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libutil: Compare proc entries to vfstype

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Modern systems have systemd manage system mount points like sysfs which
specify 'sysfs' as a keyword for the device as there is no device
associated with this special filesystem. However, any arbitrary string
could be specified here and the determination of the sysfs mount point
would fail in such a case.
To make sure that the mount point of the sysfs is still found when
mounted with a device keyword specified other than 'sysfs', check for
the filesystem type instead, which is more specific.

Fixes: https://github.com/ibm-s390-tools/s390-tools/issues/91
Suggested-by: Mark Post <mpost@suse.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Jan Höppner
2020-11-06 18:47:07 +01:00
parent cad450fdf9
commit 8ec4705239
1 changed files with 1 additions and 1 deletions
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2
libutil/util_proc.c
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@@ -460,7 +460,7 @@ int util_proc_mnt_get_entry(const char *file_name, const char *spec,
rc = scan_mnt_entry(&file, entry);
if (rc)
goto out_free;
if (!strcmp(entry->spec, spec)) {
if (!strcmp(entry->vfstype, spec)) {
rc = 0;
goto out_free;
}