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|
/* $Id$
*
* Original version of this file from p3nfsd-5.4 by
* Rudolf Koenig (rfkoenig@immd4.informatik.uni-erlangen.de)
*
* Modifications for plputils by Fritz Elfert <felfert@to.com>
*
*/
#include "OSdefs.h"
#include <stdio.h>
#include <ctype.h>
#include <pwd.h>
#if defined(__SVR4) || defined(__GLIBC__)
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#endif
#include "nfs_prot.h"
#include "mp.h"
#include "rfsv_api.h"
#include "builtins.h"
static device *devices;
struct cache *attrcache = NULL;
long param_read(builtin_node *node, char *buf, unsigned long offset, long len) {
char tmp[10];
unsigned long val = 0;
if (!strcmp(node->name, "acache"))
val = cache_keep;
if (!strcmp(node->name, "dcache"))
val = devcache_keep;
if (!strcmp(node->name, "debuglevel"))
val = debug;
sprintf(tmp, "%ld\n", val);
if (offset >= strlen(tmp))
return 0;
strncpy(buf, &tmp[offset], len);
return strlen(buf);
}
long param_write(builtin_node *node, char *buf, unsigned long offset, long len) {
unsigned long val;
if (len > 1 && offset == 0) {
int res = sscanf(buf, "%ld", &val);
if (res == 1) {
if (!strcmp(node->name, "acache"))
cache_keep = val;
if (!strcmp(node->name, "dcache"))
devcache_keep = val;
if (!strcmp(node->name, "debuglevel")) {
if (val != debug) {
if (val > debug)
debug = val;
debuglog("Set debug level to %d\n", val);
debug = val;
}
}
}
}
return len;
}
long param_getsize(builtin_node *node) {
char tmp[10];
return param_read(node, tmp, 0, sizeof(tmp));
}
long exit_write(builtin_node *node, char *buf, unsigned long offset, long len) {
if (len >= 4 && offset == 0) {
if (!strncmp(buf, "stop", 4))
exiting = 5; /* Lets try it 5 times (10 sec) */
}
return len;
}
long exit_read(builtin_node *node, char *buf, unsigned long offset, long len) {
if (offset > 4)
return 0;
if ((len + offset) > 5)
len = 5 - offset;
strncpy(buf, "----\n", len);
return strlen(buf);
}
long user_write(builtin_node *node, char *buf, unsigned long offset, long len) {
char tmp[256];
if (len > 1 && offset == 0) {
char *p;
if (len > (sizeof(tmp) - 1))
len = sizeof(tmp) - 1;
strncpy(tmp, buf, len);
debuglog("pwrite: %d\n", len);
tmp[len] = '\0';
if ((p = strchr(tmp, '\n')))
*p = '\0';
set_owner(tmp, 0);
}
return len;
}
long user_read(builtin_node *node, char *buf, unsigned long offset, long len) {
struct passwd *pw = getpwuid(root_fattr.uid);
char tmp[255];
if (pw)
sprintf(tmp, "%s\n", pw->pw_name);
else
sprintf(tmp, "???\n");
endpwent();
if (offset >= strlen(tmp))
return 0;
strncpy(buf, &tmp[offset], len);
return strlen(buf);
}
long user_getsize(builtin_node *node) {
char tmp[255];
return user_read(node, tmp, 0, sizeof(tmp));
}
static long generic_sattr(builtin_node *p, unsigned long sa, unsigned long da) {
p->attr |= sa;
p->attr &= ~da;
return 0;
}
long generic_getlinks(builtin_node *node) {
builtin_child *cp = node->childs;
long ncount = 0;
while (cp) {
if ((cp->node->flags & BF_EXISTS_ALWAYS) || rfsv_isalive())
ncount++;
cp = cp->next;
}
return ncount;
}
long generic_getdents(builtin_node *node, dentry **e) {
builtin_child *cp = node->childs;
while (cp) {
if ((cp->node->flags & BF_EXISTS_ALWAYS) || rfsv_isalive()) {
dentry *tmp = (dentry *)malloc(sizeof(dentry));
if (!tmp)
return -1;
tmp->time = time(0);
tmp->size = cp->node->getsize ? cp->node->getsize(cp->node) : cp->node->size;
tmp->attr = cp->node->attr;
tmp->name = strdup(cp->node->name);
tmp->next = *e;
*e = tmp;
}
cp = cp->next;
}
return 0;
}
static builtin_node *builtins = NULL;
static void dump_proctree(builtin_node *n);
static void clear_procs(builtin_child **childs) {
builtin_child **cp = childs;
debuglog("Before clear_procs\n");
dump_proctree(builtins);
while (*cp) {
if ((*cp)->node->flags & BF_ISPROCESS) {
builtin_child *tmp = *cp;
*cp = (*cp)->next;
