*/
static int cache_export_ent(char *domain, struct exportent *exp, char *p);
+#define INITIAL_MANAGED_GROUPS 100
char *lbuf = NULL;
int lbuflen = 0;
qword_print(f, "nfsd");
qword_print(f, ipaddr);
- qword_printint(f, time(0)+30*60);
+ qword_printuint(f, time(0) + DEFAULT_TTL);
if (use_ipaddr)
qword_print(f, ipaddr);
else if (client)
*/
uid_t uid;
struct passwd *pw;
- gid_t glist[100], *groups = glist;
- int ngroups = 100;
+ static gid_t *groups = NULL;
+ static int groups_len = 0;
+ gid_t *more_groups;
+ int ngroups;
int rv, i;
char *cp;
+ if (groups_len == 0) {
+ groups = malloc(sizeof(gid_t) * INITIAL_MANAGED_GROUPS);
+ if (!groups)
+ return;
+
+ groups_len = INITIAL_MANAGED_GROUPS;
+ }
+
+ ngroups = groups_len;
+
if (readline(fileno(f), &lbuf, &lbuflen) != 1)
return;
rv = -1;
else {
rv = getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups);
- if (rv == -1 && ngroups >= 100) {
- groups = malloc(sizeof(gid_t)*ngroups);
- if (!groups)
+ if (rv == -1 && ngroups >= groups_len) {
+ more_groups = realloc(groups, sizeof(gid_t)*ngroups);
+ if (!more_groups)
rv = -1;
- else
+ else {
+ groups = more_groups;
+ groups_len = ngroups;
rv = getgrouplist(pw->pw_name, pw->pw_gid,
groups, &ngroups);
+ }
}
}
qword_printuint(f, uid);
- qword_printuint(f, time(0)+30*60);
+ qword_printuint(f, time(0) + DEFAULT_TTL);
if (rv >= 0) {
qword_printuint(f, ngroups);
for (i=0; i<ngroups; i++)
} else
qword_printuint(f, 0);
qword_eol(f);
-
- if (groups != glist)
- free(groups);
}
#if USE_BLKID
return me->mnt_dir;
}
-static void nfsd_fh(FILE *f)
+/* True iff e1 is a child of e2 and e2 has crossmnt set: */
+static bool subexport(struct exportent *e1, struct exportent *e2)
{
- /* request are:
- * domain fsidtype fsid
- * interpret fsid, find export point and options, and write:
- * domain fsidtype fsid expiry path
- */
- char *cp;
- char *dom;
- int fsidtype;
- int fsidlen;
- unsigned int dev, major=0, minor=0;
- unsigned int inode=0;
- unsigned long long inode64;
- unsigned int fsidnum=0;
- char fsid[32];
- struct exportent *found = NULL;
- struct addrinfo *ai = NULL;
- char *found_path = NULL;
- nfs_export *exp;
- int i;
- int dev_missing = 0;
- int uuidlen = 0;
- char *fhuuid = NULL;
+ char *p1 = e1->e_path, *p2 = e2->e_path;
+ int l2 = strlen(p2);
- if (readline(fileno(f), &lbuf, &lbuflen) != 1)
- return;
+ return e2->e_flags & NFSEXP_CROSSMOUNT
+ && strncmp(p1, p2, l2) == 0
+ && p1[l2] == '/';
+}
- xlog(D_CALL, "nfsd_fh: inbuf '%s'", lbuf);
+struct parsed_fsid {
+ int fsidtype;
+ /* We could use a union for this, but it would be more
+ * complicated; why bother? */
+ unsigned int inode;
+ unsigned int minor;
+ unsigned int major;
+ unsigned int fsidnum;
+ int uuidlen;
+ char *fhuuid;
+};
- cp = lbuf;
-
- dom = malloc(strlen(cp));
- if (dom == NULL)
- return;
- if (qword_get(&cp, dom, strlen(cp)) <= 0)
- goto out;
- if (qword_get_int(&cp, &fsidtype) != 0)
