Re: [libvirt] [PATCH v2 1/6] Introduce virFileFindHugeTLBFS

+int +virFileFindHugeTLBFS(virHugeTLBFSPtr *ret_fs, + size_t *ret_nfs) +{ + int ret = -1; + FILE *f = NULL; + struct mntent mb; + char mntbuf[1024]; + virHugeTLBFSPtr fs = NULL; + size_t nfs = 0; + unsigned long long default_hugepagesz; + + if (virFileGetDefaultHugepageSize(&default_hugepagesz) < 0) + goto cleanup; + + if (!(f = setmntent(PROC_MOUNTS, "r"))) { + virReportSystemError(errno, + _("Unable to open %s"), + PROC_MOUNTS); + goto cleanup; + } + + while (getmntent_r(f, &mb, mntbuf, sizeof(mntbuf))) { + virHugeTLBFSPtr tmp; + + if (STRNEQ(mb.mnt_type, "hugetlbfs")) + continue; + + if (VIR_REALLOC_N(fs, nfs + 1) < 0) + goto cleanup; + + tmp = &fs[nfs]; + nfs++;

+ + if (VIR_STRDUP(tmp->mnt_dir, mb.mnt_dir) < 0) + goto cleanup; + + if (virFileGetHugepageSize(tmp->mnt_dir, &tmp->size) < 0) + goto cleanup; + + tmp->deflt = tmp->size == default_hugepagesz; + }