unregister_builtin(tmp->node);
free(tmp);
} else
cp = &((*cp)->next);
}
debuglog("After clear_procs\n");
dump_proctree(builtins);
}
static time_t procs_stamp = 0;
static long procs_keep = 10;
static long proc_getlinks(builtin_node *node) {
builtin_child *cp;
long ncount = 0;
if ((time(0) - procs_stamp) > procs_keep) {
debuglog("PROCESSLIST\n");
clear_procs(&node->childs);
rpcs_ps();
procs_stamp = time(0);
debuglog("After rpcs_ps\n");
dump_proctree(builtins);
}
cp = node->childs;
while (cp) {
if ((cp->node->flags & BF_EXISTS_ALWAYS) || rfsv_isalive())
ncount++;
cp = cp->next;
}
return ncount;
}
static long proc_getdents(builtin_node *node, dentry **e) {
builtin_child *cp = node->childs;
while (cp) {
if ((cp->node->flags & BF_EXISTS_ALWAYS) || rfsv_isalive()) {
dentry *tmp = (dentry *)malloc(sizeof(dentry));
if (!tmp)
return -1;
tmp->time = time(0);
tmp->size = cp->node->getsize ? cp->node->getsize(cp->node) : cp->node->size;
tmp->attr = cp->node->attr;
tmp->name = strdup(cp->node->name);
tmp->next = *e;
*e = tmp;
}
cp = cp->next;
}
return 0;
}
static builtin_node proc_node = {
NULL, NULL, NULL, NULL, "proc", BF_EXISTS_ALWAYS|BF_NOCACHE, PSI_A_DIR, 0, NULL, NULL, NULL, NULL, proc_getlinks, proc_getdents
};
static builtin_node fixed_builtins[] = {
{ NULL, NULL, NULL, NULL, "owner", 0, PSI_A_READ | PSI_A_RDONLY, 0, rpcs_ownerSize, rpcs_ownerRead, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, "debuglevel", BF_EXISTS_ALWAYS|BF_NOCACHE, PSI_A_READ, 0, param_getsize, param_read, param_write, generic_sattr, NULL, NULL },
{ NULL, NULL, NULL, NULL, "acache", BF_EXISTS_ALWAYS|BF_NOCACHE, PSI_A_READ, 0, param_getsize, param_read, param_write, generic_sattr, NULL, NULL },
{ NULL, NULL, NULL, NULL, "dcache", BF_EXISTS_ALWAYS|BF_NOCACHE, PSI_A_READ, 0, param_getsize, param_read, param_write, generic_sattr, NULL, NULL },
{ NULL, NULL, NULL, NULL, "unixowner", BF_EXISTS_ALWAYS|BF_NOCACHE, PSI_A_READ, 0, user_getsize, user_read, user_write, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, "exit", BF_EXISTS_ALWAYS|BF_NOCACHE, PSI_A_READ, 5, NULL, exit_read, exit_write, NULL, NULL, NULL },
};
static int num_fixed_builtins = sizeof(fixed_builtins) / sizeof(builtin_node);
static void dump_proctree(builtin_node *n) {
while (n) {
if (n->name)
debuglog("node@%p, \"%s\"\n", n, n->name);
else
debuglog("node@%p, \"(null)\"\n", n);
if (n->childs) {
builtin_child *c = n->childs;
debuglog("Childs:\n");
while (c) {
if (c->node)
debuglog(" %s\n", c->node->name ? c->node->name : "(null)");
c = c->next;
}
}
if (n->parent)
debuglog("Parent: %s\n", n->parent->name);
n = n->next;
}
}
static int add_child(builtin_child **childs, builtin_node *node) {
builtin_child *newc = malloc(sizeof(builtin_child));
if (!newc) {
errorlog("Out of memory in add_child %s\n", node->name);
return -1;
}
newc->next = *childs;
newc->node = node;
*childs = newc;
return 0;
}
static int remove_child(builtin_child **childs, builtin_node *node) {
builtin_child **cp = childs;
if (debug)
debuglog("remove_child %s\n", node->name);
while (*cp) {
if ((*cp)->node == node) {
builtin_child *tmp = *cp;
*cp = (*cp)->next;
free(tmp);
return 0;
}
cp = &((*cp)->next);
}
return -1;
}
char *builtin_path(builtin_node *node) {
static char tmp[1024];
char tmp2[1024];
strcpy(tmp, node->name);
node = node->parent;
while (node) {
sprintf(tmp2, "%s\\%s", node->name, tmp);
strcpy(tmp, tmp2);
node = node->parent;
}
return tmp;
}
int unregister_builtin(builtin_node *node) {
builtin_child *cp = node->childs;
builtin_node **n;
/**
* Unlink and free childs.
*/
if (debug)
debuglog("unregister_builtin %s\n", node->name);
while (cp) {
builtin_child *old = cp;
cp->node->parent = 0L;
unregister_builtin(cp->node);
cp = cp->next;
free(old);
}
/**
* Unlink ourselves from parent child list.