- goto out;
- if (fsidtype < 0 || fsidtype > 7)
- goto out; /* unknown type */
- if ((fsidlen = qword_get(&cp, fsid, 32)) <= 0)
- goto out;
+int parse_fsid(int fsidtype, int fsidlen, char *fsid, struct parsed_fsid *parsed)
+{
+ unsigned int dev;
+ unsigned long long inode64;
+
+ parsed->fsidtype = fsidtype;
switch(fsidtype) {
case FSID_DEV: /* 4 bytes: 2 major, 2 minor, 4 inode */
if (fsidlen != 8)
- goto out;
+ return -1;
memcpy(&dev, fsid, 4);
- memcpy(&inode, fsid+4, 4);
- major = ntohl(dev)>>16;
- minor = ntohl(dev) & 0xFFFF;
+ memcpy(&parsed->inode, fsid+4, 4);
+ parsed->major = ntohl(dev)>>16;
+ parsed->minor = ntohl(dev) & 0xFFFF;
break;
case FSID_NUM: /* 4 bytes - fsid */
if (fsidlen != 4)
- goto out;
- memcpy(&fsidnum, fsid, 4);
+ return -1;
+ memcpy(&parsed->fsidnum, fsid, 4);
break;
case FSID_MAJOR_MINOR: /* 12 bytes: 4 major, 4 minor, 4 inode
* an historical accident
*/
if (fsidlen != 12)
- goto out;
- memcpy(&dev, fsid, 4); major = ntohl(dev);
- memcpy(&dev, fsid+4, 4); minor = ntohl(dev);
- memcpy(&inode, fsid+8, 4);
+ return -1;
+ memcpy(&dev, fsid, 4);
+ parsed->major = ntohl(dev);
+ memcpy(&dev, fsid+4, 4);
+ parsed->minor = ntohl(dev);
+ memcpy(&parsed->inode, fsid+8, 4);
break;
case FSID_ENCODE_DEV: /* 8 bytes: 4 byte packed device number, 4 inode */
* no-one outside this host has any business interpreting it
*/
if (fsidlen != 8)
- goto out;
+ return -1;
memcpy(&dev, fsid, 4);
- memcpy(&inode, fsid+4, 4);
- major = (dev & 0xfff00) >> 8;
- minor = (dev & 0xff) | ((dev >> 12) & 0xfff00);
+ memcpy(&parsed->inode, fsid+4, 4);
+ parsed->major = (dev & 0xfff00) >> 8;
+ parsed->minor = (dev & 0xff) | ((dev >> 12) & 0xfff00);
break;
case FSID_UUID4_INUM: /* 4 byte inode number and 4 byte uuid */
if (fsidlen != 8)
- goto out;
- memcpy(&inode, fsid, 4);
- uuidlen = 4;
- fhuuid = fsid+4;
+ return -1;
+ memcpy(&parsed->inode, fsid, 4);
+ parsed->uuidlen = 4;
+ parsed->fhuuid = fsid+4;
break;
case FSID_UUID8: /* 8 byte uuid */
if (fsidlen != 8)
- goto out;
- uuidlen = 8;
- fhuuid = fsid;
+ return -1;
+ parsed->uuidlen = 8;
+ parsed->fhuuid = fsid;
break;
case FSID_UUID16: /* 16 byte uuid */
if (fsidlen != 16)
- goto out;
- uuidlen = 16;
- fhuuid = fsid;
+ return -1;
+ parsed->uuidlen = 16;
+ parsed->fhuuid = fsid;
break;
case FSID_UUID16_INUM: /* 8 byte inode number and 16 byte uuid */
if (fsidlen != 24)
- goto out;
+ return -1;
memcpy(&inode64, fsid, 8);
- inode = inode64;
- uuidlen = 16;
- fhuuid = fsid+8;
+ parsed->inode = inode64;
+ parsed->uuidlen = 16;
+ parsed->fhuuid = fsid+8;
break;
}
+ return 0;
+}
+
+static bool match_fsid(struct parsed_fsid *parsed, nfs_export *exp, char *path)
+{
+ struct stat stb;
+ int type;
+ char u[16];
+
+ if (stat(path, &stb) != 0)
+ return false;
+ if (!S_ISDIR(stb.st_mode) && !S_ISREG(stb.st_mode))
+ return false;
+
+ switch (parsed->fsidtype) {
+ case FSID_DEV:
