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94 lines
1.8 KiB
94 lines
1.8 KiB
4 months ago
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/*
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* Copyright (c) 2012 Cyril Hrubis <chrubis@suse.cz>
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*
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* This file is licensed under the GPL license. For the full content
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* of this license, see the COPYING file at the top level of this
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* source tree.
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*/
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#ifdef __linux__
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#include <mntent.h>
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#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <errno.h>
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#include <string.h>
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#endif
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#include <stdio.h>
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#include "posixtest.h"
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#ifdef __linux__
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/*
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* Returns if prefix is prefix of a string and the length of prefix.
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*/
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int strpref(const char *str, const char *pref)
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{
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int i;
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for (i = 0; pref[i] != '\0'; i++) {
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/* string ended too soon */
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if (str[i] == 0)
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return -1;
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/* string is diferent */
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if (str[i] != pref[i])
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return -1;
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}
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/* returns length of prefix */
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return i;
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}
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/*
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* Scans through mounted filesystems and check for longest prefix
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* contained in path.
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*/
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int mounted_noatime(const char *path)
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{
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struct mntent *mnt;
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int prefix_max = 0, prefix;
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int has_noatime = 0;
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FILE *f;
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f = setmntent("/proc/mounts", "r");
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if (f == NULL) {
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printf("Couldn't mount /proc/mounts\n");
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return -1;
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}
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while ((mnt = getmntent(f))) {
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/* ignore duplicit record for root fs */
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if (!strcmp(mnt->mnt_fsname, "rootfs"))
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continue;
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prefix = strpref(path, mnt->mnt_dir);
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if (prefix > prefix_max) {
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prefix_max = prefix;
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has_noatime = hasmntopt(mnt, "noatime") != NULL;
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}
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}
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return has_noatime;
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}
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#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
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int mounted_noatime(const char *path)
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{
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struct statfs _statfs;
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if (statfs(path, &_statfs) == -1) {
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printf("statfs for %s failed: %s", path, strerror(errno));
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return -1;
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}
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return (_statfs.f_flags & MNT_NOATIME);
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}
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#else
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int mounted_noatime(const char *path LTP_ATTRIBUTE_UNUSED)
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{
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return 0;
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}
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#endif
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