*/
if (node->parent)
remove_child(&node->parent->childs, node);
n = &builtins;
while (*n) {
if (*n == node) {
*n = node->next;
break;
} else
n = &(*n)->next;
}
if (node->name)
free(node->name);
if (node->private_data)
free(node->private_data);
free(node);
return 0;
}
builtin_node *register_builtin(char *parent, builtin_node *node) {
builtin_node *bn;
builtin_node *parent_node = 0L;
debuglog("register_builtin node=%p\n", node);
if (!node) {
errorlog("register_builtin called with NULL node\n");
return NULL;
}
if (!node->name) {
errorlog("register_builtin called without name\n");
return NULL;
}
if (parent) {
debuglog("register_builtin parent: %s\n", parent);
for (bn = builtins; bn; bn = bn->next) {
debuglog("cmp parent: %s %s\n", builtin_path(bn), parent);
if (!strcmp(builtin_path(bn), parent)) {
debuglog("cmp parent found bn=%s\n", bn->name);
break;
}
}
if (!bn) {
errorlog("register_builtin for %s called with nonexistent parent %s\n", node->name, parent);
return NULL;
}
parent_node = bn;
}
bn = malloc(sizeof(builtin_node));
if (!bn) {
errorlog("out of memory while registering builtin %s\n", node->name);
return NULL;
}
memset(bn, 0, sizeof(builtin_node));
bn->name = strdup(node->name);
if (!bn->name) {
errorlog("out of memory while registering builtin %s\n", node->name);
free(bn);
return NULL;
}
if (parent_node)
debuglog("register_builtin %s in %s\n", node->name, builtin_path(parent_node));
else
debuglog("register_builtin %s\n", node->name);
bn->parent = parent_node;
bn->flags = node->flags;
bn->attr = node->attr;
bn->size = node->size;
bn->getsize = node->getsize;
bn->read = node->read;
bn->write = node->write;
bn->sattr = node->sattr;
bn->getlinks = node->getlinks;
bn->getdents = node->getdents;
bn->private_data = node->private_data;
if (parent_node) {
debuglog("Add child %s in %s\n", bn->name, bn->parent->name);
if (add_child(&(parent_node->childs), bn)) {
errorlog("Couldn't add child %s\n", bn->name);
free(bn->name);
free(bn);
return NULL;
}
}
bn->next = builtins;
builtins = bn;
debuglog("After register_builtin\n");
dump_proctree(builtins);
debuglog("register_builtin new node=%p\n", bn);
return bn;
}
/*
* Nfsd returned NFSERR_STALE if the psion wasn't present, but I didn't like
* it because the kernel returns the same when the nfsd itself is absent
*/
#define NO_PSION NFSERR_NXIO
/* FIXME: Send create attributes */
static struct diropres *
create_it(createargs *ca, int isdir)
{
static struct diropres res;
p_inode *dirinode = get_num(fh2inode(ca->where.dir.data));
char *name = dirinode->name;
fattr *fp;
p_inode *inode;
u_int32_t phandle;
int rfsv_ret;
debuglog("create: in %s %s (%#o, %d)\n",
name, ca->where.name, ca->attributes.mode, isdir);
name = build_path(name, ca->where.name);
if (isdir)
rfsv_ret = rfsv_mkdir(name);
else {
rfsv_ret = rfsv_fcreate(0x200, name, &phandle);
if (rfsv_ret == 0)
rfsv_ret = rfsv_fclose(phandle);
}
if (rfsv_ret) {
res.status = rfsv_isalive() ? NFSERR_NAMETOOLONG : NO_PSION;
return &res;
}
inode = get_nam(name);
inode2fh(inode->inode, res.diropres_u.diropres.file.data);
fp = &res.diropres_u.diropres.attributes;
bzero((char *) fp, sizeof(fp));
if (isdir) {
fp->type = NFDIR;
fp->mode = NFSMODE_DIR | 0700;
fp->nlink = 2;
} else {
fp->type = NFREG;
fp->mode = NFSMODE_REG | 0600;
fp->nlink = 1;
}
fp->uid = root_fattr.uid;
fp->gid = root_fattr.gid;
fp->blocksize = BLOCKSIZE;
fp->fileid = inode->inode;
fp->atime.seconds = fp->mtime.seconds = fp->ctime.seconds = time((time_t *) 0);
res.status = NFS_OK;
rem_cache(&attrcache, dirinode->inode);
rem_cache(&attrcache, inode->inode);
if (rfsv_isalive())
add_cache(&attrcache, inode->inode, fp);
return &res;
}
struct diropres *
nfsproc_create_2(createargs *ca)
{
return create_it(ca, 0);
}
struct diropres *
nfsproc_mkdir_2(createargs *ca)
{
return create_it(ca, 1);
}
static void
attr2pattr(long oattr, long nattr, long *psisattr, long *psidattr)
{
/*
* Following flags have to be set in order to let backups
* work properly
*/
*psisattr = *psidattr = 0;
if ((oattr & 0400) != (nattr & 0400)) {
if (nattr & 0400) /* readable */
*psidattr |= PSI_A_READ;
else
*psisattr |= PSI_A_READ;
}
if ((oattr & 0200) != (nattr & 0200)) {
if (nattr & 0200) /* readonly */
*psidattr |= PSI_A_RDONLY;
else
*psisattr |= PSI_A_RDONLY;
}
if ((oattr & 0020) != (nattr & 0020)) {
if (nattr & 0020) /* group-write -> archive */
*psisattr |= PSI_A_ARCHIVE;
else
*psidattr |= PSI_A_ARCHIVE;
}
if ((oattr & 0004) != (nattr & 0004)) {
if (nattr & 0004) /* Not world-read -> hidden */
*psidattr |= PSI_A_HIDDEN;
else
*psisattr |= PSI_A_HIDDEN;
}
if ((oattr & 0002) != (nattr & 0002)) {
if (nattr & 0002) /* world-write -> system */
*psisattr |= PSI_A_SYSTEM;
else
*psidattr |= PSI_A_SYSTEM;
}
}
static void
pattr2attr(long psiattr, long size, long ftime, fattr *fp, int inode)
{
bzero((char *) fp, sizeof(*fp));
if (psiattr & PSI_A_DIR) {
fp->type = NFDIR;
fp->mode = NFSMODE_DIR | 0700;
/*
* Damned filesystem.
* We have to count the number of subdirectories
* on the psion.
