const size_t pagesize_opt_len = sizeof(pagesize_opt) - 1;
const char split_tok = ' ';
char *splitstr[_FIELDNAME_MAX];
+ char found[PATH_MAX] = "";
char buf[BUFSIZ];
- int retval = -1;
const struct internal_config *internal_conf =
eal_get_internal_configuration();
+ struct stat st;
+
+ /*
+ * If the specified dir doesn't exist, we can't match it.
+ */
+ if (internal_conf->hugepage_dir != NULL &&
+ stat(internal_conf->hugepage_dir, &st) != 0) {
+ return -1;
+ }
FILE *fd = fopen(proc_mounts, "r");
if (fd == NULL)
default_size = get_default_hp_size();
while (fgets(buf, sizeof(buf), fd)){
+ const char *pagesz_str;
+
if (rte_strsplit(buf, sizeof(buf), splitstr, _FIELDNAME_MAX,
split_tok) != _FIELDNAME_MAX) {
RTE_LOG(ERR, EAL, "Error parsing %s\n", proc_mounts);
break; /* return NULL */
}
- /* we have a specified --huge-dir option, only examine that dir */
- if (internal_conf->hugepage_dir != NULL &&
- strcmp(splitstr[MOUNTPT], internal_conf->hugepage_dir) != 0)
+ if (strncmp(splitstr[FSTYPE], hugetlbfs_str, htlbfs_str_len) != 0)
continue;
- if (strncmp(splitstr[FSTYPE], hugetlbfs_str, htlbfs_str_len) == 0){
- const char *pagesz_str = strstr(splitstr[OPTIONS], pagesize_opt);
+ pagesz_str = strstr(splitstr[OPTIONS], pagesize_opt);
- /* if no explicit page size, the default page size is compared */
- if (pagesz_str == NULL){
- if (hugepage_sz == default_size){
- strlcpy(hugedir, splitstr[MOUNTPT], len);
- retval = 0;
- break;
- }
- }
- /* there is an explicit page size, so check it */
- else {
- uint64_t pagesz = rte_str_to_size(&pagesz_str[pagesize_opt_len]);
- if (pagesz == hugepage_sz) {
- strlcpy(hugedir, splitstr[MOUNTPT], len);
- retval = 0;
- break;
- }
- }
- } /* end if strncmp hugetlbfs */
+ /* if no explicit page size, the default page size is compared */
+ if (pagesz_str == NULL) {
+ if (hugepage_sz != default_size)
+ continue;
+ }
+ /* there is an explicit page size, so check it */
+ else {
+ uint64_t pagesz = rte_str_to_size(&pagesz_str[pagesize_opt_len]);
+ if (pagesz != hugepage_sz)
+ continue;
+ }
+
+ /*
+ * If no --huge-dir option has been given, we're done.
+ */
+ if (internal_conf->hugepage_dir == NULL) {
+ strlcpy(found, splitstr[MOUNTPT], len);
+ break;
+ }
+
+ /*
+ * Ignore any mount that doesn't contain the --huge-dir
+ * directory.
+ */
+ if (strncmp(internal_conf->hugepage_dir, splitstr[MOUNTPT],
+ strlen(splitstr[MOUNTPT])) != 0) {
+ continue;
+ }
+
+ /*
+ * We found a match, but only prefer it if it's a longer match
+ * (so /mnt/1 is preferred over /mnt for matching /mnt/1/2)).
+ */
+ if (strlen(splitstr[MOUNTPT]) > strlen(found))
+ strlcpy(found, splitstr[MOUNTPT], len);
} /* end while fgets */
fclose(fd);
- return retval;
+
+ if (found[0] != '\0') {
+ /* If needed, return the requested dir, not the mount point. */
+ strlcpy(hugedir, internal_conf->hugepage_dir != NULL ?
+ internal_conf->hugepage_dir : found, len);
+ return 0;
+ }
+
+ return -1;
}
/*