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--- a/lib/sysfs_utils.c
+++ b/lib/sysfs_utils.c
@@ -22,6 +22,7 @@
*/
#include "libsysfs.h"
#include "sysfs.h"
+#include <mntent.h>
/**
* sysfs_remove_trailing_slash: Removes any trailing '/' in the given path
@@ -53,6 +54,9 @@ int sysfs_get_mnt_path(char *mnt_path, s
{
static char sysfs_path[SYSFS_PATH_MAX] = "";
const char *sysfs_path_env;
+ FILE *mnt;
+ struct mntent *mntent;
+ int ret;
if (len == 0 || mnt_path == NULL)
return -1;
@@ -64,12 +68,31 @@ int sysfs_get_mnt_path(char *mnt_path, s
if (sysfs_path_env != NULL) {
safestrcpymax(mnt_path, sysfs_path_env, len);
sysfs_remove_trailing_slash(mnt_path);
- return 0;
+ } else {
+ safestrcpymax(mnt_path, SYSFS_MNT_PATH, len);
}
- safestrcpymax(mnt_path, SYSFS_MNT_PATH, len);
}
- return 0;
+ /* check that mount point is indeed mounted */
+ ret = -1;
+ if ((mnt = setmntent(SYSFS_PROC_MNTS, "r")) == NULL) {
+ dprintf("Error getting mount information\n");
+ return -1;
+ }
+ while ((mntent = getmntent(mnt)) != NULL) {
+ if (strcmp(mntent->mnt_type, SYSFS_FSTYPE_NAME) == 0 &&
+ strcmp(mntent->mnt_dir, mnt_path) == 0) {
+ ret = 0;
+ break;
+ }
+ }
+
+ endmntent(mnt);
+
+ if (ret < 0)
+ errno = ENOENT;
+
+ return ret;
}
/**
|