*/
fp->nlink = 0;
fp->size = BLOCKSIZE;
fp->blocks = 1;
} else {
fp->type = NFREG;
fp->mode = NFSMODE_REG;
fp->nlink = 1;
fp->size = size;
fp->blocks = (fp->size + BLOCKSIZE - 1) / BLOCKSIZE;
/*
* Following flags have to be set in order to let backups
* work properly
*/
if (psiattr & PSI_A_READ)
fp->mode |= 0400; /* File readable (?) */
if (!(psiattr & PSI_A_RDONLY))
fp->mode |= 0200; /* File writeable */
/* fp->mode |= 0100; File executable */
if (!(psiattr & PSI_A_HIDDEN))
fp->mode |= 0004; /* Not Hidden <-> world read */
if (psiattr & PSI_A_SYSTEM)
fp->mode |= 0002; /* System <-> world write */
if (psiattr & PSI_A_VOLUME)
fp->mode |= 0001; /* Volume <-> world exec */
if (psiattr & PSI_A_ARCHIVE)
fp->mode |= 0020; /* Modified <-> group write */
/* fp->mode |= 0040; Byte <-> group read */
/* fp->mode |= 0010; Text <-> group exec */
}
fp->uid = root_fattr.uid;
fp->gid = root_fattr.gid;
fp->blocksize = BLOCKSIZE;
fp->fileid = inode;
fp->rdev = fp->fsid = FID;
fp->atime.seconds = ftime;
fp->mtime.seconds = fp->ctime.seconds = fp->atime.seconds;
}
static int proc_top = 0;
static int
query_devices()
{
device *dp, *np;
int link_count = 2; /* set the root link count */
if (!proc_top) {
int i;
if (register_builtin(NULL, &proc_node)) {
for (i = 0; i < num_fixed_builtins; i++)
if (register_builtin(proc_node.name, &fixed_builtins[i]))
proc_top++;
} else
errorlog("Couldn't register /proc\n");
if (proc_top != num_fixed_builtins)
proc_top = 0;
}
if (query_cache)
return 0;
for (dp = devices; dp; dp = np) {
np = dp->next;
free(dp->name);
free(dp);
}
devices = 0;
debuglog("RFSV drivelist\n");
if (rfsv_drivelist(&link_count, &devices))
return 1;
query_cache = 1;
devcache_stamp = time(0);
root_fattr.nlink = link_count + 1;
return 0;
}
static int
mp_dircount(p_inode *inode, long *count)
{
dentry *e = NULL;
long ret;
builtin_node *bn;
*count = 0;
debuglog("dircount: %s\n", inode->name);
for (bn = builtins; bn; bn = bn->next) {
if ((!strcmp(builtin_path(bn), inode->name) && (bn->attr & PSI_A_DIR))) {
if (bn->getlinks)
*count = bn->getlinks(bn);
return 0;
}
}
debuglog("RFSV dir %s\n", inode->name);
if ((ret = rfsv_dir(dirname(inode->name), &e)))
return ret;
while (e) {
fattr fp;
char *bp;
dentry *o;
int ni;
bp = filname(e->name);
ni = get_nam(build_path(inode->name, bp))->inode;
free(e->name);
if (!search_cache(attrcache, ni)) {
pattr2attr(e->attr, e->size, e->time, &fp, ni);
if (rfsv_isalive())
add_cache(&attrcache, ni, &fp);
}
o = e;
e = e->next;
free(o);
(*count)++;
}
return 0;
}
struct attrstat *
nfsproc_getattr_2(struct nfs_fh *fh)
{
static struct attrstat res;
p_inode *inode = get_num(fh2inode(fh->data));
fattr *fp = &res.attrstat_u.attributes;
struct cache *cp;
long pattr;
long psize;
long ptime;
long dcount;
int builtin = 0;
int l;
debuglog("getattr:'%s',%d\n", inode->name, inode->inode);
res.status = NFS_OK;
if ((cp = search_cache(attrcache, inode->inode))) {
debuglog("getattr: cache hit\n");
*fp = cp->attr; /* gotcha */
if (fp->nlink > 0)
return &res;
}
l = strlen(inode->name);
if (inode->inode == root_fattr.fileid) {
/* It's the root inode */
debuglog("getattr:root inode (%#o)\n", root_fattr.mode);
if (query_devices()) /* root inode and proc is always there */
root_fattr.nlink = 3;
*fp = root_fattr;
} else if (l == 2 && inode->name[1] == ':') {
debuglog("getattr:device\n");
res.status = NO_PSION;
if (!query_devices()) {
device *dp;
for (dp = devices; dp; dp = dp->next) {
debuglog("cmp '%c', '%s'\n", dp->letter,
inode->name);
if (dp->letter == inode->name[0])
break;
}
debuglog("device: %s exists\n", (dp)?"":"not");
if (dp) {
res.status = NFS_OK;
*fp = root_fattr;
/* If it's writeable... */
if (dp->attrib != 7)
fp->mode |= 0200;
fp->fileid = inode->inode;
if (mp_dircount(inode, &dcount)) {
res.status = rfsv_isalive() ? NFSERR_NOENT : NO_PSION;
return &res;
}
if (fp->nlink != (dcount + 2))
fp->mtime.seconds = time(0);
fp->nlink = dcount + 2;
}
}
} else {
builtin_node *bn;
for (bn = builtins; bn; bn = bn->next) {
if (!strcmp(inode->name, builtin_path(bn))) {
pattr = bn->attr;
if (pattr & PSI_A_DIR)
psize = 0;
else
psize = (bn->getsize) ? bn->getsize(bn) : bn->size;
ptime = time(0);
res.status = NFS_OK;
builtin = 1;
if (bn->flags && BF_NOCACHE)
builtin++;
break;
}
}
if (!builtin) {
debuglog("getattr:fileordir\n");
/* It's a normal file/dir */
debuglog("RFSV getattr %s\n", inode->name);
if (rfsv_getattr(inode->name, &pattr, &psize, &ptime)) {
res.status = rfsv_isalive() ? NFSERR_NOENT : NO_PSION;
return &res;
}
}
pattr2attr(pattr, psize, ptime, fp, fh2inode((char *) fh->data));
if (fp->type == NFDIR) {
if (mp_dircount(inode, &dcount)) {
res.status = rfsv_isalive() ? NFSERR_NOENT : NO_PSION;
return &res;
}
if (fp->nlink != (dcount + 2))
fp->mtime.seconds = time(0);
fp->nlink = dcount + 2;
}
}
if (rfsv_isalive() && builtin < 2)
add_cache(&attrcache, inode->inode, fp);
return &res;
}
struct diropres *
nfsproc_lookup_2(diropargs *da)
{
static struct diropres res;
struct attrstat *gres;
p_inode *inode = get_num(fh2inode(da->dir.data));
char *fp = res.diropres_u.diropres.file.data;
if (!inode) {
debuglog("lookup: stale fh\n");
res.status = NO_PSION;
return &res;
}
debuglog("lookup: in '%s'(%d) searching '%s'\n",
inode->name, inode->inode, da->name);
if (!strcmp(da->name, "."))
