/****************************************
- * lnet support routine *
- * (from lnet/libcfs/nidstrings.c *
- ****************************************/
-
-#define LNET_NIDSTR_SIZE 32 /* size of each one (see below for usage) */
-
-static int libcfs_lo_str2addr(char *str, int nob, uint32_t *addr);
-static void libcfs_ip_addr2str(uint32_t addr, char *str);
-static int libcfs_ip_str2addr(char *str, int nob, uint32_t *addr);
-static void libcfs_decnum_addr2str(uint32_t addr, char *str);
-static void libcfs_hexnum_addr2str(uint32_t addr, char *str);
-static int libcfs_num_str2addr(char *str, int nob, uint32_t *addr);
-
-struct netstrfns {
- int nf_type;
- char *nf_name;
- char *nf_modname;
- void (*nf_addr2str)(uint32_t addr, char *str);
- int (*nf_str2addr)(char *str, int nob, uint32_t *addr);
-};
-
-static struct netstrfns libcfs_netstrfns[] = {
- {/* .nf_type */ LOLND,
- /* .nf_name */ "lo",
- /* .nf_modname */ "klolnd",
- /* .nf_addr2str */ libcfs_decnum_addr2str,
- /* .nf_str2addr */ libcfs_lo_str2addr},
- {/* .nf_type */ SOCKLND,
- /* .nf_name */ "tcp",
- /* .nf_modname */ "ksocklnd",
- /* .nf_addr2str */ libcfs_ip_addr2str,
- /* .nf_str2addr */ libcfs_ip_str2addr},
- {/* .nf_type */ O2IBLND,
- /* .nf_name */ "o2ib",
- /* .nf_modname */ "ko2iblnd",
- /* .nf_addr2str */ libcfs_ip_addr2str,
- /* .nf_str2addr */ libcfs_ip_str2addr},
- {/* .nf_type */ CIBLND,
- /* .nf_name */ "cib",
- /* .nf_modname */ "kciblnd",
- /* .nf_addr2str */ libcfs_ip_addr2str,
- /* .nf_str2addr */ libcfs_ip_str2addr},
- {/* .nf_type */ OPENIBLND,
- /* .nf_name */ "openib",
- /* .nf_modname */ "kopeniblnd",
- /* .nf_addr2str */ libcfs_ip_addr2str,
- /* .nf_str2addr */ libcfs_ip_str2addr},
- {/* .nf_type */ IIBLND,
- /* .nf_name */ "iib",
- /* .nf_modname */ "kiiblnd",
- /* .nf_addr2str */ libcfs_ip_addr2str,
- /* .nf_str2addr */ libcfs_ip_str2addr},
- {/* .nf_type */ VIBLND,
- /* .nf_name */ "vib",
- /* .nf_modname */ "kviblnd",
- /* .nf_addr2str */ libcfs_ip_addr2str,
- /* .nf_str2addr */ libcfs_ip_str2addr},
- {/* .nf_type */ RALND,
- /* .nf_name */ "ra",
- /* .nf_modname */ "kralnd",
- /* .nf_addr2str */ libcfs_ip_addr2str,
- /* .nf_str2addr */ libcfs_ip_str2addr},
- {/* .nf_type */ QSWLND,
- /* .nf_name */ "elan",
- /* .nf_modname */ "kqswlnd",
- /* .nf_addr2str */ libcfs_decnum_addr2str,
- /* .nf_str2addr */ libcfs_num_str2addr},
- {/* .nf_type */ GMLND,
- /* .nf_name */ "gm",
- /* .nf_modname */ "kgmlnd",
- /* .nf_addr2str */ libcfs_hexnum_addr2str,
- /* .nf_str2addr */ libcfs_num_str2addr},
- {/* .nf_type */ PTLLND,
- /* .nf_name */ "ptl",
- /* .nf_modname */ "kptllnd",
- /* .nf_addr2str */ libcfs_decnum_addr2str,
- /* .nf_str2addr */ libcfs_num_str2addr},
- /* placeholder for net0 alias. It MUST BE THE LAST ENTRY */
- {/* .nf_type */ -1},
-};
-
-const int libcfs_nnetstrfns = sizeof(libcfs_netstrfns)/sizeof(libcfs_netstrfns[0]);
-
-static int
-libcfs_lo_str2addr(char *str, int nob, uint32_t *addr)
-{
- *addr = 0;
- return 1;
-}
-
-static void
-libcfs_ip_addr2str(uint32_t addr, char *str)
-{
- snprintf(str, LNET_NIDSTR_SIZE, "%u.%u.%u.%u",
- (addr >> 24) & 0xff, (addr >> 16) & 0xff,
- (addr >> 8) & 0xff, addr & 0xff);
-}
-
-/* CAVEAT EMPTOR XscanfX
- * I use "%n" at the end of a sscanf format to detect trailing junk. However
- * sscanf may return immediately if it sees the terminating '0' in a string, so