+ case FSID_MAJOR_MINOR:
+ case FSID_ENCODE_DEV:
+ if (stb.st_ino != parsed->inode)
+ return false;
+ if (parsed->major != major(stb.st_dev) ||
+ parsed->minor != minor(stb.st_dev))
+ return false;
+ return true;
+ case FSID_NUM:
+ if (((exp->m_export.e_flags & NFSEXP_FSID) == 0 ||
+ exp->m_export.e_fsid != parsed->fsidnum))
+ return false;
+ return true;
+ case FSID_UUID4_INUM:
+ case FSID_UUID16_INUM:
+ if (stb.st_ino != parsed->inode)
+ return false;
+ goto check_uuid;
+ case FSID_UUID8:
+ case FSID_UUID16:
+ if (!is_mountpoint(path))
+ return false;
+ check_uuid:
+ if (exp->m_export.e_uuid)
+ get_uuid(exp->m_export.e_uuid, parsed->uuidlen, u);
+ else
+ for (type = 0;
+ uuid_by_path(path, type, parsed->uuidlen, u);
+ type++)
+ if (memcmp(u, parsed->fhuuid, parsed->uuidlen) == 0)
+ return true;
+
+ if (memcmp(u, parsed->fhuuid, parsed->uuidlen) != 0)
+ return false;
+ return true;
+ }
+ /* Well, unreachable, actually: */
+ return false;
+}
+
+static void nfsd_fh(FILE *f)
+{
+ /* request are:
+ * domain fsidtype fsid
+ * interpret fsid, find export point and options, and write:
+ * domain fsidtype fsid expiry path
+ */
+ char *cp;
+ char *dom;
+ int fsidtype;
+ int fsidlen;
+ char fsid[32];
+ struct parsed_fsid parsed;
+ struct exportent *found = NULL;
+ struct addrinfo *ai = NULL;
+ char *found_path = NULL;
+ nfs_export *exp;
+ int i;
+ int dev_missing = 0;
+
+ if (readline(fileno(f), &lbuf, &lbuflen) != 1)
+ return;
+
+ xlog(D_CALL, "nfsd_fh: inbuf '%s'", lbuf);
+
+ cp = lbuf;
+
+ dom = malloc(strlen(cp));
+ if (dom == NULL)
+ return;
+ if (qword_get(&cp, dom, strlen(cp)) <= 0)
+ goto out;
+ if (qword_get_int(&cp, &fsidtype) != 0)
+ goto out;
+ if (fsidtype < 0 || fsidtype > 7)
+ goto out; /* unknown type */
+ if ((fsidlen = qword_get(&cp, fsid, 32)) <= 0)
+ goto out;
+ if (parse_fsid(fsidtype, fsidlen, fsid, &parsed))
+ goto out;
auth_reload();
for (i=0 ; i < MCL_MAXTYPES; i++) {
nfs_export *next_exp;
for (exp = exportlist[i].p_head; exp; exp = next_exp) {
- struct stat stb;
- char u[16];
char *path;
- int type;
if (exp->m_export.e_flags & NFSEXP_CROSSMOUNT) {
static nfs_export *prev = NULL;
exp->m_export.e_mountpoint:
exp->m_export.e_path))
dev_missing ++;
- if (stat(path, &stb) != 0)
- continue;
- if (!S_ISDIR(stb.st_mode) && !S_ISREG(stb.st_mode)) {
+
+ if (!match_fsid(&parsed, exp, path))
continue;
- }
- switch(fsidtype){
- case FSID_DEV:
- case FSID_MAJOR_MINOR:
- case FSID_ENCODE_DEV:
- if (stb.st_ino != inode)
- continue;
- if (major != major(stb.st_dev) ||
- minor != minor(stb.st_dev))
- continue;
- break;
- case FSID_NUM:
- if (((exp->m_export.e_flags & NFSEXP_FSID) == 0 ||
- exp->m_export.e_fsid != fsidnum))
- continue;
- break;
- case FSID_UUID4_INUM:
- case FSID_UUID16_INUM:
- if (stb.st_ino != inode)
- continue;
- goto check_uuid;
- case FSID_UUID8:
- case FSID_UUID16:
- if (!is_mountpoint(path))
- continue;