inode2fh(fh2inode(da->dir.data), fp);
else if (!strcmp(da->name, ".."))
inode2fh(getpinode(inode), fp);
else
inode2fh(get_nam(build_path(inode->name, da->name))->inode, fp);
gres = nfsproc_getattr_2((struct nfs_fh *) fp);
res.status = gres->status;
res.diropres_u.diropres.attributes = gres->attrstat_u.attributes;
return &res;
}
#define RA_MAXCOUNT ~0
static void
addentry(readdirargs *ra, entry ***where, int *searchi, int inode, char *name)
{
int l, rndup;
if (*searchi) {
if (*searchi == inode)
*searchi = 0;
return;
}
if (ra->count == RA_MAXCOUNT)
return;
/*
* From ddan@au.stratus.com Wed Feb 8 04:14 MET 1995
* Modifed in pl7.a by Dan Danz to fix problem of missing files in readdir
*
* In a shotgun attempt at fixing this, I surmised that perhaps addentry
* was putting one too many entries in the result, so I increased
* the number of bytes for each entry by +8 ... my reasoning was that
* you need to account for the filename pointer and for the cookie int ...
* but in retrospect, I'm not sure about this reasoning. HOWEVER, it appears
* that this fixes the problem.
* FIXED: See next comment (Rudi)
*/
/*
* Count the bytes needed for the xdr encoded data. Xdr is trickier than
* one (me :-) might think: Xdr converts a string into
* length (4 bytes) + data (rounded up to 4 bytes).
*/
#define XDR_UNIT 4
l = strlen(name);
if ((rndup = l % XDR_UNIT) > 0)
l += XDR_UNIT - rndup;
l += XDR_UNIT; /* Length of name */
l += sizeof(entry);
if (l > ra->count) {
ra->count = RA_MAXCOUNT;
return;
}
ra->count -= l;
**where = (entry *) malloc(sizeof(entry));
(**where)->fileid = inode;
(**where)->name = (char *) strdup(name);
*(int *) (**where)->cookie = inode;
(**where)->nextentry = 0;
*where = &(**where)->nextentry;
}
struct readdirres *
nfsproc_readdir_2(readdirargs *ra)
{
static readdirres res;
p_inode *inode = get_num(fh2inode(ra->dir.data));
entry *centry, *fentry, **cp;
char *bp;
int searchinode;
if (!inode) {
debuglog("readdir: stale fh\n");
res.status = NO_PSION;
return &res;
}
cp = &res.readdirres_u.reply.entries;
for (fentry = *cp; fentry; fentry = centry) {
centry = fentry->nextentry;
free(fentry->name);
free(fentry);
}
*cp = 0;
searchinode = *(int *) ra->cookie;
debuglog("readdir: %s, cookie:%x, count:%d\n",
inode->name, searchinode, ra->count);
/* . & .. */
addentry(ra, &cp, &searchinode, inode->inode, ".");
addentry(ra, &cp, &searchinode, getpinode(inode), "..");
if (inode->inode == root_fattr.fileid) { /* Root directory */
device *dp;
addentry(ra, &cp, &searchinode, get_nam("/proc")->inode, "proc");
if (query_devices()) {
res.readdirres_u.reply.eof = ra->count == RA_MAXCOUNT ? 0 : 1;
res.status = NFS_OK;
debuglog("readdir: eof=%d\n", res.readdirres_u.reply.eof);
return &res;
}
for (dp = devices; dp; dp = dp->next) {
char n[3];
sprintf(n, "%c:", dp->letter);
addentry(ra, &cp, &searchinode, get_nam(dp->name)->inode, n);
}
} else {
builtin_node *bn;
int builtin = 0;
dentry *e = NULL;
debuglog("nfsdir: dir\n");
for (bn = builtins; bn ; bn = bn->next)
if (!strcmp(inode->name, builtin_path(bn))) {
if (bn->attr & PSI_A_DIR) {
if (bn->getdents)
bn->getdents(bn, &e);
builtin = 1;
} else {
res.status = NFSERR_NOTDIR;
return &res;
}
}
if (!builtin) {
debuglog("RFSV dir2 %s\n", inode->name);
if (rfsv_dir(dirname(inode->name), &e)) {
res.status = rfsv_isalive() ? NFSERR_NOENT : NO_PSION;
return &res;
}
}
while (e) {
fattr fp;
dentry *o;
int ni;
bp = filname(e->name);
ni = get_nam(build_path(inode->name, bp))->inode;
addentry(ra, &cp, &searchinode, ni, (char *) bp);
free(e->name);
pattr2attr(e->attr, e->size, e->time, &fp, ni);
if (rfsv_isalive())
add_cache(&attrcache, ni, &fp);
o = e;
e = e->next;
free(o);
}
}
res.readdirres_u.reply.eof = ra->count == RA_MAXCOUNT ? 0 : 1;
res.status = NFS_OK;
debuglog("readdir: eof=%d\n", res.readdirres_u.reply.eof);
return &res;
}
struct attrstat *
nfsproc_setattr_2(sattrargs *sa)
{
static struct attrstat res;
p_inode *inode = get_num(fh2inode(sa->file.data));
fattr *fp;
builtin_node *bn;
int builtin = 0;
if (!inode) {
debuglog("setattr: stale fh\n");
res.status = NO_PSION;
return &res;
}
debuglog("setattr %s called\n", inode->name);
res = *nfsproc_getattr_2(&sa->file);
if (res.status != NFS_OK)
return &res;
fp = &res.attrstat_u.attributes;
for (bn = builtins; bn; bn = bn->next)
if (!strcmp(inode->name, builtin_path(bn))) {
builtin = 1;
break;
}
if ((fp->type == NFREG) &&