- * I initialise the %n variable to the expected length. If sscanf sets it;
- * fine, if it doesn't, then the scan ended at the end of the string, which is
- * fine too :) */
-
-static int
-libcfs_ip_str2addr(char *str, int nob, uint32_t *addr)
-{
- int a;
- int b;
- int c;
- int d;
- int n = nob; /* XscanfX */
-
- /* numeric IP? */
- if (sscanf(str, "%u.%u.%u.%u%n", &a, &b, &c, &d, &n) >= 4 &&
- n == nob &&
- (a & ~0xff) == 0 && (b & ~0xff) == 0 &&
- (c & ~0xff) == 0 && (d & ~0xff) == 0) {
- *addr = ((a<<24)|(b<<16)|(c<<8)|d);
- return 1;
- }
-
-#ifdef HAVE_GETHOSTBYNAME
- /* known hostname? */
- if (('a' <= str[0] && str[0] <= 'z') ||
- ('A' <= str[0] && str[0] <= 'Z')) {
- char *tmp;
-
- tmp = malloc(nob + 1);
- if (tmp != NULL) {
- struct hostent *he;
-
- memcpy(tmp, str, nob);
- tmp[nob] = 0;
-
- he = gethostbyname(tmp);
-
- free(tmp);
- tmp = NULL;
-
- if (he != NULL) {
- uint32_t ip = *(uint32_t *)he->h_addr;
-
- *addr = ntohl(ip);
- return 1;
- }
- }
- }
-#endif
- return 0;
-}
-
-static void
-libcfs_decnum_addr2str(uint32_t addr, char *str)
-{
- snprintf(str, LNET_NIDSTR_SIZE, "%u", addr);
-}
-
-static void
-libcfs_hexnum_addr2str(uint32_t addr, char *str)
-{
- snprintf(str, LNET_NIDSTR_SIZE, "0x%x", addr);
-}
-
-static int
-libcfs_num_str2addr(char *str, int nob, uint32_t *addr)
-{
- int n;
-
- n = nob;
- if (sscanf(str, "0x%x%n", addr, &n) >= 1 && n == nob)
- return 1;
-
- n = nob;
- if (sscanf(str, "0X%x%n", addr, &n) >= 1 && n == nob)
- return 1;
-
- n = nob;
- if (sscanf(str, "%u%n", addr, &n) >= 1 && n == nob)
- return 1;
-
- return 0;
-}
-
-static struct netstrfns *
-libcfs_lnd2netstrfns(int lnd)
-{
- int i;
-
- if (lnd >= 0)
- for (i = 0; i < libcfs_nnetstrfns; i++)
- if (lnd == libcfs_netstrfns[i].nf_type)
- return &libcfs_netstrfns[i];
-
- return NULL;
-}
-
-static struct netstrfns *
-libcfs_str2net_internal(char *str, uint32_t *net)
-{
- struct netstrfns *nf;
- int nob;
- int netnum;
- int i;
-
- for (i = 0; i < libcfs_nnetstrfns; i++) {
- nf = &libcfs_netstrfns[i];
- if (nf->nf_type >= 0 &&
- !strncmp(str, nf->nf_name, strlen(nf->nf_name)))
- break;
- }
-
- if (i == libcfs_nnetstrfns)
- return NULL;
-
- nob = strlen(nf->nf_name);
-
- if (strlen(str) == (unsigned int)nob) {
- netnum = 0;
- } else {
- if (nf->nf_type == LOLND) /* net number not allowed */
- return NULL;
-
- str += nob;
- i = strlen(str);
- if (sscanf(str, "%u%n", &netnum, &i) < 1 ||
- i != (int)strlen(str))
- return NULL;
- }
-
- *net = LNET_MKNET(nf->nf_type, netnum);
- return nf;
-}
-
-/* FIXME
- * this is duplication in libcfs, but somehow doesn't make into libcfs.a.
- * remove it when libcfs get fixed.
- */
-lnet_nid_t
-libcfs_str2nid(const char *str)
-{
- const char *sep = strchr(str, '@');
- struct netstrfns *nf;
- uint32_t net;
- uint32_t addr;
-
- if (sep != NULL) {
- nf = libcfs_str2net_internal(sep + 1, &net);
- if (nf == NULL)
- return LNET_NID_ANY;
- } else {
- sep = str + strlen(str);
- net = LNET_MKNET(SOCKLND, 0);
- nf = libcfs_lnd2netstrfns(SOCKLND);
- if (!nf)
- return LNET_NID_ANY;
- }
-
- if (!nf->nf_str2addr(str, sep - str, &addr))
- return LNET_NID_ANY;
-
- return LNET_MKNID(net, addr);
-}
-
-/****************************************
* user mapping database handling *
* (very rudiment) *
****************************************/
git://git.whamcloud.com / fs / lustre-release.git / blobdiff