
send_fish_command(me, super, buf, OPT_FLUSH);
/* FIXME: what should we report if chgrp succeeds but chown fails? */
g_snprintf(buf, sizeof(buf),
"#CHGRP /%s /%s\n"
"chgrp %s /%s 2>/dev/null\n"
"echo '### 000'\n",
sgroup, rpath,
sgroup, rpath);
/* send_fish_command(me, super, buf, OPT_FLUSH); */
POSTFIX(OPT_FLUSH)
}
static int fish_unlink (vfs *me, char *path)
{
PREFIX
g_snprintf(buf, sizeof(buf),
"#DELE /%s\n"
"rm -f /%s 2>/dev/null\n"
"echo '### 000'\n",
rpath, rpath);
POSTFIX(OPT_FLUSH);
}
static int fish_mkdir (vfs *me, char *path, mode_t mode)
{
PREFIX
g_snprintf(buf, sizeof(buf),
"#MKD /%s\n"
"mkdir /%s 2>/dev/null\n"
"echo '### 000'\n",
rpath, rpath);
POSTFIX(OPT_FLUSH);
}
static int fish_rmdir (vfs *me, char *path)
{
PREFIX
g_snprintf(buf, sizeof(buf),
"#RMD /%s\n"
"rmdir /%s 2>/dev/null\n"
"echo '### 000'\n",
rpath, rpath);
POSTFIX(OPT_FLUSH);
}
static int fish_fh_open (vfs *me, vfs_s_fh *fh, int flags, int mode)
{
fh->u.fish.append = 0;
/* File will be written only, so no need to retrieve it */
if (((flags & O_WRONLY) == O_WRONLY) && !(flags & (O_RDONLY|O_RDWR))){
fh->u.fish.append = flags & O_APPEND;
if (!fh->ino->localname){
int tmp_handle = mc_mkstemps (&fh->ino->localname, me->name, NULL);
if (tmp_handle == -1)
return -1;
close (tmp_handle);
}
return 0;
}
if (!fh->ino->localname)
if (vfs_s_retrieve_file (me, fh->ino)==-1)
return -1;
if (!fh->ino->localname)
vfs_die( "retrieve_file failed to fill in localname" );
return 0;
}
static struct vfs_s_data fish_data = {
NULL,
0,
0,
NULL,
NULL, /* init_inode */
NULL, /* free_inode */
NULL, /* init_entry */
NULL, /* archive_check */
archive_same,
open_archive,
free_archive,
fish_fh_open, /* fh_open */
NULL, /* fh_close */
vfs_s_find_entry_linear,
dir_load,
dir_uptodate,
file_store,
linear_start,
linear_read,
linear_close
};
static void
fish_fill_names (vfs *me, void (*func)(char *))
{
struct vfs_s_super * super = fish_data.supers;
char *flags;
char *name;
while (super){
switch (SUP.flags & (FISH_FLAG_RSH | FISH_FLAG_COMPRESSED)) {
case FISH_FLAG_RSH:
flags = ":r";
break;
case FISH_FLAG_COMPRESSED:
flags = ":C";
break;
case FISH_FLAG_RSH | FISH_FLAG_COMPRESSED:
flags = "";
break;
default:
flags = "";
break;
}
name = g_strconcat ("/#sh:", SUP.user, "@", SUP.host, flags,
"/", SUP.cwdir, NULL);
(*func)(name);
g_free (name);
super = super->next;
}
}
vfs vfs_fish_ops = {
NULL, /* This is place of next pointer */
"fish",
F_EXEC, /* flags */
"sh:", /* prefix */
&fish_data, /* data */
0, /* errno */
NULL,
NULL,
fish_fill_names,
NULL,
vfs_s_open,
vfs_s_close,
vfs_s_read,
vfs_s_write,
vfs_s_opendir,
vfs_s_readdir,
vfs_s_closedir,
vfs_s_telldir,
vfs_s_seekdir,
vfs_s_stat,
vfs_s_lstat,
vfs_s_fstat,
fish_chmod,
fish_chown,
NULL, /* utime */
vfs_s_readlink,
fish_symlink, /* symlink */
fish_link, /* link */
fish_unlink,
fish_rename, /* rename */
vfs_s_chdir,
vfs_s_ferrno,
vfs_s_lseek,
NULL, /* mknod */
vfs_s_getid,
vfs_s_nothingisopen,
vfs_s_free,
NULL, /* vfs_s_getlocalcopy, */
NULL, /* vfs_s_ungetlocalcopy, */
fish_mkdir,
fish_rmdir,
fish_ctl,
vfs_s_setctl
MMAPNULL
};
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