- check_uuid:
- if (exp->m_export.e_uuid)
- get_uuid(exp->m_export.e_uuid,
- uuidlen, u);
- else
- for (type = 0;
- uuid_by_path(path, type, uuidlen, u);
- type++)
- if (memcmp(u, fhuuid, uuidlen) == 0)
- break;
-
- if (memcmp(u, fhuuid, uuidlen) != 0)
- continue;
- break;
- }
if (use_ipaddr) {
if (ai == NULL) {
struct addrinfo *tmp;
if (!client_check(exp->m_client, ai))
continue;
}
- /* It's a match !! */
- if (!found) {
+ if (!found || subexport(&exp->m_export, found)) {
found = &exp->m_export;
+ free(found_path);
found_path = strdup(path);
if (found_path == NULL)
goto out;
- } else if (strcmp(found->e_path, exp->m_export.e_path)!= 0)
+ } else if (strcmp(found->e_path, exp->m_export.e_path)
+ && !subexport(found, &exp->m_export))
{
xlog(L_WARNING, "%s and %s have same filehandle for %s, using first",
found_path, path, dom);
{
qword_print(f, domain);
qword_print(f, path);
- qword_printint(f, time(0)+30*60);
if (exp) {
int different_fs = strcmp(path, exp->e_path) != 0;
int flag_mask = different_fs ? ~NFSEXP_FSID : ~0;
+ qword_printuint(f, time(0) + exp->e_ttl);
qword_printint(f, exp->e_flags & flag_mask);
qword_printint(f, exp->e_anonuid);
qword_printint(f, exp->e_anongid);
qword_print(f, "uuid");
qword_printhex(f, u, 16);
}
- }
+ } else
+ qword_printuint(f, time(0) + DEFAULT_TTL);
return qword_eol(f);
}
char *cache_name;
void (*cache_handle)(FILE *f);
FILE *f;
+ char vbuf[RPC_CHAN_BUF_SIZE];
} cachelist[] = {
- { "auth.unix.ip", auth_unix_ip, NULL},
- { "auth.unix.gid", auth_unix_gid, NULL},
- { "nfsd.export", nfsd_export, NULL},
- { "nfsd.fh", nfsd_fh, NULL},
- { NULL, NULL, NULL }
+ { "auth.unix.ip", auth_unix_ip, NULL, ""},
+ { "auth.unix.gid", auth_unix_gid, NULL, ""},
+ { "nfsd.export", nfsd_export, NULL, ""},
+ { "nfsd.fh", nfsd_fh, NULL, ""},
+ { NULL, NULL, NULL, ""}
};
extern int manage_gids;
continue;
sprintf(path, "/proc/net/rpc/%s/channel", cachelist[i].cache_name);
cachelist[i].f = fopen(path, "r+");
+ if (cachelist[i].f != NULL) {
+ setvbuf(cachelist[i].f, cachelist[i].vbuf, _IOLBF,
+ RPC_CHAN_BUF_SIZE);
+ }
}
}
/*
* Give IP->domain and domain+path->options to kernel
- * % echo nfsd $IP $[now+30*60] $domain > /proc/net/rpc/auth.unix.ip/channel
- * % echo $domain $path $[now+30*60] $options $anonuid $anongid $fsid > /proc/net/rpc/nfsd.export/channel
+ * % echo nfsd $IP $[now+DEFAULT_TTL] $domain > /proc/net/rpc/auth.unix.ip/channel
+ * % echo $domain $path $[now+DEFAULT_TTL] $options $anonuid $anongid $fsid > /proc/net/rpc/nfsd.export/channel
*/
static int cache_export_ent(char *domain, struct exportent *exp, char *path)
qword_print(f, "nfsd");
qword_print(f,
host_ntop(get_addrlist(exp->m_client, 0), buf, sizeof(buf)));
- qword_printint(f, time(0)+30*60);
+ qword_printuint(f, time(0) + exp->m_export.e_ttl);
qword_print(f, exp->m_client->m_hostname);
err = qword_eol(f);
projects / nfs-utils.git / blobdiff