VFS_SUSER (9) | Kernel routines | Unix Manual Pages



VFS_SUSER (9) \| Kernel routines \| Unix Manual Pages \| :man▋ NAME vfs_suser - check if credentials have superuser privileges for a mount point CONTENTS Synopsis Description Return Values See Also History Authors SYNOPSIS .In sys/param.h .In sys/systm.h .In sys/mount.h int `vfs_suser "struct mount mp" "struct thread td"` DESCRIPTION The `vfs_suser` function checks if the credentials given include superuser powers for the given mount point. It will check to see if the thread passed in has the same credentials as the user that mounted the file system. If so, it returns 0, otherwise it returns what suser(9) would have returned. RETURN VALUES The `vfs_suser` function returns 0 if the user has superuser powers and `EPERM` otherwise. This is the reverse logic of some other implementations of `suser` in which a TRUE response indicates superuser powers. SEE ALSO chroot(2), jail(2), suser(9) HISTORY AUTHORS

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