(sa->attributes.size != -1) &&
(sa->attributes.size != fp->size)) {
debuglog("RFSV setsize %s %d\n", inode->name, sa->attributes.size);
if (builtin) {
if (bn->attr & PSI_A_RDONLY) {
res.status = NFSERR_ACCES;
return &res;
}
} else {
if (rfsv_setsize(inode->name, sa->attributes.size) != 0) {
// FIXME: more different error codes
res.status = rfsv_isalive() ? NFSERR_ROFS : NO_PSION;
return &res;
}
}
fp->size = sa->attributes.size;
rem_cache(&attrcache, inode->inode);
if (rfsv_isalive())
add_cache(&attrcache, inode->inode, fp);
}
if ((sa->attributes.mtime.seconds != fp->mtime.seconds) &&
(sa->attributes.mtime.seconds != -1) && !builtin) {
debuglog("RFSV setmtime %s %d\n", inode->name, sa->attributes.mtime.seconds);
if (rfsv_setmtime(inode->name, sa->attributes.mtime.seconds)) {
res.status = (rfsv_isalive()) ? NFSERR_ACCES : NO_PSION;
return &res;
}
fp->mtime.seconds = fp->atime.seconds = sa->attributes.mtime.seconds;
rem_cache(&attrcache, inode->inode);
if (rfsv_isalive())
add_cache(&attrcache, inode->inode, fp);
}
if ((sa->attributes.mode != fp->mode) &&
(sa->attributes.mode != -1)) {
long psisattr, psidattr;
attr2pattr(sa->attributes.mode, fp->mode, &psisattr, &psidattr);
debuglog("RFSV setattr %s %d %d\n", inode->name, psisattr, psidattr);
if (builtin) {
if ((bn->sattr == NULL) || bn->sattr(bn, psisattr, psidattr)) {
res.status = NFSERR_ACCES;
return &res;
}
} else {
if (rfsv_setattr(inode->name, psisattr, psidattr)) {
res.status = (rfsv_isalive()) ? NFSERR_ACCES : NO_PSION;
return &res;
}
}
fp->mode = sa->attributes.mode;
rem_cache(&attrcache, inode->inode);
if (rfsv_isalive() && !builtin)
add_cache(&attrcache, inode->inode, fp);
}
res.status = NFS_OK;
return &res;
}
static nfsstat *
remove_it(diropargs *da, int isdir)
{
static nfsstat res;
p_inode *inode = get_num(fh2inode(da->dir.data));
long rfsv_res;
if (!inode) {
debuglog("setattr: stale fh\n");
res = NO_PSION;
return &res;
}
debuglog("remove_it: in %s: %s (%d)\n", inode->name, da->name, isdir);
if (isdir) {
debuglog("RFSV rmdir %s\n", build_path(inode->name, da->name));
rfsv_res = rfsv_rmdir(build_path(inode->name, da->name));
} else {
debuglog("RFSV remove %s\n", build_path(inode->name, da->name));
rfsv_res = rfsv_remove(build_path(inode->name, da->name));
}
if (rfsv_res != 0) {
res = rfsv_isalive() ? NFSERR_ACCES : NO_PSION;
return &res;
}
rem_cache(&attrcache, inode->inode);
res = NFS_OK;
return &res;
}
nfsstat *
nfsproc_remove_2(diropargs *da)
{
return remove_it(da, 0);
}
nfsstat *
nfsproc_rmdir_2(diropargs *da)
{
return remove_it(da, 1);
}
nfsstat *
nfsproc_rename_2(renameargs *ra)
{
static nfsstat res;
p_inode *from = get_num(fh2inode(ra->from.dir.data));
p_inode *to = get_num(fh2inode(ra->to.dir.data));
char ldata[300], *old, c;
if (!from || !to) {
debuglog("rename: stale fh\n");
res = NO_PSION;
return &res;
}
strcpy(ldata + 1, build_path(to->name, ra->to.name));
*ldata = strlen(ldata + 1);
c = *ldata + 1;
old = build_path(from->name, ra->from.name);
res = NFS_OK;
debuglog("RFSV rename %s -> %s\n", old, ldata + 1);
if (rfsv_rename(old, ldata + 1)) {
res = (rfsv_isalive()) ? NFSERR_ACCES : NO_PSION;
return &res;
}
if (res == NFS_OK) {
/* Preserve inode */
strcpy((char *) ldata, build_path(to->name, ra->to.name));
(void) re_nam(build_path(from->name, ra->from.name), ldata);
}
rem_cache(&attrcache, from->inode);
rem_cache(&attrcache, to->inode);
return &res;
}
/* ARGSUSED */
struct statfsres *
nfsproc_statfs_2(struct nfs_fh *fh)
{
static statfsres res;
statfsokres *rp;
device *dp;
debuglog("statfs..\n");
rp = &res.statfsres_u.reply;
rp->tsize = PBUFSIZE;
rp->bsize = BLOCKSIZE;
rp->blocks = rp->bfree = 0;
res.status = NFS_OK;
if (query_devices()) {
/* Allow to mount it whithout the psion attached */
if (rfsv_isalive())
return &res; /* res.status = NO_PSION; Hmm */
}
for (dp = devices; dp; dp = dp->next) {
rp->blocks += (dp->total + BLOCKSIZE - 1) / BLOCKSIZE;
rp->bfree += (dp->free + BLOCKSIZE - 1) / BLOCKSIZE;
}
rp->bavail = rp->bfree;
return &res;
}
/*
* Problem:
* Since we are slow (Max 2Kbyte/s) and the biods are very impatient,
* we receive each request (number of biods + 1 for the kernel itself)
* times, this number can be lower for the last block. :-(
* Solution: (not the best, probably)
* Cache the read data. This cache will be invalidated if there are
* no more requests in the queue for at least XXX seconds.
