ssize_t
npc_listxattr (Npcfid *root, char *path, char *buf, size_t size)
{
Npcfid *fid = NULL;
Npcfid *attrfid = NULL;
ssize_t ret = -1;
size_t n, tot;
if (!(fid = npc_walk (root, path)))
goto done;
if (!(attrfid = npc_fid_alloc(fid->fsys)))
goto done;
ret = npc_xattrwalk (fid, attrfid, NULL);
if (ret < 0)
goto done;
if (buf == NULL || size == 0)
goto done;
if (ret > size) {
np_uerror (ERANGE);
goto done;
}
for (tot = 0; tot < size; ) {
n = npc_read (attrfid, buf + tot, size - tot);
if (n <= 0)
break;
tot += n;
}
ret = tot;
done:
if (fid)
(void)npc_clunk (fid);
if (attrfid)
(void)npc_clunk (attrfid);
return ret;
}
char *
npc_aget(Npcfid *root, char *path)
{
int n, len;
Npcfid *fid = NULL;
char *s = NULL;;
int ssize = 0;
if (!(fid = npc_open_bypath(root, path, O_RDONLY)))
goto error;
len = 0;
do {
if (!s) {
ssize = AGET_CHUNK;
s = malloc (ssize);
} else if (ssize - len == 1) {
ssize += AGET_CHUNK;
s = realloc (s, ssize);
}
if (!s) {
np_uerror (ENOMEM);
goto error;
}
n = npc_read(fid, s + len, ssize - len - 1);
if (n > 0) {
len += n;
if ((fid->fsys->flags & NPC_SHORTREAD_EOF)
&& (len - n < ssize - len - 1))
break;
}
} while (n > 0);
if (n < 0)
goto error;
if (npc_clunk (fid) < 0)
goto error;
s[len] = '\0';
return s;
error:
if (s)
free (s);
if (fid)
(void)npc_clunk (fid);
return NULL;
}
int
npc_get(Npcfid *root, char *path, void *buf, u32 count)
{
int n, len = 0;
Npcfid *fid;
if (!(fid = npc_open_bypath(root, path, O_RDONLY)))
return -1;
while (len < count) {
n = npc_read(fid, buf + len, count - len);
if (n < 0)
return -1;
if (n == 0)
break;
len += n;
if ((fid->fsys->flags & NPC_SHORTREAD_EOF)
&& (len - n < count - len))
break;
}
if (npc_clunk (fid) < 0)
return -1;
return len;
}
int
main(int argc, char **argv)
{
int sfd, i, n, off;
int c, port;
char *addr, *s;
char *uname, *path;
Npuser *user;
Npcfsys *fs;
Npcfid *fid;
struct sockaddr_in saddr;
struct hostent *hostinfo;
char buf[512];
port = 564;
// npc_chatty = 1;
user = np_uid2user(geteuid());
if (!user) {
fprintf(stderr, "cannot retrieve user %d\n", geteuid());
exit(1);
}
uname = user->uname;
while ((c = getopt(argc, argv, "dp:")) != -1) {
switch (c) {
case 'd':
npc_chatty = 1;
break;
case 'p':
port = strtol(optarg, &s, 10);
if (*s != '\0')
usage();
break;
case 'u':
uname = optarg;
break;
default:
usage();
}
}
if (argc - optind < 2)
usage();
addr = argv[optind];
path = argv[optind+1];
sfd = socket(PF_INET, SOCK_STREAM, 0);
if (sfd < 0) {
perror("socket");
exit(1);
}
hostinfo = gethostbyname (addr);
if (!hostinfo) {
perror("gethostbyname");
exit(1);
}
saddr.sin_family = AF_INET;
saddr.sin_port = htons(port);
saddr.sin_addr = *(struct in_addr *) hostinfo->h_addr;
if (connect(sfd, (struct sockaddr *) &saddr, sizeof(saddr)) < 0) {
perror("connect");
exit(1);
}
fs = npc_mount(sfd, NULL, "lucho");
fid = npc_open(fs, path, Oread);
if (!fid) {
fprintf(stderr, "cannot open\n");
exit(1);
}
off = 0;
while ((n = npc_read(fid, (u8*) buf, sizeof(buf), off)) > 0) {
i = write(1, buf, n);
if (i != n) {
fprintf(stderr, "error writing\n");
exit(1);
}
off += n;
}
npc_close(fid);
npc_umount(fs);
exit(0);
}
int
npc_dirread(Npcfid *fid, Npwstat **statpp)
{
int i, n, m, buflen, statsz, slen, count;
u8 *buf;
char *sbuf;
Npstat stat;
Npwstat *statp;
buflen = fid->fsys->msize - IOHDRSZ;
buf = malloc(buflen);
if (!buf)
return -1;
n = npc_read(fid, buf, buflen, fid->offset);
if (n < 0) {
free(buf);
return n;
}
fid->offset += n;
count = 0;
i = 0;
slen = 0;
while (i < n) {
statsz = np_deserialize_stat(&stat, buf + i, buflen - i, fid->fsys->dotu);
if (!statsz) {
np_werror("stat error", EIO);
free(buf);
return -1;
}
count++;
slen += npc_wstatlen(&stat);
i += statsz;
}
statp = malloc(slen);
if (!statp) {
np_werror(Ennomem, ENOMEM);
free(buf);
}
sbuf = ((char *) statp) + count * sizeof(Npwstat);
i = 0;
m = 0;
while (i < n) {
statsz = np_deserialize_stat(&stat, buf + i, buflen - i, fid->fsys->dotu);
if (!statsz)
break;
npc_stat2wstat(&stat, &statp[m], &sbuf);
m++;
i += statsz;
}
free(buf);
*statpp = statp;
return count;
}