* See also write :-(
*/
struct readres *
nfsproc_read_2(struct readargs *ra)
{
static struct readres res;
static unsigned char rop[NFS_MAXDATA];
p_inode *inode = get_num(fh2inode(ra->file.data));
fattr *fp;
struct cache *cp;
struct dcache *dcp;
long pattr;
long psize;
long ptime;
int len = 0;
builtin_node *bn;
int builtin = 0;
if (!inode) {
debuglog("read: stale fh\n");
res.status = NO_PSION;
return &res;
}
debuglog("read: %s off:%d count:%d\n", inode->name, ra->offset, ra->count);
cp = search_cache(attrcache, inode->inode);
if (cp && (dcp = search_dcache(cp, ra->offset, ra->count))) {
debuglog("read: dcache hit\n");
res.readres_u.reply.attributes = cp->attr;
bcopy(dcp->data, res.readres_u.reply.data.data_val, ra->count);
res.readres_u.reply.data.data_len = ra->count;
res.status = NFS_OK;
return &res;
}
debuglog("RFSV read %s\n", inode->name);
for (bn = builtins; bn; bn = bn->next) {
if (!strcmp(inode->name, builtin_path(bn))) {
if (bn->attr & PSI_A_DIR) {
res.status = NFSERR_ISDIR;
return &res;
}
if (bn->read) {
len = bn->read(bn, rop, ra->offset, ra->count);
builtin = 1;
break;
} else {
res.status = NFSERR_IO;
return &res;
}
}
}
if (!builtin) {
if (rfsv_read(rop, ra->offset,
ra->count, inode->name) < 0) {
res.status = rfsv_isalive() ? NFSERR_NOENT : NO_PSION;
return &res;
}
}
fp = &res.readres_u.reply.attributes;
if (!cp) {
// Problem: if an epoc process is enlarging the file, we wont recognize it
debuglog("RFSV getattr %s\n", inode->name);
if (builtin) {
pattr = bn->attr;
psize = (bn->getsize) ? bn->getsize(bn) : bn->size;
ptime = time(0);
} else
rfsv_getattr(inode->name, &pattr, &psize, &ptime);
pattr2attr(pattr, psize, ptime, fp, fh2inode((char *)ra->file.data));
cp = add_cache(&attrcache, inode->inode, fp);
} else {
*fp = cp->attr;
}
len = cp->actual_size - ra->offset;
if (len > ra->count)
len = ra->count;
if (cp->actual_size < ra->offset)
len = 0;
if (debug > 1)
debuglog("Read: filesize %d read %d @ %d\n", cp->actual_size, len, ra->offset);
if (len) {
dcp = add_dcache(cp, ra->offset, ra->count, rop);
dcp->towrite = 0; /* don't write it back */
}
if (builtin)
rem_cache(&attrcache, inode->inode);
res.readres_u.reply.data.data_len = len;
res.readres_u.reply.data.data_val = (char *) rop;
res.status = NFS_OK;
return &res;
}
/*
* Returns cachepointer on full hit, 0 on partial or no hit,
* see below solaris comment
*/
static int
addwritecache(struct cache *cp, int doff, int dlen, unsigned char *dp)
{
struct dcache *dcp;
int len, changed, os, oe;
unsigned char *pd, *pc;
/*
* do the cachesearch: we are interested in partial hits, as we don't
* want to write anything twice (flash ram)
*/
for (dcp = cp->dcache; dcp; dcp = dcp->next)
if (doff < dcp->offset + dcp->len && doff + dlen > dcp->offset)
break;
if (!dcp) {
/* phew, nothing fancy to do */
add_dcache(cp, doff, dlen, dp);
return 0;
}
os = doff > dcp->offset ? doff : dcp->offset;
oe = doff + dlen < dcp->offset + dcp->len ? doff + dlen : dcp->offset + dcp->len;
pd = dp + os - doff;
pc = dcp->data + os - dcp->offset;
len = oe - os;
changed = 0;
if (bcmp(pd, pc, len)) {
bcopy(pd, pc, len);
dcp->towrite = 1;
changed = 1;
}
if (doff >= dcp->offset && doff + dlen <= dcp->offset + dcp->len) {
debuglog("write: full cache hit\n");
return !changed;
}
debuglog("write: partial cache hit (off %d len %d)\n", dcp->offset, dcp->len);
/* Do we have some data below the cached area... */
if (doff < dcp->offset)
(void) addwritecache(cp, doff, dcp->offset - doff, dp);
/* ...or some above? */
len = (doff + dlen) - (dcp->offset + dcp->len);
if (len > 0)
(void) addwritecache(cp, dcp->offset + dcp->len, len, dp + dlen - len);
return 0;
}
/*
* The same problem here as above: we receive numerous requests,
* not even in a specified order. The only good thing is that each request
* up to the last is exactly the same size.
* A new problem:
* Since I dunno how to seek to a point beyond the end of the file (psion),
* I can't sopport the exact semantics of write. Such files will never be
* written completely. :-(
*
* Another dumb solaris (sysv?) problem: if the client is writing 512 byte
* blocks we receive following write requests:
* off 0 len 512, off 0 len 1024, off 0 len 1536, ... so on till len 4096,
* that means 4 times as much data as actually needed.
* We should check if the block was partially written, and write only the
* difference
*/
struct attrstat *
nfsproc_write_2(writeargs *wa)
{
static struct attrstat res;
p_inode *inode = get_num(fh2inode(wa->file.data));
struct cache *cp;
struct dcache *dcp;
fattr *fp;
struct attrstat *gres;
int len = 0;
int dlen, doff;
builtin_node *bn;
if (!inode) {
debuglog("write: stale fh\n");
res.status = NO_PSION;
return &res;
}
debuglog("write:%s off:%d l:%d\n", inode->name, wa->offset, wa->data.data_len);
dlen = wa->data.data_len;
doff = wa->offset;
for (bn = builtins; bn ; bn = bn->next) {
if (!strcmp(inode->name, builtin_path(bn))) {
if (bn->attr & PSI_A_DIR)
res.status = NFSERR_ISDIR;
else {
debuglog("builtin write %s %d@%d\n", inode->name, dlen, doff);
if (bn->write) {
int l = bn->write(bn, (unsigned char *)wa->data.data_val, doff, dlen);
res.status = (l == dlen) ? NFS_OK : NFSERR_IO;
} else
res.status = NFSERR_ACCES;
}
return &res;
}
}
/* fetch attributes */
if ((cp = search_cache(attrcache, inode->inode)) == 0) {
gres = nfsproc_getattr_2((struct nfs_fh *) wa->file.data);
if (gres->status != NFS_OK) {
res.status = gres->status;
return &res;
}
cp = search_cache(attrcache, inode->inode);
if (!cp) {
errorlog("nfsproc_write_2: cache is NULL\n");
res.status = NFSERR_IO;
return &res;
}
}
fp = &cp->attr;
if (fp->size < doff + dlen)
fp->size = doff + dlen;
fp->blocks = (fp->size + (BLOCKSIZE - 1)) / BLOCKSIZE;
fp->atime.seconds = fp->mtime.seconds = fp->ctime.seconds = time(0);
res.attrstat_u.attributes = *fp;
if (addwritecache(cp, doff, dlen, (unsigned char *) wa->data.data_val)) {
res.status = NFS_OK;
return &res;
}
/* Write out as many blocks from the cache as we can */
for (;;) {
if (debug > 2)
for (dcp = cp->dcache; dcp; dcp = dcp->next)
debuglog("Check: %d=%d,%d,%d>=%d\n",
inode->inode, cp->inode, dcp->towrite,
cp->actual_size, dcp->offset);
for (dcp = cp->dcache; dcp; dcp = dcp->next)
if (dcp->towrite && cp->actual_size >= dcp->offset)
break;
if (!dcp) /* Can't write any blocks */
break;
debuglog("writing off: %d, len: %d, act: %d\n",
dcp->offset, dcp->len, cp->actual_size);
debuglog("RFSV write %s\n", inode->name);
if (rfsv_write(dcp->data, dcp->offset, dcp->len, inode->name) != dcp->len) {
debuglog("write: dump failed\n");
res.status = rfsv_isalive() ? NFSERR_NOSPC : NO_PSION;
return &res;
}
dcp->towrite = 0;
len = dcp->offset + dcp->len;
if (len > cp->actual_size)
cp->actual_size = len;
debuglog("written: new length: %d\n", cp->actual_size);
}
debuglog("write -> ISOK (%d, %d %d)\n",
res.attrstat_u.attributes.size,
res.attrstat_u.attributes.fileid,
res.attrstat_u.attributes.fsid);
res.status = NFS_OK;
return &res;
}
/* Dummy routines */
void *
nfsproc_writecache_2()
{
static char res;
debuglog("writecache???\n");
res = (char) NFSERR_FBIG;
return (void *) &res;
}
void *
nfsproc_null_2()
{
static char res;
debuglog("null.\n");
res = (char) NFSERR_FBIG;
return (void *) &res;
}
void *
nfsproc_root_2()
{
static char res;
debuglog("root????\n");
res = (char) NFSERR_FBIG;
return (void *) &res;
}
/*
* Links and symlinks are not supported on Psion
*/
/* ARGSUSED */
nfsstat *
nfsproc_link_2(linkargs *la)
{
static nfsstat res;
debuglog("link..\n");
res = NFSERR_ACCES;
return &res;
}
/* ARGSUSED */
struct readlinkres *
nfsproc_readlink_2(struct nfs_fh *fh)
{
static readlinkres res;
debuglog("readlink...\n");
res.status = NFSERR_ACCES;
return &res;
}
/* ARGSUSED */
nfsstat *
nfsproc_symlink_2(symlinkargs *sa)
{
static nfsstat res;
debuglog("symlink..\n");
res = NFSERR_ACCES;
return &res;
}
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